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Mapping, Tissue Distribution and Polymorphism Study of the Porcine SOCS2 and SOCS3 Genes
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 Title & Authors
Mapping, Tissue Distribution and Polymorphism Study of the Porcine SOCS2 and SOCS3 Genes
Li, X.Y.; Liu, B.; Fan, B.; Yu, M.; Zhu, M.J.; Xiong, T.A.; Li, K.;
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Using the somatic cell hybrid panel (SCHP) and radiation hybrid (IMpRH) panel, porcine SOCS2 gene was mapped at SSC5 (1/2) q21-q24 and closely linked with SW1383 marker (47 cR in distance), while SOCS3 gene was assigned to SSC12p11-(2/3p13) and closely linked with SW2490 (43 cR). The reverse transcriptase-polymerase chain reaction (RT-PCR) was performed to detect the expression of these two genes in the different tissues and the results showed that both SOCS2 and SOCS3 genes were widely expressed in tissues investigated (heart, liver, spleen, lung, kidney skeletal muscle, fat and brain), although some tissues showed lower gene expression. Moreover, SOCS2 and SOCS3 genes had different expression levels at different stages, in different tissues and in different breeds. A G/A substitution, which can be recognized by restriction enzyme of Cfr421, was observed in 5' untranslated region (5'-UTR) of SOCS2 gene. The allele frequencies was investigated by PCR-restriction fragment length polymorphism (PCR-RFLP) method and it showed that the allele frequency among Dahuabai, Erhualian, Yushan, Qingping, Large white and Landrace tested were different. Association analysis in a cross experimental populations revealed no significant association between the SOCS2 gene polymorphism and the economic traits investigated. The full-length coding regions (CDs) of porcine SOCS3 gene was obtained by RT-PCR.
Gene Mapping;Tissue Distribution;SNPs;SOCS2;SOCS3;
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