Brain and behavior · 2025
The Role and Therapeutic Potential of the cGAS-STING Signaling Pathway in Alzheimer's Disease.
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Li Xue, Gao Wei, Ye Qiuyan, Li Honglin
Аннотация
PURPOSE: Alzheimer's disease (AD) is a neurodegenerative disorder characterized by progressive cognitive decline, posing a significant challenge to global public health. As a core signaling pathway in the mammalian innate immune system, the cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway plays a pivotal role in maintaining intracellular homeostasis. This review aims to systematically elucidate the role and therapeutic potential of the cGAS-STING signaling pathway in AD, focusing on its involvement in key pathological processes and its relevance to AD risk factors.
METHOD: Through literature search, we summarized the molecular mechanisms of the cGAS-STING pathway and its dysregulation in AD, emphasizing the integrated evidence linking cGAS-STING to neuroinflammation, autophagy impairment, and neuronal death, as well as its interactions with aging, obesity, cardiovascular disease, and diabetes.
FINDINGS: The cGAS-STING pathway is critically involved in AD pathogenesis, contributing to neuroinflammation, defective autophagy, and neuronal loss. Its activation is associated with multiple AD risk factors, suggesting a broad influence on disease progression. Pharmacological inhibition of cGAS-STING shows promise in attenuating these pathological features in preclinical models.
CONCLUSION: The cGAS-STING signaling pathway plays a central regulatory role in the central nervous system, and its dysregulation promotes neuroinflammation and is closely associated with AD. This pathway forms a vicious cycle by integrating multiple pathological signals, including mitochondrial dysfunction and endoplasmic reticulum stress. Small-molecule inhibitors and natural products targeting this pathway have demonstrated significant efficacy in preclinical studies, providing a basis for developing disease-modifying therapies for AD. Future efforts should focus on multi-target combination strategies (e.g., STING inhibitors co-administered with Aβ/tau drugs) and dynamically deciphering pathway alterations across AD stages to advance personalized treatment approaches.
METHOD: Through literature search, we summarized the molecular mechanisms of the cGAS-STING pathway and its dysregulation in AD, emphasizing the integrated evidence linking cGAS-STING to neuroinflammation, autophagy impairment, and neuronal death, as well as its interactions with aging, obesity, cardiovascular disease, and diabetes.
FINDINGS: The cGAS-STING pathway is critically involved in AD pathogenesis, contributing to neuroinflammation, defective autophagy, and neuronal loss. Its activation is associated with multiple AD risk factors, suggesting a broad influence on disease progression. Pharmacological inhibition of cGAS-STING shows promise in attenuating these pathological features in preclinical models.
CONCLUSION: The cGAS-STING signaling pathway plays a central regulatory role in the central nervous system, and its dysregulation promotes neuroinflammation and is closely associated with AD. This pathway forms a vicious cycle by integrating multiple pathological signals, including mitochondrial dysfunction and endoplasmic reticulum stress. Small-molecule inhibitors and natural products targeting this pathway have demonstrated significant efficacy in preclinical studies, providing a basis for developing disease-modifying therapies for AD. Future efforts should focus on multi-target combination strategies (e.g., STING inhibitors co-administered with Aβ/tau drugs) and dynamically deciphering pathway alterations across AD stages to advance personalized treatment approaches.