CAS號	14003-96-4	產(chǎn)地	國產(chǎn)
規(guī)格	5mg	級別	化工級
證書	ISO系列證書

4μ8C (Synonyms: IRE1 Inhibitor III)

4μ8C (IRE1 Inhibitor III)是IRE1α的小分子抑制劑。

生物活性

4μ8C (IRE1 Inhibitor III) is a small-molecule inhibitor of IRE1α.

體外研究(In Vitro)

When applies to the media of ER stressed cultured cells, 4μ8C (IRE1 Inhibitor III) inhibits Xbp1 splicing in a concentration-dependent manner. 4μ8C dissociates slowly from IRE1, but ishout of inhibitor leads to rapid recovery of Xbp1 splicing in cells^[1].The IRE1 endoribonuclease inhibitor 4μ8c prevents the splicing of the XBP1 mRNA in response to ER stress caused by mutant proinsulin production^[2]. The inositol-requiring enzyme 1α (IRE1α) is a serine-threonine kinase that plays crucial roles in activating the unfolded protein response. 4μ8C treatment dramatically inhibits IL-4 production by CD4⁺ T cells under Th0 conditions because both the IL-4 levels in the culture supernatant and the percentage of IL-4 positive cells are reduced by 4μ8C treatment. In addition, both IL-5 and IL-13 production are significantly reduced upon treatment with 4μ8C^[3].

體內(nèi)研究(In Vivo)

4μ8c (IRE1 Inhibitor III) (i.p. injection; 10 mg/kg/day for 4 more weeks) leads to a significant reduction (45.2%) in atherosclerotic lesion area in en face aorta preparations. 4μ8c can effectively mitigate plaque development in mice^[4].
4μ8C (orally; 10, 50, or 100 mg/kg) suppresses passive cutaneous anaphylaxis (PCA) in mice (ED50 = 25.1 mg/kg)^[5].
4μ8C reverses the ER stress-dependent loss of several known RIDD targets, with an EC₅₀ of approximately 4 μM, approximating that of inhibition of XBP1 target gene activation^[1].

Animal Model:	ApoE^-/- mice^[4]
Dosage:	10 mg/kg
Administration:	I.p. injection; daily; for 4 more weeks
Result:	Led to a significant reduction (45.2%) in atherosclerotic lesion area in en face aorta preparations.

分子量：204.18

性狀：Solid

Formula：C₁₁H₈O₄

CAS 號：14003-96-4

運輸條件：Room temperature in continental US; may vary elsewhere.

儲存方式

Powder	-20°C	3 years
In solvent	-80°C	6 months
	-20°C	1 month

溶解性數(shù)據(jù)

In Vitro:

DMSO : ≥ 27 mg/mL (132.24 mM)

* "≥" means soluble, but saturation unknown.

配制儲備液

濃度溶劑體積質(zhì)量	1 mg	5 mg	10 mg

1 mM	4.8976 mL	24.4882 mL	48.9764 mL
5 mM	0.9795 mL	4.8976 mL	9.7953 mL
10 mM	0.4898 mL	2.4488 mL	4.8976 mL

請根據(jù)產(chǎn)品在不同溶劑中的溶解度選擇合適的溶劑配制儲備液；一旦配成溶液，請分裝保存，避免反復(fù)凍融造成的產(chǎn)品失效。
儲備液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 儲存時，請在 6 個月內(nèi)使用，-20°C 儲存時，請在 1 個月內(nèi)使用。

In Vivo:

以下溶解方案都請先按照 In Vitro 方式配制澄清的儲備液，再依次添加助溶劑：

——為保證實驗結(jié)果的可靠性，澄清的儲備液可以根據(jù)儲存條件，適當(dāng)保存；體內(nèi)實驗的工作液，建議您現(xiàn)用現(xiàn)配，當(dāng)天使用；以下溶劑前顯示的百
分比是指該溶劑在您配制終溶液中的體積占比；如在配制過程中出現(xiàn)沉淀、析出現(xiàn)象，可以通過加熱和/或超聲的方式助溶

1.

請依序添加每種溶劑： 10% DMSO 40% PEG300 5% Tween-80 45% saline
Solubility: ≥ 2.08 mg/mL (10.19 mM); Clear solution

參考文獻

[1]. Cross BC, et al. The molecular basis for selective inhibition of unconventional mRNA splicing by an IRE1-binding small molecule. Proc Natl Acad Sci U S A. 2012 Apr 10;109(15):E869-78. [Content Brief]

[2]. Zhang L, et al. IRE1 inhibition perturbs the unfolded protein response in a pancreatic β-cell line expressing mutant proinsulin, but does not sensitize the cells to apoptosis. BMC Cell Biol. 2014 Jul 10;15:29. [Content Brief]

[3]. Kemp K, et al. The serine-threonine kinase inositol-requiring enzyme 1α (IRE1α) promotes IL-4 production in T helper cells. J Biol Chem. 2013 Nov 15;288(46):33272-82.

[4]. Tufanli O, et al. Targeting IRE1 with small molecules counteracts progression of atherosclerosis. Proc Natl Acad Sci U S A. 2017 Feb 21;114(8):E1395-E1404. [Content Brief]

[5]. Nam ST, et al. Suppression of IgE-mediated mast cell activation and mouse anaphylaxis via inhibition of Sykactivation by 8-formyl-7-hydroxy-4-methylcoumarin, 4μ8C. Toxicol Appl Pharmacol. 2017 Oct 1;332:25-31. [Content Brief]

注：產(chǎn)品僅用于科研