OSCR

The mTOR-Dop1a-Agpat2 axis regulates nuclear phospholipid homeostasis.

Overview

Authors: Hirotaka Ariyama1, Atsushi Tsukamura2, Satoko Miyatake3,4,5, Satoko Okado1, Itsuki Itabashi1, Ami Ogura1, Atsunobu Suzuki1, Hyuga Kurakawa1, Yuki Sakaguchi1,6, Yuhki Nakatake7, Ryunosuke Sanada7, Ichiro Terakado8, Eriko Koshimizu3, Takeshi Mizuguchi3, Keisuke Hamada9, Kazuhiro Ogata9, Eiji Nakagawa10, Takafumi Sakakibara11, Manabu Shirai12, Yoshitaka Fujihara13
and 26 other authorsMukhtar Ullah14,15, Mathieu Quinodoz14,15,16, Carlo Rivolta14,15,16, Abdul Ghafoor Khan17, Muhammad Nadeem Khan17, Muhammad Ansar18,19, Erica H Gerkes20, Tuula Rinne21, Alexander PA Stegmann22, Margje Sinnema22, Malak Ali Alghamdi23, Essa Alharby24, Reham M Balahmar24, Naif AM Almontashiri24,25, Sarah Baer26,27, Amélie Piton28,26, Carla Díes Curià29, Sandra Mercier30,31, Benjamin Cogné30,31, Patrick Yap32,33, Shin-ya Morita34, Akiyoshi Kakita35,36, Mitsuhiro Kato37,38, Yoshihiro Maruo2, Naomichi Matsumoto3,4,39,40, Masaki Mori1,2,6
40 affiliations
  1. Department of Pediatric Physiology, Innovation & Research Support Center, Graduate School, International University of Health and Welfare, Tokyo, Japan
  2. Department of Pediatrics, Shiga University of Medical Science, Otsu, Japan
  3. Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
  4. Department of Clinical Genetics, Yokohama City University Hospital, Yokohama, Japan
  5. Department of Neurogenetics, Molecular Neuroscience Research Center, Shiga University of Medical Science, Otsu, Japan
  6. Advanced Pediatric Medicine, Tohoku University School of Medicine, Miyagi, Japan
  7. Department of Reproductive Medicine, Center for Regenerative Medicine, National Center for Child Health and Development (NCCHD), Tokyo, Japan
  8. Research Center for Animal Life Science (RCALS), Shiga University of Medical Science, Otsu, Japan
  9. Department of Biochemistry, Yokohama City University Graduate School of Medicine, Yokohama, Japan
  10. Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
  11. Department of Pediatrics, Nara Medical University, Kashihara, Japan
  12. Omics Research Center, National Cerebral and Cardiovascular Center, Osaka, Japan
  13. Department of Advanced Medical Technologies, National Cerebral and Cardiovascular Center, Osaka, Japan
  14. Institute of Molecular and Clinical Ophthalmology Basel, Basel, Switzerland
  15. Department of Ophthalmology, University of Basel, Basel, Switzerland
  16. Department of Genetics and Genome Biology, University of Leicester, Leicester, UK
  17. Bannu Medical College, MTI Bannu, Bannu, Pakistan
  18. Department of Ophthalmology, University of Lausanne, Jules-Gonin Eye Hospital, Fondation Asile des aveugles, Lausanne, Switzerland
  19. Advanced Molecular Genetics and Genomics Disease Research and Treatment Centre, Dow University of Health Sciences, Karachi, Pakistan
  20. University of Groningen, University Medical Center Groningen, Department of Genetics, Nijmegen, the Netherlands
  21. Department of Human Genetics, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands
  22. Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, the Netherlands
  23. Medical Genetics Division, Pediatric Department, College of Medicine, King Saud University, Riyadh, Saudi Arabia
  24. Center for Genetics and Inherited Diseases, Taibah University, Almadinah Almunwarah, Saudi Arabia
  25. Faculty of Applied Medical Sciences, Taibah University, Almadinah Almunwarah, Saudi Arabia
  26. Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
  27. Department of Pediatric Neurology, Strasbourg University Hospital, Strasbourg, France
  28. Laboratoire de Diagnostic Génétique, Institut de Génétique Médicale d'Alsace (IGMA), Hôspitaux Universitaire de Strasbourg, Strasbourg, France
  29. IMPaCT-Genómica - Enfermedades Raras, Servei de Genètica, Hospital del Mar, Universitat Pompeu Fabra (UPF), Barcelona, Spain
  30. Service de génétique médicale, CHU de Nantes, Nantes, France
  31. Institut du thorax, INSERM, CNRS, Nantes Université, Nantes, France
  32. Genetic Health Service New Zealand (Northern Hub), Auckland City Hospital, University of Auckland, Auckland, New Zealand
  33. Faculty of Medicine and Health Sciences, University of Auckland, Auckland, New Zealand
  34. Department of Pharmacotherapeutics, Shiga University of Medical Science, Otsu, Japan
  35. Department of Pathology, Brain Research Institute, Niigata University, Niigata, Japan
  36. Center for Human Brain Resource Initiative (ChBRI), Niigata University, Niigata, Japan
  37. Department of Pediatrics, Showa Medical University, Tokyo, Japan
  38. Epilepsy Medical Center, Showa Medical University Hospital, Tokyo, Japan
  39. Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan
  40. Medical Genome Center, National Center of Neurology and Psychiatry, Kodaira, Japan
Institutions: International University of Health and Welfare (Japan); Shiga University of Medical Science (Japan); Yokohama City University Hospital (Japan); Yokohama City University (Japan); Tohoku University (Japan); National Center For Child Health and Development (Japan); National Center of Neurology and Psychiatry (Japan); Nara Medical University (Japan); National Cerebral and Cardiovascular Center (Japan); University of Basel (Switzerland); Institute of Molecular and Clinical Ophthalmology Basel (Switzerland); University of Leicester (United Kingdom); Bannu Medical College (Pakistan); Dow University of Health Sciences (Pakistan); Fondation Asile des Aveugles (Switzerland); University of Lausanne (Switzerland); University Medical Center Groningen (Netherlands); University of Groningen (Netherlands); Radboud University Medical Center (Netherlands); Donders Institute for Brain, Cognition and Behaviour (Netherlands); Maastricht University Medical Centre (Netherlands); Maastricht University (Netherlands); King Saud University (Saudi Arabia); Taibah University (Saudi Arabia); Institut de génétique et de biologie moléculaire et cellulaire (France); Hôpitaux Universitaires de Strasbourg (France); Universitat Pompeu Fabra (Spain); Hospital Del Mar (Spain); Centre National de la Recherche Scientifique (France); Inserm (France); Centre Hospitalier Universitaire de Nantes (France); Institut du Thorax (France); Nantes Université (France); University of Auckland (New Zealand); Auckland City Hospital (New Zealand); Niigata University (Japan); SHOWA Medical University (Japan); SHOWA Medical University Hospital (Japan)
Journal: iScience, volume 29, issue 6, article 115860
Dates: received 11 August 2025; accepted 20 April 2026; published online 22 April 2026
Type: Research article · Language: English
License: CC BY
Identifiers: DOI 10.1016/j.isci.2026.115860 · PMID 42164854 · PMCID PMC13186030 · OpenAlex W7155166524
Open access: gold, a free copy (OpenAlex)
Status: code on request
Categories: developmental (subfield)
Methods: Statistics, Preprocessing, Smoothing, state filtering, decompositions
Keywords: biological sciences
Topic: PI3K/AKT/mTOR signaling in cancer (Molecular Biology, Biochemistry, Genetics and Molecular Biology), according to OpenAlex
Funding: Japan Society for the Promotion of Science (JP22K19499, JP22H05643, JP23H02829, JP23H02877, JP24H01417, JP24K02230, JP24K02247, JP21K07869); Japan Agency for Medical Research and Development (JP25ek0109617, JP25ek0109760, JP25ek0109648, JP25ek0109677, JP22gm6710009755, P25ek0109674); Japan Health Research Promotion Bureau (2021-B-01); Japan Epilepsy Research Foundation; Takeda Science Foundation; Shiga University of Medical Science; Japan Brain Foundation; National Center for Child Health and Development
Citations: not cited yet (Europe PMC); 58 references in the paper
Research resources: Neuro2a cells RRID:CVCL_0470, NIH3T3cells RRID:CVCL_0594

Abstract

The molecular mechanisms regulating the phospholipid (PL) metabolism in the nucleus remain to be elucidated. Here, we describe the role of Dop1a in controlling PL abundance in nuclear membranes (NMs) under the control of mTOR signaling. A shortage of lysophosphatidic acid (LPA) triggers the rapid localization of Dop1a to the nuclear pore complexes (NPCs), where Dop1a suppresses PL synthesis by binding to AGPAT2 (1-acylglycerol-3-phosphate O-acyltransferase 2), which is also localized at the NPCs. Loss of Dop1a results in elevated PL production, which leads to the formation of nuclear lipid droplets (nLDs). The titration of PL abundance is coordinated with proper cell cycle entry by Dop1a that restricts nuclear accumulation of CDK2. Thus, Dop1a safeguards cell division via surveilling the PL supply. Dop1a is highly expressed in neurons and is essential for neurobehavioral development in mice. DOP1A mutations have been identified in patients with neurodevelopmental disorders (NDDs). Thus, the proper function of Dop1a is crucial for the proper development of the nervous system.

Reproduced under the paper's license (CC BY), from the paper cited above.

Code

The paper says that its authors' code is available on request: it was not published with the paper, so there is nothing to verify.

The paper's code and data availability statement is in the Data section.

Tracing map

A tracing map links a paper to the code its authors published: this paper has none (its code is available on request), so it has no map.

Data

No dataset and no data link were found in the paper.

Data and code availability

The scRNA-seq data generated in this study have been deposited in the DNA Data Bank of Japan (DDBJ) database under the BioProject accession number PRJDB40458 and experiment accession number E-GEAD-1221. Additional datasets are available from the lead contact upon reasonable request.

Reproduced under the paper's license (CC BY), from the paper cited above.

Versions

The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.

Version 1, 29 September 2026: the first record

Recorded: type, language, journal, volume, issue, pages, dates, 46 authors, 1 keyword, 8 funders, 58 references, 2 RRIDs.

Cite

This paper

Ariyama, H., Tsukamura, A., Miyatake, S., Okado, S., Itabashi, I., Ogura, A., Suzuki, A., Kurakawa, H., Sakaguchi, Y., Nakatake, Y., Sanada, R., Terakado, I., Koshimizu, E., Mizuguchi, T., Hamada, K., Ogata, K., Nakagawa, E., Sakakibara, T., Shirai, M., . . . Mori, M. (2026). The mTOR-Dop1a-Agpat2 axis regulates nuclear phospholipid homeostasis. iScience, 29(6), 115860. https://doi.org/10.1016/j.isci.2026.115860

BibTeX

@article{ariyama2026mtor,
author = {Ariyama, Hirotaka and Tsukamura, Atsushi and Miyatake, Satoko and Okado, Satoko and Itabashi, Itsuki and Ogura, Ami and Suzuki, Atsunobu and Kurakawa, Hyuga and Sakaguchi, Yuki and Nakatake, Yuhki and Sanada, Ryunosuke and Terakado, Ichiro and Koshimizu, Eriko and Mizuguchi, Takeshi and Hamada, Keisuke and Ogata, Kazuhiro and Nakagawa, Eiji and Sakakibara, Takafumi and Shirai, Manabu and Fujihara, Yoshitaka and Ullah, Mukhtar and Quinodoz, Mathieu and Rivolta, Carlo and Khan, Abdul Ghafoor and Khan, Muhammad Nadeem and Ansar, Muhammad and Gerkes, Erica H and Rinne, Tuula and Stegmann, Alexander PA and Sinnema, Margje and Alghamdi, Malak Ali and Alharby, Essa and Balahmar, Reham M and Almontashiri, Naif AM and Baer, Sarah and Piton, Amélie and Curià, Carla Díes and Mercier, Sandra and Cogné, Benjamin and Yap, Patrick and Morita, Shin-ya and Kakita, Akiyoshi and Kato, Mitsuhiro and Maruo, Yoshihiro and Matsumoto, Naomichi and Mori, Masaki},
title = {{The mTOR-Dop1a-Agpat2 axis regulates nuclear phospholipid homeostasis}},
journal = {iScience},
year = {2026},
month = apr,
volume = {29},
number = {6},
pages = {115860},
publisher = {Elsevier},
issn = {2589-0042},
doi = {10.1016/j.isci.2026.115860},
url = {https://doi.org/10.1016/j.isci.2026.115860},
pmid = {42164854},
pmcid = {PMC13186030}
}

RIS

TY - JOUR
AU - Ariyama, Hirotaka
AU - Tsukamura, Atsushi
AU - Miyatake, Satoko
AU - Okado, Satoko
AU - Itabashi, Itsuki
AU - Ogura, Ami
AU - Suzuki, Atsunobu
AU - Kurakawa, Hyuga
AU - Sakaguchi, Yuki
AU - Nakatake, Yuhki
AU - Sanada, Ryunosuke
AU - Terakado, Ichiro
AU - Koshimizu, Eriko
AU - Mizuguchi, Takeshi
AU - Hamada, Keisuke
AU - Ogata, Kazuhiro
AU - Nakagawa, Eiji
AU - Sakakibara, Takafumi
AU - Shirai, Manabu
AU - Fujihara, Yoshitaka
AU - Ullah, Mukhtar
AU - Quinodoz, Mathieu
AU - Rivolta, Carlo
AU - Khan, Abdul Ghafoor
AU - Khan, Muhammad Nadeem
AU - Ansar, Muhammad
AU - Gerkes, Erica H
AU - Rinne, Tuula
AU - Stegmann, Alexander PA
AU - Sinnema, Margje
AU - Alghamdi, Malak Ali
AU - Alharby, Essa
AU - Balahmar, Reham M
AU - Almontashiri, Naif AM
AU - Baer, Sarah
AU - Piton, Amélie
AU - Curià, Carla Díes
AU - Mercier, Sandra
AU - Cogné, Benjamin
AU - Yap, Patrick
AU - Morita, Shin-ya
AU - Kakita, Akiyoshi
AU - Kato, Mitsuhiro
AU - Maruo, Yoshihiro
AU - Matsumoto, Naomichi
AU - Mori, Masaki
TI - The mTOR-Dop1a-Agpat2 axis regulates nuclear phospholipid homeostasis
T2 - iScience
J2 - iScience
PY - 2026
DA - 2026/04/22
VL - 29
IS - 6
SP - 115860
SN - 2589-0042
PB - Elsevier
DO - 10.1016/j.isci.2026.115860
UR - https://doi.org/10.1016/j.isci.2026.115860
LA - en
ER -

CSL-JSON

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