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Comparative Study
. 1978 Jun 15;21(6):762-7.
doi: 10.1002/ijc.2910210614.

Further characterization of a herpesvirus-positive orang-utan cell line and comparative aspects of in vitro transformation with lymphotropic old world primate herpesviruses

H Rabin, R H Neubauer, R F Hopkins 3rd, M Nonoyama
Comparative Study

Further characterization of a herpesvirus-positive orang-utan cell line and comparative aspects of in vitro transformation with lymphotropic old world primate herpesviruses

H Rabin et al. Int J Cancer. .

Abstract

An orang-utan (Pongo pygmaeus) suspension line, CP81, was shown to lack myeloid markers of lysozyme activity an d phagocytosis but to be positive for lymphocytic N-alkaline phosphatase activity, and to release a B-cell-tropic herpesvirus. This herpesvirus, termed Herpesvirus pongo, had 30--40% DNA homology with EBV and was present at 2-3 genome copies per CP-81 cell. Gibbon lymphocytes transformed by H. pongo, Epstein-Barr virus (EBV), and H. papio (of baboon, Papio hamadryas, origin) were found to be virus antigen-positive B cells. Gibbon lymphocytes transformed by H. pongo and EBV and transplanted to nude mice by the intracranial (IC) route (had a 75% and a 45% success rate, respectively), while transplants of similar cells transformed by H. papio were only 10% successful. None of these lines transplanted subcutaneously (SC) nor manifested a high degree of colony formation in 0.33% agarose (less than or equal to 0.5%), Gibbon lymphocytes transformed by H. pongo were hypodiploid while those transformed by EBV or H. papio were diploid. CP-81 cells themselves could be transplanted both IC (100%) and SC (70%) and showed a relatively high degree of colony formation in agarose (6.4-7.6%). B95-8 cells (marmoset, Saguinus oedipus-EBV) could be transplanted IC (66%) but not SC and had a low but significant ability to grow in agarose (1.6%). 594S (baboon, P. hamadryas-H. papio) cells could be transplanted IC (25%) but not SC, and grew to very low levels in agarose (0.1%).

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