Cell cycle-dependent expression of the mouseRad51 gene in proliferating cells (original) (raw)

Abstract

The mouse_Rad51_ gene is a mammalian homologue of the_Escherichia coli recA_ and yeast_RAD51_ genes, both of which are involved in homologous recombination and DNA repair in mitosis and meiosis. The expression of mouse_Rad51_ mRNA was examined in synchronized mouse m5S cells. The_Rad51_ transcript was observed from late G1 phase through to M phase. During the period of late G1-S-G2, the RAD51 proteins were observed exclusively in nuclei. Activation by mitogens of T cell and B cell proliferation in spleen induced the expression of_Rad51_ mRNA. By immunohistochemical analyses, the mouse RAD51 protein was detected in proliferating cells: spermatogonia in testis, immature T cells in thymus, germinal center cells of the secondary lymphatic nodules of spleen and intestine, follicle cells in ovary and epithelial cells in uterus and intestine. It was also expressed in spermatocytes during early and mid-prophase of meiosis and in resting oocytes before maturation. Thus, mouse_Rad51_ expression is closely related to the state of cell proliferation and is presumably involved in DNA repair coupled with DNA replication, as well as in meiotic DNA recombination in spermatocytes.

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Authors and Affiliations

  1. Department of Molecular Embryology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, 565, Osaka, Japan
    A. Yamamoto, H. Yagi, T. Habu, Y. Yoshimura, A. Matsushiro, Y. Nishimune & T. Morita
  2. Department of Neurosurgery, Osaka University Medical School, 2-2 Yamadaoka, Suita, 565, Osaka, Japan
    T. Taki
  3. Osaka Women's University, 2-1, Daisen-cho, Sakai, 590, Osaka, Japan
    Kayo Yoshida & Kazuhiko Yamamoto
  4. Department of Biotechnology, Faculty of Biological Science, Kinki University, 930 Nishimitani, Uchidacho, Nakagun, 649-64, Wakayama, Japan
    A. Matsushiro

Authors

  1. A. Yamamoto
  2. H. Yagi
  3. T. Habu
  4. Y. Yoshimura
  5. A. Matsushiro
  6. Y. Nishimune
  7. T. Morita
  8. T. Taki
  9. Kayo Yoshida
  10. Kazuhiko Yamamoto
  11. A. Matsushiro

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Communicated by M. Sekiguchi

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Yamamoto, A., Yagi, H., Habu, T. et al. Cell cycle-dependent expression of the mouse_Rad51_ gene in proliferating cells.Molec. Gen. Genet. 251, 1–12 (1996). https://doi.org/10.1007/BF02174338

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