Identification of Germline Stem Cells in the Ovary of the Teleost Medaka

Author:

Nakamura Shuhei1,Kobayashi Kayo1,Nishimura Toshiya12,Higashijima Shin-ichi34,Tanaka Minoru12

Affiliation:

1. Laboratory of Molecular Genetics for Reproduction, National Institute for Basic Biology, Okazaki 444-8787, Japan.

2. Department of Basic Biology, the Graduate University for Advanced Studies (SOKENDAI), Okazaki, Aichi 444-8585, Japan.

3. National Institutes of Natural Sciences, Okazaki Institute for Integrative Bioscience, National Institute for Physiological Sciences, Okazaki, Aichi 444-8787, Japan.

4. Department of Physiological Sciences, the Graduate University for Advanced Studies (SOKENDAI), Okazaki, Aichi 444-8585, Japan.

Abstract

Keeping Egg Production Going Whether oogenesis ceases around birth in vertebrate ovaries has been a topic of long-standing interest and considerable debate. Nakamura et al. (p. 1561 , published online 20 May) now identify germline stem cells in the ovary of the teleost fish medaka. The stem cells are found as clusters of germ cells (termed germinal cradles) in a cord-like structure that expresses sox9 , a gene critical for testis formation in mammals. The cords are buried within the ovary within the germinal epithelium. This work in fish shows that there can indeed be continuing egg production from vertebrate germline stem cells.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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