Redefining multiple sclerosis therapy through microbial immunomodulation and epigenetic control

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Multiple sclerosis (MS) is a chronic autoimmune disorder marked by immune-driven demyelination and neurodegeneration in the central nervous system. This Review explores the immunological, molecular, and epigenetic underpinnings of MS, emphasizing T and B cell involvement, dysregulated signaling pathways (e.g., TGF-β, Akt, Wnt), and the role of cell death in disease progression. Epigenetic mechanisms-such as DNA methylation and histone modifications, further modulate immune responses. While current therapies broadly suppress immunity, emerging approaches, including engineered bacteria, microbiome-based interventions, and cell therapies, offer targeted immune modulation and neuroprotection. Together, these strategies illuminate a path toward next-generation MS treatments with improved precision and efficacy.