Results 81 to 90 of about 16,783,083 (225)

ATF4 promotes glutaminolysis and glycolysis in colorectal cancer by transcriptionally inducing SLC1A5

Acta Biochimica et Biophysica Sinica
Glutaminolysis and glycolysis promote the malignant progression of colorectal cancer. The role of activating transcription factor 4 (ATF4) in solute carrier family 1 member 5 (SLC1A5)-mediated glutaminolysis and ...
Zhou Zengli, Ye Shufang, Chen Jingyu, Dai Fei, Chen Luyi, Ye Ran, Zhang Jianmei, Chen Gefei, Wang Yanjiao, Liu Yangyang   +9 more
doaj   +1 more source

A Blood‐Derived Factor Rescues ALS: Platelet Factor 4 Activates OPTN‐Dependent Autophagy to Clear SOD1 Aggregates Independently of PINK1

Advanced Science, EarlyView.
Systemic platelet factor 4 (PF4) is significantly depleted in amyotrophic lateral sclerosis (ALS). Peripheral PF4 replenishment restores central proteostasis by driving OPTN‐dependent, PINK1‐independent selective autophagy in motor neurons. This intervention effectively clears toxic SOD1 aggregates, blunts glial activation, and preserves neuromuscular ...
Qingjian Xie, Yanbo Zhu, Wenhua Jiang, Haobo Xie, Yaojia Li, Mengjie Hu, Kezheng Li, Huan Yu, Yixuan Pan, Chaoyi Jiang, Xueqin Song, Dongsheng Fan, Binbin Deng   +12 more
wiley   +1 more source

Myxoma virus attenuates expression of activating transcription factor 4 (ATF4) which has implications for the treatment of proteasome inhibitor–resistant multiple myeloma

Oncolytic Virotherapy, 2015
The recent development of chemotherapeutic proteasome inhibitors, such as bortezomib, has improved the outcomes of patients suffering from the plasma cell malignancy multiple myeloma. Unfortunately, many patients treated with these drugs still suffer relapsing disease due to treatment-induced upregulation of the antiapoptotic protein Mcl1.
Dunlap,Katherine, Bartee,Mee, Bartee,Eric   +2 more
openaire   +4 more sources

Targeting Atf4 for enhanced neuroprotection: Role of quercetin-loaded EVs in ischemic stroke

Journal of Pharmaceutical Analysis
This study investigates the neuroprotective potential of extracellular vesicles (EVs) delivering quercetin-3-O-β-d-glucuronic acid (QG-EVs) in cerebral ischemia-reperfusion injury (CIRI). Targeted brain delivery of QG-EVs was confirmed, with neuron cells
Lanqing Zhao, Yu Chen, Xiaoxu Ding, Hongxi Li, Jinwei Li   +4 more
doaj   +1 more source

Endoplasmic reticulum stress downregulates PGC-1α in skeletal muscle through ATF4 and an mTOR-mediated reduction of CRTC2

Cell Communication and Signaling, 2022
Background Peroxisome proliferator-activated receptor γ (PPARγ) coactivator 1α (PGC-1α) downregulation in skeletal muscle contributes to insulin resistance and type 2 diabetes mellitus.
Marta Montori-Grau, David Aguilar-Recarte, Mohammad Zarei, Javier Pizarro-Delgado, Xavier Palomer, Manuel Vázquez-Carrera   +5 more
doaj   +1 more source

A Novel Pak1 Activator Ameliorates ER Stress for HFpEF Therapy

Advanced Science, EarlyView.
Chronic metabolic stress is a major contributor to HFpEF progression. Under prolonged metabolic stress, Pak1 activity becomes impaired, contributing to disrupted ER proteostasis, cardiomyocyte apoptosis, fibrosis, and diastolic dysfunction. Mechanistically, Pak1 overexpression activates the ERK1/2–MNK1–eIF4E signaling axis, promotes translational ...
Honglin Xu, Hongyuan Zhang, Tayyiba Azam, Susanne S. Hille, Yingjuan Liu, Min Zi, Jiaqing Lang, He Yu, Yujia Cao, Bernard D. Keavney, Tamer M. A. Mohamed, Jessica M. Miller, Riham R. E. Abouleisa, Ming Xu, Elizabeth J. Cartwright, Oliver J. Müller, Ming Lei, Xin Wang   +17 more
wiley   +1 more source

Maternal Exercise Rescues Embryonic Osteogenesis Impaired due to POLG Mutation Through a Potential Apelin‐ATF4 Axis

Advanced Science, EarlyView.
Maternal exercise (ME) increases apelin abundance across maternal and fetal tissues and is associated with improved fetal osteogenesis under POLG mutation‐induced mitochondrial dysfunction. Apelin‐APJ signaling is linked to enhanced mitochondrial function, Akt phosphorylation, and ATF4‐RUNX2 association, supporting coordinated fetal bone remodeling ...
Song Ah Chae, Ryan C. Riddle, Zhihua Jiang, Chaeyoung Shin, Min Du, Jun Seok Son   +5 more
wiley   +1 more source

Xanthohumol inhibits extracellular matrix degradation via the Nrf2/PERK/ATF4/C/EBPβ pathway in osteoarthritis

Türk Biyokimya Dergisi
This study aims to explore the therapeutic potential of Xanthohumol (XH) in mitigating osteoarthritis (OA) progression by inhibiting extracellular matrix (ECM) degradation.
Zheng Tiansheng, Niu Shuo, Zhou Qingluo, Huang Jishang, Yi Jun, Mei Runhong, Yu Xuefeng   +6 more
doaj   +1 more source

Polystyrene Nanoplastics Drive β‐Cell Dedifferentiation Through Dendritic Cell‐Intrinsic MHC‐I‐Dependent Inflammatory Crosstalk

Advanced Science, EarlyView.
Polystyrene nanoplastics disrupt pancreatic immune–endocrine homeostasis by promoting MHC‐I‐associated dendritic cell activation and inflammatory crosstalk with β cells. This immune remodeling drives β‐cell dedifferentiation, impairs insulin secretion, and aggravates metabolic dysfunction, revealing a previously unrecognized immunometabolic mechanism ...
Conghui Qiao, Yuqing Song, Fang Yang, Menghui Guo, Libin Jiang, Xiaoyue Quan, Wei Wei, Xinyang Wang, Tianshu Han, Mingyuan Liu, Wenbo Jiang   +10 more
wiley   +1 more source

Activating transcription factor 4 (ATF4) is upregulated by human herpesvirus 8 infection, increases virus replication and promotes proangiogenic properties

, 2012
Human herpesvirus 8 (HHV-8) triggers proangiogenic behaviour in endothelial cells by inducing monocyte chemoattractant protein 1 (MCP-1) through activation of Nuclear Factor κB (NF-κB).
CARUSO, Arnaldo, Di Luca D., Grigolato J, Caselli E, Benedetti S   +4 more
core   +1 more source