FEBS Letters
Volume 412, Issue 1 , Pages 21-29, 21 July 1997

Inherited retinal degeneration: basic FGF induces phagocytic competence in cultured RPE cells from RCS rats

  • M.J McLaren

      Affiliations

    • Department of Physiology and Biophysics, University of Miami School of Medicine, Miami, FL 33136, USA
    • Corresponding Author InformationCorresponding author. c/o Laboratory of Molecular Genetics, Bascom Palmer Eye Institute, 1638 NW 10th Avenue, Miami, FL 33136, USA. Fax: (305) 667-9929. E-mail: glab@mednet.med.miami.edu
    • Formerly M.J. Irons.
  • ,
  • G Inana

      Affiliations

    • Laboratory of Molecular Genetics, Bascom Palmer Eye Institute, University of Miami School of Medicine, Miami, FL 33136, USA

Received 17 March 1997; received in revised form 28 April 1997

Abstract 

In RCS rats, the retinal pigment epithelium (RPE) is defective in phagocytosis of photoreceptor membranes. We have previously shown reduced expression of basic fibroblast growth factor (bFGF) in the RPE of 7–10-day-old RCS rats. This study using primary RPE cultures from rats of this age demonstrates that the phagocytic defect in the mutant RPE can be overcome by treatment with bFGF, by a mechanism involving gene transcription and that normal RPE phagocytosis, also requiring transcription, is blocked by a bFGF neutralizing antibody. The combined data point to a role for bFGF in the normal mechanism of RPE phagocytosis and the RCS defect.

Keywords:  Basic fibroblast growth factor , RPE cell , Phagocytosis , RCS rat , Inherited retinal degeneration

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PII: S0014-5793(97)00566-8

doi:10.1016/S0014-5793(97)00566-8

FEBS Letters
Volume 412, Issue 1 , Pages 21-29, 21 July 1997