Date published: 2026-5-30

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Mast Cell Protease 4 Activators

Mast Cell Protease 4 (MCP-4) Activators encompass a range of chemical compounds that indirectly augment MCP-4's functional activity by influencing mast cell dynamics and related signaling pathways. Cromolyn Sodium and Nedocromil, both mast cell stabilizers, enhance MCP-4 activity by keeping mast cells in a primed state, ready for activation. This preparation ensures an efficient release of MCP-4 upon appropriate stimulation. Similarly, Ketotifen and Quercetin, through their mast cell stabilizing and anti-histamine properties, control MCP-4 activity by managing the degranulation process of mast cells, thereby dictating the functional dynamics of MCP-4. In this context, Famotidine and Ranitidine, as H2 histamine receptor antagonists, also play a significant role by modulating histamine signaling, which in turn influences MCP-4 release by altering mast cell responsiveness.

Further influencing the activity of MCP-4 are compounds like Zafirlukast and Montelukast, leukotriene receptor antagonists that adjust the leukotriene-mediated signaling environment within tissues. This adjustment can enhance MCP-4 activity by altering the inflammatory milieu where mast cells and MCP-4 are active. Omalizumab, an anti-IgE antibody, indirectly increases MCP-4 activity by modulating mast cell activation thresholds through its binding to IgE. This modulation affects the dynamics of MCP-4 release. Additionally, Ibudilast and Epinephrine, by increasing cAMP levels and stabilizing mast cells through adrenergic receptor activation respectively, further contribute to the regulation of MCP-4 activity. Azelastine, an antihistamine, also indirectly impacts MCP-4 through its effects on mast cell activation and degranulation dynamics. Collectively, these activators work in concert to finely tune the release and functional activity of MCP-4 in physiological and pathophysiological processes without directly interacting with the protease itself.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Cromolyn disodium salt

15826-37-6sc-207459
sc-207459A
sc-207459B
sc-207459C
sc-207459D
sc-207459E
sc-207459F
1 g
5 g
25 g
50 g
100 g
500 g
1 kg
$50.00
$174.00
$624.00
$1040.00
$1873.00
$2913.00
$3537.00
(1)

Cromolyn Sodium stabilizes mast cells, preventing degranulation. This action indirectly enhances Mast Cell Protease 4 activity by maintaining a ready state in mast cells, which allows for rapid response and release of Mast Cell Protease 4 upon appropriate stimulation.

Zafirlukast

107753-78-6sc-204942
sc-204942A
10 mg
100 mg
$37.00
$174.00
1
(1)

Zafirlukast, a leukotriene receptor antagonist, modulates leukotriene activity. This modulation indirectly supports Mast Cell Protease 4 activity by altering the leukotriene-mediated signaling environment in tissues where mast cells are active, thereby potentially enhancing the functional response of Mast Cell Protease 4.

Ibudilast

50847-11-5sc-203080
10 mg
$218.00
1
(1)

Ibudilast, a phosphodiesterase inhibitor, increases cAMP levels. Elevated cAMP in mast cells can indirectly enhance Mast Cell Protease 4 activity by influencing mast cell stabilization and response dynamics.

Quercetin

117-39-5sc-206089
sc-206089A
sc-206089E
sc-206089C
sc-206089D
sc-206089B
100 mg
500 mg
100 g
250 g
1 kg
25 g
$11.00
$17.00
$110.00
$250.00
$936.00
$50.00
33
(2)

Quercetin, a flavonoid with mast cell stabilizing properties, can indirectly enhance Mast Cell Protease 4 activity by reducing mast cell degranulation, thus controlling the release and functional dynamics of Mast Cell Protease 4.

Famotidine

76824-35-6sc-205691
sc-205691A
500 mg
1 g
$65.00
$111.00
(0)

Famotidine, an H2 histamine receptor antagonist, modulates histamine signaling. This modulation can indirectly influence Mast Cell Protease 4 activity by altering mast cell responsiveness and thus the dynamics of Mast Cell Protease 4 release.

Azelastine

58581-89-8sc-337544
sc-337544A
sc-337544B
100 mg
500 mg
1 g
$220.00
$550.00
$700.00
(0)

Azelastine, an antihistamine, by impacting histamine receptor signaling, can indirectly influence Mast Cell Protease 4 activity through its effects on mast cell activation and degranulation dynamics.

(−)-Epinephrine

51-43-4sc-205674
sc-205674A
sc-205674B
sc-205674C
sc-205674D
1 g
5 g
10 g
100 g
1 kg
$41.00
$104.00
$201.00
$1774.00
$16500.00
(1)

Epinephrine, through its action on adrenergic receptors, can stabilize mast cells. This stabilization indirectly enhances Mast Cell Protease 4 activity by modulating the activation threshold and release mechanisms of mast cells.

Ranitidine

66357-35-5sc-203679
1 g
$193.00
(1)

Ranitidine, another H2 histamine receptor antagonist, alters histamine signaling pathways. This alteration can indirectly influence Mast Cell Protease 4 activity by modulating the responsiveness of mast cells, which are integral to the release of Mast Cell Protease 4.