Appeal No. 94-1696 Application 07/811,129 1. A soluble fusion molecule comprising a first region, having binding specificity for CD11a/CD18, operatively linked to a second region substantially corresponding to an immunoglobulin constant region. 2. The fusion molecule of claim 1, wherein the first region substantially corresponds to an extracellular portion of ICAM-2. 9. A method for activating T cells comprising contacting T cells with a ligand capable of binding to CD3 on said T cells and an effective costimulatory amount of a soluble fusion molecule to activate the T cells, said soluble fusion molecule comprising a first region, having binding specificity for CD11a/CD18, operatively linked to a second region substantially corresponding to an immunoglobulin constant region. The references relied on by the examiner are: Springer, T.A. “Adhesion Receptors of the Immune System,” Nature, vol. 346, pp. 425-434 (1990). Staunton et al., (Staunton), “Functional Cloning of ICAM-2, a Cell Adhesion Ligand for LFA-1 Homologous to ICAM-1,” Nature, vol. 339, pp. 61-64 (1989). Zettlmeissl, et al. (Zettlmeissl), “Expression and Characterization of Human CD4: Immunoglobulin Fusion Proteins,” DNA and Cell Biology, vol. 9, pp. 347-353 (1990). The references relied on by this merits panel are: Altmann et al. (Altmann), “Cotransfection of ICAM-1 and HLA-DR Reconstitutes Human Antigen-Presenting Cell Function in Mouse L Cells,” Nature, vol. 338, pp. 512-514 (1989). Boyd et al. (Boyd), “Intercellular Adhesion 1 (ICAM-1) has a Central Role in Cell-Cell Contact-Mediated Immune Mechanisms,” Proc. Natl. Acad. Sci. USA, vol. 85, pp. 3095-3099 (1988). 2Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007