Merck
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SRP6287

Sigma-Aldrich

LIF human

recombinant, expressed in HEK 293 cells, ≥95% (SDS-PAGE)

Synonym(s):
CDF, DIA, HILDA, LIF, MLPLI
NACRES:
NA.32

recombinant

expressed in HEK 293 cells

assay

≥95% (SDS-PAGE)

form

lyophilized powder

mol wt

calculated mol wt 19.9 kDa (with Gly-Pro at the N- terminus)
observed mol wt 35-45 kDa (DTT-reduced.Ser 23 is the predicted N-terminus .)

impurities

<1 EU/μg endotoxin (LAL test)

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... LIF(3976)

General description

Leukemia inhibitory factor (LIF) is a secreted pleiotropic glycoprotein which is a member of the gp130 signaling of interleukin-6 (IL-6) family cytokines.[1][2] This protein was originally identified as a protein that prevented the growth of a leukemic cell line.[3]

Biochem/physiol Actions

Leukemia inhibitory factor (LIF) suppresses the differentiation of myoblasts, and inhibits the activation of caspase-3 and blocks the reduction in Bcl-xL (B-cell lymphoma-extra large) levels, thus, preventing doxorubicin-induced apoptosis. Along with transforming growth factor β2 (TGFβ2)/fibroblast growth factor 2 (FGF2), LIF regulates nephrogenesis. It facilitates tubular regeneration following acute kidney failure. It plays a crucial role in neuroprotective pathways induced by preconditioning-induced oxidative stress.[1] LIF is capable of maintaining the totipotency of embryonic stem cells.[3] It is also involved in controlling the differentiation of embryonic stem cells, hematopoietic and neuronal cells.[4]

Physical form

Sterile filtered through a 0.22 micron filter. Lyophilized from 1 x PBS, pH 7.4. Generally 5-8% Mannitol or trehalose is added as a protectant before lyophilization.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in sterile deionized water to a concentration of 50 μg/mL. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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