Injection of an antibody against a p21 c-Ha-ras protein inhibits cleavage in axolotl eggs.

نویسندگان

  • E Baltus
  • J Hanocq-Quertier
  • F Hanocq
  • J Brachet
چکیده

The presence of a ras protein was demonstrated in cleaving axolotl eggs by selective immunoprecipitation with a polyclonal antibody against a peptide encoded by the c-Ha-ras oncogene, cellular homolog of the v-Ha-ras oncogene of Harvey rat sarcoma virus. Injection of this antibody into axolotl oocytes subjected to progesterone treatment does not prevent meiotic maturation. Injection of the same antibody into a blastomere of axolotl eggs at the 2- or 4-cell stage causes cleavage arrest in the descendants of the injected blastomere. Cytological observations of the injected eggs show, in the arrested blastomeres, enlarged nuclei always surrounded by an intact nuclear envelope and containing uncondensed chromatin. The possible role of ras protein in meiosis and mitosis is discussed.

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عنوان ژورنال:
  • Proceedings of the National Academy of Sciences of the United States of America

دوره 85 2  شماره 

صفحات  -

تاریخ انتشار 1988