T CELL FOCUSED CANCER VACCINES IN MURINE TUMOR MODELS

描述：（申请人的摘要）六分之一的人将死于癌症。 免疫系统的系统性、回忆能力和精确的特异性 系统使得免疫疗法成为癌症治疗的一个有吸引力的前景。 肝细胞癌、宫颈癌、各种白血病和 淋巴瘤都提出了病毒病因。 病毒编码的肿瘤特异性 抗原使病毒相关肿瘤成为免疫治疗的强候选者。 最近的研究已经描述了类猿猴病毒40（SV 40）的存在。 基因序列和蛋白质（特别是大肿瘤抗原：SV 40 Tag）在人类骨肉瘤、胶质母细胞瘤、室管膜瘤和恶性肿瘤中的作用 胸膜间皮瘤（MPM），证明SV 40与某些 人类恶性肿瘤 促进人类临床 SV 40相关人类恶性肿瘤的免疫治疗方案， 拟议的研究将采用SV 40小鼠肿瘤系统来评估 CTL转移疗法和基于肽的疫苗的功效 在体内靶向表达SV 40标签的肿瘤的免疫应答。 简言之， SV 40标签特异性CTL将通过用以下物质免疫Balb/c小鼠来产生： SV 40标签基因构建体和表位特异性通过使用 选择的代表潜在CTL的H-2d限制性合成肽 SV 40标签上的表位。这些CTL将用于检查 过继性转移的T细胞，以保护免受肿瘤攻击， 同基因小鼠。 此外，将检查所选合成肽的 在体内主动诱导保护性肿瘤免疫的能力。 这项研究的完成将提供有关积极的有价值的信息， SV 40标签表位特异性肿瘤破坏性免疫诱导 体内CTL。 此外，使用鼠SV 40产生的信息 肿瘤模型将加速试剂和临床试验的开发 旨在检查SV 40相关的SV 40标签特异性免疫疗法 人类恶性肿瘤

DESCRIPTION: (Applicant's Abstract) One in six people will die of cancer. the systemic nature, recall ability and exquisite specificity of the immune system makes immunotherapy an attractive prospect for cancer treatment. Hepatocellular carcinoma, cervical carcinoma, various leukemias and lymphomas all have proposed viral etiologies. Viral encoded tumor specific antigens make viral associated tumors strong candidates for immunotherapy. Recent studies have described the presence of simian virus 40 (SV40)-like gene sequences and proteins (specifically the large tumor antigen: SV40 Tag) in human osteosarcomas, glioblastomas, ependymomas and malignant pleural mesotheliomas (MPM), demonstrating SV40 association with certain human malignancies. To facilitate the development of human clinical protocols for the immunotherapy of SV40 associated human malignancies, the proposed study will employ an SV40 murine tumor system to evaluate the efficacy of CTL transfer therapies and peptide based vaccines designed to target an immune response to SV40 Tag expressing tumors in vivo. Briefly, SV40 Tag specific CTL will be generated by immunization of Balb/c mice with SV40 Tag gene constructs and the epitope specificity determined by using selected H-2d restricted synthetic peptides representing potential CTL epitopes on SV40 Tag. These CTL will be utilized to examine the ability of adoptively transferred T cells to protect against tumor challenge in syngeneic mice. Further, selected synthetic peptides will be examined for the ability to actively induce protective tumor immunity in vivo. Completion of this study will provide valuable information on the active induction of tumor destructive immunity involving SV40 Tag-epitope specific CTL in vivo. Moreover, the information generated using the murine SV40 tumor model will expedite the development of reagents and clinical trials designed to examine SV40 Tag specific immunotherapies for SV40 associated human malignancies.