Hepatocyte growth factor (HGF) gene: molecular characterisation of complete coding sequence and expression profile in Tarim red deer (Cervus hanglu yarkandensis) antlers
ANIMAL PRODUCTION SCIENCE(2024)
Abstract
Context. The cDNA sequence of hepatocyte growth factor (HGF) gene in Tarim red deer has not been reported yet. Aims. This study aims to obtain the full-length cDNA sequence of HGF and analyse its expression in different parts of developing antler tissues. The result provides foundational data for understanding the potential role of HGF in regulating antler growth and development. Methods. Rapid amplification of cDNA ends was used to obtain the full-length cDNA sequence of Tarim red deer HGF. The pET28a (+) vector was constructed for prokaryotic expression of the recombinant protein in E. coli BL21 (DE3). The expression of HGF in different antler tissues was detected using real-time quantitative polymerase chain reaction and immunohistochemistry. Key results. The full-length cDNA of Tarim red deer HGF was found to consist of a 156 bp 5'untranslated region (UTR), a 112 bp 3'UTR, and a 2193 bp open reading frame encoding a protein of 730 amino acids. The recombinant HGF protein expressed in prokaryotic cells formed inclusion bodies. HGF and its receptor c-Met were expressed in all four different antler tissues, with the highest expression level in velvet skin, followed by bone, cartilage, and the lowest in the mesenchyme. Conclusions. The study successfully obtained the full-length cDNA sequence of Tarim red deer HGF and identified the expression profile of HGF and c-Met in different antler tissues. HGF is a candidate gene that may play a role in regulating the growth and development of deer antler. Implications. These findings provide fundamental data for further investigations into the role of HGF in antler development. Understanding the function of HGF in antler development could have implications for elucidating the mechanism of antler regeneration.
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Key words
hepatocyte growth factor,HGF,immunohistochemistry,molecular cloning,prokaryotic expression,tarim red deer
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