Scientia Agricultura Sinica ›› 2013, Vol. 46 ›› Issue (16): 3452-3459.doi: 10.3864/j.issn.0578-1752.2013.16.016

• ANIMAL SCIENCE·VETERINARY SCIENCERE·SOURCE INSECT • Previous Articles     Next Articles

The Influences of Over-Expressing miR-137 on TYRP-1 and TYRP-2 in Melanocytes

MA Shu-hui1, XUE Lin-li2, XU Gang1, HOU Ya-qin3, GENG Jian-jun1, CAO Jing4, HE Xiao-yan1, WANG Hai-dong1, DONG Chang-sheng1   

  1. 1.College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801
    2.College of Information, Shanxi Agricultural University, Taigu 030801
    3.Animal Husbandry and Veterinary Bureau of Shanxi Province,Changzhi 046000
    4.Beijing Vocational College of Agriculture Department of Animal Husbandry and Veterinary, Beijing 102442
  • Received:2013-03-26 Online:2013-08-15 Published:2013-05-27

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Abstract: 【Objective】Coat color is one of the most important economic characters. There are as many as hundreds of regulation genes involved in the formation process of coat color, and the mechanism(s) have not been completely determined. TYRP-1 and TYRP-2 are involved in regulation and control of melanin synthesis, and they are members of tyrosinase family. MITF is inhibited by miR-137 at the translational level, however, TYRP-1 and TYRP-2 were regulated by MITF at the transcriptional level. In this study, the effect of miR-137 on the production of TYRP-1 and TYRP-2 by regulating MITF was studied. 【Method】Over-expression of miR-137 was conducted through the cell transfection technique and the contents of melanin in melanocytes were extracted, and then the level of TYRP-1 and TYRP-2 was detected using RT-PCR and western blot. 【Result】 The results showed that the contents of melanin were significantly reduced. TYRP1 mRNA was significantly reduced to 0.4 times and TYRP-2 mRNA was significantly reduced to 0.6 times. TYRP-1 protein was significantly reduced to 0.61 times and TYRP-2 protein was significantly reduced to 0.73 times. 【Conclusion】 Results of the study suggested that miR-137 indirectly regulates the variation of YRP-1 and TYRP-2 by regulating MITF, and the miR-137 may indirectly mediate the alteration of coat color through regulating the expression of TYRP-1and TYRP-2.

Key words: miR-137 , MITF , TYRP-1 , TYRP-2 , melanin

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