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Merck

L4391

Sigma-Aldrich

Lipopolysaccharides from Escherichia coli O111:B4

γ-irradiated, BioXtra, suitable for cell culture

Sinónimos:

LPS

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About This Item

Número CE:
Número MDL:
Código UNSPSC:
12352211
NACRES:
NA.75

origen biológico

Escherichia coli (O111:B4)

Nivel de calidad

esterilidad

γ-irradiated

Línea del producto

BioXtra

Formulario

lyophilized powder

purificado por

gel-filtration chromatography

condiciones de almacenamiento

desiccated

técnicas

cell based assay: suitable
cell culture | mammalian: suitable

impurezas

<1% Protein (Lowry)

solubilidad

H2O: 5 mg/mL, slightly hazy

aplicaciones

clinical research
life science and biopharma

temp. de almacenamiento

2-8°C

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Descripción general

Lipopolysaccharides (LPS) are intricate molecules consisting of lipids and polysaccharides, predominantly present in the outer membrane of Gram-negative bacteria. Comprising lipid A, the core oligosaccharide (core), and the O-specific polysaccharide or O antigen (OAg), LPS is anchored to the outer bacterial membrane, with lipid A primarily responsible for its associated toxicity. Functioning as a potent activator of the proinflammatory response, LPS engages various mammalian cells, including macrophages, monocytes, and endothelial cells. While serving a protective role for Gram-negative bacteria against environmental stress, LPS also triggers recognition by the innate immune system during infections.

Aplicación

This LPS serotype has been used to stimulate B-cells and induce NOS in human hepatocytes.
Lipopolysaccharides (LPSs) are characteristic components of the cell wall of Gram-negative bacteria. LPS and its lipid A moiety stimulate cells of the innate immune system by the Toll-like receptor 4 (TLR4), a member of the Toll-like receptor protein family, which recognizes common pathogen-associated molecular-patterns (PAMPs).

Acciones bioquímicas o fisiológicas

LPS is a major constituent of the cell wall of most gram negative bacteria. It is a highly immunogenic antigen with the ability to enhance immune responses to soluble antigens. LPS also acts as a specific mitogen for bone marrow derived B lymphocytes from mice, rabbits, chickens, cows, hamsters, and humans.

Características y beneficios

  • High-purity compound suitable for a wide variety of research applications

Reconstitución

Lipopolysaccharides are supplied as lyophilized, γ-irradiated powders. To reconstitute, add 1 ml sterile balanced salt solution or tissue culture medium to the vial (1 mg) and gently swirl until the powder dissolves. Reconstituted product may be further diluted to desired working concentrations using sterile balanced salt solution or tissue culture medium.

Otras notas

For additional information on our range of Biochemicals, please complete this form.
To gain a comprehensive understanding of our extensive range of Lipopolysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

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Pictogramas

Skull and crossbones

Palabra de señalización

Danger

Frases de peligro

Clasificaciones de peligro

Acute Tox. 2 Oral

Código de clase de almacenamiento

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

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable


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Christopher R Shaler et al.
PLoS biology, 15(6), e2001930-e2001930 (2017-06-21)
Superantigens (SAgs) are potent exotoxins secreted by Staphylococcus aureus and Streptococcus pyogenes. They target a large fraction of T cell pools to set in motion a "cytokine storm" with severe and sometimes life-threatening consequences typically encountered in toxic shock syndrome
Jennifer Vandooren et al.
Haematologica, 102(10), 1671-1682 (2017-08-05)
Lipopolysaccharides or endotoxins elicit an excessive host inflammatory response and lead to life-threatening conditions such as endotoxemia and septic shock. Lipopolysaccharides trigger mobilization and stimulation of leukocytes and exaggerated production of pro-inflammatory molecules including cytokines and proteolytic enzymes. Matrix metalloproteinase-9
Chuan Yan et al.
Journal of hepatology, 63(2), 420-428 (2015-04-02)
Chronic inflammation is a major etiological factor for hepatocellular carcinoma (HCC), but how immune cells respond in the initiation of hepatocarcinogenesis remains uncharacterized. This study aims to investigate the response and roles of neutrophils in early hepatocarcinogenesis. By inducible expression
Kelly L Brown et al.
Journal of immunology (Baltimore, Md. : 1950), 186(9), 5497-5505 (2011-03-29)
The human cathelicidin peptide, LL-37, is a host defense peptide with a wide range of immunomodulatory activities and modest direct antimicrobial properties. LL-37 can exert both pro- and anti-inflammatory effects and can modulate the proinflammatory responses of human peripheral blood
Zhuoran Yin et al.
Neurobiology of aging, 55, 115-122 (2017-04-25)
Alzheimer's disease (AD) is strongly associated with microglia-induced neuroinflammation. Particularly, Aβ plaque-associated microglia take on an "activated" morphology. However, the function and phenotype of these Aβ plaque-associated microglia are not well understood. We show hyperreactivity of Aβ plaque-associated microglia upon

Artículos

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

Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.

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