Results 31 to 40 of about 23,537 (152)

Hyperosmotic stress‐induced redistribution of pre‐mRNA cleavage factor I subunits is associated with shifts in alternative polyadenylation

FEBS Open Bio, EarlyView.
Hyperosmotic stress triggers the relocation of the CFIm complex from the nucleus to the cytoplasm. This shift creates a nuclear ‘stoichiometric bottleneck’, limiting CFIm availability for mRNA processing. Consequently, specific mRNAs like NUDT21 and DICER1 undergo targeted 3′UTR shortening, demonstrating how spatial protein dynamics drive rapid ...
Hitomi Soumiya, Masatake Osawa, Hidefumi Fukumitsu   +2 more
wiley   +1 more source

Impact of eIF2α phosphorylation on the translational landscape of mouse embryonic stem cells

Cell Reports
Summary: The integrated stress response (ISR) is critical for cell survival under stress. In response to diverse environmental cues, eIF2α becomes phosphorylated, engendering a dramatic change in mRNA translation.
Mehdi Amiri, Stephen J. Kiniry, Anthony P. Possemato, Niaz Mahmood, Tayebeh Basiri, Catherine R. Dufour, Negar Tabatabaei, Qiyun Deng, Michael A. Bellucci, Keerthana Harwalkar, Matthew P. Stokes, Vincent Giguère, Randal J. Kaufman, Yojiro Yamanaka, Pavel V. Baranov, Soroush Tahmasebi, Nahum Sonenberg   +16 more
doaj   +1 more source

Cross Talk between eIF2α and eEF2 Phosphorylation Pathways Optimizes Translational Arrest in Response to Oxidative Stress

iScience, 2019
Summary: The cellular stress response triggers a cascade of events leading to transcriptional reprogramming and a transient inhibition of global protein synthesis, which is thought to be mediated by phosphorylation of eukaryotic initiation factor-2α ...
Marisa Sanchez, Yingying Lin, Chih-Cheng Yang, Philip McQuary, Alexandre Rosa Campos, Pedro Aza Blanc, Dieter A. Wolf   +6 more
doaj   +1 more source

Unraveling 4‐Phenylbutyrate's Therapeutic Role in SLC6A1 Disorders: Pharmacochaperoning Over HDAC Inhibition

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Variants in SLC6A1, encoding the GABA transporter 1 (GAT‐1), cause epilepsy, autism spectrum disorder, and developmental delay via loss of GABA uptake, impaired trafficking, and ER retention. We previously found that 4‐Phenylbutyrate (PBA), an FDA‐approved drug, restores GABA uptake and reduces seizures in SLC6A1‐related disorders ...
Melissa B. DeLeeuw, Karishma Randhave, Ekta Anand, Ziang (Debbie) Song, Wangzhen Shen, Jing‐Qiong Kang   +5 more
wiley   +1 more source

Translational control of auditory imprinting and structural plasticity by eIF2α

eLife, 2016
The formation of imprinted memories during a critical period is crucial for vital behaviors, including filial attachment. Yet, little is known about the underlying molecular mechanisms.
Gervasio Batista, Jennifer Leigh Johnson, Elena Dominguez, Mauro Costa-Mattioli, Jose L Pena   +4 more
doaj   +1 more source

HNRNPD Induces Radioresistance in Nasopharyngeal Carcinoma by Sequestering GRAMD4 mRNA in Stress Granules

Advanced Science, EarlyView.
HNRNPD promotes radioresistance in nasopharyngeal carcinoma by enhancing stress granule assembly and sequestering GRAMD4 mRNA. This suppresses GRAMD4 translation and inhibits mitochondrial apoptosis. Targeting the integrated stress response with ISRIB restores GRAMD4 expression and sensitizes tumors to radiotherapy, revealing a translational control ...
Yingzi Li, Tong Xiang, Yuanyuan Liu, Desheng Weng, Jingjing Zhao, Hao Chen, Yan Tang, Songzuo Xie, Hao Zhang, Jun Luo, Xinyi Yang, Qiuzhong Pan, Muping Di, Jianchuan Xia   +13 more
wiley   +1 more source

The role of PKR/eIF2α signaling pathway in prognosis of non-small cell lung cancer. [PDF]

PLoS ONE, 2011
In this study, we investigated whether PKR protein expression is correlated with mRNA levels and also evaluated molecular biomarkers that are associated with PKR, such as phosphorylated PKR (p-PKR) and phosphorylated eIF2α (p-eIF2α).We determined the ...
Yong He, Arlene M Correa, Maria Gabriela Raso, Wayne L Hofstetter, Bingliang Fang, Carmen Behrens, Jack A Roth, Yihong Zhou, Liping Yu, Ignacio I Wistuba, Stephen G Swisher, Apar Pataer   +11 more
doaj   +1 more source

Radiotherapy Enhances the Oncolytic Efficacy of the Novel Oncolytic Herpesvirus VG161 and Amplifies Its Antitumor Immunity in Breast Cancer

Advanced Science, EarlyView.
RT promotes VG161 replication in BC and its immunostimulatory transgenes expression, which is mediated by the upregulation of GADD34 and HVEM caused by RT. The combination therapy with VG161 and RT increases the abundances of tumor‐infiltrating lymphocytes and elicits potent systemic antitumor immunity, thereby effectively inhibiting local tumors and ...
Lijuan Lyu, Ming Yi, Ji Chen, Zeda Zhao, Ruocen Liao, Yingnan Wang, Shengtao Hu, Jun Ding, Ronghua Zhao, William Jia, Yinan Shen, Yongchang Wei, Kongming Wu, Zhijun Dai   +13 more
wiley   +1 more source

Caveolin‐1 Stabilizes SERCA2 to Counteract Acute Kidney Injury via Suppression of Ca2+‐Dependent Endoplasmic Reticulum Stress in Distal Tubules

Advanced Science, EarlyView.
In AKI, initial kidney injury upregulates the expression of Cav‐1, which subsequently binds to and stabilizes SERCA2 via its scaffolding domain and through deubiquitination, thereby regulating Ca2+ homeostasis and ER stress. Conversely, Cav‐1 deficiency accelerates SERCA2 degradation, triggering Ca2+ overload and ER stress, and ultimately exacerbating ...
Yan Zhang, Xin He, Hao Huang, Rong Lu, Xin Lv, Shenglan Li, Sijue Zou, Jiawei Cheng, Yiwei Xiong, Zhenghao Deng, Qiongjing Yuan, Yanyun Xie, Ling Huang, Jiaxi Pu, Shao Liu, Qianbin Li, Jie Meng, Huixiang Yang, Lijian Tao, Zhangzhe Peng   +19 more
wiley   +1 more source

A Catalytic Osmium Redox Couple Collapses Cancer Redox Balance

Advanced Science, EarlyView.
A stable Os(III)/Os(IV) redox couple is developed to disrupt the tumor cell redox balance by concurrently catalyzing ROS generation and GSH depletion. Osmium‐treated cells exhibit multiple cell death pathways, including apoptosis, ferroptosis, and immunogenic cell death.
Wan‐Qiong Huang, Tao Huang, Yiming Hao, Gui‐Feng Huang, Yi‐Lang Yan, Xin Fang, Ying Chen, Xiao‐Long Wei, Wai‐Lun Man, Wen‐Xiu Ni   +9 more
wiley   +1 more source