Table 3 Small molecules/agents as therapeutics against NLRP3 inflammasome activation

From: An update on the regulatory mechanisms of NLRP3 inflammasome activation

Small molecule/ agent

Chemical class

Interaction with target

Ref.

Targeting NLRP3 NACHT domain

 MCC950/CRID3

Diarylsulfonylurea compound

Binds to Walker B motif of NACHT ATPase

243

 CY-09

CFTR(inh)-172 analog

Binds to Walker A motif of NACHT ATPase

249

 OLT1177

β-sulfonyl nitrile compound

Directly targets ATPase and inhibits NLRP3 inflammasome oligomerization

251

 BOT-4-one

Benzoxathiole derivative

Alkylates NLRP3 to impair ATPase activity

252

 Tranilast

Tryptophan metabolite

Binds to NACHT domain and inhibits NLRP3 oligomerization

254

Targeting NEK7-NLRP3 interaction

 Oridonin

Diterpenoid purified from Rabdosia rubescens

Irreversibly binds to NLRP3 Cys279 and inhibits NLRP3–NEK7 interaction

255

 Rg3

Ginsenoside extracted from Panax ginseng

Abrogates NEK7-NLRP3 interaction, and subsequently inhibits NLRP3-ASC interaction, ASC oligomerization, and speckle formation

256

 C1-27 (& 25)

Benzenesulfonamide derivative

Inhibits GSTO1-1, which is NEK7 deglutathionylating enzyme

257,258

 Artemisinin

Sesquiterpene lactone isolated from Artemisia annua

Targets and inhibits interaction between NEK7 and NLRP3

259

Targeting PYD

 KN3014

Piperidine-containing compound

Directly targets PYD and inhibits the interaction between NLRP3 and ASC

260

 β-carotene

Provitamin A carotenoid

Binds to NLRP3 PYD

261

 ASCPYD/H2-H3 peptide

Peptide corresponding to H2-H3 segment of ASC PYD

Binds to NLRP3 PYD and selectively inhibits NLRP3 inflammasome

262