Susceptible tumor cells

Susceptible tumor cells refer to a subpopulation of neoplastic cells that lack intrinsic or acquired resistance mechanisms against a specific therapeutic agent. These cells are characterized by their reliance on the biological pathways or molecular structures that the drug is designed to inhibit, such as specific oncogenic kinases or DNA repair mechanisms (NCI Dictionary of Cancer Terms). In clinical practice, the susceptibility of these cells determines the initial efficacy of a treatment regimen, often measured by tumor shrinkage or a decrease in tumor markers. However, the presence of susceptible cells is frequently accompanied by a minority of resistant clones, which can lead to treatment failure through the process of clonal evolution (Greaves & Maley, Nature 2012). Identifying the specific vulnerabilities of these cells is a cornerstone of precision oncology, allowing for the selection of therapies tailored to the genetic profile of the patient's tumor. Consequently, while susceptible tumor cells is a descriptive term for a cell population rather than a single molecular target, it is a fundamental concept in evaluating drug efficacy and the potential for disease progression.

Other names

Sensitive tumor cellsDrug-sensitive cancer cellsResponder cell population

Susceptible tumor cells are eradicated by therapies that exploit specific molecular vulnerabilities, leading to cell cycle arrest, induction of apoptosis, or immune-mediated destruction.