ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2013, Vol. 44 ›› Issue (5): 788-795.doi: 10.11843/j.issn.0366-6964.2013.05.017

Previous Articles     Next Articles

Cloning, Prokaryotic Expression and Polyclonal Antibody Preparation of Rabbit IL-10 Gene

WAN Xiao-ying1, 2, QIN Li-zhi1, 2, SHI Li-juan1, 2, WANG Wen-zhou1, 2, LI Ting1, 2,LI Bi-chun1, 2, WU Xin-sheng1, 2*   

  1. (1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;2. Jiangsu Key Laboratory of Animal Genetics & Breeding and Molecular Design, Yangzhou 225009, China
  • Received:2012-11-02 Online:2013-05-23 Published:2013-05-23

Abstract:

Interleukin-10 (IL-10) has been recently identified as a multifunctional cytokine because of its close link with immune regulation and anti-inflammatory responses. The aim of this study was to clone and express rabbit IL-10 gene in order to prepare the polyclonal antibody against recombinant IL-10. The IL-10 gene of New Zealand white rabbit was amplified by RT-PCR from spleen total RNA, then was sub-cloned into prokaryotic expression vector pET-32a and expressed in E. coli BL21 (DE3) host cells. Fusion protein was purified and immunized into guinea pigs so as to prepare polyclonal antibody. Finally, the sensitivity and specificity of the polyclonal antibody were detected through indirect ELISA and Western blot, respectively. As a result, rabbit IL-10 gene was cloned, and the obtained 537 bp fragment had 99% identities to the previously identified rabbit IL-10 gene (NM_001082045) at nucleotide levels; recombinant vector pET-IL-10 was successfully constructed; SDS-PAGE electrophoresis showed that the fusion protein was well expressed; the anti-IL-10 polyclonal antibody showed high sensitivity (1:56 000) and specificity. The above results indicate that IL-10 gene has been successfully cloned and expressed, and the guinea pig anti-rabbit IL-10 polyclonal antibody has been prepared by immunization with the purified recombinant IL-10 protein, which lays the foundation for further studies on rabbit IL-10 gene functions.

CLC Number: