Journal: Frontiers in Aging
Article Title: Risk genes in progressive supranuclear palsy (PSP) affect integrity and function of microtubules
doi: 10.3389/fragi.2026.1769377
Figure Lengend Snippet: This diagram integrates genes that maintain cytoskeletal architecture, vesicle sorting, autophagy-lysosomal function, and protein quality control. MAPT regulates microtubule accessibility for transport motors. PLEKHM1 links Rab7-positive autophagosomes to dynein and the HOPS complex, enabling autophagosome–lysosome fusion. STX6 mediates endosome–Golgi trafficking and participates in tau secretion. APOE influences endosomal recycling and lysosomal degradation. EIF2AK3 (PERK) mediates the unfolded protein response (UPR), limiting ER stress and reducing misfolded protein accumulation. TRIM11 , an E3 ligase, promotes clearance of misfolded tau through ubiquitin-proteasomal pathways. MOBP , CNTN2/NFASC , and KANSL1 support cytoskeleton integrity, affecting vesicle trafficking. SLCO1A2 and C4A play peripheral modulatory roles in membrane transport and complement signaling.
Article Snippet: EIF2AK3 (PERK) , ER stress and proteostasis regulation , PERK modulates protein synthesis affecting axonal maintenance and MT-associated proteins , UPR activation alters tubulin/MAP synthesis and axonal protein supply; chronic PERK activation linked to MN degeneration , .
Techniques: Control, Ubiquitin Proteomics, Membrane