Abstract
ABSTRACTIntroduction: The activation of free fatty acid receptor 1 (FFAR1) induces insulin secretion in a glucose-dependent manner, and thereby is considered as an attractive anti-diabetic target. The clinical studies provided a lot of evidence that FFAR1 agonists improved glucose control in T2DM without the risk of hypoglycemia. The field of FFAR1 agonists is extremely competitive with many patent applications filed in recent years identifying potent candidates.Area covered: The present review summarizes patent applications (2016–2019) filing for FFAR1 modulators, including FFAR1 partial/full agonists, atypical agonists, and multiple target agonists, along with in vitro and in vivo evaluation.Expert opinion: The clinical studies of FFAR1 agonists have proved their potential for the improvement of glucose control. However, there are a few issues still to be solved in this field since TAK-875 terminated in Phase III studies due to liver toxicity. The biggest challenge on the development of FFAR1 agonists may not be the identification of a highly potent compound, but finding out the exact mechanisms of hepatotoxicity and avoid it. Moreover, the further exploration of chemical spaces on FFAR1 full agonists and multi-targeted agonists, as well as corresponding clinical studies, will be expected and might open up new directions in this field.
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