Cancer cell membranes and intracellular organelles

Cancer cell membranes and intracellular organelles, including mitochondria, lysosomes, and the endoplasmic reticulum, represent a broad class of structural targets in oncology. The plasma membrane of malignant cells often exhibits distinct characteristics, such as altered phospholipid symmetry and increased fluidity, which can be exploited by membrane-lytic peptides and certain small molecules (Nature Reviews Cancer, 2016). Intracellular organelles are vital for metabolic reprogramming and survival; for example, mitochondria are central to the intrinsic apoptotic pathway and are frequently targeted by mitocans to disrupt energy production (Frontiers in Oncology, 2020). Many photodynamic therapy (PDT) agents, such as Porfimer sodium, localize to these lipid-rich environments and generate lethal reactive oxygen species (ROS) upon irradiation, causing immediate structural damage and subsequent cell death (CA: A Cancer Journal for Clinicians, 2011). While these targets allow for broad-spectrum activity that may overcome single-protein resistance, the primary challenge lies in achieving sufficient selectivity to avoid damaging the membranes of healthy host cells (Journal of Controlled Release, 2021). Consequently, this entry is considered incorrect as a single molecular target because it encompasses a vast array of distinct biological structures rather than a specific protein or receptor.

Other names

Tumor cell membranesSubcellular organellesNeoplastic membranesCancer cell lipid bilayerMalignant organelles

Induction of membrane permeabilization, generation of reactive oxygen species (ROS) leading to lipid peroxidation, disruption of mitochondrial membrane potential, and triggering of immunogenic cell death (ICD).