Evidence is presented that interleukin 2 (IL-2) is not sufficient to cause the differentiation of primary cytotoxic T lymphocytes (CTL). Sources of IL-2 were compared for their ability to cause proliferation as well as differentiation into CTL. Whereas all factors caused proliferation, only the crude Con A supernatant had cytotoxic T cell differentiation factor (CTDF) activity. Furthermore, factors absorbed with an IL-2-dependent cell line to remove IL-2 still retained CTDF activity. Thus, IL-2 functions to cause clonal expansion of CTL precursors preactivated by antigen or mitogen, but for their differentiation into CTL, an additional factor is required, here called CTDF.
Dissection of the proliferative and differentiative signals controlling murine cytotoxic T lymphocyte responses
H. Wagner,C. Hardt,B. Rouse,M. Rollinghoff,P. Scheurich,K. Pfizenmaier
Published 1982 in Journal of Experimental Medicine
ABSTRACT
PUBLICATION RECORD
- Publication year
1982
- Venue
Journal of Experimental Medicine
- Publication date
1982-06-01
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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