2. MAPK/ERK Pathway
  3. Ribosomal S6 Kinase (RSK)

Ribosomal S6 Kinase (RSK)

Ribosomal S6 Kinase (RSK) is a family of serine/threonine protein kinases involved in the regulation of cell viability. RSK is phosphorylated in response to mitogens by activation of one or more protein kinase cascades. Phosphorylation of S6 in vivo is catalyzed by (at least) two distinct mitogen-activated S6 kinase families distinguishable by size, the 70 kDa and 90 kDa S6 kinases. Both S6 kinases are activated by serine/threonine phosphorylation.

The p90 ribosomal s6 kinase family (1-4) is a group of highly conserved Ser/Thr kinases that act as downstream effectors of the Ras/Raf/MEK/ERK signaling pathway. They regulate diverse cellular processes, such as cell growth, cell motility, cell survival and cell proliferation. The p70 ribosomal protein S6 kinase, an important member of AGC family, is a kind of multifunctional Ser/Thr kinases, which plays an important role in mTOR signaling cascade. The p70 ribosomal protein S6 kinase is closely associated with diverse cellular processes such as protein synthesis, mRNA processing, glucose homeostasis, cell growth and apoptosis.

Ribosomal S6 Kinase (RSK) Related Products (60):

Cat. No. Product Name Effect Purity
  • HY-156498
    RMC-7977 Inhibitor
    RMC-7977 is an orally active triple-complex RAS inhibitor that can simultaneously bind to cyclophilin A (CYPA) (Kd = 195 nM) and KRAS (G12V) (Kd = 292 μM). It exhibits broad-spectrum inhibitory activity against KRAS, NRAS, and HRAS proteins and their various wild-type and mutant variants. RMC-7977 induces apoptosis by inhibiting the phosphorylation of ERK, CRAF, and RSK, as well as increasing PARP cleavage. This leads to tumor regression, reduces resistance in KRASG12C cancer models, and demonstrates good tolerability across various RAS cancer models[1][2][3].
  • HY-10510
    BI-D1870 Inhibitor
    BI-D1870 is an ATP-competitive, cell permeable and brain penetrated inhibitor of RSK isoforms, with IC50s of 31 nM/24 nM/18 nM/15 nM for RSK1/RSK2/RSK3/RSK4, respectively[1][2][3][4][5].
  • HY-N0418
    Quercitrin Inhibitor 99.72%
    Quercitrin (Quercetin 3-rhamnoside) is a bioflavonoid compound with potential anti-inflammation, antioxidative and neuroprotective effect. Quercitrin induces apoptosis of colon cancer cells. Quercitrin can be used for the research of cardiovascular and neurological disease research[1][2].
  • HY-15773
    PF-4708671 Inhibitor 99.87%
    PF-4708671 is a potent cell-permeable S6K1 inhibitor with a Ki of 20 nM and IC50 of 160 nM.
  • HY-N0643
    Carnosol Inhibitor 99.90%
    Carnosol is a potent Ribosomal S6 Kinase (RSK2) inhibitor that could be useful for treating gastric cancer, with an IC50 of ~5.5 μM[1]. Carnosol, a Nrf2 activator, increases the nuclear levels of Nrf2 and can promote the expression of heme oxygenase 1 (HMOX1)[2][3].
  • HY-N14232
    Inactone Inhibitor
    Inactone is a bioactive molecule of 3-glutarimidyl group that inhibits large ribosomal subunit[1].
  • HY-172392
    HSND80 Inhibitor
    HSND80 (Compound 1) is an orally active inhibitor of MNK/p70S6K, with Kd values of 44 nM against MNK1 and 4 nM against MNK2. HSND80 has a longer target residence time of 45 mins and 58 mins against MNK1 and MNK2 respectively. HSND80 can suppress non-small cell lung cancer (NSCLC) both in vitro and in vivo, and suppress Triple-Negative Breast Cancer (TNBC) in vitro[1].
  • HY-173406
    RSK-IN-2 Inhibitor
    RSK-IN-2 (Compound 3e) is a RSK inhibitor, with IC50 s of 37.89 nM (RSK2), 30.78 nM (RSK1), 20.51 nM (RSK3), 91.28 nM (RSK4). RSK-IN-2 inhibits tumor cell proliferation, induces apoptosis and causes cell cycle arrest in the G2/M phase[1].
  • HY-W011109
    CKI-7 Inhibitor
    CKI-7 is a potent and ATP-competitive casein kinase 1 (CK1) inhibitor with an IC50 of 6 μM and a Ki of 8.5 μM. CKI-7 is a selective Cdc7 kinase inhibitor. CKI-7 also inhibits SGK, ribosomal S6 kinase-1 (S6K1) and mitogen- and stress-activated protein kinase-1 (MSK1). CKI-7 has a much weaker effect on casein kinase II and other protein kinases[1][2][3][4].
  • HY-132302A
    Hu7691 free base Inhibitor
    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].
  • HY-N0643R
    Carnosol (Standard) Inhibitor
    Carnosol (Standard) is the analytical standard of Carnosol. This product is intended for research and analytical applications. Carnosol is a potent Ribosomal S6 Kinase (RSK2) inhibitor that could be useful for treating gastric cancer, with an IC50 of ~5.5 μM[1]. Carnosol, a Nrf2 activator, increases the nuclear levels of Nrf2 and can promote the expression of heme oxygenase 1 (HMOX1)[2][3].
  • HY-132302
    Hu7691 Inhibitor 99.91%
    Hu7691 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 inhibits tumor growth and enables decrease of cutaneous toxicity in mice[1].
  • HY-112400
    Bisindolylmaleimide V Inhibitor
    Bisindolylmaleimide V is a cell-permeable negative control for protein kinase C inhibition studies with an IC50 value over 100 µM[1]. Bisindolylmaleimide V blocks the activation of mitogen-stimulated protein kinase p70s6k/p85s6k (S6K) in vivo with an IC50 of 8 µM[2].
  • HY-152944
    S6K1-IN-DG2 Inhibitor 99.70%
    S6K1-IN-DG2 (Compound 66) is a p70S6K inhibitor (IC50: < 100 nM)[1].
  • HY-52101A
    FMK Inhibitor 99.83%
    FMK is a an irreversible RSK2 kinase inhibitor, that covalently modifies the C-terminal kinase domain of RSK.
  • HY-101029A
    MBM-55S Inhibitor
    MBM-55S is a potent NIMA-related kinase 2 (Nek2) inhibitor with an IC50 of 1 nM. MBM-55S shows a 20-fold or greater selectivity in most kinases with the exception of RSK1 (IC50=5.4 nM) and DYRK1a (IC50=6.5 nM). MBM-55S effectively inhibits the proliferation of cancer cells by inducing cell cycle arrest and apoptosis. MBM-55S shows antitumor activities, and no obvious toxicity to mice[1].
  • HY-133028
    CKI-7 free base Inhibitor 99.80%
    CKI-7 free base is a potent and ATP-competitive casein kinase 1 (CK1) inhibitor with an IC50 of 6 μM and a Ki of 8.5 μM. CKI-7 free base is a selective Cdc7 kinase inhibitor. CKI-7 free base also inhibits SGK, ribosomal S6 kinase-1 (S6K1) and mitogen- and stress-activated protein kinase-1 (MSK1). CKI-7 free base has a much weaker effect on casein kinase II and other protein kinases[1][2][3][4].
  • HY-15237
    SL 0101-1 Inhibitor
    SL 0101-1 (SL0101), a kaempferol glycoside, isolated from the tropical plant F. refracta, is a cell-permeable, selective, reversible, ATP-competitive p90 Ribosomal S6 Kinase (RSK) inhibitor, with an IC50 of 89 nM[1]. SL 0101-1 (SL0101) is a selective RSK1/2 inhibitor, with a Ki of 1 μM[2].
  • HY-103100
    SB-699551 Inhibitor 99.53%
    SB-699551 is a potent and selective 5-HT5A antagonist with a Ki value of 5.1 μM. SB-699551 increases the phosphorylation levels of CREB and ATF1, and decreases the phosphorylation levels of AKT, PRAS40, P70S6K, FOXO1, and S6RP. SB-699551 improves drug-induced cognitive deficits. SB-699551 improves social withdrawal and forgetfulness. SB-699551 inhibits breast cancer.
  • HY-18507
    AD57 Inhibitor 98.08%
    AD57 is an orally active multikinase inhibitor, inhibits RET, BRAF, S6K and Src, with greatly reduces mTOR activity[1].