Date published: 2026-5-18

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Arc Inhibitors

Common Arc Inhibitors include, but are not limited to Rapamycin CAS 53123-88-9, Wortmannin CAS 19545-26-7, LY 294002 CAS 154447-36-6, U-0126 CAS 109511-58-2 and PD 98059 CAS 167869-21-8.

Arc, also known as Activity-regulated cytoskeleton-associated protein, is a protein that has gained attention for its unique role in synaptic plasticity and neuronal activity. Synaptic plasticity is the ability of synapses to strengthen or weaken over time in response to changes in their activity. Arc plays an indispensable role in this process, especially in the consolidation of long-term memories. It is synthesized in response to various forms of synaptic activity and has been identified as a critical component in both long-term potentiation and long-term depression, two fundamental mechanisms underlying learning and memory in the brain.

Arc inhibitors are molecules designed to specifically target and reduce the activity or expression of the Arc protein. The role of Arc in synaptic modifications suggests that its modulation could have profound effects on neuronal communication and the overall functionality of neural networks. By inhibiting Arc, these compounds can influence the dynamic changes occurring at synapses and, consequently, the overall patterns of neuronal activity in the brain. The exact mechanisms through which Arc inhibitors function can vary; some might prevent the synthesis of Arc, while others might interfere with its activity or its interactions with other proteins in the neuron.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Rapamycin

53123-88-9sc-3504
sc-3504A
sc-3504B
1 mg
5 mg
25 mg
$63.00
$158.00
$326.00
233
(4)

Rapamycin is an mTOR inhibitor. Since mTOR signaling can regulate Arc expression, its inhibition might down-regulate Arc.

Wortmannin

19545-26-7sc-3505
sc-3505A
sc-3505B
1 mg
5 mg
20 mg
$67.00
$223.00
$425.00
97
(3)

Wortmannin inhibits PI3K, which is upstream of mTOR. Inhibition of this pathway might lead to reduced Arc expression.

LY 294002

154447-36-6sc-201426
sc-201426A
5 mg
25 mg
$123.00
$400.00
148
(1)

Another PI3K inhibitor, LY294002 might down-regulate Arc by inhibiting signaling pathways that regulate its expression.

PD 98059

167869-21-8sc-3532
sc-3532A
1 mg
5 mg
$40.00
$92.00
212
(2)

Like U0126, PD98059 is a MEK inhibitor and might down-regulate Arc through the MAPK/ERK pathway.

SP600125

129-56-6sc-200635
sc-200635A
10 mg
50 mg
$40.00
$150.00
257
(3)

SP600125 is a JNK inhibitor. JNK pathways can influence Arc, so its inhibition might reduce Arc levels.

SB 203580

152121-47-6sc-3533
sc-3533A
1 mg
5 mg
$90.00
$349.00
284
(5)

This compound inhibits p38 MAPK, which might influence pathways regulating Arc expression.

Dexamethasone

50-02-2sc-29059
sc-29059B
sc-29059A
100 mg
1 g
5 g
$91.00
$139.00
$374.00
36
(1)

Dexamethasone is a glucocorticoid that might influence neuronal activity and, indirectly, Arc expression.

Cycloheximide

66-81-9sc-3508B
sc-3508
sc-3508A
100 mg
1 g
5 g
$41.00
$84.00
$275.00
127
(6)

Cycloheximide inhibits protein synthesis, which might directly down-regulate Arc protein levels.

Actinomycin D

50-76-0sc-200906
sc-200906A
sc-200906B
sc-200906C
sc-200906D
5 mg
25 mg
100 mg
1 g
10 g
$74.00
$243.00
$731.00
$2572.00
$21848.00
53
(3)

By inhibiting RNA synthesis, actinomycin D can down-regulate the expression of many proteins, including Arc.

D(−)-2-Amino-5-phosphonovaleric acid (D-AP5)

79055-68-8sc-200434
5 mg
$97.00
2
(1)

APV is an NMDA receptor antagonist. Since NMDA receptor activity can induce Arc expression, its inhibition might reduce Arc levels.