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Merck
모든 사진(1)

Key Documents

GF342

Sigma-Aldrich

LIF,
Human Recombinant Animal Free

동의어(들):

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

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About This Item

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

불순물

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

Quality Level

UniProt 수납 번호

배송 상태

dry ice

일반 설명

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.

품질

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 Code

11 - Combustible Solids

WGK

WGK 1

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable


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