Product Details

Purity

≥ 95% as determined by SDS-PAGE.

Endotoxin

Less than 0.5 EU/µg as determined by LAL method.

Activity

The ED50 as determined in a serum-free cell proliferation assay using MCF‑7 human breast cancer cells is 20-100 ng/ml.

Target Names

IGF1

Uniprot No.

P05019

Research Area

Signal Transduction

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

52-118aa

Complete Sequence

TLCGAELVDALQFVCGDRGFYFNKPTGYGSSSRRAPQTGIVDECCFRSCDLRRLEMYCAPLKPAKSA

Mol. Weight

7.3 kDa

Protein Length

Partial

Tag Info

Tag-Free

Form

Lyophilized powder

Buffer

Lyophilized from a 0.2 μm Filtered 20 mM NaAc-HAC, pH 4.5

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.

Troubleshooting and FAQs

Protein FAQs

Storage Condition

Store at -20°C/-80°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.

Description

IGF1 plays a central role in mitogenic signaling through the IGF1R axis, making reliable recombinant preparations essential for dissecting proliferation and survival pathways. This tag-free human IGF1 partial construct, spanning residues 52–118 and representing the mature bioactive sequence, demonstrates an ED50 of 20–100 ng/mL in a serum-free MCF-7 cell proliferation assay, confirming receptor-binding potency suitable for cell proliferation and survival studies, stem cell or osteogenic differentiation protocols, and receptor-ligand competition assays using ELISA or SPR. Production in *E. coli* is well-matched to IGF1's biology, as the native protein lacks glycosylation, ensuring that bacterially expressed material retains full functional fidelity without the need for mammalian post-translational processing. Purity exceeding 95% by SDS-PAGE combined with endotoxin levels below 0.5 EU/µg satisfies the criteria typical for serum-free cell-based assays and supports use in sensitive in vivo tumor biology models.

Target Background

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. Ca(2+)-dependent exocytosis of IGF1 is required for sensory perception of smell in the olfactory bulb. Acts as a ligand for IGF1R. Binds to the alpha subunit of IGF1R, leading to the activation of the intrinsic tyrosine kinase activity which autophosphorylates tyrosine residues in the beta subunit thus initiatiating a cascade of down-stream signaling events leading to activation of the PI3K-AKT/PKB and the Ras-MAPK pathways. Binds to integrins ITGAV:ITGB3 and ITGA6:ITGB4. Its binding to integrins and subsequent ternary complex formation with integrins and IGFR1 are essential for IGF1 signaling. Induces the phosphorylation and activation of IGFR1, MAPK3/ERK1, MAPK1/ERK2 and AKT1.

Gene References into Functions

SNX6 knockdown resulted in a dramatic diminution of IGF1-mediated ERK1/2 phosphorylation, but did not affect IGF1R internalization. PMID: 29530981
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
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
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
This article reviews the tumor-specific molecular signatures of IGF-1-mediated epithelial-mesenchymal transition in breast, lung, and gastric cancers. [review] PMID: 30111747
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
The molecular interactions of IGF1-IGF1R binding have been dissected. PMID: 29483580
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
Low IGF-I levels are associated with non-alcoholic fatty liver disease. PMID: 29395967
Low IGF1 expression is associated with retinopathy of prematurity. PMID: 29274846
Low IGF-I levels are associated with dry eye syndrome. PMID: 29452886
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
insulin-like growth factor 1 (IGF1) is a direct target of miR-1827. PMID: 28387248
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
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
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
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
pituitary growth hormone secretory capacity is not related to the IGF-1 levels PMID: 29098662
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
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
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
results indicate that IGF-1 gene polymorphisms play crucial roles in the histopathological progression of IgA Nephropathy in the Chinese Han population PMID: 29402846
Low IGF1 level is associated with steatosis in Pituitary Diseases. PMID: 29065431
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
Mechanism of activation of SGK3 by IGF1 via the class 1 and class 3 phosphatidylinositol 3-kinases has been described. PMID: 29150437
IGF1 is associated with giant cell tumor of bone recurrence, which might serve as biomarker for giant cell tumor of bone recurrence PMID: 29651441
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
Report deregulation of IGF1/IGFBP3 expression in breast cancer correlating with neoplasm staging and histologic grade. PMID: 30084561
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
Overexpression of circHIPK3 increased the expression levels of IGF1 and knock-down reduced it. PMID: 28738961
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
IGF-1 exerts antioxidant, anti-inflammatory and protective effects on the central nervous system. (Review) PMID: 29975480
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
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
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
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
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
Consistent with its enhanced expression in Laron syndrome, we provide evidence that TXNIP gene expression is negatively regulated by IGF1. PMID: 29339473
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
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
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
Demonstrate the uptake of fluorescently labeled IGF-I into skeletal growth plates of live mice using multiphoton microscopy. PMID: 28798204
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
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
association between serum IGFBP-1 and IGF-I levels with advanced fibrosis in non-alcoholic fatty liver disease patients PMID: 28927302
findings suggest that the IGF1 polymorphism rs5742714 may be a genetic predictor of susceptibility and prognosis of renal cell carcinoma. PMID: 27976731
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
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
Peripheral blood aspirates overexpressing IGF-I via rAAV gene transfer undergo enhanced chondrogenic differentiation processes. PMID: 28467017
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

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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

Code	CSB-AP003721HU
Abbreviation	Recombinant Human IGF1 protein, partial (Active)
MSDS	MSDS Datasheet
Size	$48
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Image	(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Recombinant Human Insulin-like growth factor I (IGF1), partial (Active)

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