Environ Health Toxicol.  2014 ;29(1):e2014002.

Characterize and Gene Expression of Heat Shock Protein 90 in Marine Crab Charybdis japonica following Bisphenol A and 4-Nonylphenol Exposures

  • 1Department of Fisheries and Ocean Science, Chonnam National University, Yeosu, Korea. iskwak@chonnam.ac.kr


Heat shock protein 90 (HSP90) is a highly conserved molecular chaperone important in the maturation of a broad spectrum of protein. In this study, an HSP90 gene was isolated from Asian paddle crab, Charybdis japonica, as a bio-indicator to monitor the marine ecosystem.
This work reports the responses of C. japonica HSP90 mRNA expression to cellular stress by endocrine disrupting chemicals (EDCs), such as bisphenol A (BPA) and 4-nonylphenol (NP) using real-time. reverse transcription polymerase chain reaction.
The deduced amino acid sequence of HSP90 from C. japonica shared a high degree of homology with their homologues in other species. In a phylogenetic analysis, C. japonica HSP90 is evolutionally related with an ortholog of the other crustacean species. The expression of HSP90 gene was almost distributed in all the examined tissues of the C. japonica crab but expression levels varied among the different body parts of the crabs. We examined HSP90 mRNA expression pattern in C. japonica crabs exposed to EDCs for various exposure times. The expression of HSP90 transcripts was significantly increased in C. japonica crabs exposed to BPA and NP at different concentrations for 12, 24, 48 and 96 hours. The mRNA expression of HSP90 gene was significantly induced in a concentration- and time-dependent manner after BPA or NP exposures for 96 hours.
Taken together, expression analysis of Asian paddle crab HSP90 gene provided useful molecular information about crab responses in stress conditions and potential ways to monitor the EDCs stressors in marine environments.


Bisphenol A; Charybdis japonica; Gene expression; Heat shock protein 90; 4-Nonylphenol

MeSH Terms

Amino Acid Sequence
Asian Continental Ancestry Group
Endocrine Disruptors
Gene Expression*
Heat-Shock Proteins*
Human Body
Molecular Chaperones
Polymerase Chain Reaction
Reverse Transcription
RNA, Messenger
Endocrine Disruptors
Heat-Shock Proteins
Molecular Chaperones
RNA, Messenger
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