1
|
Tiwari V, Buvarp E, Borbolis F, Puligilla C, Croteau DL, Palikaras K, Bohr VA. Loss of DNA glycosylases improves health and cognitive function in a C. elegans model of human tauopathy. Nucleic Acids Res 2024:gkae705. [PMID: 39149885 DOI: 10.1093/nar/gkae705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/20/2024] [Accepted: 08/11/2024] [Indexed: 08/17/2024] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder representing a major burden on families and society. Some of the main pathological hallmarks of AD are the accumulation of amyloid plaques (Aβ) and tau neurofibrillary tangles. However, it is still unclear how Aβ and tau aggregates promote specific phenotypic outcomes and lead to excessive oxidative DNA damage, neuronal cell death and eventually to loss of memory. Here we utilized a Caenorhabditis elegans (C. elegans) model of human tauopathy to investigate the role of DNA glycosylases in disease development and progression. Transgenic nematodes expressing a pro-aggregate form of tau displayed altered mitochondrial content, decreased lifespan, and cognitive dysfunction. Genetic ablation of either of the two DNA glycosylases found in C. elegans, NTH-1 and UNG-1, improved mitochondrial function, lifespan, and memory impairment. NTH-1 depletion resulted in a dramatic increase of differentially expressed genes, which was not apparent in UNG-1 deficient nematodes. Our findings clearly show that in addition to its enzymatic activity, NTH-1 has non-canonical functions highlighting its modulation as a potential therapeutic intervention to tackle tau-mediated pathology.
Collapse
Affiliation(s)
- Vinod Tiwari
- Section on DNA Repair, National Institute on Aging, Baltimore, MD 21224, USA
| | - Elisabeth Buvarp
- Section on DNA Repair, National Institute on Aging, Baltimore, MD 21224, USA
| | - Fivos Borbolis
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, 11527, Greece
| | - Chandrakala Puligilla
- Section for Telomere Maintenance, LGG, National Institute on Aging, Baltimore, MD 21224, USA
| | - Deborah L Croteau
- Section on DNA Repair, National Institute on Aging, Baltimore, MD 21224, USA
- Computational Biology & Genomics Core, LGG, NIA, Baltimore, MD 21224, USA
| | - Konstantinos Palikaras
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, 11527, Greece
| | - Vilhelm A Bohr
- Section on DNA Repair, National Institute on Aging, Baltimore, MD 21224, USA
- Center for Healthy Aging, University of Copenhagen, 2200 N, Denmark
| |
Collapse
|
2
|
Guo B, Hu C, Yang Z, Tang C, Zhang C, Wang F. Test strip coupled Cas12a-assisted signal amplification strategy for sensitive detection of uracil-DNA glycosylase. LAB ON A CHIP 2024; 24:1987-1995. [PMID: 38372397 DOI: 10.1039/d4lc00096j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Uracil-DNA glycosylase (UDG) is a base excision repair (BER) enzyme, which catalyzes the hydrolysis of uracil bases in DNA chains that contain uracil and N-glycosidic bonds of the sugar phosphate backbone. The expression of UDG enzyme is associated with a variety of genetic diseases including cancers. Hence, the identification of UDG activity in cellular processes holds immense importance for clinical investigation and diagnosis. In this study, we employed Cas12a protein and enzyme-assisted cycle amplification technology with a test strip to establish a precise platform for the detection of UDG enzyme. The designed platform enabled amplifying and releasing the target probe by reacting with the UDG enzyme. The amplified target probe can subsequently fuse with crRNA and Cas12a protein, stimulating the activation of the Cas12a protein to cleave the signal probe, ultimately generating a fluorescent signal. This technique showed the ability for evaluating UDG enzyme activity in different cell lysates. In addition, we have designed a detection probe to convert the fluorescence signal into test strip bands that can then be observed with the naked eye. Hence, our tool presented potential in both biomedical research and clinical diagnosis related to DNA repair enzymes.
Collapse
Affiliation(s)
- Bin Guo
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, China
| | - Chong Hu
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, China
| | - Zeping Yang
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, China
| | - Chu Tang
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, China
| | - Chuanxian Zhang
- Institute of Medical Engineering, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an 710061, China.
| | - Fu Wang
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an 710071, China
- Institute of Medical Engineering, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an 710061, China.
- Xianyang Key Laboratory of Molecular Imaging and Drug Synthesis, School of Pharmacy, Shaanxi Institute of International Trade & Commerce, Xianyang 712046, China
| |
Collapse
|
3
|
Bordin DL, Grooms K, Montaldo NP, Fordyce Martin SL, Sætrom P, Samson LD, Bjørås M, van Loon B. Loss of alkyladenine DNA glycosylase alters gene expression in the developing mouse brain and leads to reduced anxiety and improved memory. DNA Repair (Amst) 2024; 135:103632. [PMID: 38280242 DOI: 10.1016/j.dnarep.2024.103632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/05/2024] [Accepted: 01/19/2024] [Indexed: 01/29/2024]
Abstract
Neurodevelopment is a tightly coordinated process, during which the genome is exposed to spectra of endogenous agents at different stages of differentiation. Emerging evidence indicates that DNA damage is an important feature of developing brain, tightly linked to gene expression and neuronal activity. Some of the most frequent DNA damage includes changes to DNA bases, which are recognized by DNA glycosylases and repaired through base excision repair (BER) pathway. The only mammalian DNA glycosylase able to remove frequent alkylated DNA based is alkyladenine DNA glycosylase (Aag, aka Mpg). We recently demonstrated that, besides its role in DNA repair, AAG affects expression of neurodevelopmental genes in human cells. Aag was further proposed to act as reader of epigenetic marks, including 5-hydroxymethylcytosine (5hmC), in the mouse brain. Despite the potential Aag involvement in the key brain processes, the impact of Aag loss on developing brain remains unknown. Here, by using Aag knockout (Aag-/-) mice, we show that Aag absence leads to reduced DNA break levels, evident in lowered number of γH2AX foci in postnatal day 5 (P5) hippocampi. This is accompanied by changes in 5hmC signal intensity in different hippocampal regions. Transcriptome analysis of hippocampi and prefrontal cortex, at different developmental stages, indicates that lack of Aag alters gene expression, primarily of genes involved in regulation of response to stress. Across all developmental stages tested aldehyde dehydrogenase 2 (Aldh2) emerged as one of the most prominent genes deregulated in Aag-dependent manner. In line with the changes in hippocampal DNA damage levels and the gene expression, adult Aag-/- mice exhibit altered behavior, evident in decreased anxiety levels determined in the Elevated Zero Maze and increased alternations in the Elevated T Maze tests. Taken together these results suggests that Aag has functions in modulation of genome dynamics during brain development, important for animal behavior.
Collapse
Affiliation(s)
- Diana L Bordin
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, 7049 Trondheim, Norway
| | - Kayla Grooms
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, 7049 Trondheim, Norway
| | - Nicola P Montaldo
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, 7049 Trondheim, Norway; Department of Microbiology, Oslo University Hospital, University of Oslo, Oslo 0372, Norway
| | - Sarah L Fordyce Martin
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, 7049 Trondheim, Norway
| | - Pål Sætrom
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, 7049 Trondheim, Norway; Bioinformatics core facility - BioCore; Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; K.G. Jebsen Center for Genetic Epidemiology, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; Department of Computer Science, Faculty of Information Technology and Electrical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Leona D Samson
- Department of Biological Engineering, Department of Biology, David H. Koch Institute of integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Magnar Bjørås
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, 7049 Trondheim, Norway; Department of Microbiology, Oslo University Hospital, University of Oslo, Oslo 0372, Norway
| | - Barbara van Loon
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, 7049 Trondheim, Norway.
| |
Collapse
|
4
|
Liu M, Zhong N, Zhang L, Zhang Q, Tian X, Ma F, Zhang CY. Single probe-based catalytic quantum dot FRET nanosensor for human alkyladenine DNA glycosylase detection. Talanta 2024; 266:125089. [PMID: 37604071 DOI: 10.1016/j.talanta.2023.125089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/11/2023] [Accepted: 08/17/2023] [Indexed: 08/23/2023]
Abstract
Human alkyladenine DNA glycosylase (hAAG) is essential for repairing alkylated and deaminated bases, and it has become a prospective diagnosis biomarker and a therapeutic target for disease treatment. However, most of hAAG assays suffer from complicated reaction scheme, poor specificity, long assay time, and limited sensitivity. Herein, we report a novel single probe-based catalytic quantum dot (QD) Förster resonance energy transfer (FRET) nanosensor for simple and sensitive detection of hAAG activity. In this assay, hAAG induces the generation of 3' OH terminus via the excision of I base and the cleavage of AP site by APE1, subsequently initiating strand displacement reaction to produce numerous ssDNA signal probes. These probes can self-assemble on the QD surface to induce efficient FRET between QD and Cy5. This assay is very simple with the involvement of only a single probe for the achievement of both specific sensing and efficient signal amplification. Moreover, each signal probe contains multiple Cy5 moieties, and multiple signal probes can assemble on a single QD to greatly enhance the FRET efficiency. This nanosensor exhibits a detection limit of 3.60 × 10-10 U/μL and it is suitable for measuring enzymatic kinetics, screening inhibitor, and quantifying cellular hAAG activity with single-cell sensitivity.
Collapse
Affiliation(s)
- Meng Liu
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China
| | - Nan Zhong
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China
| | - Lingfei Zhang
- Center for Disease Control and Prevention of Weihai City, Weihai, 264200, China
| | - Qian Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China
| | - Xiaorui Tian
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China
| | - Fei Ma
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| | - Chun-Yang Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China; School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
| |
Collapse
|
5
|
Lai HH, Hung LY, Yen CJ, Hung HC, Chen RY, Ku YC, Lo HT, Tsai HW, Lee YP, Yang TH, Chen YY, Huang YS, Huang W. NEIL3 promotes hepatoma epithelial-mesenchymal transition by activating the BRAF/MEK/ERK/TWIST signaling pathway. J Pathol 2022; 258:339-352. [PMID: 36181299 DOI: 10.1002/path.6001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/20/2022] [Accepted: 08/15/2022] [Indexed: 01/19/2023]
Abstract
Hepatocellular carcinoma (HCC) is among the most prevalent visceral neoplasms. So far, reliable biomarkers for predicting HCC recurrence in patients undergoing surgery are far from adequate. In the aim of searching for genetic biomarkers involved in HCC development, we performed analyses of cDNA microarrays and found that the DNA repair gene NEIL3 was remarkably overexpressed in tumors. NEIL3 belongs to the Fpg/Nei protein superfamily, which contains DNA glycosylase activity required for the base excision repair for DNA lesions. Notably, the other Fpg/Nei family proteins NEIL1 and NEIL2, which have the same glycosylase activity as NEIL3, were not elevated in HCC; NEIL3 was specifically induced to participate in HCC development independently of its glycosylase activity. Using RNA-seq and invasion/migration assays, we found that NEIL3 elevated the expression of epithelial-mesenchymal transition (EMT) factors, including the E/N-cadherin switch and the transcription of MMP genes, and promoted the invasion, migration, and stemness phenotypes of HCC cells. Moreover, NEIL3 directly interacted with the key EMT player TWIST1 to enhance invasion and migration activities. In mouse orthotopic HCC studies, NEIL3 overexpression also caused a prominent E-cadherin decrease, tumor volume increase, and lung metastasis, indicating that NEIL3 led to EMT and tumor metastasis in mice. We further found that NEIL3 induced the transcription of MDR1 (ABCB1) and BRAF genes through the canonical E-box (CANNTG) promoter region, which the TWIST1 transcription factor recognizes and binds to, leading to the BRAF/MEK/ERK pathway-mediated cell proliferation as well as anti-cancer drug resistance, respectively. In the HCC cohort, the tumor NEIL3 level demonstrated a high positive correlation with disease-free and overall survival after surgery. In conclusion, NEIL3 activated the BRAF/MEK/ERK/TWIST pathway-mediated EMT and therapeutic resistances, leading to HCC progression. Targeted inhibition of NEIL3 in HCC individuals with NEIL3 induction is a promising therapeutic approach. © 2022 The Pathological Society of Great Britain and Ireland.
Collapse
Affiliation(s)
- Hui-Huang Lai
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Liang-Yi Hung
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan.,Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Jui Yen
- Division of Hematology and Oncology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hsu-Chin Hung
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ruo-Yu Chen
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Chao Ku
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hang-Tat Lo
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hung-Wen Tsai
- Department of Pathology, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Yun-Ping Lee
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Tz-Hsuan Yang
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yen-Yu Chen
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Shuian Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Wenya Huang
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan.,Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan
| |
Collapse
|