Translational Research in Multiple Myeloma

多发性骨髓瘤的转化研究

• 批准号: 6665446
• 负责人: CAROL A HUFF
• 金额: $ 13.69万
• 依托单位: JOHNS HOPKINS UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-27 至 2007-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6665446
• 关键词: bone marrow transplantation; cell cycle; clinical research; cytotoxicity; human subject; immunotherapy; interferon alpha; interleukin 6; lymphocyte; multiple myeloma; patient oriented research; vaccines

DESCRIPTION (provided by applicant): With the possible exception of allogeneic transplantation, multiple myeloma remains an incurable illness due to pan-resistance to cytotoxic agents. Unfortunately, most patients are ineligible for allogeneic transplantation due to advanced age, comorbid illness or extensive prior therapy. As such, novel approaches are needed to treat this disease. The objective of this proposal is to develop novel clinical treatments for myeloma by translating promising strategies from the laboratory into the clinic and to enable Dr. Huff to become an independent translational investigator in the field of multiple myeloma, included in this career development proposal is formal training in the theory and methods of clinical investigation working towards a Masters of Health Science degree at the Johns Hopkins School of Public Health and Hygiene concurrent with translational research initiatives in multiple myeloma. Clinical results suggest that the cytotoxic conditioning regimen used in allogeneic transplantation plays a limited role in controlling myeloma, while the immunologic anti-tumor effect associated with graft-versus-host appears to have strong anti-myeloma activity. As such, we are developing a new clinical trial, utilizing nonmyeloablative BMT for myeloma that will limit the toxicity of the conditioning regimen and highlight the allogeneic graft-versus-myeloma effect. Based on encouraging preliminary data from the laboratory, we plan to incorporate anti-myeloma vaccines into the post-transplant donor lymphocyte infusions that are a key component of non-myeloablative BMT. For many patients, even a nonmyeloablative allo BMT will not be possible. Thus, other treatment approaches are needed. Preliminary data from our laboratory suggest that cytokine-mediated differentiation is another possible strategy. There are a variety of growth factors and cytokines which have activity in myeloma. IL-6 appears to be the most important. Interferon- clearly has clinical anti-tumor activity in myeloma, although its role in the management of multiple myeloma remains controversial. Interferon's exact mechanism of action is unknown; one of its multiple effects, however, is an anti-proliferative activity through induction of a G1 cell cycle arrest. The net effect of growth factors and cytokines on malignant growth is determined by a balance of their pleiotropic effects on tumor cell self-renewal, survival, and differentiation. The preferential enhancement of tumor cell self-renewal and/or survival could hasten tumor progression; conversely, a predominant or selective induction of differentiation would exhaust the neoplastic clone. Our preliminary data demonstrate that agents, like interferon, that inhibit cell cycling preferentially enhance the differentiation effects of IL-6 against myeloma, as well as block its effects on tumor cell proliferation.

描述（由申请方提供）：由于对细胞毒性药物的泛耐药性，多发性骨髓瘤仍然是一种无法治愈的疾病，可能除同种异体移植外。 不幸的是，大多数患者由于高龄、共病或广泛的既往治疗而不适合进行同种异体移植。 因此，需要新的方法来治疗这种疾病。 该提案的目的是通过将有前途的策略从实验室转化为临床来开发骨髓瘤的新型临床治疗方法，并使Huff博士成为多发性骨髓瘤领域的独立翻译研究者，包括在这个职业发展的建议是正式培训的理论和方法的临床调查工作的健康科学硕士学位在约翰霍普金斯学校的公共卫生和卫生与多发性骨髓瘤的转化研究计划同步进行。 临床结果表明，异基因移植中使用的细胞毒性预处理方案在控制骨髓瘤方面发挥的作用有限，而与移植物抗宿主相关的免疫抗肿瘤作用似乎具有较强的抗骨髓瘤活性。 因此，我们正在开发一项新的临床试验，利用非清髓性骨髓移植治疗骨髓瘤，这将限制预处理方案的毒性，并突出同种异体移植物抗骨髓瘤效应。 基于实验室令人鼓舞的初步数据，我们计划将抗骨髓瘤疫苗纳入移植后供体淋巴细胞输注，这是非清髓性BMT的关键组成部分。 对于许多患者，甚至非清髓性同种异体BMT也是不可能的。 因此，需要其他治疗方法。 我们实验室的初步数据表明，精氨酸介导的分化是另一种可能的策略。 有多种生长因子和细胞因子在骨髓瘤中具有活性。 IL-6是最重要的。干扰素-在骨髓瘤中明显具有临床抗肿瘤活性，尽管其在多发性骨髓瘤管理中的作用仍存在争议。 干扰素的确切作用机制尚不清楚;然而，它的多种作用之一是通过诱导G1细胞周期停滞而具有抗增殖活性。 生长因子和细胞因子对恶性生长的净效应由它们对肿瘤细胞自我更新、存活和分化的多效性效应的平衡决定。 肿瘤细胞自我更新和/或存活的优先增强可以加速肿瘤进展;相反，主要或选择性诱导分化将耗尽肿瘤克隆。 我们的初步数据表明，抑制细胞周期的药物，如干扰素，优先增强IL-6对骨髓瘤的分化作用，以及阻断其对肿瘤细胞增殖的影响。