Article
Multidisciplinary Sciences
Qian Zhu, Qiaoyan Yang, Xiaopeng Lu, Hui Wang, Lili Tong, Zheng Li, Ge Liu, Yantao Bao, Xingzhi Xu, Luo Gu, Jian Yuan, Xiangyu Liu, Wei-Guo Zhu
Summary: The study found that H3K14 trimethylation enhances ATR activation by recruiting the RPA complex to chromatin, thus facilitating the response to replication stress. Increased levels of H3K14me3 make cells more sensitive to replication stress, affecting cell cycle progression.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Cell Biology
Yang Wang, Tianyu Yu, Yi Han, Yazhi He, Yiran Song, Leiming Guo, Liwei An, Chunying Yang, Feng Wang
Summary: This study reveals the key regulatory role of Mad2 phosphorylation in checkpoint defects and DNA damage repair in ATM-deficient cells. ATM negatively regulates the phosphorylation of Mad2, causing decreased DNA damage repair capacity and resistance to cancer cell radiotherapy.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Article
Multidisciplinary Sciences
Tom Egger, Benoit Bordignon, Arnaud Coquelle
Summary: Colorectal cancer is a common malignancy and its therapy often causes replication stress. The ATR-CHK1 pathway is responsible for managing this stress, and mutations in the ATR gene can increase sensitivity to drugs and enhance their synergy. These mutations lead to DNA damage, but targeting RPA and DNA-PK can optimize inhibition of the ATR-CHK1 pathway.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Silvia Hormeno, Oliver J. Wilkinson, Clara Aicart-Ramos, Sahiti Kuppa, Edwin Antony, Mark S. Dillingham, Fernando Moreno-Herrero
Summary: Human DNA helicase B (HELB) plays important regulatory roles in DNA replication and recombination. It interacts with Replication Protein A (RPA) and RPA-single-stranded DNA (ssDNA) filaments to exhibit ATP hydrolysis translocation and helicase activities, and its ability to clear RPA from ssDNA allows other proteins to access these intermediates.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Janna Luessing, Chituru C. Okowa, Emer Brennan, Muriel Voisin, Noel F. Lowndes
Summary: This study reveals a cell cycle-specific role of ATR in abscission, which is important for genome stability. ATR and ATRIP localize to the midbody during late cytokinesis and regulate abscission independently of RPA or detectable ssDNA. The regulation of abscission by ATR requires the presence of CHMP4C, CDC7 kinase, and ETAA1.
Article
Multidisciplinary Sciences
Valdemaras Petrosius, Jan Benada, Olaf Nielsen, Erwin M. Schoof, Claus Storgaard Sorensen
Summary: Wee1-like protein kinase (WEE1) inhibits cyclin-dependent kinases (CDKs) to regulate cell cycle, and its inhibitors show potential for cancer treatment. In this study, acute changes in the phosphoproteome following WEE1 inhibition were identified, revealing over 600 potentially unknown CDK sites. Furthermore, WEE1 was found to control CDK-dependent phosphorylation of key DNA repair factors and fine-tune CDK activities. These findings provide insights into WEE1-controlled targets and pathways for the development of WEE1 inhibitors in clinical applications.
Article
Genetics & Heredity
Seong Min Kim, Susan L. Forsburg
Summary: Under replication stress, the accumulation and translocation of RPA to the nuclear periphery is mediated by resection and repair processes and the chromatin remodeler Swr1/Ino80. This concentrated accumulation of RPA increases the recruitment of Cds1 to chromatin and results in aberrant cell cycle.
G3-GENES GENOMES GENETICS
(2022)
Article
Multidisciplinary Sciences
Luke A. Yates, Elias A. Tannous, R. Marc Morgan, Peter M. Burgers, Xiaodong Zhang
Summary: This study reveals the phosphorylation circuit that regulates checkpoint recruitment and function in response to DNA damage. The interaction between Ddc2 and RPA modulates the association between RPA and ssDNA, and phosphorylated Ddc2 enhances its recruitment to RPA-ssDNA, promoting DNA damage checkpoint signaling.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Review
Oncology
Congqi Shi, Kaiyu Qin, Anqi Lin, Aimin Jiang, Quan Cheng, Zaoqu Liu, Jian Zhang, Peng Luo
Summary: This study summarizes currently identified and promising biomarkers for predicting the response of oncology patients to immune checkpoint inhibitors, and explores the mechanism of combination therapy with immune checkpoint inhibitors and DNA damage repair inhibitors.
JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Yandong Yin, Wei Ting, Chelsea Lee, Dipika Gupta, Tony T. Huang, Mauro Modesti, Eli Rothenberg, Yandong Yin, Wei Ting Chelsea Lee
Summary: A study conducted using advanced microscopy techniques discovered that ATR plays a crucial role in monitoring and regulating the amounts of RPA at forks during unperturbed replication and replication stress. Replication stress amplifies the basal activity of ATR by increasing the ATR-RPA interaction and enrichment of ATR at specific sites, ultimately enhancing its activation and replication stress response.
Article
Oncology
Nicola Lockwood, Silvia Martini, Ainara Lopez-Pardo, Katharina Deiss, Hendrika A. Segeren, Robert K. Semple, Ian Collins, Dimitra Repana, Mathias Cobbaut, Tanya Soliman, Francesca Ciccarelli, Peter J. Parker
Summary: G2 arrest is crucial for the faithful segregation of sister chromatids, and the p53-p21 signaling pathway plays an essential role in cell lines, patient-derived cells, and colorectal cancer organoids. In arrest-defective hTERT-positive cells, the PKC epsilon failsafe mechanism is engaged. In ALT-dependent cancer cells, a distinct form of p53-independent G2 arrest is mediated by BLM and Chk1.
Article
Immunology
Mu Chen, Bingsong Huang, Lei Zhu, Qi Wang, Ying Pang, Meng Cheng, Hao Lian, Min Liu, Kaijun Zhao, Siyi Xu, Jing Zhang, Chunlong Zhong
Summary: This study highlights the promising prognostic role of DDR score in glioma and its potential as an independent predictive biomarker. Glioma with high DDR scores exhibits increased immune activity and metabolic processes, indicating a close relationship with immunogenicity. In addition, PD-L1 and TGF beta are overexpressed in recurrent glioma.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Camilla Frattini, Alexy Promonet, Emile Alghoul, Sophie Vidal-Eychenie, Marie Lamarque, Marie-Pierre Blanchard, Serge Urbach, Jihane Basbous, Angelos Constantinou
Summary: The study reveals that TopBP1 self-assembles into functional condensates, which amplify ATR activity and slow down DNA replication. These condensates are reversible in physiological conditions and co-localize with partner proteins.
Article
Biochemistry & Molecular Biology
Thomas Eekhout, Jose Antonio Pedroza-Garcia, Pooneh Kalhorzadeh, Geert De Jaeger, Lieven De Veylder
Summary: During DNA replication, the WEE1 kinase inhibits cyclin-dependent kinases (CDKs) to safeguard genomic integrity. Wee1 mutant plants are hypersensitive to replication stress due to their inability to respond properly to DNA replication problems. The pol alpha-2 mutant, with a mutated catalytic subunit of DNA polymerase alpha, acts as a suppressor mutant of wee1 by causing instability and interaction loss, leading to a prolonged S-phase.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Microbiology
Kang Ning, Cagla Aksu Kuz, Fang Cheng, Zehua Feng, Ziying Yan, Jianming Qiu
Summary: This study demonstrates the significant role of Pol eta and Pol kappa in AAV DNA replication and rAAV production in HEK293T cells. Understanding the AAV DNA replication mechanism in HEK293T cells could help increase rAAV vector yield produced from the transfection method. The findings also provide insights into the ATR-mediated DNA repair process, which contributes to AAV genome amplification.
Article
Pathology
Alamelu G. Bharadwaj, Joy L. Kovar, Eileen Loughman, Christian Elowsky, Gregory G. Oakley, Melanie A. Simpson
AMERICAN JOURNAL OF PATHOLOGY
(2009)
Article
Biochemistry & Molecular Biology
Xiaoyi Deng, Aishwarya Prakash, Kajari Dhar, Gilson S. Baia, Carol Kolar, Greg G. Oakley, Gloria E. O. Borgstahl
Article
Biochemistry & Molecular Biology
Greg G. Oakley, Kristin Tillison, Stephen A. Opiyo, Jason G. Glanzer, Jeffrey M. Horn, Steve M. Patrick
Article
Biochemistry & Molecular Biology
Jason G. Glanzer, Shengqin Liu, Gregory G. Oakley
BIOORGANIC & MEDICINAL CHEMISTRY
(2011)
Article
Oncology
Alamelu G. Bharadwaj, Nathaniel P. Goodrich, Caitlin O. McAtee, Katie Haferbier, Gregory G. Oakley, James K. Wahl, Melanie A. Simpson
EXPERIMENTAL CELL RESEARCH
(2011)
Article
Otorhinolaryngology
Karoline C. Manthey, Jason G. Glanzer, Diana D. Dimitrova, Greg G. Oakley
HEAD AND NECK-JOURNAL FOR THE SCIENCES AND SPECIALTIES OF THE HEAD AND NECK
(2010)
Article
Gastroenterology & Hepatology
Namal P. M. Liyanage, Karoline C. Manthey, Rohana P. Dassanayake, Charles A. Kuszynski, Gregory G. Oakley, Gerald E. Duhamel
Article
Biochemistry & Molecular Biology
Xiujuan Zhu, Ferhat Ozturk, ChangChih Liu, Gregory G. Oakley, Ali Nawshad
JOURNAL OF CELLULAR BIOCHEMISTRY
(2012)
Article
Oncology
Ling Wang, Adam J. Mosel, Gregory G. Oakley, Aimin Peng
MOLECULAR CANCER THERAPEUTICS
(2012)
Article
Biochemistry & Molecular Biology
Jason G. Glanzer, Katie A. Carnes, Patricia Soto, Shengqin Liu, Lawrence J. Parkhurst, Gregory G. Oakley
NUCLEIC ACIDS RESEARCH
(2013)
Article
Biochemistry & Molecular Biology
Shengqin Liu, Stephen O. Opiyo, Karoline Manthey, Jason G. Glanzer, Amanda K. Ashley, Courtney Amerin, Kyle Troksa, Meena Shrivastav, Jac A. Nickoloff, Greg G. Oakley
NUCLEIC ACIDS RESEARCH
(2012)
Article
Cell Biology
Karoline C. Manthey, Stephen Opiyo, Jason G. Glanzer, Diana Dimitrova, James Elliott, Gregory G. Oakley
JOURNAL OF CELL SCIENCE
(2007)
Article
Genetics & Heredity
S Cruet-Hennequart, S Coyne, MT Glynn, GG Oakley, MP Carty
Article
Biochemistry & Molecular Biology
JE Nuss, SM Patrick, GG Oakley, GM Alter, JG Robison, K Dixon, JJ Turchi