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Expression of Nesfatin-1/NUCB2 and Its Binding Site in Mouse Testis and Epididymis  

Kim, Jin-Hee (Dept. of Bioenvironmental Technology, College of Natural Sciences, Seoul Women's University)
Kim, Hyun-Sook (Dept. of Bioenvironmental Technology, College of Natural Sciences, Seoul Women's University)
Kim, Su-Min (Dept. of Bioenvironmental Technology, College of Natural Sciences, Seoul Women's University)
Yang, Hye-Jin (Dept. of Bioenvironmental Technology, College of Natural Sciences, Seoul Women's University)
Cho, Hyun-Hae (Dept. of Bioenvironmental Technology, College of Natural Sciences, Seoul Women's University)
Hwang, Sup-Yong (Dept. of Bioenvironmental Technology, College of Natural Sciences, Seoul Women's University)
Moon, Chan-Il (Institute of Biomedical Science, College of Medicine, Hanyang University)
Yang, Hyun-Won (Dept. of Bioenvironmental Technology, College of Natural Sciences, Seoul Women's University)
Publication Information
Development and Reproduction / v.15, no.3, 2011 , pp. 249-256 More about this Journal
Abstract
Nesfatin-1/NUCB2, which is secreted from the brain, is known to control appetite and energy metabolism. Recent studies have been shown that nesfatin-1/NUCB2 was expressed not only in the brain, but it was also expressed in the gastric organs and adipose tissue. However, little is known about the expression of nesfatin-1/NUCB2 in the male reproductive system. Therefore, we examined whether the nesfatin-1/NUCB2 and its binding site exists in the male reproductive organs. Nesfatin-1/NUCB2 mRNA and protein were detected in the mouse testis and epididymis by PCR and Western blot analysis. As a result of the immunohistochemistry staining, the nesfatin-1 protein was localized at the interstitial cells and Leydig cells in the testis. Nesfatin-1 binding sites were also displayed at boundary cells in the tunica albuginea. Furthermore, in order to examine if the expression of nesfatin-1/NUCB2 mRNA in the testis and epididymis were affected by gonadotropin, its mRNA expression was analyzed after PMSG administration into mice. NUCB2 mRNA expression levels were increased in both of the testis and epididymis after PMSG administration. These results demonstrated for the first time that nesfatin-1 and its binding site were expressed in the mouse testis and epididymis. In addition, nesfatin-1/NUCB2 mRNA expression was controlled by gonadotropin, suggesting a possible role of nesfatin-1 in the male reproductive organs as a local regulator. Due to this, further study is needed to elucidate the functions of nesfatin-1 on the male reproductive system.
Keywords
Epididymis; nesfatin-1; NUCB2; PMSG; Testis;
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