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Lactate and Lactylation in Respiratory Diseases: from Molecular Mechanisms to Targeted Strategies
Qi Jia1,2,3, Quan Yuan1,2,3, Xiangdong Chen1,2,3
1Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
Introduction:
Lactate has emerged as a multifunctional signaling molecule regulating various physiological and pathological processes. Furthermore, lactylation, a newly identified posttranslational modification triggered by lactate accumulation, plays significant roles in human health and diseases. This study aims to investigate the roles of lactate/lactylation in respiratory diseases.
Methods:
Comprehensive literature analysis was conducted using PubMed database, utilizing a range of keywords including "lactate", "lactylation", "lung", "pulmonary", and "disease".
Results:
Emerging evidence indicates that increased glycolytic flux, resultant lactate accumulation, and elevated lactylation levels play key roles in the pathogenesis of respiratory diseases, including lung cancer, idiopathic pulmonary fibrosis (IPF), acute lung injury/acute respiratory distress syndrome (ALI/ARDS), pulmonary hypertension (PH), and asthma. Under these conditions, the upregulation of glycolytic enzymes and increased lactate transport are observed. Elevated levels of lactate and lactylation profoundly influence multiple biological processes, such as inflammatory responses, immune cell activation, autophagy, ferroptosis, EMT, tumorigenesis, and fibrosis, and lactate/lactylation-targeted therapies have demonstrated therapeutic efficacy against diverse respiratory illnesses.
Conclusions:
Elevated levels of lactate and lactylation play key roles in the pathogenesis of various respiratory diseases, and lactate/lactylation-targeted therapies appear to be potential therapeutic strategies for these respiratory diseases.
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