Malignant or Infected Host Cells

Malignant or Infected Host Cells refers to a broad category of pathological cell states rather than a specific molecular target like a receptor or enzyme. Malignant cells are characterized by the hallmarks of cancer, including sustained proliferative signaling, evasion of growth suppressors, and the ability to invade and metastasize, often driven by somatic mutations (Hanahan & Weinberg, 2011, Cell). Infected host cells are those that have been compromised by pathogens such as viruses or intracellular bacteria, which utilize the host's metabolic and replicative machinery to propagate the infection (Alberts et al., 2002, Molecular Biology of the Cell). In a therapeutic context, these cells are the intended destination for drugs, but the actual molecular targets are specific proteins or nucleic acids within or on these cells, such as the BCR-ABL kinase in leukemia or viral proteases in HIV (Vanneman & Dranoff, 2012, Nat Rev Cancer). Effective treatment strategies aim to achieve selective toxicity, identifying unique biomarkers or vulnerabilities that distinguish these pathological cells from healthy host tissue to minimize adverse effects.

Other names

Cancer cellsTumor cellsVirally infected cellsPathogen-harboring cellsTransformed cellsHost cells

Targeted elimination via induction of apoptosis, antibody-dependent cellular cytotoxicity (ADCC), inhibition of intracellular replication, or disruption of oncogenic signaling pathways.