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Immunological link between periodontitis and type 2 diabetes deciphered by single-cell RNA analysis
Hansong Lee1, Ji-Young Joo2, Jae-Min Song3
1Medical Research Institute, Pusan National University, Yangsan, Republic of Korea.
Clinical and Translational Medicine
|December 12, 2023
Summary
Type 2 diabetes mellitus (DM) worsens immune responses in periodontitis (PD). DM impairs T/NK cell function and activates pathways like RESISTIN, revealing the immunological link between these conditions.
Area of Science:
- Immunology
- Metabolic Disorders
- Oral Health
Background:
- Type 2 diabetes mellitus (DM) is linked to periodontitis (PD), but their immunological connection is unclear.
- Understanding this bidirectional relationship is crucial for managing complications.
Purpose of the Study:
- To compare immune responses in patients with PD alone versus those with both PD and DM (PDDM).
- To elucidate the immunological basis of the PD-DM connection.
Main Methods:
- Single-cell RNA sequencing of peripheral blood mononuclear cells from healthy controls, PD patients, and PDDM patients.
- Comparative analysis of intracellular and intercellular immune cell differences.
Main Results:
- Classical monocytes showed significant transcriptional changes with elevated pro-inflammatory cytokines in both PD and PDDM.
- DM diminished CD8+ T and NK cell effector functions and altered their differentiation.
- The RESISTIN pathway, linked to insulin resistance, was activated in both PD and PDDM.
Conclusions:
- DM exacerbates immune deterioration in periodontitis, particularly affecting T/NK cell immunity.
- This study clarifies the immunological underpinnings connecting periodontitis and type 2 diabetes.
