期刊文献+
共找到9,333篇文章
< 1 2 250 >
每页显示 20 50 100
白头翁汤通过HMGB1调控Nrf-2/HO-1信号通路缓解溃疡性结肠炎
1
作者 朱维娜 马春华 +3 位作者 阮杰 周芙琼 张亚杰 隆红艳 《中国药理学通报》 CAS 北大核心 2025年第1期186-192,共7页
目的探讨白头翁汤对葡聚糖硫酸钠所致小鼠炎症性肠病的干预作用,并初步阐明其作用机制。方法将50只C57BL/6小鼠随机分为正常组、模型组、白头翁汤高、中、低剂量组(20、10、5 g·kg^(-1)),美沙拉嗪组(5-ASA)(800 mg·kg^(-1)),... 目的探讨白头翁汤对葡聚糖硫酸钠所致小鼠炎症性肠病的干预作用,并初步阐明其作用机制。方法将50只C57BL/6小鼠随机分为正常组、模型组、白头翁汤高、中、低剂量组(20、10、5 g·kg^(-1)),美沙拉嗪组(5-ASA)(800 mg·kg^(-1)),采用3%葡聚糖硫酸钠(DSS)7 d构建UC模型,造模d 5开始灌胃给药,连续7 d。观察小鼠体质量,肠道大体观形态、结肠长度、生存率、结肠质量、HE染色观察结肠组织病理学改变,ELISA检测小鼠血清IL-6、IL-1β、高迁移率族蛋白B1(HMGB1)含量;比色法检测髓过氧化物酶(MPO)含量,超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量,Western blot检测肠道HMGB1、免疫球蛋白血管细胞粘附分子1(VCAM)、细胞间粘附分子(ICAM)、金属蛋白酶基质金属肽酶9(MMP-9)、核因子相关因子2(Nrf2)、血红素加氧酶1(HO-1)蛋白表达。结果白头翁汤有效减轻UC小鼠的症状和组织病理学评分。下调炎症因子IL-6和IL-1β、VCAM和ICAM、MMP-9,下调HMGB1。此外,它还抑制核Nrf2/HO-1通路。结论白头翁汤对炎症性肠病模型小鼠的一般情况、炎症指标及氧化应激水平有较好的改善作用,其作用机制可能与抑制HMGB1水平调控Nrf-2/HO-1信号通路,增强结肠黏膜的屏障作用有关。 展开更多
关键词 白头翁汤 溃疡性结肠炎 nrf-2/HO-1信号通路 HMGB1 氧化应激 葡聚糖硫酸钠
下载PDF
AAV2-PDE6B restores retinal structure and function in the retinal degeneration 10 mouse model of retinitis pigmentosa by promoting phototransduction and inhibiting apoptosis
2
作者 Ruiqi Qiu Mingzhu Yang +5 位作者 Xiuxiu Jin Jingyang Liu Weiping Wang Xiaoli Zhang Jinfeng Han Bo Lei 《Neural Regeneration Research》 SCIE CAS 2025年第8期2408-2419,共12页
Retinitis pigmentosa is a group of inherited diseases that lead to retinal degeneration and photoreceptor cell death.However,there is no effective treatment for retinitis pigmentosa caused by PDE6B mutation.Adeno-asso... Retinitis pigmentosa is a group of inherited diseases that lead to retinal degeneration and photoreceptor cell death.However,there is no effective treatment for retinitis pigmentosa caused by PDE6B mutation.Adeno-associated virus(AAV)-mediated gene therapy is a promising strategy for treating retinitis pigmentosa.The aim of this study was to explore the molecular mechanisms by which AAV2-PDE6B rescues retinal function.To do this,we injected retinal degeneration 10(rd10)mice subretinally with AAV2-PDE6B and assessed the therapeutic effects on retinal function and structure using dark-and light-adapted electroretinogram,optical coherence tomography,and immunofluorescence.Data-independent acquisition-mass spectrometry-based proteomic analysis was conducted to investigate protein expression levels and pathway enrichment,and the results from this analysis were verified by real-time polymerase chain reaction and western blotting.AAV2-PDE6B injection significantly upregulated PDE6βexpression,preserved electroretinogram responses,and preserved outer nuclear layer thickness in rd10 mice.Differentially expressed proteins between wild-type and rd10 mice were closely related to visual perception,and treating rd10 mice with AAV2-PDE6B restored differentially expressed protein expression to levels similar to those seen in wild-type mice.Kyoto Encyclopedia of Genes and Genome analysis showed that the differentially expressed proteins whose expression was most significantly altered by AAV2-PDE6B injection were enriched in phototransduction pathways.Furthermore,the phototransductionrelated proteins Pde6α,Rom1,Rho,Aldh1a1,and Rbp1 exhibited opposite expression patterns in rd10 mice with or without AAV2-PDE6B treatment.Finally,Bax/Bcl-2,p-ERK/ERK,and p-c-Fos/c-Fos expression levels decreased in rd10 mice following AAV2-PDE6B treatment.Our data suggest that AAV2-PDE6B-mediated gene therapy promotes phototransduction and inhibits apoptosis by inhibiting the ERK signaling pathway and upregulating Bcl-2/Bax expression in retinitis pigmentosa. 展开更多
关键词 APOPTOSIS AAV2-PDE6B ERK1/2 gene therapy PHOTOTRANSDUCTION PROTEOMICS rd10 retinitis pigmentosa
下载PDF
Wilm′s tumor gene1肽疫苗Galinpepimut-S在肿瘤免疫治疗中的应用
3
作者 高娜 梁平 +3 位作者 单彬 高亚乾 尹金妥 冯锐 《中国药业》 2024年第3期128-128,I0001-I0004,共5页
目的为Wilm′s tumor gene1(WT1)肽疫苗Galinpepimut-S(GPS)用于肿瘤免疫治疗的后续研究提供参考。方法采用计算机检索中国知网、PubMed等数据库自建库起至2022年12月的肿瘤免疫治疗相关文献,总结GPS在肿瘤免疫治疗中的应用现状。结果GP... 目的为Wilm′s tumor gene1(WT1)肽疫苗Galinpepimut-S(GPS)用于肿瘤免疫治疗的后续研究提供参考。方法采用计算机检索中国知网、PubMed等数据库自建库起至2022年12月的肿瘤免疫治疗相关文献,总结GPS在肿瘤免疫治疗中的应用现状。结果GPS能激发自身免疫系统,对WT1抗原产生强烈免疫反应而发挥抗肿瘤作用,在卵巢癌、恶性胸膜间皮瘤、急性髓系白血病、多发性骨髓瘤的治疗中均显示出较好的疗效。结论以GPS为代表的肿瘤疫苗是未来肿瘤治疗的重要方向,需进一步进行临床研究,以获取更多数据。 展开更多
关键词 Wilm′s tumor gene1肽疫苗 Galinpepimut-S 免疫治疗 新生抗原 肿瘤疫苗
下载PDF
基于Nrf-2/HO-1探究甘草锌对黄褐斑小鼠的治疗作用 被引量:1
4
作者 杜晓霜 刘萍 +2 位作者 邓映 杨洪秋 杜宇 《中国比较医学杂志》 CAS 北大核心 2024年第1期80-87,共8页
目的探讨甘草锌对黄褐斑的治疗作用。方法将36只BALB/c小鼠平均分为空白组、模型组、甘草锌低剂量组、甘草锌中剂量组、甘草锌高剂量组和氨甲环酸组,用100 mJ/cm^(2) UVB照射联合15 mg/kg黄体酮注射进行黄褐斑造模,后对小鼠进行氨甲环酸... 目的探讨甘草锌对黄褐斑的治疗作用。方法将36只BALB/c小鼠平均分为空白组、模型组、甘草锌低剂量组、甘草锌中剂量组、甘草锌高剂量组和氨甲环酸组,用100 mJ/cm^(2) UVB照射联合15 mg/kg黄体酮注射进行黄褐斑造模,后对小鼠进行氨甲环酸(0.065 g/kg)与甘草锌低(0.65 g/kg)/中(1.3 g/kg)/高(2.6 g/kg)剂量连续治疗14 d。取皮肤进行HE、Masson-Fontana染色;并检测皮肤和外周血中SOD、MDA、GSP-Px、TNF-α、IL-1β及IL-6含量;皮肤组织中浆蛋白Nrf-2、核蛋白Nrf-2、HO-1表达水平。结果与模型组相比较,高剂量甘草锌组黑色素细胞形成、胶原细胞坏死与炎性浸润减少(P<0.01),MDA、IL-6、IL-1β与TNF-α表达和浆蛋白Nrf-2表达降低(P<0.01),GSP-Px、SOD表达和核蛋白Nrf-2、HO-1表达增加(P<0.01)。结论甘草锌激活Nrf-2/HO-1通路启动HO-1、SOD和GSP-Px高表达抗氧化应激,从而减少黑色素形成。 展开更多
关键词 甘草锌 nrf-2/HO-1通路 黄褐斑 氧化应激 炎症
下载PDF
Knockdown of the atypical protein kinase genes GhABC1K2-A05 and GhABC1K12-A07 make cotton more sensitive to salt and PEG stress 被引量:1
5
作者 Caixiang Wang Meili Li +3 位作者 Dingguo Zhang Xueli Zhang Juanjuan Liu Junji Su 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第10期3370-3386,共17页
Activity of bc1 complex kinase(ABC1K)is an atypical protein kinase(aPK)that plays a crucial role in plant mitochondrial and plastid stress responses,but little is known about the responses of ABC1Ks to stress in cotto... Activity of bc1 complex kinase(ABC1K)is an atypical protein kinase(aPK)that plays a crucial role in plant mitochondrial and plastid stress responses,but little is known about the responses of ABC1Ks to stress in cotton(Gossypium spp.).Here,we identified 40 ABC1Ks in upland cotton(Gossypium hirsutum L.)and found that the Gh ABC1Ks were unevenly distributed across 17 chromosomes.The GhABC1K family members included 35 paralogous gene pairs and were expanded by segmental duplication.The GhABC1K promoter sequences contained diverse cis-acting regulatory elements relevant to hormone or stress responses.The qRT-PCR results revealed that most Gh ABC1Ks were upregulated by exposure to different stresses.Gh ABC1K2-A05 and Gh ABC1K12-A07 expression levels were upregulated by at least three stress treatments.These genes were further functionally characterized by virus-induced gene silencing(VIGS).Compared with the controls,the Gh ABC1K2-A05-and Gh ABC1K12-A07-silenced cotton lines exhibited higher malondialdehyde(MDA)contents,lower catalase(CAT),peroxidase(POD)and superoxide dismutase(SOD)activities and reduced chlorophyll and soluble sugar contents under NaCl and PEG stress.In addition,the expression levels of six stress marker genes(Gh DREB2A,Gh SOS1,Gh CIPK6,Gh SOS2,Gh WRKY33,and Gh RD29A)were significantly downregulated after stress in the Gh ABC1K2-A05-and Gh ABC1K12-A07-silenced lines.The results indicate that knockdown of Gh ABC1K2-A05 and Gh ABC1K12-A07 make cotton more sensitive to salt and PEG stress.These findings can provide valuable information for intensive studies of Gh ABC1Ks in the responses and resistance of cotton to abiotic stresses. 展开更多
关键词 COTTON ABC1K abiotic stress responses expression patterns virus-induced gene silencing(VIGS)
下载PDF
“足三里”“尺泽”电针预处理对急性肺损伤模型大鼠炎症反应及Nrf-2、HO-1因子表达的影响
6
作者 彭婷 谭金曲 +7 位作者 舒象忠 周君 宁鹏云 曾亚华 黄夏荣 王婷 屈萌艰 罗敷 《中医康复》 2024年第12期44-48,共5页
目的:观察电针预处理对急性肺损伤(ALI)大鼠炎症反应及核因子E2相关因子2(Nrf2)/血红素氧合酶-1(HO-1)通路的影响,探讨电针预处理在ALI中发挥的效应及可能机制。方法:将18只清洁级雄性Wistar大鼠随机分为对照组、脂多糖(LPS)组、电针预... 目的:观察电针预处理对急性肺损伤(ALI)大鼠炎症反应及核因子E2相关因子2(Nrf2)/血红素氧合酶-1(HO-1)通路的影响,探讨电针预处理在ALI中发挥的效应及可能机制。方法:将18只清洁级雄性Wistar大鼠随机分为对照组、脂多糖(LPS)组、电针预处理+LPS组,每组6只。电针预处理组予以电针预处理,疏密波,频率3 Hz/15 Hz,电流强度1~2 mA,30 min/次,1次/天,连续治疗5天。第5天,对照组麻醉后眼眶取血,再取肺组织;LPS组与电针预处理组尾静脉1/3处注射LPS溶液(注射剂量5 mg/kg,浓度5 mg/mL)6 h后取样。采用苏木素伊红染色法观察肺组织病理变化;光学显微镜观察并进行肺损伤病理评分;酶联免疫分析法检测IL-1β、IL-10水平;荧光定量PCR及Western blot分别检测Nrf-2、HO-1mRNA和蛋白表达情况。结果:与对照组比较,LPS组肺泡壁增厚,肺间质可见大量炎性细胞浸润,肺泡可见红细胞渗出;血清IL-1β水平升高,IL-10水平降低(P<0.01);Nrf-2和HO-1 mRNA及蛋白表达明显降低(P<0.01);与LPS组相比,电针预处理组肺组织损伤程度明显减轻;IL-1β水平明显降低(P<0.01),IL-10水平升高(P<0.05);Nrf2、HO-1 mRNA及蛋白表达明显增高(P<0.01,P<0.05),蛋白表达水平变化趋势与mRNA表达一致。结论:电针预处理对急性肺损伤大鼠炎症反应具有抑制作用,其对肺保护效应可能与促进Nrf2、HO-1分泌,降低肺内促炎因子水平、升高抑炎因子水平有关。 展开更多
关键词 电针预处理 急性肺损伤 炎症反应 nrf-2 HO-1 大鼠
下载PDF
The role of tazarotene-induced gene 1 in carcinogenesis:is it a tumor suppressor gene or an oncogene?
7
作者 CHUN-HUA WANG LU-KAI WANG +1 位作者 RONG-YAUN SHYU FU-MING TSAI 《BIOCELL》 SCIE 2024年第9期1285-1297,共13页
Tazarotene-induced gene 1(TIG1)is induced by a derivative of vitamin A and is known to regulate many important biological processes and control the development of cancer.TIG1 is widely expressed in various tissues;yet... Tazarotene-induced gene 1(TIG1)is induced by a derivative of vitamin A and is known to regulate many important biological processes and control the development of cancer.TIG1 is widely expressed in various tissues;yet in many cancer tissues,it is not expressed because of the methylation of its promoter.Additionally,the expression of TIG1 in cancer cells inhibits their growth and invasion,suggesting that TIG1 acts as a tumor suppressor gene.However,in some cancers,poor prognosis is associated with TIG1 expression,indicating its protumor growth characteristics,especially in promoting the invasion of inflammatory breast cancer cells.This review comprehensively summarizes the roles of the TIG1 gene in cancer development and details the mechanisms through which TIG1 regulates cancer development,with the aim of understanding its various roles in cancer development. 展开更多
关键词 Tazarotene-induced gene 1 Retinoic acid receptor responder protein 1 Tumor suppressor gene ONCOgene
下载PDF
Oleuropein alleviates sepsis-induced acute lung injury via the AMPK/Nrf-2/HO-1 signaling
8
作者 Shan-Hu Wang Yang-Yang Wu Xiao-Jiao Xia 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2024年第5期187-198,共12页
Objective:To explore the effect of oleuropein on sepsis-induced acute lung injury(ALI)in vitro and in vivo and investigate the underlying mechanism.Methods:In an lipopolysaccharide(LPS)-mediated cell model of sepsis-i... Objective:To explore the effect of oleuropein on sepsis-induced acute lung injury(ALI)in vitro and in vivo and investigate the underlying mechanism.Methods:In an lipopolysaccharide(LPS)-mediated cell model of sepsis-induced ALI and a cecal ligation and puncture-induced mouse model of septic ALI,CCK-8 assay and flow cytometry analysis were used to detect cell activity and apoptosis.ELISA and relevant assay kits were used to measure the levels of inflammatory cytokines and oxidative stress,respectively.Western blot was applied to determine the expression of apoptosis-and AMP-activated protein kinase(AMPK)/nuclear factor erythroid 2-related factor-2(Nrf-2)/heme oxygenase-1(HO-1)signaling-associated proteins.JC-1 staining,adenosine triphosphate(ATP)assay kit,and MitoSOX Red assays were performed to detect mitochondrial membrane potential,ATP content,and mitochondrial ROS formation,respectively.Moreover,lung injury was evaluated by measuring lung morphological alternations,lung wet-to-dry ratio,myeloperoxidase content,and total protein concentration.Results:Oleuropein reduced inflammatory reaction,oxidative damage,and apoptosis,and ameliorated mitochondrial dysfunction in LPS-exposed BEAS-2B cells and mice with septic ALI.Besides,oleuropein activated the AMPK/Nrf-2/HO-1 signaling pathway.However,these effects of oleuropein were abrogated by an AMPK inhibitor compound C.Conclusions:Oleuropein can protect against sepsis-induced ALI in vitro and in vivo by activating the AMPK/Nrf-2/HO-1 signaling,which might be a potential therapeutic agent for the treatment of sepsis-induced ALI. 展开更多
关键词 AMPK/nrf-2/HO-1 signaling Inflammatory response Lung damage Mitochondrial dysfunction OLEUROPEIN Oxidative stress SEPSIS
下载PDF
Molecular Evolution of Rice Blast Resistance Gene bsr-d1
9
作者 LI Wei ZHANG Mengchen +3 位作者 YANG Yaolong WENG Lin HU Peisong WEI Xinghua 《Rice science》 SCIE CSCD 2024年第6期700-711,共12页
Rice blast,caused by the fungus Magnaporthe oryzae,reduces rice yields by 10%to 35%.Incorporating blast resistance genes into breeding programs is an effective strategy to combat this disease.Understanding the genetic... Rice blast,caused by the fungus Magnaporthe oryzae,reduces rice yields by 10%to 35%.Incorporating blast resistance genes into breeding programs is an effective strategy to combat this disease.Understanding the genetic variants that confer resistance is crucial to this strategy.The gene Bsr-d1 encodes a C2H2-like transcription factor,and its recessive allele confers broad-spectrum resistance against infections by various strains of M.oryzae.In this study,we investigated the molecular evolution of the rice blast resistance gene bsr-d1 in a representative population consisting of 827 cultivated and wild rice accessions.Our results revealed that wild rice exhibited significantly higher nucleotide diversity,with polymorphic regions primarily concentrated in the promoter region,in contrast to indica and japonica rice varieties.The Bsr-d1 gene displayed significant differentiation between indica and japonica rice varieties,with the bsr-d1 resistance allele being unique to indica rice.Haplotype network and phylogenetic analyses suggested that the bsr-d1 resistance allele most likely originated from Oryza nivara in the region adjacent to the Indian Peninsula and the Indochina Peninsula.Moreover,we explored the utilization of bsr-d1 resistance alleles in China and designed a pair of DNA primers based on the polymorphic sites for the detection of the bsr-d1 resistance gene.In summary,our study uncovering the origin and evolution of bsr-d1 will enhance our understanding of resistance gene variation and expedite the resistance breeding process. 展开更多
关键词 broad-spectrum resistance bsr-d1 gene evolution Magnaporthe oryzae resistance breeding
下载PDF
Multi-genome evolutionary study of the ABC1 gene family and identification of the pleiotropic effects of OsABC1-13 in rice development
10
作者 Fuying Ma Mingyu Liu +11 位作者 Peiwen Yan Shicong He Jian Hu Xinwei Zhang Fuan Niu Jinhao Cui Xinyu Yuan Xiaoyun Xin Liming Cao Jinshui Yang Ying Wang Xiaojin Luo 《The Crop Journal》 SCIE CSCD 2024年第4期1022-1030,共9页
In four rice genomes,85 ABC1-family genes were identified by comparative genomics,evolution,genetics,and physiology.One,OsABC1-13,was shown by knockdown and knockout experiments to affect plant height,grain size,and p... In four rice genomes,85 ABC1-family genes were identified by comparative genomics,evolution,genetics,and physiology.One,OsABC1-13,was shown by knockdown and knockout experiments to affect plant height,grain size,and photosynthetic capability. 展开更多
关键词 Multi-genome analysis Activity of bc1 complex gene PHOTOSYNTHESIS BIOMASS Osabc1-13 HAPLOTYPE
下载PDF
Defect in an immune regulator gene BrSRFR1 leads to premature leaf senescence in Chinese cabbage
11
作者 Yue Xin Gengxing Song +1 位作者 Chong Tan Hui Feng 《Horticultural Plant Journal》 SCIE CAS CSCD 2024年第6期1414-1423,共10页
Leaf senescence is the final stage of leaf development, where the nutrients and energy of senescent leaves are redistributed to developing tissues or organs for plant growth, reproduction, and defense. Outer leaves ar... Leaf senescence is the final stage of leaf development, where the nutrients and energy of senescent leaves are redistributed to developing tissues or organs for plant growth, reproduction, and defense. Outer leaves are photosynthetic organs that usually senesce at the late heading stage in Chinese cabbage, and premature leaf senescence often reduces leafy head yield and quality. In this study, 11 premature leaf senescence mutants were screened from an ethyl methanesulfonate-mutagenized population of the double haploid line ‘FT' in Chinese cabbage. At the early heading stage, the mutants exhibited edge yellowing within its outer leaves, and at the mature stage, its leafy head weight decreased significantly. Genetic analysis revealed that the mutated trait of all 11 mutants corresponds to single gene recessive inheritance. Semi-diallel cross tests showed that 5 of the 11 were allelic mutants. MutMap and Kompetitive Allele Specific PCR genotyping revealed that BraA01g001400.3C was the candidate gene, which is orthologous of Arabidopsis SUPPRESSOR OF rps4-RLD 1, encoding an immune regulator, so we named it as BrSRFR1. All the BrSRFR1 in the five allelic mutants exhibited single nucleotide polymorphisms at different positions on their exons and led to premature translation termination, which confirmed that defect in BrSRFR1 led to premature leaf senescence. These results verify the role of Br SRFR1 on leaf senescence and provide a new insight into the mechanisms of leaf senescence in Chinese cabbage, which reveals a novel function of SRFR1 in plant development. 展开更多
关键词 Chinese cabbage Premature leaf senescence SRFR1 gene cloning
下载PDF
Detection of Novel BEST1 Variations in Autosomal Recessive Bestrophinopathy Using Third-generation Sequencing
12
作者 Jia-xun LI Ling-rui MENG +6 位作者 Bao-ke HOU Xiao-lu HAO Da-jiang WANG Ling-hui QU Zhao-hui LI Lei ZHANG Xin JIN 《Current Medical Science》 SCIE CAS 2024年第2期419-425,共7页
Objective:Autosomal recessive bestrophinopathy(ARB),a retinal degenerative disease,is characterized by central visual loss,yellowish multifocal diffuse subretinal deposits,and a dramatic decrease in the light peak on ... Objective:Autosomal recessive bestrophinopathy(ARB),a retinal degenerative disease,is characterized by central visual loss,yellowish multifocal diffuse subretinal deposits,and a dramatic decrease in the light peak on electrooculogram.The potential pathogenic mechanism involves mutations in the BEST1 gene,which encodes Ca2+-activated Cl−channels in the retinal pigment epithelium(RPE),resulting in degeneration of RPE and photoreceptor.In this study,the complete clinical characteristics of two Chinese ARB families were summarized.Methods:Pacific Biosciences(PacBio)single-molecule real-time(SMRT)sequencing was performed on the probands to screen for disease-causing gene mutations,and Sanger sequencing was applied to validate variants in the patients and their family members.Results:Two novel mutations,c.202T>C(chr11:61722628,p.Y68H)and c.867+97G>A,in the BEST1 gene were identified in the two Chinese ARB families.The novel missense mutation BEST1 c.202T>C(p.Y68H)resulted in the substitution of tyrosine with histidine in the N-terminal region of transmembrane domain 2 of bestrophin-1.Another novel variant,BEST1 c.867+97G>A(chr11:61725867),located in intron 7,might be considered a regulatory variant that changes allele-specific binding affinity based on motifs of important transcriptional regulators.Conclusion:Our findings represent the first use of third-generation sequencing(TGS)to identify novel BEST1 mutations in patients with ARB,indicating that TGS can be a more accurate and efficient tool for identifying mutations in specific genes.The novel variants identified further broaden the mutation spectrum of BEST1 in the Chinese population. 展开更多
关键词 autosomal recessive bestrophinopathy BEST1 gene third-generation sequencing MUTATION
下载PDF
Heat-inducible SlWRKY3 confers thermotolerance by activating the SlGRXS1 gene cluster in tomato
13
作者 Ying Wang Wenxian Gai +9 位作者 Liangdan Yuan Lele Shang Fangman Li Zhao Gong Pingfei Ge Yaru Wang Jinbao Tao Xingyu Zhang Haiqiang Dong Yuyang Zhang 《Horticultural Plant Journal》 SCIE CAS CSCD 2024年第2期515-531,共17页
High temperature stress is one of the major environmental factors that affect the growth and development of plants. Although WRKY transcription factors play a critical role in stress responses, there are few studies o... High temperature stress is one of the major environmental factors that affect the growth and development of plants. Although WRKY transcription factors play a critical role in stress responses, there are few studies on the regulation of heat stress by WRKY transcription factors,especially in tomato. Here, we identified a group I WRKY transcription factor, SlWRKY3, involved in thermotolerance in tomato. First, SlWRKY3 was induced and upregulated under heat stress. Accordingly, overexpression of SlWRKY3 led to an increase, whereas knock-out of SlWRKY3 resulted in decreased tolerance to heat stress. Overexpression of SlWRKY3 accumulated less reactive oxygen species(ROS), whereas knock-out of SlWRKY3 accumulated more ROS under heat stress. This indicated that SlWRKY3 positively regulates heat stress in tomato. In addition,SlWRKY3 activated the expression of a range of abiotic stress-responsive genes involved in ROS scavenging, such as a SlGRXS1 gene cluster.Further analysis showed that SlWRKY3 can bind to the promoters of the SlGRXS1 gene cluster and activate their expression. Collectively, these results imply that SlWRKY3 is a positive regulator of thermotolerance through direct binding to the promoters of the SlGRXS1 gene cluster and activating their expression and ROS scavenging. 展开更多
关键词 TOMATO WRKY transcription factor SlWRKY3 THERMOTOLERANCE SlGRXS1 gene cluster Abiotic stress
下载PDF
AGTR1 A1166C gene polymorphism is associated with the effectiveness of valsartan monotherapy in Chinese patients with essential hypertension:A retrospective analysis
14
作者 Hanzhong Yu Lei Li +5 位作者 Shuyao Wei Qianqian Kong Wei Nu Bo Dong Yuewu Zhao Li Wang 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2024年第9期418-424,共7页
Objective:To investigate whether angiotensinⅡtype 1 receptor(AGTR1 A1166C)gene polymorphism was associated with the effectiveness of valsartan monotherapy in Chinese patients with essential hypertension.Methods:This ... Objective:To investigate whether angiotensinⅡtype 1 receptor(AGTR1 A1166C)gene polymorphism was associated with the effectiveness of valsartan monotherapy in Chinese patients with essential hypertension.Methods:This retrospective analysis included 198 patients(≥18 years of age)who received valsartan monotherapy(80 mg/day)for newly developed essential hypertension at the authors’center between January 1,2020 and December 31,2023.Genotyping for AGTR1 A1166C gene polymorphism was done by polymerase chain reaction(PCR)-melting curve analysis of genomic DNA from peripheral blood samples.A dominant genetic model for AGTR1 A1166C(AA genotype versus AC+CC genotype)was used.Multivariate regression analysis of baseline variables and AGTR1 polymorphism was conducted to identify predictors of target blood pressure attainment(<140/90 mmHg)at the 4-week follow-up.Results:The median age of the 198 patients was(53.7±13.5)years,and 58%were men.Genotyping assays showed that 164 patients had the AA genotype,and 34 patients were of the AC/CC genotype,including 30 with the AC genotype and 4 with the CC genotype.Allele distribution was consistent with Hardy Weinberg equilibrium.109 Patients(55.1%)attained the blood pressure target.Multivariate analysis showed that smoking(versus no smoking,HR 0.314,95%CI 0.159-0.619,P=0.001)and AGTR1 A1166C AA genotype(versus AC/CC,HR 2.927,95%CI 1.296-6.611,P=0.023)were significant and independent predictors of target attainment.25 Patients(73.5%)with AGTR1 A1166C AC/CC genotype attained the target versus 51.2%(51/164)of patients with AGTR1 A1166C AA genotype(P=0.017).Patients with AGTR1 A1166C AC/CC genotype had a significantly greater reduction in systolic blood pressure[(33.1±10.8)mmHg versus(29.2±11.7)mmHg in AA carriers;(P=0.029)].Conclusions:Hypertensive patients carrying one or two C alleles of the AGTR1 A1166C gene were more responsive to valsartan treatment. 展开更多
关键词 Essential hypertension AngiotensinⅡtype 1 receptor antagonist VALSARTAN AGTR1 A1166C gene polymorphism
下载PDF
茵陈蒿汤调控Nrf-2/HO-1通路对慢性阻塞性肺疾病大鼠气道重塑的影响
15
作者 李春晓 李怀臣 《陕西中医》 CAS 2024年第8期1031-1035,1041,共6页
目的:探讨茵陈蒿汤调控抗氧化相关转录因子核因子相关因子2(Nrf-2)/亚铁血红素氧化酶1(HO-1)通路对慢性阻塞性肺疾病(COPD)大鼠气道重塑的影响。方法:通过注射脂多糖联合烟熏制备COPD大鼠,造模后随机分为模型组、茵陈蒿汤(4.41 g/kg)组... 目的:探讨茵陈蒿汤调控抗氧化相关转录因子核因子相关因子2(Nrf-2)/亚铁血红素氧化酶1(HO-1)通路对慢性阻塞性肺疾病(COPD)大鼠气道重塑的影响。方法:通过注射脂多糖联合烟熏制备COPD大鼠,造模后随机分为模型组、茵陈蒿汤(4.41 g/kg)组、氨茶碱(2.3 mg/kg)组、茵陈蒿汤+抑制剂(4.41 g/kg茵陈蒿汤+30 mg/kg ML385)组,并以正常大鼠为对照组,检测大鼠肺功能[呼气峰流量(PEF)、第一秒用力呼气容积(FEV1)/用力肺活量(FVC)];评估血清白细胞介素(IL)-1β、IL-6水平及肺组织超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)水平;检测肺组织病理学变化以及转化生长因子(TGF-β)、结缔组织生长因子(CTGF)阳性表达、金属基质蛋白酶(MMP)-2 mRNA、MMP-9 mRNA表达、Nrf-2、HO-1蛋白表达。结果:模型组FEV1/FVC、PEF、肺组织SOD、GSH-Px水平、Nrf-2、HO-1蛋白表达较对照组降低,血清IL-1β、IL-6、病理评分、肺组织TGF-β、CTGF、MMP-2 mRNA、MMP-9 mRNA表达增加(均P<0.05);茵陈蒿汤或氨茶碱治疗后,FEV1/FVC、PEF、肺组织SOD、GSH-Px水平、Nrf-2、HO-1蛋白表达较模型组增加,血清IL-1β、IL-6、病理评分、肺组织TGF-β、CTGF、MMP-2 mRNA、MMP-9 mRNA表达显著降低(均P<0.05);茵陈蒿汤联合ML385治疗后,FEV1/FVC、PEF、肺组织SOD、GSH-Px水平、Nrf-2、HO-1蛋白表达较茵陈蒿汤组降低,血清IL-1β、IL-6、病理评分、肺组织TGF-β、CTGF、MMP-2 mRNA、MMP-9 mRNA表达增加(均P<0.05)。结论:茵陈蒿汤可通过调控Nrf-2/HO-1通路改善COPD大鼠气道重塑。 展开更多
关键词 慢性阻塞性肺疾病 茵陈蒿汤 nrf-2/HO-1通路 气道重塑 炎性反应 氧化应激
下载PDF
Unilateral rNurr1-V5 transgene expression in nigral dopaminergic neurons mitigates bilateral neuropathology and behavioral deficits in parkinsonian rats withα-synucleinopathy
16
作者 Bismark Gatica-Garcia Michael J.Bannon +14 位作者 Irma Alicia Martínez-Dávila Luis O.Soto-Rojas David Reyes-Corona Lourdes Escobedo Minerva Maldonado-Berny ME Gutierrez-Castillo Armando J.Espadas-Alvarez Manuel A.Fernandez-Parrilla Juan U.Mascotte-Cruz CP Rodríguez-Oviedo Irais E.Valenzuela-Arzeta Claudia Luna-Herrera Francisco E.Lopez-Salas Jaime Santoyo-Salazar Daniel Martinez-Fong 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第9期2057-2067,共11页
Parkinsonism by unilateral,intranigralβ-sitosterolβ-D-glucoside administration in rats is distinguished in that theα-synuclein insult begins unilaterally but spreads bilaterally and increases in severity over time,... Parkinsonism by unilateral,intranigralβ-sitosterolβ-D-glucoside administration in rats is distinguished in that theα-synuclein insult begins unilaterally but spreads bilaterally and increases in severity over time,thus replicating several clinical features of Parkinson’s disease,a typicalα-synucleinopathy.As Nurr1 repressesα-synuclein,we evaluated whether unilateral transfected of rNurr1-V5 transgene via neurotensin-polyplex to the substantia nigra on day 30 after unilateralβ-sitosterolβ-D-glucoside lesion could affect bilateral neuropathology and sensorimotor deficits on day 30 post-transfection.This study found that rNurr1-V5 expression but not that of the green fluorescent protein(the negative control)reducedβ-sitosterolβ-D-glucoside-induced neuropathology.Accordingly,a bilateral increase in tyrosine hydroxylase-positive cells and arborization occurred in the substantia nigra and increased tyrosine hydroxylase-positive ramifications in the striatum.In addition,tyrosine hydroxylase-positive cells displayed less senescence markerβ-galactosidase and more neuron-cytoskeleton markerβIII-tubulin and brain-derived neurotrophic factor.A significant decrease in activated microglia(positive to ionized calcium-binding adaptor molecule 1)and neurotoxic astrocytes(positive to glial fibrillary acidic protein and complement component 3)and increased neurotrophic astrocytes(positive to glial fibrillary acidic protein and S100 calcium-binding protein A10)also occurred in the substantia nigra.These effects followed the bilateral reduction inα-synuclein aggregates in the nigrostriatal system,improving sensorimotor behavior.Our results show that unilateral rNurr1-V5 transgene expression in nigral dopaminergic neurons mitigates bilateral neurodegeneration(senescence and loss of neuron-cytoskeleton and tyrosine hydroxylase-positive cells),neuroinflammation(activated microglia,neurotoxic astrocytes),α-synuclein aggregation,and sensorimotor deficits.Increased neurotrophic astrocytes and brain-derived neurotrophic factor can mediate the rNurr1-V5 effect,supporting its potential clinical use in the treatment of Parkinson’s disease. 展开更多
关键词 A1 astrocytes A2 astrocytes gene therapy microglia motor deficits nanoparticles NEURODEgeneRATION neuroinflammation senescence α-synuclein aggregates
下载PDF
Pathogenesis of chronic enteropathy associated with the SLCO2A1 gene:Hypotheses and conundrums
17
作者 Zhi-Xin Xie Yue Li +2 位作者 Ai-Ming Yang Dong Wu Qiang Wang 《World Journal of Gastroenterology》 SCIE CAS 2024年第19期2505-2511,共7页
Chronic enteropathy associated with the SLCO2A1 gene(CEAS)is a complex gastroenterological condition characterized by multiple ulcers in the small intestine with chronic bleeding and protein loss.This review explores ... Chronic enteropathy associated with the SLCO2A1 gene(CEAS)is a complex gastroenterological condition characterized by multiple ulcers in the small intestine with chronic bleeding and protein loss.This review explores the potential mechanisms underlying the pathogenesis of CEAS,focusing on the role of SLCO2A1-encoded prostaglandin transporter OATP2A1 and its impact on prostaglandin E2(PGE2)levels.Studies have suggested that elevated PGE2 levels contribute to mucosal damage,inflammation,and disruption of the intestinal barrier.The effects of PGE2 on macrophage activation and Maxi-Cl channel functionality,as well as its interaction with nonsteroidal anti-inflammatory drugs play crucial roles in the progression of CEAS.Understanding the balance between its protective and pro-inflammatory effects and the complex interactions within the gastrointestinal tract can shed light on potential therapeutic targets for CEAS and guide the development of novel,targeted therapies. 展开更多
关键词 SLCO2A1 Prostaglandin E2 Chronic enteropathy associated with the SLCO2A1 gene Small intestine MACROPHAGE
下载PDF
Studies on the temporal,structural,and interacting features of the clubroot resistance gene Rcr1 using CRISPR/Cas9-based systems
18
作者 Hao Hu Fengqun Yu 《Horticultural Plant Journal》 SCIE CAS CSCD 2024年第4期1035-1048,共14页
Clubroot disease is a severe threat to Brassica crops globally,particularly in western Canada.Genetic resistance,achieved through pyramiding clubroot resistance(CR)genes with different modes of action,is the most impo... Clubroot disease is a severe threat to Brassica crops globally,particularly in western Canada.Genetic resistance,achieved through pyramiding clubroot resistance(CR)genes with different modes of action,is the most important strategy for managing the disease.However,studies on the CR gene functions are quite limited.In this study,we have conducted investigations into the temporal,structural,and interacting features of a newly cloned CR gene,Rcr1,using CRISPR/Cas9 technology.For temporal functionality,we developed a novel CRISPR/Cas9-based binary vector,pHHIGR-Hsp18.2,to deliver Rcr1 into a susceptible canola line(DH12075)and observed that early expression of Rcr1 is critical for conferring resistance.For structural functionality,several independent mutations in specific domains of Rcr1 resulted in loss-offunction,highlighting their importance for CR phenotype.In the study of the interacting features of Rcr1,a cysteine protease gene and its homologous allele in canola were successfully disrupted via CRISPR/Cas9 as an interacting component with Rcr1 protein,resulting in the conversion from clubroot resistant to susceptible in plants carrying intact Rcr1.These results indicated an indispensable role of these two cysteine proteases in Rcr1-mediated resistance response.This study,the first of its kind,provides valuable insights into the functionality of Rcr1.Further,the new vector p HHIGR-Hsp18.2 demonstrated an inducible feature on the removal of add-on traits,which should be useful for functional genomics and other similar research in brassica crops. 展开更多
关键词 Clubroot resistance Brassica crops CANOLA Rcr1 CRISPR/Cas9 system gene knock-out Timing control Non-synonymous mutation Protein-protein interaction
下载PDF
Association between 5-HTR1A gene C-1019G polymorphism and antidepressant response in patients with major depressive disorder:A meta-analysis
19
作者 Huai-Neng Wu Shuang-Yue Zhu +2 位作者 Li-Na Zhang Bian-Hong Shen Lian-Lian Xu 《World Journal of Psychiatry》 SCIE 2024年第10期1573-1582,共10页
BACKGROUND Major depressive disorder(MDD)is a substantial global health concern,and its treatment is complicated by the variability in individual response to antide-pressants.AIM To consolidate research and clarify th... BACKGROUND Major depressive disorder(MDD)is a substantial global health concern,and its treatment is complicated by the variability in individual response to antide-pressants.AIM To consolidate research and clarify the impact of genetic variation on MDD treatment outcomes.METHODS Adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines,a systematic search across PubMed,EMBASE,Web of Science,and the Cochrane Library was conducted without date restrictions,utilizing key terms related to MDD,serotonin 1A receptor polymorphism(5-HTR1A),C-1019G polymorphism,and antidepressant response.Studies meeting inclusion criteria were thoroughly screened,and quality assessed using the Newcastle-Ottawa Scale.Statistical analyses,includingχ2 and I²values,were used to evaluate heterogeneity and fixed-effect or random-effect models were applied accordingly.RESULTS The initial search yielded 1216 articles,with 11 studies meeting criteria for inclusion.Analysis of various genetic models showed no significant association between the 5-HTR1A C-1019G polymorphism and antidepressant efficacy.The heterogeneity was low to moderate,and no publication bias was detected through funnel plot symmetry and Egger's and Begg's tests.CONCLUSION This meta-analysis does not support a significant association between the 5-HTR1A C-1019G polymorphism and the efficacy of antidepressant treatment in MDD.The findings call for further research with larger cohorts to substantiate these results and enhance the understanding of antidepressant pharmacogenetics. 展开更多
关键词 Major depressive disorder Antidepressant efficacy 5-HTR1A gene C-1019G polymorphism META-ANALYSIS
下载PDF
Assessment of pathogenicity and functional characterization of APPL1 gene mutations in diabetic patients
20
作者 Ping Shi Yang Tian +7 位作者 Feng Xu Lu-Na Liu Wan-Hong Wu Ying-Zhou Shi An-Qi Dai Hang-Yu Fang Kun-Xia Li Chao Xu 《World Journal of Diabetes》 SCIE 2024年第2期275-286,共12页
BACKGROUND Adaptor protein,phosphotyrosine interacting with PH domain and leucine zipper 1(APPL1)plays a crucial role in regulating insulin signaling and glucose metabolism.Mutations in the APPL1 gene have been associ... BACKGROUND Adaptor protein,phosphotyrosine interacting with PH domain and leucine zipper 1(APPL1)plays a crucial role in regulating insulin signaling and glucose metabolism.Mutations in the APPL1 gene have been associated with the development of maturity-onset diabetes of the young type 14(MODY14).Currently,only two mutations[c.1655T>A(p.Leu552*)and c.281G>A p.(Asp94Asn)]have been identified in association with this disease.Given the limited understanding of MODY14,it is imperative to identify additional cases and carry out comprehensive research on MODY14 and APPL1 mutations.AIM To assess the pathogenicity of APPL1 gene mutations in diabetic patients and to characterize the functional role of the APPL1 domain.METHODS Patients exhibiting clinical signs and a medical history suggestive of MODY were screened for the study.Whole exome sequencing was performed on the patients as well as their family members.The pathogenicity of the identified APPL1 variants was predicted on the basis of bioinformatics analysis.In addition,the pathogenicity of the novel APPL1 variant was preliminarily evaluated through in vitro functional experiments.Finally,the impact of these variants on APPL1 protein expression and the insulin pathway were assessed,and the potential mechanism underlying the interaction between the APPL1 protein and the insulin receptor was further explored.RESULTS A total of five novel mutations were identified,including four missense mutations(Asp632Tyr,Arg633His,Arg532Gln,and Ile642Met)and one intronic mutation(1153-16A>T).Pathogenicity prediction analysis revealed that the Arg532Gln was pathogenic across all predictions.The Asp632Tyr and Arg633His variants also had pathogenicity based on MutationTaster.In addition,multiple alignment of amino acid sequences showed that the Arg532Gln,Asp632Tyr,and Arg633His variants were conserved across different species.Moreover,in in vitro functional experiments,both the c.1894G>T(at Asp632Tyr)and c.1595G>A(at Arg532Gln)mutations were found to downregulate the expression of APPL1 on both protein and mRNA levels,indicating their pathogenic nature.Therefore,based on the patient’s clinical and family history,combined with the results from bioinformatics analysis and functional experiment,the c.1894G>T(at Asp632Tyr)and c.1595G>A(at Arg532Gln)mutations were classified as pathogenic mutations.Importantly,all these mutations were located within the phosphotyrosinebinding domain of APPL1,which plays a critical role in the insulin sensitization effect.CONCLUSION This study provided new insights into the pathogenicity of APPL1 gene mutations in diabetes and revealed a potential target for the diagnosis and treatment of the disease. 展开更多
关键词 Adaptor protein phosphotyrosine interacting with PH domain and leucine zipper 1 Maturity-onset diabetes of the young Bioinformatics analysis gene mutation DOMAIN
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部