Retinal photoreceptor cell apoptosis pathway

The retinal photoreceptor cell apoptosis pathway refers to the set of molecular mechanisms driving programmed cell death of photoreceptors in the retina, a major cause of vision loss in retinal degenerative diseases. Key features include both caspase-dependent and caspase-independent processes, involving mitochondria (AIF, cytochrome c), endoplasmic reticulum (caspase-12), calcium-mediated calpain activation, and stress-responsive transcription factors such as c-Fos/AP-1. Disturbances such as genetic mutations, light-induced oxidative stress, or retinal detachment can trigger these processes. Modulation of these pathways represents a therapeutic approach to slow vision loss, but robust, single-target interventions have proven challenging due to pathway complexity and redundancy

Other names

Photoreceptor apoptosis pathwayPhotoreceptor cell death pathwayRetinal apoptosis pathway

Inhibition of caspase activation Inhibition of calpain activity Modulation of intracellular calcium signaling Blockade of apoptotic mediator nuclear translocation (e.g., AIF, caspase-12)