Results 51 to 60 of about 26,946 (260)

Single‐Cell Reveal GALNT7‐Dependent Ferroptosis Suppression as a Mechanism of Immunotherapy Resistance in Non‐Small Cell Lung Cancer

Advanced Science, EarlyView.
Integrated clinical and mechanistic analyses identify GALNT7 as a ferroptosis‐suppressive regulator associated with immunotherapy resistance in non‐small cell lung cancer. GALNT7 depletion promotes lipid peroxidation, mitochondrial dysfunction, and ferroptosis, enhances CD8+ T‐cell activation and IFN‐γ production, and sensitizes tumors to PD‐1 blockade,
Jiadi Gan, Qian Zheng, Deng Liu, Ruichao Nie, Menglin Yao, Xiaolong Tang, Renjie Xu, Jinghong Xian, Wenjun Meng, Wenxin Luo, Dan Liu, Guiyi Ji   +11 more
wiley   +1 more source

The protective role of GPX4 in naïve ESCs is highlighted by induced ferroptosis resistance through GPX4 expression

Redox Biology
Ferroptosis, a form of oxidative cell death mediated by lipid peroxidation, is strictly regulated by glutathione peroxidase 4 (GPX4). Knockout of Gpx4 results in embryonic lethality, highlighting its essential role in development. In vitro, mouse embryonic stem cells (mESCs), which represent the naïve pluripotent state, require β-mercaptoethanol (bME ...
Seokwoo Park, Mihn Jeong Park, Eun-Ji Kwon, Ji-Young Oh, Yeon-Joon Chu, Han Sun Kim, Sunghyouk Park, Tae Ha Kim, Sung Won Kwon, Yon Su Kim, Hyuk-Jin Cha   +10 more
openaire   +3 more sources

Tumor Microenvironment‐Responsive Nanoreactor Induces Disulfidptosis in Pancreatic Cancer via Metabolic Interference and Redox Catalysis

Advanced Science, EarlyView.
Schematic illustration of a tumor microenvironment‐responsive nanoreactor for imaging‐guided induction of disulfidptosis in pancreatic cancer via metabolic interference and redox catalysis. (A) Stepwise fabrication of Pht@HMnO2‐HA, including MnO2 growth on a SiO2 template, template removal to form hollow mesoporous MnO2, Pht loading, and subsequent ...
Rui Fu, Qing Li, Guanzhong Zhao, Qingyan Gao, Huantong Chen, Khemayanto Hidayat, Jiaying Xu, Liqiang Qin, Chunhong Hu, Yu Chong, Su Hu   +10 more
wiley   +1 more source

DHODH Drives Sunitinib Resistance Via a Non‐Enzymatic Mechanism by Inhibiting TRIM28 Ubiquitination and Consequent VEGFA Activation in RCC

Advanced Science, EarlyView.
This non‑enzymatic function of DHODH drives sunitinib resistance by competing with TRIM37 to block TRIM28 ubiquitination, thereby stabilizing TRIM28 and activating VEGFA transcription. Disrupting the DHODH–TRIM28 interaction with lisaftoclax restores drug sensitivity.
Shijie Qian, Shihang Pu, Zhipeng Xu, Yiheng Ding, Ling Jin, Baochao Li, Qi Li, Xiaohai Xi, Zengjun Wang, Jiajun Xing, Aiming Xu   +10 more
wiley   +1 more source

Mechanism of Dendrobium Nobile Polysaccharide Inhibition of Ferroptosis in Rats with Spinal Cord Injury

Journal of Integrative Neuroscience
Background: It has been reported that ferroptosis participates in the pathophysiological mechanism of spinal cord injury (SCI). Our preliminary experiments verified that dendrobium nobile polysaccharide (DNP) improved the behavioral function of SCI rats.
Jian Huang, Jianghong Luo, Ying Huang, Linghong Wang, Haibing Zhu, Zhengnan Li, Jianping Chen   +6 more
doaj   +1 more source

Role of GPX4-Mediated Ferroptosis in the Sensitivity of Triple Negative Breast Cancer Cells to Gefitinib

Frontiers in Oncology, 2020
Gefitinib resistance in triple negative breast cancer (TNBC) is a growing important concern. Glutathione peroxidase 4 (GPX4) is a main regulator of ferroptosis, which is pivotal for TNBC cell growth. We investigated GPX4-mediated ferroptosis in gefitinib
Xiang Song, Xinzhao Wang, Zhaoyun Liu, Zhiyong Yu   +3 more
doaj   +1 more source

Targeting GPX4 to Induce Ferroptosis Overcomes Chemoresistance Mediated by the PAX8‐AS1 /GPX4 Axis in Intrahepatic Cholangiocarcinoma

Advanced Science
Abstract The standard regimen of gemcitabine combined with cisplatin offers limited clinical benefits in the treatment of advanced intrahepatic cholangiocarcinoma (ICC) due to intrinsic or acquired resistance. Currently, effective biomarkers to predict and improve chemotherapy resistance in ICC are lacking.
Zhi‐Wen Chen, Ji‐Jun Shan, Mo Chen, Zong Wu, Yi‐Ming Zhao, Hong‐Xu Zhu, Xin Jin, Yi‐Xiu Wang, Yi‐Bin Wu, Zhen Xiang, Zhi‐Wen Ding, Zhen‐Hai Lin, Long‐Rong Wang, Lu Wang   +13 more
openaire   +2 more sources

Functional Suppression of SCAP Triggers Endoplasmic Reticulum Stress‐Dependent Ferroptosis by Impairing Cholesterol Metabolism in Gastric Cancer

Advanced Science, EarlyView.
This study reveals a novel GC therapy targeting cholesterol homeostasis. Inhibiting the SCAP sterol‐sensing domain causes lethal ER stress via cholesterol accumulation, paradoxically forcing continuous synthesis that triggers ferroptosis. The findings link sterol sensing, metabolic dysregulation, and ferroptosis, establishing an anti‐cancer paradigm ...
Qianqian Xu, Guangzhao Pan, Lele Zhang, Xiangliu Chen, Kui Zhang, Yang Lu, Zibo Duan, Aiping Chen, Hailong Shen, Yuxi Zhang, Xiaowu Dong, Jinzhou Huang, Xing Huang, Kai Miao, Qian Hua, Fangfang Tao, Weidong Zhang, Jiang‐Jiang Qin   +17 more
wiley   +1 more source

Effects of gpx4 Haploid Insufficiency on GPx4 Activity, Selenium Concentration, and Paraquat-Induced Protein Oxidation in Murine Tissues

Experimental Biology and Medicine, 2005
Selenium-dependent glutathione peroxidase-4 (GPx4) catalyzes the reduction of phospholipid hydroperoxides. Because a full gpx4 knockout is embryonic lethal, we examined the effect of deletion of one copy of gpx4 on the activities of three selenoperoxidases (GPx1, GPx3, and GPx4), selenium concentrations, and pro-oxidant-induced protein oxidation in ...
Michael S, Scimeca, Donald J, Lisk, Tomas, Prolla, Xin Gen, Lei   +3 more
openaire   +2 more sources

REGγ Suppresses Ferroptosis and Induces Drug Resistance by Degrading WDR6 in Chondrosarcoma

Advanced Science, EarlyView.
Here, we identified REGγ as a susceptibility factor in chondrosarcoma. Our study demonstrates that abnormally activated REGγ‐20S proteasome promotes chondrosarcoma development and progression. Further validation in animal models revealed that blocking REGγ function induced ferroptosis, suppressed malignant progression of chondrosarcoma, and uncovered a
Fanrong Liu, Shihui Shen, Dongxia Li, Peilin Shi, Jiaming Xu, Tongxin Lv, Yingying Du, Jingwei Zhang, Bo Yang, Hansen Chen, Zhuoya Peng, Wenjie Ren, Lu Zhang, Sheng Cheng, Tongjin Yin, Wencai Sheng, Lei Li, Juan Wu, Qingcheng Yang, Shuogui Xu, Wei Zheng   +20 more
wiley   +1 more source