Results 41 to 50 of about 23,537 (152)

Translation of viral mRNA without active eIF2: the case of picornaviruses. [PDF]

PLoS ONE, 2011
Previous work by several laboratories has established that translation of picornavirus RNA requires active eIF2α for translation in cell free systems or after transfection in culture cells.
Ewelina Welnowska, Miguel Angel Sanz, Natalia Redondo, Luis Carrasco   +3 more
doaj   +1 more source

SSR4 sustains Tertiary Lymphoid Structures by Regulation Quality Control of N‐linked Glycosylation During B‐cell Differentiation Into Plasmacyte in Colorectal Cancer

Advanced Science, EarlyView.
SSR4, a TRAP component induced in B cells, governs BAFFR N‐glycosylation via DDOST to sustain NF‐κB signaling, B‐cell differentiation, and TLS maturation. Its loss impairs anti‐tumor immunity, while overexpression improves antibody glycosylation and ADCC, revealing a critical regulator for cancer immunotherapy.
Wei Zhao, Youcai Zhao, Haiyang Li, Bowen Yang, Siyan Lu, Xueting Fu, Caixia Zhang, Yirong Chen, Xiaofeng Bian, Xinghua Ma, Xiaobing Yang, Bin Wang, Yuan Fang, Lulu Yang, Yelin Zhao, Shuli Zhao   +15 more
wiley   +1 more source

eIF2α phosphorylation is required to prevent hepatocyte death and liver fibrosis in mice challenged with a high fructose diet

Nutrition & Metabolism, 2017
Background Dietary fructose can rapidly cause fatty liver in animals through de novo lipogenesis (DNL) and contribute to the development and severity of nonalcoholic fatty liver disease (NAFLD).
Woo-Gyun Choi, Jaeseok Han, Ji-Hyeon Kim, Mi-Jeong Kim, Jae-Woo Park, Benbo Song, Hee-Jeong Cha, Hye-Seon Choi, Hun-Taeg Chung, In-Kyu Lee, Tae-Sik Park, Maria Hatzoglou, Hueng-Sik Choi, Hyun Ju Yoo, Randal J. Kaufman, Sung Hoon Back   +15 more
doaj   +1 more source

Cholesterol‐Mediated Metabolic‐mechanotransductive Crosstalk Orchestrates Castration Resistance in Prostate Cancer

Advanced Science, EarlyView.
Full androgen deprivation (FAD) induces paracrine cholesterol in prostate cancer that drives the polarization of cancer‐associated fibroblasts (CAFs) and subsequent elevated matrix stiffness. Matrix stiffness in turn potentiates tumor cell survival under FAD pressure via dual mechanotransductive activation of the IRE1α‐XBP1s stress‐response axis ...
Shaojie Liu, Chao Xu, Jun Jiang, Limin He, Yike Zhou, Zhengxuan Li, Yu Li, Keying Zhang, Fa Yang, Tong Lu, Hongtao Song, Hai Zhu, Zhihao Hu, Xiaolong Zhao, Kai Gan, Hongji Li, Bo Yang, Rui Zhang, Weihong Wen, Donghui Han, Weijun Qin   +20 more
wiley   +1 more source

Intrinsically Mitochondria‐Targeting Nanozyme via Coordination‐Assembly of Natural Quercetin for Cascade Antioxidant Therapy of Cerebral Ischemia‐Reperfusion Injury

Advanced Science, EarlyView.
This study uncovers that quercetin naturally targets mitochondria. By coordinating quercetin with Fe3+, we engineer an ultrasmall cascade nanozyme (MCN) with superoxide dismutase‐catalase activities. MCN crosses the damaged blood–brain barrier, scavenges mitochondrial ROS, prevents mitochondrial DNA leakage, and blocks the cGAS‐STING pathway, thereby ...
Wenxuan Zheng, Zhicheng Wang, Xin Zhou, Shuya Wang, Xiaojing Shi, Tingli Xiong, Ruishi Li, Yuting Lin, Zhen Chen, Jiawen Wei, Fei Li, Jinwen Ge, Kelong Ai, Chong Liu, Guiming Deng   +14 more
wiley   +1 more source

eIF2α kinases regulate development through the BzpR transcription factor in Dictyostelium discoideum. [PDF]

PLoS ONE, 2012
A major mechanism of translational regulation in response to a variety of stresses is mediated by phosphorylation of eIF2α to reduce delivery of initiator tRNAs to scanning ribosomes.
Charles K Singleton, Yanhua Xiong, Janet H Kirsten, Kelsey P Pendleton   +3 more
doaj   +1 more source

Inhibition of KDEL Receptors Remodels the Tumor Microenvironment for T Cell Independent Tumor Regression

Advanced Science, EarlyView.
Inhibition of KDELR2 in a small fraction of tumor cells generates sustainable immunogenic cell death conditions within the tumor microenvironment. These conditions promote the regression of tumors in a T cell independent manner. During regression, macrophages prime T cells that subsequently provide systemic protection against recurrence. The potency of
Shakti P Pattanayak, Hong Wang, Belinda Willard, Timothy A. Chan, William C Merrick, Zheng‐Rong Lu, Boaz Tirosh   +6 more
wiley   +1 more source

Limited Effects of an eIF2αS51A Allele on Neurological Impairments in the 5xFAD Mouse Model of Alzheimer’s Disease

Neural Plasticity, 2015
Alzheimer’s disease (AD) has been associated with increased phosphorylation of the translation initiation factor 2α (eIF2α) at serine 51. Increased phosphorylation of eIF2α alters translational control and may thereby have adverse effects on synaptic ...
Katharina Paesler, Kan Xie, Moritz M. Hettich, Magdalena E. Siwek, Devon P. Ryan, Susanne Schröder, Anna Papazoglou, Karl Broich, Ralf Müller, Astrid Trog, Alexander Garthe, Gerd Kempermann, Marco Weiergräber, Dan Ehninger   +13 more
doaj   +1 more source

A Critical Role of the mTOR/eIF2α Pathway in Hypoxia-Induced Pulmonary Hypertension. [PDF]

PLoS ONE, 2015
Enhanced proliferation of pulmonary arterial vascular smooth muscle cells (PASMCs) is a key pathological component of vascular remodeling in hypoxia-induced pulmonary hypertension (HPH). Mammalian targeting of rapamycin (mTOR) signaling has been shown to
Ai-ping Wang, Xiao-hui Li, Yong-mei Yang, Wen-qun Li, Wang Zhang, Chang-ping Hu, Zheng Zhang, Yuan-jian Li   +7 more
doaj   +1 more source

Slc44a2 Deficiency Unveils an IFN‐I–Dependent Feedback Control of pDC Egress

Advanced Science, EarlyView.
Working model of SLC44A2‐mediated maintenance of pDC homeostasis. This model illustrates two central mechanisms by which SLC44A2 regulates pDC homeostasis: (1) SLC44A2 limits IFN‐I production by exporting amino acids (T, N, Q), thereby preventing spontaneous pDC activation.
Ruiqun Chen, Tao Wu, Zhen Shi, Ravi Kumar Verma, Linlin Sheng, Lei Tao, Mingming Yang, Yuchen Wang, Conggang Zhang, Hao Fan, Li Wu, Ligong Chen   +11 more
wiley   +1 more source