December 2002
Volume 43, Issue 13
Free
ARVO Annual Meeting Abstract  |   December 2002
Regulation of the Rat Recoverin Gene in vivo and in Primary Cell Cultures
Author Affiliations & Notes
  • AM Achyuthan
    Ophthalmology Univ of Oklahoma Hlth Sci Ctr Oklahoma City OK
  • EH Budi
    Oklahoma City OK
  • R Elias
    Oklahoma City OK
  • M Cardenas
    Oklahoma City OK
  • W Cao
    Oklahoma City OK
  • JF McGinnis
    Oklahoma City OK
  • Footnotes
    Commercial Relationships   A.M. Achyuthan, None; E.H. Budi, None; R. Elias , None; M. Cardenas , None; W. Cao , None; J.F. McGinnis , None. Grant Identification: CR: None. Support: NIH grants EY 06085, 13050 and 12190, a Jules and Doris Stein Professorship from
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 1446. doi:
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      AM Achyuthan, EH Budi, R Elias, M Cardenas, W Cao, JF McGinnis; Regulation of the Rat Recoverin Gene in vivo and in Primary Cell Cultures . Invest. Ophthalmol. Vis. Sci. 2002;43(13):1446.

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Abstract

Abstract: : Purpose:To characterize the regulation of the recoverin gene in vivo and in cell culture. Methods:The rat recoverin protein was analyzed during the first three weeks of development in vivo and in culture using Western immunoblot techniques. Immunofluorescence microscopy was used to quantitate the appearance of recoverin positive and rhodopsin positive cells in culture. Rat recoverin cDNA was cloned from isolated retina RNA using RT- PCR and Invitrogen's TOPO cloning kit. A 200 bp region of the 5' untranslated end of the rat recoverin gene was amplified from genomic DNA, isolated and sequenced. The cDNA and 5' end of rat recoverin were compared to those of the human and mouse gene using the Multalin program. Results: The developmental appearance of recoverin in culture parallels that which occurs in vivo. Recoverin positive cells appear earlier than rhodopsin positive cells and are present in higher numbers. The isolated rat recoverin DNA has 98 % identity to the mouse retinal recoverin gene and the 23kDa protein has 202 amino acids with 98.5 % identity to the mouse recoverin protein. The putative regulatory elements, identified in the mouse and human recoverin genes, are also present in the rat gene. Conclusion:The primary cell cultures of dissociated rat retina mirror the in vivo developmental expression of the recoverin gene and the presence of identical regulatory elements in the rat, mouse and human recoverin genes support the validity of the analysis of the rodent recoverin genes as models for the human gene.

Keywords: 476 molecular biology • 554 retina • 556 retina: neurochemistry 
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