ANGPTL4 participates in gestational diabetes mellitus via regulating Akt pathway

Area of Science:

• Endocrinology
• Metabolic Disorders
• Molecular Biology

Background:

• Gestational diabetes mellitus (GDM) is a significant pregnancy complication.
• The role of Angiopoietin-like 4 (ANGPTL4) in GDM pathogenesis is not fully understood.

Purpose of the Study:

• To investigate ANGPTL4 expression levels in GDM patients.
• To elucidate the underlying mechanisms of ANGPTL4's involvement in GDM.

Main Methods:

• Serum ANGPTL4 levels were measured in GDM patients and healthy pregnant women.
• In vitro studies using 3T3-L1 cells assessed the impact of ANGPTL4 knockdown on apoptosis, proliferation, cell cycle, glucose uptake, and adipocyte differentiation.
• Quantitative Reverse Transcriptase-Polymerase Chain Reaction (qRT-PCR), enzyme-linked immunosorbent assay (ELISA), and Western blot were used to analyze cytokine secretion and key signaling pathways (NF-kB, Akt).

Main Results:

• ANGPTL4 was found to be down-regulated in the serum of GDM patients.
• Reduced ANGPTL4 inhibited apoptosis and promoted proliferation in 3T3-L1 cells.
• Down-regulated ANGPTL4 impaired glucose uptake and the Akt pathway.
• ANGPTL4 did not significantly affect cell cycle or adipocyte differentiation.
• Decreased ANGPTL4 led to increased inflammatory cytokine secretion and activation of the NF-kB pathway.

Conclusions:

• ANGPTL4 is down-regulated in GDM.
• Reduced ANGPTL4 may contribute to GDM development by promoting insulin resistance and inflammatory cytokine release.