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Articles by Jideng Ma
Total Records ( 4 ) for Jideng Ma
  Lu Bai , Jideng Ma , Yue Wang , Zhengjian Zhao , Xuewei Li , Anan Jiang and Lin Bai
  Blood plays an important role in many biological processes and circulating microRNAs (miRNAs) in the blood have been reported to be biomarkers for various physiological and pathological states. However, few studies have examined porcine blood miRNAs, especially arterial blood miRNAs. Here, researchers sequenced the microRNAomes of porcine arterial and venous blood samples in which we identified 277 and 294 known porcine miRNAs, respectively. In both blood samples, highly expressed miRNAs were implicated in erythropoiesis and angiogenesis. A total of 57 miRNAs showed significantly different expression levels (p<0.01) between arterial and venous blood of which seven were enriched in arterial blood and five were enriched in venous blood by more than a 1.5 fold change. Interestingly, functional enrichment analysis of the genes predicted to be targeted by the enriched miRNAs indicated that arterial blood was mainly associated with the immune response and venous blood was primarily associated with apoptosis and the hypoxia response. The results suggest that the 12 miRNAs with differential expression should be considered as biomarkers for physiological differences between arterial and venous blood and that they may help promote the further molecular diagnosis of blood.
  Ya Tan , Jideng Ma , Yingkai Liu , Keren Long , Liujun He , Xuewei Li and Li Zhu
  MicroRNAs (miRNAs) are non-coding RNAs that negatively regulate gene expression. Compelling evidences have demonstrated the important roles of miRNAs in muscle proliferation, differentiation and development processes. Cardiac muscle and skeletal muscle (longissimus dorsi muscle and psoas major muscle) are both striated muscles which perform different functions in vivo. However, little is known about the differences of miRNA expression pattern between these distinct muscles. In this study, researchers applied a deep sequencing approach to identify the miRNA transcriptomes between cardiac and skeletal muscles. Three sequencing libraries were constructed from three 210 days old pigs, a total of 56 M raw data was generated with 95.58% of them were mappable sequences. In total, 321 unique miRNAs were identified in three sequencing libraries of which 109 were differentially expressed. Ranking analysis showed that six out of the ten most highly expressed miRNAs in cardiac muscle were up-regulated compared with longissimus dorsi muscle and psoas major muscle. GO and KEGG pathway analyses for the predicted target genes of the six up-regulated miRNAs showed that the miRNAs highly expressed in CM are mainly involved in insulin and calcium signaling pathways and the constructed miRNA-mRNA interaction networks highlighted the important differences between cardiac and skeletal muscles, all these results may promote the researches on muscle-related diseases in a certain degree.
  Yihui Liu , Jideng Ma , Li Chen , Pengbo Lou , Jun Zhou , Mingzhou Li and Xuewei Li
  High-throughput sequencing of two small RNA libraries derived from immature (20 days old) and mature (210 day old) porcine testis samples yielded over 20 million high-quality reads. Researchers detected 461 mature microRNAs (miRNAs) encoded by 277 precursor (pre)-miRNAs of which 428 were unique. In total, 303 unique miRNAs of (428, 70.79%) were differentially expressed between immature and mature porcine testes. Compared with immature testis, 95 unique miRNAs were up-regulated and 208 unique miRNAs were down-regulated in mature testis. Strikingly, researchers found that most miRNAs and differentially expressed miRNAs were preferentially located on the X chromosome which implied their crucial roles in the sex-determination system. Furthermore, GO and KEGG analyses of the target genes that were predicted from the highly abundant differentially expressed miRNAs between mature and immature porcine testes illustrate the likely roles for these miRNAs in spermatogenesis. The study indicates that miRNAs are extensively involved in spermatogenesis and that unraveling miRNA functions in the testis will further the understanding of regulatory mechanisms of mammalian spermatogenesis and male infertility treatment.
  Jian Xiao , Jideng Ma , Long Jin , Xuewei Li , Mingzhou Li and An-An Jiang
  The liver is a vital organ that plays a major role in metabolism and other functions in the body. In this study, researchers used microarray analyses to investigate the gene expression profile during the development of the liver in pigs (Suss crofa). Researchers identified various differentially expressed genes in the liver between the prenatal and postnatal stages. The upregulated genes in the prenatal liver were related to the cell cycle and developmental process. The genes that were upregulated in the postnatal liver were active in the immunological process. The study presented gene expression profiles of the porcine liver during the pre and post-natal stages which contribute to the understanding porcine liver development.
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