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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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).
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

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, also known as somatomedin C, is the dominant effector of growth hormone and is structurally homologous to proinsulin. Human IGF-I/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-I/IGF-1 is identical between isoforms and is generated by proteolytic removal of the N- and C‑terminal regions. Mature human IGF-I/IGF-1 shares 94% and 96% aa sequence identity with mouse and rat IGF-I/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/IGF-1 is produced by hepatocytes, while local IGF-I/IGF-1 is produced by many other tissues in which it has paracrine effects (1). IGF-I/IGF-1 induces the proliferation, migration, and differentiation of a wide variety of cell types during development and postnatally (3). IGF-I/IGF-1 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). IGF-I/IGF-1 association with IGF binding proteins increases its plasma half‑life and modulates 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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Publications for IGF-I/IGF-1 (291-G1)(130)

We have publications tested in 11 confirmed species: Human, Mouse, Rat, Bovine, Canine, Chicken, Insect, N/A, 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
(103)
Cell Culture
(5)
Differentiation
(2)
ELISA (Standard)
(1)
In Vivo
(13)
Neutralization
(1)
Scaffold Fabrication
(1)
Western Blot
(1)
All Applications
Filter By Species
Human
(93)
Mouse
(10)
Rat
(4)
Bovine
(7)
Canine
(2)
Chicken
(4)
Insect
(1)
N/A
(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 130. Show All 130 Publications.
Publications using 291-G1 Applications Species
YB Pang, J He, BY Cui, S Xu, XL Li, MY Wu, R Liang, Y Feng, X Guo, XH Zhang, XL Luo A Potential Antitumor Effect of Dendritic Cells Fused with Cancer Stem Cells in Hepatocellular Carcinoma Stem Cells Int, 2019;2019(0):5680327. 2019 [PMID: 31065274] (Bioassay, Human) Bioassay Human
S Mayers, PD Moço, T Maqbool, PN Silva, DM Kilkenny, J Audet Establishment of an erythroid progenitor cell line capable of enucleation achieved with an inducible c-Myc vector BMC Biotechnol., 2019;19(1):21. 2019 [PMID: 30987611] (Bioassay, Mouse) Bioassay Mouse
B Mair, J Tomic, SN Masud, P Tonge, A Weiss, M Usaj, AHY Tong, JJ Kwan, KR Brown, E Titus, M Atkins, KSK Chan, L Munsie, A Habsid, H Han, M Kennedy, B Cohen, G Keller, J Moffat Essential Gene Profiles for Human Pluripotent Stem Cells Identify Uncharacterized Genes and Substrate Dependencies Cell Rep, 2019;27(2):599-615.e12. 2019 [PMID: 30970261] (Differentiation, Human) Differentiation Human
D Zhang, A Wang, J Feng, Q Zhang, L Liu, H Ren Ginsenoside Rg5 induces apoptosis in human esophageal cancer cells through the phosphoinositide?3 kinase/protein kinase B signaling pathway Mol Med Rep, 2019;19(5):4019-4026. 2019 [PMID: 30942438] (Bioassay, Human) Bioassay Human
CA Conover, LK Bale, RL Frye, HV Schaff Cellular characterization of human epicardial adipose tissue: highly expressed PAPP-A regulates insulin-like growth factor I signaling in human cardiomyocytes Physiol Rep, 2019;7(4):e14006. 2019 [PMID: 30809969] (Bioassay, Human) Bioassay Human
S Ashraf, S Bell, C O'Leary, P Canning, I Micu, JA Fernandez, M O'Hare, P Barabas, H McCauley, DP Brazil, AW Stitt, JG McGeown, TM Curtis CAMKII as a therapeutic target for growth factor-induced retinal and choroidal neovascularisation JCI Insight, 2019;0(0):. 2019 [PMID: 30721154] (Bioassay, Human) Bioassay Human
KA Rankin, F Mei, K Kim, YA Shen, SR Mayoral, C Desponts, DS Lorrain, AJ Green, SE Baranzini, JR Chan, R Bove Selective estrogen receptor modulators enhance CNS remyelination independent of estrogen receptors J. Neurosci., 2019;0(0):. 2019 [PMID: 30696729] (Bioassay, Human) Bioassay Human
G Wang, J Long, Y Gao, W Zhang, F Han, C Xu, L Sun, SC Yang, J Lan, Z Hou, Z Cai, G Jin, CC Hsu, YH Wang, J Hu, TY Chen, H Li, MG Lee, HK Lin SETDB1-mediated methylation of Akt promotes its K63-linked ubiquitination and activation leading to tumorigenesis Nat. Cell Biol., 2019;0(0):. 2019 [PMID: 30692626] (Bioassay, Human) Bioassay Human
LP Foltz, SE Howden, JA Thomson, DO Clegg Functional Assessment of Patient-Derived Retinal Pigment Epithelial Cells Edited by CRISPR/Cas9 Int J Mol Sci, 2018;19(12):. 2018 [PMID: 30572641] (Bioassay, Human) Bioassay Human
J Li, J Zheng Theaflavins prevent cartilage degeneration via AKT/FOXO3 signaling in�vitro Mol Med Rep, 2019;19(2):821-830. 2019 [PMID: 30569095] (Bioassay, Human) Bioassay Human
Show All 130 Publications.

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Bioinformatics

Gene Symbol IGF1
Uniprot