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Article Dans Une Revue Molecular Psychiatry Année : 2024

The Alzheimer’s disease risk gene BIN1 regulates activity-dependent gene expression in human-induced glutamatergic neurons

Orthis Saha
  • Fonction : Auteur
Ana Raquel Melo de Farias
Dolores Siedlecki-Wullich
Bruna Soares Landeira
  • Fonction : Auteur
Johanna Gadaut
  • Fonction : Auteur
Arnaud Carrier
  • Fonction : Auteur
Anaïs-Camille Vreulx
  • Fonction : Auteur
Karine Guyot
  • Fonction : Auteur
Yun Shen
  • Fonction : Auteur
Philippe Amouyel
Julia Tcw
Devrim Kilinc
Claudio Marcos Queiroz
Jean-Charles Lambert
Marcos Costa

Résumé

Abstract Bridging Integrator 1 ( BIN1 ) is the second most important Alzheimer’s disease (AD) risk gene, but its physiological roles in neurons and its contribution to brain pathology remain largely elusive. In this work, we show that BIN1 plays a critical role in the regulation of calcium homeostasis, electrical activity, and gene expression of glutamatergic neurons. Using single-cell RNA-sequencing on cerebral organoids generated from isogenic BIN1 wild type (WT), heterozygous (HET) and homozygous knockout (KO) human-induced pluripotent stem cells (hiPSCs), we show that BIN1 is mainly expressed by oligodendrocytes and glutamatergic neurons, like in the human brain. Both BIN1 HET and KO cerebral organoids show specific transcriptional alterations, mainly associated with ion transport and synapses in glutamatergic neurons. We then demonstrate that BIN1 cell-autonomously regulates gene expression in glutamatergic neurons by using a novel protocol to generate pure culture of hiPSC-derived induced neurons (hiNs). Using this system, we also show that BIN1 plays a key role in the regulation of neuronal calcium transients and electrical activity via its interaction with the L-type voltage-gated calcium channel Cav 1.2 . BIN1 KO hiNs show reduced activity-dependent internalization and higher Cav 1.2 expression compared to WT hiNs. Pharmacological blocking of this channel with clinically relevant doses of nifedipine, a calcium channel blocker, partly rescues electrical and gene expression alterations in BIN1 KO glutamatergic neurons. Further, we show that transcriptional alterations in BIN1 KO hiNs that affect biological processes related to calcium homeostasis are also present in glutamatergic neurons of the human brain at late stages of AD pathology. Together, these findings suggest that BIN1 -dependent alterations in neuronal properties could contribute to AD pathophysiology and that treatment with low doses of clinically approved calcium blockers should be considered as an option to slow disease-onset and progression.

Dates et versions

hal-04528675 , version 1 (01-04-2024)

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Citer

Orthis Saha, Ana Raquel Melo de Farias, Alexandre Pelletier, Dolores Siedlecki-Wullich, Bruna Soares Landeira, et al.. The Alzheimer’s disease risk gene BIN1 regulates activity-dependent gene expression in human-induced glutamatergic neurons. Molecular Psychiatry, 2024, ⟨10.1038/s41380-024-02502-y⟩. ⟨hal-04528675⟩
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