## Abstract High‐temperature passage (40.5°C) increased the incidence of flat variants obtained from Kirsten sarcoma virus transformed BALB/3T3 non‐producer cells from less than 0.1% to 4%. The flat variants had growth properties similar to those of the BALB/3T3 line. The variant lines did not rele
Cell-surface antigens of murine sarcoma-virus-transformed non-producer cells: Further evidence for lack of transplantation immunity
✍ Scribed by Joel S. Greenberger; John R. Stephenson; Tadao Aoki; Stuart A. Aaronson
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- French
- Weight
- 629 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0020-7136
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Previous studies have indicated that cells transformed by murine sarcoma virus (MSV) in the absence of virus production lack detectable transplantation antigens. Recent findings that antibodies to a surface antigen associated with MSV‐transformed cells can be elicited by hyperimmunization, led to the present studies. Attempts were made to detect transplantation immunity to MSV‐transformed cells in animals producing this antibody. Mice, hyperimmunized with an MSV‐transformed non‐producer clone of BALB/3T3, failed to demonstrate a higher resistance than BALB/3T3 hyperimmunized mice to tumor induction by either the homologous non‐producer cell or MSV itself. Under these conditions, both MSV non‐producer cell hyperimmunized tumor‐bearing and non‐tumor‐bearing mice showed antibodies to the MSV‐associated cell surface antigen. Thus, even in mice possessing this antibody, there is no transplantation immunity to MSV non‐producer cells.
📜 SIMILAR VOLUMES
## Abstract Murine sarcoma virus (MSV)‐induced transformed tumor cells, which are releasers and non‐releasers of virus, were investigated by transplantation immunity and a variety of serological assays. Transplantation immunity demonstrated that tumor‐associated transplantation antigens could be de
## Abstract Bone‐marrow cells from two leukemic children were co‐cultivated with the canine thymus cell line A 7573. In early passages, C‐type oncornaviruses were released as detected by extracellular reverse transcriptase assay. Co‐cultivation of the infected canine cells with the non‐producing ce