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ZFIN ID: ZDB-PUB-080227-21
Characterization and comparative expression of zebrafish calpain system genes during early development
Lepage, S.E., and Bruce, A.E.
Date: 2008
Source: Developmental dynamics : an official publication of the American Association of Anatomists   237(3): 819-829 (Journal)
Registered Authors: Bruce, Ashley, Lepage, Stephanie
Keywords: calpain, calpastatin, zebrafish, capn1, capn2, capn4, capn8, capns1, capns2
MeSH Terms:
  • Animals
  • Calpain/genetics*
  • Calpain/metabolism
  • Catalytic Domain/genetics
  • Embryo, Nonmammalian/embryology
  • Embryo, Nonmammalian/enzymology*
  • Evolution, Molecular
  • Gene Expression Regulation, Developmental*
  • Phylogeny
  • Zebrafish/embryology*
  • Zebrafish/genetics
  • Zebrafish/metabolism
PubMed: 18265014 Full text @ Dev. Dyn.
The classic calpain system has been implicated in regulating a variety of cellular processes including cell adhesion, migration, and intracellular signaling; however, little is known regarding the function of this system in vivo. Two heterodimeric Ca(2+)-dependent cysteine proteases, mu-calpain (CAPN1) and m-calpain (CAPN2), and the endogenous inhibitor calpastatin (CAST) comprise the classic/ubiquitous calpain system in mammals. Recently, knockout of two murine classic calpain genes, Capn2 and Capn4/Capns1, revealed that components of the classic system are indispensable for preimplantation development. We identified four classic calpain catalytic subunit genes (capn1a, 1b, 2a, 2b), two regulatory subunit genes (capns1a, 1b), and calpastatin (cast) from the zebrafish. Our data suggest that the components of the classic mammalian system are both conserved and expanded in the teleost lineage. In contrast to the classic/ubiquitous mammalian system, zebrafish calpain system genes acquire unique, tissue-specific patterns of expression within the first 2 days of development.