Heat shock protein (HSP) expression in retinal pigment epithelial cell (HSP (in the context of RPE cells, specific isoforms include Hsp27, Hsp70, Hsp90))

"Heat-shock protein expression modulation in RPE cells" refers not to a single molecular target but rather a **cellular process** involving several members of the heat-shock protein family—most notably **HSP27**, **HSP70**, and **HSP90**—within retinal pigment epithelial cells. These chaperone proteins are upregulated under conditions such as oxidative stress or injury. For example, increased expression of **HSP27** correlates with improved viability and altered membrane blebbing after injury; it is hypothesized that this plays a protective role during age-related macular degeneration and other retinal diseases by maintaining cytoskeletal integrity and regulating apoptosis[2][3]. Similarly, **HSP90** helps protect against oxidative damage but can also regulate inflammatory cytokine secretion via pathways like NF-kB; its inhibition suppresses pro-senescent signaling phenotypes in vitro using drugs such as IPI‐504[1]. Small heat-shock proteins also interact with misfolded or partially unfolded client proteins to prevent aggregation—a function critical for neuroprotection—and participate broadly in angiogenesis regulation relevant for neovascular eye diseases[4]. Modulation of these pathways is being explored therapeutically but presents challenges due to their essential roles across many tissues. Note on correctness: The provided target name ("Heat-shock protein expression modulation in RPE cells") describes a biological process rather than an individual molecule/receptor. For structured data purposes, it should be mapped instead to specific targets such as "Heat shock protein 27," "Heat shock 70 kDa protein," or "Heat shock 90 kDa protein" depending on context.

Other names

Heat shock protein modulation in RPEHSP expression in retinal pigment epitheliumStress protein regulation in RPE

Inhibition of ATPase activity of heat shock proteins to modulate cellular stress responses and senescence-associated secretory phenotype