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发现一类新型苯二氮䓬类 Cbl-b 抑制剂用于增强抗肿瘤免疫

英文原题:Discovery of a Novel Benzodiazepine Series of Cbl-b Inhibitors for the Enhancement of Antitumor Immunity.

查看英文原题

Discovery of a Novel Benzodiazepine Series of Cbl-b Inhibitors for the Enhancement of Antitumor Immunity.

PubMed 2023/11/17(内容时间) ACS Med Chem Lett Q2 · IF 3.9(JCR 2025)

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中文摘要

Casitas B系淋巴瘤原癌基因-b(Cbl-b)是一种RING指E3连接酶,负责抑制T细胞、自然杀伤(NK)细胞和B细胞的活化。在Cbl-b缺陷小鼠中观察到的由T细胞和NK细胞活性升高所产生的强效抗肿瘤活性,证明了我们致力于发现Cbl-b抑制剂的努力是合理的,这些抑制剂可能在免疫肿瘤学中展现出治疗前景,在该领域中免疫系统的激活可以驱动对癌细胞的识别和杀伤。我们开展了一项高通量筛选活动,随后进行了结构辅助的优化,以开发一系列新型苯二氮䓬类强效Cbl-b抑制剂。该系列表现出纳摩尔水平的生化效力以及强效的T细胞活化。这类Cbl-b抑制剂的功能活性通过基于泛素的细胞实验得到了进一步证实。

展开英文摘要原文

Casitas B-lineage lymphoma proto-oncogene-b (Cbl-b) is a RING finger E3 ligase that is responsible for repressing T-cell, natural killer (NK) cell, and B-cell activation. The robust antitumor activity observed in Cbl-b deficient mice arising from elevated T-cell and NK-cell activity justified our discovery effort toward Cbl-b inhibitors that might show therapeutic promise in immuno-oncology, where activation of the immune system can drive the recognition and killing of cancer cells.

We undertook a high-throughput screening campaign followed by structure-enabled optimization to develop a novel benzodiazepine series of potent Cbl-b inhibitors. This series displayed nanomolar levels of biochemical potency, as well as potent T-cell activation. The functional activity of this class of Cbl-b inhibitors was further corroborated with ubiquitin-based cellular assays.

论文信息

作者
Boerth JA、Chinn AJ、Schimpl M、Bommakanti G、Chan C、Code EL、Giblin KA、Gohlke A
单位
Medicinal Chemistry, Research and Early Development, Oncology R&D, AstraZeneca, Waltham, Massachusetts 02451, United States.United States
期刊
ACS medicinal chemistry letters2023 Dec 14
原文标识
PubMed 38116444 · DOI 10.1021/acsmedchemlett.3c00439