5-HT4 receptor (5-hidroksitriptaminski receptor 4) je protein koji je kod ljudi kodiran HTR4genom.[1][2]
Ovaj gen je član familije serotoninskih receptora, koji su G protein spregnuti receptori koji stimulišu cAMP produkciju u responsu na vezivanje serotonina (5-hidroksitriptamina). To je glikolizirani transmembranski protein koji funkcioniše u perifernom i centralnom nervnom sistemu gde modulara otpuštanje raznih neurotransmitera. Postoji više transkriptnih varijanti koje kodiraju proteine sa distinktnim C-terminalnim sekvencama.[3]
Internalizacija je specifična za pojedine izoforme.[6]
Ligandi
Postoji nekoliko lekova kaji deluju na 5-HT4 kao selektivni agonisti. Oni se koriste u naučnim istraživanjima i kliničkoj medicini. Neki od lekova koji deluju kao 5-HT4 agonisti su isto tako aktivni kao 5-HT3 antagonisti, npr, mosaprid, metoclopramid, renzaprid i zacoprid.[7]SB-207,145 radio obeležen sa ugljenikom-11 se koristi kao radioligand za 5-HT4 ispitivanja pozitronskom emisionom tomografijom na životinjama[8] i u humanim ispitivanjima.[9].
^Katarina Varnäs, Christer Halldin, Victor W. Pike; Håkan Hall (2003). „Distribution of 5-HT4 receptors in the postmortem human brain–an autoradiographic study using [125]SB 207710”. European Neuropsychopharmacology. 13 (4): 228—234. PMID12888181. S2CID27945284. doi:10.1016/S0924-977X(03)00009-9.CS1 одржавање: Вишеструка имена: списак аутора (веза)
^Mnie-Filali, O.; Amraei, M. G.; Benmbarek, S.; Archer-Lahlou, E.; Peñas-Cazorla, R.; Vilaró, M. T.; Boye, S. M.; Piñeyro, G. (2010). „Serotonin 4 receptor (5-HT4R) internalization is isoform-specific: Effects of 5-HT and RS67333 on isoforms a and B”. Cellular Signalling. 22 (3): 501—509. PMID19922792. doi:10.1016/j.cellsig.2009.11.004.
^Kornum, B. R.; N. M. Lind; N. Gillings; Marner, Lisbeth; F. Andersen; Gitte Moos Knudsen (2008). „Evaluation of the novel 5-HT(4) receptor PET ligand [(11)C]SB207145 in the Gottingen minipig”. Journal of Cerebral Blood Flow and Metabolism. 29 (1): 186—196. PMID18797470. S2CID16196384. doi:10.1038/jcbfm.2008.110.
Cecilie Löe Licht, Changes in the 5-HT4 receptor in animal models of depression and antidepressant treatment, PhD thesis, Faculty of Health Sciences, University of Copenhagen. Submitted 2008 October.
Cichon S, Kesper K, Propping P, Nöthen MM (1998). „Assignment of the human serotonin 4 receptor gene (HTR4) to the long arm of chromosome 5 (5q31-q33).”. Mol. Membr. Biol. 15 (2): 75—8. PMID9724925. doi:10.3109/09687689809027521.
Claeysen, S; Sebben M; Becamel C; et al. (1999). „Novel brain-specific 5-HT4 receptor splice variants show marked constitutive activity: role of the C-terminal intracellular domain.”. Mol. Pharmacol. 55 (5): 910—20. PMID10220570.
Bender, E; Pindon A; van Oers I; et al. (2000). „Structure of the human serotonin 5-HT4 receptor gene and cloning of a novel 5-HT4 splice variant.”. J. Neurochem. 74 (2): 478—89. PMID10646498. S2CID33817190. doi:10.1046/j.1471-4159.2000.740478.x.
Bach, T; Syversveen T; Kvingedal, AM; et al. (2001). „5HT4(a) and 5-HT4(b) receptors have nearly identical pharmacology and are both expressed in human atrium and ventricle.”. Naunyn Schmiedebergs Arch. Pharmacol. 363 (2): 146—60. PMID11218067. S2CID27504006. doi:10.1007/s002100000299.
López-Rodríguez ML; Murcia M; Benhamú B; et al. (2002). „Computational model of the complex between GR113808 and the 5-HT4 receptor guided by site-directed mutagenesis and the crystal structure of rhodopsin.”. J. Comput. Aided Mol. Des. 15 (11): 1025—33. PMID11989623. S2CID23478175. doi:10.1023/A:1014895611874.
Ohtsuki, T; Ishiguro H; Detera-Wadleigh SD; et al. (2003). „Association between serotonin 4 receptor gene polymorphisms and bipolar disorder in Japanese case-control samples and the NIMH Genetics Initiative Bipolar Pedigrees.”. Mol. Psychiatry. 7 (9): 954—61. PMID12399948. S2CID21064320. doi:10.1038/sj.mp.4001133.
Norum JH, Hart K, Levy FO (2003). „Ras-dependent ERK activation by the human G(s)-coupled serotonin receptors 5-HT4(b) and 5-HT7(a).”. J. Biol. Chem. 278 (5): 3098—104. PMID12446729. doi:10.1074/jbc.M206237200.
„5-HT4”. IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology. Архивирано из оригинала 05. 06. 2016. г. Приступљено 1. 7. 2018.