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The Scientific World Journal
Volume 2013 (2013), Article ID 135470, 7 pages
http://dx.doi.org/10.1155/2013/135470
Research Article

Kisspeptin-10 Modulates the Proliferation and Differentiation of the Rhesus Monkey Derived Stem Cell Line: R366.4

1State Key Laboratory of Brain and Cognitive Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
2Reproductive Neuroendocrinology Laboratory, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
3State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China

Received 16 September 2013; Accepted 9 October 2013

Academic Editors: M. W. Jann and B. A. Moura

Copyright © 2013 Tanzeel Huma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The rhesus monkey embryonic stem cell line R366.4 has been identified to differentiate into a number of cell types. However, it has not been well characterized for its response to drugs affecting reproductive endocrinology. Kisspeptins (KPs) are ligands for the GPR-54, which is known to modulate reproductive function. The current study was designed to determine the effect of the KP-10 peptide on R366.4 cells and to investigate the role of KP-GPR54 in the cell proliferation process. Four different doses (0.1, 1, 10, and 100 nM) of KP-10 and control were selected to evaluate cell growth parameters and cellular morphological changes over a 72 hr period. The cells were treated with kisspeptin-10 during the early rosette stage. Proliferation rates, analyzed by flow cytometry and cell count methods, were found to be decreased after treatment. Moreover, the number of rosettes was found to decrease following KP-10 treatments. Morphological changes consisting of neuronal projections were also witnessed. This suggested that KP-10 had an antiproliferative effect on R366.4 cells leading to a differentiation state and morphological changes consistent with neuronal stem cell development. The R366.4 stem cell line differentiates based on kisspeptin signaling and may be used to investigate reproductive cell endocrinology in vitro.