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  • Title: Mutations in HSP70-2 gene change the susceptibility to clinical mastitis in Chinese Holstein.
    Author: Huang P, Lu C, Li J, Xu J, Liu Z, Wang Q, Wang Z, Huo J, Li H, Teng Y, Cai Y.
    Journal: Gene; 2015 Mar 15; 559(1):62-72. PubMed ID: 25592821.
    Abstract:
    To select the molecular markers susceptible to mastitis and reduce the loss induced by mastitis, the PCR-SSCP method was adopted to investigate the correlation between SNPs of the HSP70-2 gene and mastitis in 103 Chinese Holstein. 25 new polymorphisms were detected in this study: 9 SNPs (g.-115 G→A, g.-98 T→C, g.117 C→A, g.156 A→C, g.1743 G→A, g.1746 C→T, g.1761 T→G, g.1770 C→G, g.1877 G→C) were found to be associated with mastitis; 2 key SNPs led to amino-acid changes: g.1770 C→G (590 Asp→Glu), g.1877 G→C (626 Gly→Ala). 626 Gly→Ala affected the protein secondary structure. 3 potential cow HSP70-2 proteins were found in all the 103 individuals, but predicted three-dimensional structures of 3 proteins are the same with each other. It is suggested that 9 SNPs increase the susceptibility to mastitis due to their low polymorphisms and can be used as molecular markers to breed the dairy cows resistant to mastitis.
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