ZFIN ID: ZDB-PUB-100719-22
A 5'-flanking region of embryonic-type myosin heavy chain gene, MYH(M743)(-)(2), from torafugu Takifugu rubripes regulates developmental muscle-specific expression
Yasmin, L., Kinoshita, S., Asaduzzaman, M., Akolkar, D.B., Ikeda, D., Ono, Y., and Watabe, S.
Date: 2011
Source: Comparative biochemistry and physiology. Part D, Genomics & proteomics   6(1): 76-81 (Journal)
Registered Authors: Asaduzzaman, Md, Kinoshita, Shigeharu, Ono, Yosuke, Watabe, Shugo
Keywords: Green fluorescent protein, Myosin heavy chain, Regulatory region, Torafugu, Transcription factors
MeSH Terms:
  • Animals
  • Green Fluorescent Proteins/genetics
  • Green Fluorescent Proteins/metabolism*
  • Immunohistochemistry
  • Myosin Heavy Chains/genetics
  • Myosin Heavy Chains/metabolism*
  • Takifugu/genetics
  • Takifugu/metabolism*
PubMed: 20605755 Full text @ Comp. Biochem. Physiol. D Genom. Prot.
ABSTRACT
The myosin heavy chain gene, MYH(M743)(-)(2), is highly expressed in fast muscle fibers of torafugu embryos. However, the regulatory mechanisms involved in its expression have been unclear. In this study, we examined spatio-temporal expression patterns of this gene during development by injecting expression vectors containing the GFP reporter gene fused to the 5'-flanking region of MYH(M743)(-)(2) into fertilized eggs of zebrafish and medaka. Although the -2.1kb 5'-flanking region of torafugu MYH(M743)(-)(2) showed no homology with the corresponding regions of zebrafish and medaka orthologous genes on the rVISTA analysis, the torafugu 5'-flanking region activated the GFP expression which was detected in the myotomal compartment for both zebrafish and medaka embryos. The GFP expression was localized to fast and slow muscle fibers in larvae as revealed by immunohistochemical analysis. In addition to the above tissues, GFP was also expressed in jaw, eye and pectoral fin muscles in embryos and larvae. These results clearly demonstrated that the 2.1kb 5'-flanking region of MYH(M743)(-)(2) contains essential cis-regulatory sequences for myogenesis that are conserved among torafugu, zebrafish and medaka.
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