Tumor cell surface receptors and intracellular machinery

Tumor cell surface receptors and intracellular machinery is a broad, collective term referring to the diverse array of proteins and signaling components that drive the initiation, progression, and maintenance of cancer (Hanahan & Weinberg, 2011, Cell). Surface receptors, such as receptor tyrosine kinases (RTKs), act as sensors for extracellular signals, while intracellular machinery, including kinases like PI3K and MAPK, relay these signals to the nucleus to alter gene expression (Lemmon & Schlessinger, 2010, Cell; Sever & Brugge, 2015, Cold Spring Harb Perspect Biol). In malignant cells, these pathways are frequently hijacked through mutations or overexpression, leading to hallmarks of cancer such as sustained proliferative signaling and evasion of growth suppressors (NIH National Cancer Institute). Pharmacological intervention typically involves the use of monoclonal antibodies to block surface receptors or small-molecule inhibitors to disrupt intracellular enzymatic activity (PubChem). Because this term encompasses thousands of distinct biological entities, it is considered a category of targets rather than a single therapeutic target.

Other names

Tumor-associated targetsOncogenic signaling pathwaysCancer cell surface antigensMalignant cellular machinery

Inhibition of oncogenic signaling through receptor blockade or enzymatic activity suppression.