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Recombinant Human Insulin-like growth factor 1 receptor (IGF1R), partial (Active)

Recombinant Human Insulin-like growth factor 1 receptor (IGF1R), partial (Active)

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Code: CSB-MP011087HU1

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20ug100ug1mg

US$136

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Express system: Mammalian cell

Species: Homo sapiens (Human)

Tag Info: C-terminal 10xHis-tagged

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Target Background

Product Details

Abbreviation

Recombinant Human IGF1R protein, partial (Active)

Purity

Greater than 90% as determined by SEC-HPLC.
Greater than 95% as determined by SDS-PAGE.

Endotoxin

Less than 1.0 EU/ug as determined by LAL method.

Activity

Measured by its binding ability in a functional ELISA. Immobilized Human IGF1R at 2 μg/mL can bind Anti-IGF1R recombinant antibody (CSB-RA011087MA2HU). The EC50 is 1.479-1.702 ng/mL.

Target Names

IGF1R

Uniprot NO.

P08069

Alternative Names

Insulin-like growth factor 1 receptor; EC:2.7.10.1; Insulin-like growth factor I receptor (IGF-I receptor); CD221; IGF1R

Species

Homo sapiens (Human)

Source

Mammalian cell

Expression Region

31-932aa

Target Protein Sequence

EICGPGIDIRNDYQQLKRLENCTVIEGYLHILLISKAEDYRSYRFPKLTVITEYLLLFRVAGLESLGDLFPNLTVIRGWKLFYNYALVIFEMTNLKDIGLYNLRNITRGAIRIEKNADLCYLSTVDWSLILDAVSNNYIVGNKPPKECGDLCPGTMEEKPMCEKTTINNEYNYRCWTTNRCQKMCPSTCGKRACTENNECCHPECLGSCSAPDNDTACVACRHYYYAGVCVPACPPNTYRFEGWRCVDRDFCANILSAESSDSEGFVIHDGECMQECPSGFIRNGSQSMYCIPCEGPCPKVCEEEKKTKTIDSVTSAQMLQGCTIFKGNLLINIRRGNNIASELENFMGLIEVVTGYVKIRHSHALVSLSFLKNLRLILGEEQLEGNYSFYVLDNQNLQQLWDWDHRNLTIKAGKMYFAFNPKLCVSEIYRMEEVTGTKGRQSKGDINTRNNGERASCESDVLHFTSTTTSKNRIIITWHRYRPPDYRDLISFTVYYKEAPFKNVTEYDGQDACGSNSWNMVDVDLPPNKDVEPGILLHGLKPWTQYAVYVKAVTLTMVENDHIRGAKSEILYIRTNASVPSIPLDVLSASNSSSQLIVKWNPPSLPNGNLSYYIVRWQRQPQDGYLYRHNYCSKDKIPIRKYADGTIDIEEVTENPKTEVCGGEKGPCCACPKTEAEKQAEKEEAEYRKVFENFLHNSIFVPRPERKRRDVMQVANTTMSSRSRNTTAADTYNITDPEELETEYPFFESRVDNKERTVISNLRPFTLYRIDIHSCNHEAEKLGCSASNFVFARTMPAEGADDIPGPVTWEPRPENSIFLKWPEPENPNGLILMYEIKYGSQVEDQRECVSRQEYRKYGGAKLNRLNPGNYTARIQATSLSGNGSWTDPVFFYVQAKTGYEN
Note: The complete sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application, please explicitly request the full and complete sequence of this protein before ordering.

Mol. Weight

104.2 kDa

Protein Length

Partial

Tag Info

C-terminal 10xHis-tagged
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.

Buffer

Lyophilized from a 0.2 μm sterile filtered PBS, 6% Trehalose, pH 7.4

Storage

Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.

Lead Time

3-7 business days
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.

Notes

Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Shelf Life

The shelf life is related to many factors, storage state, storage temperature and the stability of the product itself. Generally, the shelf life of lyophilized form is 6 months at -20°C/-80°C from the date of receipt.

Troubleshooting and FAQs

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Datasheet & COA

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Images

(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
Activity
Measured by its binding ability in a functional ELISA. Immobilized Human IGF1R at 2 μg/ml can bind Anti-IGF1R recombinant antibody (CSB-RA011087MA2HU). The EC₅₀ is 1.479-1.702 ng/mL.
The purity of IGF1R was greater than 90% as determined by SEC-HPLC

Description

IGF1R mediates insulin-like growth factor signaling and drives proliferation in numerous cancer types, making it a validated target for therapeutic antibody development and small-molecule inhibitor screening. This mammalian-expressed construct spanning residues 31–932 captures the complete extracellular ligand-binding domain and transmembrane region, preserving the native glycosylation and disulfide architecture required for physiological receptor conformation. Functional ELISA validation demonstrates specific antibody binding with an EC50 of 1.479–1.702 ng/mL, confirming that the protein retains epitopes critical for therapeutic antibody epitope mapping, competitive inhibition assays, and blocking antibody screening campaigns. Purity exceeding 90% by SEC-HPLC and endotoxin levels below 1.0 EU/μg align with standards expected in surface plasmon resonance affinity characterization, biolayer interferometry kinetic studies, and ligand-receptor interaction assays where low contaminant interference is essential for accurate KD determination.

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Target Background

Function(From Uniprot)

Receptor tyrosine kinase which mediates actions of insulin-like growth factor 1 (IGF1). Binds IGF1 with high affinity and IGF2 and insulin (INS) with a lower affinity. The activated IGF1R is involved in cell growth and survival control. IGF1R is crucial for tumor transformation and survival of malignant cell. Ligand binding activates the receptor kinase, leading to receptor autophosphorylation, and tyrosines phosphorylation of multiple substrates, that function as signaling adapter proteins including, the insulin-receptor substrates (IRS1/2), Shc and 14-3-3 proteins. Phosphorylation of IRSs proteins lead to the activation of two main signaling pathways: the PI3K-AKT/PKB pathway and the Ras-MAPK pathway. The result of activating the MAPK pathway is increased cellular proliferation, whereas activating the PI3K pathway inhibits apoptosis and stimulates protein synthesis. Phosphorylated IRS1 can activate the 85 kDa regulatory subunit of PI3K (PIK3R1), leading to activation of several downstream substrates, including protein AKT/PKB. AKT phosphorylation, in turn, enhances protein synthesis through mTOR activation and triggers the antiapoptotic effects of IGFIR through phosphorylation and inactivation of BAD. In parallel to PI3K-driven signaling, recruitment of Grb2/SOS by phosphorylated IRS1 or Shc leads to recruitment of Ras and activation of the ras-MAPK pathway. In addition to these two main signaling pathways IGF1R signals also through the Janus kinase/signal transducer and activator of transcription pathway (JAK/STAT). Phosphorylation of JAK proteins can lead to phosphorylation/activation of signal transducers and activators of transcription (STAT) proteins. In particular activation of STAT3, may be essential for the transforming activity of IGF1R. The JAK/STAT pathway activates gene transcription and may be responsible for the transforming activity. JNK kinases can also be activated by the IGF1R. IGF1 exerts inhibiting activities on JNK activation via phosphorylation and inhibition of MAP3K5/ASK1, which is able to directly associate with the IGF1R.; When present in a hybrid receptor with INSR, binds IGF1. PubMed:12138094 shows that hybrid receptors composed of IGF1R and INSR isoform Long are activated with a high affinity by IGF1, with low affinity by IGF2 and not significantly activated by insulin, and that hybrid receptors composed of IGF1R and INSR isoform Short are activated by IGF1, IGF2 and insulin. In contrast, PubMed:16831875 shows that hybrid receptors composed of IGF1R and INSR isoform Long and hybrid receptors composed of IGF1R and INSR isoform Short have similar binding characteristics, both bind IGF1 and have a low affinity for insulin.

Gene References into Functions

MiR133a and miR133b may bind near rs1815009, and miR455 near rs2684788, within IGF1R 3'UTR. PMID:30365147
study confirms the utility of proximity-labeling methods, such as BioID, to screen for interactors of cell-surface receptors and has uncovered a role of one of these interactors, SNX6, in the IGF1R signaling cascade. PMID:29530981
Elevations of TGF-beta3, SMAD2 and SMAD4 in hypertrophic scars and increase of IGF-1R in immature stages may give some clues for acne hypertrophic scar formation. PMID:30167815
miR-30a-5p could influence chemo-resistance by targeting IGF1R gene in melanoma cells, which might provide a potential target for the therapy of chemo-resistant melanoma cells. PMID:29642855
IGF-1R signalling contributes to T cell dependent inflammation in arthritis. Inhibition of IGF-1R on the level of insulin receptor substrates alleviates arthritis by restricting IL6-dependent formation of Th17 cells and may open for new treatment strategies in rheumatoid arthritis. PMID:28583713
Novel G310D variant in the insulin-like growth factor 1 receptor gene is associated with type 2 diabetes. PMID:29470850
higher IGF-IR mRNA expression observed in obese children, associated with the higher IGF-I and ALS and the lower IGFBP-1 levels PMID:29150385
Study results revealed that microRNA-320a suppresses tumor cell growth and invasion of human breast cancer by targeting IGF-1R. PMID:29989645
miR539 may inhibit the aggressive behaviour of PDAC by directly targeting IGF1R and may serve as a novel therapeutic target for patients with this disease PMID:29901181
Data suggest that NEAT1, SRC3, and IGF1R are highly expressed in prostate cancer cells; NEAT1 appears to interact with SRC3 and promote cell proliferation via up-regulation of SRC3/IGF1R/AKT signaling pathway. (NEAT1 = nuclear paraspeckle assembly transcript-1; SRC3 = steroid receptor coactivator protein-3; IGF1R = insulin-like growth factor 1 receptor) PMID:29225160
Results showed that the expression of IGF1R appears to be highly correlated with the expression of ABCG2 in osteosarcoma and with the expression of CD44 in osteosarcoma patients under age of 10. PMID:29892839
Here the authors report a nodal role of IGF-IR in the regulation of ERalpha-positive breast cancer cell aggressiveness and the regulation of expression levels of several extracellular matrix molecules. PMID:28079144
Long noncoding RNA PVT1 enhances the expression of IGF1R through competitive binding to miR-30a. PMID:29803929
The association between the growth hormone-insulin-like growth factor-1 (GH-IGF-1) axis gene polymorphisms and short stature in Chinese children. PMID:29687007
High IGF1R expression is associated with non-small cell lung cancer. PMID:29328495
Our findings suggest that CKS1BP7 as well as IGF1R may serve as potential biomarkers for early detection and predict prognosis in breast cancer. PMID:28439706
High IGF-IR expression is associated with Ras and BRAF mutations in Hepatocellular Carcinoma. PMID:28188432
MicroRNA-381 inhibits cell proliferation and invasion in endometrial carcinoma by targeting the IGF-1R. PMID:29257334
IGF-1R and AKT inhibitors further increased apoptosis by Nutlin-3a in parental MHM cells and the cisplatin-resistant clones, confirming IGF-1R/AKT signaling promotes apoptosis resistance. PMID:28696156
autocrine IGF2 constitutively activated IGF1R and Akt phosphorylation, which was inhibited by BI 885578 treatment. BI 885578 significantly delayed the growth of IGF2-high colorectal cancer xenograft tumors in mice, while combination with a VEGF-A antibody increased efficacy and induced tumor regression. PMID:28729397
These findings demonstrated that hMSCCMmediated neuroprotection was attributed to IGF1Rmediated signaling, potentiated via the inhibition of IGF2 by IGFBP6. The results of the present study provide insight into the mechanism by which hMSC administration may promote recovery from nerve injury. PMID:29039467
loss of miR-99a in ESCC promoted the tumor cell proliferation, migration, invasion and slug-induced EMT through activating IGF1R signaling pathway. PMID:28800315
current data demonstrate that both INSR and IGF1R are directly targeted by C-myc and exert similar effects to promote the tumorigenesis and metastasis of TSCC through the NF-kappaB pathway. PMID:29518496
WP760 downregulated IGF1R. PMID:28417283
a cross-talk between IGF1R and Wnt/beta-catenin signaling pathways and showed, for the first time, that IGF1R is associated with upregulation of TCF-mediated beta-catenin transcriptional activity. PMID:29621572
MicroRNA-Dependent Regulation of IGF1R Gene Expression in Hormone-Sensitive and Hormone-Resistant Prostate Cancer Cells PMID:29779108
In contrast to preclinical studies that suggest a decrease in trastuzumab sensitivity in IGF1R(+) tumors, our adjuvant data show benefit of adding trastuzumab for patients with either IGF1R(+) and IGF1R(-) breast tumors. PMID:28348046
The findings demonstrate that miR-186 acts as a tumor suppressor by targeting IGF-1R in glioma. PMID:28944896
Forced expression of Klotho resulted in decline of activation of IGF-1R signaling, accompanied by decreased phosphorylation of its downstream targets, including AKT and ERK1/2. These data indicated that Klotho acts as a tumor suppressor via inhibiting IGF-1R signaling, thus suppressing the viability and promoting apoptosis in Tcell lymphoma. PMID:28656297
The study concluded that the expression modulation of tumor suppressors MIR-375 and MIR-145, and oncomiR MIR-224 have the ability to induce apoptosis of colorectal carcinoma cells through regulation of apoptosis mediating genes MTDH, MAP3K1, PDK1, BCL-XL and BAX. PMID:28802228
activation of the IGF-IR/PI3K/Akt signaling system is a common pattern in MLS which appears to be transcriptionally controlled, at least in part by induction of IGF2 gene transcription in a FUS-DDIT3-dependent manner. PMID:28637688
implantation of IGF1R(+) human dental pulp mesenchymal stem cells exerted enhanced neuroplasticity via integrating inputs from both CXCR4 and IGF1R signaling pathways. PMID:27586516
Study findings indicate that the T allele of IGF1R variant rs2016347 is associated with a significant reduction in breast cancer risk in women with a history of preeclampsia, most marked for HR+ breast cancer and in women with age at first birth less than 30. PMID:28822014
Study suggests that IGF-1R-AKT signalling imparts functional heterogeneity in cancer stem cells during acquirement of chemoresistance in ovarian carcinoma. PMID:27819360
IGF1R mRNA expression levels were reversely correlated with miR503 expression levels in breast tumors, suggesting that the upregulation of IGF1R may be due to downregulation of miR503 in breast cancer. PMID:28656281
miR-497 and miR-99a synergistically target IGF1R and mTOR, thereby impeding the HCC tumor growth. These results promote a concept in which not one single miRNA, but rather a network of miRNAs with shared and individual mRNA targets participates in the hepatocarcinogenesis. PMID:28624790
MiR379 acts as a tumor suppressor in NSCLC by directly targeting IGF1R. PMID:28731178
these results indicate that miR455 is involved in gastric cancer progression by directly targeting IGF1R and may serve as a novel therapeutic target for the treatment of gastric cancer. PMID:28714005
Tumor cells in CSF express IGF1R in High Risk, Metastatic Medulloblastoma. PMID:27255663
Insulin-like growth factor 1 receptor, associate of Myc 1, and peroxisome proliferator-activated receptor gamma coactivator 1beta are direct targets of miR-139 PMID:26868851
THADA fusion is a mechanism of IGF2BP3 activation and IGF1R signaling in thyroid cancer. PMID:28193878
In addition to conventional methods, IGF1R CNV can be identified from WES data. FACS analysis of live primary cells is a promising method for efficiently evaluating and screening for IGF1R haploinsufficiency. PMID:28395282
The T IGFR-1 genetic variant and a combination of the C VEGF-A and T IGFR-1 genetic variants increase the risk of developing Primary Open Angle Glaucoma. PMID:28745651
In endocrine-sensitive breast cancer cells, insulin was not growth stimulatory, likely due to the presence of hybrid InsR/IGF1R, which has high affinity for IGF-I, but not insulin. Combination inhibition of InsR and IGF1R showed complete suppression of the system in endocrine-sensitive breast cancer cells PMID:28468775
lower IGF-1R expression after teriparatide was associated with higher body fat, suggesting links between teriparatide resistance, body composition, and the GH/IGF-1 axis. PMID:28218468
Study showed that IGF-1 receptor (IGF-1R), which mediates survival pathways upon IGF binding, was highly expressed in oculomotor neurons and on extraocular muscle endplate. PMID:27180807
the present study confirmed the tumor suppressor function of miR-455 in melanoma, and demonstrated that miR-455 suppressed proliferation and invasion through directly targeting IGF-1R. PMID:28440508
IGF1R signaling under the given experimental conditions and NSCLC genetic background dictates the functional endpoint mechanism for TKI resistance. Manipulating this regulatory role of IGF1R can force the functional endpoint mechanism for TKI resistance in a defined and targetable direction here illustrated by the observed MET-amplification. PMID:28418902
Report complex relationships between individual tumor-specific expression of IGF1R/pIGF1R and InsR/pInsR, response endocrine treatment and breast cancer prognosis. PMID:28030849
These data imply the potential clinical application of EGF-LDP-IGF-AE for esophageal squamous cell carcinoma (ESCC)patients with EGFR and/or IGF-1R overexpression PMID:28498434

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Subcellular Location

Cell membrane; Single-pass type I membrane protein.

Protein Families

Protein kinase superfamily, Tyr protein kinase family, Insulin receptor subfamily

Tissue Specificity

Found as a hybrid receptor with INSR in muscle, heart, kidney, adipose tissue, skeletal muscle, hepatoma, fibroblasts, spleen and placenta (at protein level). Expressed in a variety of tissues. Overexpressed in tumors, including melanomas, cancers of the

Database Links

HGNC: 5465

UNIGENE: Hs.643120

KEGG: hsa:3480

STRING: 9606.ENSP00000268035

OMIM: 147370

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