期刊文献+
共找到5,064篇文章
< 1 2 250 >
每页显示 20 50 100
Downregulation of Serum PTEN Expression in Mercury-Exposed Population and PI3K/AKT Pathway-Induced Inflammation 被引量:1
1
作者 MEI Peng DING En Min +6 位作者 YIN Hao Yang DING Xue Xue WANG Huan WANG Jian Feng HAN Lei ZHANG Heng Dong ZHU Bao Li 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2024年第4期354-366,共13页
Objective This study investigated the impact of occupational mercury(Hg) exposure on human gene transcription and expression, and its potential biological mechanisms.Methods Differentially expressed genes related to H... Objective This study investigated the impact of occupational mercury(Hg) exposure on human gene transcription and expression, and its potential biological mechanisms.Methods Differentially expressed genes related to Hg exposure were identified and validated using gene expression microarray analysis and extended validation. Hg-exposed cell models and PTEN lowexpression models were established in vitro using 293T cells. PTEN gene expression was assessed using qRT-PCR, and Western blotting was used to measure PTEN, AKT, and PI3K protein levels. IL-6 expression was determined by ELISA.Results Combined findings from gene expression microarray analysis, bioinformatics, and population expansion validation indicated significant downregulation of the PTEN gene in the high-concentration Hg exposure group. In the Hg-exposed cell model(25 and 10 μmol/L), a significant decrease in PTEN expression was observed, accompanied by a significant increase in PI3K, AKT, and IL-6 expression.Similarly, a low-expression cell model demonstrated that PTEN gene knockdown led to a significant decrease in PTEN protein expression and a substantial increase in PI3K, AKT, and IL-6 levels.Conclusion This is the first study to report that Hg exposure downregulates the PTEN gene, activates the PI3K/AKT regulatory pathway, and increases the expression of inflammatory factors, ultimately resulting in kidney inflammation. 展开更多
关键词 PTEN Occupational mercury exposure Occupational health pi3k/akt pathway 293T cell IL-6
下载PDF
Hypoglycemic mechanism of Tegillarca granosa polysaccharides on type 2 diabetic mice by altering gut microbiota and regulating the PI3K-akt signaling pathwaye 被引量:1
2
作者 Qihong Jiang Lin Chen +5 位作者 Rui Wang Yin Chen Shanggui Deng Guoxin Shen Shulai Liu Xingwei Xiang 《Food Science and Human Wellness》 SCIE CSCD 2024年第2期842-855,共14页
Type 2 diabetes mellitus(T2DM)is a complex metabolic disease threatening human health.We investigated the effects of Tegillarca granosa polysaccharide(TGP)and determined its potential mechanisms in a mouse model of T2... Type 2 diabetes mellitus(T2DM)is a complex metabolic disease threatening human health.We investigated the effects of Tegillarca granosa polysaccharide(TGP)and determined its potential mechanisms in a mouse model of T2DM established through a high-fat diet and streptozotocin.TGP(5.1×10^(3) Da)was composed of mannose,glucosamine,rhamnose,glucuronic acid,galactosamine,glucose,galactose,xylose,and fucose.It could significantly alleviate weight loss,reduce fasting blood glucose levels,reverse dyslipidemia,reduce liver damage from oxidative stress,and improve insulin sensitivity.RT-PCR and Western blotting indicated that TGP could activate the phosphatidylinositol-3-kinase/protein kinase B signaling pathway to regulate disorders in glucolipid metabolism and improve insulin resistance.TGP increased the abundance of Allobaculum,Akkermansia,and Bifidobacterium,restored the microbiota abundance in the intestinal tracts of mice with T2DM,and promoted short-chain fatty acid production.This study provides new insights into the antidiabetic effects of TGP and highlights its potential as a natural hypoglycemic nutraceutical. 展开更多
关键词 Tegillarca granosa polysaccharide Type 2 diabetes mellitus Glycolipid metabolism pi3k/akt signaling pathway
下载PDF
Thymoquinone affects hypoxia-inducible factor-1αexpression in pancreatic cancer cells via HSP90 and PI3K/AKT/mTOR pathways 被引量:1
3
作者 Zhan-Xue Zhao Shuai Li Lin-Xun Liu 《World Journal of Gastroenterology》 SCIE CAS 2024年第21期2793-2816,共24页
BACKGROUND Pancreatic cancer(PC)is associated with some of the worst prognoses of all major cancers.Thymoquinone(TQ)has a long history in traditional medical practice and is known for its anti-cancer,anti-inflammatory... BACKGROUND Pancreatic cancer(PC)is associated with some of the worst prognoses of all major cancers.Thymoquinone(TQ)has a long history in traditional medical practice and is known for its anti-cancer,anti-inflammatory,anti-fibrosis and antioxidant pharmacological activities.Recent studies on hypoxia-inducible factor-1α(HIF-1α)and PC have shown that HIF-1αaffects the occurrence and development of PC in many aspects.In addition,TQ could inhibit the development of renal cancer by decreasing the expression of HIF-1α.Therefore,we speculate whether TQ affects HIF-1αexpression in PC cells and explore the mechanism.AIM To elucidate the effect of TQ in PC cells and the regulatory mechanism of HIF-1αexpression.METHODS Cell counting kit-8 assay,Transwell assay and flow cytometry were performed to detect the effects of TQ on the proliferative activity,migration and invasion ability and apoptosis of PANC-1 cells and normal pancreatic duct epithelial(hTERTHPNE)cells.Quantitative real-time polymerase chain reaction and western blot assay were performed to detect the expression of HIF-1αmRNA and protein in PC cells.The effects of TQ on the HIF-1αprotein initial expression pathway and ubiquitination degradation in PANC-1 cells were examined by western blot assay and co-immunoprecipitation.RESULTS TQ significantly inhibited proliferative activity,migration,and invasion ability and promoted apoptosis of PANC-1 cells;however,no significant effects on hTERT-HPNE cells were observed.TQ significantly reduced the mRNA and protein expression levels of HIF-1αin PANC-1,AsPC-1,and BxPC-3 cells.TQ significantly inhibited the expression of the HIF-1αinitial expression pathway(PI3K/AKT/mTOR)related proteins,and promoted the ubiquitination degradation of the HIF-1αprotein in PANC-1 cells.TQ had no effect on the hydroxylation and von Hippel Lindau protein mediated ubiquitination degradation of the HIF-1αprotein but affected the stability of the HIF-1αprotein by inhibiting the interaction between HIF-1αand HSP90,thus promoting its ubiquitination degradation.CONCLUSION The regulatory mechanism of TQ on HIF-1αprotein expression in PC cells was mainly to promote the ubiquitination degradation of the HIF-1αprotein by inhibiting the interaction between HIF-1αand HSP90;Secondly,TQ reduced the initial expression of HIF-1αprotein by inhibiting the PI3K/AKT/mTOR pathway. 展开更多
关键词 THYMOQUINONE Pancreatic cancer Hypoxia-inducible factor- pi3k/akt/MTOR HSP90
下载PDF
YBX1 inhibits mitochondrial-mediated apoptosis in ischemic heart through the PI3K/AKT signaling pathway 被引量:1
4
作者 Fangfang Bi Miao Cao +10 位作者 Yuquan Wang Qingming Pan Zehong Jing Danyang Bing Lifang Lyu Tong Yu Tianyu Li Xuelian Li Haihai Liang Hongli Shan Yuhong Zhou 《Frigid Zone Medicine》 2024年第1期51-64,共14页
Background:Myocardial infarction(MI)is associated with higher morbidity and mortality in the world,especially in cold weather.YBX1 is an RNA-binding protein that is required for pathological growth of cardiomyocyte by... Background:Myocardial infarction(MI)is associated with higher morbidity and mortality in the world,especially in cold weather.YBX1 is an RNA-binding protein that is required for pathological growth of cardiomyocyte by regulating cell growth and protein synthesis.But YBX1,as an individual RNA-binding protein,regulates cardiomyocytes through signaling cascades during myocardial infarction remain largely unexplored.Methods:In vivo,the mouse MI model was induced by ligating the left anterior descending coronary artery(LAD),and randomly divided into sham operation group,MI group,MI+YBX1 knockdown/overexpression group and MI+negative control(NC)group.The protective effect of YBX1 was verified by echocardiography and triphenyltetrazolium chloride staining.In vitro,mitochondrial-dependent apoptosis was investigated by using CCK8,TUNEL staining,reactive oxygen species(ROS)staining and JC-1 staining in hypoxic neonatal mouse cardiomyocytes(NMCMs).Results:YBX1 expression of cardiomyocytes was downregulated in a mouse model and a cellular model on the ischemic condition.Compared to mice induced by MI,YBX1 overexpression mediated by adeno-associated virus serotype 9(AAV9)vector reduced the infarcted size and improved cardiac function.Knockdown of endogenous YBX1 by shRNA partially aggravated ischemia-induced cardiac dysfunction.In hypoxic cardiomyocytes,YBX1 overexpression decreased lactic dehydrogenase(LDH)release,increased cell viability,and inhibited apoptosis by affecting the expression of apoptosis related proteins,while knockdown of endogenous YBX1 by siRNA had the opposite effect.Overexpression of YBX1 restored mitochondrial dysfunction in hypoxic NMCMs by increasing mitochondrial membrane potential and ATP content and decreasing ROS.In hypoxic NMCMs,YBX1 overexpression increased the expression of phosphorylated phosphatidylinositol 3 kinase(PI3K)/AKT,and the anti-apoptosis effect of YBX1 was eliminated t by LY294002,PI3K/AKT inhibitor.Conclusion:YBX1 protected the heart from ischemic damage by inhibiting the mitochondrial-dependent apoptosis through PI3K/AKT pathway.It is anticipated that YBX1 may serve as a novel therapeutic target for MI. 展开更多
关键词 YBX1 pi3k/akt apoptosis mitochondrial function myocardial infarction
下载PDF
益智仁-乌药药对调控PI3K/Akt/mTOR通路介导细胞自噬保护肾小球足细胞的作用机制研究 被引量:4
5
作者 尹德辉 唐诗韵 +2 位作者 吴珠 陈应奇 朱叶 《中华中医药学刊》 CAS 北大核心 2024年第1期30-34,I0004-I0006,共8页
目的研究益智仁-乌药药对通过调控PI3K/Akt/mTOR信号通路促进足细胞自噬治疗糖尿病肾病(Diabetic Nephropathy,DN)的作用。方法60只造模成功的C57BL/KSJ-db/db(以下简称db/db)小鼠随机分为模型组、二甲双胍组、缬沙坦组、益智仁-乌药药... 目的研究益智仁-乌药药对通过调控PI3K/Akt/mTOR信号通路促进足细胞自噬治疗糖尿病肾病(Diabetic Nephropathy,DN)的作用。方法60只造模成功的C57BL/KSJ-db/db(以下简称db/db)小鼠随机分为模型组、二甲双胍组、缬沙坦组、益智仁-乌药药对(低、中、高剂量)组,每组10只;另取10只C57BL/KSJ-db/m(以下简称db/m)小鼠为正常组,正常组和模型组给予生理盐水,治疗组小鼠分别给予相应药物,给药8周后检测小鼠肾脏病理学改变,足细胞自噬体数量、结构及相关蛋白表达。结果与模型组相比,益智仁-乌药药对组可显著减轻糖尿病肾病小鼠肾小球基底膜增厚情况,增加足细胞自噬体数量,显著升高自噬相关蛋白表达(P<0.05),降低PI3K/Akt/mTOR信号通路相关蛋白的表达(P<0.05)。其中益智仁-乌药药对高剂量组各指标改善优于益智仁-乌药低、中剂量组。结论益智仁-乌药药对通过抑制PI3K/Akt/mTOR信号通路激活,提高足细胞自噬水平,减轻足细胞损伤,发挥治疗糖尿病肾病的作用。 展开更多
关键词 益智仁-乌药药对 糖尿病肾病 pi3k/akt/MTOR 足细胞 自噬
下载PDF
自拟平衡针灸通过调控PI3K-AKT信号通路及血清GABA水平对老年失眠的治疗作用 被引量:5
6
作者 许珂 蔡丽伟 +3 位作者 周书喆 刘晨 刘淑清 马学红 《中国老年学杂志》 北大核心 2024年第2期338-342,共5页
目的探讨自拟平衡针灸通过调控磷脂酰肌醇3激酶(PI3K)-蛋白激酶B(AKT)信号通路及血清氨基丁酸(GABA)水平对老年失眠的治疗作用。方法以老年失眠患者120例作为研究对象,按照随机分组原则分为研究组及对照组,各60例。两组均采取阿普唑仑... 目的探讨自拟平衡针灸通过调控磷脂酰肌醇3激酶(PI3K)-蛋白激酶B(AKT)信号通路及血清氨基丁酸(GABA)水平对老年失眠的治疗作用。方法以老年失眠患者120例作为研究对象,按照随机分组原则分为研究组及对照组,各60例。两组均采取阿普唑仑进行治疗,研究组在此基础上联合采取自拟平衡针灸进行治疗,两组均治疗4 w。比较两组治疗效果、临床改善指标、PI3K-AKT信号通路及GABA、多导睡眠监测仪指标、睡眠质量之间的差异。结果研究组治疗总有效率显著高于对照组(P<0.05)。治疗后,两组睡眠潜伏期、睡眠总时间及觉醒次数均显著改善,且研究组睡眠潜伏期、觉醒次数显著低于对照组(P<0.05),睡眠总时间显著高于对照组(P<0.05)。两组PI3K、AKT及GABA均显著改善,且研究组PI3K、AKT显著低于对照组,GABA显著高于对照组(P<0.05)。两组总睡眠时间(TST)、睡眠效率(SE),第一(TS1)、二(TS2)、三(TS3)及四期(TS4)睡眠、快速眼动睡眠时间(REM)、觉醒期时间(WASO)、睡眠潜伏期时间(SL)均显著改善,且研究组以上指标改善均显著优于对照组(P<0.05)。两组日间功能障碍、睡眠质量、睡眠时间、睡眠障碍及入睡时间均显著改善,且研究组日间功能障碍、睡眠质量、睡眠时间、睡眠障碍及入睡时间显著优于对照组(P<0.05)。结论自拟平衡针灸通过调控PI3K-AKT信号通路及血清GABA水平,有效降低局部炎性反应,优化神经系统的递质传递,有效改善患者的治疗效果。 展开更多
关键词 平衡针灸 磷脂酰肌醇3激酶(pi3k)-蛋白激酶B(akt) 氨基丁酸(GABA) 失眠
下载PDF
葛根芩连汤通过IRS-1/PI3K/AKT通路对胃肠湿热型2型糖尿病大鼠糖脂代谢的影响 被引量:1
7
作者 王久玉 尚佳 +4 位作者 王晓青 李雅坤 王改仙 梁元磊 赵羊 《长春中医药大学学报》 2024年第6期634-639,共6页
目的探究葛根芩连汤通过胰岛素受体底物-1(IRS-1)/磷脂酰肌醇3激酶(PI3K)/蛋白激酶B(AKT)通路对胃肠湿热型2型糖尿病大鼠糖脂代谢的影响。方法将40只SD大鼠随机分为正常组(2 mL生理盐水灌胃)、造模组(2 mL生理盐水灌胃)、二甲双胍组(4.1... 目的探究葛根芩连汤通过胰岛素受体底物-1(IRS-1)/磷脂酰肌醇3激酶(PI3K)/蛋白激酶B(AKT)通路对胃肠湿热型2型糖尿病大鼠糖脂代谢的影响。方法将40只SD大鼠随机分为正常组(2 mL生理盐水灌胃)、造模组(2 mL生理盐水灌胃)、二甲双胍组(4.17 mg/100 g二甲双胍灌胃)和葛根芩连汤组(1 g/100 g葛根芩连汤灌胃),每组10只。采用高脂高糖饲料加腹腔注射链脲佐菌素(STZ)构建2型糖尿病大鼠模型,随后喂食油脂、42°白酒及蜂蜜水构建胃肠湿热型2型糖尿病大鼠模型。测量各组大鼠不同时间节点体质量,血糖仪测定空腹血糖(FBG);ELISA检测空腹胰岛素(FINS)、三酰甘油(TG)、总胆固醇(TC)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)水平变化、计算胰岛素抵抗指数(HOMA-IR);HE染色检测肝组织病理学变化;检测肝组织过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)、超氧化物歧化酶(SOD)及丙二醛(MDA)含量变化。Western blot检测肝组织IRS-1、PI3K、p-PI3K、AKT及p-AKT蛋白变化。结果与正常组比较,造模组大鼠体质量、FBG、FINS及HOMA-IR、GSH-Px、CAT、SOD、IRS-1、p-PI3K/PI3K及p-AKT/AKT水平均明显下降(P<0.05)、TG、TC、IL-6、TNF-α及MDA含量均显著升高(P<0.05),可见局灶性肝实质损失。与造模组比较,二甲双胍组及葛根芩连汤组大鼠体质量、FBG、FINS及HOMA-IR、GSH-Px、CAT、SOD、IRS-1、p-PI3K/PI3K及p-AKT/AKT水平均明显升高(P<0.05)、TG、TC、IL-6、TNF-α及MDA含量均显著降低(P<0.05),显示正常的肝实质。结论葛根芩连汤可明显改善胃肠湿热型2型糖尿病糖脂紊乱,可能是通过IRS-1/PI3K/AKT通路发挥作用。 展开更多
关键词 葛根芩连汤 胃肠湿热型 2型糖尿病 糖脂代谢 IRS-1/pi3k/akt通路
下载PDF
MicroRNA (let-7b-5p)-targeted DARS2 regulates lung adenocarcinoma growth by PI3K/AKT signaling pathway
8
作者 YUANYUAN XU XIAOKE CHEN 《Oncology Research》 SCIE 2024年第3期517-528,共12页
Background:The aberrant intraellular expression of a mitochondrial aspartyl tRNA synthetase 2(DARS2)has been reported in human cancers.Nevertheless its critical role and detailed mechanism in lung adenocarcinoma(LUAD)... Background:The aberrant intraellular expression of a mitochondrial aspartyl tRNA synthetase 2(DARS2)has been reported in human cancers.Nevertheless its critical role and detailed mechanism in lung adenocarcinoma(LUAD)remain unexplored.Methods:Initially,The Cancer Genome Atlas(TCGA)based Gene Expression Profiling Interactive Analysis(GEPIA)database (http:/gepia.cancer-pku.cn/)was used to analyze the prognostic relevance of DARS2 expression in LUAD.Further,cell counting kit(CCK)8,immunostaining,and transwell invasion assays in LUAD cell lines in vitro,as well as DARS2 silence on LUAD by tumorigenicity experiments in wivo in nude mice,were performed.Besides,we analyzed the expression levels of p-PI3K(phosphorylated Phosphotylinosital3 kinase),PI3K,AKT(Protein Kinase B),p-AKT(phosphorylated Protein Kinase B),PCNA(proliferating cell nudear antigen),cleaved-caspase 3,E cadherin,and N-cadherin proteins using the Westem blot analysis.Results:LUAD tissues showed higher DARS2 expression compared to normal tissues.Upregulation of DARS2 could be related to Tumor-Node-Metastasis(TNM)stage,high lymph node metastasis,and inferior prognosis.DARS2 silence decreased the proliferation,migration,and invasion abilities of LUAD cells.In addition,the DARS2 downregulation decreased the PCNA and N-cadherin expression and increased cleaved:caspase 3 and E cadherin expressions in LUAD cells,coupled with the inactivation of the PI3K/AKT signaling pathway.Moreover,DARS2 silence impaired the tumonigenicity of LUAD in vivo.Interestingly,let:7b-5p could recognize DARS2 through a complementary sequence.Mechanistically,the increased let 7b 5p expression attenuated the promo oncogenic action of DARS2 during LUAD progression,which were inversely correlated to each other in the LUAD tssues Conclusion:In summary,let 7b-5p,downregulated DARS2 expression,regulating the progression of LUAD cells by the PI3K/AKT signaling pathway. 展开更多
关键词 Lung adenocarcinoma Prognosis pi3k/akt pathway Mitochondrial asparty-tRNA synthetase MICRORNAS
下载PDF
Alleviatory effect of isoquercetin on benign prostatic hyperplasia via IGF-1/PI3K/Akt/mTOR pathway
9
作者 Young-Jin Choi Meiqi Fan +2 位作者 Nishala Erandi Wedamulla Yujiao Tang Eun-Kyung Kim 《Food Science and Human Wellness》 SCIE CSCD 2024年第3期1698-1710,共13页
We evaluated the effect of isoquercetin(quercetin-O-3-glucoside-quercetin,IQ)as a functional component of Abeliophyllum disistichum Nakai ethanol extract(ADLE)on prostate cell proliferation and apoptosis and its effec... We evaluated the effect of isoquercetin(quercetin-O-3-glucoside-quercetin,IQ)as a functional component of Abeliophyllum disistichum Nakai ethanol extract(ADLE)on prostate cell proliferation and apoptosis and its effects on the IGF-1/PI3K/Akt/mTOR pathway in benign prostatic hyperplasia(BPH).Metabolites in ADLE were analyzed using UHPLC-qTOF-MS and HPLC.IQ was orally administered(1 or 10 mg/kg)to a testosterone propionate-induced BPH rat model,and its effects on the prostate weight were evaluated.The effect of IQ on androgen receptor(AR)signaling was analyzed in LNCaP cells.Whether IGF-1 and IQ affect the IGF-1/PI3K/Akt/mTOR pathway in BPH-1 cells was also examined.The metabolites in ADLE were identified and quantified,which confirmed that ADLE contained abundant IQ(20.88 mg/g).IQ significantly reduced the prostate size in a concentration-dependent manner in a BPH rat model,and significantly decreased the expression of AR signaling factors in the rat prostate tissue and LNCaP cells in a concentration-dependent manner.IQ also inhibited the PI3K/AKT/mTOR pathway activated by IGF-1 treatment in BPH-1 cells.In BPH-1 cells,IQ led to G0/G1 arrest and suppressed the expression of proliferation factors while inducing apoptosis.Thus,IQ shows potential for use as a pharmaceutical and nutraceutical for BPH. 展开更多
关键词 ISOQUERCETIN Benign prostatic hyperplasia Androgen receptor signaling pi3k/akt/mtor pathway
下载PDF
Wedelolactone attenuates sepsis-associated acute liver injury by regulating the macrophage M1/M2 polarization balance through the PI3K/AKT/NF-κB signalling pathway
10
作者 Wang-Ting Li Jin-Yi Chen +7 位作者 Shao-Jie Huang Dong-Mei Hu Xing-Ru Tao Fei Mu Jing-Yi Zhao Chao Guo Jia-Lin Duan Jing-Wen Wang 《Traditional Medicine Research》 2024年第11期1-11,共11页
Background:Liver injury caused by sepsis seriously impairs the normal physiology of the liver.Wedelactone(WED)has an obvious anti-inflammatory effect against liver damage caused by various factors.Nevertheless,further... Background:Liver injury caused by sepsis seriously impairs the normal physiology of the liver.Wedelactone(WED)has an obvious anti-inflammatory effect against liver damage caused by various factors.Nevertheless,further research is needed to determine if WED might mitigate acute liver damage linked to sepsis by influencing macrophage polarization.Methods:We first assessed the effect of WED on lipopolysaccharides-triggered liver injury by biochemistry assay and tissue staining.Inflammatory factors were assessed using the ELISA kits.The expression of Cluster of Differentiation 86(CD86)and Cluster of Differentiation 206(CD206)was measured by immunofluorescence assay.The protein levels of inducible nitric oxide sythase(iNOS),Arginase 1(Arg-1),phosphatidylinositol 3-kinase(PI3K),protein kinase B(AKT),PI3K phosphorylation(p-PI3K),AKT phosphorylation(p-AKT),inhibitor of kappa B kinase(IKK),inhibitor of kappa B(IκB),and nuclear factor kappa-B(NF-κB)p65 were quantified by western blot analysis.Results:WED decreased the level of alanine aminotransferase(ALT),aspartate aminotransferase(AST),alkaline phosphatase(ALP)and malondialdehyde,and increased the activity of superoxide dismutase(SOD)and glutathione peroxidase(GSH-PX).Moreover,WED exerted effective anti-inflammatory effects by decreasing the level of Tumor necrosis factor-α(TNF-α)and Interleukin 6(IL-6)and increasing the level of Interleukin 10(IL-10)in serum and cells.WED not only decreased CD86 and iNOS expression but also increased CD206 and Arg-1 expression.WED also downregulated the increased expression of PI3K,AKT,p-PI3K,p-AKT,IKK,and NF-κB p65 induced by lipopolysaccharides,while up-regulated the decreased expression of IκB.Besides,LY294002 with WED decreased the expression of protein PI3K,AKT,p-PI3K,p-AKT,IKK and NF-κB p65,and raised the expression of IκBα.Conclusion:Wedelolactone could attenuate sepsis-associated acute liver injury,and its mechanism may be associated with balancing pro-inflammatory and anti-inflammatory by the regulation of M1/M2 macrophage polarization via the PI3K/AKT/NF-κB signaling pathway. 展开更多
关键词 Wedelactone SEPSIS liver injury macrophage polarization pi3k/akt/NF-κB
下载PDF
Mechanism of stilbene glycosides on apoptosis of SH-SY5Y cells via regulating PI3K/AKT signaling pathway
11
作者 KANG Bi-qian LI Yue +8 位作者 HE Xiao-xuan XIAO Zhen HU Rui LUO Chen-liang QIAO Ming-yu WU Gui-you LI Zhen-zhong ZHU Xiao-ying HUANG Zhong-shi 《Journal of Hainan Medical University》 CAS 2024年第1期8-14,共7页
Objective:To investigate the effects of stilbene glycoside(TSG)on okadaic acid-induced apoptosis in human neuroblastoma cells(SH-SY5Y)via the PI3K/AKT pathway.Methods:The optimal concentration of OA was screened by CC... Objective:To investigate the effects of stilbene glycoside(TSG)on okadaic acid-induced apoptosis in human neuroblastoma cells(SH-SY5Y)via the PI3K/AKT pathway.Methods:The optimal concentration of OA was screened by CCK-8 assay,and SH-SY5Y cells were divided into control group,model group,TSG group,LY294002 group and LY294002+TSG group.The proliferation and apoptosis in each group were detected by CCK-8 and TUNEL assays;Western blotting method and real-time fluorescence quantitative polymerase chain reaction was used to detect the expression of PI3K,P-PI3K(Y607),AKT,P-AKT(Ser473),Bcl-2 and Bax proteins.The relative protein expression was represented by P-PI3K(Y607)/PI3K,P-AKT(Ser473)/AKT and Bcl-2/Bax gray ratio.Results:CCK-8 screened the optimal concentration of OA as 40 nmol/L.Compared with the control group,the model group increased relative cell viability,decreased apoptosis rate,the pathway and apoptotic proteins expression levels of P-PI3K(Y607)/PI3K,P-AKT(Ser473)/AKT and Bcl-2/Bax were decreased,and the mRNA expression levels of PI3K,AKT and Bcl-2 were decreased.Bax mRNA expression level increased(P<0.05);Compared with model group,TSG group increased relative cell viability,decreased apoptosis rate,increased protein expression levels of P-PI3K(Y607)/PI3K,P-AKT(Ser473)/AKT,Bcl-2/Bax,and increased mRNA expression levels of PI3K,AKT,and Bcl-2.Bax mRNA expression decreased(P<0.05),LY294002 group decreased relative cell viability,increased apoptosis rate,P-PI3K(Y607)/PI3K protein expression levels were significantly decreased(P<0.05),P-AKT(Ser473)/AKT and Bcl-2/Bax protein expression levels were significantly decreased,but there was no statistical significance,PI3K,AKT and Bcl-2 mRNA expression levels were decreased,and Bax mRNA expression levels were increased(all P<0.05);Compared with LY294002 group,LY294002+TSG group increased relative cell viability,decreased apoptosis rate,and the protein expression levels of P-PI3K(Y607)/PI3K,P-AKT(Ser473)/AKT and Bcl-2/Bax were increased.The mRNA expression levels of PI3K,AKT,Bcl-2 were increased,Bax was decreased(all P<0.05).Conclusion:Stilbene glycoside may alleviate okadaic acid-induced apoptosis in SH-SY5Y cells by interfering with the PI3K/AKT signaling pathway,which in turn regulates the expression of apoptotic factors such as Bcl-2 and Bax. 展开更多
关键词 2 3 5 4'-tetrahydroxystilbene 2-O-glucopyranoside Alzheimer disease LY294002 Phosphatidylinositol 3-kinase(pi3k)/protein kinase B(akt) Cell proliferation APOPTOSIS
下载PDF
(Pyr1)Apelin-13对布比卡因诱导停搏乳鼠心肌细胞PI3K/Akt通路的干预
12
作者 林婷婷 陈超星 +3 位作者 鲍娜娜 施克俭 董娇娇 刘乐 《温州医科大学学报》 CAS 2024年第2期106-111,共6页
目的:探讨Apelin/APJ系统在逆转布比卡因心肌毒性中的作用及机制。方法:提取乳鼠心肌细胞进行原代培养,随机分为4组:空白培养基组(DMSO组)、布比卡因1 mmol/L(Bup组)、(Pyr1)Apelin-132μmol/L组(Apl组)和布比卡因1 mmol/L+(Pyr1)Apelin... 目的:探讨Apelin/APJ系统在逆转布比卡因心肌毒性中的作用及机制。方法:提取乳鼠心肌细胞进行原代培养,随机分为4组:空白培养基组(DMSO组)、布比卡因1 mmol/L(Bup组)、(Pyr1)Apelin-132μmol/L组(Apl组)和布比卡因1 mmol/L+(Pyr1)Apelin-132μmol/L组(BAp组)。记录各组细胞基础自主搏动次数后,按照相应分组给药处理6 h。处理完毕后时间记为T0,记录T0至T12不同时间的细胞搏动次数;电镜下观察T12时心肌细胞线粒体形态;比色法检测T12时细胞培养液乳酸脱氢酶(LDH)含量;ELISA检测T12时心肌细胞中Apelin-13浓度;Western blot检测T12时心肌细胞中APJ、PI3K、Akt、p-PI3K、p-Akt蛋白的表达。结果:T0时Bup组全部心肌细胞停止搏动。与DMSO组比较,Bup组细胞搏动次数显著减少(P<0.05),线粒体肿胀空泡化,培养液LDH含量明显上升(P<0.05),心肌细胞中Apelin-13、APJ、p-PI3K和p-Akt蛋白表达均下调(P<0.05)。与Bup组比较,BAp组细胞搏动次数显著增加(P<0.05),线粒体结构明显改善,培养液LDH含量明显下降(P<0.05),心肌细胞中Apelin-13,APJ、p-PI3K和p-Akt蛋白表达均上调(P<0.05)。结论:(Pyr1)Apelin-13可逆转布比卡因诱导的心肌细胞停搏,机制也许与激活PI3K/Akt蛋白磷酸化有关。 展开更多
关键词 (Pyr1)Apelin-13 布比卡因 心肌细胞 pi3k/akt通路
下载PDF
黄芪影响缺氧微环境中骨髓间充质干细胞增殖活性的PI3K-AKT信号通路分析
13
作者 田启会 张亮 龙亚丽 《畜牧兽医学报》 CAS CSCD 北大核心 2024年第1期346-354,共9页
基于PI3K/AKT信号通路研究黄芪对缺氧环境中骨髓间充质干细胞(bone marrow mesenchymal stem cells,BMSCs)成骨分化的细胞活性的影响。分别以黄芪冻干粉溶液低、中、高剂量(100、200和300μg·mL^(-1))干预低氧浓度(10%)环境中成骨... 基于PI3K/AKT信号通路研究黄芪对缺氧环境中骨髓间充质干细胞(bone marrow mesenchymal stem cells,BMSCs)成骨分化的细胞活性的影响。分别以黄芪冻干粉溶液低、中、高剂量(100、200和300μg·mL^(-1))干预低氧浓度(10%)环境中成骨分化培养的BMSCs,通过高内涵实时成像系统观察BMSCs动态增殖情况及分化代数;进行无标记示踪模拟细胞运动轨迹,分析各组细胞运动速度、位移距离和路程的情况;通过激光共聚焦显微镜观察细胞线粒体膜电位,通过免疫荧光和RT-PCR检测PI3K/AKT信号通路相关蛋白和基因表达水平的变化。结果显示:与对照组相比,10%低氧浓度条件下BMSCs增殖减慢、分化代数减少,运动速度减慢,位移距离和路程减少,线粒体膜电位活性降低,p-PI3K、p-AKT蛋白表达降低,PI3K和AKT基因表达水平降低,差异有统计学意义(P<0.01);与低氧组相比,黄芪冻干粉溶液干预后,能显著维持缺氧环境中BMSCs增殖和分化活性,运动活力升高,线粒体膜电位活性提高,p-JAK2、p-STAT3蛋白和PI3K、AKT基因表达升高,差异有统计学意义(P<0.05或0.01)。黄芪可能通过激活PI3K/AKT信号通路维持缺氧条件下BMSCs的增殖活性。 展开更多
关键词 缺氧 骨髓间充质干细胞 黄芪 增殖活性 pi3k/akt信号通路
下载PDF
ISLR通过活化PI3K-AKT通路促进上皮-间质转化影响骨肉瘤细胞恶性进展研究
14
作者 李青山 郭红生 贾天阳 《现代检验医学杂志》 CAS 2024年第5期17-21,29,共6页
目的 研究含免疫球蛋白超家族亮氨酸丰富重复蛋白(immunoglobulin superfamily containing leucine-rich repeat protein,ISLR)参与骨肉瘤细胞恶性进展的作用及其潜在调节机制。方法 通过实时定量聚合酶链反应(qRT-PCR)检测骨肉瘤组织... 目的 研究含免疫球蛋白超家族亮氨酸丰富重复蛋白(immunoglobulin superfamily containing leucine-rich repeat protein,ISLR)参与骨肉瘤细胞恶性进展的作用及其潜在调节机制。方法 通过实时定量聚合酶链反应(qRT-PCR)检测骨肉瘤组织和细胞中ISLR mRNA水平。通过转染ISLR短发夹RNA(short hairpin RNA,shRNA)序列或阴性对照shRNA(negative-control shRNA,NC shRNA)序列至U2OS细胞,后用磷脂酰肌醇3激酶(phosphatidylinositol3 kinase,PI3K)激活剂740 Y-P处理细胞。通过CCK-8法、Transwell实验和流式细胞术分别检测细胞活力、侵袭能力和细胞凋亡率。蛋白印迹实验(Western blot)检测ISLR蛋白、上皮-间质转化(epithelial-mesenchymal transition,EMT)相关蛋白[上皮钙黏蛋白(epitheia-cadherin,E-cadherin)、神经钙黏蛋白(nerve-cadherin,N-cadherin)、波形蛋白(Vimentin),Snail]、PI3K/蛋白激酶B(protein kinase B,AKT)通路相关蛋白、细胞凋亡相关蛋白[半胱天冬氨酸蛋白酶3(cysteinyl aspartate-specific proteinase-3,Caspase-3),B淋巴细胞瘤-2(B cell lymphoma/leukemia-2,Bcl-2),Bcl-2相关X蛋白(Bcl-2 associated X,Bax)]和肿瘤增殖标志物Ki67蛋白表达。采用慢病毒转染的U2OS细胞注射裸鼠构建异种移植瘤模型,监测肿瘤生长情况。结果 与癌旁组织(1.01±0.02)相比,骨肉瘤组织(5.14±1.63)中ISLR mRNA水平显著上调,差异具有统计学意义(t=-14.332,P<0.001)。与正常人成骨细胞hFOB1.19(1.01±0.01)相比,骨肉瘤细胞MG63(3.05±0.57),U2OS(4.55±0.79),HOS(2.46±0.41),Saos-2(2.62±0.44)和143B(3.62±0.51)中ISLR mRNA相对表达均显著升高,差异具有统计学意义(t=4.883,8.473,3.471,3.854,6.247,均P<0.05)。与对照组和NC shRNA组比较沉默ISLR明显抑制了U2OS细胞增殖(t=6.593,6.835)及侵袭(t=8.621,8.448),促进细胞凋亡(t=25.505,25.574),差异具有统计学意义(均P<0.05)。沉默ISLR明显促进U2OS细胞中Caspase-3活性(t=13.489,13.366)及Bax蛋白(t=8.628,8.524)表达,抑制Bcl-2蛋白(t=10.948,10.775)表达,差异具有统计学意义(均P<0.05)。沉默ISLR显著促进EMT相关蛋白E-cadherin(t=15.168,15.087)表达,抑制N-cadherin(t=10.220,10.058),Vimentin(t=8.303,8.164)和Snail(t=9.211,9.384)蛋白表达,降低PI3K/AKT通路关键蛋白PI3K和AKT磷酸化水平(t=17.441,14.452),差异具有统计学意义(均P<0.05)。740 Y-P处理可逆转ISLR沉默对U2OS细胞的影响。裸鼠体内实验显示敲低ISLR显著抑制了肿瘤生长。结论 ISLR可能通过激活PI3K/AKT通路促进骨肉瘤EMT及细胞增殖、侵袭,抑制细胞凋亡,从而促进骨肉瘤进展。 展开更多
关键词 骨肉瘤 细胞增殖 上皮-间质转化 含免疫球蛋白超家族亮氨酸丰富重复蛋白 pi3k/akt通路
下载PDF
脂肪干细胞对心肌梗死大鼠心肌组织中miR-423-5p及PI3K/AKT通路的影响
15
作者 张颖 孙理华 +1 位作者 张雅玲 王娟 《解剖学研究》 CAS 2024年第5期425-430,共6页
目的探讨脂肪干细胞(ADSCs)对心肌梗死模型大鼠心肌组织中miR-423-5p、PI3K、AKT的影响。方法将实验大鼠随机分为对照组、心梗模型组(模型组)、心梗模型+rADSCs组(干预组),每组6只。对照组大鼠麻醉后仅开胸后缝合,模型组、干预组大鼠麻... 目的探讨脂肪干细胞(ADSCs)对心肌梗死模型大鼠心肌组织中miR-423-5p、PI3K、AKT的影响。方法将实验大鼠随机分为对照组、心梗模型组(模型组)、心梗模型+rADSCs组(干预组),每组6只。对照组大鼠麻醉后仅开胸后缝合,模型组、干预组大鼠麻醉后结扎前降支,干预组在缝合前心脏原位注射大鼠脂肪干细胞(10^(6)个细胞/只)。观测并称量各组大鼠心脏质量,用HE染色及Masson染色观察心肌组织病理变化,实时荧光定量PCR检测miR-423-5p、PI3K、AKT的mRNA表达情况,Western blot方法检测AKT、p-AKT、PI3K、p-PI3K的蛋白表达。结果与对照组相比,模型组、干预组大鼠的心脏组织质量显著升高,其中模型组与对照组间差异有统计学意义(P<0.05);病理结果显示模型组大鼠心肌细胞排列紊乱,细胞变性坏死严重,胶原纤维沉淀,可见明显的炎性浸润,干预组的大鼠心肌细胞的坏死情况、炎性浸润、胶原纤维沉淀较模型组明显降低;与对照组相比,模型组大鼠心肌组织中PI3K、AKT、miR-423-5p的mRNA表达水平和p-PI3K、p-AKT的蛋白表达水平显著升高(P<0.05);干预组中以上指标的表达水平较模型组显著降低(P<0.05)。结论大鼠脂肪干细胞可以降低心梗模型大鼠心肌组织损伤和纤维化,改善梗死后的心功能。其内在调控机制可能为分泌miR-423-5p,抑制PI3K、AKT的转录水平和蛋白磷酸化水平,发挥保护和治疗心肌梗死的作用。 展开更多
关键词 心肌梗死 心肌细胞 脂肪干细胞 miR-423-5p pi3k/akt通路
下载PDF
藏红花素通过PI3K/Akt/GSK-3β通路诱导人乳腺癌细胞凋亡的初步研究
16
作者 赵宁 夏利敏 宋涛 《西部中医药》 2024年第4期17-22,共6页
目的:探讨藏红花素对人乳腺癌细胞凋亡的影响及相关调控机制。方法:以人正常乳腺MCF-10A细胞和人乳腺癌MCF-7细胞为受试细胞,分别以不同浓度藏红花素0(空白对照组)、200、400、800 mg/L和LY294002(PI3K特异性抑制剂)15 mg/L干预对数生长... 目的:探讨藏红花素对人乳腺癌细胞凋亡的影响及相关调控机制。方法:以人正常乳腺MCF-10A细胞和人乳腺癌MCF-7细胞为受试细胞,分别以不同浓度藏红花素0(空白对照组)、200、400、800 mg/L和LY294002(PI3K特异性抑制剂)15 mg/L干预对数生长期MCF-10A细胞和MCF-7细胞48 h,采用四甲基偶氮唑蓝(MTT)法、克隆形成实验分别检测各组细胞增殖抑制率、细胞克隆能力,Annexin V-FITC染色法检测细胞凋亡水平,运用蛋白免疫印迹法(Western blot)检测磷脂酰肌醇3-激酶(phosphatidylinositol 3-kinase,PI3K)、磷酸化PI3K(p-PI3K)、蛋白激酶B(protein kinase B,Akt)、磷酸化Akt(p-Akt)、糖原合成酶激酶-3β(glycogen synthase kinase-3β,GSK-3β)、磷酸化GSK-3β(p-GSK-3β)、半胱氨酸天门冬氨酸蛋白酶9(cysteine aspartic proteases-9,Caspase-9)、激活型半胱氨酸天门冬氨酸蛋白酶3(cleaved cysteine aspartate protease-3,Cleaved caspase-3)、B淋巴细胞瘤2(B-cell lymphoma-2,Bcl-2)、Bcl-2相关X蛋白(bcl-2 related X protein,Bax)蛋白表达。结果:与空白对照组比较,200、400、800 mg/L藏红花素组和LY294002组MCF-10A细胞增殖抑制率、克隆数目、凋亡率,差异均无统计学意义(P>0.05);400、800 mg/L藏红花素组和LY294002组MCF-7细胞增殖抑制率升高、克隆数目降低、凋亡率升高(P<0.01);p-PI3K、p-Akt、p-GSK-3β、Bcl-2表达下调且Caspase-9、Cleaved Caspase-3、Bax表达上调(P<0.01),磷酸化率p-PI3K/PI3K、p-Akt/Akt、p-GSK-3β/GSK-3β降低(P<0.01),Bax/Bcl-2表达比值升高(P<0.01)。与LY294002组比较,800 mg/L藏红花素组MCF-7细胞增殖抑制率升高、克隆数目降低、凋亡率升高(P<0.05或P<0.01);Caspase-9、Cleaved Caspase-3、Bax表达上调(P<0.05或P<0.01),Bax/Bcl-2比值升高(P<0.01),其他指标两组间比较差异无统计学意义(P>0.05)。结论:藏红花素具有诱导人乳腺癌细胞凋亡的作用,其机制可能与抑制PI3K/Akt/GSK-3β信号通路有关。 展开更多
关键词 乳腺癌 藏红花素 增殖 细胞凋亡 pi3k/akt/GSk-3β信号通路
下载PDF
益肾活血通窍法对D-半乳糖致老化大鼠模型前庭内侧核PI3K/AKT信号通路和氧化应激的影响
17
作者 张琦 冷辉 +2 位作者 金婧 孙嘉蔚 田雨 《国际老年医学杂志》 2024年第2期162-166,共5页
目的 观察益肾活血通窍法对D-半乳糖腹腔注射致老化大鼠模型前庭内侧核磷脂酰肌醇-3激酶(PI3K)/蛋白激酶B(AKT)信号通路和氧化应激表达水平的影响,探讨益肾活血通窍法延缓前庭内侧核老化的机制。方法 18只大鼠适应性饲养7 d后随机分成... 目的 观察益肾活血通窍法对D-半乳糖腹腔注射致老化大鼠模型前庭内侧核磷脂酰肌醇-3激酶(PI3K)/蛋白激酶B(AKT)信号通路和氧化应激表达水平的影响,探讨益肾活血通窍法延缓前庭内侧核老化的机制。方法 18只大鼠适应性饲养7 d后随机分成空白组、模型组和中药组,各6只。空白组腹腔注射生理盐水500 mg/(kg·d),模型组、中药组腹腔注射D-半乳糖500 mg/(kg·d),连续注射8周。造模成功后,空白组、模型组灌服生理盐水18.45 g/(kg·d),中药组灌服益肾活血通窍方18.45 g/(kg·d),连续灌服8周。末次给药后2 h评估各组大鼠前庭功能,然后进行前庭内侧核取材,通过ELISA法检测各组血清谷胱甘肽(GSH)、丙二醛(MDA)、活性氧(ROS)的表达水平,通过Westernblot法检测各组前庭内侧核PI3K、AKT1的表达水平。结果 三组空中翻正反射实验成功率比较,差异无统计学意义(P>0.05)。模型组、中药组的头偏斜角度大于空白组,中药组的头偏斜角度小于模型组,差异均有统计学意义(P<0.05)。与空白组比较,模型组血清GSH的表达水平降低,MDA、ROS的表达水平增高,前庭内侧核组织中PI3K、AKT1表达水平降低,差异均有统计学意义(P<0.05)。与模型组比较,中药组血清GSH表达水平及前庭内侧核中PI3K、AKT1表达水平升高,血清MDA、ROS的表达水平降低,差异均有统计学意义(P<0.05)。结论 益肾活血通窍法对老化大鼠模型前庭内侧核具有保护作用,其机制可能与调控PI3K/AKT信号通路与氧化应激相关。 展开更多
关键词 益肾活血通窍法 老化 前庭内侧核 pi3k/akt信号通路 氧化应激
下载PDF
木糖醇通过调节PI3K/Akt/FoxO1/NF-κB通路改善2型糖尿病小鼠肾损伤
18
作者 张静霞 林国文 +3 位作者 黄梓彤 吴雨杭 潘思 张趁华 《福建医科大学学报》 2024年第3期159-165,共7页
目的探究木糖醇改善2型糖尿病(T2DM)肾损伤的作用机制。方法将小鼠随机分为正常对照组(NC组)、糖尿病对照组(DC组)、10%木糖醇组(DX10组)、20%木糖醇组(DX20组),每组6只。除NC组外,其余各组小鼠均用链脲佐菌素(40 mg/kg)构建T2DM模型。... 目的探究木糖醇改善2型糖尿病(T2DM)肾损伤的作用机制。方法将小鼠随机分为正常对照组(NC组)、糖尿病对照组(DC组)、10%木糖醇组(DX10组)、20%木糖醇组(DX20组),每组6只。除NC组外,其余各组小鼠均用链脲佐菌素(40 mg/kg)构建T2DM模型。造模成功后,在正常饲料中加入不同比例的木糖醇连续喂养8周。通过试剂盒检测小鼠空腹血糖(FBG);采用ELISA法测定血清中白细胞介素-6(IL-6)和肿瘤坏死因子-α(TNF-α)含量;比色法检测肾组织过氧化氢酶(CAT)、丙二醛(MDA)和总抗氧化能力(T-AOC);苏木精-伊红(H-E)染色观察肾组织的形态学变化;Western-blot法检测小鼠肾组织p-PI3K、PI3K、p-Akt、Akt、p-FoxO1、FoxO1、NF-κB、ICAM-1、Bcl-2和Bax蛋白的表达情况。结果(1)与NC组比较,DC组FBG升高(P<0.01),木糖醇干预后下降,且DX20组下降更显著(P<0.05);(2)与NC组比较,DC组IL-6和TNF-α分泌增加(P<0.0001),木糖醇干预后均下降,且DX20组下降更显著(P<0.0001);(3)与NC组比较,DC组CAT和T-AOC活性下降、MDA含量升高(P<0.01),木糖醇干预后,CAT和T-AOC活性升高而MDA含量降低(P<0.05),且DX20组变化更显著(P<0.05);(4)H-E染色显示,木糖醇干预可改善小鼠糖尿病肾损伤,且DX20组效果更佳(P<0.05);(5)Western-blot检测显示,与NC组比较,DC组小鼠肾组织中p-PI3K、p-Akt、p-FoxO1和Bcl-2/Bax均降低(P<0.0001,P<0.001,P<0.01,P<0.001)、NF-κB入核增多(P<0.0001)、ICAM-1升高(P<0.01);与DC组比较,木糖醇干预可逆转相关蛋白的变化,且DX20组变化更显著(P<0.05)。结论木糖醇可通过活化PI3K/Akt/FoxO1及抑制NF-κB通路改善T2DM小鼠肾损伤。 展开更多
关键词 木糖醇 2型糖尿病 肾损伤 pi3k/akt/FoxO1/NF-κB通路 炎症
下载PDF
调控HER4-PI3K/AKt轴对骨肉瘤恶性生物学行为和干性表达的影响
19
作者 马琨 张川 《罕少疾病杂志》 2024年第4期101-103,共3页
目的探讨HER4基因操控对骨肉瘤细胞的恶性生物学特征和干细胞样特点的影响以及可能的机制。方法用Qrt-PCR、western blotting方法分析HER4 mRNA以及蛋白水平。MTT法和集落形成法被用来评价MG-63细胞活性和增殖能力。短发夹RNA(shRNA)干... 目的探讨HER4基因操控对骨肉瘤细胞的恶性生物学特征和干细胞样特点的影响以及可能的机制。方法用Qrt-PCR、western blotting方法分析HER4 mRNA以及蛋白水平。MTT法和集落形成法被用来评价MG-63细胞活性和增殖能力。短发夹RNA(shRNA)干扰预处理、菌落形成、迁移、侵袭和western blotting实验确定HER-4调节骨肉瘤细胞增殖和侵袭/迁移的机制。采用球形成实验和CD133+细胞群检测HER-4诱导的干细胞样特征。结果HER4在骨肉瘤细胞中过表达。Sh-HER4表现出明显的细胞活力、集落形成和侵袭/迁移抑制能力。此外,HER4的敲除显著降低了CD133阳性细胞的球形大小和比例,以及干细胞标志物的表达。从机制上看,HER4通过失活PI3K/AKT通路促进骨肉瘤进展。结论综上所述,这些结果表明HER4是骨肉瘤进展和干细胞调节的一个新靶点,可能对开发治疗骨肉瘤的方法有价值。 展开更多
关键词 HER4 骨肉瘤 入侵 迁移 具备干细胞特性 pi3k/akt
下载PDF
阻断PI3K/AKT/mTOR信号对白血病HL-60细胞的影响
20
作者 郭琛 汤晶 《医学分子生物学杂志》 CAS 2024年第3期254-258,共5页
目的探讨阻断PI3K/AKT/mTOR信号对白血病细胞的影响。方法选取急性粒细胞白血病细胞HL-60,随机分为空白对照组、低浓度组、中浓度组和高浓度组,其中空白对照组给予生理盐水,低、中、高浓度组分别给予10、25和50 mol/L浓度的PI3K/AKT/mTO... 目的探讨阻断PI3K/AKT/mTOR信号对白血病细胞的影响。方法选取急性粒细胞白血病细胞HL-60,随机分为空白对照组、低浓度组、中浓度组和高浓度组,其中空白对照组给予生理盐水,低、中、高浓度组分别给予10、25和50 mol/L浓度的PI3K/AKT/mTOR信号阻断剂GDC-0349处理,采用CCK-8法检测各组细胞增殖情况,流式细胞仪检测各组细胞凋亡情况,蛋白质印迹检测PI3K/AKT/mTOR信号、凋亡相关蛋白表达。结果高浓度组细胞培养24、48和72 h时吸光度值(A)明显低于低浓度组和中浓度组(P<0.05);低浓度组、中浓度组和高浓度组细胞凋亡率明显高于空白对照组(P<0.05),其中高浓度组细胞凋亡率明显低于低浓度组和中浓度组(P<0.05);高浓度组P110、AKT和mTOR蛋白相对表达量明显低于空白对照组、低浓度组和中浓度组(P<0.05);低浓度组、中浓度组和高浓度组Bcl2和Caspase3蛋白相对表达量明显低于空白对照组(P<0.05),高浓度组Bcl2和Caspase3蛋白相对表达量明显低于空白对照组、低浓度组和中浓度组(P<0.05)。结论阻断PI3K/AKT/mTOR信号可抑制白血病HL-60细胞增殖,促进细胞凋亡。 展开更多
关键词 pi3k/akt/mTOR信号 白血病 增殖 凋亡
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部