The primary objective of the laboratory is the study of protease regulation in the circulation, a process primarily mediated by binding of protease to inhibitors followed by clearance from the circulation. Studies this year have involved clearance of (1) alpha-macroglobulin (alpha 2-M) complexes with trypsin, thrombin and plasmin as well as with methylamine (MeNH2) which alters alpha 2-M in a manner analogous to proteases; (2) antithrombin III (At III) complexes with thrombin. Moreover, during the current year, the laboratory has begun studying the in vitro binding of alpha 2-M complexes to macrophages since the route of clearance of complexes from the circulation is via the reticulo-endothelial system (RES). Recently, the applicant has begun a series of studies with cis-dichloro-diameplatinum (II) (cis-DDP) and alpha 2-M. These studies were undertaken since cis-DDP is an important antitumor drug which possesses two amine groups. It was felt that cis-DDP might react with alpha 2-M in a manner analogous to MeNH2.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Research Project (R01)
Project #
5R01HL024066-10
Application #
3337489
Study Section
Hematology Subcommittee 2 (HEM)
Project Start
1979-07-01
Project End
1992-06-30
Budget Start
1988-07-01
Budget End
1989-06-30
Support Year
10
Fiscal Year
1988
Total Cost
Indirect Cost
Name
Duke University
Department
Type
Schools of Medicine
DUNS #
071723621
City
Durham
State
NC
Country
United States
Zip Code
27705
Jockheck-Clark, Angela R; Bowers, Edith V; Totonchy, Mariam B et al. (2010) Re-examination of CD91 function in GRP94 (glycoprotein 96) surface binding, uptake, and peptide cross-presentation. J Immunol 185:6819-30
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