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H8416 Sigma-Aldrich

Stem Cell Factor human

SCF, recombinant, expressed in HEK 293 cells, suitable for cell culture

Synonym: SCF, c-Kit ligand

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Properties

Related Categories Cell Culture, Growth Factors and Cytokines, Hematopoietic Cytokines, Reagents and Supplements, Recombinant SCF & SCGF More...
Quality Level   200
biological source   human
recombinant   expressed in HEK 293 cells
assay   ≥95% (SDS-PAGE)
form   lyophilized powder
potency   ≤200 ng/mL ED50
quality   endotoxin tested
mol wt   dimer 35-45 kDa (glycosylated)
packaging   pkg of 5x10 μg
  pkg of 10 μg
  pkg of 100 μg
storage condition   avoid repeated freeze/thaw cycles
application(s)   cell culture | mammalian: suitable
impurities   ≤1 EU/μg
UniProt accession no.   P21583
storage temp.   −20°C
Gene Information   human ... KITLG(4254)

Description

General description

The KITLG (KIT ligand) gene is mapped to human chromosome 12q21.32.

Packaging

10 μg in poly bottle

Biochem/physiol Actions

Stem Cell Factor (SCF), also known as c-Kit ligand (KL), steel factor (SLF) and mast cell growth factor (MGF), is a 30 kDa glycoprotein with broad activities on various tissues, including hematopoietic cells, pigment cells, and primordial germ cells. SCF is secreted by endothelial cells, fibroblasts, and bone marrow stromal cells as a membrane-bound form which may be cleaved to release the soluble form. Both forms are active in promoting colony formation from murine bone marrow cells, but membrane-bound SCF is more effective in promoting hematopoieses in vivo, suggesting a role in cellular interactions between hematopoietic and stromal cells. The soluble is thought to exist in solution as a noncovalently linked dimer. SCF is structurally related to M-CSF (CSF-1) and Flt-3/Flk-2 Ligand (FL) with all three sharing a similar size, existence of transmembrane and soluble forms, four conserved cysteines, and alternative splicing exon locations, but they share little sequence homology. SCF alone is a modest colony stimulating factor. However, in the presence of other cytokines such as EPO, TPO, GM-CSF, G-CSF, M-CSF, IL-3, and IL-7, SCF is a potent costimulant that works synergistically to increase the size of myeloid, erythroid or lymphoid lineage colonies without influencing the lineage differentiation of the progenitors.

Stem Cell Factor (SCF), also known as c-Kit ligand (KL), steel factor (SLF) and mast cell growth factor (MGF), is a 30 kDa glycoprotein with broad activities on various tissues, including hematopoietic cells, pigment cells, and primordial germ cells.

Stem cell factor (SCF) of granulosa cell origin, efficiently contributes to the follicular development and oocyte maturation. SCF controls tumor development and progression. Elevated SCF gene expression is observed in hepatocellular carcinoma.

Preparation Note

SCF is expressed in human HEK 293 cells as a glycosylated monomer with an apparent molecular mass of 35-45 kDa due to glycosylation. Production in human 293 cells offers authentic glycosylation. Glycosylation contributes to stability in cell growth media and other applications.

Analysis Note

The specific activity was determined by the dose-dependent stimulation of the proliferation of human TF-1 cells (human erythroleukemic indicator cell line).

Legal Information

HumanKine is a registered trademark of Proteintech Group, Inc.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 3
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

Growth Factors in Stem Cell Biology

Stem cell biology researchers use suitable growth factors to trigger proliferation, differentiation and/or migration of stem cells. Embryonic pluripotent stem cells can differentiate into three germ ...
Keywords: Angiogenesis, Cell biology, Cell culture, Growth factors, Stem cell biology

Hematopoietic Cytokines

Hematopoietic cytokines are large family of extracellular ligands that stimulate hematopoietic cells to differentiate into eight principle types of blood cells. Numerous cytokines are involved in the...
Keywords: Cell proliferation, Clinical, Growth factors, Ligands

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Cell Culture Troubleshooting Guide

Cell culture has become one of the most fundamental techniques for modeling biological systems, and is of increasing importance in the biotechnology and pharmaceutical sectors as well as an essential...
Keywords: Antibiotics, Apoptosis, Cell attachment, Cell culture, Cryopreservation, Filtration, Growth factors, Pharmaceutical, Phase transitions

Peer-Reviewed Papers
15

References

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