Publication: Potential roles of transglutaminase and thioredoxin in the release of gonad-stimulating factor in Penaeus monodon: Implication from differential expression in the brain during ovarian maturation cycle
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Issued Date
2011-12-01
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ISSN
18747787
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2-s2.0-84855966621
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Mahidol University
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SCOPUS
Bibliographic Citation
Marine Genomics. Vol.4, No.4 (2011), 279-285
Suggested Citation
Ponsit Sathapondecha, Supattra Treerattrakool, Sakol Panyim, Apinunt Udomkit Potential roles of transglutaminase and thioredoxin in the release of gonad-stimulating factor in Penaeus monodon: Implication from differential expression in the brain during ovarian maturation cycle. Marine Genomics. Vol.4, No.4 (2011), 279-285. doi:10.1016/j.margen.2011.07.004 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/11222
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Title
Potential roles of transglutaminase and thioredoxin in the release of gonad-stimulating factor in Penaeus monodon: Implication from differential expression in the brain during ovarian maturation cycle
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Abstract
The synthesis of vitellogenin during ovarian maturation in crustacean is induced by gonad-stimulating factor(s) that are synthesized in the brain and thoracic ganglia. This process is negatively regulated by a gonad-inhibiting hormone (GIH) from the eyestalk. This study utilized differential-display RT-PCR technique to identify putative genes in brain and thoracic ganglia that may be involved in ovarian maturation of the black tiger shrimp, Penaeus monodon under the condition in which the expression of GIH was suppressed by GIH-specific dsRNA. After excluding redundant clones and subsequent verification by RT-PCR, 10 and 5 transcripts exhibited up-regulated and down-regulated expressions, respectively, in the GIH-dsRNA injected shrimp when compared with the Tris/NaCl injected shrimp. Among the up-regulated genes, a full sequence of thioredoxin cDNA was cloned, and nucleotide sequence analysis showed that it was highly similar to other crustacean thioredoxin. The thioredoxin gene as well as the other four genes including transglutaminase and three unknowns; U10-11, U10-15 and U13-11 that were up-regulated upon GIH-knockdown exhibited similar expression profile in the brain during ovarian maturation cycle. The highest expression level was detected in the brain of early-vitellogenic female shrimp suggesting that they are required for an initial stage of vitellogenesis. Our results posted for the first time a possible function of transglutaminase and thioredoxin in regulating the gonad-stimulating pathway in the brain of the shrimp. © 2011 Elsevier B.V.