Safranal inhibits NLRP3 inflammasome activation by preventing ASC oligomerization

Copyright © 2021 Elsevier Inc. All rights reserved..

NLRP3 inflammasome is involved in several chronic inflammatory diseases. The inflammatory effect of the NLRP3 inflammasome is executed through IL-1β and IL-18. Therefore, IL-1β is one of the primary targets in chronic inflammatory conditions. However, current treatment regimens are dependent on anti- IL-1β biologicals. The therapies targeting IL-1β through inhibition of NLRP3 inflammasome are thus being actively explored. We identified safranal, a small molecule responsible for the essence of saffron as a potential inhibitor of the NLRP3 inflammasome. Safranal significantly suppressed the release of IL-1β from ATP stimulated J774A.1 and bone marrow-derived macrophages (BMDMs) by regulating CASP1 and CASP8 dependent cleavage of pro-IL-1β. Safranal markedly suppressed the expression of NLRP3 and its ATPase activity. Safranal treatment enhanced the expression of NRF2, whereas, si-RNA mediated silencing of Nrf2 abrogated the anti-NLRP3 effect of safranal. Furthermore, safranal inhibited ASC oligomerization and formation of ASC specks. Safranal also displayed anti-NLRP3 activity in multiple mice models. Treatment of animals with safranal reduced the production of IL-1β in ATP elicited peritoneal inflammation, MSU induced air pouch inflammation, and MSU injected foot paw edema in mice. Thus, our data projects safranal as a potential preclinical drug candidate against NLRP3 inflammasome triggered chronic inflammation.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:423

Enthalten in:

Toxicology and applied pharmacology - 423(2021) vom: 15. Juli, Seite 115582

Sprache:

Englisch

Beteiligte Personen:

Gupta, Mehak [VerfasserIn]
Wani, Abubakar [VerfasserIn]
Ahsan, Aitizaz Ul [VerfasserIn]
Ali, Mehboob [VerfasserIn]
Chibber, Pankaj [VerfasserIn]
Singh, Surjeet [VerfasserIn]
Digra, Sanjeev K [VerfasserIn]
Datt, Manish [VerfasserIn]
Bharate, Sandip B [VerfasserIn]
Vishwakarma, Ram A [VerfasserIn]
Singh, Gurdarshan [VerfasserIn]
Kumar, Ajay [VerfasserIn]

Links:

Volltext

Themen:

4393FR07EA
ASC
CARD Signaling Adaptor Proteins
Caspase-1
Cyclohexenes
IL-1β
Journal Article
Macrophages
NLR Family, Pyrin Domain-Containing 3 Protein
NLRP3 inflammasome
NLRP3 protein, human
Pycard protein, mouse
Research Support, Non-U.S. Gov't
Saffron
Safranal
Terpenes

Anmerkungen:

Date Completed 22.06.2021

Date Revised 22.06.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.taap.2021.115582

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM325692033