title: Modification of isolation and culture of human retinal pigment epithelial cells.
abstract: OBJECTIVE
  To modify the isolation of human retinal pigment epithelial (RPE) cells and to increase the purification and production of cultured RPE cells.
  
  
  METHODS
  The human eyecups were fixed on a rubber holder. After digestion by trypsin, RPE cells were collected, then cultured and identified by morphology, immunohistochemistry and electron microscopy.
  
  
  RESULTS
  The cultured RPE cells grew actively in the early stage with transparent nucleus and abundant melanin particles in cytoplasm. These cells were positive in DOPA oxidase reaction and in anti-pancytokeratin antibody staining. Cellular microvilli and tight junctions could be seen through transmission electron microscopy.
  
  
  CONCLUSIONS
  We developed a rubber holder to fix the eyecup. Using this holder, more and purer cultured RPE cells can be obtained. These cultured RPE cells are similar to those in vivo in morphology and immunohistochemical staining.
authors.affiliation: Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou 510060, China.
authors.forename: J
authors.initials: J
authors.lastname: Zheng
authors.forename: Y
authors.initials: Y
authors.lastname: Guo
authors.forename: X
authors.initials: X
authors.lastname: Jing
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: G
authors.initials: G
authors.lastname: Feng
mesh_terms: D002469:Cell Separation; D002478:Cells, Cultured; D006801:Humans; D010857:Pigment Epithelium of Eye / Q000166:cytology* / Q000648:ultrastructure