ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (4): 841-846.doi: 10.11843/j.issn.0366-6964.2018.04.023

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Identification of the Melanocortin-4-Receptor in Back Shoulder Brown Adipose Tissue by Western Blot

FAN Kui-kui1, LI Qiang1, YANG Wen-ya1, PAN Deng1, LI Hai-jun1, DU Chen-guang1,2*   

  1. 1. College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China;
    2. Vocational and Technical College of Inner Mongolia Agricultural University, Baotou 014109, China
  • Received:2017-09-04 Online:2018-04-23 Published:2018-04-23

Abstract:

The main objective of this study was focused on expression of low abundance protein and details of the experimental procedure detected by Western blot. Brown adipose tissue (BAT) from 6-8 week old C57/BL6 mice were chosen as experimental materials and detected for the expression of Melanocortin-4-receptor (MC4R) using different parameters including pH and content of Sodium Dodecyl Sulfate (SDS) in electrotransfer buffers. The effects of protein processing methods, components and pH of electrotransfer buffers on transfer efficiency were investigated. The results showed that initial voltage and power were significantly related to the content of sodium SDS and pH of the electrotransfer buffers. The concentration of SDS in the transmembrane buffer was inverse to the transfer voltage and power under the constant circulating membrane. The transmembrane voltage and power of buffer in pH 8.0 were significantly higher than those of buffers in pH 7.6 (P<0.01) and pH 8.6 (P<0.001). The expression of relating proteins, especially MC4R, in group of alcohols mixed lysate (20% Methanol+1% Triton+1% SDS+RIPA) was significantly higher than that in the single RIPA group (P<0.05) and Trizol group (P<0.01). The result indicate that adding enhancers (Triton and SDS) to the lysate buffer can promote the efficiency of protein extraction and improve the sensitivity of antibody for proteins. Those procedure may help to understand the details and improve the sensitivity and repeatability of the Western blot.

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