Integrating Microorganism-Based Therapy and Emerging Biotechnology in the Treatment of Intracranial Central Nervous...

The development of drug delivery systems for the treatment of intracranial central nervous system (CNS) diseases remains one of the most intractable medical problems in modern society, owing to the special physiological structure of the brain, including the existence of the blood-brain barrier (BBB), the CNS's immune privilege, and its high complexity and vulnerability. Recently, a leading approach in the CNS drug delivery domain has been to employ or simulate the physiological behavior of microorganisms to overcome the BBB and remodel the pathological immune microenvironment in intracranial tissue. Considering the exceptional advancements in microorganism-based CNS drug delivery systems, it is imperative to review the latest breakthroughs. Herein, we summarize the emerging trends at the intersection of microorganism-based drug delivery systems and emerging biomedical technology for the treatment of CNS diseases, with a particular focus on preclinical research into microorganism-based drug delivery systems to combat CNS diseases, aiming to describe a credible landscape for further clinical trials.