Viral-related Information in Oncornavirus-lik Particles Isolated from Cultures of Marrow Cells from Leukemic Patients in Relapse and Remission

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 1975 Feb 1

PMID 164662

Citations 15

Authors

T W Mak

S Kurtz

J Manaster

D Housman

Affiliations

Soon will be listed here.

Abstract

Characterization of ribonucleic acid content of particles released from cultures of marrow cells of leukemic patients indicates the presence of RNA molecules of size and base sequence characteristic of oncornarviruses. Seventeen marrow samples obtained from leukemic patients in relapse or in a chronic phase of the disease yielded particles containing high-molecular-weight RNA with a sedimentation velocity (about 70 S) similar to that obtained for murine oncornavirus RNA. Eight of nine marrow samples from non-leukemic patients did not yield detectable high-molecular weight RNA. Among patients in firm hematological remission, three of three samples from patients with acute lymphoblastic leukemia and three of nine samples from patients with acute myeloblastic leukemia were positive for high-molecular-weight RNA. The base sequence of the RNA in particles was characterized by synthesizing complementary (3-H)DNA in an endogenous reaction and hybridizing to excess RNA from known oncornaviruses. Hybridization of 40-60% of input complementary DNA to simian sarcoma virus RNA was detected. No monology was detected with an avian oncornavirus (Rous sarcoma virus) while an intermediate level of homology (10-30%) was detected in hybridization to murine sarcoma virus (Kirsten) and murine leukemia viruses (Rauscher, Moloney, and Gross).

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References

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