Ceroid-lipofuscinosis neuronal protein 3 (CLN3)

The CLN3 gene encodes ceroid-lipofuscinosis neuronal protein 3, also known as battenin, a transmembrane protein primarily localized in lysosomal membranes. It is necessary for normal lysosomal function, recycling of cellular components (autophagy), and possibly acts as an atypical solute transporter, structurally related to the major facilitator superfamily. Mutations in CLN3 cause a neurodegenerative disorder known as CLN3 disease (juvenile neuronal ceroid lipofuscinosis or Batten disease), a severe autosomal recessive disorder with onset in childhood, characterized by progressive vision loss, cognitive decline, movement abnormalities, seizures, and early death. While the exact molecular function remains incompletely characterized, CLN3 is critical for neuronal health and endolysosomal balance, and its loss results in accumulation of autofluorescent storage material and neuronal cell death

Other names

BatteninBTSJNCL proteinJuvenile Neuronal Ceroid Lipofuscinosis proteinCLN3-related neuronal ceroid lipofuscinosisBatten disease proteinSpielmeyer-Sjogren-Vogt disease proteinjuvenile Batten disease protein

Not established for specific drugs targeting CLN3; mechanistic research ongoing. Candidate mechanisms targeted in experimental therapy include anti-aggregation strategies, lysosomal modulation, and gene therapy