Higher plasma soluble TREM2 correlates with reduced cerebral tau accumulation in Alzheimer’s disease

IF 9.6 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Guoyu Lan, Anqi Li, Fernando Gonzalez-Ortiz, Jieqin Lv, Wenqing Ran, Yue Cai, Pan Sun, Lin Liu, Jie Yang, Laihong Zhang, Zhengbo He, Lili Fang, Xin Zhou, Yalin Zhu, Zhen Liu, Xiang Fan, Xuhui Chen, Linsen Xu, Qingyong Wang, Xinlu Wang, Kun Sun, Guanxun Cheng, Ying Han, Kaj Blennow, Lu Wang, Pengcheng Ran, Tengfei Guo
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引用次数: 0

Abstract

Loss-of-function mutation of triggering receptor expressed on myeloid cell 2 (TREM2) is associated with increased risks for Alzheimer’s disease (AD). Recent animal studies reveal that the activation of peripheral TREM2 signaling may affect cerebral β-amyloid (Aβ) and tau aggregates. However, the underlying relationship between peripheral TREM2 and brain AD pathology has not yet been well-elucidated in the aging population. In this study, we collected 318 Chinese older adults with Aβ PET and plasma biomarker measures, including soluble TREM2 (sTREM2) and glial fibrillary acidic protein (GFAP), a proxy for astrocyte reactivity. Additionally, 129 participants underwent tau PET scans. We explored the association between plasma sTREM2, GFAP, and primary AD pathology. Plasma sTREM2 was negatively associated with reduced temporal tau PET burden in participants with abnormal Aβ and tau pathology. Higher plasma sTREM2 was related to the weaker association of Aβ pathology and plasma phosphorylated tau with tau PET increases. In contrast, elevated plasma GFAP was related to greater Aβ and tau PET burden along with stronger Aβ-related tau accumulation. Finally, higher plasma sTREM2 was linked to attenuated strength of the association between plasma GFAP and tau PET increases at both pre-defined regions of interest and voxel levels. Altogether, our findings suggest distinct relationships between plasma sTREM2 and GFAP with cerebral tau pathology, providing novel insights into the roles of peripheral TREM2 signaling and astrocytic reactivity in AD neuropathological development. This study has important implications, such as targeting the peripheral TREM2 signature, which may be a potential strategy for future AD therapies.

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来源期刊
Molecular Psychiatry
Molecular Psychiatry 医学-精神病学
CiteScore
20.50
自引率
4.50%
发文量
459
审稿时长
4-8 weeks
期刊介绍: Molecular Psychiatry focuses on publishing research that aims to uncover the biological mechanisms behind psychiatric disorders and their treatment. The journal emphasizes studies that bridge pre-clinical and clinical research, covering cellular, molecular, integrative, clinical, imaging, and psychopharmacology levels.
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