Merck
CN
所有图片(2)

文件

L2630

Sigma-Aldrich

脂多糖 来源于大肠杆菌 0111:B4

purified by phenol extraction

登录查看公司和协议定价
所有图片(2)
别名:
LPS
EC 号:
297-473-0
MDL编号:
MFCD00164401
NACRES:
NA.25

生物来源

Escherichia coli (O111:B4)

质量水平

300

形式

lyophilized powder

纯化方式

phenol extraction

技术

ELISA: suitable
cell based assay: suitable
ligand binding assay: suitable

杂质

≤3.00% protein (Lowry-TCA)

颜色

off-white to faint yellow

溶解性

water: soluble

应用

cell analysis
clinical research
life science and biopharma

运输

ambient

储存温度

2-8°C

正在寻找类似产品? Visit 产品对比指南

相关类别

一般描述

脂多糖是一种糖脂，由与脂肪酸连接的碳水化合物组成。脂多糖（LPS）是革兰氏阴性菌细胞壁的特征性成分。典型的LPS分子具有脂质A（一种基于葡糖胺的磷脂）、一个相对短的核心寡糖以及一个远端的多糖（O-抗原）。LPS有助于外膜的完整性，并可保护细胞免受胆汁盐和亲脂性抗生素的作用。它们通过TLR2和TLR4（toll样受体）对宿主细胞进行刺激。这种刺激可导致各种促炎细胞因子的生成，例如TNFα（肿瘤坏死因子）、IL-1（白细胞介素1）和IL-6。
该产品是从大肠杆菌血清型O111:B4中经酚抽提的。来源菌株来自私人保藏。该LPS血清型已用于刺激B细胞并在人肝细胞中诱导NOS（ 一氧化氮合酶）。

应用

来源于大肠杆菌 O111:B4的脂多糖(LPS)已用于：

  • 刺激巨噬细胞
  • 小鼠 LPS 预处理
  • 诱导小鼠急性肾损伤
  • 诱导小鼠急性呼吸窘迫综合征 (ARDS) ，以研究骨髓间充质干细胞 (BMSC) 来源外泌体的抗炎作用
  • 诱导重症急性呼吸综合征冠状病毒 2 (SARS-CoV-2) 感染小鼠的高炎症状态
脂多糖（LPS）是革兰氏阴性菌细胞壁的特征组分。LPS及其脂质A部分可通过能够识别常见的病原体相关分子模式（PAMP）的Toll样受体蛋白家族成员Toll样受体4（TLR4）刺激先天性免疫系统细胞。

生化/生理作用

脂多糖 (LPS) 是外膜的组成部分，使外膜可透过疏水性分子，如使革兰氏阴性菌具有天然耐药性的抗菌物质。LPS 参与细菌-宿主相互作用，调节宿主系统反应。

制备说明

该产物可溶于水 (5 mg/ml)或细胞培养基（1 mg/ml），产生模糊的淡黄色溶液。以中更为浓缩但仍然模糊的溶液（20 mg/ml）可形成于涡旋并升温至70-80oC后。脂多糖是在每种溶剂中都形成胶束的分子。在水和磷酸盐缓冲液中都能观察到模糊的溶液。有机溶剂也不会产生更为清澈的溶液。甲醇可产生具有漂浮物的混浊悬浮液，而水则能产生均匀模糊的溶液。

其他说明

为了全面了解我们针对客户研究提供的各种脂多糖产品，建议您访问我们的碳水化合物分类页面。
For additional information on our range of Biochemicals, please complete this form.

相关产品

产品编号
说明
价格

象形图

Skull and crossbones
GHS06

警示用语：

Danger

危险声明

H300

危险分类

Acute Tox. 2 Oral

储存分类代码

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

分析证书(COA)

输入产品批号来搜索 分析证书(COA) 。批号可以在产品标签上"批“ （Lot或Batch）字后找到。

已有该产品？

为方便起见，与您过往购买产品相关的文件已保存在文档库中。

访问文档库

难以找到您所需的产品或批次号码？

在网站页面上，产品编号会附带包装尺寸/数量一起显示（例如：T1503-25G）。请确保 在“产品编号”字段中仅输入产品编号 (示例: T1503).

示例

T1503
货号
-
25G
包装规格/数量

其它示例：

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

输入内容 1.000309185)

遇到问题？欢迎随时联系我们技术服务 寻求帮助

批号可以在产品标签上"批“ （Lot或Batch）字后面找到。

Aldrich 产品

  • 如果您查询到的批号为 TO09019TO 等，请输入去除前两位字母的批号：09019TO。

  • 如果您查询到的批号含有填充代码（例如05427ES-021），请输入去除填充代码-021的批号：05427ES。

  • 如果您查询到的批号含有填充代码（例如 STBB0728K9），请输入去除填充代码K9的批号：STBB0728。

未找到您寻找的产品？

部分情况下，可能未在线提供COA。如果搜索不到COA，可在线索取。

索取COA

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. How concentrated a stock solution can I make of Product L2630, Lipopolysaccarides (LPS)?

    One can try to make a 20 mg/mL solution at 70-80°C in saline, with vortexing and warming.  However, the solution will be hazy, because of the nature of LPS to form micelles in solutions like water or PBS.

  6. What is the importance of the "purified by phenol extraction" description for Product L2630, Lipopolysaccarides (LPS)?

    Different extraction methods for LPS leave different levels of potential nucleic acid and protein contaminations.  Phenol extraction can leave up to 60% RNA and <1% protein present.

  7. What is the molecular weight of Product L2630, Lipopolysaccarides (LPS)?

    We have not determined the molecular weight of this item. One reference, J. Biol. Chem., 250, 2911 (1975), states approximate values of 90,000 and 0.9-1.5 million, by both sedimentation velocity and gel filtration, for two forms of LPS that may be present.

  8. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Glycolipid biosurfactants: Biosynthesis and related potential applications in food industry
Ashby R D, et al.
Journal of Separation Science, 307-334 (2023)
Corticotropin releasing factor receptor 1 (CRF1) and CRF2 agonists exert an anti-inflammatory effect during the early phase of inflammation suppressing LPS-induced TNF-alpha release from macrophages via induction of COX-2 and PGE2.
Tsatsanis C et al.
Journal of Cellular Physiology, 210, 774-774 (2007)
Tingting Wang et al.
Journal of gastroenterology, 54(9), 804-818 (2019-05-01)
Ulcerative colitis (UC) is characterized by chronic inflammation in the colon and epigenetic factors underlying the occurrence. Circular RNAs (circRNAs) have been under intensive focus due to the circular construct and gene-regulating functions. However, the changes and roles of circRNAs
Lei Li et al.
Shock (Augusta, Ga.), 51(6), 770-779 (2018-12-19)
Long noncoding RNAs (lncRNAs), once thought to be transcriptional noise, have been recently shown to regulate a variety of biological processes. However, their roles in the inflammatory response are largely unexplored. In this study, we performed high-throughput sequencing to identify
Gut ACE2 Expression, Tryptophan Deficiency, and Inflammatory Responses The Potential Connection That Should Not Be Ignored During SARS-CoV-2 Infection
Qin W-H, et al.
Cellular and molecular gastroenterology and hepatology, 12(4) , 1514-1516 (2021)
查看所有相关文献

商品

Lipopolysaccharides for Research – Structure, Function & Applications

Explore the structure, function, and diverse applications of Lipopolysaccharides. Discover their role in bacteria, serological specificity, and research potential.

我们的科学家团队拥有各种研究领域经验，包括生命科学、材料科学、化学合成、色谱、分析及许多其他领域.

联系技术服务部门