Mitochondrial-derived microproteins in lung disease: insights and implications

Area of Science:

• Biochemistry and Molecular Biology
• Cellular Biology
• Genomics

Background:

• Mitochondrial-Derived Microproteins (MDPs) are encoded by mitochondrial DNA sORFs and exhibit diverse cellular actions.
• Existing research primarily focuses on MDPs like MOTS-c and Humanin in high-energy tissues and age-related diseases.
• A significant knowledge gap exists regarding MDPs' involvement in pulmonary physiology and pathology.

Purpose of the Study:

• To review and highlight the current understanding of MDPs in lung homeostasis.
• To identify knowledge gaps concerning MDPs' roles in lung diseases such as Acute Lung Injury (ALI), Chronic Obstructive Pulmonary Disease (COPD), allergic asthma (AA), and Pulmonary Fibrosis (PF).
• To emphasize the therapeutic potential of MDPs for pulmonary conditions.

Main Methods:

• Literature review and synthesis of existing research on MDPs.
• Analysis of studies investigating MDPs in various disease models.
• Identification of research gaps and future directions.

Main Results:

• MDPs possess mitochondrial, nuclear, and extracellular functions.
• MDPs are implicated in diseases affecting the heart, brain, and skeletal muscle.
• Their specific roles in lung diseases remain largely unexplored.

Conclusions:

• Further investigation into MDPs is crucial for understanding lung homeostasis and disease.
• MDPs represent a promising area for novel therapeutic strategies in pulmonary medicine.
• Bridging the knowledge gap on MDPs in lung biology is essential for clinical advancement.