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Synergistic hyperactivation of both mTORC1 and mTORC2 underlies the neural abnormalities of PTEN-deficient human neurons and cortical organoids.

Navroop K Dhaliwal | Octavia Yifang Weng | Xiaoxue Dong | Afrin Bhattacharya | Mai Ahmed | Haruka Nishimura | Wendy W Y Choi | Aditi Aggarwal | Bryan W Luikart | Qiang Shu | Xuekun Li | Michael D Wilson | Jason Moffat | Lu-Yang Wang | Julien Muffat | Yun Li
Cell reports | 2024

Mutations in the phosphatase and tensin homolog (PTEN) gene are associated with severe neurodevelopmental disorders. Loss of PTEN leads to hyperactivation of the mechanistic target of rapamycin (mTOR), which functions in two distinct protein complexes, mTORC1 and mTORC2. The downstream signaling mechanisms that contribute to PTEN mutant phenotypes are not well delineated. Here, we show that pluripotent stem cell-derived PTEN mutant human neurons, neural precursors, and cortical organoids recapitulate disease-relevant phenotypes, including hypertrophy, electrical hyperactivity, enhanced proliferation, and structural overgrowth. PTEN loss leads to simultaneous hyperactivation of mTORC1 and mTORC2. We dissect the contribution of mTORC1 and mTORC2 by generating double mutants of PTEN and RPTOR or RICTOR, respectively. Our results reveal that the synergistic hyperactivation of both mTORC1 and mTORC2 is essential for the PTEN mutant human neural phenotypes. Together, our findings provide insights into the molecular mechanisms that underlie PTEN-related neural disorders and highlight novel therapeutic targets.

Pubmed ID: 38700984

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This is a list of tools and resources that we have found mentioned in this publication.


Goat anti-Mouse IgG (H+L) Secondary Antibody, HRP (antibody)

RRID:AB_228307

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Donkey anti-Chicken IgY (H+L) Highly Cross Adsorbed Secondary Antibody, Alexa Fluor™ 594 (antibody)

RRID:AB_2921073

This polyclonal secondary targets Chicken IgY (H+L) Highly Cross Adsorbed

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PKC Alpha antibody (antibody)

RRID:AB_2878965

This polyclonal targets PKC Alpha

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Phospho-mTOR (Ser2481) Antibody (antibody)

RRID:AB_3085338

This polyclonal targets Phospho-mTOR (Ser2481)

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Phospho-S6 Ribosomal Protein (Ser240/244) (D68F8) XP Rabbit mAb (antibody)

RRID:AB_10694233

This monoclonal targets Phospho-S6 Ribosomal Protein (Ser240/244) (D68F8) XP Rabbit mAb

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Phospho-Akt (Ser473) (193H12) Rabbit mAb (antibody)

RRID:AB_331168

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Raptor (24C12) Rabbit mAb (antibody)

RRID:AB_561245

This monoclonal targets Raptor (24C12) Rabbit mAb

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Rictor (53A2) Rabbit mAb (antibody)

RRID:AB_2179963

This monoclonal targets Rictor (53A2) Rabbit mAb

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mTOR (7C10) Rabbit mAb (antibody)

RRID:AB_2105622

This monoclonal targets mTOR

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Goat Polyclonal Antibody to MAP2 (antibody)

RRID:AB_2737286

This polyclonal targets MAP2, large isoforms, MAP2A, MAP2B

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Mouse Ki-67 Antigen (antibody)

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Akt Antibody (antibody)

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This polyclonal targets Akt

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Sox2 (D6D9) XP Rabbit mAb (antibody)

RRID:AB_2195767

This monoclonal targets Sox2

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Neural Module (software resource)

RRID:SCR_019270

Neural Module by Axion BioSystems Inc, provides simplified approach to set up, execution and analysis of neural experiments. Enables Maestro Pro and Edge to record and analyze key parameters of neural network function, including activity, synchrony, and network oscillations.

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AxIS (software resource)

RRID:SCR_016308

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Image Lab Software (software resource)

RRID:SCR_014210

Imaging software used to acquire and analyze images from specific Bio-Rad imaging systems. Users can analyze gel or blot features, capture optimized image data, and generate a report of the data. Image Lab software exclusively runs on the Gel Doc EZ imager, Gel Doc XR+ imaging system, ChemiDo MP, ChemiDoc XRS+ imaging systems, Criterion Stain Free imager, and the GS-900calibrated densitometer.

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Microsoft Excel (software resource)

RRID:SCR_016137

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Biorender (web application)

RRID:SCR_018361

Web tool for graphical illustrations for biological systems by BioRender. Used for articles and presentations. Collection of pre made icons and templates from life science fields for scientific illustrations. Customized icons possible on request.

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GraphPad Prism (software resource)

RRID:SCR_002798

Statistical analysis software that combines scientific graphing, comprehensive curve fitting (nonlinear regression), understandable statistics, and data organization. Designed for biological research applications in pharmacology, physiology, and other biological fields for data analysis, hypothesis testing, and modeling.

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Black Zen software (software resource)

RRID:SCR_018163

Software used to analyze images obtained from microscope. ZEN Black is software Zeiss uses to run their laser-based instruments.

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ImageJ (software resource)

RRID:SCR_003070

Open source Java based image processing software program designed for scientific multidimensional images. ImageJ has been transformed to ImageJ2 application to improve data engine to be sufficient to analyze modern datasets.

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WA01 (cell line)

RRID:CVCL_9771

Cell line WA01 is a Embryonic stem cell with a species of origin Homo sapiens

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WIBR3 (cell line)

RRID:CVCL_9767

Cell line WIBR3 is a Embryonic stem cell with a species of origin Homo sapiens (Human)

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Biorender (web application)

RRID:SCR_018361

Web tool for graphical illustrations for biological systems by BioRender. Used for articles and presentations. Collection of pre made icons and templates from life science fields for scientific illustrations. Customized icons possible on request.

View all literature mentions

Image Lab Software (software resource)

RRID:SCR_014210

Imaging software used to acquire and analyze images from specific Bio-Rad imaging systems. Users can analyze gel or blot features, capture optimized image data, and generate a report of the data. Image Lab software exclusively runs on the Gel Doc EZ imager, Gel Doc XR+ imaging system, ChemiDo MP, ChemiDoc XRS+ imaging systems, Criterion Stain Free imager, and the GS-900calibrated densitometer.

View all literature mentions

Black Zen software (software resource)

RRID:SCR_018163

Software used to analyze images obtained from microscope. ZEN Black is software Zeiss uses to run their laser-based instruments.

View all literature mentions

Neural Module (software resource)

RRID:SCR_019270

Neural Module by Axion BioSystems Inc, provides simplified approach to set up, execution and analysis of neural experiments. Enables Maestro Pro and Edge to record and analyze key parameters of neural network function, including activity, synchrony, and network oscillations.

View all literature mentions

AxIS (software resource)

RRID:SCR_016308

Software for multi electrode array recording for Axion Biosystems. Used in enhancing cardiac and neural analysis through data processing and signal monitoring.

View all literature mentions

Microsoft Excel (software resource)

RRID:SCR_016137

Software application with data analysis tools and spreadsheet templates to track and visualize data. It is used to manage and process data.

View all literature mentions

GraphPad Prism (software resource)

RRID:SCR_002798

Statistical analysis software that combines scientific graphing, comprehensive curve fitting (nonlinear regression), understandable statistics, and data organization. Designed for biological research applications in pharmacology, physiology, and other biological fields for data analysis, hypothesis testing, and modeling.

View all literature mentions

ImageJ (software resource)

RRID:SCR_003070

Open source Java based image processing software program designed for scientific multidimensional images. ImageJ has been transformed to ImageJ2 application to improve data engine to be sufficient to analyze modern datasets.

View all literature mentions

WA01 (cell line)

RRID:CVCL_9771

Cell line WA01 is a Embryonic stem cell with a species of origin Homo sapiens

View all literature mentions

WIBR3 (cell line)

RRID:CVCL_9767

Cell line WIBR3 is a Embryonic stem cell with a species of origin Homo sapiens (Human)

View all literature mentions

Goat anti-Mouse IgG (H+L) Secondary Antibody, HRP (antibody)

RRID:AB_228307

This polyclonal secondary targets IgG (H+L)

View all literature mentions

PKC Alpha antibody (antibody)

RRID:AB_2878965

This polyclonal targets PKC Alpha

View all literature mentions

Phospho-mTOR (Ser2481) Antibody (antibody)

RRID:AB_3085338

This polyclonal targets Phospho-mTOR (Ser2481)

View all literature mentions

Phospho-S6 Ribosomal Protein (Ser240/244) (D68F8) XP Rabbit mAb (antibody)

RRID:AB_10694233

This monoclonal targets Phospho-S6 Ribosomal Protein (Ser240/244) (D68F8) XP Rabbit mAb

View all literature mentions

Donkey anti-Chicken IgY (H+L) Highly Cross Adsorbed Secondary Antibody, Alexa Fluor™ 594 (antibody)

RRID:AB_2921073

This polyclonal secondary targets Chicken IgY (H+L) Highly Cross Adsorbed

View all literature mentions

Raptor (24C12) Rabbit mAb (antibody)

RRID:AB_561245

This monoclonal targets Raptor (24C12) Rabbit mAb

View all literature mentions

Rictor (53A2) Rabbit mAb (antibody)

RRID:AB_2179963

This monoclonal targets Rictor (53A2) Rabbit mAb

View all literature mentions

mTOR (7C10) Rabbit mAb (antibody)

RRID:AB_2105622

This monoclonal targets mTOR

View all literature mentions

Phospho-Akt (Ser473) (193H12) Rabbit mAb (antibody)

RRID:AB_331168

This monoclonal targets Phospho-Akt (Ser473) (193H12) Rabbit mAb

View all literature mentions

Akt Antibody (antibody)

RRID:AB_329827

This polyclonal targets Akt

View all literature mentions

Sox2 (D6D9) XP Rabbit mAb (antibody)

RRID:AB_2195767

This monoclonal targets Sox2

View all literature mentions

Mouse Ki-67 Antigen (antibody)

RRID:AB_2250503

This monoclonal targets Mki67

View all literature mentions

Goat Polyclonal Antibody to MAP2 (antibody)

RRID:AB_2737286

This polyclonal targets MAP2, large isoforms, MAP2A, MAP2B

View all literature mentions