@article{MAKHILLJAVA20131223994,
title = {Cloning, Expression and Purification of Nanog Protein from Capra hircus in Escherichia coli},
journal = {Journal of Animal and Veterinary Advances},
volume = {12},
number = {2},
pages = {201-207},
year = {2013},
issn = {1680-5593},
doi = {javaa.2013.201.207},
url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2013.201.207},
author = {X.B.,X.M.,L.X.,G.Y.,X.H.,P.,G.H.,M.,S.S. and},
keywords = {Capra hircus,Nanog gene,cloning,prokaryotic expression,protein purification},
abstract = {Nanog is one of important transcription factors to maintain
characteristics of pluripotent stem cells. The present study was to clone Nanog
of Capra hircus to express His-Nanog protein in E. coli BL 21
cells and further to purify it. The total RNA was extracted from primordial
genital ridge tissues of a fetal lam and by means of RT-PCR, Nanog gene
was amplified which was subcloned to pET32a to construct its prokaryotic expression
vector. Confirmed by restrictive endonuclease digestion and DNA sequencing,
the recombinant plasmid was transformed into E. coli BL21(DE3) and His-Nanog
fusion protein was expressed by the induction of IPTG and identified with SDS-PAGE
analysis. Under denaturing condition, the His-Nanog protein was purified by
using Ni-NTA resin and verified by Western blotting assay. The results showed
that The Open Reading Frame (ORF) of Nanog gene in Capra hircus
is composed of 903 nucleutide acids, coding 320 amino acids; SDS-PAGE assay
showed that His-Nanog fusion protein was efficiently expressed in form of inclusion
bodies in E. coli BL21 (DE3) inclusion bodies were solubilized in 6 mol
L-1 GuHCl, His-Nanog fusion protein with higher purity was purified
by using Ni-NTA resin; Western blotting assay showed that the purified His-Nanog
could bind to anti-His tag antibody specifically indicating the expected immunogenicity.
This recombinant protein could be used directly to prepare polyclonal or monoclonal
anti-Nanog antibody which will lead to study Nanogs function or characteristics
of pluripoten stem cells (such as iPS cells) in Capra hircus.}
}