SRP3154
sFRP-1 human
recombinant, expressed in HeLa cells, ≥97% (SDS-PAGE), ≥97% (HPLC), suitable for cell culture
Synonym(s):
SARP-2, Secreted Apoptosis Related Protein-2, Soluble Frizzled Related Protein-1
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About This Item
UNSPSC Code:
12352200
NACRES:
NA.77
biological source
human
recombinant
expressed in HeLa cells
Assay
≥97% (HPLC)
≥97% (SDS-PAGE)
form
lyophilized
potency
0.3-0.5 μg/mL ED50
mol wt
31.0-36.0 kDa
packaging
pkg of 20 μg
technique(s)
cell culture | mammalian: suitable
impurities
<0.1 EU/μg endotoxin, tested
color
white
UniProt accession no.
shipped in
wet ice
storage temp.
−20°C
Gene Information
human ... SFRP1(6422)
General description
The gene SFRP1 (secreted frizzled related protein 1) is mapped to human chromosome 8p22–p12, a region frequently deleted in breast cancer. It is highly expressed in normal breast tissue.
Biochem/physiol Actions
Secreted Frizzled-related protein 1 (SFRP1) is a secreted inhibitor of Wnt signaling pathway. DNA damage or oxidative stress causes cellular senescence, which leads to overexpression of sfrp1. This protein induces senescence phenotypes via the inactivation of Wnt signaling and activation of the retinoblastoma (Rb) pathway. Mutations or aberrant methylation in this gene impair the induction of senescence in several cancers, including breast cancer, bladder cancer, and colorectal tumorigenesis.
Sequence
SEYDYVSFQS DIGPYQSGRF YTKPPQCVDI PADLRLCHNV GYKKMVLPNL LEHETMAEVK QQASSWVPLL NKNCHAGTQV FLCSLFAPVC LDRPIYPCRW LCEAVRDSCE PVMQFFGFYW PEMLKCDKFP EGDVCIAMTP PNATEASKPQ GTTVCPPCDN ELKSEAIIEH LCASEFALRM KIKEVKKENG DKKIVPKKKK PLKLGPIKKK DLKKLVLYLK NGADCPCHQL DNLSHHFLIM GRKVKSQYLL TAIHKWDKKN KEFKNFMKKM KNHECPTFQS VFK
Physical form
Lyophilized from 10 mM Sodium Phosphate pH 7.0.
Reconstitution
Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Information
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A M Goodwin et al.
Angiogenesis, 5(1-2), 1-9 (2003-01-29)
The Wnt signaling pathway regulates normal development as well as a variety of pathologies. Studies of the Wnt pathway have focused largely on very early development and on tumorigenesis. Recent observations point to a role for Wnt signaling in vessel
Methylation-associated silencing of SFRP1 with an 8p11-12 amplification inhibits canonical and non-canonical WNT pathways in breast cancers.
Yang ZQ
International Journal of Cancer. Journal International Du Cancer, 125, 1613-1621 (2009)
WNT pathway and mammary carcinogenesis: loss of expression of candidate tumor suppressor gene SFRP1 in most invasive carcinomas except of the medullary type.
Ugolini F
Oncogene, 20, 5810-5817 (2001)
Xiaobin Wang et al.
Oncology letters, 4(2), 334-338 (2012-07-31)
The aims of this study were to determine the methylation and expression status of secreted Frizzled-related protein 1 (SFRP1) in bladder cancer, to explore the mechanisms involved and to study the role of SFRP1 in the pathogenesis of bladder cancer.
Germaine M Caldwell et al.
Cancer research, 64(3), 883-888 (2004-02-12)
Regions of the short arm of chromosome 8 are deleted frequently in a range of solid tumors, indicating that tumor suppressor genes reside at these loci. In this study, we have examined the properties of the Wnt signaling antagonist secreted
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