Protein Kinase C (19-31), a peptide inhibitor of protein kinase C (PKC), derived from the pseudo-substrate regulatory domain of PKCa (residues 19-31) with a serine at position 25 replacing the wild-type alanine, is used as protein kinase C substrate peptide for testing the protein kinase C activity. Protein kinase C (PKC) is involved in controlling the function of other proteins through the phosphorylation of hydroxyl groups of serine and threonine amino acid residues on these proteins[1][2].
Phorbol 12-myristate 13-acetate (PMA), a phorbol ester, is a commonly used PKC activator.
Mitoxantrone diacetate is a potent topoisomerase II inhibitor. Mitoxantrone diacetate also inhibits protein kinase C (PKC) activity with an IC50 of 8.5 μM. Mitoxantrone diacetate induces apoptosis of B-CLL (B-chronic lymphocytic leukaemia) cells. Mitoxantrone diacetate shows antitumor activity[1][2][3][4]. Mitoxantrone diacetate also has anti-orthopoxvirus activity with EC50s of 0.25 μM and and 0.8 μM for cowpox and monkeypox, respectively[5].
Ro 32-0432 hydrochloride is a potent, selective, ATP-competitive and orally active PKC inhibitor. The IC50 values of Ro 32-0432 hydrochloride for PKCα, PKCβI, PKCβII, PKCγ and PKCε are 9.3 nM, 28 nM, 30 nM, 36.5 nM and 108.3 nM, respectively. Ro 32-0432 hydrochloride is also a selective G protein-coupled receptor kinase 5 (GRK5) inhibitor. Ro 32-0432 hydrochloride prevents T-cell activation and has the potential for chronic inflammatory and autoimmune diseases research[1][2].
Valrubicin is a chemotherapy agent, inhibits TPA- and PDBu-induced PKC activation with IC50s of 0.85 and 1.25 μM, respectively, and has antitumor and antiinflammatory activity.
ζ-Stat trisodium (NSC37044 trisodium) is a specific and atypical PKC-ζ inhibitor, with an IC50 of 5 μM. ζ-Stat trisodium can reduce melanoma cell lines proliferation and induce apoptosis, and has antitumor activity in vitro[1][2].
DL-erythro-Dihydrosphingosine is a potent inhibitor of PKC and phospholipase A2 (PLA2)[1][2].
Protein kinase C substrate is a substrate of Protein kinase C, can be used to detect protein. Protein kinase C is a key regulatory element in signal transduction and exerts its effects by catalysing specific substrate phosphorylation[1].
Sotrastaurin is a potent pan-PKC inhibitor, with Kis of 0.22 nM, 0.64nM, 0.95 nM, 1.8 nM, 2.1 nM and 3.2 nM for PKCθ, PKCβ, PKCα, PKCη, PKCδ and PKCε, respectively.
VTX-27 is a selective protein kinase C θ (PKC θ) inhibitor, with Kis of 0.08 nM and 16 nM for PKC θ and PKC δ.
ZIP is a selective peptide inhibitor of PKMζ. ZIP injections can block the impairment in morphine conditioned place preference induced[1].
Go 6983 is a pan-PKC inhibitor against for PKCα, PKCβ, PKCγ, PKCδ and PKCζ with IC50 of 7 nM, 7 nM, 6 nM, 10 nM and 60 nM, respectively.
CGP60474 is a potent VEGFR-2 inhibitor, with an IC50 of 84 nM, and also an ATP-competitive PKC inhibitor.
CMPD101, is a novel membrane-permeable, small-molecule inhibitor of both GRK2 and GRK3 with IC50s of 18 nM and 5.4 nM. CMPD101 also inhibits ROCK-2 and PKCα (IC50s=1.4 μM and 8.1 μM, respectively)[1].
PS-432 is an allosteric inhibitor of PKCι and PKCζ with IC50 of 16.9 and 18.5 uM, respectively; has no inhibitory activity against PKCα, PKCβ, PKCδ and PKCθ nor the activity of related kinases such as PDK1, PKB/Akt, RSK1, MSK1 and Aurora A; inhibits the proliferation of the lung cancer cell lines A549 (IC50=14.8 ± 4.2 uM) and A427 (IC50=10.4± 0.3 uM) as well as androgen-independent prostate cancer cell line DU145 (IC50 = 20.8 ± 9.0 uM); well tolerated in vivo.
PS315, a derivative of PS48 (HY-15967), is an allosteric PKC inhibitor by binding to the PIF-pocket of aPKC and inducing a displacement of the active site residue Lys111. PS315 inhibits the full-length and catalytic domain constructs of PKCζ (IC50=10 μM) and PKCη (IC50=30 μM). PS315 has anti-cancer activity[1].
6-Deoxyisojacareubin is a PKC inhibitor that inhibits the proliferation of QGY-7703 cells in a concentration-dependent manner. 6-Deoxyisojacareubin is also a natural product that can be obtained from Garcinia nervosa. 6-Deoxyisojacareubin can be used in cancer research[1].
K-252c, a staurosporine analog isolated from Nocardiopsis sp., is a cell-permeable PKC inhibitor, with an IC50 of 2.45 µM. K-252c induces apoptosis in human chronic myelogenous leukemia cancer cells. K-252c also inhibits β-lactamase, chymotrypsin, and malate dehydrogenase[1][2][3].
Cercosporin is produced by a plant pathogen, Cercosporakikuchii, and the elsinochromes, pigments of the elsinoe family of fungi. Cercosporin is a potent photosensitizer with a short activation wavelength, mostly suitable for superficial photodynamic therapy (PDT) treatments, especially when it is necessary to avoid perforations[1].Cercosporin contains the perylenequinone structural features necessary to PKC activity with an IC50 of 0.6-1.3 μM[2].
Staurosporine is a potent and non-selective inhibitor of protein kinases with IC50s of 6 nM, 15 nM, 2 nM, and 3 nM for PKC, PKA, c-Fgr, and Phosphorylase kinase respectively.
Desmethylglycitein (4',6,7-Trihydroxyisoflavone), a metabolite of daidzein, sourced from Glycine max with antioxidant, and anti-cancer activities.Desmethylglycitein binds directly to CDK1 and CDK2 in vivo, resulting in the suppresses CDK1 and CDK2 activity[1]. Desmethylglycitein is a direct inhibitor of protein kinase C (PKC)α, against solar UV (sUV)-induced matrix matrix metalloproteinase 1 (MMP1)[2]. Desmethylglycitein binds to PI3K in an ATP competitive manner in the cytosol, where it inhibits the activity of PI3K and downstream signaling cascades, leading to the suppression of adipogenesis in 3T3-L1 preadipocytes[3].
Epsilon-V1-2 (ε-V1-2), a PKCε-derived peptide, is a selective PKCε inhibitor. Epsilon-V1-2 inhibits the translocationof PKCε, but not α-, β-, and δPKC[1].
LXS196 is a potent and orally active protein kinase C (PKC) inhibitor under Phase I clinical trials for the treatment of uveal melanoma.
Isojacareubin can be isolated from Hypericum japonicum. Isojacareubin covalently inhibits SARS-CoV-2 3CLpro. Isojacareubin also has anti-helicobacter activity. Isojacareubin inhibits PKC, and suppresses hepatocellular carcinoma metastasis and induces apoptosis[1][2][3].
Anemonin (Pulsatilla camphor), a selective iNOS inhibitor, is also a PKC-θ inhibitor. Anemonin can significantly inhibit the translation or protein stability of PKC-θ protein. Anemonin also ameliorates dextran sodium sulfate-induced acute ulcerative colitis (UC) in mice. Anemonin can be used in the research of inflammation-related diseases[1][2].
H-Arg-Gly-Tyr-Ala-Leu-Gly-OH is a competitive and CAMP dependent protein kinase inhibitor[1].
[Ala113]MBP(104-118) is an noncompetitive peptide inhibitors of protein kinase C (PKC), with IC50s ranging from 28-62 μM[1].
A-3 hydrochloride is a potent, cell-permeable, reversible, ATP-competitive non-selective antagonist of various kinases. It against PKA (Ki=4.3 µM), casein kinase II (Ki=5.1 µM) and myosin light chain kinase (MLCK) (Ki=7.4 µM). A-3 hydrochloride also inhibits PKC and casein kinase I with Ki values of 47 µM and 80 µM, respectively[1].
Protein kinase C (alpha) peptide (TFA) is a peptide of PKC-α. PKC-α acts as a lipid-dependent ser/thr protein kinase, can modulate various cellular processes, including cell survival, proliferation, differentiation, migration, adhesion and so on[1].
Hu7691 free base is an orally active, selective Akt inhibitor with IC50s of 4.0 nM, 97.5 nM, 28 nM for Akt1, Akt2 and Akt3, respectively. Hu7691 free base inhibits tumor growth and enables decrease of cutaneous toxicity in mice[1].