Investigation on CAST, CAPN1 and CAPN3 porcine gene polymorphisms and expression in relation to post-mortem calpain activity in muscle and meat quality
MEAT SCIENCE
Authors: Gandolfi, G.; Pomponio, L.; Ertbjerg, P.; Karlsson, A. H.; Costa, L. Nanni; Lametsch, R.; Russo, V.; Davoli, R.
Abstract
This study aimed to detect variability in CAST, CAPN1 and CAPN3 porcine genes and to investigate the effect of CAST and CAPN1 polymorphisms on the activity of native and autolyzed mu-calpain and m-calpain, measured from 1 to 72 h post-mortem in Longissimus dorsi (LD) muscle of 30 pigs. Effects of polymorphisms on meat quality parameter such as pH, color and drip loss were also evaluated. Samples carrying CAST EU137105: g.76,872AA genotype showed higher autolyzed mu-calpain activity 24 and 72 h post-mortem, as well as lower drip loss values. Expression of CAST, CAPN1 and CAPN3 was assessed in LD muscles divergent for shear force. Higher CAST and CAPN3 expression was found in LD with high shear force (P<0.2), confirming a direct role for calpastatin but not for calpain 3 in meat tenderization. In conclusion, CAST gene affected post-mortem activation time of calpain and drip loss. (C) 2011 Elsevier Ltd. All rights reserved.
Association of Calpain 1 (CAPN1) and HRSP12 allelic variants in beef cattle with carcass traits
AFRICAN JOURNAL OF BIOTECHNOLOGY
Authors: Hou, Guanyu; Huang, Meng; Gao, Xue; Li, Junya; Gao, Huijiang; Ren, Hongyan; Xu, Shangzhong
Abstract
Calpain 1 (CAPN1) and its activator HRSP12 are evaluated as candidate gene for quantitative trait loci (QTLs) affecting meat tenderness. In this study, SNPs were detected by sequencing in 323 cattle from 9 breeds. The association results showed that the A3553G and T824C loci individually related with marbling and tenderness, and CAPN1/HRSP12 double homozygote and heterozygote/homozygote pairs (AA/TT, AA/CC, AG/TT and GG/TT) had higher marbling score than the other groups. Our findings suggest that polymorphisms in CAPN1 and HRSP12 might be the important genetic factor influencing meat quality in carcass trait.