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Merck
CN

GF342

LIF,
Human Recombinant Animal Free

Synonym(s):

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

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About This Item

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

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

Quality Level

UniProt accession no.

shipped in

dry ice

storage temp.

-10 to -25°C

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.

Analysis Note

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

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable



Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Articles

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


Lizhao Feng et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 7(23), 2002155-2002155 (2020-12-12)
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



Global Trade Item Number

SKUGTIN
GF34204053252978968