EGFR Antibody (RM294)

Images

 
Western Blot: EGFR Antibody (RM294) [NBP2-61572] - Western Blot of HeLa cell lysates using NBP2-61572.
Immunohistochemistry-Paraffin: EGFR Antibody (RM294) [NBP2-61572] - Immunohistochemical staining of formalin fixed and paraffin embedded human breast cancer tissue sections using NBP2-61572.

Product Details

Summary
Reactivity HuSpecies Glossary
Applications WB, IHC, IHC-P
Clone
RM294
Clonality
Monoclonal
Host
Rabbit
Conjugate
Unconjugated

Order Details

EGFR Antibody (RM294) Summary

Additional Information
Recombinant Monoclonal Antibody.
Immunogen
A peptide corresponding to the C-terminus of Human EGFR
Specificity
This antibody reacts to human EGFR (c-ErbB-1). No cross reactivity with HER2, HER3, or HER4
Isotype
IgG
Clonality
Monoclonal
Host
Rabbit
Gene
EGFR
Purity
Protein A purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.

Applications/Dilutions

Dilutions
  • Immunohistochemistry 1:100-1:200
  • Immunohistochemistry-Paraffin
  • Western Blot

Packaging, Storage & Formulations

Storage
Store at -20C. Avoid freeze-thaw cycles.
Buffer
50% Glycerol/PBS with 1% BSA
Preservative
0.09% Sodium Azide
Purity
Protein A purified

Alternate Names for EGFR Antibody (RM294)

  • avian erythroblastic leukemia viral (v-erb-b) oncogene homolog
  • cell growth inhibiting protein 40
  • cell proliferation-inducing protein 61
  • EC 2.7.10
  • EC 2.7.10.1
  • EGF R
  • EGFR
  • epidermal growth factor receptor (avian erythroblastic leukemia viral (v-erb-b)oncogene homolog)
  • epidermal growth factor receptor
  • ErbB
  • ErbB1
  • ERBB1PIG61
  • HER1
  • HER-1
  • mENA
  • Proto-oncogene c-ErbB-1
  • Receptor tyrosine-protein kinase erbB-1

Background

Epidermal growth factor receptor (EGFR), also known as ErbB1 and HER1, is a type I glycoprotein that belongs the ErbB subfamily of receptor tyrosine kinases (RTKs), which includes ErbB2/HER2, ErbB3/HER3, and ErbB4/HER4 (1,2). EGFR plays an important role in epithelial cell development and homeostasis and as a driver of tumorigenesis in cancer (1,2). The human EGFR is protein 1210 amino acids (aa) in length with a theoretical molecular weight (MW) of 134 kDa (1). The protein consists of a short signal peptide, an extracellular domain (ECD) divided into four subdomains (I-IV), a transmembrane region, an intracellular juxtamembrane segment, a tyrosine kinase domain, and C-terminal tail (1-3). Within the ECD, human EGFR has 88-90% aa sequence identity with mouse and rat EGFR. EGFR has four known specific ligands: EGF, amphiregulin, epigen, and transforming growth factor alpha (TGF-alpha). EGFR ligands betacellulin, epiregulin, and herapin binding (HB)-EGF have dual specificity with ErbB4 (1,3). Ligand binding to the extracellular domain of EFGR leads to receptor homodimerization, or heterodimerization with other ErbB family members, and EGFR activation. This results in subsequent phosphorylation and activation of intracellular signaling pathways, such as MAPK and PI3K/Akt (2,3). EGFR signaling is essential for many cellular processes including proliferation, differentiation, migration, and apoptosis (1,3,5).

In addition to its role in normal development, EGFR mutations or overexpression is observed in many tumors, including breast cancer, non-small cell lung carcinoma (NSCLC), colon cancer, and more (3-6). Small molecule tyrosine kinase inhibitors (TKIs), like gefitinib, erlotinib, and afatinib, have shown great efficacy in treating patients with EGFR activating mutations, especially for NSCLC (4-6). However, most patients eventually develop acquired resistance to TKIs and thus combination and alternative therapies are in development (4-6). A third-generation TKI, osimertinib, is approved for NSCLC patients with resistance to first-line EGFR TKI treatment (6). Additionally, combination therapies of EGFR TKIs with monoclonal antibody immunotherapies, like anti-PD-L1, are being further investigated in clinical trials (6).

References

1. Roskoski R Jr. Small molecule inhibitors targeting the EGFR/ErbB family of protein-tyrosine kinases in human cancers. Pharmacol Res. 2019; 139:395-411. https://doi.org/10.1016/j.phrs.2018.11.014

2. Sigismund S, Avanzato D, Lanzetti L. Emerging functions of the EGFR in cancer. Mol Oncol. 2018; 12(1):3-20. https://doi.org/10.1002/1878-0261.12155

3. Normanno N, De Luca A, Bianco C, et al. Epidermal growth factor receptor (EGFR) signaling in cancer. Gene. 2006; 366(1):2-16. https://doi.org/10.1016/j.gene.2005.10.018

4. Liu Q, Yu S, Zhao W, Qin S, Chu Q, Wu K. EGFR-TKIs resistance via EGFR-independent signaling pathways. Mol Cancer. 2018; 17(1):53. https://doi.org/10.1186/s12943-018-0793-1

5. Harrison PT, Vyse S, Huang PH. Rare epidermal growth factor receptor (EGFR) mutations in non-small cell lung cancer. Semin Cancer Biol. 2020; 61:167-179. https://doi.org/10.1016/j.semcancer.2019.09.015

6. Wu SG, Shih JY. Management of acquired resistance to EGFR TKI-targeted therapy in advanced non-small cell lung cancer. Mol Cancer. 2018; 17(1):38. https://doi.org/10.1186/s12943-018-0777-1

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Product General Protocols

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Video Protocols

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Secondary Antibodies

 

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Bioinformatics

Gene Symbol EGFR