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L3012

Sigma-Aldrich

Lipopolysaccharides from Escherichia coli O111:B4

purified by gel-filtration chromatography

Synonyme(s) :

LPS

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About This Item

Numéro CE :
297-473-0
Numéro MDL:
MFCD00164401
Code UNSPSC :
12352201
Nomenclature NACRES :
NA.25

Source biologique

Escherichia coli (O111:B4)

Niveau de qualité

300

Forme

lyophilized powder

Produit purifié par

gel-filtration chromatography

Impuretés

<1% Protein

Couleur

white to faint yellow

Solubilité

water: soluble

Conditions d'expédition

ambient

Température de stockage

2-8°C

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Catégories apparentées

Description générale

This product is extracted from E. coli serotype O111:B4 and purified by gel filtration. The source strain is from a private collection. This LPS serotype has been used to stimulate B-cells and induce NOS in human hepatocytes.

Application

Les lipopolysaccharides (LPS) sont des éléments constitutifs caractéristiques de la paroi cellulaire des bactéries à Gram négatif. Les LPS et leur fraction lipidique (lipide A) stimulent les cellules du système immunitaire inné par l'intermédiaire du récepteur TLR4 (Toll-Like Receptor 4), qui appartient à la famille des récepteurs de type Toll et qui reconnaît la signature moléculaire des principaux agents pathogènes (PAMP).

Actions biochimiques/physiologiques

Lipopolysaccharides (LPS) are localized in the outer layer of the membrane and are, in noncapsulated strains, exposed on the cell surface. They contribute to the integrity of the outer membrane, and protect the cell against the action of bile salts and lipophilic antibiotics.

Notes préparatoires

The product is soluble in water (5 mg/ml) or cell culture medium (1 mg/ml) yielding a hazy, faint yellow solution. A more concentrated, though still hazy, solution (20 mg/ml) has been achieved in aqueous saline after vortexing and warming to 70-80 oC. Lipopolysaccharides are molecules that form micelles in every solvent. Hazy solutions are observed in water and phosphate buffered saline. Organic solvents do not give clearer solutions. Methanol yields a turbid suspension with floaters, while water yields a homogeneously hazy solution.

Autres remarques

To gain a comprehensive understanding of our extensive range of Lipopolysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

L4391

Lipopolysaccharides from Escherichia coli O111:B4, γ-irradiated, BioXtra, suitable for cell culture

L3012

Lipopolysaccharides from Escherichia coli O111:B4, purified by gel-filtration chromatography

L4130

Lipopolysaccharides from Escherichia coli O111:B4, purified by trichloroacetic acid extraction

L3024

Lipopolysaccharides from Escherichia coli O111:B4, purified by ion-exchange chromatography, TLR ligand tested

L2630

Lipopolysaccharides from Escherichia coli O111:B4, purified by phenol extraction

L3023

Lipopolysaccharides from Escherichia coli O111:B4, Detoxified

F3665

Lipopolysaccharides from Escherichia coli O111:B4, FITC conjugate

L5293

Lipopolysaccharides from Escherichia coli O111:B4, Ready Made solution, 1 mg/mL

Pictogrammes

Skull and crossbones
GHS06

Mention d'avertissement

Danger

Mentions de danger

H300

Classification des risques

Acute Tox. 2 Oral

Code de la classe de stockage

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

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Rong Huang et al.
Bone research, 5, 17019-17019 (2017-12-22)
The activation of M1 macrophages can be achieved by stimulating them with lipopolysaccharide (LPS) and interferon-γ (IFN-γ). However, M1 can be found under physiological conditions without any pathological stimuli. This study aimed to understand the involvement of RANKL-induced M1 macrophages
Matthew G Frank et al.
Brain, behavior, and immunity, 73, 352-363 (2018-05-29)
Exposure to stressors induces anxiety- and depressive-like behaviors, which are mediated, in part, by neuroinflammatory processes. Recent findings demonstrate that treatment with the immunoregulatory and anti-inflammatory bacterium, Mycobacterium vaccae (M. vaccae), attenuates stress-induced exaggeration of peripheral inflammation and stress-induced anxiety-like
Zhongjie Li et al.
PloS one, 9(5), e97539-e97539 (2014-05-16)
Antimicrobial peptides have attracted much interest as a novel class of antibiotics against a variety of microbes including antibiotics resistant strains. In this study, a new cationic antimicrobial peptide Hp1404 was identified from the scorpion Heterometrus petersii, which is an
Susanne A Wolf et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 23(9), 3121-3128 (2009-05-13)
To understand the link between peripheral immune activation and neuronal precursor biology, we investigated the effect of T-cell activation on adult hippocampal neurogenesis in female C57Bl/6 mice. A peripheral adaptive immune response triggered by adjuvant-induced rheumatoid arthritis (2 microg/microl methylated
Norihiko Takeda et al.
Genes & development, 24(5), 491-501 (2010-03-03)
Hypoxic response and inflammation both involve the action of the hypoxia-inducible transcription factors HIF-1alpha and HIF-2alpha. Previous studies have revealed that both HIF-alpha proteins are in a number of aspects similarly regulated post-translationally. However, the functional interrelationship of these two
Afficher tous les articles scientifiques apparentés

Articles

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.

Contenu apparenté

Lipopolysaccharides

Lipopolysaccharide (LPS) is a major component of Gram-negative bacteria, important for microbiological research.

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