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Autophagic flux is impaired in the brain tissue of Tay-Sachs disease mouse model
Tay-Sachs disease is a lethal lysosomal storage disorder caused by mutations in the HexA gene encoding the α subunit of the lysosomal β-hexosaminidase enzyme (HEXA). Abnormal GM2 ganglioside accumulation causes progressive deterioration in the central nervous system in Tay-Sachs patients. Hexa-/- mo...
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Published in: | PloS one 2023-03, Vol.18 (3), p.e0280650-e0280650 |
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description | Tay-Sachs disease is a lethal lysosomal storage disorder caused by mutations in the HexA gene encoding the α subunit of the lysosomal β-hexosaminidase enzyme (HEXA). Abnormal GM2 ganglioside accumulation causes progressive deterioration in the central nervous system in Tay-Sachs patients. Hexa-/- mouse model failed to display abnormal phenotype. Recently, our group generated Hexa-/-Neu3-/- mouse showed severe neuropathological indications similar to Tay-Sachs patients. Despite excessive GM2 ganglioside accumulation in the brain and visceral organs, the regulation of autophagy has not been clarified yet in the Tay-Sachs disease mouse model. Therefore, we investigated distinct steps of autophagic flux using markers including LC3 and p62 in four different brain regions from the Hexa-/-Neu3-/- mice model of Tay-Sachs disease. Our data revealed accumulated autophagosomes and autophagolysosomes indicating impairment in autophagic flux in the brain. We suggest that autophagy might be a new therapeutic target for the treatment of devastating Tay-Sachs disease. |
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Abnormal GM2 ganglioside accumulation causes progressive deterioration in the central nervous system in Tay-Sachs patients. Hexa-/- mouse model failed to display abnormal phenotype. Recently, our group generated Hexa-/-Neu3-/- mouse showed severe neuropathological indications similar to Tay-Sachs patients. Despite excessive GM2 ganglioside accumulation in the brain and visceral organs, the regulation of autophagy has not been clarified yet in the Tay-Sachs disease mouse model. Therefore, we investigated distinct steps of autophagic flux using markers including LC3 and p62 in four different brain regions from the Hexa-/-Neu3-/- mice model of Tay-Sachs disease. Our data revealed accumulated autophagosomes and autophagolysosomes indicating impairment in autophagic flux in the brain. We suggest that autophagy might be a new therapeutic target for the treatment of devastating Tay-Sachs disease.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0280650</identifier><identifier>PMID: 36928510</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Accumulation ; Analysis ; Animal tissues ; Animals ; Antibodies ; Autophagy ; Autophagy (Cytology) ; Autophagy - physiology ; beta-N-Acetylhexosaminidases - genetics ; beta-N-Acetylhexosaminidases - metabolism ; Biology and Life Sciences ; Brain ; Brain - metabolism ; Brain - pathology ; Care and treatment ; Cell death ; Central nervous system ; Diagnosis ; Disease ; Disease Models, Animal ; Fluctuations ; G(M2) Ganglioside - therapeutic use ; Ganglioside GM2 ; Gangliosides ; Gene mutations ; Genes ; Genetic aspects ; Health aspects ; Hexosaminidase A - metabolism ; Homeostasis ; Medicine and Health Sciences ; Membranes ; Mice ; Modelling ; Mutation ; Neurodegeneration ; Neurological diseases ; Pathology ; Phagocytosis ; Phagosomes ; Phenotypes ; Proteins ; Research and Analysis Methods ; Tay-Sachs disease ; Tay-Sachs Disease - metabolism ; Tay-Sachs Disease - pathology ; Therapeutic targets</subject><ispartof>PloS one, 2023-03, Vol.18 (3), p.e0280650-e0280650</ispartof><rights>Copyright: © 2023 Sengul et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</rights><rights>COPYRIGHT 2023 Public Library of Science</rights><rights>2023 Sengul et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2023 Sengul et al 2023 Sengul et al</rights><rights>2023 Sengul et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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Abnormal GM2 ganglioside accumulation causes progressive deterioration in the central nervous system in Tay-Sachs patients. Hexa-/- mouse model failed to display abnormal phenotype. Recently, our group generated Hexa-/-Neu3-/- mouse showed severe neuropathological indications similar to Tay-Sachs patients. Despite excessive GM2 ganglioside accumulation in the brain and visceral organs, the regulation of autophagy has not been clarified yet in the Tay-Sachs disease mouse model. Therefore, we investigated distinct steps of autophagic flux using markers including LC3 and p62 in four different brain regions from the Hexa-/-Neu3-/- mice model of Tay-Sachs disease. Our data revealed accumulated autophagosomes and autophagolysosomes indicating impairment in autophagic flux in the brain. We suggest that autophagy might be a new therapeutic target for the treatment of devastating Tay-Sachs disease.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>36928510</pmid><doi>10.1371/journal.pone.0280650</doi><tpages>e0280650</tpages><orcidid>https://orcid.org/0000-0002-0243-5011</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Accumulation Analysis Animal tissues Animals Antibodies Autophagy Autophagy (Cytology) Autophagy - physiology beta-N-Acetylhexosaminidases - genetics beta-N-Acetylhexosaminidases - metabolism Biology and Life Sciences Brain Brain - metabolism Brain - pathology Care and treatment Cell death Central nervous system Diagnosis Disease Disease Models, Animal Fluctuations G(M2) Ganglioside - therapeutic use Ganglioside GM2 Gangliosides Gene mutations Genes Genetic aspects Health aspects Hexosaminidase A - metabolism Homeostasis Medicine and Health Sciences Membranes Mice Modelling Mutation Neurodegeneration Neurological diseases Pathology Phagocytosis Phagosomes Phenotypes Proteins Research and Analysis Methods Tay-Sachs disease Tay-Sachs Disease - metabolism Tay-Sachs Disease - pathology Therapeutic targets |
title | Autophagic flux is impaired in the brain tissue of Tay-Sachs disease mouse model |
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