Effect of Gender-Specific Adult Bovine Serum on Gene Expression During Myogenesis
2012
Lee, E.J., Yeungnam University, Gyeongsan, Republic of Korea | Pokharel, Smritee, Konkuk University, Seoul, Republic of Korea | Kim, J.H., Yeungnam University, Gyeongsan, Republic of Korea | Nam, S.S., Konkuk University, Seoul, Republic of Korea | Choi, I.H., Yeungnam University, Gyeongsan, Republic of Korea
Gender specificity in muscle growth and development is well known. Genesis of muscle is dependent on proliferation and differentiation potential of resident myogenic satellite cells (MSCs) present in muscle fibers. Multipotential capacity of forming myocyte, osteocyte, and adipocyte like cell makes MSCs a unique stem cell. To understand the molecular mechanism involved in determination of muscle quality due to difference in hormone concentration of different gender of animals, MSCs were isolated from bovine skeletal muscle and cultured in male, female, and castrated serum supplemented media. DNA microarray used consisted of 24,000 spots with 70 mer oligo in each spot. A total of 88 genes were up-regulated and 551 genes were down-regulated by more than two fold. Among up-regulated gene, 33, 34, and 21 genes were found up-regulated in cells grown in male, female, and castrated serum, respectively. Interestingly, male serum showed 4, female 11 and castrated male showed 4 genes expressed highly in each gender. Further study on the highly up-regulated gene may unfold the mystery of gender specificity found in muscle development. Also, the identification of differentially expressed genes in gender-specific serum will add information on infrastructure of bovine genome research.
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