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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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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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Publications for IGF-I/IGF-1 (291-G1)(218)

We have publications tested in 17 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, Transgenic Mouse.

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
(182)
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
(162)
Mouse
(24)
Rat
(4)
Bovine
(9)
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)
Transgenic Mouse
(1)
All Species
Showing Publications 1 - 10 of 218. Show All 218 Publications.
Publications using 291-G1 Applications Species
Lorenzo-Martín, LF;Hübscher, T;Bowler, AD;Broguiere, N;Langer, J;Tillard, L;Nikolaev, M;Radtke, F;Lutolf, MP; Spatiotemporally resolved colorectal oncogenesis in mini-colons ex vivo Nature 2024-04-24 [PMID: 38658753] (Bioassay, Transgenic Mouse) Bioassay Transgenic Mouse
Davis-Anderson, K;Micheva-Viteva, S;Solomon, E;Hovde, B;Cirigliano, E;Harris, J;Twary, S;Iyer, R; CRISPR/Cas9 Directed Reprogramming of iPSC for Accelerated Motor Neuron Differentiation Leads to Dysregulation of Neuronal Fate Patterning and Function International journal of molecular sciences 2023-11-10 [PMID: 38003351] (Bioassay, Human) Bioassay Human
Chang, S;Xiao, W;Xie, Y;Xu, Z;Li, B;Wang, G;Hu, K;Zhang, Y;Zhou, J;Song, D;Zhu, H;Wu, X;Lu, Y;Shi, J;Zhu, W; TI17, a novel compound, exerts anti-MM activity by impairing Trip13 function of DSBs repair and enhancing DNA damage Cancer medicine 2023-11-09 [PMID: 37942576] (Bioassay, Human) Bioassay Human
Byeon, HJ;Chae, MK;Ko, J;Lee, EJ;Kikkawa, DO;Jang, SY;Yoon, JS; The Role of Adipsin, Complement Factor D, in the Pathogenesis of Graves' Orbitopathy Investigative ophthalmology & visual science 2023-08-01 [PMID: 37555734] (Bioassay, Human) Bioassay Human
Oiwa, K;Watanabe, S;Onodera, K;Iguchi, Y;Kinoshita, Y;Komine, O;Sobue, A;Okada, Y;Katsuno, M;Yamanaka, K; Monomerization of TDP-43 is a key determinant for inducing TDP-43 pathology in amyotrophic lateral sclerosis Science advances 2023-08-04 [PMID: 37540751] (Bioassay, Human) Bioassay Human
Archilia, EC;Bello, CAP;Batalha, IM;Wulstein, K;Enriquez, C;Schütz, LF; Effects of follicle-stimulating hormone, insulin-like growth factor 1, fibroblast growth factor 2, and fibroblast growth factor 9 on sirtuins expression and histone deacetylase activity in bovine granulosa cells Theriogenology 2023-07-12 [PMID: 37454576] (Bioassay, Bovine) Bioassay Bovine
Meng, F;Zhang, S;Xie, J;Zhou, Y;Wu, Q;Lu, B;Zhou, S;Zhao, X;Li, Y; Leveraging CD16 fusion receptors to remodel the immune response for enhancing anti-tumor immunotherapy in iPSC-derived NK cells Journal of hematology & oncology 2023-06-14 [PMID: 37316891] (Bioassay, Human) Bioassay Human
Nguyen, VTT;Taheri, N;Choi, EL;Kellogg, TA;Linden, DR;Hayashi, Y; Insulin-like growth factor1 preserves gastric pacemaker cells and motor function in aging via ERK1/2 activation Cellular and molecular gastroenterology and hepatology 2023-06-08 [PMID: 37301443] (Bioassay, Mouse) Bioassay Mouse
Rashid, MI;Ito, T;Miya, F;Shimojo, D;Arimoto, K;Onodera, K;Okada, R;Nagashima, T;Yamamoto, K;Khatun, Z;Shimul, RI;Niwa, JI;Katsuno, M;Sobue, G;Okano, H;Sakurai, H;Shimizu, K;Doyu, M;Okada, Y; Simple and efficient differentiation of human iPSCs into contractible skeletal muscles for muscular disease modeling Scientific reports 2023-05-25 [PMID: 37231024] (Bioassay, Human) Bioassay Human
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
Show All 218 Publications.

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Bioinformatics

Gene Symbol IGF1
Uniprot