Microvesicles （MVs） are the heterogeneous mixtures of vesicles. MVs released by leukemia cells constitute an important part of the leukemia microenvironment. MVs might act as important reser- voirs of microRNAs （mi...Microvesicles （MVs） are the heterogeneous mixtures of vesicles. MVs released by leukemia cells constitute an important part of the leukemia microenvironment. MVs might act as important reser- voirs of microRNAs （miRNAs）. It is worth evaluating whether MVs possess some unique miRNA con- tents that are valuable in understanding the pathogenesis. In this study, we investigated the miRNA ex- pression patterns of Nalm-6-derived MVs, Jurkat-derived MVs and normal cell-derived MVs using miRNA microarrays. The potential target genes regulated by differentially expressed miRNAs were also predicted and analyzed. Results demonstrated that 182 miRNAs and 166 miRNAs were differentially expressed in Nalm-6-MVs and Jurkat-MVs, respectively. Many oncogenes, tumor suppressors and sig- nal pathway genes were targeted by these aberrantly expressed miRNAs, which might contribute to the development of B-ALL or T-ALL. Our findings expanded the potential diagnostic markers of ALL and provided useful information for ALL pathogenesis.展开更多
To determine the molecular mechanism of cerebral ischemia/reperfusion injury, we examined the micro RNA（mi RNA） expression profile in rat cortex after focal cerebral ischemia/reperfusion injury using mi RNA microarr...To determine the molecular mechanism of cerebral ischemia/reperfusion injury, we examined the micro RNA（mi RNA） expression profile in rat cortex after focal cerebral ischemia/reperfusion injury using mi RNA microarrays and bioinformatic tools to systematically analyze Gene Ontology（GO） function classifications, as well as the signaling pathways of genes targeted by these differentially expressed mi RNAs. Our results show significantly changed mi RNA expression profiles in the reperfusion period after focal cerebral ischemia, with a total of 15 mi RNAs up-regulated and 44 mi RNAs down-regulated. Target genes of these differentially expressed mi RNAs were mainly involved in metabolic and cellular processes, which were identified as hub nodes of a mi RNA-GO-network. The most correlated pathways included D-glutamine and D-glutamate metabolism, the renin-angiotensin system, peroxisomes, the PPAR signaling pathway, SNARE interactions in vesicular transport, and the calcium signaling pathway. Our study suggests that mi RNAs play an important role in the pathological process of cerebral ischemia/reperfusion injury. Understanding mi RNA expression and function may shed light on the molecular mechanism of cerebral ischemia/reperfusion injury.展开更多
OBJECTIVE:To observe the effect of herb-partitioned moxibustion(HPM)on the miRNA expression profile of thyroid tissue in experimental autoimmune thyroiditis(EAT)rats.METHODS:Rats were randomly divided into normal cont...OBJECTIVE:To observe the effect of herb-partitioned moxibustion(HPM)on the miRNA expression profile of thyroid tissue in experimental autoimmune thyroiditis(EAT)rats.METHODS:Rats were randomly divided into normal control(NC)group,EAT model(EAT)group,HPM group and western medicine(Med)group.EAT model rats were prepared by a combined immunization with complete and incomplete Freund’s adjuvant emulsified with porcine thyroglobulin and iodine.Rats in the HPM group were treated with HPM,while rats in the Med group were treated with levothyrocine(1μg/2 m L)by gavage.HE staining was used to observe the pathological morphological changes of thyroid tissue,ELISAs was uaed to detect the serum concentrations of TGAb,TPOAb,FT3,FT4,TSH.We then performed high-throughput mi RNA sequencing to analyse the mi RNA expression profiles in the thyroid tissues,followed by a bioinformatics analysis.RT-q PCR was used to verify the identified differentially expressed mi RNAs.RESULTS:HPM improved the thyroid tissue morphology and reduced serum TPOAb,TGAb,TSH concentration in EAT rats(P<0.05),but with no obvious effect on FT3 and FT4 concentration.While the TSH,FT3 and FT4 concentration was significantly changed in the Med group(P<0.01 or P<0.05)compared with that of EAT group.Sequencing results showed that a total of 17 mi RNAs were upregulated,and 4 were downregulated in the EAT rats,in which the expression levels of mi R-346 and mi R-331-5 p were reversed by HPM.The target genes of the mi RNAs that regulated by HPM wereassociated with a variety of immune factors and immune signals.RT-q PCR verification showed that the expression of mi RNA-346 and mi RNA-331-5 p was consistent with the sequencing results.CONCLUSIONS:HPM could regulate the the expression of mi RNA-346 and mi RNA-331-5 p,then act on their target genes to immune and inflammation-related pathways,which may be one of the mechanisms of HPM on EAT rats.展开更多
基金supported by the National Natural Science Foundation of China(No.81170462)
文摘Microvesicles （MVs） are the heterogeneous mixtures of vesicles. MVs released by leukemia cells constitute an important part of the leukemia microenvironment. MVs might act as important reser- voirs of microRNAs （miRNAs）. It is worth evaluating whether MVs possess some unique miRNA con- tents that are valuable in understanding the pathogenesis. In this study, we investigated the miRNA ex- pression patterns of Nalm-6-derived MVs, Jurkat-derived MVs and normal cell-derived MVs using miRNA microarrays. The potential target genes regulated by differentially expressed miRNAs were also predicted and analyzed. Results demonstrated that 182 miRNAs and 166 miRNAs were differentially expressed in Nalm-6-MVs and Jurkat-MVs, respectively. Many oncogenes, tumor suppressors and sig- nal pathway genes were targeted by these aberrantly expressed miRNAs, which might contribute to the development of B-ALL or T-ALL. Our findings expanded the potential diagnostic markers of ALL and provided useful information for ALL pathogenesis.
基金supported by grants from the National Natural Science Foundation of ChinaNo.81271358+1 种基金Yunnan Science Foundation of ChinaNo.2013FZ199
文摘To determine the molecular mechanism of cerebral ischemia/reperfusion injury, we examined the micro RNA（mi RNA） expression profile in rat cortex after focal cerebral ischemia/reperfusion injury using mi RNA microarrays and bioinformatic tools to systematically analyze Gene Ontology（GO） function classifications, as well as the signaling pathways of genes targeted by these differentially expressed mi RNAs. Our results show significantly changed mi RNA expression profiles in the reperfusion period after focal cerebral ischemia, with a total of 15 mi RNAs up-regulated and 44 mi RNAs down-regulated. Target genes of these differentially expressed mi RNAs were mainly involved in metabolic and cellular processes, which were identified as hub nodes of a mi RNA-GO-network. The most correlated pathways included D-glutamine and D-glutamate metabolism, the renin-angiotensin system, peroxisomes, the PPAR signaling pathway, SNARE interactions in vesicular transport, and the calcium signaling pathway. Our study suggests that mi RNAs play an important role in the pathological process of cerebral ischemia/reperfusion injury. Understanding mi RNA expression and function may shed light on the molecular mechanism of cerebral ischemia/reperfusion injury.
基金Supported by the National Natural Science Foundation of China(81704176,82074551)Three-year Action Plan Project of Shanghai Traditional Chinese Medicine Development(ZY(2018-2020)-CCCX-2004-01)+1 种基金the National Program on Key Basic Research Project(973 program)(2009CB522900,2015CB554501)Shanghai Municipal Health Commission Project(20194Y0013)。
文摘OBJECTIVE:To observe the effect of herb-partitioned moxibustion(HPM)on the miRNA expression profile of thyroid tissue in experimental autoimmune thyroiditis(EAT)rats.METHODS:Rats were randomly divided into normal control(NC)group,EAT model(EAT)group,HPM group and western medicine(Med)group.EAT model rats were prepared by a combined immunization with complete and incomplete Freund’s adjuvant emulsified with porcine thyroglobulin and iodine.Rats in the HPM group were treated with HPM,while rats in the Med group were treated with levothyrocine(1μg/2 m L)by gavage.HE staining was used to observe the pathological morphological changes of thyroid tissue,ELISAs was uaed to detect the serum concentrations of TGAb,TPOAb,FT3,FT4,TSH.We then performed high-throughput mi RNA sequencing to analyse the mi RNA expression profiles in the thyroid tissues,followed by a bioinformatics analysis.RT-q PCR was used to verify the identified differentially expressed mi RNAs.RESULTS:HPM improved the thyroid tissue morphology and reduced serum TPOAb,TGAb,TSH concentration in EAT rats(P<0.05),but with no obvious effect on FT3 and FT4 concentration.While the TSH,FT3 and FT4 concentration was significantly changed in the Med group(P<0.01 or P<0.05)compared with that of EAT group.Sequencing results showed that a total of 17 mi RNAs were upregulated,and 4 were downregulated in the EAT rats,in which the expression levels of mi R-346 and mi R-331-5 p were reversed by HPM.The target genes of the mi RNAs that regulated by HPM wereassociated with a variety of immune factors and immune signals.RT-q PCR verification showed that the expression of mi RNA-346 and mi RNA-331-5 p was consistent with the sequencing results.CONCLUSIONS:HPM could regulate the the expression of mi RNA-346 and mi RNA-331-5 p,then act on their target genes to immune and inflammation-related pathways,which may be one of the mechanisms of HPM on EAT rats.
