PIEZO1, sensing the touch during erythropoiesis

Area of Science:

• Cell Physiology
• Mechanobiology
• Hematology

Background:

• The 2021 Nobel Prize highlighted PIEZO mechanotransducers' importance in cell physiology.
• PIEZO1 is known to regulate red blood cell hydration under mechanical stress.
• Emerging evidence indicates PIEZO1 has a wider role in the erythroid lineage.

Purpose of the Study:

• To review and update knowledge on PIEZO1 functions during erythropoiesis.
• To explore PIEZO1's role from progenitor cells to red blood cell clearance.

Main Methods:

• Literature review of PIEZO1 functions in erythropoiesis.
• Analysis of in-vitro data on PIEZO1 and integrin activation.
• Examination of PIEZO1 expression in macrophages and erythrophagocytosis.

Main Results:

• PIEZO1 is expressed in erythroid progenitors, regulating proliferation and differentiation.
• PIEZO1 may mediate cell-microenvironment interactions via integrin activation in erythroblasts.
• PIEZO1 on macrophages regulates red blood cell clearance (erythrophagocytosis).

Conclusions:

• PIEZO1 mediates mechanotransduction continuously throughout erythropoiesis.
• Understanding PIEZO1's role advances hereditary xerocytosis pathophysiology.
• PIEZO1 presents potential therapeutic targets for future treatments.