The purpose of the proposed study is to delineate the immunobiological mechanisms whereby anti-idiotypic antibodies regulate normal and malignant B lymphocytes activity. Three particular problems will be investigated: (1) the properties of anti-idiotypic antibodies that determine their capacity to modulate normal idiotype expression; (2) the contribution of host immune function to the anti-idiotype-induced suppression of idiotype production; and (3) the ability of anti-idiotype reagents to control the growth and differentiation of continuous B lymphoma-like cell lines. To facilitate these studies, our collection of monoclonal anti-idiotypic antibodies will be expanded to include reagents which differ significantly from one another only with respect to isotype, specificity or affinity. A panel of idiotype-positive lymphoma-like lines representing different stages of B cell differentiation (as characterized by cell surface phenotype) will also be produced. The monoclonal antibody reagents will be compared In Vivo using the idiotype system in which A/J mice are challenged with the hapten azophenylarsonate. Comparisons will include the capacity to regulate primary vs. secondary responses, interactions with host NK and ADCC cells. The same monoclonal reagents will be tested In Vivo and In Vitro with regard to their capacity to regulate the growth of the homogeneous B lymphoma lines. In this case, it will be possible to examine membrane events such as patching or capping which occur immediately subsequent to antibody exposure. Overall, these investigations should contribute to the basic understanding of B cell activation and deactivation and should have clinical application with regard to the control of a variety of autoimmune and malignant diseases.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Project (R01)
Project #
5R01AI019892-03
Application #
3129355
Study Section
Allergy and Immunology Study Section (ALY)
Project Start
1983-04-01
Project End
1986-03-31
Budget Start
1985-04-01
Budget End
1986-03-31
Support Year
3
Fiscal Year
1985
Total Cost
Indirect Cost
Name
Boston University
Department
Type
Schools of Medicine
DUNS #
604483045
City
Boston
State
MA
Country
United States
Zip Code
Yamada, K; Spezialetti, R; Marshak-Rothstein, A et al. (1989) Autoantibody in MRL/Mp-lpr/lpr mice. A monoclonal antibody specific for the abnormal T cells from mice bearing the lpr/lpr gene. J Immunol 142:2702-7
Wolfowicz, C B; Sakorafas, P; Rothstein, T L et al. (1988) Oligoclonality of rheumatoid factors arising spontaneously in lpr/lpr mice. Clin Immunol Immunopathol 46:382-95
Perkins, D L; Michaelson, J; Marshak-Rothstein, A (1987) The lpr gene is associated with resistance to engraftment by lymphoid but not erythroid stem cells from normal mice. J Immunol 138:466-9
Perkins, D L; Michaelson, J; Glaser, R M et al. (1987) Selective elimination of non-lpr lymphoid cells in mice undergoing lpr-mediated graft-vs-host disease. J Immunol 139:1406-13
Weissman, D; Parker, D J; Rothstein, T L et al. (1985) Methods for the production of xenogeneic monoclonal antibodies in murine ascites. J Immunol 135:1001-3
Weissman, D; Rothstein, T L; Marshak-Rothstein, A (1985) A rapid method for comparing monoclonal antibodies by limited proteolysis and electrophoresis. Hybridoma 4:329-39