Microglial Transforming Growth Factor-β Signaling in Alzheimer’s Disease

Novel technologies such as single-cell RNA and single-nucleus RNA sequencing have shed new light on the complexity of different microglia populations in physiological and pathological states. The transcriptomic profiling of these populations has led to the subclassification of specific disease-assoc...

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Main Authors: Natascha Vidovic, Björn Spittau
Format: Article
Language:English
Published: MDPI AG 2024-03-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/25/6/3090
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author Natascha Vidovic
Björn Spittau
author_facet Natascha Vidovic
Björn Spittau
author_sort Natascha Vidovic
collection DOAJ
description Novel technologies such as single-cell RNA and single-nucleus RNA sequencing have shed new light on the complexity of different microglia populations in physiological and pathological states. The transcriptomic profiling of these populations has led to the subclassification of specific disease-associated microglia and microglia clusters in neurodegenerative diseases. A common profile includes the downregulation of homeostasis and the upregulation of inflammatory markers. Furthermore, there is concordance in few clusters between murine and human samples. Apolipoprotein E, which has long been considered a high-risk factor for late-onset Alzheimer’s disease, is strongly regulated in both these murine and human clusters. Transforming growth factor-β plays an essential role during the development and maturation of microglia. In a pathological state, it attenuates their activation and is involved in numerous cell regulatory processes. Transforming growth factor-β also has an influence on the deposition of amyloid-beta, as it is involved in the regulation of key proteins and molecules. Taken together, this review highlights the complex interaction of apolipoprotein E, the triggering receptor on myeloid cells 2, and transforming growth factor-β as part of a regulatory axis in microglia at the onset and over the course of Alzheimer’s disease.
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spelling doaj.art-b81e14d2052049089c1bce69c3e03cc72024-03-27T13:45:02ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672024-03-01256309010.3390/ijms25063090Microglial Transforming Growth Factor-β Signaling in Alzheimer’s DiseaseNatascha Vidovic0Björn Spittau1Anatomy and Cell Biology, Medical School OWL, Bielefeld University, 33615 Bielefeld, GermanyAnatomy and Cell Biology, Medical School OWL, Bielefeld University, 33615 Bielefeld, GermanyNovel technologies such as single-cell RNA and single-nucleus RNA sequencing have shed new light on the complexity of different microglia populations in physiological and pathological states. The transcriptomic profiling of these populations has led to the subclassification of specific disease-associated microglia and microglia clusters in neurodegenerative diseases. A common profile includes the downregulation of homeostasis and the upregulation of inflammatory markers. Furthermore, there is concordance in few clusters between murine and human samples. Apolipoprotein E, which has long been considered a high-risk factor for late-onset Alzheimer’s disease, is strongly regulated in both these murine and human clusters. Transforming growth factor-β plays an essential role during the development and maturation of microglia. In a pathological state, it attenuates their activation and is involved in numerous cell regulatory processes. Transforming growth factor-β also has an influence on the deposition of amyloid-beta, as it is involved in the regulation of key proteins and molecules. Taken together, this review highlights the complex interaction of apolipoprotein E, the triggering receptor on myeloid cells 2, and transforming growth factor-β as part of a regulatory axis in microglia at the onset and over the course of Alzheimer’s disease.https://www.mdpi.com/1422-0067/25/6/3090neurodegenerative diseasesAlzheimer’s diseaseamyloid betamicrogliaTGFβhippocampus
spellingShingle Natascha Vidovic
Björn Spittau
Microglial Transforming Growth Factor-β Signaling in Alzheimer’s Disease
International Journal of Molecular Sciences
neurodegenerative diseases
Alzheimer’s disease
amyloid beta
microglia
TGFβ
hippocampus
title Microglial Transforming Growth Factor-β Signaling in Alzheimer’s Disease
title_full Microglial Transforming Growth Factor-β Signaling in Alzheimer’s Disease
title_fullStr Microglial Transforming Growth Factor-β Signaling in Alzheimer’s Disease
title_full_unstemmed Microglial Transforming Growth Factor-β Signaling in Alzheimer’s Disease
title_short Microglial Transforming Growth Factor-β Signaling in Alzheimer’s Disease
title_sort microglial transforming growth factor β signaling in alzheimer s disease
topic neurodegenerative diseases
Alzheimer’s disease
amyloid beta
microglia
TGFβ
hippocampus
url https://www.mdpi.com/1422-0067/25/6/3090
work_keys_str_mv AT nataschavidovic microglialtransforminggrowthfactorbsignalinginalzheimersdisease
AT bjornspittau microglialtransforminggrowthfactorbsignalinginalzheimersdisease