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

Images

 
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.
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.
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.
The specific activity of recombinant human IGF-I/IGF-1 is approximately 2.5 IU/μg, which is calibrated against recombinant human IGF-I/IGF-1 WHO International Standard (NIBSC code: 91/554).   Specific activity is for reference purposes only and is not routinely tested.  
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 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

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 visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
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
Species: Hu
Applications: Bioactivity

Publications for IGF-I/IGF-1 (291-G1)(153)

We have publications tested in 14 confirmed species: Human, Mouse, Rat, Bovine, Canine, Chicken, Hamster, Human`, Insect, 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, Scaffold Fabrication, Western Blot.


Filter By Application
Bioassay
(117)
Cell Culture
(14)
Differentiation
(2)
ELISA (Standard)
(1)
In Vivo
(13)
Neutralization
(1)
Scaffold Fabrication
(1)
Western Blot
(1)
All Applications
Filter By Species
Human
(108)
Mouse
(15)
Rat
(4)
Bovine
(7)
Canine
(2)
Chicken
(4)
Hamster
(1)
Human`
(1)
Insect
(1)
N/A
(2)
Porcine
(1)
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 153. Show All 153 Publications.
Publications using 291-G1 Applications Species
G Iannello, A Patel, D Sirabella, B Corneo, V Thaker Generation of the iPSC line CUIMCi003-A derived from a patient with severe early onset obesity Stem Cell Research, 2021;54(0):102432. 2021 [PMID: 34214899] (Bioassay, Human) Bioassay Human
KMA Abdel-Raou, R Rezgui, C Stefanini, JCM Teo, N Christofor Transdifferentiation of Human Fibroblasts into Skeletal Muscle Cells: Optimization and Assembly into Engineered Tissue Constructs through Biological Ligands Biology, 2021;10(6):. 2021 [PMID: 34208436] (Cell Culture, Human) Cell Culture Human
X Dong, L Yang, K Liu, X Ji, C Tang, W Li, L Ma, Y Mei, T Peng, B Feng, Z Wu, Q Tang, Y Gao, K Yan, W Zhou, M Xiong Transcriptional networks identify synaptotagmin-like 3 as a regulator of cortical neuronal migration during early neurodevelopment Cell Reports, 2021;34(9):108802. 2021 [PMID: 33657377] (Bioassay, Human) Bioassay Human
E Solomon, K Davis-Ande, B Hovde, S Micheva-Vi, JF Harris, S Twary, R Iyer Global transcriptome profile of the developmental principles of in vitro iPSC-to-motor neuron differentiation BMC molecular and cell biology, 2021;22(1):13. 2021 [PMID: 33602141] (Bioassay, Human) Bioassay Human
, 0;0(0):. 0 [PMID: 33348564] (Cell Culture, Human) Cell Culture Human
L Song, Z Liu, HH Hu, Y Yang, TY Li, ZZ Lin, J Ye, J Chen, X Huang, DT Liu, J Zhou, Y Shi, H Zhao, C Xie, L Chen, E Song, SY Lin, SC Lin Proto-oncogene Src links lipogenesis via lipin-1 to breast cancer malignancy Nat Commun, 2020;11(1):5842. 2020 [PMID: 33203880] (Cell Culture, Human) Cell Culture Human
KC Allan, LR Hu, MA Scavuzzo, AR Morton, AS Gevorgyan, EF Cohn, BLL Clayton, IR Bederman, S Hung, CF Bartels, M Madhavan, PJ Tesar Non-canonical Targets of HIF1a Impair Oligodendrocyte Progenitor Cell Function Cell Stem Cell, 2020;0(0):. 2020 [PMID: 33091368] (Bioassay, Mouse) Bioassay Mouse
NV Hewawasam, F Lhaf, HA Taylor, K Viloria, A Austin, A King, P Jones, L Jones, MD Turner, NJ Hill Modulation of Rab7a-mediated growth factor receptor trafficking inhibits islet beta cell apoptosis and autophagy under conditions of metabolic stress Sci Rep, 2020;10(1):15741. 2020 [PMID: 32978479] (Bioassay, Mouse) Bioassay Mouse
S Riccetti, A Sinigaglia, G Desole, N Nowotny, M Trevisan, L Barzon Modelling West Nile Virus and Usutu Virus Pathogenicity in Human Neural Stem Cells Viruses, 2020;12(8):. 2020 [PMID: 32806715] (Bioassay, Human) Bioassay Human
DP Ha, AS Lee Insulin-like growth factor 1-receptor signaling stimulates GRP78 expression through the PI3K/AKT/mTOR/ATF4 axis Cell. Signal., 2020;75(0):109736. 2020 [PMID: 32805346] (Bioassay, Mouse) Bioassay Mouse
Show All 153 Publications.

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Bioinformatics

Gene Symbol IGF1
Uniprot