Recombinant Human Insulin-like growth factor I protein(IGF1) (Active)

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Code CSB-AP001971HU
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Product Details

Purity >95% as determined by SDS?PAGE and HPLC.
Endotoxin Less than 1.0 EU/μg as determined by LAL method.
Activity Fully biologically active when compared to standard. The ED50 as determined by the stimulation of protein synthesis using rat L6 myoblasts is less than 10 ng/ml, corresponding to a specific activity of >1.0x105 IU/mg.
Target Names IGF1
Uniprot No. P05019
Research Area Cancer
Alternative Names IBP1; IGF I; IGF IA; IGF IB; IGF-I; Igf1; IGF1_HUMAN; IGF1A; IGFI; IGFIA; Insulin like growth factor 1 (somatomedin C) ; Insulin like growth factor 1; Insulin like growth factor IA; Insulin like growth factor IB; Insulin-like growth factor I; Mechano growth factor; MGF; OTTHUMP00000195080; OTTHUMP00000195081; OTTHUMP00000195082; OTTHUMP00000195083; OTTHUMP00000195084; Somatomedia C; Somatomedin C; Somatomedin-C
Species Homo sapiens (Human)
Source E.coli
Expression Region 49-118aa
Mol. Weight 9.1 kDa
Protein Length Full Length of Mature Protein
Tag Info Tag-Free
Form Lyophilized powder
Buffer Lyophilized from a 0.2 m filtered PBS, pH 7.0
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
and FAQs
Protein FAQs
Storage Condition Store at -20°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Basically, we can dispatch the products out in 5-10 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA Please contact us to get it.

Target Data

Function The insulin-like growth factors, isolated from plasma, are structurally and functionally related to insulin but have a much higher growth-promoting activity. May be a physiological regulator of [1-14C]-2-deoxy-D-glucose (2DG) transport and glycogen synthesis in osteoblasts. Stimulates glucose transport in bone-derived osteoblastic (PyMS) cells and is effective at much lower concentrations than insulin, not only regarding glycogen and DNA synthesis but also with regard to enhancing glucose uptake. May play a role in synapse maturation
Gene References into Functions
  1. SNX6 knockdown resulted in a dramatic diminution of IGF1-mediated ERK1/2 phosphorylation, but did not affect IGF1R internalization. PMID: 29530981
  2. We found that elevated production of insulin-like growth factor 1 by polyploid ASCs rendered them more potent in tumor growth promotion in vitro. PMID: 30185144
  3. No up-regulation of Wnt10A and IGF-1 mRNA was observed with 1,550-nm Er:Glass fractional laser treatment of androgenetic alopecia. PMID: 30096107
  4. Significant negative or positive correlations were observed between IGF-1 concentrations and impairments on several EDI-2 subscales (drive for thinness, body dissatisfaction, interoceptive awareness, sense of ineffectiveness, interpersonal distrust, maturity fear) and on SCL-90 subitems (depression, hostility, obsessivity compulsivity, anxiety), suggesting a possible hormonal modulatory effect on specific aspects of eatin PMID: 29179911
  5. This article reviews the tumor-specific molecular signatures of IGF-1-mediated epithelial-mesenchymal transition in breast, lung, and gastric cancers. [review] PMID: 30111747
  6. Results provide evidence for the role of IGF-I: matrix protein interactions in cell growth, migration and melanoma progression through forming a complex with IGF binding proteins. PMID: 29330502
  7. The molecular interactions of IGF1-IGF1R binding have been dissected. PMID: 29483580
  8. genetic association and nutrigenomic studies in population of postmenopausal women in China: Data confirm that dietary acid load is associated with postmenopausal osteoporosis; an SNP in IGF1 (rs35767) is not associated with this relationship in the population studied. PMID: 30018240
  9. Low IGF-I levels are associated with non-alcoholic fatty liver disease. PMID: 29395967
  10. Low IGF1 expression is associated with retinopathy of prematurity. PMID: 29274846
  11. Low IGF-I levels are associated with dry eye syndrome. PMID: 29452886
  12. serum IGF-1 is associated with more muscle mass, higher bone mineral density, and better handgrip performance in both genders among community-dwelling middle aged and older adults in Taiwan PMID: 28351218
  13. insulin-like growth factor 1 (IGF1) is a direct target of miR-1827. PMID: 28387248
  14. Results found that the expression of IGF-1 was up-regulated in cumulus cells (CCs) of women with polycystic ovary syndrome (PCOS), which was inversely proportional to the expression level of miR-323. Also, IGF1 3'UTR is targeted by miR-323. PMID: 30300681
  15. Study in hepatocellular carcinoma cell line elicited a new mechanism in which IGF-1 induced epithelial-mesenchymal transition through regulation of survivin and a downstream pathway. PMID: 29989646
  16. in this study, the influence of IGF-1 and BMP-7 in different concentrations on the osteogenic differentiation of two human MSC-subtypes, isolated from reaming debris (RMSC) and iliac crest bone marrow (BMSC) has been assessed PMID: 29874864
  17. AMH, IGF1 and leptin levels in follicular fluid have no relation to the fertility disorders caused by endometriosis or fallopian tube damage, though they are biomarkers for anovulatory fertility disorders. PMID: 29595066
  18. pituitary growth hormone secretory capacity is not related to the IGF-1 levels PMID: 29098662
  19. Peripheral totalIGF-1 and IGFBP-3 were associated with better performance in attention, visuospatial, and global cognitive domains, independent of the gait speed. PMID: 29547749
  20. CA repeat polymorphism of the P1 promoter of the IGF1 gene was associated with strength predispositions in the homozygous and non-carriers groups. In the group who were heterozygous it was speed-strength aptitudes. PMID: 29543920
  21. IGF1 levels in systemic lupus erythematosus patients decline with age at a similar rate as in healthy controls, are associated with positive metabolic effects and despite a moderating effect on B, NK and CD8+ cells, do not affect clinical disease activity or severity. PMID: 29385899
  22. results indicate that IGF-1 gene polymorphisms play crucial roles in the histopathological progression of IgA Nephropathy in the Chinese Han population PMID: 29402846
  23. Low IGF1 level is associated with steatosis in Pituitary Diseases. PMID: 29065431
  24. They retained the main IGF-1R-related properties, but the hormones with His49 in IGF-1 and His48 in IGF-2 showed significantly higher affinities for IR-A and for IR-B, being the strongest IGF-1- and IGF-2-like binders of these receptors ever reported. PMID: 29608283
  25. Mechanism of activation of SGK3 by IGF1 via the class 1 and class 3 phosphatidylinositol 3-kinases has been described. PMID: 29150437
  26. IGF1 is associated with giant cell tumor of bone recurrence, which might serve as biomarker for giant cell tumor of bone recurrence PMID: 29651441
  27. miR-19b is decreased in PCOS granulosa cells and miR-19b could be a granulosa cell proliferation inhibitor. miR-19b-mediated cell proliferation may act via directly targeting IGF-1. PMID: 29363717
  28. Report deregulation of IGF1/IGFBP3 expression in breast cancer correlating with neoplasm staging and histologic grade. PMID: 30084561
  29. Study observed that the IGF1 level was higher in human epithelial ovarian cancer (EOC) specimens than that in benign ovarian tumor specimens, and further analysis showed that a higher level of IGF1 was related to more advanced clinical stage and liver metastasis. Also, up-regulation of IGF1 by tumor-associated macrophages was shown to promote the proliferation and migration of EOC cell lines. PMID: 29251331
  30. Overexpression of circHIPK3 increased the expression levels of IGF1 and knock-down reduced it. PMID: 28738961
  31. 0001) only. Women who remained obese had increased cGP/IGF-1 ratio (p = 0.006) only. Increase in cGP/IGF-1 ratio is associated with obesity, but not hypertension. Changes of IGFBP-3 and/or cGP/IGF-1 ratio are associated with weight changes. The data suggest the role for cGP in obesity through autocrine regulation of IGF-1. PMID: 29921371
  32. IGF-1 exerts antioxidant, anti-inflammatory and protective effects on the central nervous system. (Review) PMID: 29975480
  33. Five single nucleotide polymorphisms (SNPs) of IGF-1 (rs6214, rs6218, rs35767, rs5742612, and rs5742714) were genotyped. DNA was extracted from peripheral blood and analyzed for SNP genotyping using PCR. rs6218 had a predictive role for the susceptibility and progression of osteosarcoma. The TC and CC genotypes of rs6218 indicated higher risk of osteosarcoma; associated with later stage and elevated risk of osteosarcoma PMID: 29232358
  34. Bio informatics analysis of 982 lung cancer patients revealed that higher expression of TNF- alpha was associated with low risk of cancer progression while overexpression of IGF-1 was correlated with high risk. Collectively, these results reveal that the cytokines in the tumor microenvironment differentially modulate radiation therapy through a variety of signaling mechanisms. PMID: 27344406
  35. Data suggest that lower IGF1 serum levels in aging are associated with lower handgrip strength and worse physical performance, but less recurrent falls, especially in men. This longitudinal study was conducted in the Netherlands. PMID: 29789408
  36. Data suggest that R1353H point mutation constitutes an activating IGF1R variant that can result in extreme tall height with very low levels of serum IGFI; the mutation was observed in proband, his mother, and his 3 sons, however, only the proband (43 y/o) and eldest son (18 y/o) exhibit extreme tall height. [CASE REPORT] PMID: 29789409
  37. IGF-1 treatment activated protein kinase B (AKT), which may inhibit autophagy via the AKT/mammalian target of rapamycin signaling pathway. Following inhibition of autophagy, drug resistant cells became sensitive to apoptosis induced by 5-fluorouracil. PMID: 29257307
  38. Consistent with its enhanced expression in Laron syndrome, we provide evidence that TXNIP gene expression is negatively regulated by IGF1. PMID: 29339473
  39. In elderly women with low-energy distal radius fractures, an association between IGF1 and lowest measures of bone mineral density was found, indicating that low IGF1 could be an indirect risk factor for fractures. PMID: 29178313
  40. Expression of miR-30a-3p was significantly increased in the placentas of patients with preeclampsia. miR-30a-3p might be involved in the pathogenesis of preeclampsia by targeting IGF-1 and regulating the invasion and apoptosis of trophoblast cells. PMID: 29155142
  41. results suggest that the different isoforms of the PI3K p110 subunit could be therapeutic targets for primary and metastatic colon cancer and that regulation of the NRD1/ADAM signaling pathway controls lipogenesis-mediated EMT in IGF-1-stimulated colon cancer cells. PMID: 28819788
  42. Demonstrate the uptake of fluorescently labeled IGF-I into skeletal growth plates of live mice using multiphoton microscopy. PMID: 28798204
  43. Study provides evidence that IGF-1/IGF-1R/hsa-let-7c axis can control the odonto/osteogenic differentiation of IGF-1-treated stem cells from apical papilla via the regulation of JNK and p38 MAPK signaling pathways. PMID: 27833148
  44. Circulating sex steroids, prolactin, insulin-like growth factor (IGF) I, IGF-binding protein 3, and sex hormone-binding globulin (SHBG) were evaluated using backward elimination separately in women pre- and postmenopausal at blood collection. PMID: 28246273
  45. association between serum IGFBP-1 and IGF-I levels with advanced fibrosis in non-alcoholic fatty liver disease patients PMID: 28927302
  46. findings suggest that the IGF1 polymorphism rs5742714 may be a genetic predictor of susceptibility and prognosis of renal cell carcinoma. PMID: 27976731
  47. The results of the study may help to inform future health interventions that utilize physical activity as a means to improve cognitive development in children, adolescents, and adults. Additionally, the study may assist in determining whether the putative effects occur via modification of plasma IGF-1 or BDNF concentrations. PMID: 29094050
  48. Data show the differential expression of insulin like growth factor 1 (IGF-I) transcripts isoforms in bladder cancer, revealing a distinct suppression of IGF-IEc. PMID: 29848696
  49. Peripheral blood aspirates overexpressing IGF-I via rAAV gene transfer undergo enhanced chondrogenic differentiation processes. PMID: 28467017
  50. Human IGF-I propeptides and mutants were overexpressed in bovine articular chondrocytes. Secreted IGF-I propeptides stimulated articular chondrocyte biosynthetic activity as much as mature IGF-I. Of the 3 IGF-I propeptides, only proIGF-IA strongly bound to heparin, depending on N-glycosylation at Asn92 in the EA peptide. PMID: 29174671
  51. knockdown of Sema4D in Head and neck squamous cell carcinomas (HNSCCs)cells inhibited tumor growth and decreased the number of osteoclasts in a mouse xenograft model. Taken together, IGF-I-driven production of Sema4D in HNSCCs promotes osteoclastogenesis and bone invasion. PMID: 28656278
  52. analysis of IGFBP3-IGF1 correlation with the risk of esophageal carcinoma PMID: 28596684
  53. Studies indicate the role of the insulin-like growth factor 1 (IGF1) - phosphoinositide 3-kinase (PI3K)-Akt signaling pathway in regulating exercise-induced physiological cardiac hypertrophy and cardiac protection [Review]. PMID: 29098623
  54. This review describes the endocrine profile of centenarians concerning the GH/IGF-I/insulin system, focusing on the relevance of this pathway on the modulation of ageing and longevity. PMID: 27932301
  55. these results uncover a fine, germane crosstalk between the endocrine-metabolic status and the development and homeostasis of the prostate gland, wherein key components of the growth hormone, insulin and IGF1 axes could play a relevant pathophysiological role. PMID: 28244645
  56. Studied association of occurrence of spontaneous preterm birth with insulin-like growth factor (IGF1) rs972936 and insulin-like growth factor 1 receptor (IGF1R) rs2229765 genetic polymorphisms. PMID: 28213921
  57. relationship of testosterone, sex hormone-binding globulin (SHBG), and IGF-1 with bone mineral density (BMD) and bone turnover markers (BTMs) in Korean men, is reported. PMID: 27873076
  58. To investigate associations of the CA microsatellite and rs35767, rs5742612, and rs2288377 polymorphisms and the single nucleotide polymorphism (SNP) haplotypes with and without the CA microsatellite in the IGF1 promoter with insulin sensitivity and secretion. PMID: 28761040
  59. rs35767 TT allele carriers exhibited significantly higher concentrations of Hb, and lower risk of anemia compared with C allele carriers supporting the idea that IGF-1 plays a role in erythropoiesis homeostasis. PMID: 28415730
  60. the recent finds of IGF-1 gene polymorphism and its relationship with the risk of breast cancer (Review) PMID: 27925035
  61. Circulating Insulin-like Growth Factor-1 and Insulin-like Growth Factor Binding Protein-3 predict Three-months Outcome after Ischemic Stroke. PMID: 28724170
  62. These findings reveal that IGFBP3 is effective in lung cancer cells with high IGF1 signaling activity and imply that relevant biomarkers are essential in selecting lung cancer patients for IGF1-targeted therapy PMID: 28330997
  63. These data support the hypothesis that down regulation of the insulin-like growth factor (IGF-I) signaling links decidual phosphorylated insulin-like growth factor-binding protein (IGFBP-1) hyperphosphorylation to restricted fetal growth in placental insufficiency. PMID: 28435049
  64. These data implicate insulin resistance as a potential suppressor of IGF-I-dependent cortical bone development. PMID: 28300329
  65. Study found that exercise increased hippocampal IGF-I levels only in cycling females through estrogen stimulation. These results suggest that sex-specific brain IGF-I responses to physiological stimuli such as exercise contribute to dimorphic mood homeostasis that may explain sex differences in affective disorders. PMID: 27170462
  66. The results show that IGF1 levels were lower in NAFLD patients and suggest that the growth hormone-IFG1 system may be involved in the pathogenesis of NAFLD. PMID: 29364093
  67. results suggest that rs35767 is associated with osteoporosis risk in Chinese, whereas there is no association of rs2288377 and rs5742612 with osteoporosis risk PMID: 29390475
  68. In type 2 diabetic patients insulin glargine depressed the serum IGF1 levels much more when compared to insulin detemir. PMID: 28394183
  69. High IGF-1 serum levels are associated with breast cancer. PMID: 28258988
  70. association of IGF-1 with coronary collateral circulation in stable coronary artery disease PMID: 28685580
  71. IGF-1 was negatively correlated with changes in pro-inflammatory cytokine levels in community-dwelling elderly people at risk of undernutrition PMID: 27933679
  72. High IGF1 serum levels improve skeletal muscle performance and physical capacity. PMID: 28017505
  73. IGF 1245T polymorphism is associated with long distance running success. PMID: 28007336
  74. exercise-induced alterations in gene expression are impacted by the prediabetic state PMID: 29351335
  75. there was a high heritability for IGF-I and IGFBP-3, but a low heritability for insulin secretion and insulin sensitivity in a group of elderly twins; in addition, study found a negative relationship between IGF-I and insulin sensitivity, which did not seem to be strongly genetically determined PMID: 29208737
  76. In short, thin children, despite elevated ghrelin production, the low IGF-I concentration is observed, probably due to undernutrition and worse IGF-I formation. In short, normal-weight children and in short, obese ones, ghrelin and IGF-I production is normal, and it seems that mechanisms responsible for their short stature are other than low IGF-I. PMID: 27557428
  77. Individualized resistance exercise in lean patients with fibromyalgia resulted in decreases in serum IGF-1. PMID: 28288611
  78. Data suggest that Y537S/D538G ESR1 mutant breast cancer cell lines exhibit enhanced proliferation in response to IGF1/IGF1R signaling; mechanism involves IRS1; here, knockdown of IRS1 attenuates enhanced IGF1/IGF1R signaling response in ESR1 mutant cells. (ESR1 = estrogen receptor 1; IGF1 = insulin like growth factor 1; IGF1R = IGF1 receptor; IRS1 = insulin receptor substrate 1) PMID: 29029116
  79. Meta-analysis suggests that IGF1 gene single nucleotide polymorphism (rs5742612) is not significant associated with susceptibility to adolescent idiopathic scoliosis (AIS) in either Asian or Caucasian populations. However, IGF1 gene rs5742612 may be associated with severity of AIS. PMID: 27554350
  80. Fifteen minutes bicycling at moderate intensity was sufficient to acutely mobilize serum IGF-1 in women with fibromyalgia. PMID: 28122522
  81. High IGF-1 plasma concentrations in women with endometrial cancer were reversed by conventional antidiabetic doses of metformin. PMID: 27654259
  82. Serum IGF-I levels were significantly decreased in Japanese patients with uncontrolled T2DM. PMID: 27060213
  83. As there was no significant association between FGF-21 and growth or IGF-1 both in cross-sectional and longitudinal analyses, these findings do not support the hypothesis that FGF-21 is involved in growth of obese children. PMID: 26887040
  84. C-Jun and CREB are recruited to ESR2 or CYP19A1 promoter by IGF-I stimulation. PMID: 26899323
  85. We discuss methodological shortcomings of our study and potential differences in the temporal dynamics of how IGF-1, VEGF and BDNF may be affected by exercise and to what extent these differences may have led to the negative findings reported here. PMID: 26545456
  86. IGFBP-1 had a positive linear relation to fracture risk, partly mediated by bone mineral density (BMD) but not related to IGF-I or BMD PMID: 27215930
  87. Data show that single-nucleotide polymorphisms (SNPs) of the IGF1R (rs12423791), and IGF1 (rs2162679, rs5742612, rs35767) genes were significantly associated with tumor response to oxaliplatin, 5-fluorouracil, and leucovorin (FOLFOX). PMID: 27144430
  88. The present study shows that rs972936 polymorphism may increase susceptibility to PD, especially in males and late-onset patients. Furthermore, high serum IGF1 levels may be a potential diagnostic biomarker for PD in the Han Chinese population, although they do not correlate with a more severe motor dysfunction. PMID: 28221705
  89. A low preoperative circulating IGF-1 level, delayed recovery of IGF-1 levels after hepatectomy, and microvascular invasion were significantly associated with an increased risk of early recurrence in hepatocellular carcinoma patients. PMID: 28182337
  90. Growth hormone (GH) demonstrates differential increases in recovery with RE based on the type of GH being assayed and workout being used. IGF-1 shows variable increases in recovery with RE and is intimately linked to a host of binding proteins that are essential to its integrative actions and mediating targeting effects. PMID: 27856715
  91. According to IGF-1 roles in the central nervous system, this study suggests that low IGF-1 level may be associated with susceptibility to multiple sclerosis. PMID: 28427698
  92. Total IGF-I was not significantly associated with incident diabetes PMID: 29040592
  93. selective impairment of IGF-1-induced DNA synthesis in lymphocytes of CDG patients through decreased gene expression and hypoglycosylation of the IGF-1 receptor PMID: 27089502
  94. The concentrations of IGF-1 were positively correlated with tumor size of NPC patients (p<0.01). IGF-I could be a good nasopharyngeal cancer diagnostic marker. PMID: 27312888
  95. IGF-1 induces the recruitment and function of adipose-derived stem cells by up-regulating the expression of PDGFB, MMPs and alpha-SMA PMID: 28960620
  96. results suggest that further research is necessary to elucidate the role of BDNF in alcohol-induced toxicity and the biological significance of the lack of correlation between age and plasma IGF-1 levels in abstinent AUD patients PMID: 29108028
  97. This meta-analysis showed there was no association detected between IGF1 rs6214 and high myopia. PMID: 28135889
  98. Endoplasmic reticulum stress-induced CHOP activation in the brain is a mechanistic link in the palmitate-induced negative regulation of leptin and IGF1. PMID: 27555288
  99. the dipeptide Pro-Asp promoted IGF-1 secretion and expression in hepatocytes. PMID: 27473671
  100. Genetic variants in the IGF1 and IGF1R genes might not be associated with high myopia in Han Chinese. Further studies are needed to verify the possible function of IGF1 and IGF1R in the development of myopia. PMID: 27044882

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Involvement in disease Insulin-like growth factor I deficiency (IGF1 deficiency)
Subcellular Location Secreted
Protein Families Insulin family
Database Links

HGNC: 5464

OMIM: 147440

KEGG: hsa:3479

STRING: 9606.ENSP00000302665

UniGene: Hs.160562

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