Episomal DNA of a BK virus variant in a human insulinoma

Episomal DNA of a BK virus variant in a human insulinoma BK virus (BKV) DNA was detected by blot hybridization in a human adenoma of pancreatic islets from patient I.R. BKV DNA was free, and no evidence was found of viral sequences integrated into cellular DNA. Virus was rescued by transfection of human embryonic fibroblasts with tumor DNA. The DNA from rescued virus (BKV‐IR) was different from wild‐type BKV DNA by restriction endonuclease mapping. The genome of BKV‐IR is 235 base pairs (bp) shorter than the genome of wild‐type BKV. This alteration originates from a deletion of approximately 300 bp involving HindIII fragments B and D, and an insertion of 70 bp in the region of HindIII fragment C. Transformation of hamster kidney cells was induced by total tumor DNA as well as by BKV‐IR and BKV‐IR DNA. No antibodies to BKV tumor (T) antigen were detected in the patient's serum by immunofluorescence. The significance of episomal BKV DNA in a human tumor is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Medical Virology Wiley

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Publisher
Wiley
Copyright
Copyright © 1983 Wiley‐Liss, Inc., A Wiley Company
ISSN
0146-6615
eISSN
1096-9071
D.O.I.
10.1002/jmv.1890120105
Publisher site
See Article on Publisher Site

Abstract

BK virus (BKV) DNA was detected by blot hybridization in a human adenoma of pancreatic islets from patient I.R. BKV DNA was free, and no evidence was found of viral sequences integrated into cellular DNA. Virus was rescued by transfection of human embryonic fibroblasts with tumor DNA. The DNA from rescued virus (BKV‐IR) was different from wild‐type BKV DNA by restriction endonuclease mapping. The genome of BKV‐IR is 235 base pairs (bp) shorter than the genome of wild‐type BKV. This alteration originates from a deletion of approximately 300 bp involving HindIII fragments B and D, and an insertion of 70 bp in the region of HindIII fragment C. Transformation of hamster kidney cells was induced by total tumor DNA as well as by BKV‐IR and BKV‐IR DNA. No antibodies to BKV tumor (T) antigen were detected in the patient's serum by immunofluorescence. The significance of episomal BKV DNA in a human tumor is discussed.

Journal

Journal of Medical VirologyWiley

Published: Jan 1, 1983

References

  • Transformation of rabbit kidney cells by BKV (MM) human papovavirus
    Mason, Mason; Takemoto, Takemoto

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