Recombinant Mouse IGFBP-3 Protein, CF

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R&D Systems Recombinant Proteins and Enzymes
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Product Details
Citations (8)

Recombinant Mouse IGFBP-3 Protein, CF Summary

Product Specifications

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.01 EU per 1 μg of the protein by the LAL method.
Measured by its ability to inhibit the biological activity of IGF-I or IGF-II on MCF‑7 human breast cancer cells. Karey, K.P. et al. (1988) Cancer Research 48:4083. The ED50 for this effect is 0.125‑0.5 µg/mL in the presence of 30 ng/mL Recombinant Mouse IGF-II (Catalog # 792-MG).
Mouse myeloma cell line, NS0-derived mouse IGFBP-3 protein
Pro22-Gln291 with substitutions Arg250Gln, Gln259Arg, Ser260Gly, Arg271Pro
Accession #
N-terminal Sequence
Predicted Molecular Mass
29.4 kDa
40-50 kDa, reducing conditions

Product Datasheets

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Carrier Free

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.


Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & 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.
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Background: IGFBP-3

Insulin-like growth factor binding protein-3 (IGFBP-3) is one of six members of the insulin-like growth factor (IGF) binding protein superfamily which function to modulate the biological activity of IGF (1). IGFBP-3 is the major binding protein of IGF where it exists in circulation as a ternary complex with the acid-labile subunit (ALS) (2). Like other IGFBP members, IGFBP-3 includes a cysteine-rich c-terminal domain, a highly variable central linker domain, and another N-terminal cysteine-rich domain (2, 3). Mouse IGFBP-3 cDNA encodes a 291 amino acid (aa) precursor protein with a 27 aa signal peptide that is processed to generate the 264 aa mature protein. Mature mouse IGFBP-3 shares 82% and 95% aa sequence identity with human and rat IGFBP-3, respectively. Post-translational glycosylation and phosphorylation of IGFBP-3 modifies the affinities of the binding protein. Proteolysis of IGFBP-3 by tissue plasminogen activator (tPA), a disintegrin and metaloproteases (ADAMs), and prostate specific antigen (PSA) contributes to IGFBP-3 degradation or a reduction in its affinity for IGF (4-6). The majority of soluble IGFBP-3 found in circulation is secreted from hepatic non-parenchymal cells. IGFBP-3 expression can be modulated by p53 as well as by various cytokines and growth factors (7, 8). In addition to its role in stabilizing and transporting circulating IGF, IGFBP-3 has been shown to potentiate EGF-EGFR-mediated cell growth through the activation of sphingosine kinase1 (SPHK1) and sphingosin-1-phosphate (S1P) (9, 10). IGFBP-3 has also been shown to modulate adipogenesis (11). Binding of IGFBP-3 to non-IGF-related ligands has been shown to regulate TGF-beta signaling, DNA damage, apoptosis, autophagy, and gene transcription (12). Interactions with non-IGF-related ligands is thought to contribute, in part, to the dichotomous stimulatory and inhibitory effects of IGFBP-3 on cell growth (2).

  1. Shimasaki, S. and N. Ling (1991) Prog. Growth Factor Res. 3:243.
  2. Baxter, R.C. (2013) J. Cell Commun. Signal 7:179.
  3. Baxter, R.C. (2014) Nat. Rev. Cancer 14:329.
  4. Mochizuki, S. et al. (2004) Biochem. Biophys. Res. Commun. 315:79.
  5. Cohen, P. et al. (1994) J. Endocrinol. 142:407.
  6. Bang, P. (1995) Prog. Growth Factor Res. 6:285.
  7. Perks, C.M. and J.M. Holly (2008) J. Mammary Gland Biol. Neoplasia 13:455.
  8. Chan, K. and E.M. Spencer (1997) Endocrine 7:95.
  9. Guix, M. et al. (2008) J. Clin. Invest. 118:2609.
  10. Martin, J.L. et al. (2009) J. Biol. Chem. 284:25542.
  11. Chan, S.S. et al. (2009) Am. J. Physiol. Endocrinol. Metab. 296:E654.
  12. Martin, J.L. and R.C. Baxter (2011) Growth Factors 29:235.
Long Name
Insulin-like Growth Factor Binding Protein 3
Entrez Gene IDs
3486 (Human); 16009 (Mouse)
Alternate Names
acid stable subunit of the 140 K IGF complex; binding protein 29; binding protein 53; growth hormone-dependent binding protein; IBP-3; IBP3BP-53; IGF-binding protein 3; IGFBP3; IGFBP-3; insulin-like growth factor binding protein 3; insulin-like growth factor-binding protein 3

Citations for Recombinant Mouse IGFBP-3 Protein, CF

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.

8 Citations: Showing 1 - 8
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  1. Insulin-like Growth Factor Binding Protein 3 Increases Mouse Preimplantation Embryo Cleavage Rate by Activation of IGF1R and EGFR Independent of IGF1 Signalling
    Authors: CJ Green, M Span, MH Rayhanna, M Perera, ML Day
    Cells, 2022-11-24;11(23):.
    Species: Mouse
    Sample Types: Embryo
    Applications: Cell Culture
  2. Stromal androgen signaling acts as tumor niches to drive prostatic basal epithelial progenitor-initiated oncogenesis
    Authors: A Hiroto, WK Kim, A Pineda, Y He, DH Lee, V Le, AW Olson, J Aldahl, CH Nenninger, AJ Buckley, GQ Xiao, J Geradts, Z Sun
    Nature Communications, 2022-11-02;13(1):6552.
    Species: Mouse
    Sample Types: Organoids
    Applications: Bioassay
  3. Runx2+ Niche Cells Maintain Incisor Mesenchymal Tissue Homeostasis through IGF Signaling
    Authors: S Chen, J Jing, Y Yuan, J Feng, X Han, Q Wen, TV Ho, C Lee, Y Chai
    Cell Rep, 2020-08-11;32(6):108007.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Bioassay, Cell Culture
  4. EZH1 and EZH2 promote skeletal growth by repressing inhibitors of chondrocyte proliferation and hypertrophy
    Nat Commun, 2016-11-29;7(0):13685.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Bioassay
  5. IGFBP-3 is a metastasis suppression gene in prostate cancer.
    Authors: Mehta HH, Gao Q, Galet C
    Cancer Res., 2011-06-22;71(15):5154-63.
    Applications: ELISA (Standard)
  6. Evidence of a role for insulin-like growth factor binding protein (IGFBP)-3 in metabolic regulation.
    Authors: Yamada PM, Mehta HH, Hwang D
    Endocrinology, 2010-10-06;151(12):5741-50.
    Applications: ELISA (Standard)
  7. Dietary feeding of silibinin inhibits prostate tumor growth and progression in transgenic adenocarcinoma of the mouse prostate model.
    Authors: Raina K, Blouin MJ, Singh RP, Majeed N, Deep G, Varghese L, Glode LM, Greenberg NM, Hwang D, Cohen P, Pollak MN, Agarwal R
    Cancer Res., 2007-11-15;67(22):11083-91.
    Applications: ELISA (Standard)
  8. The ternary IGF complex influences postnatal bone acquisition and the skeletal response to intermittent parathyroid hormone.
    Authors: Yakar S, Bouxsein ML, Canalis E, Sun H, Glatt V, Gundberg C, Cohen P, Hwang D, Boisclair Y, LeRoith D, Rosen CJ
    J. Endocrinol., 2006-05-01;189(2):289-99.
    Applications: ELISA (Standard)


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