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安全信息

L5158

Sigma-Aldrich

白血病抑制因子 来源于小鼠

≥95% (SDS-PAGE), recombinant, expressed in E. coli, buffered aqueous solution, suitable for cell culture

别名:

LIF

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About This Item

MDL编号:
MFCD00283681
UNSPSC代码:
12352202
NACRES:
NA.77

产品名称

白血病抑制因子 来源于小鼠, LIF, recombinant, expressed in E. coli, 10 μg/ml, buffered aqueous solution, suitable for cell culture

重组

expressed in E. coli

质量水平

200

方案

≥95% (SDS-PAGE)

表单

buffered aqueous solution

质量

endotoxin tested

技术

cell culture | mammalian: suitable

储存温度

2-8°C

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应用

来自小鼠的白血病抑制因子已用于：
  • 作为共培养加富培养基组分
  • 作为培养心肌细胞的杜氏改良Eagle培养基(DMEM)/F12培养基的补充剂
  • 作为维持胚胎干细胞生长的维持培养基组分
  • 处理卵巢培养物的卵巢

生化/生理作用

白血病抑制因子（LIF）是一种多效性糖蛋白，最初被认为能够抑制小鼠骨髓白血病细胞系M1的增殖，同时诱导其分化成巨噬细胞。后来鉴定出LIF的其他活性，已知LIF具有多种别名，包括DIF、D因子、DIA、DRF、CNDF、HILDA、HSF-III和MLPLI。人LIF通过一个受体发挥作用，该受体包含一条190 kDa LIF-结合α-链（130 kDa，小鼠）和一条130 kDa信号传导β-链（gp130），它是CNTF、OSM、L-6和IL-11的共同受体。因此，它是细胞因子受体超家族的gp130家族的成员。已在多种细胞上鉴定了LIF受体，包括单核细胞、肝脏细胞、胎盘细胞和胚胎干细胞。天然LIF是高度糖基化的，表观分子量为32kDa至62kDa，具体取决于来源，但是无糖基化似乎不影响其生物活性。LIF由单个基因编码，它在人或小鼠中分泌为含有180个氨基酸的单链糖蛋白并具有保守二硫键。人和小鼠LIF具有78％的序列同源性。人LIF可以激活小鼠细胞，但小鼠LIF不能激活人体细胞。

外形

溶于含有0.02％TWEEN® 20的磷酸盐缓冲盐水

分析说明

利用M1小鼠细胞培养物检测小鼠LIF的增殖活性。

法律信息

TWEEN is a registered trademark of Croda International PLC

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

法规信息

常规特殊物品

从最新的版本中选择一种：

分析证书(COA)

Lot/Batch Number
0000296351
0000296349
0000296351
0000296349
0000145913

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  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. What is the sequence of the protein Leukemia Inhibitory Factor, Product L5158?

    The partial sequence is reported on the SwissProt website under the accession number P09056. The recombinant has 1 more amino acid but the supplier has kept details as proprietary.

  4. How is this recombinant protein, Leukemia Inhibitory Factor, Product L5158, prepared?

    The protein is expressed in E. coli as a GST-tagged fusion protein.  After purification, the tag is removed by thrombin treatment to product the final protein sequence.

  5. Is Leukemia Inhibitory Factor, Product L5158, the same as the LIF from Chemicon?

    Chemicon holds the patent for manufacture of mouse recombinant LIF.  The product from Sigma-Aldrich is identical to that from Chemicon.

  6. 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.

  7. 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. 

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

    Ask a Scientist here.

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Mature hematopoietic cells, like all other terminally differentiated lineages, arise during ontogeny via a series of increasingly restricted intermediates. Hematopoietic progenitors have their origin in the mesoderm, which gives rise to hemangioblasts that can differentiate into endothelial or endocardial precursors
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Advanced science (Weinheim, Baden-Wurttemberg, Germany), 7(23), 2001854-2001854 (2020-12-12)
There is an unmet demand for microfluidics in biomedicine. This paper describes contactless fabrication of microfluidic circuits on standard Petri dishes using just a dispensing needle, syringe pump, three-way traverse, cell-culture media, and an immiscible fluorocarbon (FC40). A submerged microjet
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Leukaemia inhibitory factor (LIF) can induce macrophage differentiation in M1 murine myeloid leukaemic cells and suppress their proliferation in vitro. It does not stimulate the proliferation of normal progenitor cells and is apparently distinct from known colony-stimulating factors. We have
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Leukemia Inhibitory Factor (LIF) Protein

Leukemia Inhibitory Factor (LIF) is a stem cell growth factor used for the in vitro culture of pluripotent mouse embryonic stem cells (ES cells).

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