Co-Expressed MicroRNAs Identify Potential Mechanisms Underlying Risk for Multimorbid Depression and Type 2 Diabetes...

Area of Science:

• Biomedical Science
• Genomics
• Women's Health

Background:

• Midlife women (40-64 years) disproportionately experience multimorbid depression and type 2 diabetes (T2D).
• Reproductive aging and biological changes during midlife contribute to this increased risk.
• Previous work identified co-expressed microRNAs (miRs) linked to high psychometabolic risk in prediabetic women.

Purpose of the Study:

• To identify messenger RNA (mRNA) targets regulated by specific miRs in midlife women with prediabetes.
• To explore biological pathways associated with these mRNA targets, elucidating mechanisms of psychometabolic risk.
• To provide insights into the complex interplay of factors contributing to multimorbid depression and T2D in this demographic.

Main Methods:

• Utilized baseline data from 603 midlife women in the Diabetes Prevention Program (DPP) with prediabetes.
• Performed in silico analyses using miRTarBase to identify mRNA targets of key co-expressed miRs.
• Conducted pathway enrichment analysis (KEGG) on predicted mRNA targets and thematically clustered pathways.

Main Results:

• Identified 13 mRNAs targeted by miRs associated with higher psychometabolic risk.
• Revealed 71 overrepresented KEGG pathways involving metabolic, inflammatory, endocrine, and stress-related processes.
• Uncovered multisystem biological themes underlying risk for multimorbid depression and T2D.

Conclusions:

• Identified specific mRNA targets and biological pathways implicated in psychometabolic risk for multimorbid depression and T2D in midlife women.
• Findings support the use of miRs as context-sensitive biomarkers for complex conditions in women.
• Highlights potential for precision health research and mechanistic targets for intervention in high-risk populations.