Lipoxin A4 (Synonyms: 脂氧素 A4; LXA4)

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Lipoxin A4  (Synonyms: 脂氧素 A4; LXA4) 纯度: ≥98.0%

Lipoxin A4 (LXA4) 是一种内源性脂氧合酶衍生的类二十烷酸调节剂，具有强大的抗炎和促消炎双重特性。Lipoxin A4 抑制与 ERK1/2 和 NF-kB 通路相关的人表皮角质形成细胞 (NHEK) 的增殖以及炎性细胞因子/趋化因子(如IL-6，IL-8等)的产生。Lipoxin A4 抑制血清淀粉样蛋白 A (SAA) 介导的 IL-8 释放，IC50 值为 25.74 nM。

Lipoxin A4 (Synonyms: 脂氧素 A4; LXA4)

Lipoxin A4 Chemical Structure

CAS No. : 89663-86-5

规格 价格 是否有货 数量
25μg（283.71 µM * 250 μL in Ethanol） ￥6000 In-stock

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生物活性

Lipoxin A4 (LXA4), an endogenous lipoxygenase-derived eicosanoid mediator, has potent dual pro-resolving and anti-inflammatory properties[1]. Lipoxin A4 inhibits proliferation and inflammatory cytokine/chemokine production of human epidermal keratinocytes (NHEKs) associated with the ERK1/2 and NF-kB pathways[2]. Lipoxin A4 inhibits serum amyloid A (SAA)-mediated IL-8 release with an IC50 value of 25.74 nM[3].

IC50 & Target

Human Endogenous Metabolite

 

体外研究
(In Vitro)

Lipoxin A4 (LXA4) inhibits the expression of IL-6 and IL-8 in NHEKs[2].
Lipoxin A4 downregulates the expression of cyclin D1[2].
Lipoxin A4 also suppresses the ERK1/2 phosphorylation and NF-kB-p65 nuclear translocation of NHEKs[2].
LXA4 (100 nM; preincubation for 30 minutes)inhibits the proliferation of NHEKs with or without stimulating by LPS (10 μg/mL)[2].
LXA4 pretreatment (100  nM for 30 minutes) downregulates the LPS-induced secretion and expression of HMGB1 in keratinocytes[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

Lipoxin A4 相关抗体:

Cell Proliferation Assay[2]

Cell Line: Normal human epidermal keratinocytes (NHEKs)
Concentration: 100 nM
Incubation Time: 30 minutes
Result: A significant increase in proliferation of NHEKs after 7 days of stimulation with LPS (10 μg/mL) was seen. However, there was a significant decrease in the proliferation of NHEKs when pretreated with LXA4 for 30 min.

Western Blot Analysis[1]

Cell Line: Normal human epidermal keratinocytes (NHEKs)
Concentration: 100 nM
Incubation Time: 30 minutes.
Result: HMGB1 protein levels in the cytoplasm of NHEKs were induced by LPS, which were decreased after preincubation with LXA4 but decreased in the nucleus after stimulation with LPS.

分子量

352.47

Formula

C20H32O5
CAS 号

89663-86-5
性状

液体

颜色

Colorless to light yellow

中文名称

脂氧素 A4
结构分类
  • Ketones, Aldehydes, Acids
初始来源
  • 内源性代谢物
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式

Solution, -20°C, 2 years
纯度 & 产品资料

纯度: ≥98.0%

Data Sheet (534 KB) SDS (544 KB)

COA (184 KB)

产品使用指南 (1538 KB)

参考文献

  • [1]. Feng Hu, et al. Lipoxin A4 inhibits proliferation and inflammatory cytokine/chemokine production of human epidermal keratinocytes associated with the ERK1/2 and NF-κB pathways. J Dermatol Sci. 2015 Jun;78(3):181-8.  [Content Brief]

    [2]. Steven Bozinovski, et al. Serum amyloid A opposes lipoxin A₄ to mediate glucocorticoid refractory lung inflammation in chronic obstructive pulmonary disease. Proc Natl Acad Sci U S A. 2012 Jan 17;109(3):935-40.  [Content Brief]

    [3]. Xinxin Liu, et al. Lipoxin A4 and its analog suppress inflammation by modulating HMGB1 translocation and expression in psoriasis.Sci Rep. 2017 Aug 2;7(1):7100.  [Content Brief]

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