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S1577

Sigma-Aldrich

Stromal Cell-Derived Factor 1α/pre-B Cell Growth Stimulating Factor human

recombinant, expressed in E. coli, lyophilized powder, ≥97% (SDS-PAGE), suitable for cell culture

Synonyme(s) :

SDF-1, SDF1, SDF-1α

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About This Item

Code UNSPSC :
12352202
Nomenclature NACRES :
NA.32

Source biologique

human

Niveau de qualité

Produit recombinant

expressed in E. coli

Pureté

≥97% (SDS-PAGE)

Forme

lyophilized powder

Puissance

≤50 ng/mL EC50

Conditionnement

pkg of 10 μg

Conditions de stockage

avoid repeated freeze/thaw cycles

Technique(s)

cell culture | mammalian: suitable

Impuretés

≤1 EU/μg protein Endotoxin

Couleur

white

Numéro d'accès UniProt

Conditions d'expédition

dry ice

Température de stockage

−20°C

Informations sur le gène

human ... CXCL12((6387)

Description générale

Stromal Cell-Derived Factor 1α (SDF-1α) or pre-B Cell Growth Stimulation Factor (PBSF) is an 8 kDa chemokine peptide. SDF-1 was identified using signal sequence trap cloning. With this method, cDNAs have been cloned using mouse and human stromal cell lines. This cytokine is widely accepted as a CXC chemokine of the intercrine-macrophage inflammatory protein superfamily. The gene has been mapped to chromosome 10q and is encoded by 4 exons. Expression of the human SDF1 gene is abundant in the pancreas, spleen, ovary, and small intestine. The presence of a GC-rich sequence and the lack of a TATA box in the 5∅-flanking region of the gene are consistent with ubiquitous expression.

Actions biochimiques/physiologiques

SDF-1α functions as a pre-B cell growth factor in the presence of IL-7 (interleukin-7) and a potent chemoattractant for T-lymphocytes and monocytes. It has also been found to be a ligand for CXCR4 (chemokine receptor type 4) or the orphan receptor LESTR/fusin (putative chemokine receptor). By signaling through the receptor, SDF1 may serve as an inhibitor of HIV-1 (human immunodeficiency virus), which utilizes the LESTR/fusin receptor as a point of entry. The SDF-1/CXCR4 signalling pathway is associated with cancer cell proliferation, migration and survival. Overexpression of SDF1 is observed in breast carcinoma, ovarian carcinoma and papillary thyroid carcinoma. It enhances angiogenesis in the ischemic tissue. SDF1 offers CXCR4 mediated neuroprotection during post ischemic stroke.

Forme physique

This product is lyophilized from a 0.2 μm-filtered solution containing 10 μg SDF-1α and 0.5 mg bovine serum albumin in PBS.

Reconstitution

Reconstitute the contents of the vial using sterile buffer or medium containing a minimum of 0.1% BSA or HSA to a stock concentration of ≥10 μg/ml. Additional filtration of the stock solution is not recommended as this may result in loss of product due to adsorption onto the filter membrane.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

Diversity and inter-connections in the CXCR4 chemokine receptor/ligand family: molecular perspectives
Pawig L, et al.
Frontiers in Immunology (2015)
Structure and Chromosomal Localization of the Human Stromal Cell-Derived Factor 1 (SDF1) Gene
Shirozu M, et al.
Genomics, 28, 495-500 (1995)
SDF-1/CXCR4 expression is an independent negative prognostic biomarker in patients with head and neck cancer after primary radiochemotherapy
Colle CD, et al.
Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology, 126, 125-131 (2018)
The α-Chemokine, Stromal Cell-derived Factor-1α, Binds to the
Transmembrane G-protein-coupled CXCR-4 Receptor and
Activates Multiple Signal Transduction Pathways.
Ganju RK, et al.
The Journal of Biological Chemistry, 273, 23169?- 233175 (1998)
Wnt/?-catenin pathway is required for epithelial to mesenchymal transition in CXCL12 over expressed breast cancer cells
International Journal of Clinical and Experimental Pathology, 8(10), 12357?12367-12357?12367 (2015)

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