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Merck
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Key Documents

GF342

Sigma-Aldrich

LIF,
Human Recombinant Animal Free

Sinónimos:

Leukemia Inhibitory Factor, Emfilermin, MLPLI, HILDA, D-FACTOR

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About This Item

UNSPSC Code:
12352202
eCl@ss:
32160405
NACRES:
NA.75

impurities

<0.1 μg/mg protein endotoxin (<1 EU/μg)

Quality Level

100

UniProt accession no.

P15018

shipped in

dry ice

General description

LIF is a pleiotrophic factor produced by multiple cell types including T cells, myelomoncytic lineages, fibroblasts, liver, heart and melanoma. LIF promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Other activities include the stimulation of acute phase protein synthesis by hepatocytes, stimulation of differentiation of cholinergic nerves, and suppression of adipogenesis by inhibiting the lipoprotein lipase in adipocytes. While human LIF is active on mouse cells and is widely used in the maintenance of murine ESC to prevent spontaneous differentiation, mouse LIF is not active on human cells due to its inability to bind to the human LIF receptor.
Recombinant human LIF is a 19.6 kDa protein containing 180 amino acids residues including three disulfide bonds.

Quality

Determined by its ability to stimulate the proliferation of human TF-1 cells. The expected ED50 is ≤0.1 ng/ml, corresponding to a specific activity of ≥1 x 10^7 units/mg.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificados de análisis (COA)

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Canavan disease (CD) is a fatal leukodystrophy caused by mutation of the aspartoacylase (ASPA) gene, which leads to deficiency in ASPA activity, accumulation of the substrate N-acetyl-L-aspartate (NAA), demyelination, and spongy degeneration of the brain. There is neither a cure

Artículos

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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