Recombinant Human R-Spondin 1 Protein

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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 ...read more
The lot-to-lot consistency of Recombinant Human R-Spondin 1 (Catalog # 4645-RS) was assessed by testing the ability of three independent lots of the protein to stimulate activation of beta-Catenin using a TOPflash ...read more
1 µg/lane of Recombinant HumanR-Spondin 1 was resolved with SDS-PAGE and visualized by silver staining under reducing (R) conditions, showing a single band at 39 kDa.
iPSC-derived human intestinal organoids were cultured using Cultrex™ UltiMatrix RGF Basement Membrane Extract (BME001-05) and intestinal organoid culture medium, which includes Recombinant Human R-Spondin 1 ...read more
Adult stem cells isolated from human descending colon were embedded in Cultrex UltiMatrix RGF Basement Membrane Extract (BME001-05) and cultured for 30 days in intestinal organoid culture medium, which includes ...read more

Product Details

Summary
Reactivity HuSpecies Glossary
Applications Bioactivity

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Recombinant Human R-Spondin 1 Protein Summary

Details of Functionality
Measured by its ability to induce Topflash reporter activity in HEK293T human embryonic kidney cells. The ED50 for this effect is 1.00-10.0 ng/mL in the presence of 5 ng/mL Recombinant Mouse Wnt‑3a (Catalog # 1324-WN).
Source
Chinese Hamster Ovary cell line, CHO-derived human R-Spondin 1 protein
Ser21-Ala263
Accession #
N-terminal Sequence
Ser21 & Arg31
Protein/Peptide Type
Recombinant Proteins
Gene
RSPO1
Purity
>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
25.6 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
39 kDa, reducing conditions
Publications
Read Publications using
4645-RS in the following applications:

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Purity
>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Reconstitution Instructions
Reconstitute at 100 μg/mL in PBS containing at least 0.1% human or bovine serum albumin.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human R-Spondin 1 Protein

  • Cristin 3
  • CRISTIN3
  • FLJ40906Roof plate-specific spondin-1
  • HRspo1
  • roof plate-specific spondin
  • RSPO
  • RSPO1
  • RSpondin 1
  • R-Spondin 1
  • R-spondin homolog (Xenopus laevis)
  • RSPONDIN
  • R-spondin1
  • R-spondin-1

Background

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 other R-Spondin family members (1, 2). All R-Spondins regulate Wnt/ beta-Catenin signaling but have distinct expression patterns (1-3). R-Spondin 1 competes with the Wnt antagonist DKK-1 for binding to the Wnt co-receptors, Kremen and LRP-6, reducing their DKK-1-mediated internalization (4). However, reports are mixed on whether R-Spondin 1 binds LRP-6 directly (4-6). R-Spondin 1 is expressed in early development at the roof plate boundary and is thought to contribute to dorsal neural tube development (3, 7). 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). Mutations in R-Spondin 1 are also linked with palmoplantar keratoderma, abnormal thickening of the skin on the palms of the hands and soles of the feet (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). Interest in R-Spondin 1 as a cell culture supplement has grown with the expansion of the organoid field. R-Spondin 1 is widely used in organoid cell culture workflows as a vital component that promotes both growth and survival of 3D organoids (11).

Structurally similar to 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, 12). A putative nuclear localization signal at the C-terminus may allow some expression in the nucleus (13). Potential isoforms of 200 and 236 aa have an alternate, shorter N-terminus or are missing aa 146-208, respectively (14). Over aa 21-263, human R-Spondin 1 shares 89%, 87%, 92%, 91%, 91% and 89% aa identity with mouse, rat, horse, dog, goat, and cow RSPO-1, respectively.

  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. Binnerts, M.E. et al. (2007) Proc. Natl. Acad. Sci. USA 104:14700.
  5. Nam, J.-S. et al. (2006) J. Biol. Chem. 281:13247.
  6. Wei, Q. et al. (2007) J. Biol. Chem. 282:15903.
  7. Kamata, T. et al. (2004) Biochim. Biophys. Acta 1676:51.
  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. Drost and Clevers. (2018) Nature Reviews Cancer 18:407.
  12. Kazanskaya, O. et al. (2004) Dev. Cell 7:525.
  13. Tomaselli, S. et al. (2008) Hum. Mutat. 29:220.
  14. UniProt # Q2MKA7.

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Publications for R-Spondin 1 (4645-RS)(112)

We have publications tested in 7 confirmed species: Human, Mouse, Rat, Avian - Chicken, Chicken, Feline, Transgenic Mouse.

We have publications tested in 4 applications: Bioassay, Cell Culture, IHC Control, Tissue Culture.


Filter By Application
Bioassay
(100)
Cell Culture
(11)
IHC Control
(1)
Tissue Culture
(1)
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Human
(77)
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(32)
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(1)
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Showing Publications 1 - 10 of 112. Show All 112 Publications.
Publications using 4645-RS Applications Species
Goswami, Y;Baghel, A;Sharma, G;Sharma, PK;Biswas, S;Yadav, R;Garg, PK;Shalimar, ;Tandon, R; Liver Organoids From Hepatocytes of Healthy Humans and Non-alcoholic Fatty Liver Disease (NAFLD) Patients Display Multilineage Architecture and can be Used to Develop an In Vitro Model of Steatohepatitis Journal of clinical and experimental hepatology 2024-12-03 [PMID: 39872219] (Bioassay, Human) Bioassay Human
Lea, G;Doria-Borrell, P;Ferrero-Micó, A;Varma, A;Simon, C;Anderson, H;Biggins, L;De Clercq, K;Andrews, S;Niakan, KK;Gahurova, L;McGovern, N;Pérez-García, V;Hanna, CW; Ectopic expression of DNMT3L in human trophoblast stem cells restores features of the placental methylome Cell stem cell 2024-12-31 [PMID: 39788122] (Bioassay, Human) Bioassay Human
Larrañaga, E;Marín-Riera, M;Abad?Lázaro, A;Bartolomé-Català, D;Otero-Tarrazón, A;Fernández?Majada, V;Batlle, E;Sharpe, J;Ojosnegros, S;Comelles, J;Martínez, E; Long-range organization of intestinal 2D-crypts using exogenous Wnt3a micropatterning Nature communications 2025-01-03 [PMID: 39753580] (Bioassay, Transgenic Mouse) Bioassay Transgenic Mouse
Popova, LV;Garfinkle, EAR;Chopyk, DM;Navarro, JB;Rivaldi, A;Shu, Y;Lomonosova, E;Phay, JE;Miller, BS;Sattuwar, S;Mullen, M;Mardis, ER;Miller, KE;Dedhia, PH; Single Nuclei Sequencing Reveals Intratumoral Cellular Heterogeneity and Replication Stress in Adrenocortical Carcinoma bioRxiv : the preprint server for biology 2024-10-28 [PMID: 39554059] (Bioassay, Human) Bioassay Human
Fink, M;Njah, K;Patel, SJ;Cook, DP;Man, V;Ruso, F;Rajan, A;Narimatsu, M;Obersterescu, A;Pye, MJ;Trcka, D;Chan, K;Ayyaz, A;Wrana, JL; Chromatin remodelling in damaged intestinal crypts orchestrates redundant TGF? and Hippo signalling to drive regeneration Nature cell biology 2024-11-15 [PMID: 39548329] (Bioassay, Mouse) Bioassay Mouse
Cao, R;Guo, Y;Liu, J;Guo, Y;Li, X;Xie, F;Wang, Y;Qin, J; Assessment of nanotoxicity in a human placenta-on-a-chip from trophoblast stem cells Ecotoxicology and environmental safety 2024-09-16 [PMID: 39288735] (Bioassay, Human) Bioassay Human
Wang, X;Yang, S;Zheng, C;Huang, C;Yao, H;Guo, Z;Wu, Y;Wang, Z;Wu, Z;Ge, R;Cheng, W;Yan, Y;Jiang, S;Sun, J;Li, X;Xie, Q;Wang, H; Multi-Omics Profiles of Small Intestine Organoids in Reaction to Breast Milk and Different Infant Formula Preparations Nutrients 2024-09-02 [PMID: 39275267] (Bioassay, Human) Bioassay Human
Cioce, M;Gatti, V;Napolitano, F;Giorgiano, NM;Marra, A;Portella, G;Fiorelli, A;Pentimalli, F;Fazio, VM; Mesothelioma-Associated Fibroblasts Modulate the Response of Mesothelioma Patient-Derived Organoids to Chemotherapy via Interleukin-6 International journal of molecular sciences 2024-05-14 [PMID: 38791392] (Bioassay, Human) Bioassay Human
Jang, KK;Ercelen, D;Cen Feng, JYC;Gurunathan, S;Zhou, C;Korman, A;Newell, L;Hudesman, D;Jones, DR;Loke, P;Axelrad, JE;Cadwell, K; Tofacitinib uptake by patient-derived intestinal organoids predicts individual clinical responsiveness bioRxiv : the preprint server for biology 2024-03-06 [PMID: 38712048] (Bioassay, Human) Bioassay Human
Arshad, M;Azad, A;Chan, PYK;Vigneswara, V;Feldinger, K;Nafi, SNM;Laporte-Maguire, E;De Santo, C;Zuo, J;Shaaban, AM;Kong, A; Neratinib could be effective as monotherapy or in combination with trastuzumab in HER2-low breast cancer cells and organoid models British journal of cancer 2024-04-10 [PMID: 38600326] (Bioassay, Human) Bioassay Human
Show All 112 Publications.

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Bioinformatics

Gene Symbol RSPO1
Uniprot