國家衛生研究院 NHRI:Item 3990099045/4077
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    题名: Intronic CArG box regulates cysteine-rich protein 2 expression in the adult but not in developing vasculature
    作者: Chen, CH;Wu, ML;Lee, YC;Layne, MD;Yet, SF
    贡献者: Institute of Cellular and Systems Medicine
    摘要: OBJECTIVE: An absence of cysteine-rich protein 2 (CRP2) enhances vascular smooth muscle cell (VSMC) migration and increases neointima formation after arterial injury; therefore, CRP2 plays an important role in the response to vascular injury. The goal of the present study was to elucidate the molecular mechanisms that preserve CRP2 expression in the adult vasculature and thus might serve to inhibit the response to injury. METHODS AND RESULTS: We generated a series of transgenic mice harboring potential Csrp2 regulatory regions with a lacZ reporter. We determined that the 12-kb first intron was necessary for transgene activity in adult but not in developing vasculature. Within the intron we identified a 6.3-kb region that contains 2 CArG boxes. Serum response factor preferentially bound to CArG2 box in gel mobility shift and chromatin immunoprecipitation assays; additionally, serum response factor coactivator myocardin factors activated CRP2 expression via the CArG2 box. Mutational analysis revealed that CArG2 box was important in directing lacZ expression in VSMC of adult vessels. CONCLUSIONS: Although CRP2 expression during development is independent of CArG box regulatory sites, CRP2 expression in adult VSMC requires CArG2 element within the first intron. Our results suggest that distinct mechanisms regulate CRP2 expression in VSMC that are controlled by separate embryonic and adult regulatory modules.
    日期: 2010-04
    關聯: Arteriosclerosis, Thrombosis, and Vascular Biology. 2010 Apr;30(4):835-842.
    Link to: http://dx.doi.org/10.1161/atvbaha.109.197251
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1079-5642&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000275712500030
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77950877724
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