The role of monocytes and macrophages in inflammatory and immune responses has yet to be characterized at the molecular level. Although it is clear that activated macrophages an monocytes release a large number of biological mediators at the site of inflammation, the effect of these mediators upon lymphocytes, fibroblasts, endothelial and possibly other cells remains to be determined. A single pluripotent monokine, Interleukin 1 (IL 1), has been demonstrated to affect the inflammatory process at several stages. Although Interleukin 1 has been extensively investigated, it has not been purified to homogeneity in a biologically active form. In addition, monoclonal antibodies to IL 1, which are required to measure IL 1 in biological fluids, to affinity purify IL 1, and to isolate polysomal mRNA for gene cloning, have yet to be developed. Once the primary sequence of IL 1 has been determined, it will be possible to predict antigenic regions to select possible sequences for nuceotide probes specific for IL 1 coding m RNA, and to indicate possible amino acid sequences for antagonists of IL 1 which may be potential anti-inflammatory and anti arthritic agents. It is proposed to determine the primary structure of human IL 1 purified to homogeneity by SDS-polyacrylamide gel electrophoresis. (2) To prepare homogeneously purified human IL 1 which retains biological activity. (3) To prepare monoclonal antibodies and heteranisera to human IL 1. (4) To use the abovementioned antibodies to develop ELISA assays which can quantitate IL 1 levels in complex bodily fluids, and to prepare affinity reagents which can remove IL 1 from these fluids. (5) To continue biological studies using homogeneously purified, biologically active IL 1 to unequivocally establish that a single molecule elevates fever, induces fibroblast proliferation stimulates collagenase release from fibroblasts, stimulates acute phase reactants when injected in vivo, induces B and T lymphocyte proliferation and granulopoeisis, and possibly affects vascular permeability.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project (R01)
Project #
5R01CA038043-03
Application #
3176051
Study Section
Allergy and Immunology Study Section (ALY)
Project Start
1984-07-01
Project End
1987-06-30
Budget Start
1986-07-01
Budget End
1987-06-30
Support Year
3
Fiscal Year
1986
Total Cost
Indirect Cost
Name
University of Texas MD Anderson Cancer Center
Department
Type
Hospitals
DUNS #
001910777
City
Houston
State
TX
Country
United States
Zip Code
77030
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