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Articles by Jun Zhou
Total Records ( 5 ) for Jun Zhou
  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.
  Haozhu Chen , Yunqin Chen , Xuejuan Jin , Xiaojin Zhang , Jun Zhou , Bin Chen , Baishen Pan , Aijun Sun , Yunzeng Zou and Junbo Ge


Dyslipidemia is considered one of the most important risk factors for coronary heart disease.


This study was designed to analyze the blood lipid levels of different age inhabitants in urban Shanghai in the 2000s and compare the results with those in the 1970s (1385 subjects), 1980s (3302 and 2399 subjects), and 1990s (3647 subjects).


Blood samples were collected from 2197 persons, as well as 200 newborns. The levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were measured.


The TG level in adults >20 years of age was remarkably greater than those in the 1990s, but the TC level changed little and the LDL-C level apparently decreased. The mean HDL-C levels in adult women were similar to those in the 1970s and significantly greater by approximately 10 mg/dL than those in the 1990s (P < .001), whereas those in adult men >30 years of age were still low and were lower by about 10 mg/dL than the corresponding age groups in women. In adults aged 30-39, 40-49, and 50-59 years, the proportion of hypertriglyceridemia (TG levels ≥200 mg/dL) was 18.24%, 17.96%, and 21.88% in men and 2.70%, 7.08%, and 8.55% in women, respectively.


Currently, hypertriglyceridemia and low HDL-C in middle-aged men older than 30 years of age have become a growing problem.

  Juan Tan , Wentao Qiao , Jian Wang , Fengwen Xu , Yue Li , Jun Zhou , Qimin Chen and Yunqi Geng
  Interferon-induced proteins (IFPs) exert multiple functions corresponding to diverse interferon signals. However, the intracellular functions of many IFPs are not fully characterized. Here, we report that IFP35, a member of the IFP family with a molecular mass of 35 kDa, can interact with the bovine Tas (BTas) regulatory protein of bovine foamy virus (BFV). The interaction involves NID2 (IFP35/Nmi homology domain) of IFP35 and the central domain of BTas. The overexpression of IFP35 disturbs the ability of BTas to activate viral-gene transcription and inhibits viral replication. The depletion of endogenous IFP35 by interfering RNA can promote the activation of BFV, suggesting an inhibitory function of IFP35 in viral-gene expression. In addition, IFP35 can interact with the homologous regulatory protein of prototype FV and arrest viral replication and repress viral transcription. Our study suggests that IFP35 may represent a novel pathway of interferon-mediated antiviral activity in host organisms that plays a role in the maintenance of FV latency.
  Jinmin Gao , Lihong Huo , Xiaoou Sun , Min Liu , Dengwen Li , Jin- Tang Dong and Jun Zhou
  The familial cylindromatosis tumor suppressor CYLD is known to contain three cytoskeleton-associated protein glycine-rich (CAP-Gly) domains, which exist in a number of microtubule-binding proteins and are responsible for their association with microtubules. However, it remains elusive whether CYLD interacts with microtubules and, if so, whether the interaction is mediated by the CAP-Gly domains. In this study, our data demonstrate that CYLD associates with microtubules both in cells and in vitro, and the first CAP-Gly domain of CYLD is mainly responsible for the interaction. Knockdown of cellular CYLD expression dramatically delays microtubule regrowth after nocodazole washout, indicating an activity for CYLD in promoting microtubule assembly. Our data further demonstrate that CYLD enhances tubulin polymerization into microtubules by lowering the critical concentration for microtubule assembly. In addition, we have identified by wound healing assay a critical role for CYLD in mediating cell migration and found that its first CAP-Gly domain is required for this activity. Thus CYLD joins a growing list of CAP-Gly domain-containing proteins that regulate microtubule dynamics and function.
  Min Liu , Ritu Aneja , Xiaodong Sun , Songbo Xie , Hongxia Wang , Xiaojing Wu , Jin-Tang Dong , Minggang Li , Harish C. Joshi and Jun Zhou
  Eg5 is a motor protein of the kinesin family that is critical for spindle assembly during mitosis and has recently been implicated in tumorigenesis. It is largely unknown how Eg5 expression is regulated in cells. In this study, we present the first evidence that the cellular Eg5 level is down-regulated by Parkin, an E3 ubiquitin ligase well known for its role in the development of Parkinson disease. Our data show that Parkin does not trigger Eg5 protein degradation through the ubiquitin-proteasome pathway. Instead, Parkin represses Eg5 gene transcription by blocking c-Jun binding to the activator protein 1 site present in the Eg5 promoter. Our data further show that Parkin inactivates c-Jun NH2-terminal kinase (JNK), resulting in decreased phosphorylation of c-Jun. The inactivation of JNK is further mediated by multiple monoubiquitination of Hsp70. Importantly, both the ubiquitination of Hsp70 and the subsequent inactivation of the JNK-c-Jun pathway are crucial for Parkin to down-regulate Eg5 expression. These results thus uncover a novel function for Parkin in modulating the expression of Eg5 through the Hsp70-JNK-c-Jun signaling pathway.
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