Date published: 2026-5-3

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CAP-18 Activators

The efficacy of CAP-18, a vital component of the innate immune system, is significantly heightened by a selective array of chemical activators that engage distinct cellular pathways. Notably, cGMP Analog and Dibutyryl-cAMP orchestrate a cascade of intracellular events through the activation of guanylate cyclase and protein kinase A (PKA) respectively, culminating in the potentiation of CAP-18's antimicrobial actions. Similarly, Zinc Pyrithione exerts a synergistic effect by compromising microbial defenses, rendering them more vulnerable to CAP-18's mechanism of action. The concerted action of Nicotinamide and Retinoic Acid on epithelial integrity and cell differentiation creates a conducive environment for the augmented action of CAP-18. Lithium Chloride's modulation of GSK-3 signaling and Butyrate's role as a histonedeacetylase inhibitor both contribute to the elevation of intracellular conditions favoring CAP-18 activity. Additionally, the induction of CAP-18 by immunomodulatory agents like 1,25-Dihydroxyvitamin D3, and Cholecalciferol reinforces the host defense mechanisms by enhancing the innate immune response.

The biochemical landscape that governs CAP-18 activation is further refined by the actions of Sodium Butyrate and Indole-3-carbinol, which indirectly promote the expression and function of CAP-18 through epigenetic modifications and immune response modulation. Sodium Butyrate's inhibition of histone deacetylase leads to a broad upregulation of genes, including those encoding antimicrobial peptides, thus potentially amplifying CAP-18's presence and efficacy. Indole-3-carbinol's influence on immune pathways provides an additional layer of regulatory control, facilitating an environment that supports the heightened activity of CAP-18. Through these diverse yet interconnected biochemical interventions, these activators collectively ensure the optimized performance of CAP-18 in its role as a sentinel of the innate immune system, providing robust protection against pathogenic challenges without necessitating changes in the protein's expression levels.

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Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Dibutyryl-cGMP

51116-00-8sc-200321
sc-200321A
10 mg
50 mg
$153.00
$398.00
11
(1)

Dibutyryl-cGMP binds and activates guanylate cyclase, increasing levels of cGMP within cells. This elevation of cGMP can enhance CAP-18 activity by promoting vasodilation and improving antimicrobial peptide delivery to infection sites.

Zinc

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

1-Hydroxypyridine-2-thione zinc salt is known to disrupt membrane transport by blocking the ion transport in microbial cells. This can lead to an environment that is more susceptible to the antimicrobial action of CAP-18 by weakening microbial defense mechanisms.

Dibutyryl-cAMP

16980-89-5sc-201567
sc-201567A
sc-201567B
sc-201567C
20 mg
100 mg
500 mg
10 g
$47.00
$136.00
$492.00
$4552.00
74
(7)

Dibutyryl-cAMP, a cAMP analog, activates protein kinase A (PKA). PKA can phosphorylate various substrates that may aid in the release and processing of CAP-18, thus enhancing its antimicrobial function.

Nicotinamide

98-92-0sc-208096
sc-208096A
sc-208096B
sc-208096C
100 g
250 g
1 kg
5 kg
$44.00
$66.00
$204.00
$831.00
6
(1)

Nicotinamide, a form of vitamin B3, has been shown to boost skin barrier function. It can enhance CAP-18 activity by improving the skin's ability to support antimicrobial peptides, potentially increasing the local concentration and function of CAP-18.

Retinoic Acid, all trans

302-79-4sc-200898
sc-200898A
sc-200898B
sc-200898C
500 mg
5 g
10 g
100 g
$66.00
$325.00
$587.00
$1018.00
28
(1)

Retinoic acid influences cell differentiation and proliferation. It can enhance CAP-18 activity by inducing the differentiation of epithelial cells and consequently increasing the production of CAP-18, which is part of the innate immune response.

Lithium

7439-93-2sc-252954
50 g
$214.00
(0)

Lithium chloride activates glycogen synthase kinase 3 (GSK-3). Inhibition of GSK-3 has been implicated in the increase of antimicrobial peptides, including CAP-18, thus potentially enhancing its activity in the innate immune response.

Butyric acid

107-92-6sc-214640
sc-214640A
1 kg
10 kg
$64.00
$177.00
(0)

Butyrate, a short-chain fatty acid, acts as a histone deacetylase inhibitor which can lead to the upregulation of certain genes. This may include the gene CAMP, leading to increased production and enhanced activity of CAP-18.

1α,25-Dihydroxyvitamin D3

32222-06-3sc-202877B
sc-202877A
sc-202877C
sc-202877D
sc-202877
50 µg
1 mg
5 mg
10 mg
100 µg
$220.00
$645.00
$1000.00
$1500.00
$440.00
32
(2)

1,25-Dihydroxyvitamin D3, the active form of vitamin D, modulates immune responses and can stimulate the production of antimicrobial peptides including CAP-18, thus enhancing its activity in host defense.

Sodium Butyrate

156-54-7sc-202341
sc-202341B
sc-202341A
sc-202341C
250 mg
5 g
25 g
500 g
$31.00
$47.00
$84.00
$222.00
19
(3)

Sodium butyrate, like butyrate, acts as a histone deacetylase inhibitor, leading to increased acetylation of histones and enhanced expression of certain genes. This could result in increased production of CAP-18, boosting its antimicrobial activity.

Cholecalciferol

67-97-0sc-205630
sc-205630A
sc-205630B
1 g
5 g
10 g
$71.00
$163.00
$296.00
2
(1)

Cholecalciferol, or vitamin D3, upon conversion to its active form, can stimulate the production of CAP-18. This enhances its role in the innate immune response as a defense mechanism against pathogens.