Date published: 2026-4-24

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connexin 40 Activators

Connexin 40 Activators are a specific class of chemical compounds that play a crucial role in modulating cellular communication through gap junctions in various physiological systems. Gap junctions are specialized intercellular channels formed by connexin proteins that facilitate the direct exchange of ions, small molecules, and signaling molecules between adjacent cells. Connexin 40 (Cx40) is one of the many isoforms of connexin proteins, and it is predominantly found in the cardiovascular system, particularly in endothelial cells, which line blood vessels, and cardiac myocytes. Activators of Connexin 40 are compounds that selectively enhance the opening or permeability of Cx40 gap junctions, thereby promoting intercellular communication in tissues where Cx40 is expressed.

These activators exert their effects by binding to specific sites on the Cx40 protein, leading to conformational changes that result in increased channel conductance. By enhancing gap junction communication, Connexin 40 Activators facilitate the coordinated spread of electrical signals and the diffusion of essential molecules like ions, metabolites, and second messengers between cells. In the cardiovascular system, this enhanced intercellular communication is critical for maintaining normal cardiac rhythm and regulating vascular tone. Furthermore, Connexin 40 Activators may have implications in other tissues and systems where Cx40 is present, such as the nervous system and certain epithelial tissues, influencing diverse physiological processes. Understanding the mechanisms of Connexin 40 Activators can provide valuable insights into the regulation of cellular communication and may have broader implications for various aspects of cellular physiology and pathophysiology, though it is important to note that research in this field is ongoing, and the full extent of their potential effects is still being explored.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

β-Estradiol

50-28-2sc-204431
sc-204431A
500 mg
5 g
$63.00
$182.00
8
(1)

This estrogen steroid hormone has been shown to upregulate Cx40 expression in endothelial cells, influencing vascular function.

Cholecalciferol

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

Vitamin D3 has been reported to enhance the expression of Cx40 in endothelial cells, contributing to vascular health.

Resveratrol

501-36-0sc-200808
sc-200808A
sc-200808B
100 mg
500 mg
5 g
$80.00
$220.00
$460.00
64
(2)

As a polyphenolic compound, resveratrol is known to upregulate Cx40 expression, potentially improving cardiovascular health.

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, a metabolite of vitamin A, has been shown to induce Cx40 expression in certain cell types.

Hydrogen Peroxide

7722-84-1sc-203336
sc-203336A
sc-203336B
100 ml
500 ml
3.8 L
$31.00
$61.00
$95.00
28
(1)

As an oxidative stress agent, hydrogen peroxide can influence the expression of Cx40, particularly in vascular cells.

Adenosine 3′,5′-cyclic monophosphate

60-92-4sc-217584
sc-217584A
sc-217584B
sc-217584C
sc-217584D
sc-217584E
100 mg
250 mg
5 g
10 g
25 g
50 g
$116.00
$179.00
$265.00
$369.00
$629.00
$1150.00
(1)

cAMP is a second messenger that can enhance Cx40 expression, playing a role in cell signaling and communication.

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 raises intracellular cAMP levels, which can lead to the upregulation of Cx40 expression.

Hydrocortisone

50-23-7sc-300810
5 g
$102.00
6
(1)

Hydrocortisone, a cortisol derivative, can modulate the expression of connexins, including Cx40, in certain contexts.