Syk
Signaling Pathway Map
Research Area
Inhibitory Selectivity
Syk Products
| Catalog No. | Information | Product Use Citations | Product Validations |
|---|---|---|---|
| S2194 |
R406R406 is a potent Syk inhibitor with IC50 of 41 nM in cell-free assays, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 1. |
Platelets (3 x 108/mL) were preincubated with Y27632 (10 uM), R406 (1 uM), or a combination of Y27632 and R406 for 20 minutes followed by stimulation with oxLDL (50 ug/mL) for 15 seconds and lysis. Samples were then separated by SDS-PAGE and were immunoblotted for phospho-MLCSer19, followed by reprobing for β-tubulin. (Fi) Representative blots. (Fii) Densitometric analysis of 3 independent experiments. *P < .05. Data are presented as mean ± SEM. Experiments were carried out in the presence of apyrase (2 U/mL), indomethacin (10 uM), and EGTA (1 mM).
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| S2206 |
R788 (Fostamatinib) DisodiumR788 (Fostamatinib) disodium, a prodrug of the active metabolite R406, is a Syk inhibitor with IC50 of 41 nM in a cell-free assay, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 3. |
BCWM.1 and MWCL-1 cells treated with either vehicle or fostamatinib at the indicated concentrations for two hours, then protein extracts were analyzed by Western blotting for the activation status of MEK, p44/42 MAPK, and Akt with phospho-specific antibodies.
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| S1533 |
R406 (free base)R406 (free base) is a potent Syk inhibitor with IC50 of 41 nM in a cell-free assay, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 1. |
(C) Z-138 and JEKO-1 cells were simultaneously exposed to sorafenib and R406 at the indicated doses, and cell viability was determined at 48 hours by annexin V/PI staining. Bars represent the mean ± SD of 3 independent experiments. CI value is indicated for each combination. (D) Primary MCL cells from 7 patients were simultaneously exposed to sorafenib and R406 at the indicated doses for 48 hours, and cell viability was determined as above. Bars represent the mean ± SEM of all the samples analyzed. CI value is indicated for each combination. |
|
| S8032 |
PRT062607 (P505-15, BIIB057) HClPRT062607 (P505-15, BIIB057) HCl is a novel, highly selective Syk inhibitor with IC50 of 1 nM in cell-free assays, >80-fold selective for Syk than Fgr, Lyn, FAK, Pyk2 and Zap70. |
Dectin-1 is involved in activation of NLRP3-inflammasome by Malassezia spp. IL-1b secretion from mature human mono-DCs incubated with Syk-inhibitors (piceatannol, R406 or P505), 1 h prior to exposure to medium, MSU, b-glucan, nigericin or live M. furfur (MOI = 10) was determined after 6 h by ELISA.
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| S2625 |
Fostamatinib (R788)Fostamatinib (R788), a prodrug of the active metabolite R406, is a Syk inhibitor with IC50 of 41 nM, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 3. |
B cells were stimulated by irradiated CD40L+ L cells. Forward scatter vs. BrdU incorporation analysis (day 5) in the gated CD19+ CLL cells (D). The distribution of cells with high FSC (blasts, right quadrants) and proliferation (BrdU+, upper quadrants) are shown.
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| S6519New |
R112R112 is an ATP-competitive spleen tyrosine kinase (Syk) inhibitor with Ki value of 96 nM. |
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| S3026 |
PiceatannolPiceatannol, a natural stilbene, is a selective Syk inhibitor and ~10-fold selectivity versus Lyn. |
Change of protein and mRNA with or without the pretreatment of Syk inhibitors. After pretreated with PRT062607 and Piceatannol for 30 min before A. fumigatus hyphae stimulation, activation of Syk was inhibited by 1 μM PRT062607 (p < 0.05), 2 μM PRT062607 (p < 0.01), 5 μM Piceatannol (p < 0.05), 10 μM Piceatannol (p < 0.01) a compared with untreated cells. mRNA expression of IL-1β, IL-6, IL-8 and CXCL1 induced by A. fumigatus hyphae were significantly suppressed b. mRNA expression of IL-1β, IL-6, IL-8, CXCL1 downregulated significantly by 1 μM PRT062607, 2 μM PRT062607, 5 μM Piceatannol, 10 μM Piceatannol. **means p < 0.01, *p < 0.05. |
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| S4921 |
MNS (3,4-Methylenedioxy-β-nitrostyrene, MDBN)MNS is a tyrosine kinase inhibitor, inhibits Syk, Src, p97 with IC50 of 2.5 μM, 29.3 μM and 1.7 μM, respectively. |
WT mouse primary macrophages were untreated as control (lane 1) or treated with 0.1μg/ml E. coli LPS (lane 5-8), 10μM E-64 (lane 2 and 6), 250μM PMSF (lane 3 and 7), or 20μM MNS (lane 4 and 8). The cells were continuously cultured for 16 hrs. Extracts from whole cells or nuclei were separately purified and subjected to WB analysis with antibody against pERK2, LITAF, or actin/tubulin as control.
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| S7286 |
RO9021RO9021 potently inhibits SYK kinase activity with an average IC50 of 5.6 nM and suppresses B-cell receptor signaling. |
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| S8442 |
TAK-659TAK-659 is a potent and selective inhibitor of spleen tyrosine kinase (SYK) with an IC50 value of 3.2 nM. It is selective against most other kinases, but potent toward both SYK and FLT3. |
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| S7738 |
PRT-060318 2HClPRT-060318 (PRT318) is a novel selective inhibitor of the Syk tyrosine kinase with an IC50 of 4 nM, as an approach to HIT treatment. |
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| S7523 |
Entospletinib (GS-9973)Entospletinib (GS-9973) is an orally bioavailable, selective Syk inhibitor with IC50 of 7.7 nM in a cell-free assay and showed 13- to >1000-fold cellular selectivity for Syk over other kinases(including Jak2, ckit, Flt3, Ret, KDR) as assessed by target protein phosphorylation or functional response. |
Dose titration effects of sotrastaurin (Sotr), GS-9973 (GS) on GSK-3 and AKT phosphorylation were evaluated in anti-IgM-stimulated CLL cells. One representative experiment out of 3 performed is shown.
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| S7006 |
BAY-61-3606BAY-61-3606 is a potent and selective inhibitor of Syk kinase (Ki = 7.5 nM). |
| Catalog No. | Information | Product Use Citations | Product Validations |
|---|---|---|---|
| S2194 |
R406R406 is a potent Syk inhibitor with IC50 of 41 nM in cell-free assays, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 1. |
Platelets (3 x 108/mL) were preincubated with Y27632 (10 uM), R406 (1 uM), or a combination of Y27632 and R406 for 20 minutes followed by stimulation with oxLDL (50 ug/mL) for 15 seconds and lysis. Samples were then separated by SDS-PAGE and were immunoblotted for phospho-MLCSer19, followed by reprobing for β-tubulin. (Fi) Representative blots. (Fii) Densitometric analysis of 3 independent experiments. *P < .05. Data are presented as mean ± SEM. Experiments were carried out in the presence of apyrase (2 U/mL), indomethacin (10 uM), and EGTA (1 mM).
|
|
| S2206 |
R788 (Fostamatinib) DisodiumR788 (Fostamatinib) disodium, a prodrug of the active metabolite R406, is a Syk inhibitor with IC50 of 41 nM in a cell-free assay, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 3. |
BCWM.1 and MWCL-1 cells treated with either vehicle or fostamatinib at the indicated concentrations for two hours, then protein extracts were analyzed by Western blotting for the activation status of MEK, p44/42 MAPK, and Akt with phospho-specific antibodies.
|
|
| S1533 |
R406 (free base)R406 (free base) is a potent Syk inhibitor with IC50 of 41 nM in a cell-free assay, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 1. |
(C) Z-138 and JEKO-1 cells were simultaneously exposed to sorafenib and R406 at the indicated doses, and cell viability was determined at 48 hours by annexin V/PI staining. Bars represent the mean ± SD of 3 independent experiments. CI value is indicated for each combination. (D) Primary MCL cells from 7 patients were simultaneously exposed to sorafenib and R406 at the indicated doses for 48 hours, and cell viability was determined as above. Bars represent the mean ± SEM of all the samples analyzed. CI value is indicated for each combination. |
|
| S8032 |
PRT062607 (P505-15, BIIB057) HClPRT062607 (P505-15, BIIB057) HCl is a novel, highly selective Syk inhibitor with IC50 of 1 nM in cell-free assays, >80-fold selective for Syk than Fgr, Lyn, FAK, Pyk2 and Zap70. |
Dectin-1 is involved in activation of NLRP3-inflammasome by Malassezia spp. IL-1b secretion from mature human mono-DCs incubated with Syk-inhibitors (piceatannol, R406 or P505), 1 h prior to exposure to medium, MSU, b-glucan, nigericin or live M. furfur (MOI = 10) was determined after 6 h by ELISA.
|
|
| S2625 |
Fostamatinib (R788)Fostamatinib (R788), a prodrug of the active metabolite R406, is a Syk inhibitor with IC50 of 41 nM, strongly inhibits Syk but not Lyn, 5-fold less potent to Flt3. Phase 3. |
B cells were stimulated by irradiated CD40L+ L cells. Forward scatter vs. BrdU incorporation analysis (day 5) in the gated CD19+ CLL cells (D). The distribution of cells with high FSC (blasts, right quadrants) and proliferation (BrdU+, upper quadrants) are shown.
|
|
| S6519New |
R112R112 is an ATP-competitive spleen tyrosine kinase (Syk) inhibitor with Ki value of 96 nM. |
||
| S3026 |
PiceatannolPiceatannol, a natural stilbene, is a selective Syk inhibitor and ~10-fold selectivity versus Lyn. |
Change of protein and mRNA with or without the pretreatment of Syk inhibitors. After pretreated with PRT062607 and Piceatannol for 30 min before A. fumigatus hyphae stimulation, activation of Syk was inhibited by 1 μM PRT062607 (p < 0.05), 2 μM PRT062607 (p < 0.01), 5 μM Piceatannol (p < 0.05), 10 μM Piceatannol (p < 0.01) a compared with untreated cells. mRNA expression of IL-1β, IL-6, IL-8 and CXCL1 induced by A. fumigatus hyphae were significantly suppressed b. mRNA expression of IL-1β, IL-6, IL-8, CXCL1 downregulated significantly by 1 μM PRT062607, 2 μM PRT062607, 5 μM Piceatannol, 10 μM Piceatannol. **means p < 0.01, *p < 0.05. |
|
| S4921 |
MNS (3,4-Methylenedioxy-β-nitrostyrene, MDBN)MNS is a tyrosine kinase inhibitor, inhibits Syk, Src, p97 with IC50 of 2.5 μM, 29.3 μM and 1.7 μM, respectively. |
WT mouse primary macrophages were untreated as control (lane 1) or treated with 0.1μg/ml E. coli LPS (lane 5-8), 10μM E-64 (lane 2 and 6), 250μM PMSF (lane 3 and 7), or 20μM MNS (lane 4 and 8). The cells were continuously cultured for 16 hrs. Extracts from whole cells or nuclei were separately purified and subjected to WB analysis with antibody against pERK2, LITAF, or actin/tubulin as control.
|
|
| S7286 |
RO9021RO9021 potently inhibits SYK kinase activity with an average IC50 of 5.6 nM and suppresses B-cell receptor signaling. |
||
| S8442 |
TAK-659TAK-659 is a potent and selective inhibitor of spleen tyrosine kinase (SYK) with an IC50 value of 3.2 nM. It is selective against most other kinases, but potent toward both SYK and FLT3. |
||
| S7738 |
PRT-060318 2HClPRT-060318 (PRT318) is a novel selective inhibitor of the Syk tyrosine kinase with an IC50 of 4 nM, as an approach to HIT treatment. |
||
| S7523 |
Entospletinib (GS-9973)Entospletinib (GS-9973) is an orally bioavailable, selective Syk inhibitor with IC50 of 7.7 nM in a cell-free assay and showed 13- to >1000-fold cellular selectivity for Syk over other kinases(including Jak2, ckit, Flt3, Ret, KDR) as assessed by target protein phosphorylation or functional response. |
Dose titration effects of sotrastaurin (Sotr), GS-9973 (GS) on GSK-3 and AKT phosphorylation were evaluated in anti-IgM-stimulated CLL cells. One representative experiment out of 3 performed is shown.
|
|
| S7006 |
BAY-61-3606BAY-61-3606 is a potent and selective inhibitor of Syk kinase (Ki = 7.5 nM). |
