Date published: 2026-2-22

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V1RB Activators

V1RB Activators are a diverse group of chemical compounds that enhance the functional activity of V1RB through distinct yet convergent signaling pathways. Forskolin, Isoproterenol, PGE2, Histamine, and Caffeine all elevate intracellular cAMP levels but through different mechanisms, such as direct activation of adenylyl cyclase or inhibition of phosphodiesterases. The increase in cAMP levels activates PKA, which is capable of phosphorylating proteins including V1RB, thereby enhancing its activity as part of the sensory signaling. Nicotine and Zinc contribute to this enhancement by modulating the receptor signaling and stabilization. L-Arginine and Sildenafil, through their roles as precursors or inhibitors related to the cGMP pathway, indirectly influence the cAMP levels, which could augment V1RBactivity through complex intracellular cross-talk mechanisms.

The action of chemicals like 8-Br-cAMP and Rolipram bypasses upstream activators and directly increases PKA activity or cAMP levels, respectively, leading to an enhanced phosphorylation state and activity of V1RB. Capsaicin, on the other hand, utilizes the calcium signaling pathway to activate CaMK, which may subsequently interact with cAMP-dependent pathways, potentially resulting in the phosphorylation and activation of V1RB. Collectively, these V1RB activators work through various biochemical routes to ensure the enhancement of V1RB signaling by targeting different aspects of the receptor's activation and regulatory mechanisms. Each activator, while distinct in its initial target and mechanism, ultimately converges on the modulation of intracellular signaling cascades that facilitate the increased activity of V1RB without altering its expression levels, ensuring a more potent and regulated sensory response.

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Forskolin is a diterpene derived from the plant Coleus forskohlii. It directly stimulates adenylyl cyclase, increasing intracellular cAMP levels. Elevated cAMP activates PKA (Protein Kinase A), which can phosphorylate various proteins and receptors, including V1RB, leading to its enhanced functional activity as a sensory receptor.

Isoproterenol Hydrochloride

51-30-9sc-202188
sc-202188A
100 mg
500 mg
$28.00
$38.00
5
(0)

Isoproterenol is a synthetic catecholamine and beta-adrenergic agonist. It activates beta-adrenergic receptors, leading to Gs protein activation and subsequent stimulation of adenylyl cyclase. The resulting rise in cAMP levels indirectly enhances V1RB activity by promoting G protein-coupled receptor signaling, which V1RB is a part of.

PGE2

363-24-6sc-201225
sc-201225C
sc-201225A
sc-201225B
1 mg
5 mg
10 mg
50 mg
$57.00
$159.00
$275.00
$678.00
37
(1)

Prostaglandin E2 is a lipid compound that activates G protein-coupled receptors, leading to the activation of adenylate cyclase and increased cAMP production. This signaling cascade can contribute to the activation of V1RB by facilitating the G protein coupling and signaling processes that V1RB is involved in.

Histamine, free base

51-45-6sc-204000
sc-204000A
sc-204000B
1 g
5 g
25 g
$94.00
$283.00
$988.00
7
(1)

Histamine, through its action on H2 receptors, can increase cAMP levels by activating adenylyl cyclase. This elevation in cAMP may enhance the activity of V1RB, which is modulated by cAMP-dependent pathways in sensory neurons.

L-Arginine

74-79-3sc-391657B
sc-391657
sc-391657A
sc-391657C
sc-391657D
5 g
25 g
100 g
500 g
1 kg
$20.00
$31.00
$61.00
$219.00
$352.00
2
(0)

L-Arginine is a precursor to nitric oxide (NO), which activates guanylyl cyclase, leading to increased cGMP levels. cGMP can modulate cAMP levels through cross-talk mechanisms, potentially enhancing the functional activity of V1RB.

8-Bromoadenosine 3′,5′-cyclic monophosphate

23583-48-4sc-217493B
sc-217493
sc-217493A
sc-217493C
sc-217493D
25 mg
50 mg
100 mg
250 mg
500 mg
$108.00
$169.00
$295.00
$561.00
$835.00
2
(1)

8-Bromoadenosine 3’,5’-cyclic monophosphate is a cell-permeable cAMP analog that directly stimulates PKA. Activated PKA can phosphorylate V1RB or associated regulatory proteins, thereby enhancing V1RB signaling.

Zinc

7440-66-6sc-213177
100 g
$48.00
(0)

Zinc can act as a modulator of G protein-coupled receptors and their signaling pathways. It may enhance V1RB activity by stabilizing the receptor conformation that prefers active signaling states.

Caffeine

58-08-2sc-202514
sc-202514A
sc-202514B
sc-202514C
sc-202514D
50 g
100 g
250 g
1 kg
5 kg
$33.00
$67.00
$97.00
$192.00
$775.00
13
(1)

Caffeine inhibits phosphodiesterases, leading to increased cAMP levels by preventing its breakdown. Elevated cAMP can enhance V1RB signaling by activating PKA, which in turn could phosphorylate and activate V1RB directly or modulate its signaling pathway.

Rolipram

61413-54-5sc-3563
sc-3563A
5 mg
50 mg
$77.00
$216.00
18
(1)

Rolipram is a selective inhibitor of phosphodiesterase 4 (PDE4), which leads to an increase in cAMP levels by preventing its degradation. This increase can indirectly enhance V1RB activity through cAMP-dependent signaling pathways.

Capsaicin

404-86-4sc-3577
sc-3577C
sc-3577D
sc-3577A
50 mg
250 mg
500 mg
1 g
$96.00
$160.00
$240.00
$405.00
26
(1)

Capsaicin binds to the TRPV1 receptor, leading to an influx of calcium ions. This increased intracellular calcium can activate calmodulin-dependent kinase (CaMK), which may cross-talk with cAMP pathways, indirectly enhancing V1RB activity through phosphorylation events.