Objective:To explore the related mechanism of miR-34a affecting epilepsy.Methods:MicroRNA microarray chip and RT-PCR were used to analyze the expression of miR-34a in epileptic rats,and observe the relationship betwee...Objective:To explore the related mechanism of miR-34a affecting epilepsy.Methods:MicroRNA microarray chip and RT-PCR were used to analyze the expression of miR-34a in epileptic rats,and observe the relationship between miR-34a and seizure frequency and EEG.Predicted the target gene of miR-34a,used The dual-luciferase reporter gene assay was used to observe its binding to the target gene of miR-34a,the effect of overexpression and inhibition of miR-34a on the target gene,the effects of overexpression and inhibition of target genes on downstream factors.Results:Microarray chip and RT-PCR detection showed that miR-34a was highly expressed in epilepsy(P<0.05),and miR-34a was positively correlated with seizure frequency(R=0.783,P=0.003),and inhibition of miR-34a inhibited the seizure frequency of epilepsy(P<0.05).The online databases TargetScan and miRDB show that miR-34a and BCL-2 have a predicted binding region,and the dual-luciferase reporter gene experiment proves that the two have a binding relationship.When miR-34a was overexpressed,BCL-2 expression was down-regulated,and conversely,when miR-34a was inhibited,BCL-2 expression was up-regulated.NLRP1 and downstream related factors Caspase-3,Caspase-1,IL-1βand IL-18 were highly expressed in the brain tissue of epileptic rats(P<0.05).When BCL-2 was inhibited,the expression levels of NLRP1 and downstream related factors were increased,and when BCL-2 was inhibited,the result was the opposite.Conclusion:The highly expressed miR-34a promotes epilepsy by inhibiting BCL-2 and activating the NLRP1 inflammasome.展开更多
炎性复合体是存在于胞浆中的一组多蛋白复合体,它能够活化胱天蛋白酶(caspase)-1,后者介导IL(interleukin)-1β、IL-18和IL-33等促炎因子的成熟与释放。NALP1(NACHT leucine-rich-repeat protein 1)也称NLRP1,是最早被鉴定出来的具有明...炎性复合体是存在于胞浆中的一组多蛋白复合体,它能够活化胱天蛋白酶(caspase)-1,后者介导IL(interleukin)-1β、IL-18和IL-33等促炎因子的成熟与释放。NALP1(NACHT leucine-rich-repeat protein 1)也称NLRP1,是最早被鉴定出来的具有明确配体的炎性复合体之一,它参与多种炎症反应和细胞凋亡的调节作用。此外,还有研究发现NLRP1在急性白血病的发生发展及诱导骨髓造血干细胞凋亡等血液系统疾病中也发挥着重要作用。本文将对NLRP1的结构、活化机制、调控及在造血系统中的作用进行综述。展开更多
Objective:To investigate the role of NLRP3 and NLRP1 inflammasomes signaling pathways in rheumatoid arthritis(RA).Methods:A total of 36 patients with RA were selected,peripheral blood mononuclear cell(PBMC)and granulo...Objective:To investigate the role of NLRP3 and NLRP1 inflammasomes signaling pathways in rheumatoid arthritis(RA).Methods:A total of 36 patients with RA were selected,peripheral blood mononuclear cell(PBMC)and granulocyte were separated from venous blood.RT-qPCR method was used to detect the expression level and diversity of NLRP3 and NLRP1 in PBMC and granulocyte mRNA in patieuts with RA.and detect the mRNA expression of downstream factor IL-1β.The correlation between RA and the expression of NLRP3 aud NLRP1 was analyzed.Normal 30 cases were set as control group.Results:Expression levels of NLRP1.and caspase-1mRNA in PBMC of RA group were significautly lower than those of control group(P<0.05).while there was no significant differeuee in expression levels of NLRP3,ASC.IL-1βmRNA between these two groups(P>0.05);NLRP3,caspase-1,and ASC mRNA expression in granulocyte of RA patients were significantly lower than those in control group(P<0.05).There was no currelation between rheumatoid factor and expression levels of NLRP3.ASC.caspase-1 mRNA in RA group(P>0.05);NLRP1,IL-1βmRNA expression level had a negative corrlation with anti-rheunatoid factor antibody(P=0.0332,0.0340).Conclusions:NLRP3 and NLRP1 inflammasomes signaling pathways are involved in RA inflammatory reaction process as protective factors,and play an important role in RA inflammatory mechanisms.展开更多
炎症小体是由多种蛋白质构成的复合体,是天然免疫系统的主要组成部分。炎性小体的形成能激活半胱天冬氨酸酶-1(Caspase-1),进而引起细胞因子前体pro-IL-1β和pro-IL-18成熟和分泌并诱导细胞焦亡。NOD样受体蛋白1(nod like receptor prot...炎症小体是由多种蛋白质构成的复合体,是天然免疫系统的主要组成部分。炎性小体的形成能激活半胱天冬氨酸酶-1(Caspase-1),进而引起细胞因子前体pro-IL-1β和pro-IL-18成熟和分泌并诱导细胞焦亡。NOD样受体蛋白1(nod like receptor protein 1,NLRP1)炎症小体由、接头蛋白ASC(apoptosis-associated speck-like protein containing a CARD,ASC)和效应蛋白Caspase-1构成,其激活失调与肿瘤发病机制有关,但目前在肿瘤发生和发展中的作用仍然存争议。本文就NLRP1炎症小体与肿瘤的研究进展作一综述。展开更多
基金Guangxi Natural Science Foundation(No.2020GXNSFAA238007)Guangxi High-level Innovation Team and Outstanding Scholars Program[Guangxi Higher Education Talents(2020)No.6]+2 种基金Academic Team Building Project of the First Affiliated Hospital of Guangxi TCM University(NO:Courtyard Word[2018]No.146)Guangxi Clinical Research Center of Traditional Chinese Medicine encephalopathy(NO.AD20238028)Guangxi Traditional Chinese Medicine Key Discipline Construction Project(No.GZXK-Z-20-13)。
文摘Objective:To explore the related mechanism of miR-34a affecting epilepsy.Methods:MicroRNA microarray chip and RT-PCR were used to analyze the expression of miR-34a in epileptic rats,and observe the relationship between miR-34a and seizure frequency and EEG.Predicted the target gene of miR-34a,used The dual-luciferase reporter gene assay was used to observe its binding to the target gene of miR-34a,the effect of overexpression and inhibition of miR-34a on the target gene,the effects of overexpression and inhibition of target genes on downstream factors.Results:Microarray chip and RT-PCR detection showed that miR-34a was highly expressed in epilepsy(P<0.05),and miR-34a was positively correlated with seizure frequency(R=0.783,P=0.003),and inhibition of miR-34a inhibited the seizure frequency of epilepsy(P<0.05).The online databases TargetScan and miRDB show that miR-34a and BCL-2 have a predicted binding region,and the dual-luciferase reporter gene experiment proves that the two have a binding relationship.When miR-34a was overexpressed,BCL-2 expression was down-regulated,and conversely,when miR-34a was inhibited,BCL-2 expression was up-regulated.NLRP1 and downstream related factors Caspase-3,Caspase-1,IL-1βand IL-18 were highly expressed in the brain tissue of epileptic rats(P<0.05).When BCL-2 was inhibited,the expression levels of NLRP1 and downstream related factors were increased,and when BCL-2 was inhibited,the result was the opposite.Conclusion:The highly expressed miR-34a promotes epilepsy by inhibiting BCL-2 and activating the NLRP1 inflammasome.
文摘炎性复合体是存在于胞浆中的一组多蛋白复合体,它能够活化胱天蛋白酶(caspase)-1,后者介导IL(interleukin)-1β、IL-18和IL-33等促炎因子的成熟与释放。NALP1(NACHT leucine-rich-repeat protein 1)也称NLRP1,是最早被鉴定出来的具有明确配体的炎性复合体之一,它参与多种炎症反应和细胞凋亡的调节作用。此外,还有研究发现NLRP1在急性白血病的发生发展及诱导骨髓造血干细胞凋亡等血液系统疾病中也发挥着重要作用。本文将对NLRP1的结构、活化机制、调控及在造血系统中的作用进行综述。
基金supported by National Natural Science Fund of China(31300156)
文摘Objective:To investigate the role of NLRP3 and NLRP1 inflammasomes signaling pathways in rheumatoid arthritis(RA).Methods:A total of 36 patients with RA were selected,peripheral blood mononuclear cell(PBMC)and granulocyte were separated from venous blood.RT-qPCR method was used to detect the expression level and diversity of NLRP3 and NLRP1 in PBMC and granulocyte mRNA in patieuts with RA.and detect the mRNA expression of downstream factor IL-1β.The correlation between RA and the expression of NLRP3 aud NLRP1 was analyzed.Normal 30 cases were set as control group.Results:Expression levels of NLRP1.and caspase-1mRNA in PBMC of RA group were significautly lower than those of control group(P<0.05).while there was no significant differeuee in expression levels of NLRP3,ASC.IL-1βmRNA between these two groups(P>0.05);NLRP3,caspase-1,and ASC mRNA expression in granulocyte of RA patients were significantly lower than those in control group(P<0.05).There was no currelation between rheumatoid factor and expression levels of NLRP3.ASC.caspase-1 mRNA in RA group(P>0.05);NLRP1,IL-1βmRNA expression level had a negative corrlation with anti-rheunatoid factor antibody(P=0.0332,0.0340).Conclusions:NLRP3 and NLRP1 inflammasomes signaling pathways are involved in RA inflammatory reaction process as protective factors,and play an important role in RA inflammatory mechanisms.
文摘炎症小体是由多种蛋白质构成的复合体,是天然免疫系统的主要组成部分。炎性小体的形成能激活半胱天冬氨酸酶-1(Caspase-1),进而引起细胞因子前体pro-IL-1β和pro-IL-18成熟和分泌并诱导细胞焦亡。NOD样受体蛋白1(nod like receptor protein 1,NLRP1)炎症小体由、接头蛋白ASC(apoptosis-associated speck-like protein containing a CARD,ASC)和效应蛋白Caspase-1构成,其激活失调与肿瘤发病机制有关,但目前在肿瘤发生和发展中的作用仍然存争议。本文就NLRP1炎症小体与肿瘤的研究进展作一综述。
