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Human tau mutations in cerebral organoids induce a progressive dyshomeostasis of cholesterol
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Increased cholesterol levels are present in tandem with neuronal dysfunction and tau aggregation in several experimental models.
“Using several experimental models, it has been shown that increased cholesterol levels are present in tandem with neuronal dysfunction and tau aggregation4,5,18–25.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [4]
Time points for scRNA-seq were selected based on previous literature suggesting these are time points at which changes in organoid maturation can be observed.
“Time points were selected based on previous literature that utilizes neural organoids for immunostaining and transcriptomic analysis4,5,47, suggesting these are time points at which changes in organoid maturation can be observed.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [4]
HNOs generated from hiPSCs of patients with MAPT mutations provide a complex in vitro model that exhibits transcriptional changes relevant to neurodegeneration.
“Human neural organoids (HNOs) generated from human induced pluripotent stem cells (hiPSCs) of patients with MAPT mutations provide a complex in vitro model which also exhibits transcriptional changes that are relevant to neurodegeneration4,5.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [4]
Our findings of altered lipid profiles and increased tau phosphorylation in HNOs with MAPT mutations coincide with findings from previously published literature using HNO models to study MAPT gene mutations.
“Importantly, our findings of altered lipid profiles and increased tau phosphorylation in HNOs with MAPT mutations coincide with findings from previously published literature using HNO models to study MAPT gene mutations4,5.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [4]
No further investigation into the functional activity of HNOs, autophagy function, lipid droplet accumulation, or mechanism of tau phosphorylation was performed in that study.
“However, no further investigation into the functional activity of HNOs, autophagy function, lipid droplet accumulation, or mechanism of tau phosphorylation was performed.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [4]
One study which combined HNOs with the MAPT R406W and the MAPT V337M mutation has identified lipid dyshomeostasis is a prominent characteristic of their mutant HNOs.
“One study which combined HNOs with the MAPT R406W and the MAPT V337M mutation has identified lipid dyshomeostasis is a prominent characteristic of their mutant HNOs4.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [4]
Lipid dyshomeostasis has been found in MAPT R406W mutant HNOs and FTLD as well as AD and related dementias, including dysregulation of cholesterol biosynthesis, uptake, storage, and transport.
“Lipid dyshomeostasis has been found in MAPT R406W mutant HNOs and FTLD as well as AD and related dementias4,10, including the dysregulation of cholesterol biosynthesis, uptake, storage, and transport.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [4]
The scRNA-seq data within their study highlighted cholesterol-related changes in astrocytes, while glycolytic changes were highlighted in neuronal populations.
“The scRNA-seq data within their study highlighted cholesterol-related changes in astrocytes, while glycolytic changes were highlighted in neuronal populations.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [4]
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GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau
Acosta Ingram, D., Turkes, E., Kim, T. Y., Vo, S., Sweeney, N., Bonte, M.-A., Rutherford, R., Julian, D. L., Pan, M., Marsh, J., et al. (2025) · Nature Communications · doi:10.1038/s41467-025-58585-w · Cited by 12
Metadata
- Authors
- Glasauer, S. M. K., Goderie, S. K., Rauch, J. N., Guzman, E., Audouard, M., Bertucci, T., Joy, S., Rommelfanger, E., Luna, G., Keane-Rivera, E., Lotz, S., Borden, S., Armando, A. M., Quehenberger, O., Temple, S., & Kosik, K. S.
- Venue
- Stem Cell Reports
- Publisher
- Elsevier BV
- Published
- 2022-09
- Volume
- 17
- Issue
- 9
- Pages
- 2127-2140
- ISSN
- 2213-6711
- PMC
- PMC9481908
- Cited by
- 46
- References
- 20
- Language
- en
- Licence
- Funders
- National Institutes of Health (1S10OD010786-01)
- Swiss National Science Foundation (P2ZHP3_174753, P400PB_186800)
- Larry L. Hillblom Foundation (R35 NS097277)
- National Institute of Neurological Disorders and Stroke (R35 NS097277)
- CurePSP (P30 AG066444, P01 AG03991, P01 AG026276)
- Office of the President, University of California
- University of California, Santa Barbara
- Rainwater Charitable Foundation (U54 NS100717-01, AG064116)
- National Institute on Aging (AG056293)
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