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Merck
모든 사진(1)

주요 문서

L5293

Sigma-Aldrich

Lipopolysaccharides from Escherichia coli O111:B4

Ready Made solution, 1 mg/mL

동의어(들):

LPS

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크기 선택

2 ML
₩585,249

₩585,249


출고 가능일2025년 4월 09일세부사항


벌크 견적 요청

크기 선택

보기 변경
2 ML
₩585,249

About This Item

CAS Number:
MDL number:
UNSPSC 코드:
12352201
NACRES:
NA.25

₩585,249


출고 가능일2025년 4월 09일세부사항


벌크 견적 요청

생물학적 소스

Escherichia coli (O111:B4)

Quality Level

양식

aqueous solution

농도

1 mg/mL

색상

colorless to faint yellow

solubility

water: soluble

배송 상태

wet ice

저장 온도

2-8°C

유사한 제품을 찾으십니까? 방문 제품 비교 안내

애플리케이션

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).
Lipopolysaccharides from Escherichia coli O111:B4 has been used:
  • to stimulate an inflammatory response in porcine liver tissues in-vivo[1] and piglet ileum tissues ex vivo[2]
  • to stimulate Ex vivo natural killer(NK) cells[3] and hepatic B cells[4]
  • to induce arthritis in a standard rabbit model[5]

생화학적/생리학적 작용

Lipopolysaccharides (LPS) are distributed on the outer layer of the membrane and in non-capsulated strains, present on the cell surface. LPS maintains the outer membrane integrity. In addition, it protects the cell from bile salts stress and lipophilic antibiotics.[6]

제조 메모

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.

기타 정보

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

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

개인 보호 장비

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


가장 최신 버전 중 하나를 선택하세요:

시험 성적서(COA)

Lot/Batch Number

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특정 버전이 필요한 경우 로트 번호나 배치 번호로 특정 인증서를 찾을 수 있습니다.

이 제품을 이미 가지고 계십니까?

문서 라이브러리에서 최근에 구매한 제품에 대한 문서를 찾아보세요.

문서 라이브러리 방문

Effects of dietary beta-glucans supplementation on cytokine expression in porcine liver
Ryan M, et al.
Journal of Animal Science, 90(suppl-4), 40-42 (2012)
Effect of maternal seaweed extract supplementation on suckling piglet growth, humoral immunity, selected microflora, and immune response after an ex vivo lipopolysaccharide challenge
Leonard SG, et al.
Journal of Animal Science, 90(2), 505-514 (2012)
6 Analysis of Lipopolysaccharides of Gram-Negative Bacteria
Methods in Microbiology, 18(5), 157-207 (1985)
Imaging of normal and pathologic joint synovium using nonlinear optical microscopy as a potential diagnostic tool
Tiwari N, et al.
Journal of Leukocyte Biology, 15(5), 056001-056001 (2010)
Ryan J Lu et al.
Nature aging, 1(8), 715-733 (2021-09-14)
Neutrophils are the most abundant human white blood cell and constitute a first line of defense in the innate immune response. Neutrophils are short-lived cells, and thus the impact of organismal aging on neutrophil biology, especially as a function of

문서

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

관련 콘텐츠

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

질문

1–5 / 5 질문  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 답변
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 답변
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. What is recommended for the storage of longer duration once opened? Is it better to keep at 2°C-8°C for 1-2 years or to freeze it (-80°C or -20°C) and thaw it gently when needed?

    1 답변
    1. This product is stable at 2-8°C at least until the assigned retest date, provided that no contaminants have been introduced. The recommended retest date is lot specific and reported in the product Certificate of Analysis. The stability of the product in dilute form or beyond the assigned retest date has not been determined. However, LPS products prepared from the powder form may be stored in 1 mg/mL aliquots for up to 2 years at -20°C. The storage of solutions at -80°C has not been determined. Please see the link below to review additional information regarding the stability and preparation of Lipopolysaccharides:
      https://www.sigmaaldrich.com/technical-documents/protocol/clinical-testing-and-diagnostics-manufacturing/bacteriology/lipopolysaccharides

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  4. What solvent is the product L5293-2ML dissolved in?

    1 답변
    1. The solvent information for this product is proprietary, but it is acknowledged to contain water, while the remaining components remain undisclosed.

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  5. Bonjour, Comment ce LPS a t'il été extrait / Purifié ?

    1 답변
    1. This product is a sterile filtered solution. The extraction method for this material is considered proprietary, however it is chromatographically purified.

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