Investigation of porcine FABP3 and LEPR gene polymorphisms and mRNA expression for variation in intramuscular fat content

Title
Investigation of porcine FABP3 and LEPR gene polymorphisms and mRNA expression for variation in intramuscular fat content
Author(s)
리샤오핑[리샤오핑]김상욱[김상욱]최정석[최정석]이윤미이철구[이철구]최봉환[최봉환]김태헌[김태헌]최양일[최양일]김종주김관석[김관석]
Keywords
QUANTITATIVE TRAIT LOCI; ACID-BINDING PROTEINS; PORK QUALITY TRAITS; MEAT QUALITY; ASSOCIATION ANALYSIS; BACKFAT THICKNESS; BODY-COMPOSITION; CANDIDATE GENES; CROSSBRED PIGS; H-FABP
Issue Date
201003
Publisher
SPRINGER
Citation
MOLECULAR BIOLOGY REPORTS, v.37, no.8, pp.3931 - 3939
Abstract
Porcine chromosome 6 (SSC6) has been reported to have QTL affecting intramuscular fat content (IMF) in multiple populations. The objective of this study was to investigate the effect of FABP3 and LEPR genetic variations as well as their mRNA expression on the IMF trait in a three-generation of Korean native pig and Yorkshire crossed animals. Several polymorphisms of the FABP3 (HinfI, HaeIII and HinfI*) were significantly associated with moisture, tenderness and flavor score (P < 0.05), and were used to construct haploytpes: haplotype 1 (-TCT-) increased the marbling and intramuscular fat content, however, haplotype 2 (-CCT-) decreased tenderness. The LEPR AvaII polymorphism showed significant association with moisture, intramuscular fat, cholesterol and flavor score (P < 0.05). The linkage analyses with six microsatellites mapped FABP3 gene in the interval between the markers Sw1129 and S0228 (Sw1129-11.7 cM-FABP3-9.1 cM-S0228), and the LEPR gene between the markers S0121 and Sw322 (S0121-7.5 cM-LEPR-28.5 cM-Sw322). QTL mapping suggested a significant QTL affecting Moisture (83 cM) and IMF (84 cM) located close to marker S0228. The gene expression results showed that in the loin muscle, both of the FABP3 and LEPR genes showed significantly higher expression in pigs with higher IMF%, however, in the backfat, only FABP3 showed differential expression between these two groups of pigs (significantly higher expression in pigs with lower IMF%) (P < 0.05). In the liver, both of these two genes did not show any difference between the high and low IMF% groups.
URI
http://hdl.handle.net/YU.REPOSITORY/22750http://dx.doi.org/10.1007/s11033-010-0050-1
ISSN
0301-4851
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생명공학부 > 생명공학부 > Articles
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