Summer Student Research Program Project Description FACULTY SPONSOR’S NAME AND DEGREE: Sergei Kotenko, Ph.D. PHONE: (973) 972 - 3134 DEPARTMENT AND INTERNAL MAILING ADDRESS: Biochemistry; CC-H1228 E-MAIL: kotenkse@umdnj.edu PROJECT TITLE (200 Characters max): Generation and use of interleukin-10 inhibitors for cancer vaccination HYPOTHESIS: Many drugs and methods targeting tumors for destruction are constantly being developed and in trials for their effectiveness. However, it is unlikely that a single drug equally effective in fighting different cancers would be finally created, particularly because even a single tumor often represents a pool of cells which have accumulated different multiple mutations. The immune system, on the other hand, is the army of “universal soldiers” which ideally should be able to deal with any type of cancer. In the case of cancers, however, the immune system is not able to handle it on its own and several strategies have been developed to help the immune system to combat the disease. One of these strategies, the use of therapeutic cancer vaccines, or so called active specific immunotherapies, was designed to activate the immune system to treat existing tumors or prevent tumor recurrence. We think a successful ant-tumor immunotherapy should combine two treatment modalities: activation of immune cells by immunostimulatory cytokines such as interferons (IFNs) and inhibition of immunosuppressive cytokines such as interleukin-10 (IL-10). PROJECT DESCRIPTION (Include design, methodology, data collection, techniques, data analysis to be employed and evaluation and interpretation methodology) We recently demonstrated that melanoma cells that were modified to produce IFN-lambda demonstrated reduced tumorigenicity in mouse model of melanoma growth. Using soluble IL-10 receptor molecules we now would like to create a specific antagonist for murine IL-10 and test whether combined delivery of IFN-lambda and an IL-10 inhibitor will further reduce tumorigenicity of melanoma cells. With the use of gene engineering a student will create a unique heterodimeric soluble IL-10 receptor molecule. The ability of this molecule to inhibit murine IL-10 will be tested in various in vitro experiments. An expression plasmid encoding this molecule will be transfected into mouse B16 melanoma cells and clones expressing the molecule will be selected and later tested for their ability to form tumors in mice. Long term objectives of the research are to treat and/or prevent cancer through the enhancement of protective anticancer immunity and creation of cancer vaccines. SPONSOR’S MOST RECENT PUBLICATIONS RELEVANT TO THIS RESEARCH: Kotenko, S.V., Gallagher, G., Baurin, V.V., Lewis-Antes, A., Shen, M., Shah, N.K., Langer, J.A., Sheikh, F., Dickensheets, H., and Donnelly, R.P. (2003) Interferon-λs mediate antiviral protection through a unique class II cytokine receptor complex. Nat. Immunol. 4, 69-77 Lasfar, A., Lewis-Antes, A., Smirnov, S.V., Anantha, S., Abushahba, W., Tian, B., Reuhl, K. Dickensheets, H., Donnelly, R.P., Raveche, E. and Kotenko, S.V. (2006) Characterization of the Mouse IFN- Ligand-Receptor System: IFN-λs Exhibit Anti-Tumor Activity against B16 Melanoma. Cancer Res., 66, 4468-4477 IS THIS PROJECT SUPPORTED BY EXTRAMURAL FUNDS? Yes or No Summer Student Research Program Project Description (IF YES, PLEASE SUPPLY THE GRANTING AGENCY’S NAME) THIS PROJECT IS: Clinical Laboratory Behavioral Other THIS PROJECT EMPLOYS RADIOISOTOPES THIS PROJECT INVOLVES THE USE OF ANIMALS PENDING APPROVED IACUC PROTOCOL # THIS PROJECT INVOLVES THE USE OF HUMAN SUBJECTS PENDING APPROVED IRB PROTOCOL # M WHAT WILL THE STUDENT LEARN FROM THIS EXPERIENCE? The student will get familiar with cancer research, learn about animal models of tumor growth and immunotherapy of cancer. He//she will acquire experience in following lab techniques: cloning, expression vectors, cell culture procedure (growth and propagation of mammalian cells, transfection and clone selection), gel shift and flow cytometry assays.