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Molecular cloning, expression and polymorphism of the porcine apolipoprotein A5 gene in a Jinhua × Pietrain F2 reference population

Published online by Cambridge University Press:  24 November 2009

L. F. Zhang ,
X. L. Jiang ,
X. C. Hua ,
Y. P. Lu  and
N. Y. Xu
L. F. Zhang
Affiliation:
College of Animal Science, Zhejiang University, Hangzhou, 310029, China
X. L. Jiang
Affiliation:
College of Animal Science, Zhejiang University, Hangzhou, 310029, China
X. C. Hua
Affiliation:
College of Animal Science, Zhejiang University, Hangzhou, 310029, China
Y. P. Lu
Affiliation:
College of Animal Science, Zhejiang University, Hangzhou, 310029, China
N. Y. Xu*
Affiliation:
College of Animal Science, Zhejiang University, Hangzhou, 310029, China
*
†E-mail: nyxu@zju.edu.cn
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Abstract

As a newly described member of the apolipoprotein gene family, apolipoprotein A5 (APOA5) has been suggested to play a key role in the triglyceride metabolism in both human and mice. The aim of this study was to identify the porcine (Sus scrofa) APOA5 gene, determine its mRNA and its mutations that are associated with lipid accumulation. The porcine APOA5 cDNA was amplified by reverse transcriptase polymerase chain reaction using the information of the mouse or other mammals. It had been determined that the open reading frame of the porcine APOA5 gene consists of 1092 bp, which encodes a predicted protein composed of 363 amino acids with a similarity to bovine (80.43%) and to human (78.47%). The expression analysis indicated that the porcine APOA5 gene was expressed in hypophysis, fat and liver. Twelve single nucleotide polymorphisms (SNPs), including 4 SNPs in the 5′ end, 1 SNP in second intron, 1 SNP in third exon and 6 SNPs in the 3′ end, were identified in the porcine APOA5 gene and genotyped on the Jinhua × Pietrain F2 reference population, it had revealed that the SNP of C1834T was significantly associated with average backfat thickness and leaf fat weight (P < 0.01 and P < 0.05, respectively). In conclusion, this study has got basic information of the porcine APOA5 gene and provides evidence that the APOA5 gene could be a potential candidate gene for fat deposition.

Keywords

porcineAPOA5 genecloningexpressionpolymorphism
Type
Full Paper
Information
animal , Volume 4 , Issue 4 , April 2010 , pp. 523 - 529
Copyright
Copyright © The Animal Consortium 2009

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