Noncanonical function of folate through folate receptor 1 during neural tube formation

Abstract Folate supplementation reduces the occurrence of neural tube defects (NTDs), birth defects consisting in the failure of the neural tube to form and close. The mechanisms underlying NTDs and their prevention by folate remain unclear. Here we show that folate receptor 1 (FOLR1) is necessary f...

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Main Authors: Olga A. Balashova, Alexios A. Panoutsopoulos, Olesya Visina, Jacob Selhub, Paul S. Knoepfler, Laura N. Borodinsky
Format: Article
Language:English
Published: Nature Portfolio 2024-02-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-024-45775-1
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author Olga A. Balashova
Alexios A. Panoutsopoulos
Olesya Visina
Jacob Selhub
Paul S. Knoepfler
Laura N. Borodinsky
author_facet Olga A. Balashova
Alexios A. Panoutsopoulos
Olesya Visina
Jacob Selhub
Paul S. Knoepfler
Laura N. Borodinsky
author_sort Olga A. Balashova
collection DOAJ
description Abstract Folate supplementation reduces the occurrence of neural tube defects (NTDs), birth defects consisting in the failure of the neural tube to form and close. The mechanisms underlying NTDs and their prevention by folate remain unclear. Here we show that folate receptor 1 (FOLR1) is necessary for the formation of neural tube-like structures in human-cell derived neural organoids. FOLR1 knockdown in neural organoids and in Xenopus laevis embryos leads to NTDs that are rescued by pteroate, a folate precursor that is unable to participate in metabolism. We demonstrate that FOLR1 interacts with and opposes the function of CD2-associated protein, molecule essential for apical endocytosis and turnover of C-cadherin in neural plate cells. In addition, folates increase Ca2+ transient frequency, suggesting that folate and FOLR1 signal intracellularly to regulate neural plate folding. This study identifies a mechanism of action of folate distinct from its vitamin function during neural tube formation.
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spelling doaj.art-f923a482aa8247899a9dcf1a160c9ade2024-03-05T19:31:40ZengNature PortfolioNature Communications2041-17232024-02-0115111710.1038/s41467-024-45775-1Noncanonical function of folate through folate receptor 1 during neural tube formationOlga A. Balashova0Alexios A. Panoutsopoulos1Olesya Visina2Jacob Selhub3Paul S. Knoepfler4Laura N. Borodinsky5Department of Physiology & Membrane Biology, Shriners Hospitals for Children Northern California, University of California Davis, School of MedicineDepartment of Physiology & Membrane Biology, Shriners Hospitals for Children Northern California, University of California Davis, School of MedicineDepartment of Physiology & Membrane Biology, Shriners Hospitals for Children Northern California, University of California Davis, School of MedicineTufts–USDA Human Nutrition Research Center on AgingDepartment of Cell Biology & Human Anatomy, Shriners Hospitals for Children Northern California, University of California Davis, School of MedicineDepartment of Physiology & Membrane Biology, Shriners Hospitals for Children Northern California, University of California Davis, School of MedicineAbstract Folate supplementation reduces the occurrence of neural tube defects (NTDs), birth defects consisting in the failure of the neural tube to form and close. The mechanisms underlying NTDs and their prevention by folate remain unclear. Here we show that folate receptor 1 (FOLR1) is necessary for the formation of neural tube-like structures in human-cell derived neural organoids. FOLR1 knockdown in neural organoids and in Xenopus laevis embryos leads to NTDs that are rescued by pteroate, a folate precursor that is unable to participate in metabolism. We demonstrate that FOLR1 interacts with and opposes the function of CD2-associated protein, molecule essential for apical endocytosis and turnover of C-cadherin in neural plate cells. In addition, folates increase Ca2+ transient frequency, suggesting that folate and FOLR1 signal intracellularly to regulate neural plate folding. This study identifies a mechanism of action of folate distinct from its vitamin function during neural tube formation.https://doi.org/10.1038/s41467-024-45775-1
spellingShingle Olga A. Balashova
Alexios A. Panoutsopoulos
Olesya Visina
Jacob Selhub
Paul S. Knoepfler
Laura N. Borodinsky
Noncanonical function of folate through folate receptor 1 during neural tube formation
Nature Communications
title Noncanonical function of folate through folate receptor 1 during neural tube formation
title_full Noncanonical function of folate through folate receptor 1 during neural tube formation
title_fullStr Noncanonical function of folate through folate receptor 1 during neural tube formation
title_full_unstemmed Noncanonical function of folate through folate receptor 1 during neural tube formation
title_short Noncanonical function of folate through folate receptor 1 during neural tube formation
title_sort noncanonical function of folate through folate receptor 1 during neural tube formation
url https://doi.org/10.1038/s41467-024-45775-1
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