Ras Inhibitor

NSC 23766 trihydrochloride is an inhibitor of Rac1 activation.

ML141 (CID-2950007) is a potent, allosteric, selective and reversible non-competitive inhibitor of Cdc42 GTPase. ML141 inhibits Cdc42 wild type and Cdc42 Q61L mutant with EC₅₀s of 2.1 and 2.6 μM, respectively. ML141 shows low micromolar potency and selectivity against other members of the Rho family of GTPases (Rac1, Rab2, Rab7). ML141 do not show cytotoxicity in multiple cell lines.

CID-1067700 (ML282) is a pan GTPase inhibitor, and competitively inhibits Ras-related in brain 7 (Rab7) with a K_i of 13 nM.

Rhosin hydrochloride is a potent, specific RhoA subfamily Rho GTPases inhibitor. Rhosin hydrochloride specifically binds to RhoA to inhibit RhoA-GEF interaction with a K_d of ~ 0.4 uM, and does not interact with Cdc42 or Rac1, nor the GEF, LARG. Rhosin hydrochloride induces cell apoptosis. Rhosin hydrochloride promotes stress resiliency through enhancing D1-MSN plasticity and reducing hyperexcitability.

XRP44X inhibits Ras-induced transcription activation with the IC₅₀ of 10 nM. XRP44X inhibits activation of the Ras-Erk-1/2 pathway by FGF-2. XRP44X is an inhibitor of Ras/Erk activation of Elk3 that also affects microtubules.

Broussoflavonol F is a potent dual inhibitor of the HER2-RAS-MEK-ERK signaling pathway and mushroom tyrosinase with an IC₅₀ value of 82.3 μM. Broussoflavonol F downregulates the expression of RAS, HER2, phosphorylated BRAF, phosphorylated MEK and phosphorylated Erk proteins. Broussoflavonol F induces cell cycle arrest and apoptosis, and exhibits cytotoxicity in colon cancer cells. Broussoflavonol F inhibits endothelial proliferation, migration and tube formation, suppresses subintestinal vascular development, and reduces the mRNA levels of angiogenesis-associated genes.Broussoflavonol F can be used for colon cancer research.

MCP110 is an inhibitor of Ras/Raf-1 interaction. MCP110 blocks the interaction of Ras with Raf. MCP110 disrupts this interaction might can be used for the research of human tumors.

NSC 23766 is a cell-permeable, reversible and specific inhibitor of Rac GTPase, used for cancer treatment.

EHT 1864 is an inhibitor of Rac family small GTPases. EHT 1864 directly binds and impairs the ability of this small GTPase to engage critical downstream effectors required for growth transformation. The K_d values are 40, 50, 60, and 230 nM for Rac1, Rac1b, Rac2 and Rac3, respectively. EHT 1864 also potently inhibits other Rac-dependent transformation processes, Tiam1- and Ras-mediated growth transformation. EHT 1864 prevents Aβ 40 and Aβ 42 production in vivo. EHT 1864 dependently suppresses the release of migrasomes from podocytes induced by LPS, PAN, or HG.

CASIN is a selective GTPase Cdc42 inhibitor with an IC₅₀ of 2 uM. CASIN can be used for the research of cancer.

Grassofermata is a dual Arf1/Arf6 activation inhibitor. ADP ribosylation factors (Arfs) are members of the Arf family of GTP-binding proteins of the Ras superfamily.

EHop-016 is a potent and selective Rac GTPase Rac1 and Rac3 inhibitor. EHop-016 inhibits Rac1 activity with an IC₅₀ of 1.1 μM in MDA-MB-435 cells. EHop-016 inhibits Vav2 interaction with Rac, Rac-activated PAK1, lamellipodia formation, and cell migration.

Nexinhib20 is an inhibitor that targets the interactions of Rab27a-JFC1 (IC₅₀: 2.6 μM) and Rac-1-GTP. Nexinhib20 can inhibit neutrophil exocytosis, adhesion, and β2 integrin activation, and has anti-inflammatory activity. Nexinhib20 can be used in the research of diseases such as systemic inflammation and myocardial ischemia-reperfusion injury.

Rhosin is a potent, specific RhoA subfamily Rho GTPases inhibitor, which specifically binds to RhoA to inhibit RhoA-GEF interaction with a K_d of ~ 0.4 uM, and does not interact with Cdc42 or Rac1, nor the GEF, LARG. Rhosin induces cell apoptosis. Rhosin promotes stress resiliency through enhancing D1-MSN plasticity and reducing hyperexcitability.

CCG-1423 is an inhibitor of Rho/MRTF/SRF pathway. CCG-1423 shows activities in several cancer cells. CCG-1423 is a promising lead compound for the development of novel pharmacologic tools, and it can be used for the research of cancer and diabetes.

Ibetazol is a Importin β1 (KPNB1) inhibitor and nucleocytoplasmic transport disruptor. Ibetazol binds covalently to Cys585 of Importin β1, blocks both Importin β1-mediated direct transport and Importin α-dependent nuclear import processes, without affecting transport mediated by other nucleocytoplasmic transport proteins. Ibetazol induces cytoplasmic accumulation of Importin α1, and inhibits nuclear import of substrates carrying nuclear localization signals (NLS), including the NLS-cMyc reporter gene, RelA/p65 and SREBP1. Ibetazol triggers spindle malformation and chromosome misalignment by disrupting the mitotic function of Importin β1. Ibetazol inhibits the proliferation of cells expressing wild-type Importin β1. Ibetazol has a high activity-cytotoxicity window, lacks intrinsic fluorescence, and acts rapidly on nucleocytoplasmic transport processes. Ibetazol serves as a tool compound for investigating nuclear import processes specifically mediated by Importin β1.

Salirasib is a Ras inhibitor that inhibits specifically both oncogenically activated Ras and growth factor receptor-mediated Ras activation, resulting in the inhibition of Ras-dependent tumor growth.

BBO-10203 is a potent inhibitor of PI3Kα and KRAS^G12C, selectively and covalently binding to Cys242 in the RAS-Binding Domain of PI3Kα, and inhibiting both the GTP-bound and GDP-bound states of KRAS^G12C with an IC₅₀ of 0.031 nM and an EC₅₀ of 0.02 nM. BBO-10203 disrupts the interaction between RAS isoforms and PI3Kα, leading to the inhibition of RAS-mediated PI3Kα activation, and reduces pERK expression, cell growth, and induces G₁ arrest and apoptosis. BBO-10203 can be used for the research of breast cancer, colorectal cancer, and non-small cell lung cancer.

LUNA18 is an orally-available cyclic peptide KRAS and ERK inhibitor. LUNA18 phosphorylates ERK and AKT and decreases cell proliferation in RAS-mutated cancer cells. LUNA18 exhibits RAS signal inhibition and potent anti-cancer activities through inhibiting interaction between RAS and guanine nucleotide exchange factors (GEFs) in a mouse xenograft model. LUNA18 shows significant cellular efficacy against cell lines with KRAS genetic alterations, such as colon cancer, stomach cancer, non-small cell lung cancer and pancreaticcancer.

Manumycin A is a polyketide antibiotic and an inhibitor of thioredoxin reductase 1 (TrxR-1). Manumycin A can inhibit the growth of breast cancer cells and exert its anti-tumor activity through LC3. Manumycin A can downregulate the release of pro-inflammatory cytokines in human monocytes stimulated by TNF α, and has potential anti-inflammatory activity. Manumycin A can inhibit the Ras/Raf/ERK1/2 signaling and hnRNP H1 in castration resistant prostate cancer cells to suppress exosome biogenesis and secretion.