Results 141 to 150 of about 2,766,615 (303)

Epigenetic MLH1 silencing concurs with mismatch repair deficiency in sporadic, naturally occurring colorectal cancer in rhesus macaques

Journal of Translational Medicine
Background Naturally occurring colorectal cancers (CRC) in rhesus macaques share many features with their human counterparts and are useful models for cancer immunotherapy; but mechanistic data are lacking regarding the comparative molecular pathogenesis
Simon Deycmar, Brendan J. Johnson, Karina Ray, George W. Schaaf, Declan Patrick Ryan, Cassandra Cullin, Brandy L. Dozier, Betsy Ferguson, Benjamin N. Bimber, John D. Olson, David L. Caudell, Christopher T. Whitlow, Kiran Kumar Solingapuram Sai, Emily C. Romero, Francois J. Villinger, Armando G. Burgos, Hannah C. Ainsworth, Lance D. Miller, Gregory A. Hawkins, Jeff W. Chou, Bruno Gomes, Michael Hettich, Maurizio Ceppi, Jehad Charo, J. Mark Cline   +24 more
doaj   +1 more source

Mitochondrial Calcium Uniporter Drives Chemoresistance in Pancreatic Cancer via Glutathione‐Mediated Stemness Maintenance

Advanced Science, EarlyView.
PDAC has a poor prognosis due to chemoresistance. We revealed that MCU upregulation is associated with chemoresistance and stemness in PDAC. MCU‐mediated Ca2+ influx induced ER stress, activating the PERK‐ATF4/NRF2 axis to enhance PSAT1/SLC711 expression and glutathione synthesis, reducing ROS and maintaining stemness.
Zekun Li, Chenyang Meng, Guangcong Shen, Yueying Shan, Junjin Wang, Diliyaer Abudukeremu, Rui Zhao, Bo Ni, Chao Xu, Xiaofan Guo, Jun Yu, Kaiyuan Wang, Shengyu Yang, YunZhan Li, Yongjie Xie, Tianxing Zhou, Jihui Hao, Xiuchao Wang   +17 more
wiley   +1 more source

Topological DNA damage, telomere attrition and T cell senescence during chronic viral infections

Immunity & Ageing, 2019
Background T cells play a key role in controlling viral infections; however, the underlying mechanisms regulating their functions during human viral infections remain incompletely understood.
Yingjie Ji, Xindi Dang, Lam Ngoc Thao Nguyen, Lam Nhat Nguyen, Juan Zhao, Dechao Cao, Sushant Khanal, Madison Schank, Xiao Y. Wu, Zheng D. Morrison, Yue Zou, Mohamed El Gazzar, Shunbin Ning, Ling Wang, Jonathan P. Moorman, Zhi Q. Yao   +15 more
doaj   +1 more source

Two type I topoisomerases maintain DNA topology in human mitochondria. [PDF]

Nucleic Acids Res, 2022
Menger KE, Chapman J, Chapman J, Díaz-Maldonado H, Khazeem MM, Deen D, Erdinc D, Casement JW, Di Leo V, Pyle A, Rodríguez-Luis A, Cowell IG, Falkenberg M, Austin CA, Nicholls TJ.   +14 more
europepmc   +1 more source

Chromatin Topology Reconfiguration Orchestrates Thermotolerant Male Fertility via GhAL5 in Cotton

Advanced Science, EarlyView.
This study investigates cotton’s high‐temperature (HT) response using multi‑omics. Dynamic 3D genome changes drive expression bias affecting male fertility. The tolerant line shows controlled chromatin dynamics, while the sensitive line exhibits overactivation.
Yanlong Li, Jing Yang, Weiran Wang, Chunyang Zuo, Liuling Pei, Yizan Ma, Rui Zhang, Yaru Fan, Huanhuan Ma, Yawei Li, Ruizhen Liu, Shuangxia Jin, Longfu Zhu, Jie Kong, Xianlong Zhang, Ling Min   +15 more
wiley   +1 more source

Endometrial Assembloid Model Reveals Endometrial Gland Development Regulation by Estradiol‐Driven WNT7B Suppression

Advanced Science, EarlyView.
This study developed a 3D endometrial assembloid model to study how uterine glands form and develop. They discovered key interactions between different cell types and identified WNT7B as a regulator controlled by estradiol‐mediated TGFβ1‐VDR interaction.
Xintong Li, Yanjie Guo, Jianlin Li, Yimeng Li, Leqian Lin, Hoi Kit Matthew Leung, Qingqing Zhang, Kai‐Fai Lee, Ka‐Wang Cheung, Ernest H. Y. Ng, William S. B. Yeung, Philip C. N. Chiu, Cheuk‐Lun Lee   +12 more
wiley   +1 more source

Reeling it in: how DNA topology drives loop extrusion by condensin. [PDF]

Nat Struct Mol Biol, 2022
Narducci DN, Hansen AS.
europepmc   +1 more source

Immune Predictors of Radiotherapy Outcomes in Cervical Cancer

Advanced Science, EarlyView.
This study reveals dynamic immune remodeling in cervical cancer following radiotherapy. Single‐cell analysis identifies the C3/C3AR1 axis as a central mediator of epithelial–myeloid crosstalk, whose inhibition reduces treatment efficacy in mice. Guided by these insights, the eight‐feature machine‐learning model: Cervical Cancer Radiotherapy Immune ...
Linghao Wang, Jie Zhu, Zequn Ding, Zhiyuan Xie, Xingchen Liu, Feihong Zhang, Xiaojun Liu, Yan Zhang, Haiyan Chen   +8 more
wiley   +1 more source

Wedelolactone, a Novel TLR2 Agonist, Promotes Neutrophil Differentiation and Ameliorates Neutropenia: A Multi‐Omics Approach to Unravel the Mechanism

Advanced Science, EarlyView.
Wedelolactone (WED), a natural TLR2 agonist, promotes neutrophil differentiation and enhances bactericidal function, offering a potential therapeutic strategy for neutropenia. Using a multi‐omics approach, this study reveals that WED activates the TLR2/MEK/ERK pathway, upregulating key transcription factors (PU.1, CEBPβ) to drive neutrophil development.
Long Wang, Zhichao Li, Tianci Hu, Qinyao Li, Linwei Zhang, Xinyue Mei, Xiao Qi, Sheng Liu, Weijie Kong, Jiesi Luo, Anguo Wu, Feihong Huang, Sirui Li, Shuang Dai, Chunxiang Zhang, Rong Li, Jianming Wu   +16 more
wiley   +1 more source

Chili pepper extracts, capsaicin, and dihydrocapsaicin as potential anticancer agents targeting topoisomerases

BMC Complementary Medicine and Therapies
DNA topoisomerases regulate conformational changes in DNA topology during normal cell growth, such as replication, transcription, recombination, and repair, and may be targeted for anticancer drugs.
Terézia Hudáková, Martina Šemeláková, Peter Očenáš, Mária Kožurková, Kristína Krochtová, Simona Sovová, Zuzana Tóthová, Zuzana Guľášová, Peter Popelka, Peter Solár   +9 more
doaj   +1 more source