Cysltr2, encoding the G protein-coupled receptor cysteinyl-leukotriene receptor 2, is involved in multiple biological functions. Cysteinyl leukotrienes (CysLTs) can bind to CysLTR2, activating an inflammatory response. It is part of signaling pathways related to inflammation and may also be involved in G-protein-coupled receptor-mediated signaling. Understanding its function is crucial for diseases related to inflammation and abnormal cell growth [3].

In a study on atherosclerosis, genetic or pharmacological inhibition of Cysltr2 alleviated ceramide-induced atherosclerosis aggravation, suggesting that Cysltr2 plays a role in the process of ceramide-aggravated atherosclerosis. In CYSLTR2 -mutant uveal melanoma, the CysLTR2 -L129Q receptor is a constitutively active mutant strongly driving Gq/11 signaling pathways while escaping β -arrestin-mediated downregulation [1,2].

In conclusion, Cysltr2 is important in inflammation-related signaling and disease development. Its inhibition can alleviate atherosclerosis, and in uveal melanoma, its mutant form has distinct signaling characteristics. Gene -knockout or -knockdown models in mice for Cysltr2 have been valuable in revealing its role in these disease conditions, providing insights for potential therapeutic strategies.