Gene Expression Differences Based on Low Total 25(OH)D and Low VDBP Status with a Preterm Birth

Area of Science:

• Reproductive Health
• Genomics
• Nutritional Science

Background:

• Preterm birth (PTB) disproportionately affects non-Hispanic Black women in the U.S.
• Vitamin D deficiency (VDD) and low vitamin D-binding protein (VDBP) are linked to PTB, but lack predictive biomarkers.
• Identifying predictive biomarkers for PTB is crucial for targeted interventions.

Purpose of the Study:

• To identify gene expression differences associated with PTB in Black women.
• To investigate gene expression patterns related to VDD and VDBP levels.
• To explore potential predictive biomarkers for PTB.

Main Methods:

• Pilot study involving 19 pregnant women from the Biosocial Impact on Black Births (BIBB) study.
• Gene expression analysis comparing women with PTB vs. full-term birth.
• Gene expression analysis comparing women with VDD vs. vitamin D sufficiency and low VDBP vs. high VDBP.

Main Results:

• 47 genes upregulated and 16 downregulated in PTB cases compared to controls.
• Significant gene expression changes observed in VDD and low VDBP groups (e.g., 361 genes downregulated in VDD).
• Neutrophil-expressed genes were downregulated across PTB, VDD, and low VDBP groups.

Conclusions:

• Vitamin D and VDBP status may influence gene expression patterns relevant to PTB.
• These findings suggest VDD and VDBP as potential clinical markers for PTB risk.
• Further research is warranted to validate these biomarkers for PTB prediction.