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Fertil Steril. 2012 Jun;97(6):1250-9. doi: 10.1016/j.fertnstert.2012.04.037.

Germline development from human pluripotent stem cells toward disease modeling of infertility.

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1
Gladstone Institute of Cardiovascular Disease, San Francisco, California 94158, USA. yhayashi@gladstone.ucsf.edu

Abstract

Infertility caused by the disruption or absence of germ cells (i.e., sperm or egg) is a major and largely incurable medical problem. In vitro disease modeling using normal human germline cells is required to better understand the precise molecular mechanisms of infertility and to develop drugs to treat this condition. Recent advances in the differentiation methods of embryonic stem cells (ESCs) provide new avenues to generate germ cells in vitro. Furthermore, the discovery that induced pluripotent stem cells (iPSCs) can be created from a patient's adult somatic cells by introducing the combinations of several transcription factors (e.g., OCT3/4, SOX2, KLF4, and MYC) enables us to generate new and powerful in vitro human disease models. In this review, we summarize recent advances in the development of human germ cells from in vivo and in vitro cultured ESCs/iPSCs. Based on these studies, we propose strategies to develop in vitro disease models of infertility using human ESCs/iPSCs. Then, we also discuss the challenges that need to be addressed to harness the full potential of these models. These models will enable us to understand the precise molecular pathologies of infertility and will aid in the development of new treatments.

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