Cancer cell apoptosis via cytotoxic lymphocyte activity

Cancer cell apoptosis via cytotoxic lymphocyte activity" refers to the **process** by which specialized immune cells—primarily **cytotoxic T lymphocytes** (CTLs) and **natural killer** (NK) cells—recognize and eliminate cancerous cells through induction of programmed cell death (*apoptosis*)[1][2][4]. These effector cells use two main mechanisms: - **Granule exocytosis pathway:** Release of perforin forms pores in the target cancer cell membrane, allowing granzymes to enter and activate apoptotic pathways. - **Death ligand pathway:** Expression of ligands such as Fas ligand or TNF-related molecules on the surface of CTLs/NK cells binds corresponding receptors on tumor cells, triggering intracellular apoptotic signaling cascades[2][5]. This mechanism is central both for natural anti-tumor immunity and for many immunotherapeutic strategies. However, "cancer cell apoptosis via cytotoxic lymphocyte activity" is not itself a discrete molecular entity but rather describes an important immunological phenomenon involving multiple proteins and cellular interactions[1][2][3].

Other names

Cytotoxic lymphocyte-mediated cancer cell apoptosisCTL/NK-induced tumor cell deathImmune-mediated tumor cell killing