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Recombinant Human R-Spondin 1 Protein


货号 4645-RS-025
别名 Cristin 3; CRISTIN3; FLJ40906Roof plate-specific spondin-1; hRspo1; roof plate-specific spondin; RSPO; RSPO1; R-spondin homolog (Xenopus laevis); RSPONDIN; R-spondin1; R-spondin-1
全称 Roof Plate-specific Spondin 1
反应种属 Human
形式 Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
供应商 R&D Systems
Entrez Gene IDs 284654 (Human); 192199 (Mouse)
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

Development of Functional Microfold (M) Cells from Intestinal Stem Cells in Primary Human Enteroids.
Authors: Rouch J, Scott A, Lei N, Solorzano-Vargas R, Wang J, Hanson E, Kobayashi M, Lewis M, Stelzner M, Dunn J, Eckmann L, Martin M
PLoS ONE, 2016;11(1):e0148216.
Species: Human
Sample Type: Whole Cells
Application: Bioassay
Therapeutic Targeting of Tumor-Derived R-Spondin Attenuates beta-Catenin Signaling and Tumorigenesis in Multiple Cancer Types.
Authors: Chartier C, Raval J, Axelrod F, Bond C, Cain J, Dee-Hoskins C, Ma S, Fischer M, Shah J, Wei J, Ji M, Lam A, Stroud M, Yen W, Yeung P, Cancilla B, O'Young G, Wang M, Kapoun A, Lewicki J, Hoey T, Gurney A
Cancer Res, 2016;76(3):713-23.
Species: Mouse
Sample Type: In Vivo
Application: Bioassayantibod
Intestinal enteroids model GUCY2C-dependent secretion induced by heat-stable enterotoxins
Infect Immun, 2016;0(0):.
Species: Human
Sample Type: Whole Tissue
Application: Bioassay
Novel Bi-specific Domain Antibody to LRP6 Inhibits Wnt and R-spondin Ligand-induced Wnt Signaling and Tumor Growth
Mol Cancer Res, 2016;0(0):.
Species: Human
Sample Type: Whole Cells
Application: Bioassay
Characterization and propagation of tumor initiating cells derived from colorectal liver metastases: trials, tribulations and a cautionary note.
Authors: James M, Howells L, Karmokar A, Higgins J, Greaves P, Cai H, Dennison A, Metcalfe M, Garcea G, Lloyd D, Berry D, Steward W, Brown K
PLoS ONE, 2015;10(2):e0117776.
Species: Human
Sample Type: Whole Cells
Application: Bioassay
Luminal microbes promote monocyte-stem cell interactions across a healthy colonic epithelium.
Authors: Skoczek D, Walczysko P, Horn N, Parris A, Clare S, Williams M, Sobolewski A
J Immunol, 2014;193(1):439-51.
Species: Human
Sample Type: Whole Tissue
Application: Bioassay
Widespread potential for growth-factor-driven resistance to anticancer kinase inhibitors.
Authors: Wilson TR, Fridlyand J, Yan Y, Penuel E, Burton L, Chan E, Peng J, Lin E, Wang Y, Sosman J, Ribas A, Li J, Moffat J, Sutherlin DP, Koeppen H, Merchant M, Neve R, Settleman J
Nature, 2012;487(7408):505-9.
Species: Human
Sample Type: Whole Cells
Application: Bioassay
Role of Gadd45a in Wip1-dependent regulation of intestinal tumorigenesis.
Cell Death Differ., 2012;19(11):1761-8.
Species: Human
Sample Type: Whole Cells
Application: Bioassay
ZNRF3 promotes Wnt receptor turnover in an R-spondin-sensitive manner.
Authors: Hao HX, Xie Y, Zhang Y, Charlat O, Oster E, Avello M, Lei H, Mickanin C, Liu D, Ruffner H, Mao X, Ma Q, Zamponi R, Bouwmeester T, Finan PM, Kirschner MW, Porter JA, Serluca FC, Cong F
Nature, 2012;485(7397):195-200.
Species: Human
Sample Type: Whole Cells
Application: Bioassay
Directed differentiation of human pluripotent stem cells into intestinal tissue in vitro.
Authors: Spence JR, Mayhew CN, Rankin SA
Nature, 2011;470(7332):105-9.
Species: Human
Sample Type: Whole Cells
Application: Bioassay

内毒素水平 <0.10 EU per 1 μg of the protein by the LAL method.
生物活性 Measured by its ability to induce Topflash reporter activity in HEK293T human embryonic kidney cells. The ED50 for this effect is typically 1-4 ng/mL in the presence of 5 ng/mL Recombinant Mouse Wnt‑3a (Catalog # 1324-WN).
溶解方法 Reconstitute at 100 μg/mL in PBS containing at least 0.1% human or bovine serum albumin.

R-Spondin 1 (RSPO1, Roof plate-specific Spondin 1), also known as cysteine-rich and single thrombospondin domain containing protein 3 (Cristin 3), is a 27 kDa secreted protein that shares ~40% amino acid (aa) identity with three otherR-Spondin family members (1, 2). All R-Spondins regulate Wnt/ beta -catenin signaling, but have distinct expression patterns (1-3). Like other R-Spondins, R-Spondin 1 contains two adjacent cysteine-rich furin-like domains (aa 34-135) with one potential
N-glycosylation site, followed by a thrombospondin (TSP-1) motif (aa 147-207) and a region rich in basic residues (aa 211-263). Only the furin-like domains are needed for beta -catenin stabilization (2, 4). A putative nuclear localization signal at the C-terminus may allow some expression in the nucleus (5). Potential isoforms of 200 and 236 aa have an alternate, shorter N-terminus or are missingaa 146-208, respectively (6). Over aa 21-263, human R-Spondin 1 shares 89%, 87%, 92%, 91%, 91% and 89% aa identity with mouse, rat, equine, canine, caprine and bovine RSPO-1, respectively. R-Spondin 1 is expressed in early development at the roof plate boundary and is thought to contribute to dorsal neural tube development (3, 5). In humans, rare disruptions of the R-Spondin 1 gene are associated with tendencies for XX sex reversal (phenotypic male) or hermaphroditism, indicating a role for R-Spondin 1 in gender-specific differentiation (7, 8). Disruption is also associated with palmoplantar keratosis (7, 8). Postnatally,R-Spondin 1 is expressed by neuroendocrine cells in the intestine, adrenal gland and pancreas, and by epithelia in kidney and prostate (9). Injection of recombinant R-Spondin 1 in mice causes activation of beta -catenin and proliferation of intestinal crypt epithelial cells, and ameliorates experimental colitis (9, 10). R-Spondin 1 regulates Wnt/ beta -catenin by competing with the Wnt antagonist DKK-1 for binding to the Wnt co-receptors, Kremen and LRP-6, reducing their DKK-1-mediated internalization (11). Reports differ on whether R-Spondin 1 binds LRP-6 directly (11-13).

Accession # Q2MKA7
运输条件 Blue Ice
Sequence Analysis
预期分子量 25.6 kDa
SDS-PAGE 39 kDa, reducing conditions
存放说明 M-20C
纯度 >90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
不含载体 What does CF mean?
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

  1. Chen, J-Z. et al. (2002) Mol. Biol. Rep. 29:287.
  2. Kim, K.-A. et al. (2006) Cell Cycle 5:23.
  3. Nam, J.-S. et al. (2007) Gene Expr. Patterns 7:306.
  4. Kazanskaya, O. et al. (2004) Dev. Cell 7:525.
  5. Kamata, T. et al. (2004) Biochim. Biophys. Acta 1676:51.
  6. Entrez accession # EAX07331, ABA54598.
  7. Tomaselli, S. et al. (2008) Hum. Mutat. 29:220.
  8. Parma, P. et al. (2006) Nat. Genet. 38:1304.
  9. Kim, K.-A. et al. (2005) Science 309:1256.
  10. Zhao, J. et al. (2007) Gastroenterology 132:1331.
  11. Binnerts, M.E. et al. (2007) Proc. Natl. Acad. Sci. USA 104:14700.
  12. Nam, J.-S. et al. (2006) J. Biol. Chem. 281:13247.
  13. Wei, Q. et al. (2007) J. Biol. Chem. 282:15903.
1 µg/lane of Recombinant Human
R-Spondin 1 was resolved with SDS-PAGE and visualized by silver staining under reducing (R) conditions, showing a single band at 39 kDa.
Recombinant Human R-Spondin 1 (Catalog # 4645-RS), in the presence of Recombinant Mouse Wnt‑3a (Catalog # 1324-WN; 5 ng/mL), induces activation of beta-catenin in HEK293T cells measured using the Topflash assay (blue). The activity is approximately 7-fold greater than the competitor's R-Spondin 1 (red).
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规格: 25ug


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2)检出率是在MSD标准曲线范围内的数据,样本内因子含量超出标准品检测范围的情况下:若低于MSD标准曲线范围,则无法检出;若超过标准品检测上限,需实进一步稀释样本优化实验。MSD技术是目前市场上检测范围最宽(横跨4-5log)的多因子检测技术,但蛋白质组几万种蛋白浓度横跨10 log,不能一概而论。





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