Developing macrophage reprogramming mRNA nanocarriers for initial clinical testing

开发用于初始临床测试的巨噬细胞重编程 mRNA 纳米载体

• 批准号: 10601437
• 负责人: Matthias Stephan
• 金额: $ 51.85万
• 依托单位: FRED HUTCHINSON CANCER CENTER
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-04-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10601437
• 关键词: Developing; macrophage; reprogramming; mRNA; nanocarriers

Project Summary Tumor-associated macrophages (TAMs) usually express an M2 phenotype which enables them to perform immunosuppressive and tumor-promoting functions. Reprogramming these TAMs toward an M1 phenotype could thwart their pro-cancer activities and unleash anti-tumor immunity, but current efforts to accomplish this are nonspecific and elicit systemic inflammation. Our group at Fred Hutchinson Cancer Research Center has developed a targeted nanocarrier that can deliver in vitro-transcribed mRNA encoding M1-polarizing transcription factors to reprogram TAMs without causing systemic toxicity. With the goal of designing the first clinical trial for treating chemotherapy-resistant ovarian cancer patients with this nanodrug, we propose here research that will generate the data required for an IND application. Specifically, we will (1) develop a robust protocol for the scaled-up production of genetic macrophage-programming nanoparticles under GMP- conditions so they can be carried forward into large primate and human studies, (2) identify potential infusion reaction risks, with reference to FDA regulations for nanomedicines, and (3) confirm safety of the nanoparticles for clinical use in a large-animal species. We expect the outcome of the proposed research will help propel this approach into clinical practice for the treatment of advanced ovarian cancer, and provide knowledge to design a broad repertoire of nanotherapeutics that genetically reprogram TAMs as a strategy to treat other tumor types.

项目摘要 肿瘤相关的巨噬细胞（TAM）通常表达M2表型，使它们能够执行 免疫抑制和促进肿瘤的功能。将这些TAM重新编程为M1表型 是否可以挫败他们的亲癌活动并释放反肿瘤的免疫力，但目前为实现这一目标而做出的努力 是非特异性的，引起全身炎症。我们在弗雷德·哈钦森癌症研究中心的小组已有 开发了一个有针对性的纳米载体，该纳米载体可以在体外转录的mRNA编码M1偏置 转录因子重新编程TAM而不会引起全身毒性。目的是设计第一个 我们在这里提出了用于治疗这种纳米果的抗化疗卵巢癌患者的临床试验 研究将生成IND应用所需的数据。具体来说，我们将（1）发展一个强大的 GMP-下遗传巨噬细胞纳米颗粒的扩大生产的规定 条件使它们可以进入大型灵长类动物和人类研究，（2）确定潜在的输注 反应风险，参考纳米医学法规，（3）确认纳米颗粒的安全性 用于大动物物种中的临床用途。我们希望拟议的研究的结果将有助于推动这一点 临床实践的方法来治疗晚期卵巢癌，并为设计提供知识 纳米疗法的广泛曲目，该纳米疗法将遗传重新编程为治疗其他肿瘤的策略 类型。