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Gene cloning of porcine adiponectin gene from adipose tissue and construction of its eukaryotic expression vector.

J Anim Physiol Anim Nutr (Berl). 2014 Jun;98(3):517-21. doi:10.1111/jpn.12101. Epub 2013 Jul 23
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摘要


To clone adiponectin (ADPN) gene from Shaziling porcine adipocyte and construct its eukaryotic expression vector, total RNA was extracted from subcutaneous fatty tissue. One pair of specific primers was designed by Primer 5.0 software according to the sequence of ADPN gene of porcine available in GenBank. The ADPN gene was amplified by PCR from cDNA and cloned into pMD18-T vector to construct recombinant clonal vector pMD-ADPN, sequenced and analysed. A recombinant expression plasmid pPICZaA-ADPN was constructed by subcloning the cloned ADPN gene into the linearized pPICZaA vector. Then, the plasmid pPICZaA-ADPN was expressed in Pichia pastoris (GS115) by electrotransformation. Western blot and Bradford analysis were used to determine the target protein induced by methanol. Results showed that the genome size of ADPN was 732 bp and encoded 244 amino acid, the nucleotide sequence of ADPN shared 100% identity with that of porcine available in GenBank. Western blot and Bradford analysis showed that the recombinant ADPN was expressed in GS115 correctly and has certain immune activity. The expression level of ADPN was 28.5 μg/ml. In conclusion, the recombinant ADPN could express in eukaryotic expression vector pPICZaA-ADPN constructed in this study effectively.

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