Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA-02114.
Department of Systems Biology, Harvard Medical School, 200 Longwood Ave, Boston, MA-02115.
ChemMedChem. 2024 Oct 1;19(19):e202400416. doi: 10.1002/cmdc.202400416. Epub 2024 Aug 5.
STING agonists are potent enhancers of a pro-inflammatory response and, thus, potentially useful therapeutics. Unfortunately, many agonists developed to date require complex drug delivery formulations and often have poor water solubility, limiting their use for systemic administration. Here, we report the discovery and chemical characterization of lactones of MSA-2 as new STING prodrugs with enhanced properties. We show that these prodrugs form efficient inclusion complexes with tumor myeloid cell targeting cyclodextrin nanoparticles and propose a new mechanism of formation and hydrolysis.
STING 激动剂是一种强烈的促炎反应增强剂,因此具有潜在的治疗作用。不幸的是,迄今为止开发的许多激动剂需要复杂的药物传递配方,并且通常水溶性差,限制了它们用于全身给药。在这里,我们报告了 MSA-2 的内酯作为新型 STING 前药的发现和化学表征,这些前药具有增强的特性。我们表明,这些前药与肿瘤髓样细胞靶向环糊精纳米粒形成有效的包合复合物,并提出了一种新的形成和水解机制。