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L2654

Sigma-Aldrich

Lipopolysaccharides from Escherichia coli O26:B6

γ-irradiated, BioXtra, suitable for cell culture

Synonym(s):

LPS

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1 MG
$65.10

$65.10

Estimated to ship onMarch 23, 2025

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1 MG
$65.10

About This Item

EC Number:
297-473-0
MDL number:
MFCD00164401
UNSPSC Code:
12352211
NACRES:
NA.75

$65.10

Estimated to ship onMarch 23, 2025

Request a Bulk Order

biological source

Escherichia coli (O26:B6)

Quality Level

300

sterility

γ-irradiated

product line

BioXtra

form

lyophilized powder

purified by

gel-filtration chromatography

technique(s)

cell culture | mammalian: suitable

impurities

<5% Protein (Lowry)

solubility

H2O: 5 mg/mL, slightly hazy

storage temp.

2-8°C

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Application

Lipopolysaccharides from Escherichia coli 026:B6 was used to elicit the secretion of cytokines by human PBMC[1], murine bone marrow dendritic cells[2] and rat astrocytes.[3]
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).

Biochem/physiol Actions

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.

Reconstitution

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.

Other Notes

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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Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H300

Hazard Classifications

Acute Tox. 2 Oral

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000381521
0000381521
0000242756
108M4192V
12180308

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David Gozal et al.
Sleep, 33(3), 319-325 (2010-03-27)
Sleep disordered breathing in children is associated with severity-dependent increases in excessive daytime sleepiness (EDS). TNF-alpha is an inflammatory cytokine that has been implicated in EDS. Since, at any given level of apnea-hypopnea index, there is significant variability in EDS
Ø Salvesen et al.
Journal of neuroinflammation, 14(1), 106-106 (2017-05-24)
The cellular prion protein (PrP In order to explore putative roles for PrP All LPS-treated goats displayed clinical signs of sickness behavior, which were of significantly (p < 0.01) longer duration in animals without PrP Our data suggest that PrP
S Ménard et al.
Gut, 53(6), 821-828 (2004-05-13)
Probiotic bacteria have a beneficial effect on intestinal inflammation. In this study, we have examined the effect of lactic acid and commensal Gram positive (+) bacteria conditioned media (CM) on tumour necrosis factor alpha (TNF-alpha) release and the mechanisms involved.
Peta J O'Connell et al.
Blood, 107(3), 1010-1017 (2005-10-15)
Adaptive immunity is triggered at the immune synapse, where peptide-major histocompatibility complexes and costimulatory molecules expressed by dendritic cells (DCs) are physically presented to T cells. Here we describe transmission of the inflammatory monoamine serotonin (5-hydroxytryptamine [5-HT]) between these cells.
Asad Ali et al.
The Journal of steroid biochemistry and molecular biology, 180, 73-80 (2018-02-07)
Emerging evidence suggests that maternal or developmental vitamin D (DVD) deficiency is a risk factor for Autism Spectrum Disorders. A well-established association has also been found between gestational infection and increased incidence of autism. Placenta mediates the maternal immune response
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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.

Questions

  1. LPS（Product number:L 2654）はTLR2に結合しますか？

    1 answer

    1. Lipopolysaccarides from Escherichia coli O26:B6 are expected to only interact with Toll-like receptor 4 (TLR4). Similar lipopolysaccharides from Porphyromonas gingivalis have demonstrated the ability to bind with both TLR2 and TLR4. This observation is described more fully in the peer-reviewed publication, "Effects of serotype and species dependency of bacterial lipopolysaccharides in human melanocytes from lightly and darkly-pigmented skin," and in its associated citations. A link to this article from PubMed Central can be found here:
      https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10074968/

      Please see the link below to review product SMB00610, LPS from Porphyromonas gingivalis"
      https://www.sigmaaldrich.com/product/sigma/smb00610

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