Date published: 2026-5-21

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IP3KB Inhibitors

IP3KB, also known as inositol 1,4,5-trisphosphate 3-kinase B, is a crucial enzyme involved in the regulation of intracellular calcium signaling pathways. Its primary function is to phosphorylate inositol 1,4,5-trisphosphate (IP3) to produce inositol 1,3,4,5-tetrakisphosphate (IP4), thereby terminating IP3-mediated calcium release from intracellular stores. This process plays a pivotal role in modulating various cellular processes, including cell proliferation, differentiation, and apoptosis.

Inhibition of IP3KB can occur through multiple mechanisms, both directly and indirectly. Direct inhibitors may target the enzymatic activity of IP3KB, disrupting its ability to phosphorylate IP3 and regulate intracellular calcium signaling. Indirect inhibitors, on the other hand, may modulate upstream signaling pathways or cellular processes that regulate IP3KB expression or activity. These inhibitors can interfere with phosphoinositide signaling pathways, calcium homeostasis, hormone receptor signaling, and transcriptional regulation, ultimately leading to the suppression or inhibition of IP3KB function. Understanding the diverse mechanisms of IP3KB inhibition provides insights into the regulation of intracellular calcium signaling.

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Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Wortmannin

19545-26-7sc-3505
sc-3505A
sc-3505B
1 mg
5 mg
20 mg
$67.00
$223.00
$425.00
97
(3)

PI3K inhibitor that disrupts phosphoinositide signaling pathways, inhibiting IP3KB indirectly by blocking the production of its substrate, phosphatidylinositol (3,4,5)-trisphosphate (PIP3).

LY 294002

154447-36-6sc-201426
sc-201426A
5 mg
25 mg
$123.00
$400.00
148
(1)

PI3K inhibitor that suppresses the production of PIP3, indirectly inhibiting IP3KB by interfering with the signaling cascade downstream of its activation by phosphoinositide 3-kinase (PI3K).

TMB-8 • HCl

53464-72-5sc-3522
sc-3522A
10 mg
50 mg
$43.00
$129.00
10
(1)

Calcium channel blocker that inhibits IP3-induced calcium release from intracellular stores, indirectly suppressing IP3KB activity by reducing the availability of its substrate, inositol trisphosphate (IP3).

2-APB

524-95-8sc-201487
sc-201487A
20 mg
100 mg
$28.00
$53.00
37
(1)

Modulator of IP3R calcium channels that interferes with IP3-mediated calcium release, indirectly inhibiting IP3KB activity by disrupting the signaling pathway downstream of IP3-induced calcium mobilization.

Raloxifene

84449-90-1sc-476458
1 g
$802.00
3
(0)

Selective estrogen receptor modulator (SERM) that can suppress IP3KB expression through estrogen receptor-mediated mechanisms, indirectly inhibiting IP3KB activity by reducing its expression levels.

BAY 11-7082

19542-67-7sc-200615B
sc-200615
sc-200615A
5 mg
10 mg
50 mg
$62.00
$85.00
$356.00
155
(1)

Inhibitor of NF-κB activation that can indirectly inhibit IP3KB expression and activity by blocking the transcriptional regulation of genes involved in the NF-κB signaling pathway, which regulates IP3KB expression.

LY 303511

154447-38-8sc-202215
sc-202215A
1 mg
5 mg
$67.00
$278.00
3
(1)

Derivative of LY294002 that inhibits PI3K/Akt signaling, indirectly suppressing IP3KB activity by interfering with downstream signaling events regulated by the PI3K pathway, which can modulate IP3KB expression and function.

Cisplatin

15663-27-1sc-200896
sc-200896A
100 mg
500 mg
$138.00
$380.00
101
(4)

Chemotherapeutic agent that can indirectly inhibit IP3KB expression and activity through various mechanisms, including DNA damage-induced activation of signaling pathways that regulate IP3KB expression and function.

Thapsigargin

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

SERCA inhibitor that disrupts calcium homeostasis by blocking calcium reuptake into the endoplasmic reticulum, indirectly inhibiting IP3KB activity by altering calcium signaling pathways that regulate its activation.

Bisphenol A

80-05-7sc-391751
sc-391751A
100 mg
10 g
$300.00
$490.00
5
(0)

Endocrine disruptor that can indirectly influence IP3KB activity through estrogen receptor-mediated mechanisms, potentially altering IP3KB expression and function by interfering with hormonal signaling pathways.