Date published: 2026-5-5

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Syk Activators

Syk (Spleen Tyrosine Kinase) activators constitute a chemical class of compounds that interact with and modulate the activity of Syk, a cytoplasmic protein kinase predominantly found in immune cells. Syk plays a crucial role in transducing signals from various immunoreceptors, such as B-cell receptors (BCRs) and high-affinity IgE receptors (FcεRI), leading to downstream cellular responses. Syk activators are characterized by their ability to enhance the kinase activity of Syk by promoting its phosphorylation and activation. This activation is pivotal in initiating intracellular signaling cascades that ultimately regulate immune cell activation, immune responses, and cellular functions.

The activation of Syk by these compounds can occur through multiple mechanisms. Some Syk activators may induce conformational changes in the protein, making it more accessible for phosphorylation. Others may act by increasing the kinase's affinity for substrate molecules, amplifying its catalytic activity. These activators can also enhance Syk's interactions with other signaling molecules or adaptors, facilitating the formation of protein complexes that transmit signals crucial for immune cell activation, including processes like phagocytosis, degranulation, and cytokine production.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Piceatannol

10083-24-6sc-200610
sc-200610A
sc-200610B
1 mg
5 mg
25 mg
$51.00
$71.00
$199.00
11
(2)

Piceatannol is a natural polyphenol found in grapes and red wine. It can activate Syk by binding to and phosphorylating specific tyrosine residues on the Syk protein, leading to its activation.

R788

901119-35-5sc-364597
sc-364597A
2 mg
50 mg
$405.00
$4000.00
2
(0)

While primarily developed as a Syk inhibitor, at lower concentrations, R788 can paradoxically activate Syk. It does so by potentially stabilizing the open conformation of Syk, making it more accessible for phosphorylation.

Curcumin

458-37-7sc-200509
sc-200509A
sc-200509B
sc-200509C
sc-200509D
sc-200509F
sc-200509E
1 g
5 g
25 g
100 g
250 g
1 kg
2.5 kg
$37.00
$69.00
$109.00
$218.00
$239.00
$879.00
$1968.00
47
(1)

Curcumin, found in turmeric, can activate Syk in certain cellular contexts. It may do so through direct interactions with Syk or by modulating downstream signaling pathways.

Garcinol

78824-30-3sc-200891
sc-200891A
10 mg
50 mg
$124.00
$502.00
13
(1)

Garcinol, a polyisoprenylated benzophenone derivative, can activate Syk in some studies. Its exact mode of Syk activation remains under investigation.

Olaparib

763113-22-0sc-302017
sc-302017A
sc-302017B
250 mg
500 mg
1 g
$210.00
$305.00
$495.00
10
(1)

While primarily known as a PARP inhibitor, olaparib can activate Syk at certain concentrations. The specific mechanism of Syk activation by olaparib is not well-defined.

Resveratrol

501-36-0sc-200808
sc-200808A
sc-200808B
100 mg
500 mg
5 g
$80.00
$220.00
$460.00
64
(2)

Resveratrol, a natural polyphenol found in grapes and red wine, has been reported to activate Syk in specific cellular contexts. Its mechanism of activation may involve direct interactions with Syk or downstream signaling pathways.

D-erythro-Sphingosine-1-phosphate

26993-30-6sc-201383
sc-201383D
sc-201383A
sc-201383B
sc-201383C
1 mg
2 mg
5 mg
10 mg
25 mg
$165.00
$322.00
$570.00
$907.00
$1727.00
7
(1)

S1P can activate Syk in immune cells through G-protein-coupled receptors. Activation of these receptors triggers downstream signaling events that involve Syk.

Hydrogen Peroxide

7722-84-1sc-203336
sc-203336A
sc-203336B
100 ml
500 ml
3.8 L
$31.00
$61.00
$95.00
28
(1)

Reactive oxygen species, such as H2O2, can activate Syk by inducing oxidative stress. Oxidation of specific cysteine residues on Syk may lead to its activation.

C2 Ceramide

3102-57-6sc-201375
sc-201375A
5 mg
25 mg
$124.00
$460.00
12
(1)

Ceramide and its derivatives can activate Syk in certain signaling pathways, particularly in response to cellular stress. The exact mechanism of Syk activation by ceramide is complex and context-dependent.