EGFR Antibody - Epidermal Growth Factor Receptor Antibodies

Introduction

EGFR Antibody products are widely used to study Epidermal Growth Factor Receptor (EGFR), also known as ERBB1 or HER1, a transmembrane receptor tyrosine kinase central to epithelial cell signaling and tumor biology. EGFR plays a key role in regulating proliferation, differentiation, and survival, making it one of the most extensively studied targets in cancer research.

EGFR Biology and Research Relevance

EGFR is activated through ligand binding, leading to receptor dimerization and downstream signaling through pathways such as MAPK, PI3K-AKT, and JAK-STAT. Dysregulation of EGFR signaling is strongly associated with tumor progression, therapeutic resistance, and poor clinical outcomes across multiple cancer types, including lung, colorectal, and head and neck cancers.

Because of its importance, EGFR antibody reagents are frequently used to evaluate:

• receptor expression levels
• membrane localization in tumor tissues
• downstream signaling activity
• response to targeted therapies

EGFR Antibody Applications

EGFR antibodies are commonly used in multiple research applications depending on experimental needs:

• Immunohistochemistry (IHC): Detection of membranous EGFR expression in tumor tissues, including tissue microarrays (TMA)
• Western Blot (WB): Identification of total or modified EGFR protein
• Immunofluorescence (IF): Visualization of receptor localization and trafficking
• Flow Cytometry (FACS): Analysis of EGFR expression at the cellular level

Different antibody clones and formats may be optimized for specific applications, allowing flexibility in experimental design.

EGFR in Cancer and Tumor Microenvironment

EGFR is frequently overexpressed or mutated in cancer, contributing to increased proliferation, invasion, and resistance to apoptosis. Its strong membranous staining pattern in epithelial tumors makes it a widely used marker in immunohistochemical analysis. In addition to tumor cells, EGFR signaling influences interactions within the tumor microenvironment, including stromal and immune cell responses.

Choosing an EGFR Antibody

When selecting an EGFR antibody, researchers often consider:

• application compatibility (IHC, WB, IF, FACS)
• clone validation and publication history
• specificity validation such as protein microarray or HuProt analysis
• epitope recognition and species reactivity

Well-characterized clones, such as those with extensive publication support or microarray validation, provide increased confidence in experimental results.

Explore EGFR Antibody Products

A selection of EGFR antibody products is shown below. These include monoclonal and polyclonal antibodies validated for a range of research applications.

These antibodies are part of a broader antibody panel offered by NSJ Bioreagents.