Recombinant Human R-spondin-1 (RSPO1), partial (Active)

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Code CSB-AP005721HU
Size $204
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Greater than 95% as determined by SDS-PAGE.
Less than 0.01 EU/µg as determined by LAL method.
The ED50 as determined by its ability to induce Topflash reporter activity in HEK293T human embryonic kidney cells is 1-10ng/ml.
Target Names
Uniprot No.
Research Area
Developmental Biology
Alternative Names
CRISTIN3, FLJ40906, hRspo1, R spondin homolog, R spondin homolog (Xenopus laevis), R spondin1, R-spondin-1, Roof plate specific spondin, Roof plate-specific spondin-1, RP11-566C13.1, RSPO, Rspo1, RSPO1_HUMAN
Homo sapiens (Human)
Mammalian cell
Expression Region
Complete Sequence
Mol. Weight
27.8 kDa
Protein Length
Full Length of Mature Protein
Tag Info
C-terminal 6xHis-tagged
Liquid or Lyophilized powder
Lyophilized from a 0.2 μm filtered 1xPBS, pH 7.4
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Datasheet & COA
Please contact us to get it.

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Target Background

Activator of the canonical Wnt signaling pathway by acting as a ligand for LGR4-6 receptors. Upon binding to LGR4-6 (LGR4, LGR5 or LGR6), LGR4-6 associate with phosphorylated LRP6 and frizzled receptors that are activated by extracellular Wnt receptors, triggering the canonical Wnt signaling pathway to increase expression of target genes. Also regulates the canonical Wnt/beta-catenin-dependent pathway and non-canonical Wnt signaling by acting as an inhibitor of ZNRF3, an important regulator of the Wnt signaling pathway. Acts as a ligand for frizzled FZD8 and LRP6. May negatively regulate the TGF-beta pathway. Has a essential roles in ovary determination. Regulates Wnt signaling by antagonizing DKK1/KREM1-mediated internalization of LRP6 through an interaction with KREM1.
Gene References into Functions
  1. first report of a RSPO1 missense mutation in association with human disease (familial 46,XX disorder of sexual development) . PMID: 29262419
  2. Rspo1 increases the number of Lgr5(+) liver stem cells in human liver fibrosis tissues, and once they are isolated, these cells are able to form organoids, and treatment with HGF/Rspo1 promotes their expansion PMID: 29079780
  3. RSPOs facilitate HSC activation and promote liver fibrogenesis by enhancing the Wnt pathway PMID: 27572318
  4. Role of RSPO1 in gastric cancer PMID: 28219935
  5. Results showed that Rspo1 expression is downregulated in adult follicles but its activation is sufficient in promoting ovarian tumors supporting its direct involvement in the initiation of ovarian cancers. PMID: 27270435
  6. We highlight the cooperation of WNT4, RSPO1 and FOXL2 within a regulatory network and the need for further research to better understand their role in defining and maintaining ovarian identity. PMID: 27604691
  7. Rspo1 glycosylation at Asn137 is essential for secretion and stability but not for heparin binding. PMID: 27314333
  8. DPY19L3-mediated C-mannosylation of Rspo1 at tryptophan(156) is required for Rspo1 secretion. PMID: 26764097
  9. Genetic variants in ZC3H11B, RSPO1, and GJD2 are associated with susceptibility to the development of high myopia in a Han Chinese population. PMID: 26485405
  10. R-Spondin1 has an effect on radiosensitivity of glioma cells PMID: 25865226
  11. ZNRF3 and LGR4-binding sites in RSPO1 are required for Wnt signaling. PMID: 24165923
  12. Changes in the expression levels of IRS1, IRS2, RIPK2, RSPO1, and DNA JC15 genes might contribute to the development of insulin resistance and glucose intolerance in the obese boys. PMID: 26040030
  13. the LGR4-Rspo1 complex crystal structure shows divergent mechanisms of ligand recognition by leucine-rich repeat G-protein-coupled receptors PMID: 25480784
  14. ZNRF3 binds RSPO1 and LGR5-RSPO1 with micromolar affinity via RSPO1 furin-like 1 (Fu1) domain. PMID: 24349440
  15. overexpressed in fibrotic liver tissue PMID: 25218283
  16. Loss of RSPO1 expression is associated with invasive ductal carcinoma of the breast. PMID: 24373193
  17. RSPO-LGR4 not only induces the clearance of RNF43/ZNRF3 to increase Wnt receptor levels but also recruits IQGAP1 into the Wnt signaling complex. PMID: 24639526
  18. Crystal structures of the Lgr4 ectodomain alone and bound to Rspo1. PMID: 23891289
  19. In conclusion, present study highlights the role of Rspo 1 in bone remodeling where it activates Wnt signaling to induce differentiation, as shown in human as well murine in vitro osteoblast cell models. PMID: 23617070
  20. Recent developments have demonstrated that ovarian development is an active process (rather than a default process); ovarian development/function requires expression of RSPO1, WNT4, and FOXL2. [REVIEW] PMID: 23044875
  21. R-Spondin potentiates Wnt/beta-catenin signaling through orphan receptors LGR4 and LGR5 PMID: 22815884
  22. study provides new mechanistic insights into the regulation of Wnt receptor turnover, and reveals ZNRF3 as a tractable target for therapeutic exploration PMID: 22575959
  23. R-spondin1 is upregulated during critical stages of early human ovary development and may function as a tissue-specific amplifier of beta-catenin signaling to oppose testis determination. PMID: 21297984
  24. identified a gene, R-spondin1, with potent and specific proliferative effects on intestinal crypt cells PMID: 16109882
  25. Human R-spondin1 (RSPO1) is the gene disrupted in a recessive syndrome characterized by XX sex reversal, palmoplantar hyperkeratosis and predisposition to squamous cell carcinoma of the skin. PMID: 17041600
  26. RSPO1 regulates Wnt signaling by inhibiting internalization of LRP6. PMID: 17804805
  27. Mutational analysis of the RSPO1 gene in a 46,XX woman with true hermaphroditism, palmoplantar keratoderma, congenital bilateral corneal opacities, onychodystrophy, and hearing impairment, is reported. PMID: 18085567
  28. R-sponin1 (Rspo1) acted synergistically with Wnt3A to activate Wnt/beta-catenin signaling in the uncommitted mesenchymal C2C12 cells. PMID: 18242177
  29. SRY represses the transcriptional of the Rspo1/Wnt target genes involved in ovarian determination. PMID: 19376480
  30. Mice treated with R-spondin1 showed increased intestinal epithelial healing, providing a protective effect against chemotherapy-induced intestinal mucositis. PMID: 16306530

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Involvement in disease
Keratoderma, palmoplantar, with squamous cell carcinoma of skin and sex reversal (PKKSCC)
Subcellular Location
Secreted. Nucleus.
Protein Families
R-spondin family
Tissue Specificity
Abundantly expressed in adrenal glands, ovary, testis, thyroid and trachea but not in bone marrow, spinal cord, stomach, leukocytes colon, small intestine, prostate, thymus and spleen.
Database Links

HGNC: 21679

OMIM: 609595

KEGG: hsa:284654

STRING: 9606.ENSP00000348944

UniGene: Hs.135015

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