Inventors:
Harvey I. Cantor - Boston MA
Gary Nabel - Cambridge MA
Assignee:
Dana-Farber Cancer Institute - Boston MA
International Classification:
C07K 328, C12N 500, C12N 502, C12N 138
Abstract:
A family of growth factors, methods of making and using such growth factors in in vivo treatment of living mammalian cells, and products incorporating such growth factors, are disclosed.
The growth factors were isolated from the supernatant fluid obtained by incubation of inducer T-cells in the presence of a suitable antigen or mitogen. The growth factors disclosed include a 14 Kd polypeptide which stimulates growth of both T-cells and B-cells, a 50 Kd polypeptide which stimulates B-cells to multiply and secrete immunoglobulins, and a 45 Kd growth factor which stimulates secretion of immunoglobulins by B-cells and stimulates rapid growth of certain mast cells, stem cells and certain other types of cells.