The TRIM21-FOXD1-BCL-2 axis underlies hyperglycaemic cell death and diabetic tissue damage

© 2023. The Author(s)..

Chronic hyperglycaemia is a devastating factor that causes diabetes-induced damage to the retina and kidney. However, the precise mechanism by which hyperglycaemia drives apoptotic cell death is incompletely known. Herein, we found that FOXD1, a FOX family transcription factor specifically expressed in the retina and kidney, regulated the transcription of BCL-2, a master regulator of cell survival. Intriguingly, the protein level of FOXD1, which responded negatively to hyperglycaemic conditions, was controlled by the TRIM21-mediated K48-linked polyubiquitination and subsequent proteasomal degradation. The TRIM21-FOXD1-BCL-2 signalling axis was notably active during diabetes-induced damage to murine retinal and renal tissues. Furthermore, we found that tartary buckwheat flavonoids effectively reversed the downregulation of FOXD1 protein expression and thus restored BCL-2 expression and facilitated the survival of retinal and renal tissues. In summary, we identified a transcription factor responsible for BCL-2 expression, a signalling axis (TRM21-FOXD1-BCL-2) underlying hyperglycaemia-triggered apoptosis, and a potential treatment for deleterious diabetic complications.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:14

Enthalten in:

Cell death & disease - 14(2023), 12 vom: 13. Dez., Seite 825

Sprache:

Englisch

Beteiligte Personen:

Cheng, Wenwen [VerfasserIn]
Cai, Cifeng [VerfasserIn]
Xu, Yifan [VerfasserIn]
Xiao, Xueqi [VerfasserIn]
Shi, Tiantian [VerfasserIn]
Liao, Yueling [VerfasserIn]
Wang, Xiaoyi [VerfasserIn]
Chen, Shasha [VerfasserIn]
Zhou, Meiliang [VerfasserIn]
Liao, Zhiyong [VerfasserIn]

Links:

Volltext

Themen:

114100-40-2
Bcl2 protein, mouse
Forkhead Transcription Factors
Foxd1 protein, mouse
Journal Article
Proto-Oncogene Proteins c-bcl-2
Research Support, Non-U.S. Gov't
SS-A antigen

Anmerkungen:

Date Completed 20.12.2023

Date Revised 25.01.2024

published: Electronic

Citation Status MEDLINE

doi:

10.1038/s41419-023-06355-1

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM365834343