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The CatSper channel mediates progesterone-induced Ca2+ influx in human sperm

Author

Listed:
  • Timo Strünker

    (Center of Advanced European Studies and Research, Ludwig-Erhard-Allee 2, 53175 Bonn, Germany)

  • Normann Goodwin

    (Center of Advanced European Studies and Research, Ludwig-Erhard-Allee 2, 53175 Bonn, Germany)

  • Christoph Brenker

    (Center of Advanced European Studies and Research, Ludwig-Erhard-Allee 2, 53175 Bonn, Germany)

  • Nachiket D. Kashikar

    (Center of Advanced European Studies and Research, Ludwig-Erhard-Allee 2, 53175 Bonn, Germany
    Present address: Max Planck Institute for Biophysical Chemistry, Max Planck Research Group Sleep and Waking, Am Faßberg 11, D-37077 Göttingen, Germany.)

  • Ingo Weyand

    (Institute of Complex Systems – Cellular Biophysics (ICS-4), Forschungszentrum Jülich, 52425 Jülich, Germany)

  • Reinhard Seifert

    (Center of Advanced European Studies and Research, Ludwig-Erhard-Allee 2, 53175 Bonn, Germany)

  • U. Benjamin Kaupp

    (Center of Advanced European Studies and Research, Ludwig-Erhard-Allee 2, 53175 Bonn, Germany)

Abstract

Progesterone's role in sperm The female steroid hormone progesterone is produced by the ovaries and the placenta, and supports gestation and embryogenesis through its actions on a well-characterized nuclear progesterone receptor. But progesterone released by cells surrounding the egg also stimulates sperm cells within the Fallopian tubes and increases their fertilizing ability, and the mechanism of this action of progesterone has remained elusive. Two independent research groups now report that progesterone potently activates CatSper, the principal Ca2+ channel of the sperm flagellum. Their data demonstrate that the CatSper channel or a directly associated membrane protein serves as a novel progesterone receptor that can mediate a fast, non-genomic effect of progesterone at the level of the sperm plasma membrane. These results should help to define the physiological role of progesterone and CatSper in sperm, and could lead to the development of new classes of non-hormonal contraceptives.

Suggested Citation

  • Timo Strünker & Normann Goodwin & Christoph Brenker & Nachiket D. Kashikar & Ingo Weyand & Reinhard Seifert & U. Benjamin Kaupp, 2011. "The CatSper channel mediates progesterone-induced Ca2+ influx in human sperm," Nature, Nature, vol. 471(7338), pages 382-386, March.
    • Handle: RePEc:nat:nature:v:471:y:2011:i:7338:d:10.1038_nature09769
    DOI: 10.1038/nature09769
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