Date published: 2026-6-1

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Calpain 1 Activators

Calpain 1, also known as μ-calpain, is a calcium-dependent cysteine protease involved in various cellular processes, including cytoskeletal remodeling, signal transduction, cell differentiation, and apoptosis. Calpain 1 activators are small molecules designed to enhance the activity of calpain 1, a calcium-dependent cysteine protease found in mammalian cells. By interacting with specific binding sites on calpain 1, these activators induce conformational changes that activate the enzyme. This modulation of calpain 1 impacts various cellular functions, including cytoskeletal dynamics, cell migration, adhesion, shape changes, and intracellular signaling pathways involved in cell proliferation and differentiation. One important role of calpain 1 is the regulation of cytoskeletal dynamics, including the breakdown and remodeling of cytoskeletal proteins. Calpain 1 activators can influence processes such as cell migration, adhesion, and shape changes by enhancing the proteolytic activity of the enzyme. Additionally, calpain 1 is involved in the modulation of intracellular signaling pathways. The activation of calpain 1 by these activators can impact signaling cascades crucial for cell proliferation and differentiation. By modulating the activity of calpain 1, these compounds affect cellular behavior and responses to extracellular stimuli, contributing to the regulation of various physiological and pathological processes.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

A23187

52665-69-7sc-3591
sc-3591B
sc-3591A
sc-3591C
1 mg
5 mg
10 mg
25 mg
$55.00
$131.00
$203.00
$317.00
23
(1)

Facilitates the transport of calcium ions across biological membranes. It has been shown to increase calpain 1 expression in various cell types.

Arachidonic Acid (20:4, n-6)

506-32-1sc-200770
sc-200770A
sc-200770B
100 mg
1 g
25 g
$92.00
$240.00
$4328.00
9
(1)

Arachidonic acid is an unsaturated fatty acid that can be released from cell membranes by phospholipase A2. It serves as a precursor for the synthesis of various bioactive compounds, including prostaglandins and leukotrienes. Arachidonic acid has been shown to upregulate calpain 1 expression.

Thapsigargin

67526-95-8sc-24017
sc-24017A
1 mg
5 mg
$136.00
$446.00
114
(2)

Thapsigargin is a natural compound found in the plant Thapsia garganica. It is a potent inhibitor of the sarco/endoplasmic reticulum calcium ATPase (SERCA) pump, leading to calcium release from the endoplasmic reticulum. Thapsigargin treatment has been found to induce calpain 1 expression.

Lipopolysaccharide, E. coli O55:B5

93572-42-0sc-221855
sc-221855A
sc-221855B
sc-221855C
10 mg
25 mg
100 mg
500 mg
$98.00
$171.00
$425.00
$1560.00
12
(2)

LPS is a component of the outer membrane of Gram-negative bacteria and is widely used to induce immune responses in experimental models. LPS treatment has been reported to upregulate calpain 1 expression in various cell types.

CA 1001

58801-34-6sc-202512
25 mg
$163.00
2
(1)

Calcium ionophores are compounds that increase intracellular calcium levels by facilitating the transport of calcium ions across biological membranes. They can activate calpain 1 and upregulate its expression.

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 natural compound found in the Indian coleus plant (Coleus forskohlii). It stimulates the production of cyclic adenosine monophosphate (cAMP), which is involved in intracellular signaling. Forskolin treatment has been associated with an increase in calpain 1 expression.

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)

H2O2, or hydrogen peroxide, is a reactive oxygen species that can be generated during oxidative stress. Its presence can lead to the upregulation of calpain 1 expression in various cellular contexts.

PMA

16561-29-8sc-3576
sc-3576A
sc-3576B
sc-3576C
sc-3576D
1 mg
5 mg
10 mg
25 mg
100 mg
$41.00
$132.00
$214.00
$500.00
$948.00
119
(6)

PMA is a potent activator of protein kinase C (PKC) and has been reported to induce calpain 1 expression. The mechanisms through which PMA influences calpain 1 expression may involve PKC-dependent signaling pathways.