Recombinant Human IGF-I/IGF-1 Protein, CF

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Recombinant Human IGF-I/IGF-1 (Catalog # 291-G1) stimulates proliferation in the MCF-7 human breast cancer cell line. The ED50 for this effect is 0.3‑1.5 ng/mL.
1 μg/lane of Recombinant Human IGF-I/IGF-1 was resolved with SDS-PAGE under reducing (R) conditions and visualized by silver staining, showing a single band at 7 kDa.
MALDI-TOF analysis of Recombinant Human IGF-I/IGF-1.The major peak corresponds to the calculated molecular mass, 7650 Da. The minor peak at 7873 is a matrix-associated artifact of the MALDI-TOF.

Product Details

Summary
Reactivity HuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

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Catalog# & Formulation Size Price

Recombinant Human IGF-I/IGF-1 Protein, CF Summary

Details of Functionality
Measured in a serum-free cell proliferation assay using MCF‑7 human breast cancer cells. Karey, K.P. et al. (1988) Cancer Research 48:4083. The ED50 for this effect is 0.3-1.5 ng/mL.
Source
E. coli-derived human IGF-I/IGF-1 protein
Gly49-Ala118
Accession #
N-terminal Sequence
Gly49
Protein/Peptide Type
Recombinant Proteins
Gene
IGF1
Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
7.6 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
7 kDa, reducing conditions
Publications
Read Publications using
291-G1 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.
Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Reconstitution Instructions
Reconstitute at 200 μg/mL in sterile PBS.

Notes

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

Alternate Names for Recombinant Human IGF-I/IGF-1 Protein, CF

  • IBP1
  • IGF1
  • IGF-1
  • IGF1A
  • IGFI
  • IGF-I
  • IGF-IA
  • IGF-IB
  • insulin-like growth factor 1 (somatomedin C)
  • insulin-like growth factor 1
  • insulin-like growth factor I
  • insulin-like growth factor IA
  • insulin-like growth factor IB
  • Mechano growth factor
  • MGF
  • Somatomedin A
  • Somatomedin C
  • somatomedin-C

Background

Insulin-like growth factor I (IGF-I or IGF-1), also known as somatomedin C, is the dominant effector of growth hormone and is structurally homologous to proinsulin. Human IGF-1 is synthesized as two precursor isoforms with N- and alternate C‑terminal propeptides (1). These isoforms are differentially expressed by various tissues (1). The 7.6 kDa mature IGF-1 protein is identical between isoforms and is generated by proteolytic removal of the N- and C‑terminal regions. Mature human IGF-1 shares 94% and 96% aa sequence identity with mouse and rat IGF-1, respectively (2), and exhibits cross-species activity. It shares 64% aa sequence identity with mature human IGF-II/IGF-2. Circulating IGF-I is produced by hepatocytes, while local IGF-I is produced by many other tissues in which it has paracrine effects (1). IGF-I induces the proliferation, migration, and differentiation of a wide variety of cell types during development and postnatally (3). IGF-I regulates glucose and fatty acid metabolism, steroid hormone activity, and cartilage and bone metabolism (4‑7). It plays an important role in muscle regeneration and tumor progression (1, 8). IGF-I/IGF-1 binds IGF-I R, IGF-II R, and the insulin receptor, although its effects are mediated primarily by IGF-I R (9). The IGF-I protein associates with IGF binding proteins thereby increasing its plasma half‑life and modulating its interactions with receptors (10).

  1. Philippou, A. et al. (2007) In Vivo 21:45.
  2. Sandberg-Nordqvist, A.C. et al. (1992) Brain Res. Mol. Brain Res. 12:275.
  3. Guvakova, M.A. (2007) Int. J. Biochem. Cell Biol. 39:890.
  4. Clemmons, D.R. (2006) Curr. Opin. Pharmacol. 6:620.
  5. Bluher, S. et al. (2005) Best Pract. Res. Clin. Endocrinol. Metab. 19:577.
  6. Garcia-Segura, L.M. et al. (2006) Neuroendocrinology 84:275.
  7. Malemud, C.J. (2007) Clin. Chim. Acta 375:10.
  8. Samani, A.A. et al. (2007) Endocrine Rev. 28:20.
  9. LeRoith, D. and S. Yakar (2007) Nat. Clin. Pract. Endocrinol. Metab. 3:302.
  10. Denley, A. et al. (2005) Cytokine Growth Factor Rev. 16:421.

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291-G1
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Publications for IGF-I/IGF-1 (291-G1)(209)

We have publications tested in 16 confirmed species: Human, Mouse, Rat, Bovine, Canine, Chicken, Eastern Bluebirds, Feline, Hamster, Insect, L. braziliensis, N/A, Porcine, Primate - Macaca fascicularis (Crab-eating Monkey or Cynomolgus Macaque), Primate - Macaca nemestrina (Southern Pig-tailed Macaque), Rabbit.

We have publications tested in 8 applications: Bioassay, Cell Culture, Differentiation, ELISA (Standard), In Vivo, Neutralization, Surface Plasmon Resonance, Western Blot.


Filter By Application
Bioassay
(173)
Cell Culture
(16)
Differentiation
(4)
ELISA (Standard)
(1)
In Vivo
(13)
Neutralization
(1)
Surface Plasmon Resonance
(1)
Western Blot
(1)
All Applications
Filter By Species
Human
(156)
Mouse
(23)
Rat
(4)
Bovine
(8)
Canine
(2)
Chicken
(4)
Eastern Bluebirds
(1)
Feline
(1)
Hamster
(1)
Insect
(1)
L. braziliensis
(1)
N/A
(2)
Porcine
(2)
Primate - Macaca fascicularis (Crab-eating Monkey or Cynomolgus Macaque)
(2)
Primate - Macaca nemestrina (Southern Pig-tailed Macaque)
(1)
Rabbit
(2)
All Species
Showing Publications 1 - 10 of 209. Show All 209 Publications.
Publications using 291-G1 Applications Species
Maylem, ERS;Spicer, LJ;Batalha, IM;Sch�tz, LF; Developmental and hormonal regulation of FBN1 and OR4M1 mRNA in bovine granulosa cells Domestic animal endocrinology 2023-04-25 [PMID: 37167929] (Bioassay, Bovine) Bioassay Bovine
CA Hayes, NI Morgan, KC Thomas, MJ Pushie, A Vijayasank, BG Ashmore, K Wontor, MA De Leon, NM Ashpole Neuronal and Astrocyte Insulin-like Growth Factor-1 Signaling Differentially Modulates Ischemic Stroke Damage bioRxiv : the preprint server for biology, 2023-04-02;0(0):. 2023-04-02 [PMID: 37034764] (Bioassay, Mouse) Bioassay Mouse
AA Almad, L Garcia, A Takanohash, A Gagne, W Yang, J Ann McGuir, D French, A Vanderver Generation of three induced Pluripotent Stem Cell lines from individuals with Hypomyelination with Atrophy of Basal Ganglia and Cerebellum caused by a c.745G&gt;A (p.D249N) autosomal dominant mutation in TUBB4A Stem Cell Research, 2023-03-26;69(0):103083. 2023-03-26 [PMID: 37003180] (Bioassay, Human) Bioassay Human
NB Campbell, Y Patel, TL Moore, M Medalla, E Zeldich Extracellular Vesicle Treatment Alleviates Neurodevelopmental and Neurodegenerative Pathology in Cortical Spheroid Model of Down Syndrome International Journal of Molecular Sciences, 2023-02-09;24(4):. 2023-02-09 [PMID: 36834891] (Bioassay, Human) Bioassay Human
EF Cohn, BLL Clayton, M Madhavan, S Yacoub, Y Federov, K Paul-Fried, TJ Shafer, PJ Tesar Pervasive environmental chemicals impair oligodendrocyte development bioRxiv : the preprint server for biology, 2023-02-12;0(0):. 2023-02-12 [PMID: 36798415] (Bioassay, Human, Mouse) Bioassay Human, Mouse
HW Ong, Y Liang, W Richardson, ER Lowry, CI Wells, X Chen, M Silvestre, K Dempster, JA Silvaroli, JL Smith, H Wichterle, NS Pabla, SK Ultanir, AN Bullock, DH Drewry, AD Axtman A Potent and Selective CDKL5/GSK3 Chemical Probe is Neuroprotective bioRxiv : the preprint server for biology, 2023-02-10;0(0):. 2023-02-10 [PMID: 36798313] (Bioassay, Human) Bioassay Human
PY Su, W Lee, J Zernant, SH Tsang, T Nagasaki, B Corneo, R Allikmets Establishment of the iPSC line CUIMCi005-A from a patient with Stargardt disease for retinal organoid culture Oncogene, 2022-11-14;65(0):102973. 2022-11-14 [PMID: 36455383] (Bioassay, Human) Bioassay Human
C Bueno, M Blanquer, D García-Ber, S Martínez, JM Moraleda Binucleated human bone marrow-derived mesenchymal cells can be formed during neural-like differentiation with independence of any cell fusion events Scientific Reports, 2022-11-30;12(1):20615. 2022-11-30 [PMID: 36450873] (Bioassay, Human) Bioassay Human
ESY Ng, N Kady, J Hu, A Dave, Z Jiang, J Pei, MB Gorin, A Matynia, RA Radu Membrane Attack Complex Mediates Retinal Pigment Epithelium Cell Death in Stargardt Macular Degeneration Cells, 2022-11-02;11(21):. 2022-11-02 [PMID: 36359858] (Bioassay, Human) Bioassay Human
M Ridenour, LJ Spicer, JL Grindstaff Insulin-like growth factor 1 and the hormonal mediation of sibling rivalry General and comparative endocrinology, 2022-11-07;330(0):114163. 2022-11-07 [PMID: 36356644] (Bioassay, Eastern Bluebirds) Bioassay Eastern Bluebirds
Show All 209 Publications.

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Bioinformatics

Gene Symbol IGF1
Uniprot