TFEB activator 1 is an orally effective, mTOR-independent activator of TFEB that significantly promotes the nuclear translocation of Flag-TFEB with an EC50 of 2167nM[1]. Transcription factor EB (TFEB) is a master regulator of lysosomal biogenesis and autophagy that coordinates cellular responses to nutrient availability and stress[2]. Once activated, TFEB induces lysosomal and autophagy gene expression, and enhances cellular clearance of aggregates and damaged organelles to maintain metabolic homeostasis[3]. TFEB activator 1 is commonly used in research on neurodegenerative diseases, such as Alzheimer's disease[4][5].
In vitro, TFEB activator 1 (1μM; 12h pretreatment; 15min co-treatment; 6h incubation) enhanced TFEB nuclear translocation, increased LC3B-II and SQSTM1/p62 protein levels, improved cell viability, prevented apoptosis, and promoted mitophagy in 6-OHDA/AA-treated SH-SY5Y cells[6].
References:
[1] Song JX, Sun YR, Peluso I, et al. A novel curcumin analog binds to and activates TFEB in vitro and in vivo independent of MTOR inhibition. Autophagy. 2016;12(8):1372-1389.
[2] Settembre C, Di Malta C, Polito VA, et al. TFEB links autophagy to lysosomal biogenesis. Science. 2011;332(6036):1429-1433.
[3] Franco-Juárez B, Coronel-Cruz C, Hernández-Ochoa B, et al. TFEB; Beyond Its Role as an Autophagy and Lysosomes Regulator. Cells. 2022;11(19):3153.
[4] Xie YQ, Zhu L, Wang XT.TFEB activator 1 enhances autophagic degradation of oligomeric amyloid-β in microglia. Sheng Li Xue Bao. 2024;76(3):365-375
[5] Perrone L, Squillaro T, Napolitano F, Terracciano C, Sampaolo S, Melone MAB. The Autophagy Signaling Pathway: A Potential Multifunctional Therapeutic Target of Curcumin in Neurological and Neuromuscular Diseases. Nutrients. 2019;11(8):1881.
[6] Zhuang XX, Wang SF, Tan Y, et al. Pharmacological enhancement of TFEB-mediated autophagy alleviated neuronal death in oxidative stress-induced Parkinson's disease models. Cell Death Dis. 2020;11(2):128.
[7] Song JX, Malampati S, Zeng Y, et al. A small molecule transcription factor EB activator ameliorates beta-amyloid precursor protein and Tau pathology in Alzheimer's disease models. Aging Cell. 2020;19(2):e13069.
TFEB activator 1是一种口服有效、不依赖mTOR的TFEB激活剂,能够显著促进Flag-TFEB的核易位,EC50值为2167nM[1]。转录因子EB(TFEB)是溶酶体生物发生和自噬的主要调控因子,可协调细胞对营养供应和应激的反应[2]。TFEB被激活后,可诱导溶酶体和自噬基因表达,增强细胞内聚物和受损细胞器的清除,从而维持代谢稳态[3]。TFEB activator 1常用于神经退行性疾病,如阿尔茨海默病的研究[4][5]。
在体外,TFEB activator 1(1μM;12小时预处理;15分钟共处理;6小时孵育)可增强6-OHDA/AA处理的SH-SY5Y细胞中TFEB的核易位,增加LC3B-II和SQSTM1/p62蛋白水平,提高细胞活力,抑制细胞凋亡,并促进线粒体自噬[6]。
在体内,TFEB activator 1(10mg/kg/天;灌胃;4个月)可减少5xFAD小鼠的全长APP、CTF-α/β和Aβ病理改变,增加TFEB核易位及自噬-溶酶体标志物(LC3B-II、LAMP1、CTSD),并恢复突触可塑性和记忆缺陷[7]。
















