# Piezo1 Regulates Odontogenesis via a FAM83G-Mediated Mechanism in Dental Papilla Cells In Vitro and In Vivo

## TL;DR

This study shows that Piezo1 helps teeth develop by controlling FAM83G in dental cells, both in lab and living models.

## Contribution

The novel finding is that Piezo1 positively regulates odontogenesis by inhibiting FAM83G in dental papilla cells.

## Key findings

- Piezo1 knockdown impairs odontogenic differentiation, while its activation enhances it.
- FAM83G is upregulated when Piezo1 is knocked down, and silencing FAM83G promotes odontogenesis.
- Piezo1's role in odontogenesis was confirmed in both in vitro and in vivo models.

## Abstract

This study explored the role of Piezo1 in the odontogenic differentiation of dental papilla cells (DPCs) and tissue, focusing on a mechanism involving family with sequence similarity 83, member G (FAM83G). Here, we found Piezo1, a mechanosensitive cation channel, was upregulated during odontogenesis in DPCs and dental papilla tissues. Knockdown of Piezo1 impaired odontogenic differentiation, while its activation by Yoda1 enhanced the process. Using a 3D culture model and an ectopic transplantation model, we confirmed Piezo1’s role in vivo. RNA sequencing (RNA-seq) analysis revealed that FAM83G was upregulated in Piezo1-knockdown cells, and FAM83G silencing enhanced odontogenesis in DPCs. These findings indicate that Piezo1 positively regulates odontogenesis by inhibiting FAM83G in DPCs both in vitro and in vivo, with Piezo1 representing a potential target for dental tissue regeneration.