Same Target, Different Therapeutic Outcomes : The Case of CAY10471 and Fevipiprant on CRTh2 Receptor in Treatment of Allergic Rhinitis and Asthma

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OBJECTIVE: Prostaglandin 2 (PGD2) mediated signalling of Chemoattractant Receptorhomologous molecule expressed on Th2 cells (CRTh2) receptor has been implicated in the recruitment of inflammatory cells. This explains the design of highly selective compounds with innate abilities to antagonize PGD2-CRTh2 interactions and prevent pro-inflammatory allergies such as rhinitis and uncontrolled asthma. The development of PGD2-competitive CRTh2 binders; CAY10471 and Fevipiprant represent remarkable therapeutic progress even though they elicit disparate pharmacological propensities despite utilizing the same binding pocket.

METHODS & RESULTS: In this study, we seek to pinpoint the underlying phenomenon associated with differential CRTh2 therapeutic inhibition by CAY10471 and Fevipiprant using membraneembedded molecular dynamics simulation. Findings revealed that the common carboxylate group of both compounds elicited strong attractive charges with active site Arg170 and Lys210. Interestingly, a distinctive feature was the steady occurrence of high-affinity salt-bridges and an Arg170-mediated pi-cation interaction with the tetrahydrocarbozole ring of CAY10471. Further investigations into the active site motions of both ligands revealed that CAY10471 was relatively more stable. Comparative binding analyses also revealed that CAY10471 exhibited higher ΔG, indicating the cruciality of the ring stabilization role mediated by Arg170. Moreover, conformational analyses revealed that the inhibitory activity of CAY10471 was more prominent on CRTh2 compared to Fevipiprant.

CONCLUSIONS: These findings could further advance the strategic design of novel CRTh2 binders in the treatment of diseases related to pro-inflammatory allergies.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:22

Enthalten in:

Combinatorial chemistry & high throughput screening - 22(2019), 8 vom: 17., Seite 521-533

Sprache:

Englisch

Beteiligte Personen:

Issahaku, Abdul R [VerfasserIn]
Agoni, Clement [VerfasserIn]
Soremekun, Opeyemi S [VerfasserIn]
Kubi, Patrick A [VerfasserIn]
Kumi, Ransford O [VerfasserIn]
Olotu, Fisayo A [VerfasserIn]
Soliman, Mahmoud E S [VerfasserIn]

Links:

Volltext

Themen:

2PEX5N7DQ4
Allergic rhinitis
Asthma
CAY 10471
CAY10471
Carbazoles
Chemoattractant Receptor-homologous molecule expressed on Th2 cells (CRTh2)
Fevipiprant
Indoleacetic Acids
Journal Article
PGD2-CRTh2 signaling
PGD2antagonists
Prostaglandin D2 receptor
Pyridines
Receptors, Immunologic
Receptors, Prostaglandin
Sulfonamides
Type 2 inflammation.
XZF106QU24

Anmerkungen:

Date Completed 01.09.2020

Date Revised 01.09.2020

published: Print

Citation Status MEDLINE

doi:

10.2174/1386207322666190919113006

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM301469067