PMID- 22261744 OWN - NLM STAT- MEDLINE DCOM- 20120817 LR - 20211203 IS - 1420-9071 (Electronic) IS - 1420-682X (Linking) VI - 69 IP - 12 DP - 2012 Jun TI - Neuronal ceroid lipofuscinosis protein CLN3 interacts with motor proteins and modifies location of late endosomal compartments. PG - 2075-89 LID - 10.1007/s00018-011-0913-1 [doi] AB - CLN3 is an endosomal/lysosomal transmembrane protein mutated in classical juvenile onset neuronal ceroid lipofuscinosis, a fatal inherited neurodegenerative lysosomal storage disorder. The function of CLN3 in endosomal/lysosomal events has remained elusive due to poor understanding of its interactions in these compartments. It has previously been shown that the localisation of late endosomal/lysosomal compartments is disturbed in cells expressing the most common disease-associated CLN3 mutant, CLN3∆ex7-8 (c.462-677del). We report here that a protracted disease causing mutant, CLN3E295K, affects the properties of late endocytic compartments, since over-expression of the CLN3E295K mutant protein in HeLa cells induced relocalisation of Rab7 and a perinuclear clustering of late endosomes/lysosomes. In addition to the previously reported disturbances in the endocytic pathway, we now show that the anterograde transport of late endosomal/lysosomal compartments is affected in CLN3 deficiency. CLN3 interacted with motor components driving both plus and minus end microtubular trafficking: tubulin, dynactin, dynein and kinesin-2. Most importantly, CLN3 was found to interact directly with active, guanosine-5'-triphosphate (GTP)-bound Rab7 and with the Rab7-interacting lysosomal protein (RILP) that anchors the dynein motor. The data presented in this study provide novel insights into the role of CLN3 in late endosomal/lysosomal membrane transport. FAU - Uusi-Rauva, Kristiina AU - Uusi-Rauva K AD - National Institute for Health and Welfare and FIMM, Institute for Molecular Medicine Finland, Biomedicum Helsinki, Finland. FAU - Kyttala, Aija AU - Kyttala A FAU - van der Kant, Rik AU - van der Kant R FAU - Vesa, Jouni AU - Vesa J FAU - Tanhuanpaa, Kimmo AU - Tanhuanpaa K FAU - Neefjes, Jacques AU - Neefjes J FAU - Olkkonen, Vesa M AU - Olkkonen VM FAU - Jalanko, Anu AU - Jalanko A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120120 PL - Switzerland TA - Cell Mol Life Sci JT - Cellular and molecular life sciences : CMLS JID - 9705402 RN - 0 (CLN3 protein, human) RN - 0 (Membrane Glycoproteins) RN - 0 (Molecular Chaperones) RN - 0 (Molecular Motor Proteins) RN - 0 (rab7 GTP-Binding Proteins) RN - 0 (rab7 GTP-binding proteins, human) RN - EC 3.6.5.2 (rab GTP-Binding Proteins) SB - IM MH - Endosomes/*metabolism MH - HeLa Cells MH - Humans MH - Lysosomes/metabolism MH - Membrane Glycoproteins/genetics/*metabolism MH - Molecular Chaperones/genetics/*metabolism MH - Molecular Motor Proteins/*metabolism MH - Mutation MH - Neuronal Ceroid-Lipofuscinoses/*metabolism MH - rab GTP-Binding Proteins/metabolism MH - rab7 GTP-Binding Proteins EDAT- 2012/01/21 06:00 MHDA- 2012/08/18 06:00 CRDT- 2012/01/21 06:00 PHST- 2011/06/29 00:00 [received] PHST- 2011/12/29 00:00 [accepted] PHST- 2011/12/08 00:00 [revised] PHST- 2012/01/21 06:00 [entrez] PHST- 2012/01/21 06:00 [pubmed] PHST- 2012/08/18 06:00 [medline] AID - 10.1007/s00018-011-0913-1 [doi] PST - ppublish SO - Cell Mol Life Sci. 2012 Jun;69(12):2075-89. doi: 10.1007/s00018-011-0913-1. Epub 2012 Jan 20.