RESEARCH PAPER
Roles of mitophagy and immune infiltration in Parkinson's disease: new perspectives from bioinformatics analysis and A53T transgenic mice.
AI Summary
Using bioinformatics, single-cell RNA-seq datasets, and validation in A53T α-synuclein transgenic mice, the paper identifies five mitophagy-related hub genes (CANX, GABARAPL1, HSPD1, PPARGC1A, TOMM20) that are differentially expressed across substantia nigra cell types and peripheral immune cells…
Why It Matters
By linking validated mitophagy-related genes to both CNS cell-specific and peripheral immune alterations in PD, the study provides actionable candidate targets and biomarkers for mitochondrial-focused therapeutic development and immune-modulating strategies.
Abstract
BACKGROUND: Mitophagy plays a critical role in the pathology of Parkinson's disease (PD) via mitochondrial quality control, making it a promising therapeutic target. However, the precise mechanistic role of mitophagy in PD pathogenesis and progression remains unclear.
METHODS: We conducted a bioinformatic analysis to identify hub mitophagy-related differentially expressed genes (hub-MPDEGs). The mRNA expression levels of these identified genes were validated using two single-cell RNA sequencing datasets (GSE178265 and PRJNA1145007) and further confirmed in an α-synuclein A53T transgenic mouse model.
RESULTS: Five hub-MPDEGs were identified: CANX, GABARAPL1, HSPD1, PPARGC1A, and TOMM20. Transcriptomic analysis revealed elevated abundance of these genes in α-synuclein A53T mice compared to controls. Single-cell resolution analysis demonstrated significant differential expression of these genes in astrocytes, dopamine neurons, glutamatergic neurons, endothelial cells, and oligodendrocyte precursor cells within the substantia nigra of PD samples compared to controls. Furthermore, significant differences in mRNA levels were observed in peripheral immune cells, specifically CD4+ T cells, CD8+ T cells, monocytes, and NK cells, between control and PD samples.
CONCLUSIONS: This study identifies and validates five key mitophagy-related genes that are differentially regulated in the central nervous system and peripheral immune cells in the context of Parkinson's disease. These findings highlight the systemic nature of mitophagy dysregulation in PD.
