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A brief review of microRNA and its role in PRRSV infection and replication

Xuekun GUO,Wenhai FENG

《农业科学与工程前沿（英文）》 2014年第1卷第2期页码 114-120 doi: 10.15302/J-FASE-2014022

摘要： Porcine reproductive and respiratory syndrome virus (PRRSV), a single-stranded RNA virus, mainly infects cells of monocyte/macrophage lineage. Recently, host microRNAs were shown to be capable of modulating PRRSV infection and replication by multiple ways such as targeting viral genomic RNA, targeting viral receptor and inducing antiviral response. MicroRNAs are small RNAs and have emerged as important regulators of virus-host cell interactions. In this review, we discuss the identified functions of host microRNAs in relation to PRRSV infection and propose that cellular microRNAs may have a substantial effect on cell or tissue tropism of PRRSV.

关键词： porcine reproductive and respiratory syndrome virus (PRRSV) microRNA antiviral viral tropism

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MicroRNA-148b promotes proliferation of hair follicle cells by targeting

Wanbao YANG,Qinqun LI,Bo SU,Mei YU

《农业科学与工程前沿（英文）》 2016年第3卷第1期页码 72-80 doi: 10.15302/J-FASE-2016089

摘要： MicroRNAs (miRNAs), small non-coding RNAs, are involved in many aspects of biological processes. Previous studies have indicated that miRNAs are important for hair follicle development and growth. In our study, we found by qRT-PCR that miR-148b was significantly upregulated in sheep wool follicle bulbs in anagen phase compared with the telogen phase of the hair follicle cycle. Overexpression of miR-148b promoted proliferation of both HHDPC and HHGMC. By using the TOPFlash system we demonstrated that miR-148b could activate Wnt/β-catenin pathway and , , and were consistently upregulated accordingly. Furthermore, transcript factor nuclear factor of activated T cells type 5 ( ) and were predicted to be the target of miR-148b and this was substantiated using a Dual-Luciferase reporter system. Subsequently was further identified as the target of miR-148b using western blotting. These results were considered to indicate that miR-148b could activate the Wnt/β-catenin signal pathway by targeting to promote the proliferation of human hair follicle cells.

关键词： miR-148b hair follicle proliferation NFAT5 Wnt10b

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MicroRNA-142-3p and microRNA-142-5p are downregulated in hepatocellular carcinoma and exhibit synergistic

null

《医学前沿（英文）》 2015年第9卷第3期页码 331-343 doi: 10.1007/s11684-015-0409-8

摘要：

MicroRNAs (miRNAs), an important class of small non-coding RNAs, regulate gene expression at the post-transcriptional level. miRNAs are involved in a wide range of biological processes and implicated in different diseases, including cancers. In this study, miRNA profiling and qRT-PCR validation revealed that miR-142-3p and miR-142-5p were significantly downregulated in hepatocellular carcinoma (HCC) and their expression levels decreased as the disease progressed. The ectopic expression of miR-142 significantly reduced HCC cell migration and invasion. Overexpression of either miR-142-3p or miR-142-5p suppressed HCC cell migration, and overexpression of both synergistically inhibited cell migration, which indicated that miR-142-3p and miR-142-5p may cooperatively regulate cell movement. miR-142-3p and miR-142-5p, which are mature miRNAs derived from the 3′- and 5′-strands of the precursor miR-142, target distinct pools of genes because of their different seed sequences. Pathway enrichment analysis showed a strong association of the putative gene targets of miR-142-3p and miR-142-5p with several cell motility-associated pathways, including those regulating actin cytoskeleton, adherens junctions, and focal adhesion. Importantly, a number of the putative gene targets were also significantly upregulated in human HCC cells. Moreover, overexpression of miR-142 significantly abrogated stress fiber formation in HCC cells and led to cell shrinkage. This study shows that mature miR-142 pairs collaboratively regulate different components of distinct signaling cascades and therefore affects the motility of HCC cells.

关键词： hepatocellular carcinoma microRNA metastasis cytoskeletal reorganization

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MicroRNAs and hepatitis viruses

Gang LI MD , Xiaojia XIONG MM ,

《医学前沿（英文）》 2009年第3卷第3期页码 265-270 doi: 10.1007/s11684-009-0055-0

摘要： MicroRNAs (miRNAs) are a class of small RNA molecules. They play a pivotal role in diverse domains such as infection, tumorigenesis, and immune reaction. As key regulators of most genes’ expression, they react at posttranscriptional level. It is increasingly clear that miRNAs are necessary for physiological and pathological processes. In the past few years, investigators gradually brought the concept of miRNA into studies of viral infection, including hepatitis viruses. The hepatitis B and C viruses are common causes of liver disease worldwide. It is very difficult to cure chronic hepatitis due to drug resistance during antivirus therapy. Elucidating the mechanisms of virus-host interactions in hepatitis B and C is very important in diagnosis, prognosis, and therapy. This article reviews the current knowledge of viral hepatitis (B and C type) at the level of miRNA and tries to outline areas of potential studies.

关键词： microRNA hepatitis B virus hepatitis C virus

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The role of microRNAs in adipocyte differentiation

null

《医学前沿（英文）》 2013年第7卷第2期页码 223-230 doi: 10.1007/s11684-013-0252-8

摘要：

Adipocytes differentiate from mesenchymal stem cells (MSCs) in a process known as adipogenesis. The programme of adipogenesis is regulated by the sequential activation of transcription factors and several signaling pathways. There is growing evidence indicating that a class of small non-coding single-stranded RNAs known as “microRNAs (miRNAs)” also are involved in this process. In this review, we summarize the biology and functional mechanisms of miRNAs in adipocyte differentiation. In addition, we further discuss the miRNAs profiling, the miRNAs function and miRNAs target prediction in the adipogenesis.

关键词： microRNA adipocyte differentiation adipogenesis

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The microRNA, miR-29c, participates in muscle development through targeting the

Weiya ZHANG,Wei WEI,Yuanyuan ZHAO,Shuhong ZHAO,Xinyun LI

《农业科学与工程前沿（英文）》 2015年第2卷第4期页码 311-317 doi: 10.15302/J-FASE-2015075

摘要： Previous studies indicated that miR-29c is important for muscle development in mice and human, but its role in pigs is unknown. In this study, we detected the expression of miR-29c in Meishan longissimus lumborum (LL) muscle. The results showed that miR-29c was gradually upregulated during development of skeletal muscle in pig. Moreover, the expression of and genes, which were confirmed to be targeted by miR-29c in mice, was decreased along with muscle development. Furthermore, the expression level of miR-29c was significantly higher in adult Meishan pigs than Large White pigs, while the expression of and genes was significantly lower in Meishan pigs. These results indicated that the expression pattern of miR-29c was opposite to that of and genes in pigs. Also, the luciferase assay indicated that miR-29s can target the gene in pigs. In addition, we identified a T to C mutation in the primary transcript of miR-29c, which was associated with the postmortem muscle pH in pigs. Based on these results, we concluded that miR-29c is also important in skeletal muscle development of pigs.

关键词： pig miR-29c skeletal muscle expression SNP

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Circulating microRNAs in cardiovascular diseases: from biomarkers to therapeutic targets

null

《医学前沿（英文）》 2014年第8卷第4期页码 404-418 doi: 10.1007/s11684-014-0379-2

摘要：

microRNAs (miRNAs) are a class of conserved, short, non-coding RNAs that have important and potent capacities to regulate gene expression at the posttranscriptional level. In the past several years, the aberrant expressions of miRNAs in the cardiovascular system have been widely reported, and the crucial roles of some special miRNAs in heart development and pathophysiology of various cardiovascular diseases have been gradually recognized. Recently, it was discovered that miRNAs are presented in peripheral circulation abundantly and stably. This has raised the possibility of using circulating miRNAs as biomarkers for diseases. Furthermore, some studies demonstrated that circulating miRNAs may serve as novel extracellular communicators of cell-cell communication. These discoveries not only reveal the functions of circulating miRNAs in cardiovascular system but also inform the development of miRNAs therapeutic strategies. In this review, we discuss the potential roles of circulating miRNAs in a variety of cardiovascular diseases from biomarkers to therapeutic targets to clearly understand the roles of circulating miRNAs in cardiovascular system.

关键词： microRNA cardiovascular disease biomarkers therapeutic target

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U-shaped microRNA expression pattern could be a new concept biomarker for environmental estrogen

Rui Duan, Yun Lu, Lingyan Hou, Lina Du, Lequn Sun, Xingfan Tang

《环境科学与工程前沿（英文）》 2016年第10卷第6期 doi: 10.1007/s11783-016-0880-8

摘要： Estrogen regulates miRNA expression in a typical U-shaped dose-response pattern. E2 can regulate in the ventral prostate. Mouse ventral prostate is most sensitive to estrogen. Nonmonotonic dose-response in prostate could be a component of estrogen signature. Many studies have focused on environmental estrogen-related diseases. However, no consistent gene markers or signatures for estrogenicity have been discovered in mammals. This study investigated the estrogenic effects of 17β-estradiol on the prostate in immature male mice. Consistent U-shaped responses were seen in bodyweight, ventral prostate epithelial morphology, and miRNA expression levels. Specifically, most estradiol regulated miRNAs were downregulated at low doses of estradiol (0.2 and 2 mg·kg ), and whose expression returned to the control level at a larger dose (200 mg·kg ). The function of these regulated miRNAs is related to the prostate cancer and PI3K-Akt signaling pathways, which is consistent with the function of estradiol. Furthermore, the miRNA-processing machinery, Drosha, in the prostate was also regulated in a similar pattern, which could be a part of the U-shaped miRNA expression mechanism. All of these data indicate that the prostate is a reliable organ for evaluating estrogenic activity and that the typical nonmonotonic dose-response relationship could be used as a novel biomarker for estrogenicity.

关键词： miRNA Prostate Estradiol Nonmonotonic dose-response Estrogenicity Drosha

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MicroRNAs and lung cancers: from pathogenesis to clinical implications

null

《医学前沿（英文）》 2012年第6卷第2期页码 134-155 doi: 10.1007/s11684-012-0188-4

摘要：

Lung cancer is the leading cause of cancer-related deaths in the US and worldwide. Better understanding of the disease is warranted for improvement in clinical management. Here we summarize the functions of small-RNA-based, posttranscriptional gene regulators, i.e. microRNAs, in the pathogenesis of lung cancers. We discuss the microRNAs that play oncogenic as well as tumor suppressive roles. We also touch on the value of microRNAs as markers for diagnosis, prognosis and the promising field of microRNA-based novel therapies for lung cancers.

关键词： lung biology lung cancer microRNA

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Caveolin proteins: a molecular insight into disease

null

《医学前沿（英文）》 2016年第10卷第4期页码 397-404 doi: 10.1007/s11684-016-0483-6

摘要：

Caveolae are a kind of specific cystic structures of lipid rafts in the cytoplasmic membrane and are rich in cholesterol and sphingolipids. In recent years, many researchers have found that both caveolins and caveolae play a role in the development of various human diseases, including coronary heart disease, hypertension, and nervous system disorders. The specific mechanisms by which caveolins induce diseases have been a topic of interest. However, a number of detailed molecular mechanisms remain poorly understood. This article focuses on the relationship between caveolin proteins and human diseases and reviews the molecular mechanisms of caveolins in disease networks.

关键词： caveolin caveolae microRNA disease signaling pathway heart tumor

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Cold stress responsive microRNAs and their targets in

Jingyi WANG,Juhua LIU,Caihong JIA,Hongxia MIAO,Jianbin ZHANG,Zhuo WANG,Biyu XU,Zhiqiang JIN

《农业科学与工程前沿（英文）》 2016年第3卷第4期页码 335-345 doi: 10.15302/J-FASE-2016121

摘要： Cold stress is an environmental factor affecting plant development and production. Recently, microRNAs (miRNAs) have been found to be involved in several plant processes such as growth regulation and stress responses. Although miRNAs and their targets have been identified in several banana species, their participation during cold accumulation in banana remains unknown. In this study, two small RNA libraries were generated from micropropagated plantlets of grown at normal and low temperature (5°C). A total of 69 known miRNAs and 32 putative novel miRNAs were detected in the libraries by Solexa sequencing. Sixty-four cold-inducible miRNAs were identified through differentially expressed miRNAs analysis. Among 43 miRNAs belonging to 26 conserved miRNA families with altered expression, 18 were upregulated and 25 downregulated under cold stress. Of 21 putative novel miRNAs with altered expression, four were downregulated and 17 upregulated. Furthermore, eight miRNAs were validated by stem-loop qRT-PCR and their dynamic differential expression was analyzed. In addition, 393 target genes of 58 identified cold-responsive miRNAs were predicted and categorized by function. These results provide important information for further characterization and functional analysis of cold-responsive miRNAs in banana.

关键词： cold stress microRNA Musa balbisiana

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Long noncoding RNA LOC646029 functions as a ceRNA to suppress ovarian cancer progression through the miR-627-3p/SPRED1 axis

《医学前沿（英文）》页码 924-938 doi: 10.1007/s11684-023-1004-z

摘要： Long noncoding RNAs (lncRNAs) play a crucial regulatory role in the development and progression of multiple cancers. However, the potential mechanism by which lncRNAs affect the recurrence and metastasis of ovarian cancer remains unclear. In the current study, the lncRNA LOC646029 was markedly downregulated in metastatic ovarian tumors compared with primary tumors. Gain- and loss-of-function assays demonstrated that LOC646029 inhibits the proliferation, invasiveness, and metastasis of ovarian cancer cells in vivo and in vitro. Moreover, the downregulation of LOC646029 in metastatic ovarian tumors was strongly correlated with poor prognosis. Mechanistically, LOC646029 served as a miR-627-3p sponge to promote the expression of Sprouty-related EVH1 domain-containing protein 1, which is necessary for suppressing tumor metastasis and inhibiting KRAS signaling. Collectively, our results demonstrated that LOC646029 is involved in the progression and metastasis of ovarian cancer, which may be a potential prognostic biomarker.

关键词： ovarian cancer lncRNA LOC646029 metastasis microRNA 627-3p SPRED1

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MiRNA-451 is a potential biomarker for estrogenicity in mouse uterus

Lingyan HOU, Yun LU, Ying LI, Li LI

《环境科学与工程前沿（英文）》 2014年第8卷第1期页码 99-105 doi: 10.1007/s11783-013-0490-7

摘要： The uterotrophic assay has been commonly used to test environmental estrogens in vivo, however, it is often not sensitive enough sometimes. An alternative way is to evaluate estrogenicity through biomarker genes. MicroRNA (miRNA) is a class of regulatory gene, which has been shown to be a good biomarker for many diseases and toxicological effects in recent years, and some evidences showed that estrogen induced response was partially mediated by miRNAs. In this study, two types of microarrays were used to test the 17β-estradiol (E2) induced miRNA expression profile at different time points in the immature mouse uterus. Statistical analysis showed the aldehyde slide based array had less variation than the amino slide based array, and 11 dysregulated miRNAs were screened out for significant fold change. Real-time PCR was performed to further confirm that 4 out of 7 selected miRNAs, namely miR-451, miR-155, miR-335-5p, and miR-365, are E2 regulated miRNAs in the uterus. The function of the predicted targets of these miRNAs is involved in cell grow control, which is consistent with the main E2 function in the uterus. MiR-451 had similar strong responses to E2 in the uterus of both immature and overiectomized mice, and could be a potential biomarker for estrogenicity in the uterus.

关键词： estrogen microRNA (miRNA) microarray biomarker

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非编码RNA及其在组织工程中的潜在应用

李石营, 钱天梅, 王星辉, 刘杰, 顾晓松

《工程（英文）》 2017年第3卷第1期页码 3-15 doi: 10.1016/J.ENG.2017.01.005

摘要：

组织工程是医学科学中一个相对较新但发展迅速的领域。非编码RNA(ncRNA) 是不编码蛋白质的功能性RNA 分子，它们可以调节细胞的行为、改变组织的生物学环境。虽然以对ncRNA 作为治疗靶点尚未进入临床实践，但ncRNA 在组织工程中的应用已经吸引了越来越多的关注，而且对ncRNA 的调节作用和释放方法的深入探讨可以促进其在组织工程中的应用。本文简要介绍了ncRNA 在神经、皮肤、肝脏、血管和肌肉的调控作用和可能的释放方法及其潜在的治疗应用价值。

关键词：组织工程非编码RNA(ncRNA) microRNA(miRNA) 神经皮肤肝脏血管系统肌肉

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Identification of differentially expressed miRNAs associated with chronic kidney disease–mineral bone disorder

null

《医学前沿（英文）》 2017年第11卷第3期页码 378-385 doi: 10.1007/s11684-017-0541-8

摘要：

The purpose of this study is to characterize a meta-signature of differentially expressed mRNA in chronic kidney disease (CKD) to predict putative microRNA (miRNA) in CKD–mineral bone disorder (CKD–MBD) and confirm the changes in these genes and miRNA expression under uremic conditions by using a cell culture system. PubMed searches using MeSH terms and keywords related to CKD, uremia, and mRNA arrays were conducted. Through a computational analysis, a meta-signature that characterizes the significant intersection of differentially expressed mRNA and expected miRNAs associated with CKD–MBD was determined. Additionally, changes in gene and miRNA expressions under uremic conditions were confirmed with human Saos-2 osteoblast-like cells. A statistically significant mRNA meta-signature of upregulated and downregulated mRNA levels was identified. Furthermore, miRNA expression profiles were inferred, and computational analyses were performed with the imputed microRNA regulation based on weighted ranked expression and putative microRNA targets (IMRE) method to identify miRNAs associated with CKD occurrence. TLR4 and miR-146b levels were significantly associated with CKD–MBD. TLR4 levels were significantly downregulated, whereas pri-miR-146b and miR-146b were upregulated in the presence of uremic toxins in human Saos-2 osteoblast-like cells. Differentially expressed miRNAs associated with CKD-MBD were identified through a computational analysis, and changes in gene and miRNA expressions were confirmed with an in vitro cell culture system.

关键词： chronic kidney disease microRNA mineral bone disorder uremia