G protein-coupled receptor 35 also known as GPR35 is a G protein-coupled receptor which in humans is encoded by the GPR35gene.[1] Heightened expression of GPR35 is found in immune and gastrointestinal tissues, including the crypts of Lieberkühn.
Although GPR35 is still considered an orphan receptor, there have been attempts to deorphanize it by identifying endogenous molecules that can activate the receptor. All of the currently proposed ligands are either unselective towards GPR35, or they lack high potency, a characteristic feature of natural ligands.[2] The following list includes the most prominent examples:
Zaprinast is currently the gold standard in the biochemical evaluation of novel synthetic GPR35 agonists, because it remains potent in an animal model. Most other known agonists display high selectivity towards the human GPR35 orthologue. This phenomenon is well established for other GPCRs and complicates the development of pharmaceutical drugs.[2][10][11]
Both ML145 and ML144 unfurl their antagonistic activity through inverse agonism. They are, however, highly species-selective, and practically inactive at the rodent receptor orthologues.[13]
↑Wang J, Simonavicius N, Wu X, Swaminath G, Reagan J, Tian H, Ling L (2006). "Kynurenic acid as a ligand for orphan G protein-coupled receptor GPR35". J. Biol. Chem. 281 (31): 22021–8. doi:10.1074/jbc.M603503200. PMID16754668.free fulltext
↑Southern, Craig; Cook, Jennifer M.; Neetoo-Isseljee, Zaynab; Taylor, Debra L.; Kettleborough, Catherine A.; Merritt, Andy; Bassoni, Daniel L.; Raab, William J.; Quinn, Elizabeth; Wehrman, Tom S.; Davenport, Anthony P.; Brown, Andrew J.; Green, Andrew; Wigglesworth, Mark J.; Rees, Steve (2013). "Screening β-Arrestin Recruitment for the Identification of Natural Ligands for Orphan G-Protein–Coupled Receptors". Journal of biomolecular screening. SAGE Publications. 18 (5): 599–609. doi:10.1177/1087057113475480. ISSN1087-0571. PMID23396314.
↑ 7.07.1Yang, Yuhua; Lu, Jenny Ying-Lin; Wu, Xiaosu; Summer, Shamin; Whoriskey, John; Saris, Christiaan; Reagan, Jeff D. (2010). "G-Protein-Coupled Receptor 35 Is a Target of the Asthma Drugs Cromolyn Disodium and Nedocromil Sodium". Pharmacology. S. Karger AG. 86 (1): 1–5. doi:10.1159/000314164. ISSN1423-0313. PMID20559017.
↑Taniguchi Y, Tonai-Kachi H, Shinjo K (2006). "Zaprinast, a well-known cyclic guanosine monophosphate-specific phosphodiesterase inhibitor, is an agonist for GPR35". FEBS Lett. 580 (21): 5003–8. doi:10.1016/j.febslet.2006.08.015. PMID16934253.
↑Gütschow, Michael; Schlenk, Miriam; Gäb, Jürgen; Paskaleva, Minka; Alnouri, Mohamad Wessam; Scolari, Silvia; Iqbal, Jamshed; Müller, Christa E. (2012-04-12). "Benzothiazinones: A Novel Class of Adenosine Receptor Antagonists Structurally Unrelated to Xanthine and Adenine Derivatives". Journal of Medicinal Chemistry. American Chemical Society (ACS). 55 (7): 3331–3341. doi:10.1021/jm300029s. ISSN0022-2623. PMID22409573.
↑ 12.012.1Susanne Heynen-Genel; Russell Dahl; Shenghua Shi; Michelle Sauer; Santosh Hariharan; Eduard Sergienko; Shakeela Dad; Thomas DY Chung; Derek Stonich; Ying Su; Marc Caron; Pingwei Zhao; Mary E Abood; Lawrence S Barak (2010). "Selective GPR35 Antagonists - Probes 1 & 2". PMID21433393. Bookshelf ID NBK50703.
↑Shrimpton AE, Braddock BR, Thomson LL, Stein CK, Hoo JJ (2004). "Molecular delineation of deletions on 2q37.3 in three cases with an Albright hereditary osteodystrophy-like phenotype". Clin. Genet. 66 (6): 537–44. doi:10.1111/j.1399-0004.2004.00363.x. PMID15521982.
↑Okumura S, Baba H, Kumada T, Nanmoku K, Nakajima H, Nakane Y, Hioki K, Ikenaka K (2004). "Cloning of a G-protein-coupled receptor that shows an activity to transform NIH3T3 cells and is expressed in gastric cancer cells". Cancer Sci. 95 (2): 131–5. doi:10.1111/j.1349-7006.2004.tb03193.x. PMID14965362.