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* [[α-Methyl-5-HT]] - moderately selective over 5-HT<sub>2A/C</sub>
* [[α-Methyl-5-HT]] - moderately selective over 5-HT<sub>2A/C</sub>
* [[6-APB]]
* [[6-APB]]
* [[psilocin]] - 23x greater selectivity for human cloned 5-HT<sub>2B</sub> receptors over 5-HT<sub>2A</sub>.<ref name="pdsp.med.unc.edu">PDSP Ki database, University of North Carolina at Chapel Hill. http://pdsp.med.unc.edu/pdsp.php</ref>
* [[psilocin]] - 23x greater selectivity for human cloned 5-HT<sub>2B</sub> receptors over 5-HT<sub>2A</sub>.<ref name="pdsp.med.unc.edu">PDSP Ki database, University of North Carolina at Chapel Hill. {{cite web|url=http://pdsp.med.unc.edu/pdsp.php |title=Archived copy |accessdate=2014-03-04 |deadurl=yes |archiveurl=https://web.archive.org/web/20131108013656/http://pdsp.med.unc.edu/pdsp.php |archivedate=2013-11-08 |df= }}</ref>


;Non-selective
;Non-selective

Revision as of 04:42, 30 September 2016

HTR2B
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesHTR2B, 5-HT(2B), 5-HT2B, 5-HT-2B, 5-hydroxytryptamine receptor 2B
External IDsOMIM: 601122; MGI: 109323; HomoloGene: 55492; GeneCards: HTR2B; OMA:HTR2B - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_000867
NM_001320758

NM_008311

RefSeq (protein)

NP_000858
NP_001307687

NP_032337

Location (UCSC)Chr 2: 231.11 – 231.13 MbChr 1: 86.03 – 86.04 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

5-Hydroxytryptamine receptor 2B (5-HT2B) also known as serotonin receptor 2B is a protein that in humans is encoded by the HTR2B gene.[5][6] 5-HT2B is a member of the 5-HT2 receptor family that binds the neurotransmitter serotonin (5-hydroxytryptamine, 5-HT).

Function

The 5-HT2 receptors (of which the 5-HT2B receptor is a subtype) mediate many of the central and peripheral physiologic functions of serotonin. Cardiovascular effects include contraction of blood vessels and shape changes in platelets; central nervous system effects include neuronal sensitization to tactile stimuli and mediation of some of the effects of hallucinogenic substituted amphetamines.

The 5-HT2B receptor subtype is involved in:

  • CNS: presynaptic inhibition, behavioural effects[7]
  • Vascular: pulmonary vasoconstriction[8]
  • Cardiac: The 5-HT2B receptor regulates cardiac structure and functions as demonstrated by the abnormal cardiac development observed in 5-HT2B receptor null mice.[9] The 5-HT2B receptor stimulation can also lead to pathological proliferation of cardiac valves fibroblasts,[10] which with chronic overstimulation of 5-HT2B can lead to a severe valvulopathy. Moreover, 5-HT2B receptors were recently shown to be overexpressed in human failing heart and antagonists of 5-HT2B receptors were uncovered to prevent both angiotensin II or beta-adrenergic agonist-induced pathological cardiac hypertrophy in mouse.[11][12][13]
  • Serotonin transporter: 5-HT2B receptors regulate serotonin release via the serotonin transporter, and are important both to normal physiological regulation of serotonin levels in blood plasma,[14] and with the abnormal acute serotonin release produced by drugs such as MDMA.[7] Surprisingly however 5-HT2B receptor activation appears to be protective against the development of serotonin syndrome following elevated extracellular serotonin levels,[15] despite its role in modulating serotonin release.

Clinical significance

5-HT2B receptors have also been strongly implicated in drug-induced valvular heart disease.[16][17][18] In this context, it is generally considered to be an antitarget.

The structure of the 5-HT2B receptor was recently solved in complex with the valvulopathogenic drug ergotamine.[19]

Ligands

As of 2009, few highly selective 5-HT2B receptor ligands have been discovered, although numerous potent non-selective compounds are known, particularly agents with concomitant 5-HT2C binding. Research in this area has been limited due to the cardiotoxicity of 5-HT2B agonists, and the lack of clear therapeutic application for 5-HT2B antagonists, but there is still a need for selective ligands for scientific research.[20]

Agonists

Selective
Non-selective

Antagonists

Possible applications

5-HT2B antagonists have previously been proposed as treatment for migraine headaches, and RS-127,445 was trialled in humans up to Phase I for this indication, but development was not continued.[36] More recent research has focused on possible application of 5-HT2B antagonists as treatments for chronic heart disease.[37][38] Research claims serotonin 5-HT2B receptors have effect on liver regeneration.[39]

See also

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000135914Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000026228Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ "Entrez Gene: HTR2B 5-hydroxytryptamine (serotonin) receptor 2B".
  6. ^ Schmuck K, Ullmer C, Engels P, Lübbert H (Mar 1994). "Cloning and functional characterization of the human 5-HT2B serotonin receptor". FEBS Letters. 342 (1): 85–90. doi:10.1016/0014-5793(94)80590-3. PMID 8143856.
  7. ^ a b Doly S, Valjent E, Setola V, Callebert J, Hervé D, Launay JM, Maroteaux L (Mar 2008). "Serotonin 5-HT2B receptors are required for 3,4-methylenedioxymethamphetamine-induced hyperlocomotion and 5-HT release in vivo and in vitro". The Journal of Neuroscience. 28 (11): 2933–40. doi:10.1523/JNEUROSCI.5723-07.2008. PMID 18337424.
  8. ^ Launay JM, Hervé P, Peoc'h K, Tournois C, Callebert J, Nebigil CG, Etienne N, Drouet L, Humbert M, Simonneau G, Maroteaux L (Oct 2002). "Function of the serotonin 5-hydroxytryptamine 2B receptor in pulmonary hypertension". Nature Medicine. 8 (10): 1129–35. doi:10.1038/nm764. PMID 12244304.
  9. ^ Nebigil CG, Hickel P, Messaddeq N, Vonesch JL, Douchet MP, Monassier L, György K, Matz R, Andriantsitohaina R, Manivet P, Launay JM, Maroteaux L (Jun 2001). "Ablation of serotonin 5-HT(2B) receptors in mice leads to abnormal cardiac structure and function". Circulation. 103 (24): 2973–9. doi:10.1161/01.cir.103.24.2973. PMID 11413089.
  10. ^ Elangbam CS, Job LE, Zadrozny LM, Barton JC, Yoon LW, Gates LD, Slocum N (Aug 2008). "5-hydroxytryptamine (5HT)-induced valvulopathy: compositional valvular alterations are associated with 5HT2B receptor and 5HT transporter transcript changes in Sprague-Dawley rats". Experimental and Toxicologic Pathology. 60 (4–5): 253–62. doi:10.1016/j.etp.2008.03.005. PMID 18511249.
  11. ^ Jaffré F, Callebert J, Sarre A, Etienne N, Nebigil CG, Launay JM, Maroteaux L, Monassier L (Aug 2004). "Involvement of the serotonin 5-HT2B receptor in cardiac hypertrophy linked to sympathetic stimulation: control of interleukin-6, interleukin-1beta, and tumor necrosis factor-alpha cytokine production by ventricular fibroblasts". Circulation. 110 (8): 969–74. doi:10.1161/01.CIR.0000139856.20505.57. PMID 15302781.
  12. ^ Monassier L, Laplante MA, Jaffré F, Bousquet P, Maroteaux L, de Champlain J (Aug 2008). "Serotonin 5-HT(2B) receptor blockade prevents reactive oxygen species-induced cardiac hypertrophy in mice". Hypertension. 52 (2): 301–7. doi:10.1161/HYPERTENSIONAHA.107.105551. PMID 18591460.
  13. ^ Jaffré F, Bonnin P, Callebert J, Debbabi H, Setola V, Doly S, Monassier L, Mettauer B, Blaxall BC, Launay JM, Maroteaux L (Jan 2009). "Serotonin and angiotensin receptors in cardiac fibroblasts coregulate adrenergic-dependent cardiac hypertrophy". Circulation Research. 104 (1): 113–23. doi:10.1161/CIRCRESAHA.108.180976. PMID 19023134.
  14. ^ Callebert J, Esteve JM, Hervé P, Peoc'h K, Tournois C, Drouet L, Launay JM, Maroteaux L (May 2006). "Evidence for a control of plasma serotonin levels by 5-hydroxytryptamine(2B) receptors in mice". The Journal of Pharmacology and Experimental Therapeutics. 317 (2): 724–31. doi:10.1124/jpet.105.098269. PMID 16461587.
  15. ^ Diaz SL, Maroteaux L (Sep 2011). "Implication of 5-HT(2B) receptors in the serotonin syndrome". Neuropharmacology. 61 (3): 495–502. doi:10.1016/j.neuropharm.2011.01.025. PMID 21277875.
  16. ^ Rothman RB, Baumann MH, Savage JE, Rauser L, McBride A, Hufeisen SJ, Roth BL (Dec 2000). "Evidence for possible involvement of 5-HT(2B) receptors in the cardiac valvulopathy associated with fenfluramine and other serotonergic medications". Circulation. 102 (23): 2836–41. doi:10.1161/01.CIR.102.23.2836. PMID 11104741.
  17. ^ Fitzgerald LW, Burn TC, Brown BS, Patterson JP, Corjay MH, Valentine PA, Sun JH, Link JR, Abbaszade I, Hollis JM, Largent BL, Hartig PR, Hollis GF, Meunier PC, Robichaud AJ, Robertson DW (Jan 2000). "Possible role of valvular serotonin 5-HT(2B) receptors in the cardiopathy associated with fenfluramine". Molecular Pharmacology. 57 (1): 75–81. PMID 10617681.
  18. ^ Roth BL (Jan 2007). "Drugs and valvular heart disease". The New England Journal of Medicine. 356 (1): 6–9. doi:10.1056/NEJMp068265. PMID 17202450.
  19. ^ PDB: 4IB4​; Wacker D, Wang C, Katritch V, Han GW, Huang XP, Vardy E, McCorvy JD, Jiang Y, Chu M, Siu FY, Liu W, Xu HE, Cherezov V, Roth BL, Stevens RC (May 2013). "Structural features for functional selectivity at serotonin receptors". Science. 340 (6132): 615–9. doi:10.1126/science.1232808. PMID 23519215.
  20. ^ Schuhmacher M (2007). "[Chiral arylmethoxytryptamines as 5-HT2B-receptor antagonists: synthesis, analysis and in-vitro pharmacology] (German)" (PDF). Ph.D. Dissertation. University of Regensburg: 6–17. Retrieved 2008-08-11. {{cite journal}}: Cite journal requires |journal= (help)
  21. ^ a b c Porter RH, Benwell KR, Lamb H, Malcolm CS, Allen NH, Revell DF, Adams DR, Sheardown MJ (Sep 1999). "Functional characterization of agonists at recombinant human 5-HT2A, 5-HT2B and 5-HT2C receptors in CHO-K1 cells". British Journal of Pharmacology. 128 (1): 13–20. doi:10.1038/sj.bjp.0702751. PMC 1571597. PMID 10498829.
  22. ^ Kennett GA, Trail B, Bright F (Dec 1998). "Anxiolytic-like actions of BW 723C86 in the rat Vogel conflict test are 5-HT2B receptor mediated". Neuropharmacology. 37 (12): 1603–10. doi:10.1016/S0028-3908(98)00115-4. PMID 9886683.
  23. ^ a b PDSP Ki database, University of North Carolina at Chapel Hill. "Archived copy". Archived from the original on 2013-11-08. Retrieved 2014-03-04. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)CS1 maint: archived copy as title (link)
  24. ^ Huang XP, Setola V, Yadav PN, Allen JA, Rogan SC, Hanson BJ, Revankar C, Robers M, Doucette C, Roth BL (Oct 2009). "Parallel functional activity profiling reveals valvulopathogens are potent 5-hydroxytryptamine(2B) receptor agonists: implications for drug safety assessment". Molecular Pharmacology. 76 (4): 710–22. doi:10.1124/mol.109.058057. PMC 2769050. PMID 19570945.
  25. ^ a b Setola V, Hufeisen SJ, Grande-Allen KJ, Vesely I, Glennon RA, Blough B, Rothman RB, Roth BL (Jun 2003). "3,4-methylenedioxymethamphetamine (MDMA, "Ecstasy") induces fenfluramine-like proliferative actions on human cardiac valvular interstitial cells in vitro". Molecular Pharmacology. 63 (6): 1223–1229. doi:10.1124/mol.63.6.1223. PMID 12761331.
  26. ^ Ray TS (2010). Manzoni OJ (ed.). "Psychedelics and the human receptorome". PLOS ONE. 5 (2): e9019. doi:10.1371/journal.pone.0009019. PMC 2814854. PMID 20126400.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  27. ^ Görnemann T, Hübner H, Gmeiner P, Horowski R, Latté KP, Flieger M, Pertz HH (Mar 2008). "Characterization of the molecular fragment that is responsible for agonism of pergolide at serotonin 5-Hydroxytryptamine2B and 5-Hydroxytryptamine2A receptors". The Journal of Pharmacology and Experimental Therapeutics. 324 (3): 1136–45. doi:10.1124/jpet.107.133165. PMID 18096760.
  28. ^ Millan MJ, Gobert A, Lejeune F, Dekeyne A, Newman-Tancredi A, Pasteau V, Rivet JM, Cussac D (Sep 2003). "The novel melatonin agonist agomelatine (S20098) is an antagonist at 5-hydroxytryptamine2C receptors, blockade of which enhances the activity of frontocortical dopaminergic and adrenergic pathways". The Journal of Pharmacology and Experimental Therapeutics. 306 (3): 954–64. doi:10.1124/jpet.103.051797. PMID 12750432.
  29. ^ Hofmann C, Penner U, Dorow R, Pertz HH, Jähnichen S, Horowski R, Latté KP, Palla D, Schurad B (2006). "Lisuride, a dopamine receptor agonist with 5-HT2B receptor antagonist properties: absence of cardiac valvulopathy adverse drug reaction reports supports the concept of a crucial role for 5-HT2B receptor agonism in cardiac valvular fibrosis". Clinical Neuropharmacology. 29 (2): 80–6. doi:10.1097/00002826-200603000-00005. PMID 16614540.
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Further reading

  • "5-HT2B". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology.

This article incorporates text from the United States National Library of Medicine, which is in the public domain.