Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Radioimmunotherapy with alpha-particle-emitting immunoconjugates

Journal Article · · Science (Washington, D.C.); (United States)
Alpha particles are energetic short-range ions whose higher linear energy transfer produces extreme cytotoxicity. An ..cap alpha..-particle-emitting radioimmunoconjugate consisting of a bismuth-212-labeled monoclonal immunoglobulin M specific for the murine T cell/neuroectodermal surface antigen Thy 1.2 was prepared. Analysis in vitro showed that the radioimmunoconjugate was selectively cytotoxic to a Thy 1.2/sup +/ EL-4 murine tumor cell line. Approximately three bismuth-212-labeled immunoconjugates per target cell reduced the uptake of (/sup 3/H)thymidine by the EL-4 target cells to background levels. Mice inoculated intraperitoneally with EL-4 cells were cured of their ascites after intraperitoneal injection of 150 microcuries of the antigen-specific radioimmunoconjugate, suggesting a possible role for such conjugates in intracavitary cancer therapy. 18 references, 3 figures.
Research Organization:
Harvard Medical School, Boston, MA (USA)
DOE Contract Number:
FG02-86ER60460; W-31109-ENG-38
OSTI ID:
6954800
Journal Information:
Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 240; ISSN SCIEA
Country of Publication:
United States
Language:
English