IL-17A Cytokine-Regulated Glut1 Expression in Placenta Cells

Area of Science:

• Reproductive biology
• Immunology
• Neuroscience

Background:

• Trophoblasts are crucial for placental nutrient and gas exchange.
• Maternal immune activation (MIA) elevates IL-17A, potentially affecting fetal brain development.
• The specific impact of IL-17A on placental function remains unclear.

Purpose of the Study:

• To investigate the effects of IL-17A on placental cell function and glucose transporter expression.
• To determine if IL-17A influences glucose transporter expression in vivo in a maternal immune activation model.

Main Methods:

• Human placental cell lines (JAR, JEG-3) were treated with IL-17A.
• Cell morphology, viability, and gene/protein expression (IL-17R, PPARγ, Glut1, Glut3) were analyzed.
• A rodent model of MIA was used to examine placental and fetal brain glucose transporter expression.

Main Results:

• IL-17A treatment did not affect placental cell morphology or viability.
• IL-17A increased IL-17R, PPARγ, Glut1, and Glut3 expression in placental cells.
• In MIA rodents, placental Glut1 and Glut3 mRNA expression increased, but fetal brain expression decreased.

Conclusions:

• IL-17A signaling via IL-17R occurs in both placenta and fetal brain.
• IL-17A upregulates glucose transporters in the placenta.
• A regulatory mechanism exists for IL-17A-mediated glucose transporter expression in the placenta during MIA.