Date published: 2026-5-30

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OSTα Inhibitors

OSTα inhibitors belong to a chemical class of compounds that specifically target and interact with the Organic Solute Transporter subunit Alpha (OSTα). OSTα is an essential component of the OST complex, which is responsible for transporting bile acids and other organic solutes across cellular membranes in the body. The OST complex is composed of two subunits, OSTα and OSTβ, with OSTα being the membrane-spanning subunit. This protein plays a crucial role in the regulation of bile acid homeostasis, cholesterol metabolism, and the enterohepatic circulation of bile acids. OSTα inhibitors exert their effects by modulating the activity or expression of the OST complex, which consequently affects the transport of bile acids and other solutes. By inhibiting OSTα, these compounds can disrupt the normal flow of bile acids between the liver and intestines, leading to alterations in bile acid composition and concentration in the body. The identification and development of OSTα inhibitors have significant implications in understanding the complexities of bile acid regulation and its relevance to various health conditions. Furthermore, studying OSTα inhibitors provides insights into the molecular basis of bile acid transport and metabolism. By identifying and characterizing these compounds, scientists can gain a deeper understanding of the molecular interactions between OSTα and its substrates, shedding light on the regulatory mechanisms governing bile acid transport and enterohepatic circulation.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Rifampicin

13292-46-1sc-200910
sc-200910A
sc-200910B
sc-200910C
1 g
5 g
100 g
250 g
$97.00
$328.00
$676.00
$1467.00
6
(1)

Rifampicin inhibits OSTα by binding directly to the protein, disrupting its normal function in bile acid transport. This interaction leads to a decrease in OSTα-mediated bile acid efflux, effectively inhibiting the protein's activity in cellular bile acid homeostasis.

Ursodeoxycholic acid

128-13-2sc-204935
sc-204935A
1 g
5 g
$52.00
$131.00
4
(0)

Ursodeoxycholic acid inhibits OSTα by altering the bile acid pool composition, which indirectly impacts the protein's activity. This change in bile acid composition can lead to reduced stimulation of OSTα, thereby inhibiting its function in bile acid transport across cell membranes.

(E)-Guggulsterone

39025-24-6sc-294461
sc-294461A
5 mg
10 mg
$510.00
$902.00
1
(0)

(E)-Guggulsterone inhibits OSTα by competitively binding to the protein, preventing its interaction with natural bile acid substrates. This inhibition reduces the efficiency of bile acid transport, directly impacting OSTα's role in maintaining bile acid homeostasis.

Cyclosporin A

59865-13-3sc-3503
sc-3503-CW
sc-3503A
sc-3503B
sc-3503C
sc-3503D
100 mg
100 mg
500 mg
10 g
25 g
100 g
$63.00
$92.00
$250.00
$485.00
$1035.00
$2141.00
69
(5)

Cyclosporin A inhibits OSTα by interfering with its expression and/or membrane localization, significantly reducing the protein's ability to transport bile acids. This effect directly diminishes OSTα's function in the regulation of bile acid homeostasis within cells.

Dehydroandrographoline

134418-28-3sc-280669
25 mg
$220.00
(0)

Dehydroandrographolide inhibits OSTα by modulating signaling pathways that downregulate the protein's expression or activity. This leads to a decrease in OSTα function, impacting its role in bile acid efflux and overall cellular bile acid regulation.

Geniposide

24512-63-8sc-279180
sc-279180A
10 mg
25 mg
$80.00
$90.00
(0)

Geniposide is a natural compound found in several plants, including Gardenia jasminoides. It has been reported to inhibit OSTα, potentially affecting bile acid and sterol metabolism.