High glucose inhibits neural differentiation by excessive autophagy <em>via</em> peroxisome proliferator-activated receptor gamma

The high prevalence of prediabetes and diabetes globally has led to the widespread occurrence of severe complications, such as diabetic neuropathy, which is a result of chronic hyperglycemia. Studies have demonstrated that maternal diabetes can lead to neural tube defects by suppressing neurogenesis during neuroepithelium development. While aberrant autophagy has been associated with abnormal neuronal differentiation, the mechanism by which high glucose suppresses neural differentiation in stem cells remains unclear. Therefore, we developed a neuronal cell differentiation model of retinoic acid induced P19 cells to investigate the impact of high glucose on neuronal differentiation in vitro. Our findings indicate that high glucose (HG) hinders neuronal differentiation and triggers excessive. Furthermore, HG treatment significantly reduces the expression of markers for neurons (Tuj1) and glia (GFAP), while enhancing autophagic activity mediated by peroxisome proliferator-activated receptor gamma (PPARγ). By manipulating PPARγ activity through pharmacological approaches and genetically knocking it down using shRNA, we discovered that altering PPARγ activity affects the differentiation of neural stem cells exposed to HG. Our study reveals that PPARγ acts as a downstream mediator in high glucose-suppressed neural stem cell differentiation and that refining autophagic activity via PPARγ at an appropriate level could improve neuronal differentiation efficiency. Our data provide novel insights and potential therapeutic targets for the clinical management of gestational diabetes mellitus.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:67

Enthalten in:

European journal of histochemistry : EJH - 67(2023), 2 vom: 11. Mai

Sprache:

Englisch

Beteiligte Personen:

Pan, Yin [VerfasserIn]
Qiu, Di [VerfasserIn]
Chen, Shu [VerfasserIn]
Han, Xiaoxue [VerfasserIn]
Li, Ruiman [VerfasserIn]

Links:

Volltext

Themen:

Glucose
IY9XDZ35W2
Journal Article
PPAR gamma

Anmerkungen:

Date Completed 18.05.2023

Date Revised 02.06.2023

published: Electronic

Citation Status MEDLINE

doi:

10.4081/ejh.2023.3691

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM356737837