Date published: 2025-11-1

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Trav12-2 Activators

T cell receptor alpha variable 12-2 activators include a variety of chemical compounds that can influence signaling pathways directly or indirectly involved in TCR activation. Phorbol 12-myristate 13-acetate (PMA) serves as a direct activator of protein kinase C (PKC), a critical kinase in the TCR signaling cascade. Upon activation by PMA, PKC phosphorylates multiple targets within the signaling pathway, resulting in amplified TCR signaling and increased functional activity of the TCR. Ionomycin, on the other hand, raises intracellular calcium levels, which is a crucial second messenger in TCR signaling. Elevated calcium levels can enhance the activation of the TCR-mediated signaling pathway, leading to downstream cellular responses.

In addition to these direct activators, there are compounds that act on regulatory pathways to influence TCR activation. For example, Cyclosporin A inhibits calcineurin, which typically acts to dephosphorylate and activate the transcription factor NFAT. The inhibition of calcineurin can trigger compensatory cellular mechanisms that enhance TCR signaling pathways to sustain T cell activation despite the blockage of one pathway. Okadaic acid, as an inhibitor of serine/threonine phosphatases, can similarly increase the phosphorylation level of proteins that participate in TCR signaling, leading to an enhancement of TCR activity. Compounds such as Forskolin, which increases cAMP levels, can indirectly influence TCR signaling by activating PKA, which then phosphorylates and influences the activity of proteins within the TCR signaling pathway. Lastly, Zoledronic acid indirectly enhances TCR signaling in a subset of T cells by leading to theaccumulation of isopentenyl pyrophosphate (IPP), an activator of gamma-delta TCRs.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

PMA

16561-29-8sc-3576
sc-3576A
sc-3576B
sc-3576C
sc-3576D
1 mg
5 mg
10 mg
25 mg
100 mg
$40.00
$129.00
$210.00
$490.00
$929.00
119
(6)

PMA is a potent activator of protein kinase C (PKC), which, upon activation, can lead to increased T cell receptor signaling by enhancing the phosphorylation state of key signaling proteins downstream of TCR engagement.

Ionomycin

56092-82-1sc-3592
sc-3592A
1 mg
5 mg
$76.00
$265.00
80
(4)

Ionomycin is a calcium ionophore that raises intracellular calcium levels, which is an essential second messenger in TCR signaling, thus leading to enhanced activation of TCR-mediated signaling pathways.

Cyclosporin A

59865-13-3sc-3503
sc-3503-CW
sc-3503A
sc-3503B
sc-3503C
sc-3503D
100 mg
100 mg
500 mg
10 g
25 g
100 g
$62.00
$90.00
$299.00
$475.00
$1015.00
$2099.00
69
(5)

Cyclosporin A inhibits calcineurin, which normally dephosphorylates NFAT; its inhibition can lead to compensatory mechanisms that enhance TCR signaling to maintain T cell activation.

Bisindolylmaleimide I (GF 109203X)

133052-90-1sc-24003A
sc-24003
1 mg
5 mg
$103.00
$237.00
36
(1)

Bisindolylmaleimide I is a specific PKC inhibitor; paradoxically, its inhibition of certain PKC isoforms can lead to a compensatory upregulation of TCR signaling pathways in some contexts.

U-0126

109511-58-2sc-222395
sc-222395A
1 mg
5 mg
$63.00
$241.00
136
(2)

U0126 is an inhibitor of MEK, which might lead to a compensatory increase in other MAPK pathways such as JNK or p38, indirectly enhancing TCR signaling.

Okadaic Acid

78111-17-8sc-3513
sc-3513A
sc-3513B
25 µg
100 µg
1 mg
$285.00
$520.00
$1300.00
78
(4)

Okadaic acid is a potent inhibitor of serine/threonine phosphatases, and its action can lead to increased phosphorylation of proteins involved in TCR signaling, thereby enhancing TCR activity.

Brefeldin A

20350-15-6sc-200861C
sc-200861
sc-200861A
sc-200861B
1 mg
5 mg
25 mg
100 mg
$30.00
$52.00
$122.00
$367.00
25
(3)

Brefeldin A disrupts protein transport by blocking the function of the Golgi apparatus, which can enhance TCR signaling by modulating the glycosylation status of signaling molecules.

Monensin A

17090-79-8sc-362032
sc-362032A
5 mg
25 mg
$152.00
$515.00
(1)

Monensin is an ionophore that disrupts intracellular pH and ion gradients, which can impact TCR signaling by affecting the conformation and function of signaling molecules.

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$76.00
$150.00
$725.00
$1385.00
$2050.00
73
(3)

Forskolin activates adenylyl cyclase, increasing cAMP levels, which can lead to the activation of protein kinase A (PKA) and indirect enhancement of TCR signaling pathways.

Zoledronic acid, anhydrous

118072-93-8sc-364663
sc-364663A
25 mg
100 mg
$90.00
$251.00
5
(0)

Zoledronic acid inhibits farnesyl pyrophosphate synthase, leading to accumulation of isopentenyl pyrophosphate (IPP), which can be recognized by gamma-delta TCRs, indirectly enhancing TCR signaling.