Atg4B-IN-2 is a potent competitive Atg4B inhibitor with Ki value of 3.1 μM, also possesses declining PLA2 inhibitory potency, IC50s of 11 μM and 3.5 μM for Atg4B and PLA2, respectively. Atg4B-IN-2 enhances the anticancer activity of anti-castration-resistant prostate cancer drugs via autophagy inhibition[1].
MeOSuc-AAPV-CMK (Elastase Inhibitor III) is an elastase inhibitor. MeOSuc-AAPV-CMK also inhibits cathepsin G and proteinase 3.MeOSuc-AAPV-CMK blocks the cleavage of adiponectin by leukocyte elastase[1].
JNJ-10311795 (RWJ-355871), a potent dual inhibitor of neutrophil cathepsin G (Ki = 38 nM) and mast cell chymase (Ki = 2.3 nM), exhibits noteworthy antiinflammatory activity[1].
Balicatib(AAE-581) is a potent and selective inhibitor of cathepsin K; 10-100 fold more potent in cell-based enzyme occupancy assays than against cathepsin B, L, and S.IC50 value:Target: cathepsin KThe cathepsin K inhibitor AAE-581 (balicatib) as the most advanced of them passed Phase II clinical trials in 2005. Eighty adult female Macaca fascicularis underwent bilateral ovariectomies and were dosed twice daily by oral gavage with balicatib at 0, 3, 10, and 50 mg/kg for 18 months (groups O, L, M, H, respectively). Approximately 1 month after treatment initiation, the 50 mg/kg dose was decreased to 30 mg/kg. Twenty animals underwent sham-ovariectomies (group S). Bone mass was measured at 3-6 month intervals. At 18 months, vertebra and femur were collected for histomorphometry.
Cysteine Protease inhibitor is an inhibitor of cysteine protease. IC50 & Target: Cysteine Protease
Z-Leu-Leu-Leu-fluoromethyl ketone (Z-LLL-FMK) is a cysteine protease inhibitor. Z-Leu-Leu-Leu-fluoromethyl ketone inhibits SARS infection. Z-Leu-Leu-Leu-fluoromethyl ketone also protects mice against a T. crassiceps challenge[1][2].
RO5461111 a highly specific and orally active antagonist of Cathepsin S with IC50s of 0.4 nM (human Cathepsin S) and 0.5 nM (murine Cathepsin S), respectively. RO5461111 can effectively inhibit the activation of antigen-specific T cells and B cells. RO5461111 can improve pulmonary inflammation and lupus nephritis[1][2].
MIV-247 is a selective cathepsin S inhibitor with Kis of 2.1, 4.2 and 7.5 nM for human, mouse and cynomolgus monkey cathepsin S, respectively.
Z-Phe-Arg-pNA is a substrate of Cathepsin L[1].
Aloxistatin (E64d) is a cell-permeable and irreversible broad-spectrum cysteine protease inhibitor.
Cathepsin K inhibitor 2 is a potent inhibitor of cathepsin K. Cathepsin K, Cat K is a cysteine protease expressed under the control of CTSK gene and closely related to osteoporosis, whose main function is to hydrolyze collagen. Cathepsin K inhibitor 2 has the potential for the research of osteoarthfitis (extracted from patent WO2021147882A1, compound 78)[1].
E 64c is a derivative of naturally occurring epoxide inhibitor of cysteine proteases, a Calcium-activated neutral protease (CANP) inhibitor and a very weak irreversible cathepsin C inhibitor.
N-Ethylmaleimide (NEM) is a cysteine protease inhibitor[1]. N-ethylmaleimide specific inhibits phosphate transport in mitochondria[2].
VBY-825 is a novel, reversible cathepsin inhibitor with high potency against cathepsins B, L, S and V.IC50 value: Target: 130/250/250/330/2.3/4.7 nM(Ki for cathepsin S/L/ZV/Bhumanized-rabbit cathepsin K/cathepsin F) [1]VBY-825 is a potent inhibitor of the assayed cathepsins and its potency against at least one cathepsin, cathepsin S, extends across species relevant for pharmacology studies, specifically mouse. 10 mg/kg/day dose of VBY-825 achieves a trough plasma concentration >200nM, which is well above that required for full inhibition of the intracellular activity of cathepsins B, F, K, L, S and V in both mouse and human cell lines.
6,6′-Dihydroxythiobinupharidine is a cysteine proteases inhibitor. 6,6′-Dihydroxythiobinupharidine can enhance DNA cleavage mediated by human topoisomerase IIα and IIβ ~8-fold and ~3-fold, respectively[1][2].
JPM-OEt is a broad spectrum cysteine cathepsin inhibitor. JPM-OEt binds covalently in the active site, and irreversibly inhibits the cysteine cathepsin family. Antitumor activity[1][2].
Papain inhibitor (Glycylglycyl-L-tyrosyl-L-arginine) acts as an effective competitive inhibitor to papain, with a Ki of 9 μM at pH 6.2[1].
SQ 32602 is a cathepsin E inhibitor.
Z-FG-NHO-Bz is a selective cathepsin inhibitor[1].
Z-Arg-Arg-AMC is a selective substrate of cathepsin B[1].
Leupeptin hemisulfate is a reversible, competitive serine/cysteine protease inhibitor.
K777 is a potent, orally active and irreversible cysteine protease inhibitor. K777 is also a potent CYP3A4 inhibitor with an IC50 of 60 nM and a selective CCR4 antagonist featuring the potent chemotaxis inhibition. K777 irreversibly inhibits Cruzain, the major cysteine protease of Trypansoma cruzi, and cathepsins B and L. K777 is a broad-spectrum antiviral by targeting cathepsin-mediated cell entry. K777 inhibits SARS-CoV and EBOV pseudovirus entry with IC50 values of 0.68 nM and 0.87 nM, respectively[1][2][3].
Relacatib (SB-462795) is a novel, potent, and orally active inhibitor of human cathepsins K, L, and V with Ki values of 41 pM, 68 pM, and 53 pM, respectively. Relacatib inhibits endogenous cathepsin K in situ in human osteoclasts and human osteoclast-mediated bone resorption with IC50 values of 45 nM and 70 nM, respectively. Relacatib inhibits bone resorption in vitro in human tissue as well as in cynomolgus monkeys in vivo[1][2].
Cathepsin inhibitor 1 (compound 25) is a potent and selective inhibitor of Cathepsin, with pIC50s of 7.9, 6.7, 6.0, 5.5 and 5.2 for CatL, CatL2, CatS, CatK, and CatB, respectively[1].
LY 3000328 is a potent and selective Cathepsin S (Cat S) inhibitor with IC50s of 7.7 and 1.67 nM for hCat S and mCat S, respectively.
Cysteine protease inhibitor-2 is a cysteine protease inhibitor extracted from patent US20070032499A1, compound 12. Cysteine protease inhibitor-2 inhibits the cells growth of DCT116 and PC3 cells with GI50 values of 6.5 μM and 4.4 μM, respectively[1].
Z-Arg-Arg-pNA is a substrate for cathepsin B and can be used to detect this enzyme activity[1].
Ac-Glu-Asp(EDANS)-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Gly-Lys(DABCYL)-Glu-NH2 is a cathepsin D substrate, that can be used for cathepsin D FRET assay[1].