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| Home > Publications Database > Neuropathy-associated Tecpr2 mutation knock-in mice reveal endolysosomal loss of function phenotypes in neurons and microglia. > print |
| Home > Publications Database > Neuropathy-associated Tecpr2 mutation knock-in mice reveal endolysosomal loss of function phenotypes in neurons and microglia. > print |
| 001 | 281843 | ||
| 005 | 20251118102957.0 | ||
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| 100 | 1 | _ | |a Bhattacharya, Debjani |0 P:(DE-2719)9003127 |b 0 |u dzne |
| 245 | _ | _ | |a Neuropathy-associated Tecpr2 mutation knock-in mice reveal endolysosomal loss of function phenotypes in neurons and microglia. |
| 260 | _ | _ | |a London [u.a.] |c 2025 |b Nature Publishing Group |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a Mutations in the gene encoding Tectonic β-propeller repeat-containing repeat protein 2 (TECPR2) cause hereditary sensory and autonomic neuropathy subtype 9 (HSAN9) which is a fatal neurodevelopmental and neurodegenerative disorder involving the sensory and peripheral nervous system. TECPR2 is ubiquitously expressed and linked to trafficking and sorting within the cell, however, its functional role remains poorly defined. Moreover, molecular insights into pathogenic mechanisms underlying HSAN9 are lacking. Here, we report a novel mouse model which harbors a HSAN9-associated nonsense mutation that causes loss of TECPR2 expression. Mice show altered gait, highly region-specific axonal dystrophy, and extensive local gliosis. The affected medulla area prominently features swollen axons filled with amorphous protein aggregates, glycogen granules, single and double membrane vesicles as well as aberrant organelles including ER and mitochondria whose proteome is distinctly altered. Despite the locally restricted pathology the neuronal demise is detectable in the cerebrospinal fluid and responded to by damage-associated microglia. However, their capacity to clear neuronal debris seems attenuated. Overall, neuronal and microglia phenotypes point to a dysfunctional endolysosomal system when TECPR2 is missing. This was confirmed in TECPR2 knockout cells and linked to TECPR2's interaction with the homotypic fusion and protein sorting (HOPS)-tethering complex. Collectively, we uncovered a role of TECPR2 in endolysosome maintenance which seems relevant for healthy neurons in a particular brain region. |
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| 650 | _ | 7 | |a Nerve Tissue Proteins |2 NLM Chemicals |
| 650 | _ | 2 | |a Animals |2 MeSH |
| 650 | _ | 2 | |a Microglia: metabolism |2 MeSH |
| 650 | _ | 2 | |a Microglia: pathology |2 MeSH |
| 650 | _ | 2 | |a Neurons: metabolism |2 MeSH |
| 650 | _ | 2 | |a Neurons: pathology |2 MeSH |
| 650 | _ | 2 | |a Mice |2 MeSH |
| 650 | _ | 2 | |a Phenotype |2 MeSH |
| 650 | _ | 2 | |a Lysosomes: metabolism |2 MeSH |
| 650 | _ | 2 | |a Gene Knock-In Techniques |2 MeSH |
| 650 | _ | 2 | |a Endosomes: metabolism |2 MeSH |
| 650 | _ | 2 | |a Nerve Tissue Proteins: genetics |2 MeSH |
| 650 | _ | 2 | |a Nerve Tissue Proteins: metabolism |2 MeSH |
| 650 | _ | 2 | |a Disease Models, Animal |2 MeSH |
| 650 | _ | 2 | |a Mutation: genetics |2 MeSH |
| 700 | 1 | _ | |a da Silva-Buttkus, Patricia |b 1 |
| 700 | 1 | _ | |a Nalbach, Karsten |0 P:(DE-2719)9002811 |b 2 |
| 700 | 1 | _ | |a Cheng, Lizhen |0 P:(DE-2719)9003128 |b 3 |u dzne |
| 700 | 1 | _ | |a Garrett, Lillian |b 4 |
| 700 | 1 | _ | |a Irmler, Martin |b 5 |
| 700 | 1 | _ | |a Kislinger, Georg |0 P:(DE-2719)9000614 |b 6 |u dzne |
| 700 | 1 | _ | |a Werner, Georg |0 P:(DE-2719)9003459 |b 7 |u dzne |
| 700 | 1 | _ | |a Rodde, Ramona |b 8 |
| 700 | 1 | _ | |a Lengger, Christoph |0 0000-0002-2207-4153 |b 9 |
| 700 | 1 | _ | |a Beckers, Johannes |b 10 |
| 700 | 1 | _ | |a Zimprich, Annemarie |b 11 |
| 700 | 1 | _ | |a Hölter, Sabine M |0 0000-0003-4878-5241 |b 12 |
| 700 | 1 | _ | |a Gailus-Durner, Valerie |b 13 |
| 700 | 1 | _ | |a Fuchs, Helmut |b 14 |
| 700 | 1 | _ | |a Hrabe de Angelis, Martin |0 P:(DE-2719)9000920 |b 15 |
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| 700 | 1 | _ | |a Brill, Monika S |0 P:(DE-2719)9000978 |b 18 |
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| 700 | 1 | _ | |a Lichtenthaler, Stefan F |0 P:(DE-2719)2181459 |b 20 |u dzne |
| 700 | 1 | _ | |a Behrends, Christian |0 0000-0002-9184-7607 |b 21 |
| 773 | _ | _ | |a 10.1038/s41419-025-08168-w |g Vol. 16, no. 1, p. 775 |0 PERI:(DE-600)2541626-1 |n 1 |p 775 |t Cell death & disease |v 16 |y 2025 |x 2041-4889 |
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