Enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in Alzheimer disease
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by progressive neuronal cell loss. Recently, dysregulation of intracellular Ca(2+) homeostasis has been suggested as a common proximal cause of neural dysfunction in AD. Here, we investigated (1) the pathogenic role of destabiliz...
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ftpubmed:oai:pubmedcentral.nih.gov:8012710 2023-05-15T15:06:31+02:00 Enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in Alzheimer disease Nakamura, Yoshihide Yamamoto, Takeshi Xu, Xiaojuan Kobayashi, Shigeki Tanaka, Shinji Tamitani, Masaki Saito, Takashi Saido, Takaomi C. Yano, Masafumi 2021-03-31 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8012710/ http://www.ncbi.nlm.nih.gov/pubmed/33790404 https://doi.org/10.1038/s41598-021-86822-x en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8012710/ http://www.ncbi.nlm.nih.gov/pubmed/33790404 http://dx.doi.org/10.1038/s41598-021-86822-x © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2021 ftpubmed https://doi.org/10.1038/s41598-021-86822-x 2021-04-11T00:27:02Z Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by progressive neuronal cell loss. Recently, dysregulation of intracellular Ca(2+) homeostasis has been suggested as a common proximal cause of neural dysfunction in AD. Here, we investigated (1) the pathogenic role of destabilization of ryanodine receptor (RyR2) in endoplasmic reticulum (ER) upon development of AD phenotypes in App(NL-G-F) mice, which harbor three familial AD mutations (Swedish, Beyreuther/Iberian, and Arctic), and (2) the therapeutic effect of enhanced calmodulin (CaM) binding to RyR2. In the neuronal cells from App(NL-G-F) mice, CaM dissociation from RyR2 was associated with AD-related phenotypes, i.e. Aβ accumulation, TAU phosphorylation, ER stress, neuronal cell loss, and cognitive dysfunction. Surprisingly, either genetic (by V3599K substitution in RyR2) or pharmacological (by dantrolene) enhancement of CaM binding to RyR2 reversed almost completely the aforementioned AD-related phenotypes, except for Aβ accumulation. Thus, destabilization of RyR2 due to CaM dissociation is most likely an early and fundamental pathogenic mechanism involved in the development of AD. The discovery that neuronal cell loss can be fully prevented simply by stabilizing RyR2 sheds new light on the treatment of AD. Text Arctic PubMed Central (PMC) Arctic Scientific Reports 11 1 |
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Article Nakamura, Yoshihide Yamamoto, Takeshi Xu, Xiaojuan Kobayashi, Shigeki Tanaka, Shinji Tamitani, Masaki Saito, Takashi Saido, Takaomi C. Yano, Masafumi Enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in Alzheimer disease |
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Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by progressive neuronal cell loss. Recently, dysregulation of intracellular Ca(2+) homeostasis has been suggested as a common proximal cause of neural dysfunction in AD. Here, we investigated (1) the pathogenic role of destabilization of ryanodine receptor (RyR2) in endoplasmic reticulum (ER) upon development of AD phenotypes in App(NL-G-F) mice, which harbor three familial AD mutations (Swedish, Beyreuther/Iberian, and Arctic), and (2) the therapeutic effect of enhanced calmodulin (CaM) binding to RyR2. In the neuronal cells from App(NL-G-F) mice, CaM dissociation from RyR2 was associated with AD-related phenotypes, i.e. Aβ accumulation, TAU phosphorylation, ER stress, neuronal cell loss, and cognitive dysfunction. Surprisingly, either genetic (by V3599K substitution in RyR2) or pharmacological (by dantrolene) enhancement of CaM binding to RyR2 reversed almost completely the aforementioned AD-related phenotypes, except for Aβ accumulation. Thus, destabilization of RyR2 due to CaM dissociation is most likely an early and fundamental pathogenic mechanism involved in the development of AD. The discovery that neuronal cell loss can be fully prevented simply by stabilizing RyR2 sheds new light on the treatment of AD. |
format |
Text |
author |
Nakamura, Yoshihide Yamamoto, Takeshi Xu, Xiaojuan Kobayashi, Shigeki Tanaka, Shinji Tamitani, Masaki Saito, Takashi Saido, Takaomi C. Yano, Masafumi |
author_facet |
Nakamura, Yoshihide Yamamoto, Takeshi Xu, Xiaojuan Kobayashi, Shigeki Tanaka, Shinji Tamitani, Masaki Saito, Takashi Saido, Takaomi C. Yano, Masafumi |
author_sort |
Nakamura, Yoshihide |
title |
Enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in Alzheimer disease |
title_short |
Enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in Alzheimer disease |
title_full |
Enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in Alzheimer disease |
title_fullStr |
Enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in Alzheimer disease |
title_full_unstemmed |
Enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in Alzheimer disease |
title_sort |
enhancing calmodulin binding to ryanodine receptor is crucial to limit neuronal cell loss in alzheimer disease |
publisher |
Nature Publishing Group UK |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8012710/ http://www.ncbi.nlm.nih.gov/pubmed/33790404 https://doi.org/10.1038/s41598-021-86822-x |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8012710/ http://www.ncbi.nlm.nih.gov/pubmed/33790404 http://dx.doi.org/10.1038/s41598-021-86822-x |
op_rights |
© The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
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https://doi.org/10.1038/s41598-021-86822-x |
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