Establishment of immortalized Copenhagen rat prostate endothelial cell fines

K. Yamazaki, J. E. Lehr, J. S. Rhim, K. J. Pienta

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Since the introduction of culture methods for umbilical vein endothelial cells, many successful attempts for culturing endothelial cells have been reported. The successful establishment of immortalized cell lines of organ specific endothelium, however, has been rare. Primary cultured endothelial cells isolated from the Copenhagen rat prostate were immortalized by infection with an Adenovirus-12 SV40 hybrid virus. Two immortal cell lines of Copenhagen rat prostate endothelium were established and designated YPEN-1 and YPEN-2. The established cell lines have continued to proliferate more than 80 population doublings and have not undergone senescence. They stain positively for but are nonproducers of SV4O0 T-antigen and grow in a monolayer with a cobblestone appearance. They demonstrate Dil-Ac-LDL uptake as an endothelial marker. YPEN-1 and YPEN-2 cells exhibit positive staining for endothelin and MRC OX-43 and express Integrin a6β1 and Integrin β3 on their plasma membrane and demonstrate tube formation in Matrigel. Doubling times of YPEN- 1 and YPEN-2 are 26 hours and 21 hours, respectively. Genetically, YPEN- 1 and YPEN-2 are both diploid. These cell lines of rat prostate endothelial origin should be useful for studying angiogenesis and its inhibition.

Original languageEnglish (US)
Pages (from-to)421-425
Number of pages5
JournalIn Vivo
Issue number5
StatePublished - 1995
Externally publishedYes


  • Adenovirus-12 SV40 hybrid virus
  • Copenhagen rat
  • Immortalization
  • Prostate endothelial cell

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology


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