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Expression and clinical significance of pattern recognition receptor-associated genes in hand, foot and mouth disease
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作者 Muqi Wang Huiling Deng +7 位作者 Yuan Chen Yikai Wang Yufeng Zhang Chenrui Liu Meng Zhang Ting Li Shuangsuo Dang Yaping Li 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2024年第4期173-183,I0001-I0003,共14页
Objective:To explore which pattern recognition receptors(PRRs)play a key role in the development of hand,foot,and mouth disease(HFMD)by analyzing PRR-associated genes.Methods:We conducted a comparative analysis of PRR... Objective:To explore which pattern recognition receptors(PRRs)play a key role in the development of hand,foot,and mouth disease(HFMD)by analyzing PRR-associated genes.Methods:We conducted a comparative analysis of PRR-associated gene expression in human peripheral blood mononuclear cells(PBMCs)infected with enterovirus 71(EV-A71)which were derived from patients with HFMD of different severities and at different stages.A total of 30 PRR-associated genes were identified as significantly upregulated both over time and across different EV-A71 isolates.Subsequently,ELISA was employed to quantify the expression of the six most prominent genes among these 30 identified genes,specifically,BST2,IRF7,IFI16,TRIM21,MX1,and DDX58.Results:Compared with those at the recovery stage,the expression levels of BST2(P=0.027),IFI16(P=0.016),MX1(P=0.046)and DDX58(P=0.008)in the acute stage of infection were significantly upregulated,while no significant difference in the expression levels of IRF7(P=0.495)and TRIM21(P=0.071)was found between different stages of the disease.The expression levels of BST2,IRF7,IFI16 and MX1 were significantly higher in children infected with single pathogen than those infected with mixed pathogens,and BST2,IRF7,IFI16 and MX1 expression levels were significantly lower in coxsackie B virus(COXB)positive patients than the negative patients.Expression levels of one or more of BST2,IRF7,IFI16,TRIM21,MX1 and DDX58 genes were correlated with PCT levels,various white blood cell counts,and serum antibody levels that reflect disease course of HFMD.Aspartate aminotransferase was correlated with BST2,MX1 and DDX58 expression levels.Conclusions:PRR-associated genes likely initiate the immune response in patients at the acute stage of HFMD. 展开更多
关键词 pattern recognition receptors(prrs) Hand foot and mouth disease(HFMD) Immune Enterovirus 71(EV-A71)
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Research progress of pattern recognition receptors and chronic periodontitis
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作者 Zheng-An Wang Qi-Ya Fu 《Journal of Hainan Medical University》 2022年第1期73-78,共6页
Pattern recognition receptor(PRR)is a kind of sensor which is mainly expressed on the surface of innate immune cells.It can recognize pathogen related molecular patterns(PAMPs)or damage related molecular patterns(DAMP... Pattern recognition receptor(PRR)is a kind of sensor which is mainly expressed on the surface of innate immune cells.It can recognize pathogen related molecular patterns(PAMPs)or damage related molecular patterns(DAMPs).The innate immune system uses pattern recognition receptors to recognize pathogenic microorganisms in periodontal tissues and transmit signals to downstream pathways in time,thus triggering immune responses and then eliminating them.PRR has many family members,including toll like receptor family(TLRs),C-type lectin receptor family(CLRs),retinoic acid induced gene I(RIG-I)like receptor family(RLRs)and nucleotide binding oligomer domain(NOD)like receptor family(NLRs).Among them,RLRs are cytoplasmic receptors that recognize dsRNA from RNA viruses and have little association with chronic periodontitis.In this paper,the classification and structure of TLRs,CLRs,NLRs and the role of signal transduction pathway in chronic periodontitis are reviewed.In order to enrich the pathogenesis of periodontitis,provide new ideas for the treatment and prevention of chronic periodontitis. 展开更多
关键词 pattern recognition receptor Toll like receptor C-type lectin receptor Nucleotide-binding oligomeric DOMAIN Chronic periodontitis
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Value of serum pattern recognition receptors Collectin, Dectin and CD14 detection for disease evaluation in children with hand, foot and mouth disease
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作者 Zhi-Juan Han Shou-An Wang 《Journal of Hainan Medical University》 2017年第3期129-131,共3页
Objective:To study the value of serum pattern recognition receptors Collectin, Dectin and CD14 detection for disease evaluation in children with hand, foot and mouth disease (HFMD). Methods:76 children diagnosed with ... Objective:To study the value of serum pattern recognition receptors Collectin, Dectin and CD14 detection for disease evaluation in children with hand, foot and mouth disease (HFMD). Methods:76 children diagnosed with hand, foot and mouth disease in our hospital between May 2013 and March 2016 were selected as the HFMD group of the research, 80 healthy children receiving physical examination in our hospital during the same period were selected as the control group of the research, and the serum was collected to determine the levels of pattern recognition receptors, immunoglobulins, complements, inflammatory media and target organ damage indexes. Results:Serum Collectin, Dectin and CD14 levels of HFMD group were significantly higher than those of control group (P<0.05);serum immunoglobulin G (IgG) IgM, IgA, C3 and C4 levels of HFMD group were significantly lower than those of control group (P<0.05) and negatively correlated with Collectin, Dectin and CD14 levels;serum PCT, C-reactive protein (CRP), interleukin-6 (IL-6), IL-10, tumor necrosis factor-α(TNF-α), N-terminal pro-brain natriuretic peptide (NT-proBNP), neuron-specific enolase (NSE), S100βand surfactant protein A (SP-A) levels of HFMD group were significantly higher than those of control group (P<0.05) and positively correlated with Collectin, Dectin and CD14 levels. Conclusions:High expression of serum pattern recognition receptors Collectin, Dectin and CD14 in children with hand, foot and mouth disease is closely related to the immune response, inflammatory response and target organ function damage during the disease progression. 展开更多
关键词 HAND foot and MOUTH DISEASE pattern recognition receptor Immune RESPONSE Inflammatory RESPONSE
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Toll-like receptors are potential therapeutic targets in rheumatoid arthritis 被引量:4
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作者 Siamak Sandoghchian Shotorbani 《World Journal of Biological Chemistry》 CAS 2011年第7期167-172,共6页
Toll-like receptors (TLRs) are found on the membranes of pattern recognition receptors and not only play important roles in activating immune responses but are also involved in the pathogenesis of inflammatory disease... Toll-like receptors (TLRs) are found on the membranes of pattern recognition receptors and not only play important roles in activating immune responses but are also involved in the pathogenesis of inflammatory disease, injury and cancer. Furthermore, TLRs are also able to recognize endogenous alarmins released by damaged tissue and necrosis and/or apoptotic cells and are present in numerous autoimmune diseases. Therefore, the release of endogenous TLR ligands plays an important role in initiating and driving inflammatory diseases. Increasing data suggest a role for TLR signaling in rheumatoid arthritis, which is an autoimmune disease. Although their involvement is not comprehensively understood, the TLRs signaling transducers may provide potential therapeutic targets. 展开更多
关键词 AUTOIMMUNE disease INNATE immunity pattern recognition receptors RHEUMATOID ARTHRITIS TOLL-LIKE receptors
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模式识别受体PRRs在急性肺损伤/急性呼吸窘迫综合征发病机制中的作用研究进展 被引量:8
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作者 刁一芮 丁奇 史渊源(指导) 《中国免疫学杂志》 CAS CSCD 北大核心 2022年第2期227-233,共7页
急性肺损伤(ALI)/急性呼吸窘迫综合征(ARDS)是继发于肺内或全身的炎症反应过程,它由肺泡损伤导致并形成炎症性非心源性的肺水肿。模式识别受体(PRRs)参与先天免疫系统的激活,PRRs可以启动炎症信号级联反应,并释放促炎细胞因子。本综述对... 急性肺损伤(ALI)/急性呼吸窘迫综合征(ARDS)是继发于肺内或全身的炎症反应过程,它由肺泡损伤导致并形成炎症性非心源性的肺水肿。模式识别受体(PRRs)参与先天免疫系统的激活,PRRs可以启动炎症信号级联反应,并释放促炎细胞因子。本综述对PRRs所包括的跨膜受体TLRs、胞质受体RLRs和NLRs以及下游炎症通路NF-κB、IRF、MAPK、NETs、RAGE和Nrf2信号通路及自噬进行总结,以阐述模式识别受体PRRs在ALI/ARDS发病机制中的作用。 展开更多
关键词 急性肺损伤 急性呼吸窘迫综合征 模式识别受体 发病机制
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Differential roles of RIG-Ⅰ like receptors in SARS-CoV-2 infection 被引量:1
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作者 Duo-Meng Yang Ting-Ting Geng +1 位作者 Andrew G.Harrison Peng-Hua Wang 《Military Medical Research》 SCIE CSCD 2022年第2期262-264,共3页
Retinoic acid-inducible gene Ⅰ (RIG-Ⅰ) and melanoma differentiation-associated protein 5 (MDA5) sense viral RNA and activate antiviral immune responses.Herein we investigate their functions in human epithelial cells... Retinoic acid-inducible gene Ⅰ (RIG-Ⅰ) and melanoma differentiation-associated protein 5 (MDA5) sense viral RNA and activate antiviral immune responses.Herein we investigate their functions in human epithelial cells,the primary and initial target of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).A deficiency in MDA5,RIG-Ⅰ or mitochondrial antiviral signaling protein (MAVS) enhanced viral replication.The expression of the type I/III interferon(IFN) during infection was impaired in MDA5;and MAVS;,but not in RIG-Ⅰ;,when compared to wild type (WT) cells.The mRNA level of full-length angiotensin-converting enzyme 2 (ACE2),the cellular entry receptor for SARS-CoV-2,was approximately 2.5-fold higher in RIG-Ⅰ;than WT cells.These data demonstrate MDA5 as the predominant SARS-CoV-2 sensor,IFN-independent induction of ACE2 and anti-SARS-CoV-2 role of RIG-Ⅰ in epithelial cells. 展开更多
关键词 Severe acute respiratory syndrome coronavirus 2 Pathogen pattern recognition receptor Melanoma differentiation-associated protein 5 Retinoic acid-inducible geneⅠ
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线粒体DNA激活的先天免疫在动脉粥样硬化中的研究进展
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作者 郑峻萌 王婷婷 +5 位作者 陈玉善 沈祥丽 卢明凯 尚莎莎 宗永华 解金红 《中国现代医学杂志》 CAS 2024年第19期44-50,共7页
线粒体是细胞能量制造和生物合成的控制中心。近年来,越来越多的研究强调了线粒体作为免疫调节因子的作用。功能失调的线粒体可释放线粒体DNA(mtDNA)或其他线粒体成分到细胞质或细胞外,激活机体的免疫炎症。动脉粥样硬化(AS)是一种发生... 线粒体是细胞能量制造和生物合成的控制中心。近年来,越来越多的研究强调了线粒体作为免疫调节因子的作用。功能失调的线粒体可释放线粒体DNA(mtDNA)或其他线粒体成分到细胞质或细胞外,激活机体的免疫炎症。动脉粥样硬化(AS)是一种发生在大动脉或中动脉的多因素慢性炎症疾病,可引起多种心脑血管并发症,严重危害人类的生命健康。最新研究发现,AS血管中mtDNA释放增加并伴随免疫炎症的激活。该文对mtDNA在AS血管炎症中的作用机制进行全面总结,深入讨论AS中功能失调的线粒体释放的mtDNA通过哪些模式识别受体PRRs诱导血管的免疫炎症,以期为AS的防治提供新的策略和靶点。 展开更多
关键词 动脉粥样硬化 线粒体DNA 模式识别受体 炎症
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Pattern recognition receptors in zebrafish provide functional and evolutionary insight into innate immune signaling pathways 被引量:9
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作者 Yajuan Li Yuelong Li +2 位作者 Xiaocong Cao Xiangyu Jin Tengchuan Jin 《Cellular & Molecular Immunology》 SCIE CAS CSCD 2017年第1期80-89,共10页
Pattern recognition receptors (PRRs) and their signaling pathways have essential roles in recognizing various components of pathogens as well as damaged cells and triggering inflammatory responses that eliminate inv... Pattern recognition receptors (PRRs) and their signaling pathways have essential roles in recognizing various components of pathogens as well as damaged cells and triggering inflammatory responses that eliminate invading microorganisms and damaged cells. The zebrafish relies heavily on these primary defense mechanisms against pathogens. Here, we review the major PRR signaling pathways in the zebrafish innate immune system and compare these signaling pathways in zebrafish and humans to reveal their evolutionary relationship and better understand their innate immune defense mechanisms. 展开更多
关键词 CASPASES innate immune system NOD-like receptors pattern recognition receptor RIG-I-like receptors Toll-like receptors ZEBRAFISH
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Comparative study on pattern recognition receptors in non-teleost ray-finned fishes and their evolutionary significance in primitive vertebrates 被引量:4
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作者 Yuming He Hailin Pan +1 位作者 Guojie Zhang Shunping He 《Science China(Life Sciences)》 SCIE CAS CSCD 2019年第4期566-578,共13页
Pattern recognition receptors(PRRs) play important roles in innate immunity system and trigger the specific pathogen recognition by detecting the pathogen-associated molecular patterns. The main four PRRs components i... Pattern recognition receptors(PRRs) play important roles in innate immunity system and trigger the specific pathogen recognition by detecting the pathogen-associated molecular patterns. The main four PRRs components including Toll-like receptors(TLRs), RIG-I-like receptors(RLRs), NOD-like receptors(NLRs) and C-type lectin receptors(CLRs) were surveyed in the five genomes of non-teleost ray-finned fishes(NTR) including bichir(Polypterus senegalus), American paddlefish(Polyodon spathula), alligator gar(Atractosteus spatula), spotted gar(Lepisosteus oculatus) and bowfin(Amia calva), representing all the four major basal groups of ray-finned fishes. The result indicates that all the four PRRs components have been well established in these NTR fishes. In the RLR-MAVS signal pathway, which detects intracellular RNA ligands to induce production of type I interferons(IFNs), the MAVS was lost in bichir particularly. Also, the essential genes of recognition of Lipopolysaccharide(LPS) commonly in mammals like MD2, LY96 and LBP could not be identified in NTR fishes. It is speculated that TLR4 in NTR fishes may act as a cooperator with other PRRs and has a different pathway of recognizing LPS compared with that in mammals. In addition, we provide a survey of NLR and CLR in NTR fishes. The CLRs results suggest that Group V receptors are absent in fishes and Group II and VI receptors are well established in the early vertebrate evolution. Our comprehensive research of PRRs involving NTR fishes provides a new insight into PRR evolution in primitive vertebrate. 展开更多
关键词 pattern recognition receptors(PRR) TOLL-LIKE receptors(TLR) RIG-I-like receptors(RLR) C-type lectin receptors(CLR) NOD-like receptors(NLR) innate immunity
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模式识别受体在糖尿病心肌病中的研究进展
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作者 董泽耀 庄小密 鲁静 《心血管病学进展》 CAS 2024年第6期548-551,共4页
糖尿病心肌病(DCM)是糖尿病患者死亡的主要原因,但确切调控机制仍不清楚。近年研究发现,固有免疫应答是DCM发展过程的中心环节。模式识别受体是执行固有免疫功能的重要分子,主要包括Toll样受体、NOD样受体、视黄酸诱导基因Ⅰ样受体、C... 糖尿病心肌病(DCM)是糖尿病患者死亡的主要原因,但确切调控机制仍不清楚。近年研究发现,固有免疫应答是DCM发展过程的中心环节。模式识别受体是执行固有免疫功能的重要分子,主要包括Toll样受体、NOD样受体、视黄酸诱导基因Ⅰ样受体、C型凝集素受体、黑色素瘤缺乏因子2样受体、清道夫受体和环状GMP-AMP合成酶。现就上述几种模式识别受体在DCM中作用的研究进展进行综述,以期为DCM的临床治疗提供新思路和新靶点。 展开更多
关键词 糖尿病心肌病 模式识别受体 固有免疫应答 炎症反应
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日本脑炎病毒感染睾丸间质细胞对干扰素调节因子3相关信号通路的影响
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作者 陈阊峥 汤德元 +3 位作者 罗柳 廖正波 袁盛林 陈旭 《畜牧与兽医》 CAS 北大核心 2024年第2期104-109,共6页
旨在探究日本脑炎病毒(JEV)感染睾丸间质细胞后通过激活视黄酸诱导基因Ⅰ型(RIG-Ⅰ)和Toll样受体3(TLR3)等模式识别受体后引发的先天免疫机制。建立JEV感染睾丸间质细胞模型,利用荧光定量PCR和Western blot技术检测不同感染时段细胞的R... 旨在探究日本脑炎病毒(JEV)感染睾丸间质细胞后通过激活视黄酸诱导基因Ⅰ型(RIG-Ⅰ)和Toll样受体3(TLR3)等模式识别受体后引发的先天免疫机制。建立JEV感染睾丸间质细胞模型,利用荧光定量PCR和Western blot技术检测不同感染时段细胞的RIG-Ⅰ、TLR3和干扰素调节因子3(IRF3)的转录和蛋白表达、IRF3的磷酸化以及干扰素β(IFN-β)的转录情况。结果显示:JEV感染后细胞中RIG-Ⅰ和IRF3的mRNA和蛋白表达水平均有显著升高(P<0.05),TLR3蛋白表达水平极显著上调(P<0.01),IRF3磷酸化水平极显著上调(P<0.001),IFN-β转录水平显著升高(P<0.05)。结果表明:JEV感染可激活睾丸间质细胞的RIG-Ⅰ和TLR3受体,进而激活IRF3磷酸化,启动IFN-β的分泌,启动机体的先天性免疫抗病毒免反应。 展开更多
关键词 日本脑炎病毒 模式识别受体 干扰素调节因子3 先天免疫
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Expansion of pathogen recognition specificity in plants using pattern recognition receptors and artificially designed decoys 被引量:6
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作者 Lifan Sun Jun Qin +1 位作者 Kailun Wang Jie Zhang 《Science China(Life Sciences)》 SCIE CAS CSCD 2017年第8期797-805,共9页
Pathogen/microbe-associated molecular patterns(PAMPs/MAMPs) are recognized by plant pattern recognition receptors(PRRs)localized on the cell surface to activate immune responses.This PAMP-triggered immunity(PTI) confe... Pathogen/microbe-associated molecular patterns(PAMPs/MAMPs) are recognized by plant pattern recognition receptors(PRRs)localized on the cell surface to activate immune responses.This PAMP-triggered immunity(PTI) confers resistance to a broad range of pathogenic microbes and,therefore,has a great potential for genetically engineering broad-spectrum resistance by transferring PRRs across plant families.Pathogenic effectors secreted by phytopathogens often directly target and inhibit key components of PTI signaling pathways via diverse biochemical mechanisms.In some cases,plants have evolved to produce decoy proteins that mimic the direct virulence target,which senses the biochemical activities of pathogenic effectors.This kind of perception traps the effectors of erroneous targeting and results in the activation of effector-triggered immunity(ETI) instead of suppressing PTI.This mechanism suggests that artificially designed decoy proteins could be used to generate new recognition specificities in a particular plant.In this review,we summarize recent advances in research investigating PAMP recognition by PRRs and virulence effector surveillance by decoy proteins.Successful expansion of recognition specificities,conferred by the transgenic expression of EF-Tu receptor(EFR) and AvrPphB susceptible 1(PBS1) decoys,has highlighted the considerable potential of PRRs and artificially designed decoys to expand plant resistance spectra and the need to further identify novel PRRs and decoys. 展开更多
关键词 pattern recognition receptor EFFECTOR DECOY PAMP-triggered immunity resistance
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Roles of pattern recognition receptors in diabetic nephropathy 被引量:1
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作者 Zhi-feng ZHOU Lei JIANG +4 位作者 Qing ZHAO Yu WANG Jing ZHOU Qin-kai CHEN Jin-lei LV 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2020年第3期192-203,共12页
Diabetic nephropathy(DN)is currently the most common complication of diabetes.It is considered to be one of the leading causes of end-stage renal disease(ESRD)and affects many diabetic patients.The pathogenesis of DN ... Diabetic nephropathy(DN)is currently the most common complication of diabetes.It is considered to be one of the leading causes of end-stage renal disease(ESRD)and affects many diabetic patients.The pathogenesis of DN is extremely complex and has not yet been clarified;however,in recent years,increasing evidence has shown the important role of innate immunity in DN pathogenesis.Pattern recognition receptors(PRRs)are important components of the innate immune system and have a significant impact on the occurrence and development of DN.In this review,we classify PRRs into secretory,endocytic,and signal transduction PRRs according to the relationship between the PRRs and subcellular compartments.PRRs can recognize related pathogen-associated molecular patterns(PAMPs)and danger-associated molecular patterns(DAMPs),thus triggering a series of inflammatory responses,promoting renal fibrosis,and finally causing renal impairment.In this review,we describe the proposed role of each type of PRRs in the development and progression of DN. 展开更多
关键词 Diabetic nephropathy Innate immunity pattern recognition receptor PATHOGENESIS
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汉坦病毒感染诱导的固有免疫研究进展
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作者 王平忠 杜虹 姜泓 《微生物学杂志》 CAS CSCD 北大核心 2024年第4期1-13,共13页
汉坦病毒(现称正汉坦病毒)是一类人畜共患病的分节段的单股负链RNA病毒。对于自然宿主动物,汉坦病毒呈持续无症状感染。当病毒由自然宿主传播给人时,引起两种临床综合征,即肾综合征出血热(HFRS)和汉坦病毒心肺综合征(HCPS)。迄今,它们... 汉坦病毒(现称正汉坦病毒)是一类人畜共患病的分节段的单股负链RNA病毒。对于自然宿主动物,汉坦病毒呈持续无症状感染。当病毒由自然宿主传播给人时,引起两种临床综合征,即肾综合征出血热(HFRS)和汉坦病毒心肺综合征(HCPS)。迄今,它们的发病机制尚未完全阐明,也无特效的治疗药物。汉坦病毒体外感染不引起明显的细胞病变,但患者却出现严重的血管渗漏,故认为免疫介导(包括适应性免疫和固有免疫)的病理反应可能是致病的主要原因。其中,固有免疫(也称天然免疫)是防御病原体感染的第一道防线,它由固有免疫细胞和固有免疫分子执行,前者如NK细胞、中性粒细胞等,后者如模式识别受体、干扰素和抗病毒蛋白等,它们在汉坦病毒免疫致病及抗感染等过程中发挥重要作用。此外,宿主固有免疫系统在抵抗病毒侵袭的同时,病毒也在逃避或妨碍免疫系统的功能,如干扰素产生减少或延迟、形成应激颗粒、诱导凋亡或自噬、破坏抗病毒信号转导等。因此,探讨汉坦病毒与宿主固有免疫系统之间的相互作用是汉坦病毒及其相关疾病领域研究的重要课题,这必将为阐明汉坦病毒的致病机制及研发特效治疗药物提供新的参考。 展开更多
关键词 汉坦病毒 固有免疫 中性粒细胞 自然杀伤细胞 模式识别受体 干扰素 自噬 凋亡
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机体识别病毒核酸的几种分子模式及途径 被引量:13
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作者 景志忠 何小兵 +3 位作者 房永祥 陈国华 曾爽 贾怀杰 《畜牧兽医学报》 CAS CSCD 北大核心 2011年第3期311-322,共12页
近些年机体病原相关模式受体及其识别分子机制的研究,极大地促进了先天性分子免疫学的发展,并成为现代免疫学研究的重点和热点领域。作者通过机体识别病毒核酸的Toll样受体(Toll-like receptors,TLRs)、RIG-I样受体(RIG-I like receptor... 近些年机体病原相关模式受体及其识别分子机制的研究,极大地促进了先天性分子免疫学的发展,并成为现代免疫学研究的重点和热点领域。作者通过机体识别病毒核酸的Toll样受体(Toll-like receptors,TLRs)、RIG-I样受体(RIG-I like receptors,RLRs)、NOD样受体(NOD-like receptors,NLRs)和DAI(DNA-dependent activatorof interferon-regulatory factors,DAI)等模式识别分子的细胞定位、分子结构及其识别病毒核酸途径的介绍,系统、全面地探讨了宿主机体如何全方位识别和消除入侵病毒的分子免疫防御途径,为抗病毒药物和疫苗的设计以及抗病育种提供了理论依据。 展开更多
关键词 病原相关分子模式 模式识别受体 病毒核酸 先天性免疫
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Toll样受体研究进展 被引量:17
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作者 王德成 佘敏 +4 位作者 佘锐萍 孙泉 王英华 李文贵 刘利强 《动物医学进展》 CSCD 2008年第2期56-60,共5页
免疫系统识别"非我"和"自我"的过程是依赖于不同的受体来完成的,作为先天性免疫系统的重要组成部分及连接获得性免疫与先天性免疫的"桥梁",Toll样受体(Toll-like receptors,TLRs)是生物的一种模式识别受... 免疫系统识别"非我"和"自我"的过程是依赖于不同的受体来完成的,作为先天性免疫系统的重要组成部分及连接获得性免疫与先天性免疫的"桥梁",Toll样受体(Toll-like receptors,TLRs)是生物的一种模式识别受体(pattern recognition receptor,PRR),它主要通过识别病原相关分子模式(pathogen-associated molecularpatterns,PAMPs)来启动免疫反应。已发现TLRs在炎症、细胞信号转导、细胞凋亡、肿瘤等发生过程中扮演重要角色。随着分子细胞生物学的发展,有关TLRs的研究必将更加深入,同时也会进一步拓展对机体免疫机制的认识。 展开更多
关键词 TOLL样受体 病原相关分子模式 模式识别受体
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几丁质触发植物免疫的研究现状与展望 被引量:3
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作者 田义 康国栋 +3 位作者 张彩霞 张利义 郝玉金 丛佩华 《中国农业科学》 CAS CSCD 北大核心 2013年第15期3115-3124,共10页
真菌病害是植物病害中最为严重的一种,世界上70%—80%的植物病害都是由真菌引起。几丁质是病原真菌细胞壁的重要组成成分,是一种典型的病原相关分子模式(pathogen-associated molecular pattern,PAMP)。当植物受到病原真菌入侵,位于细... 真菌病害是植物病害中最为严重的一种,世界上70%—80%的植物病害都是由真菌引起。几丁质是病原真菌细胞壁的重要组成成分,是一种典型的病原相关分子模式(pathogen-associated molecular pattern,PAMP)。当植物受到病原真菌入侵,位于细胞膜上的模式识别受体(pattern recognition receptor,PRR)能够直接与几丁质及其寡糖相互作用并触发植物的免疫反应。近几年,随着植物几丁质受体的成功鉴定,其与几丁质的相互作用机制以及几丁质触发植物免疫的分子机理被广泛研究,并取得了许多重要进展。为了较全面、系统地反应几丁质触发免疫研究的历史沿革、研究现状和发展趋势,笔者就植物对几丁质的识别机制、信号转导以及病原真菌对几丁质触发的免疫反应的抑制机制这3方面进行了综述,并对未来研究的发展方向进行了探讨。 展开更多
关键词 真菌病原菌 几丁质 病原相关分子模式 模式识别受体 抗病性
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仔猪外周血中内参基因的筛选及细胞因子和受体的表达水平 被引量:8
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作者 王继英 王彦平 +4 位作者 郭建凤 王怀中 林松 张印 武英 《中国农业科学》 CAS CSCD 北大核心 2015年第7期1437-1444,共8页
【目的】中国地方猪种在抗病性和免疫力方面优于国外猪种,但是对中外猪种抗病力差异的遗传基础和免疫机理却了解甚少。有推测不同品种猪对疾病的抵抗力不同可能在细胞因子和受体的表达水平上有所反映。本研究以抗病力强的大蒲莲和抗病... 【目的】中国地方猪种在抗病性和免疫力方面优于国外猪种,但是对中外猪种抗病力差异的遗传基础和免疫机理却了解甚少。有推测不同品种猪对疾病的抵抗力不同可能在细胞因子和受体的表达水平上有所反映。本研究以抗病力强的大蒲莲和抗病力相对较弱的长白猪的断奶仔猪为研究对象,对6个具有重要功能的细胞因子(促炎症细胞因子(IL8和TNFα),抗炎症细胞因子(IL10),干扰素调节因子(IRF3)和干扰素(IFNA和IFNG))和1个最具代表性的模式识别受体(TLR4)基因在大蒲莲和长白仔猪群体外周血液中的基因表达量进行检测,并对各基因进行品种和母猪效应分析,为了解中外不同猪种的免疫水平奠定基础。【方法】采集大蒲莲(104头)和长白(171头)35日龄仔猪的外周血,提取总RNA,逆转录为c DNA后,利用荧光定量PCR法,首先对6个常用的候选内参基因(ACTB、GAPDH、B2M、TBP、RPL4和PPIA)利用ge Norm软件进行稳定性评价分析,筛选仔猪外周血RNA基因定量分析中稳定表达的内参基因,然后利用该内参基因进行校正,对上述细胞因子和模式识别受体基因在大蒲莲和长白仔猪群体外周血中的表达量进行定量,并利用最小二乘法对细胞因子和受体在大蒲莲和长白仔猪群体中的表达量进行品种和母猪效应分析。【结果】研究结果归纳为4个方面:1.外周血样品中内参基因稳定性值M从大到小依次为:ACTB(0.595)>GAPDH(0.571)>PPIA(0.469)>RPL4(0.466)>TBP(0.461)>B2M(0.440),选择表达稳定性最高的基因B2M作为内参基因对细胞因子和受体基因的表达量进行校正。2.检测的6个细胞因子的基因表达量存在很大的差异,各细胞因子基因表达量ΔCt最大值和最小值之间差值分别为9.23—14.25和5.83—8.73;受体TLR4的ΔCt值的最大和最小值之间相差相对较小,大蒲莲和长白仔猪分别为5.03和3.82。3.大蒲莲和长白两品种间相比较,细胞因子在长白猪群体中的表达量平均值均高于大蒲莲群体,而受体TLR4的基因表达量在长白猪群体中的表达量低于大蒲莲群体;而且,大蒲莲群体内个体间细胞因子和受体表达量变异系数(平均31.43%)要大于长白群体(平均19.10%),这与大蒲莲选育程度低,群体内个体间的差异程度要大相一致。4.品种效应分析表明除IL10外,其他6个目的基因的ΔCt值品种间差异达显著(P<0.05)或极显著(P<0.01)水平。母猪效应分析表明母猪对各细胞因子和受体的影响均达到了极显著水平(P<0.01)。【结论】成功筛选了外周血基因表达分析中稳定表达的内参基因(B2M),对常规饲养管理下大蒲莲和长白仔猪外周血中的主要细胞因子和受体基因的表达进行群体水平分析。本研究结果为了解中外不同猪种的种质特性和抗病品种的选育提供了基础数据。 展开更多
关键词 细胞因子 模式识别受体 基因表达 大蒲莲 长白 仔猪
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NOD2和Toll样受体1在哮喘大鼠中的表达及布地奈德对其的影响 被引量:13
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作者 张志刚 叶斌 +5 位作者 童夏生 亢晓冬 叶辉 王恩智 陈豪 陈琪 《中国临床药理学与治疗学》 CAS CSCD 2011年第6期637-642,共6页
目的:观察核苷酸结合寡聚化结构域2(NOD2)和Toll样受体1(TLR1)在哮喘大鼠中的表达及布地奈德对其的影响,探讨模式识别受体在哮喘炎症过程中的可能作用机制。方法:采用大鼠哮喘模型,随机分成哮喘组、对照组和布地奈德组,免疫组织化学法... 目的:观察核苷酸结合寡聚化结构域2(NOD2)和Toll样受体1(TLR1)在哮喘大鼠中的表达及布地奈德对其的影响,探讨模式识别受体在哮喘炎症过程中的可能作用机制。方法:采用大鼠哮喘模型,随机分成哮喘组、对照组和布地奈德组,免疫组织化学法检测肺组织NOD2的表达,流式细胞术检测血中性粒细胞(NEU)TLR1的表达。结果:哮喘组(0.148±0.009,OD值)肺组织NOD2的光密度值显著低于对照组(0.157±0.006,OD值)(P<0.05);布地奈德组(0.149±0.008,OD值)肺组织NOD2的光密度值分别与哮喘组、对照组相比差异无统计学意义(均P>0.05)。哮喘组和布地奈德组(分别为74.07±6.26和78.54±4.65,OD值)NEU TLR1的平均荧光强度均显著性低于对照组(84.37±4.96,OD值)(分别为P<0.01、P<0.05);布地奈德组NEU TLR1的平均荧光强度与哮喘组相比差异无统计学意义(P>0.05)。TLR1与NOD2的表达水平呈显著正相关(n=2 6,r=0.780,P<0.01)。结论:哮喘大鼠NOD2和TLR1的表达水平下降,布地奈德可能对NOD2和TLR1的上调作用较弱,模式识别受体可能参与了哮喘的炎症过程。 展开更多
关键词 哮喘 核苷酸结合寡聚化结构域 TOLL样受体 模式识别受体 大鼠
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NLRP3炎症小体与真菌感染 被引量:5
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作者 徐志庆 吴大强 +2 位作者 邵菁 汪天明 汪长中 《中国真菌学杂志》 CSCD 2017年第3期162-167,共6页
在真菌感染时,宿主免疫细胞通过模式识别受体(PRR)识别β-葡聚糖等多种病原体相关分子模式(PAMP)引发抗真菌天然免疫。NLR家族中的NLRP3与ASC和caspase-1共同组成NLRP3炎症小体,参与或调控真菌感染。该文就近年来关于NLRP3炎症小体在真... 在真菌感染时,宿主免疫细胞通过模式识别受体(PRR)识别β-葡聚糖等多种病原体相关分子模式(PAMP)引发抗真菌天然免疫。NLR家族中的NLRP3与ASC和caspase-1共同组成NLRP3炎症小体,参与或调控真菌感染。该文就近年来关于NLRP3炎症小体在真菌感染中的作用作一综述。 展开更多
关键词 白念珠菌 NLRP3炎症小体 天然免疫 模式识别受体 病原体相关分子模式
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