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Discovery of PD-1/PDL-1 inhibitors from marine microbial natural products

从海洋微生物天然产物中发现PD-1/PDL-1抑制剂

基本信息

批准号：
10669189
负责人：
William Fenical
金额：
$ 18.58万
依托单位：
UNIVERSITY OF CALIFORNIA, SAN DIEGO
依托单位国家：
美国
项目类别：
财政年份：
2020
资助国家：
美国
起止时间：
2020-07-14 至 2025-06-30
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10669189
关键词：
Antibodies Antineoplastic Agents Aquaculture Bacteria Binding Binding Proteins Biological Assay Biomedical Research Buffers Calorimetry Cancer Biology Cell Line Cell Survival Cells Chemicals China Chinese Hamster Ovary Cell Chinese Traditional Medicine Collaborations Collection Complex Component of the National Cancer Institute Development Dimethyl Sulfoxide Drug Costs Dyes Evaluation Fermentation Goals Human Immune checkpoint inhibitor Immune system Immunoprecipitation Immunotherapy In Vitro Institution Interferometry Kinetics Lymphocyte Lymphocyte Activation Malignant Neoplasms Measurement Measures Melanoma Cell Modeling Molecular Mus Natural Products Oceanography Oceans PD-1 inhibitors PD-1/PD-L1 Pharmaceutical Preparations Pharmacology Pharmacotherapy Pharmacy Schools Promega Proteins Protocols documentation Rattus Research Personnel Resources Sampling Solid Source Spectrometry, Mass, Electrospray Ionization Structure System T-Cell Activation T-Lymphocyte Techniques Testing Time Titrations Treatment Efficacy United States National Institutes of Health Universities Validation Yin antagonist cancer immunotherapy chemical resource combat deep ocean drug candidate effective therapy experimental study fungus improved inhibitor instrumentation large scale production marine marine natural product melanoma melting microbial microorganism milligram mouse model novel therapeutics professor programmed cell death ligand 1 programmed cell death protein 1 programs response screening small molecule small molecule therapeutics tumor growth

项目摘要

Project Summary and Relevance Project Summary: The broad, long-term objective of this collaborative project is the discovery of small molecule therapeutics that can replace antibodies as inhibitors of the PD-1 checkpoint. To date, no small molecules have been approved for this application, although the benefits of small molecules over biologicals in drug therapy is clear. This project capitalizes on the existence of a large collection (up to 30,000 samples) of structurally unique marine microbial metabolites that have shown to be a solid source for the development of anticancer agents. This collection, available at the Scripps Institution of Oceanography, UCSD, from Dr. William Fenical will be interfaced with the cancer biology lab of Dr. Yin Lu at the Nanjing University of Chinese Medicine, to screen for selective inhibitors using a commercially-available cell-based bioassay for PD-1 binding. When active metabolites are discovered, they will be screened in a variety of secondary assays to show selective binding. Finally, verified PD-1binding inhibitors will be produced in multi-milligram amounts by large-scale cultivation and provided to Dr. Lu for evaluation in mouse and rat xenograph models of select cancers. Relevance: This project aims to improve on the immunotherapy of cancer by discovering small molecules that selectively bind to the protein PD-1, which when bound to PDL-1 is responsible for the deactivation of the immune system. Replacing the current antibody (protein) therapy with a small molecule drug is likely to improve treatment efficacy and will clearly reduce drug cost.

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