Characterization and expression of cell division cycle 2 (Cdc2) mRNA and protein during ovarian development of the giant tiger shrimp Penaeus monodon

Aug 1, 2013General and comparative endocrinology

Levels of a key cell division molecule during ovary development in giant tiger shrimp

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Abstract

The PmCdc2 gene is 900bp long and encodes a protein of 299 amino acids.

  • Expression levels of PmCdc2 in wild broodstock significantly increased in the later ovarian stages, peaking in stage IV (mature) ovaries.
  • In eyestalk-ablated broodstock, PmCdc2 expression was higher across all ovarian stages compared to intact broodstock.
  • 5-HT injection in 18-month-old P. monodon led to a significant increase in PmCdc2 expression at 1 hour post injection.
  • Western blot analysis detected a 34kDa band corresponding to PmCdc2 in ovaries across various stages, with the strongest signal in stage IV.
  • Phosphorylated Cdc2 (Thr161) was present in all ovarian stages, indicating its potential role in oocyte maturation.

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