1
|
Fahrer J. Decoding the genetic program of micronucleus formation: linking chromosomal instability to human disease. Signal Transduct Target Ther 2024; 9:162. [PMID: 38877011 PMCID: PMC11178884 DOI: 10.1038/s41392-024-01869-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 04/30/2024] [Accepted: 05/06/2024] [Indexed: 06/16/2024] Open
Affiliation(s)
- Jörg Fahrer
- Division of Food Chemistry and Toxicology, Department of Chemistry, RPTU Kaiserslautern-Landau, 67663, Kaiserslautern, Germany.
| |
Collapse
|
2
|
Dhillon VS, Deo P, Fenech M. Low magnesium in conjunction with high homocysteine increases DNA damage in healthy middle aged Australians. Eur J Nutr 2024:10.1007/s00394-024-03449-0. [PMID: 38864865 DOI: 10.1007/s00394-024-03449-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 05/14/2024] [Indexed: 06/13/2024]
Abstract
PURPOSE Magnesium is one of the most common elements in the human body and plays an important role as a cofactor of enzymes required for DNA replication and repair and many other biochemical mechanisms including sensing and regulating one-carbon metabolism deficiencies. Low intake of magnesium can increase the risk of many diseases, in particular, chronic degenerative disorders. However, its role in prevention of DNA damage has not been studied fully in humans so far. Therefore, we tested the hypothesis that magnesium deficiency either on its own or in conjunction with high homocysteine (Hcy) induces DNA damage in vivo in humans. METHODS The present study was carried out in 172 healthy middle aged subjects from South Australia. Blood levels of magnesium, Hcy, folate and vitamin B12 were measured. Cytokinesis-Block Micronucleus cytome assay was performed to measure three DNA damage biomarkers: micronuclei (MN), nucleoplasmic bridges (NPBs) and nuclear buds (NBuds) in peripheral blood lymphocytes. RESULTS Data showed that magnesium and Hcy are significantly inversely correlated with each other (r = - 0.299, p < 0.0001). Furthermore, magnesium is positively correlated both with folate (p = 0.002) and vitamin B12 (p = 0.007). Magnesium is also significantly inversely correlated with MN (p < 0.0001) and NPB (p < 0.0001). Individuals with low magnesium and high Hcy exhibited significantly higher frequency of MN and NPBs compared to those with high magnesium and low Hcy (p < 0.0001). Furthermore, there was an interactive effect between these two factors as well in inducing MN (p = 0.01) and NPB (p = 0.048). CONCLUSIONS The results obtained in the present study indicate for the first time that low in vivo levels of magnesium either on its own or in the presence of high Hcy increases DNA damage as evident by higher frequencies of MN and NPBs.
Collapse
Affiliation(s)
- Varinderpal S Dhillon
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide, 5000, Australia.
| | - Permal Deo
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide, 5000, Australia
| | - Michael Fenech
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide, 5000, Australia
- Genome Health Foundation, North Brighton, 5048, Australia
| |
Collapse
|
3
|
Martins C, de Oliveira Galvão MF, Costa PM, Dreij K. Antagonistic effects of a COX1/2 inhibitor drug in human HepG2 cells exposed to an environmental carcinogen. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 108:104453. [PMID: 38642625 DOI: 10.1016/j.etap.2024.104453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024]
Abstract
Understanding interactions between legacy and emerging environmental contaminants has important implications for risk assessment, especially when mutagens and carcinogens are involved, whose critical effects are chronic and therefore difficult to predict. The current work aimed to investigate potential interactions between benzo[a]pyrene (B[a]P), a carcinogenic polycyclic aromatic hydrocarbon and legacy pollutant, and diclofenac (DFC), a non-steroidal anti-inflammatory drug and pollutant of emerging concern, and how DFC affects B[a]P toxicity. Exposure to binary mixtures of these chemicals resulted in substantially reduced cytotoxicity in human HepG2 cells compared to single-chemical exposures. Significant antagonistic effects were observed in response to high concentrations of B[a]P in combination with DFC at IC50 and ⅕ IC50. While additive effects were found for levels of intracellular reactive oxygen species, antagonistic mixture effects were observed for genotoxicity. B[a]P induced DNA strand breaks, γH2AX activation, and micronuclei formation at ½ IC50 concentrations or lower, whereas DFC induced only low levels of DNA strand breaks. Their mixture caused significantly lower levels of genotoxicity by all three endpoints compared to those expected based on concentration additivity. In addition, antagonistic mixture effects on CYP1 enzyme activity suggested that the observed reduced genotoxicity of B[a]P was due to its reduced metabolic activation as a result of enzymatic inhibition by DFC. Overall, the findings further support the growing concern that co-exposure to environmental toxicants and their non-additive interactions may be a confounding factor that should not be neglected in environmental and human health risk assessment.
Collapse
Affiliation(s)
- Carla Martins
- Associate Laboratory i4HB Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica 2819 516, Portugal; UCIBIO Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica 2819 516, Portugal; Unit of Biochemical Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, Stockholm SE-171 77, Sweden.
| | - Marcos Felipe de Oliveira Galvão
- Unit of Biochemical Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, Stockholm SE-171 77, Sweden
| | - Pedro M Costa
- Associate Laboratory i4HB Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica 2819 516, Portugal; UCIBIO Applied Molecular Biosciences Unit, Department of Life Sciences, NOVA School of Science and Technology, NOVA University of Lisbon, Caparica 2819 516, Portugal
| | - Kristian Dreij
- Unit of Biochemical Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, Stockholm SE-171 77, Sweden.
| |
Collapse
|
4
|
Bulbul SN, Mamur S, Yuzbasioglu D, Unal F. Safety assessment of high fructose corn syrup and fructose used as sweeteners in foods. Toxicol Mech Methods 2024; 34:584-595. [PMID: 38347751 DOI: 10.1080/15376516.2024.2318570] [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: 12/25/2023] [Accepted: 02/09/2024] [Indexed: 02/24/2024]
Abstract
High Fructose Corn Syrup (HFCS) and Fructose (FR) are widely used sweeteners in many foods and beverages. This study aimed at investigating the cytotoxic effects of HFCS (5%-30%) and FR (62.5-2000 μg/mL) using MTT assay in Human Hepatocellular Carcinoma (HepG2) cells, and genotoxic effects of using Chromosome Aberrations (CAs), Sister Chromatid Exchanges (SCEs), Micronuclei (MN) and comet assays in human lymphocytes. HFCS significantly reduced the cell viability in HepG2 cells at between 7.5% and 30% for 24 and 48 h. 30% HFCS caused a very significant toxic effect. FR had a cytotoxic effect in HepG2 cells at all treatments. However, as fructose concentration decreased, the cell viability decreased. HFCS (10%-20%) and FR (250-2000 μg/mL) decreased the mitotic index at higher concentrations. IC50 value was found to be a 15% for 48 h. IC50 value of FR was detected as 62.5 μg/mL for 24 h and 48 h. HFCS significantly increased CAs frequency at 15% and 20%. FR significantly increased the frequency of CAs at 250, 1000, and 2000 μg/mL for 48 h. Both sweeteners increased the frequency of SCEs at all concentrations. HFCS (15% and 20%) and FR (250, 1000, and 2000 μg/mL) induced MN frequency at higher concentrations. HFCS caused DNA damage in comet assay at 10% -30%. FR increased tail intensity and moment at 125-2000 μg/mL and tail length at 62.5, 250 and 500 μg/mL. Therefore, HFCS and FR are clearly seen to be cytotoxic and genotoxic, especially at higher concentrations.
Collapse
Affiliation(s)
- Sabire Nur Bulbul
- Department of Biology, Science Faculty, Gazi University, Ankara, Turkey
| | - Sevcan Mamur
- Department of Environmental Sciences, Graduate School of Natural and Applied Sciences, Gazi University, Ankara, Turkey
| | - Deniz Yuzbasioglu
- Department of Biology, Science Faculty, Gazi University, Ankara, Turkey
| | - Fatma Unal
- Department of Biology, Science Faculty, Gazi University, Ankara, Turkey
| |
Collapse
|
5
|
Arends T, Tsuchida H, Adeyemi RO, Tapscott SJ. DUX4-induced HSATII transcription causes KDM2A/B-PRC1 nuclear foci and impairs DNA damage response. J Cell Biol 2024; 223:e202303141. [PMID: 38451221 PMCID: PMC10919155 DOI: 10.1083/jcb.202303141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 11/02/2023] [Accepted: 02/01/2024] [Indexed: 03/08/2024] Open
Abstract
Polycomb repressive complexes regulate developmental gene programs, promote DNA damage repair, and mediate pericentromeric satellite repeat repression. Expression of pericentromeric satellite repeats has been implicated in several cancers and diseases, including facioscapulohumeral dystrophy (FSHD). Here, we show that DUX4-mediated transcription of HSATII regions causes nuclear foci formation of KDM2A/B-PRC1 complexes, resulting in a global loss of PRC1-mediated monoubiquitination of histone H2A. Loss of PRC1-ubiquitin signaling severely impacts DNA damage response. Our data implicate DUX4-activation of HSATII and sequestration of KDM2A/B-PRC1 complexes as a mechanism of regulating epigenetic and DNA repair pathways.
Collapse
Affiliation(s)
- Tessa Arends
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Hiroshi Tsuchida
- Basic Sciences Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Richard O. Adeyemi
- Basic Sciences Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Stephen J. Tapscott
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
- Department of Neurology, University of Washington, Seattle, WA, USA
| |
Collapse
|
6
|
Kirsch-Volders M, Mišík M, de Gerlache J. Tetraploidy as a metastable state towards malignant cell transformation within a systemic approach of cancer development. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 896:503764. [PMID: 38821671 DOI: 10.1016/j.mrgentox.2024.503764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/08/2024] [Accepted: 05/06/2024] [Indexed: 06/02/2024]
Abstract
Tetraploidy, a condition in which a cell has four homologous sets of chromosomes, may be a natural physiological condition or pathophysiological such as in cancer cells or stress induced tetraploidisation. Its contribution to cancer development is well known. However, among the many models proposed to explain the causes, mechanisms and steps of malignant cell transformation, only few integrate tetraploidization into a systemic multistep approach of carcinogenesis. Therefore, we will i) describe the molecular and cellular characteristics of tetraploidy; ii) assess the contribution of stress-induced tetraploidy in cancer development; iii) situate tetraploidy as a metastable state leading to cancer development in a systemic cell-centered approach; iiii) consider knowledge gaps and future perspectives. The available data shows that stress-induced tetraploidisation/polyploidisation leads to p53 stabilisation, cell cycle arrest, followed by cellular senescence or apoptosis, suppressing the proliferation of tetraploid cells. However, if tetraploid cells escape the G1-tetraploidy checkpoint, it may lead to uncontrolled proliferation of tetraploid cells, micronuclei induction, aneuploidy and deploidisation. In addition, tetraploidization favors 3D-chromatin changes and epigenetic effects. The combined effects of genetic and epigenetic changes allow the expression of oncogenic gene expression and cancer progression. Moreover, since micronuclei are inducing inflammation, which in turn may induce additional tetraploidization, tetraploidy-derived genetic instability leads to a carcinogenic vicious cycle. The concept that polyploid cells are metastable intermediates between diploidy and aneuploidy is not new. Metastability denotes an intermediate energetic state within a dynamic system other than the system's state at least energy. Considering in parallel the genetic/epigenetic changes and the probable entropy levels induced by stress-induced tetraploidisation provides a new systemic approach to describe cancer development.
Collapse
Affiliation(s)
- Micheline Kirsch-Volders
- Laboratory for Cell Genetics, Department Biology, Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Miroslav Mišík
- Center for Cancer Research, Medical University of Vienna, Borschkegasse 8a, Vienna 1090, Austria.
| | | |
Collapse
|
7
|
Ladeira C. The use of effect biomarkers in chemical mixtures risk assessment - Are they still important? MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 896:503768. [PMID: 38821670 DOI: 10.1016/j.mrgentox.2024.503768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/29/2024] [Accepted: 05/13/2024] [Indexed: 06/02/2024]
Abstract
Human epidemiological studies with biomarkers of effect play an invaluable role in identifying health effects with chemical exposures and in disease prevention. Effect biomarkers that measure genetic damage are potent tools to address the carcinogenic and/or mutagenic potential of chemical exposures, increasing confidence in regulatory risk assessment decision-making processes. The micronucleus (MN) test is recognized as one of the most successful and reliable assays to assess genotoxic events, which are associated with exposures that may cause cancer. To move towards the next generation risk assessment is crucial to establish bridges between standard approaches, new approach methodologies (NAMs) and tools for increase the mechanistically-based biological plausibility in human studies, such as the adverse outcome pathways (AOPs) framework. This paper aims to highlight the still active role of MN as biomarker of effect in the evolution and applicability of new methods and approaches in human risk assessment, with the positive consequence, that the new methods provide a deeper knowledge of the mechanistically-based biology of these endpoints.
Collapse
Affiliation(s)
- Carina Ladeira
- H&TRC, Health & Technology Research Center, ESTeSL-Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Lisbon 1990-096, Portugal; NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, Lisbon, Portugal; Comprehensive Health Research Center (CHRC), Lisbon, Portugal.
| |
Collapse
|
8
|
Elgenidy A, Odat RM, Al-Ghorbany HA, Shahin HN, Abdel-Bary IS, AbdulHamid RA, Dhahab A, Salem M, Negm YA, El Attar NM, Abdelfattah AA, Khaliel MM, Moawad SM, Afifi AM. Arsenic's shadowy influence: A systematic review of its carcinogenic role in gallbladder cancer. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2024. [PMID: 38561626 DOI: 10.1002/jhbp.1428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/07/2024] [Accepted: 02/17/2024] [Indexed: 04/04/2024]
Abstract
INTRODUCTION Gallbladder carcinoma (GBC) and cholangiocarcinoma are aggressive forms of cancer developed in the gallbladder and biliary tracts which are related to the liver. This systematic review aimed to highlight the significant association between gallbladder, biliary cancers, and arsenic exposure. METHODS An extensive search was conducted in Embase, Cochrane, Scopus, PubMed, and Web of Science. We included studies that assessed arsenic levels in gallbladder cancer patients, without restrictions on age, sex, or language. Biological samples, such blood, bile, gallbladder tissue, gallstones, and hair were obtained, and arsenic levels were measured. Also, arsenic water and soil concentrations were collected. RESULTS A total of 13 studies were included in our review. These studies included 2234 non-gallbladder carcinoma patients and 22 585 gallbladder carcinoma cases. The participant demographics showed a gender distribution of 862 males and 1845 females, with an age range of 20-75 years. The average body mass index (BMI) was 19.8 kg/m2 for nongallbladder carcinoma patients and 20.1 kg/m2 for gallbladder carcinoma cases. The selected studies examined arsenic concentrations across various biological samples, including blood, hair, gallstones, and bile. Blood arsenic levels ranged from 0.0002 to 0.3893 μg/g and were significantly associated with increased gallbladder carcinoma risk in several studies. Hair also demonstrated a significant correlation, with arsenic concentrations ranging from 0.0002 to 6.9801 μg/g. CONCLUSION There is a strong link between arsenic exposure and gallbladder cancer or cholangiocarcinoma. Even chronic exposure to low-moderate amounts could lead to gallbladder carcinoma. These findings stress the need for more comprehensive and dedicated studies, to control arsenic water/soil levels and seek other preventive measures for this high mortality disease.
Collapse
Affiliation(s)
- Anas Elgenidy
- Faculty of Medicine, Cairo University, Cairo, Egypt
- Karl-Jaspers-Klinik, Zwischenahn, Germany
| | - Ramez M Odat
- Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | | | | | | | | | - Amal Dhahab
- Faculty of medicine, Mansoura University, Mansoura, Egypt
| | - Moustafa Salem
- Faculty of medicine, Mansoura University, Mansoura, Egypt
| | - Youmna A Negm
- Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | | | | | - Mai M Khaliel
- Faculty of medicine, Alexandria university, Alexandria, Egypt
| | | | - Ahmed M Afifi
- Department of Surgery, University of Toledo Medical Center, Toledo, Ohio, USA
| |
Collapse
|
9
|
Cazzaniga C, Göder A, Rainey MD, Quinlan A, Coughlan S, Bernard S, Santocanale C. CDC7 inhibition drives an inflammatory response and a p53-dependent senescent-like state in breast epithelial cells. FEBS J 2024. [PMID: 38555567 DOI: 10.1111/febs.17127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 02/04/2024] [Accepted: 03/18/2024] [Indexed: 04/02/2024]
Abstract
Drugs that block DNA replication prevent cell proliferation, which may result in anticancer activity. The latter is dependent on the drug's mode of action as well as on cell type-dependent responses to treatment. The inhibition of Cell division cycle 7-related protein kinase (CDC7), a key regulator of DNA replication, decreases the efficiency of origin firing and hampers the restarting of paused replication forks. Here, we show that upon prolonged CDC7 inhibition, breast-derived MCF10A cells progressively withdraw from the cell cycle and enter a reversible senescent-like state. This is characterised by the rewiring of the transcriptional programme with the induction of cytokine and chemokine expression and correlates with the accumulation of Cyclic GMP-AMP synthase (cGAS)-positive micronuclei. Importantly, cell fate depends on Cellular tumour antigen p53 (p53) function as cells no longer enter senescence but are funnelled into apoptosis upon p53 knockout. This work uncovers key features of the secondary response to CDC7 inhibitors, which could aid the development of these compounds as anticancer drugs.
Collapse
Affiliation(s)
- Chiara Cazzaniga
- Centre for Chromosome Biology, School of Biological and Chemical Sciences, University of Galway, Ireland
| | - Anja Göder
- Centre for Chromosome Biology, School of Biological and Chemical Sciences, University of Galway, Ireland
| | - Michael David Rainey
- Centre for Chromosome Biology, School of Biological and Chemical Sciences, University of Galway, Ireland
| | - Aisling Quinlan
- Centre for Chromosome Biology, School of Biological and Chemical Sciences, University of Galway, Ireland
| | - Simone Coughlan
- SFI Centre for Research Training in Genomics Data Science, University of Galway, Ireland
| | - Stefanus Bernard
- Centre for Chromosome Biology, School of Biological and Chemical Sciences, University of Galway, Ireland
- SFI Centre for Research Training in Genomics Data Science, University of Galway, Ireland
| | - Corrado Santocanale
- Centre for Chromosome Biology, School of Biological and Chemical Sciences, University of Galway, Ireland
- SFI Centre for Research Training in Genomics Data Science, University of Galway, Ireland
| |
Collapse
|
10
|
Hosea R, Hillary S, Naqvi S, Wu S, Kasim V. The two sides of chromosomal instability: drivers and brakes in cancer. Signal Transduct Target Ther 2024; 9:75. [PMID: 38553459 PMCID: PMC10980778 DOI: 10.1038/s41392-024-01767-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/18/2024] [Accepted: 02/06/2024] [Indexed: 04/02/2024] Open
Abstract
Chromosomal instability (CIN) is a hallmark of cancer and is associated with tumor cell malignancy. CIN triggers a chain reaction in cells leading to chromosomal abnormalities, including deviations from the normal chromosome number or structural changes in chromosomes. CIN arises from errors in DNA replication and chromosome segregation during cell division, leading to the formation of cells with abnormal number and/or structure of chromosomes. Errors in DNA replication result from abnormal replication licensing as well as replication stress, such as double-strand breaks and stalled replication forks; meanwhile, errors in chromosome segregation stem from defects in chromosome segregation machinery, including centrosome amplification, erroneous microtubule-kinetochore attachments, spindle assembly checkpoint, or defective sister chromatids cohesion. In normal cells, CIN is deleterious and is associated with DNA damage, proteotoxic stress, metabolic alteration, cell cycle arrest, and senescence. Paradoxically, despite these negative consequences, CIN is one of the hallmarks of cancer found in over 90% of solid tumors and in blood cancers. Furthermore, CIN could endow tumors with enhanced adaptation capabilities due to increased intratumor heterogeneity, thereby facilitating adaptive resistance to therapies; however, excessive CIN could induce tumor cells death, leading to the "just-right" model for CIN in tumors. Elucidating the complex nature of CIN is crucial for understanding the dynamics of tumorigenesis and for developing effective anti-tumor treatments. This review provides an overview of causes and consequences of CIN, as well as the paradox of CIN, a phenomenon that continues to perplex researchers. Finally, this review explores the potential of CIN-based anti-tumor therapy.
Collapse
Affiliation(s)
- Rendy Hosea
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400045, China
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Sharon Hillary
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400045, China
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Sumera Naqvi
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400045, China
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Shourong Wu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400045, China.
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing University, Chongqing, 400030, China.
| | - Vivi Kasim
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400045, China.
- The 111 Project Laboratory of Biomechanics and Tissue Repair, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing University, Chongqing, 400030, China.
| |
Collapse
|
11
|
Marcon F, Giunta S, Bignami M. Emerging roles of DNA repair factors in the stability of centromeres. Semin Cell Dev Biol 2024; 156:121-129. [PMID: 37852903 DOI: 10.1016/j.semcdb.2023.10.001] [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: 06/09/2023] [Revised: 10/07/2023] [Accepted: 10/10/2023] [Indexed: 10/20/2023]
Abstract
Satellite DNA sequences are an integral part of centromeres, regions critical for faithful segregation of chromosomes during cell division. Because of their complex repetitive structure, satellite DNA may act as a barrier to DNA replication and other DNA based transactions ultimately resulting in chromosome breakage. Over the past two decades, several DNA repair proteins have been shown to bind and function at centromeres. While the importance of these repair factors is highlighted by various structural and numerical chromosome aberrations resulting from their inactivation, their roles in helping to maintain genome stability by solving the intrinsic difficulties of satellite DNA replication or promoting their repair are just starting to emerge. In this review, we summarize the current knowledge on the role of DNA repair and DNA damage response proteins in maintaining the structure and function of centromeres in different contexts. We also report the recent connection between the roles of specific DNA repair factors at these genomic loci with age-related increase of chromosomal instability under physiological and pathological conditions.
Collapse
Affiliation(s)
- Francesca Marcon
- Department of Environment and Health, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy.
| | - Simona Giunta
- Laboratory of Genome Evolution, Department of Biology and Biotechnologies Charles Darwin, Sapienza University of Rome, 00185, Italy
| | - Margherita Bignami
- Department of Environment and Health, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy
| |
Collapse
|
12
|
Krupina K, Goginashvili A, Cleveland DW. Scrambling the genome in cancer: causes and consequences of complex chromosome rearrangements. Nat Rev Genet 2024; 25:196-210. [PMID: 37938738 PMCID: PMC10922386 DOI: 10.1038/s41576-023-00663-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2023] [Indexed: 11/09/2023]
Abstract
Complex chromosome rearrangements, known as chromoanagenesis, are widespread in cancer. Based on large-scale DNA sequencing of human tumours, the most frequent type of complex chromosome rearrangement is chromothripsis, a massive, localized and clustered rearrangement of one (or a few) chromosomes seemingly acquired in a single event. Chromothripsis can be initiated by mitotic errors that produce a micronucleus encapsulating a single chromosome or chromosomal fragment. Rupture of the unstable micronuclear envelope exposes its chromatin to cytosolic nucleases and induces chromothriptic shattering. Found in up to half of tumours included in pan-cancer genomic analyses, chromothriptic rearrangements can contribute to tumorigenesis through inactivation of tumour suppressor genes, activation of proto-oncogenes, or gene amplification through the production of self-propagating extrachromosomal circular DNAs encoding oncogenes or genes conferring anticancer drug resistance. Here, we discuss what has been learned about the mechanisms that enable these complex genomic rearrangements and their consequences in cancer.
Collapse
Affiliation(s)
- Ksenia Krupina
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA, USA
| | - Alexander Goginashvili
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA, USA
| | - Don W Cleveland
- Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA, USA.
| |
Collapse
|
13
|
Di Bona M, Bakhoum SF. Micronuclei and Cancer. Cancer Discov 2024; 14:214-226. [PMID: 38197599 DOI: 10.1158/2159-8290.cd-23-1073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/20/2023] [Accepted: 12/18/2023] [Indexed: 01/11/2024]
Abstract
Chromosome-containing micronuclei are a feature of human cancer. Micronuclei arise from chromosome mis-segregation and characterize tumors with elevated rates of chromosomal instability. Although their association with cancer has been long recognized, only recently have we broadened our understanding of the mechanisms that govern micronuclei formation and their role in tumor progression. In this review, we provide a brief historical account of micronuclei, depict the mechanisms underpinning their creation, and illuminate their capacity to propel tumor evolution through genetic, epigenetic, and transcriptional transformations. We also posit the prospect of leveraging micronuclei as biomarkers and therapeutic targets in chromosomally unstable cancers. SIGNIFICANCE Micronuclei in chromosomally unstable cancer cells serve as pivotal catalysts for cancer progression, instigating transformative genomic, epigenetic, and transcriptional alterations. This comprehensive review not only synthesizes our present comprehension but also outlines a framework for translating this knowledge into pioneering biomarkers and therapeutics, thereby illuminating novel paths for personalized cancer management.
Collapse
Affiliation(s)
- Melody Di Bona
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Samuel F Bakhoum
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| |
Collapse
|
14
|
Affandi T, Haas A, Ohm AM, Wright GM, Black JC, Reyland ME. PKCδ Regulates Chromatin Remodeling and DNA Repair through SIRT6. Mol Cancer Res 2024; 22:181-196. [PMID: 37889141 PMCID: PMC10872792 DOI: 10.1158/1541-7786.mcr-23-0493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/07/2023] [Accepted: 10/25/2023] [Indexed: 10/28/2023]
Abstract
Irradiation (IR) is a highly effective cancer therapy; however, IR damage to tumor-adjacent healthy tissues can result in significant comorbidities and potentially limit the course of therapy. We have previously shown that protein kinase C delta (PKCδ) is required for IR-induced apoptosis and that inhibition of PKCδ activity provides radioprotection in vivo. Here we show that PKCδ regulates histone modification, chromatin accessibility, and double-stranded break (DSB) repair through a mechanism that requires Sirtuin 6 (SIRT6). Overexpression of PKCδ promotes genomic instability and increases DNA damage and apoptosis. Conversely, depletion of PKCδ increases DNA repair via nonhomologous end joining (NHEJ) and homologous recombination (HR) as evidenced by increased formation of DNA damage foci, increased expression of DNA repair proteins, and increased repair of NHEJ and HR fluorescent reporter constructs. Nuclease sensitivity indicates that PKCδ depletion is associated with more open chromatin, while overexpression of PKCδ reduces chromatin accessibility. Epiproteome analysis reveals increased chromatin associated H3K36me2 in PKCδ-depleted cells which is accompanied by chromatin disassociation of KDM2A. We identify SIRT6 as a downstream mediator of PKCδ. PKCδ-depleted cells have increased SIRT6 expression, and depletion of SIRT6 reverses changes in chromatin accessibility, histone modification and DSB repair in PKCδ-depleted cells. Furthermore, depletion of SIRT6 reverses radioprotection in PKCδ-depleted cells. Our studies describe a novel pathway whereby PKCδ orchestrates SIRT6-dependent changes in chromatin accessibility to regulate DNA repair, and define a mechanism for regulation of radiation-induced apoptosis by PKCδ. IMPLICATIONS PKCδ controls sensitivity to irradiation by regulating DNA repair.
Collapse
Affiliation(s)
- Trisiani Affandi
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Ami Haas
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Angela M. Ohm
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Gregory M. Wright
- Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Joshua C. Black
- Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Mary E. Reyland
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| |
Collapse
|
15
|
Fenech M, Knasmueller S, Nersesyan A, Bolognesi C, Wultsch G, Schunck C, Volpi E, Bonassi S. The buccal micronucleus cytome assay: New horizons for its implementation in human studies. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 894:503724. [PMID: 38432772 DOI: 10.1016/j.mrgentox.2023.503724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/28/2023] [Accepted: 12/31/2023] [Indexed: 03/05/2024]
Abstract
In this report we provide a summary of the presentations and discussion of the latest knowledge regarding the buccal micronucleus (MN) cytome assay. This information was presented at the HUMN workshop held in Malaga, Spain, in connection with the 2023 European, Environmental Mutagenesis and Genomics conference. The presentations covered the most salient topics relevant to the buccal MN cytome assay including (i) the biology of the buccal mucosa, (ii) its application in human studies relating to DNA damage caused by environmental exposure to genotoxins, (iii) the association of buccal MN with cancer and a wide range of reproductive, metabolic, immunological, neurodegenerative and other age-related diseases, (iv) the impact of nutrition and lifestyle on buccal MN cytome assay biomarkers; (v) its potential for application to studies of DNA damage in children and obesity, and (vi) the growing prospects of enhancing the clinical utility by automated scoring of the buccal MN cytome assay biomarkers by image recognition software developed using artificial intelligence. The most important knowledge gap is the need of prospective studies to test whether the buccal MN cytome assay biomarkers predict health and disease.
Collapse
Affiliation(s)
- Michael Fenech
- Genome Health Foundation, North Brighton, SA 5048, Australia.
| | - Siegfried Knasmueller
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria.
| | - Armen Nersesyan
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Claudia Bolognesi
- Environmental Carcinogenesis Unit, Ospedale Policlinico San Martino, Genoa, Italy
| | - Georg Wultsch
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | | | - Emanuela Volpi
- School of Life Sciences, University of Westminster, London, UK
| | - Stefano Bonassi
- Clinical and Molecular Epidemiology, IRCCS San Raffaele Roma, 00166 Rome, Italy.
| |
Collapse
|
16
|
Schrenk D, Bignami M, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, Hoogenboom L(R, Leblanc J, Nebbia CS, Nielsen E, Ntzani E, Petersen A, Sand S, Vleminckx C, Wallace H, Barregård L, Benford D, Broberg K, Dogliotti E, Fletcher T, Rylander L, Abrahantes JC, Gómez Ruiz JÁ, Steinkellner H, Tauriainen T, Schwerdtle T. Update of the risk assessment of inorganic arsenic in food. EFSA J 2024; 22:e8488. [PMID: 38239496 PMCID: PMC10794945 DOI: 10.2903/j.efsa.2024.8488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024] Open
Abstract
The European Commission asked EFSA to update its 2009 risk assessment on arsenic in food carrying out a hazard assessment of inorganic arsenic (iAs) and using the revised exposure assessment issued by EFSA in 2021. Epidemiological studies show that the chronic intake of iAs via diet and/or drinking water is associated with increased risk of several adverse outcomes including cancers of the skin, bladder and lung. The CONTAM Panel used the benchmark dose lower confidence limit based on a benchmark response (BMR) of 5% (relative increase of the background incidence after adjustment for confounders, BMDL05) of 0.06 μg iAs/kg bw per day obtained from a study on skin cancer as a Reference Point (RP). Inorganic As is a genotoxic carcinogen with additional epigenetic effects and the CONTAM Panel applied a margin of exposure (MOE) approach for the risk characterisation. In adults, the MOEs are low (range between 2 and 0.4 for mean consumers and between 0.9 and 0.2 at the 95th percentile exposure, respectively) and as such raise a health concern despite the uncertainties.
Collapse
|
17
|
Sun K, Han Y, Li J, Yu S, Huang Y, Zhang Y, Reilly J, Tu J, Gao P, Jia D, Chen X, Hu H, Ren M, Li P, Luo J, Ren X, Zhang X, Shu X, Liu F, Liu M, Tang Z. The splicing factor DHX38 enables retinal development through safeguarding genome integrity. iScience 2023; 26:108103. [PMID: 37867960 PMCID: PMC10589891 DOI: 10.1016/j.isci.2023.108103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/03/2023] [Accepted: 09/27/2023] [Indexed: 10/24/2023] Open
Abstract
DEAH-Box Helicase 38 (DHX38) is a pre-mRNA splicing factor and also a disease-causing gene of autosomal recessive retinitis pigmentosa (arRP). The role of DHX38 in the development and maintenance of the retina remains largely unknown. In this study, by using the dhx38 knockout zebrafish model, we demonstrated that Dhx38 deficiency causes severe differentiation defects and apoptosis of retinal progenitor cells (RPCs) through disrupted mitosis and increased DNA damage. Furthermore, we found a significant accumulation of R-loops in the dhx38-deficient RPCs and human cell lines. Finally, we found that DNA replication stress is the prerequisite for R-loop-induced DNA damage in the DHX38 knockdown cells. Taken together, our study demonstrates a necessary role of DHX38 in the development of retina and reveals a DHX38/R-loop/replication stress/DNA damage regulatory axis that is relatively independent of the known functions of DHX38 in mitosis control.
Collapse
Affiliation(s)
- Kui Sun
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Yunqiao Han
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Jingzhen Li
- Research Center for Biochemistry and Molecular Biology, Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
| | - Shanshan Yu
- Institute of Visual Neuroscience and Stem Cell Engineering, College of Life Sciences and Health, Wuhan University of Science and Technology, Wuhan, Hubei 430081, P.R. China
| | - Yuwen Huang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Yangjun Zhang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Jamas Reilly
- Department of Life Sciences, Glasgow Caledonian University, Glasgow, Scotland G4 0BA, UK
| | - Jiayi Tu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Pan Gao
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Danna Jia
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Xiang Chen
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Hualei Hu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Mengmeng Ren
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Pei Li
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Jiong Luo
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Xiang Ren
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Xianqin Zhang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Xinhua Shu
- Department of Life Sciences, Glasgow Caledonian University, Glasgow, Scotland G4 0BA, UK
| | - Fei Liu
- Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, P.R. China
| | - Mugen Liu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| | - Zhaohui Tang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074, P.R. China
| |
Collapse
|
18
|
Miranda LA, de Souza VV, Campos RA, de Campos JMS, da Silva Souza T. Phytotoxicity and cytogenotoxicity of pesticide mixtures: analysis of the effects of environmentally relevant concentrations on the aquatic environment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:112117-112131. [PMID: 37824048 DOI: 10.1007/s11356-023-30100-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 09/23/2023] [Indexed: 10/13/2023]
Abstract
In this study, we investigate the toxicity of commercial formulations based on glyphosate, 2,4-D, imidacloprid, and iprodione, in isolation and mixed, on Allium cepa. The mixtures consisted of combinations in the lowest (M1), intermediate (M2), and highest concentrations (M3) of each pesticide. We measured physiological (germination rate, germination speed, and radicular length) and cyto-genotoxic (mitotic index and frequency of aberrant cells) parameters. In addition, we analyzed the cell cycle progression and cell death induction by flow cytometry. When applied in isolation, the pesticides changed the parameters evaluated. M1 and M2 inhibited root length and increased the frequency of aberrant cells. Their genotoxic effect was equivalent to that of pesticides applied in isolation. Furthermore, M1 and M2 caused cell death and M2 changed the cell cycle progression. M3 had the greatest deleterious effect on A. cepa. This mixture inhibited root length and promoted an additive or synergistic effect on the mitotic index. In addition, M3 changed all parameters analyzed by flow cytometry. This research clearly demonstrates that the pesticides tested, and their mixtures, may pose a risk to non-target organisms.
Collapse
Affiliation(s)
- Luanna Alves Miranda
- Programa de Pós-Graduação em Genética e Melhoramento, Centro de Ciências Agrárias e Engenharias, Universidade Federal do Espírito Santo, Alto Universitário, S/No, Guararema, Alegre, Espírito Santo, 29500-000, Brazil
| | - Victor Ventura de Souza
- Laboratório de Biologia Celular, Departamento de Morfologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Renata Alice Campos
- Departamento de Biologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - José Marcello Salabert de Campos
- Departamento de Biologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Tatiana da Silva Souza
- Programa de Pós-Graduação em Genética e Melhoramento, Centro de Ciências Agrárias e Engenharias, Universidade Federal do Espírito Santo, Alto Universitário, S/No, Guararema, Alegre, Espírito Santo, 29500-000, Brazil.
| |
Collapse
|
19
|
Yılmaz H, Kalefetoğlu Macar T, Macar O, Çavuşoğlu K, Yalçın E. DNA fragmentation, chromosomal aberrations, and multi-toxic effects induced by nickel and the modulation of Ni-induced damage by pomegranate seed extract in Allium cepa L. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:110826-110840. [PMID: 37794225 DOI: 10.1007/s11356-023-30193-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 09/26/2023] [Indexed: 10/06/2023]
Abstract
This study was designed to assess the recovery effect of pomegranate seed extract (PSEx) against nickel (Ni)-induced damage in Allium cepa. Except for the control group treated with tap water, five experimental groups were exposed to 265 mg L-1 PSEx, 530 mg L-1 PSEx, 1 mg L-1 NiCI2, 265 mg L-1 PSEx + 1 mg L-1 NiCI2, and 530 mg L-1 PSEx + 1 mg L-1 NiCI2, respectively. The toxicity of Ni was examined through the analysis of physiological (germination percentage, weight gain, and root length), cytotoxicity (mitotic index), genotoxicity (micronucleus, chromosomal anomalies, and Comet test), and biochemical (malondialdehyde, proline, chlorophyll a and chlorophyll b contents, the activities of superoxide dismutase and catalase) parameters. Meristematic cell defects were also investigated. The NiCl2-DNA interaction was evaluated through spectral shift analysis. Values of all physiological parameters, mitotic index scores, and chlorophyll contents decreased while micronucleus frequency, DNA tail percentage, chromosomal anomalies, proline, MDA, and enzyme activities increased following Ni administration. According to the tail DNA percentage scale, Ni application caused "high damage" to DNA. Ni-induced chromosomal anomalies were fragment, sticky chromosome, vagrant chromosome, bridge, unbalanced chromatin distribution, reverse polarization, and nucleus with bud. NiCl2-DNA interaction caused a hyperchromic shift in the UV/Vis spectrum of DNA by spectral profile analysis. Ni exposure impaired root meristems as evidenced by the formation of epidermis cell damage, flattened cell nucleus, thickened cortex cell wall, and blurry vascular tissue. Substantial recovery was seen in all parameters with the co-administration of PSEx and Ni. Recovery effects in the parameters were 18-51% and 41-84% in the 265 mg L-1 PSEx + 1 mg L-1 NiCI2 and 530 mg L-1 PSEx + 1 mg L-1 NiCI2 groups, respectively. The Comet scale showed that PSEx applied with Ni reduced DNA damage from "high" to "moderate." Ni-induced thickened cortex cell wall and blurry vascular tissue damage disappeared completely when 530 mg L-1 PSEx was mixed with Ni. PSEx successfully reduced the negative effects of Ni, which can be attributed to its content of antioxidants and bioactive ingredients.
Collapse
Affiliation(s)
- Hüseyin Yılmaz
- Department of Biology, Faculty of Science and Art, Giresun University, 28049, Giresun, Türkiye
| | - Tuğçe Kalefetoğlu Macar
- Department of Food Technology, Şebinkarahisar School of Applied Sciences, Giresun University, 28400, Giresun, Türkiye.
| | - Oksal Macar
- Department of Food Technology, Şebinkarahisar School of Applied Sciences, Giresun University, 28400, Giresun, Türkiye
| | - Kültiğin Çavuşoğlu
- Department of Biology, Faculty of Science and Art, Giresun University, 28049, Giresun, Türkiye
| | - Emine Yalçın
- Department of Biology, Faculty of Science and Art, Giresun University, 28049, Giresun, Türkiye
| |
Collapse
|
20
|
Fenech MF, Bull CF, Van Klinken BJW. Protective Effects of Micronutrient Supplements, Phytochemicals and Phytochemical-Rich Beverages and Foods Against DNA Damage in Humans: A Systematic Review of Randomized Controlled Trials and Prospective Studies. Adv Nutr 2023; 14:1337-1358. [PMID: 37573943 PMCID: PMC10721466 DOI: 10.1016/j.advnut.2023.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 07/19/2023] [Accepted: 08/07/2023] [Indexed: 08/15/2023] Open
Abstract
Accumulation of deoxyribonucleic acid (DNA) damage diminishes cellular health, increases risk of developmental and degenerative diseases, and accelerates aging. Optimizing nutrient intake can minimize accrual of DNA damage. The objectives of this review are to: 1) assemble and systematically analyze high-level evidence for the effect of supplementation with micronutrients and phytochemicals on baseline levels of DNA damage in humans, and 2) use this knowledge to identify which of these essential micronutrients or nonessential phytochemicals promote DNA integrity in vivo in humans. We conducted systematic literature searches of the PubMed database to identify interventional, prospective, cross-sectional, or in vitro studies that explored the association between nutrients and established biomarkers of DNA damage associated with developmental and degenerative disease risk. Biomarkers included lymphocyte chromosome aberrations, lymphocyte and buccal cell micronuclei, DNA methylation, lymphocyte/leukocyte DNA strand breaks, DNA oxidation, telomere length, telomerase activity, and mitochondrial DNA mutations. Only randomized, controlled interventions and uncontrolled longitudinal intervention studies conducted in humans were selected for evaluation and data extraction. These studies were ranked for the quality of their study design. In all, 96 of the 124 articles identified reported studies that achieved a quality assessment score ≥ 5 (from a maximum score of 7) and were included in the final review. Based on these studies, nutrients associated with protective effects included vitamin A and its precursor β-carotene, vitamins C, E, B1, B12, folate, minerals selenium and zinc, and phytochemicals such as curcumin (with piperine), lycopene, and proanthocyanidins. These findings highlight the importance of nutrients involved in (i) DNA metabolism and repair (folate, vitamin B12, and zinc) and (ii) prevention of oxidative stress and inflammation (vitamins A, C, E, lycopene, curcumin, proanthocyanidins, selenium, and zinc). Supplementation with certain micronutrients and their combinations may reduce DNA damage and promote cellular health by improving the maintenance of genome integrity.
Collapse
Affiliation(s)
- Michael F Fenech
- Molecular Diagnostics Solutions, CSIRO Health & Biosecurity, Adelaide, South Australia, Australia; Clinical and Health Sciences, Health and Biomedical Innovation, University of South Australia, Adelaide, South Australia, Australia; Genome Health Foundation, North Brighton, South Australia, Australia.
| | - Caroline F Bull
- Molecular Diagnostics Solutions, CSIRO Health & Biosecurity, Adelaide, South Australia, Australia; School of Molecular and Biomedical Sciences, University of Adelaide, North Terrace, Adelaide, South Australia, Australia.
| | - B Jan-Willem Van Klinken
- GSK Consumer Healthcare (now named Haleon), Warren, New Jersey, USA; Brightseed, San Francisco, CA, United States.
| |
Collapse
|
21
|
Al-Ayoubi C, Alonso-Jauregui M, Azqueta A, Vignard J, Mirey G, Rocher O, Puel O, Oswald IP, Vettorazzi A, Soler L. Mutagenicity and genotoxicity assessment of the emerging mycotoxin Versicolorin A, an Aflatoxin B1 precursor. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 335:122276. [PMID: 37517643 DOI: 10.1016/j.envpol.2023.122276] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/01/2023]
Abstract
Aflatoxin B1 (AFB1) is the most potent natural carcinogen among mycotoxins. Versicolorin A (VerA) is a precursor of AFB1 biosynthesis and is structurally related to the latter. Although VerA has already been identified as a genotoxin, data on the toxicity of VerA are still scarce, especially at low concentrations. The SOS/umu and miniaturised version of the Ames test in Salmonella Typhimurium strains used in the present study shows that VerA induces point mutations. This effect, like AFB1, depends primarily on metabolic activation of VerA. VerA also induced chromosomal damage in metabolically competent intestinal cells (IPEC-1) detected by the micronucleus assay. Furthermore, results from the standard and enzyme-modified comet assay confirmed the VerA-mediated DNA damage, and we observed that DNA repair pathways were activated upon exposure to VerA, as indicated by the phosphorylation and/or relocation of relevant DNA-repair biomarkers (γH2AX and 53BP1/FANCD2, respectively). In conclusion, VerA induces DNA damage without affecting cell viability at concentrations as low as 0.03 μM, highlighting the danger associated with VerA exposure and calling for more research on the carcinogenicity of this emerging food contaminant.
Collapse
Affiliation(s)
- Carine Al-Ayoubi
- Toxalim (Research Centre in Food Toxicology), University of Toulouse, INRAE, ENVT, INP-Purpan, UPS, 31027, Toulouse, France
| | - Maria Alonso-Jauregui
- Department of Pharmacology and Toxicology, Research Group MITOX, School of Pharmacy and Nutrition, Universidad de Navarra, 31008 Pamplona, Spain
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, Research Group MITOX, School of Pharmacy and Nutrition, Universidad de Navarra, 31008 Pamplona, Spain
| | - Julien Vignard
- Toxalim (Research Centre in Food Toxicology), University of Toulouse, INRAE, ENVT, INP-Purpan, UPS, 31027, Toulouse, France
| | - Gladys Mirey
- Toxalim (Research Centre in Food Toxicology), University of Toulouse, INRAE, ENVT, INP-Purpan, UPS, 31027, Toulouse, France
| | - Ophelie Rocher
- Toxalim (Research Centre in Food Toxicology), University of Toulouse, INRAE, ENVT, INP-Purpan, UPS, 31027, Toulouse, France
| | - Olivier Puel
- Toxalim (Research Centre in Food Toxicology), University of Toulouse, INRAE, ENVT, INP-Purpan, UPS, 31027, Toulouse, France
| | - Isabelle P Oswald
- Toxalim (Research Centre in Food Toxicology), University of Toulouse, INRAE, ENVT, INP-Purpan, UPS, 31027, Toulouse, France
| | - Ariane Vettorazzi
- Department of Pharmacology and Toxicology, Research Group MITOX, School of Pharmacy and Nutrition, Universidad de Navarra, 31008 Pamplona, Spain
| | - Laura Soler
- Toxalim (Research Centre in Food Toxicology), University of Toulouse, INRAE, ENVT, INP-Purpan, UPS, 31027, Toulouse, France.
| |
Collapse
|
22
|
Li X, Zang N, Zhang N, Pang L, Lv L, Meng X, Lv X, Leng J. DNA damage resulting from human endocrine disrupting chemical exposure: Genotoxicity, detection and dietary phytochemical intervention. CHEMOSPHERE 2023; 338:139522. [PMID: 37478996 DOI: 10.1016/j.chemosphere.2023.139522] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/21/2023] [Accepted: 07/14/2023] [Indexed: 07/23/2023]
Abstract
In recent years, exposure to endocrine disrupting chemicals (EDCs) has posed an increasing threat to human health. EDCs are major risk factors in the occurrence and development of many diseases. Continuous DNA damage triggers severe pathogenic consequences, such as cancer. Beyond their effects on the endocrine system, EDCs genotoxicity is also worthy of attention, owing to the high accessibility and bioavailability of EDCs. This review investigates and summarizes nearly a decade of DNA damage studies on EDC exposure, including DNA damage mechanisms, detection methods, population marker analysis, and the application of dietary phytochemicals. The aims of this review are (1) to systematically summarize the genotoxic effects of environmental EDCs (2) to comprehensively summarize cutting-edge measurement methods, thus providing analytical solutions for studies on EDC exposure; and (3) to highlight critical data on the detoxification and repair effects of dietary phytochemicals. Dietary phytochemicals decrease genotoxicity by playing a major role in the detoxification system, and show potential therapeutic effects on human diseases caused by EDC exposure. This review may support research on environmental toxicology and alternative chemo-prevention for human EDC exposure.
Collapse
Affiliation(s)
- Xiaoqing Li
- Comprehensive Exposure Research Center, School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, 116600, China
| | - Ningzi Zang
- Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, China
| | - Nan Zhang
- Comprehensive Exposure Research Center, School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, 116600, China
| | - Lijian Pang
- Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, China
| | - Ling Lv
- Comprehensive Exposure Research Center, School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, 116600, China
| | - Xiansheng Meng
- Comprehensive Exposure Research Center, School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, 116600, China
| | - Xiaodong Lv
- Comprehensive Exposure Research Center, School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, 116600, China
| | - Jiapeng Leng
- Comprehensive Exposure Research Center, School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, 116600, China.
| |
Collapse
|
23
|
Hovhannisyan G, Harutyunyan T, Aroutiounian R, Liehr T. The Diagnostic, Prognostic, and Therapeutic Potential of Cell-Free DNA with a Special Focus on COVID-19 and Other Viral Infections. Int J Mol Sci 2023; 24:14163. [PMID: 37762464 PMCID: PMC10532175 DOI: 10.3390/ijms241814163] [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: 08/02/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Cell-free DNA (cfDNA) in human blood serum, urine, and other body fluids recently became a commonly used diagnostic marker associated with various pathologies. This is because cfDNA enables a much higher sensitivity than standard biochemical parameters. The presence of and/or increased level of cfDNA has been reported for various diseases, including viral infections, including COVID-19. Here, we review cfDNA in general, how it has been identified, where it can derive from, its molecular features, and mechanisms of release and clearance. General suitability of cfDNA for diagnostic questions, possible shortcomings and future directions are discussed, with a special focus on coronavirus infection.
Collapse
Affiliation(s)
- Galina Hovhannisyan
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Tigran Harutyunyan
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Rouben Aroutiounian
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, Am Klinikum 1, 07747 Jena, Germany
| |
Collapse
|
24
|
Kiranatlioglu-Firat F, Demir H, Cuce I, Altın-Celik P, Eciroglu H, Bayram F, Donmez-Altuntas H. Increased oxidative and chromosomal DNA damage in patients with ankylosing spondylitis: its role in pathogenesis. Clin Exp Med 2023; 23:1721-1728. [PMID: 36441439 DOI: 10.1007/s10238-022-00957-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/18/2022] [Indexed: 11/29/2022]
Abstract
Increased DNA damage has been suggested to contribute to the pathogenesis of chronic inflammatory diseases, but controlled studies are lacking in ankylosing spondylitis (AS). Therefore, we assessed oxidative stress, oxidative DNA damage, chromosomal DNA damage, cell proliferation and cell death in the peripheral blood lymphocytes of patients with AS as well as the possible role of DNA damage in the development of the disease. In total, 25 newly diagnosed AS patients who had not received anti-inflammatory agents and 25 healthy controls were recruited. Oxidative DNA damage was assessed by plasma 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels, and chromosomal DNA damage was assessed by the cytokinesis-block micronucleus cytome (CBMN-cyt) method. Compared to controls, the micronucleus (MN) frequencies, nucleoplasmic bridge (NPB) frequencies, nuclear bud (NBUD) frequencies, apoptotic cell frequencies, necrotic cell frequencies and plasma 8-OHdG levels were significantly higher in patients with AS (p < 0.001, p < 0.05, p < 0.01, p < 0.001, p < 0.001, and p < 0.001, respectively), and the metaphase cell numbers, binucleated (BN) cell frequencies and nuclear division index (NDI) values were significantly lower in patients with AS (p < 0.01, p < 0.001 and p < 0.001, respectively). Thus, the present findings suggested that oxidative stress, oxidative DNA damage, and chromosomal DNA damage may be involved in the pathogenesis of AS similar to other chronic inflammatory diseases. In addition, the increased plasma 8-OHdG levels, MN frequencies, NPB frequencies and NBUD frequencies in AS patients may reflect an increased cancer risk.
Collapse
Affiliation(s)
| | - Huseyin Demir
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Erciyes University, Kayseri, Turkey
- Department of Physical Medicine and Rehabilitation, Medical Palace Hospital, Kayseri, Turkey
| | - Isa Cuce
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Pinar Altın-Celik
- Department of Medical Biology, Faculty of Medicine, Erciyes University, 38030, Kayseri, Turkey
| | - Hamiyet Eciroglu
- Department of Medical Biology, Faculty of Medicine, Erciyes University, 38030, Kayseri, Turkey
- Vocational School of Health Services, Alanya Alaaddin Keykubat University, Antalya, Turkey
| | - Fahri Bayram
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Hamiyet Donmez-Altuntas
- Department of Medical Biology, Faculty of Medicine, Erciyes University, 38030, Kayseri, Turkey.
| |
Collapse
|
25
|
Asurappulige HSH, Thomas AD, Morse HR. Genotoxicity of cytokines at chemotherapy-induced 'storm' concentrations in a model of the human bone marrow. Mutagenesis 2023; 38:201-215. [PMID: 37326959 PMCID: PMC10448863 DOI: 10.1093/mutage/gead018] [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: 07/25/2022] [Accepted: 06/14/2023] [Indexed: 06/17/2023] Open
Abstract
Donor cell leukaemia (DCL) is a complication of haematopoietic stem cell transplantation where donated cells become malignant within the patient's bone marrow. As DCL predominates as acute myeloid leukaemia, we hypothesized that the cytokine storm following chemotherapy played a role in promoting and supporting leukaemogenesis. Cytokines have also been implicated in genotoxicity; thus, we explored a cell line model of the human bone marrow (BM) to secrete myeloid cytokines following drug treatment and their potential to induce micronuclei. HS-5 human stromal cells were exposed to mitoxantrone (MTX) and chlorambucil (CHL) and, for the first time, were profiled for 80 cytokines using an array. Fifty-four cytokines were detected in untreated cells, of which 24 were upregulated and 10 were downregulated by both drugs. FGF-7 was the lowest cytokine to be detected in both untreated and treated cells. Eleven cytokines not detected at baseline were detected following drug exposure. TNFα, IL6, GM-CSF, G-CSF, and TGFβ1 were selected for micronuclei induction. TK6 cells were exposed to these cytokines in isolation and in paired combinations. Only TNFα and TGFβ1 induced micronuclei at healthy concentrations, but all five cytokines induced micronuclei at storm levels, which was further increased when combined in pairs. Of particular concern was that some combinations induced micronuclei at levels above the mitomycin C positive control; however, most combinations were less than the sum of micronuclei induced following exposure to each cytokine in isolation. These data infer a possible role for cytokines through chemotherapy-induced cytokine storm, in the instigation and support of leukaemogenesis in the BM, and implicate the need to evaluate individuals for variability in cytokine secretion as a potential risk factor for complications such as DCL.
Collapse
Affiliation(s)
- Harshini S H Asurappulige
- School of Applied Sciences, University of the West of England, Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, United Kingdom
| | - Adam D Thomas
- School of Applied Sciences, University of the West of England, Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, United Kingdom
| | - H Ruth Morse
- School of Applied Sciences, University of the West of England, Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, United Kingdom
| |
Collapse
|
26
|
Schlickmann DDS, Molz P, Uebel GC, Santos C, Brand C, Colombelli RAW, da Silva TG, Steffens JP, Limberger Castilhos EDS, Benito PJ, Rieger A, Franke SIR. The moderating role of macronutrient intake in relation to body composition and genotoxicity: A study with gym users. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2023; 890:503660. [PMID: 37567647 DOI: 10.1016/j.mrgentox.2023.503660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/14/2023] [Accepted: 07/15/2023] [Indexed: 08/13/2023]
Abstract
In a cross-sectional study of gymnasium users (both sexes, ages = 41.9 ± 14.8 years), we examined the moderating role of macronutrient intake in relation to body composition and genotoxicity. A questionnaire was administered to evaluate characteristics of the participants. To assess macronutrient consumption, we used 24-h food recalls on three non-consecutive days. Body composition (body fat percentage and muscle mass) was evaluated with a bioimpedance scale. Genotoxicity was assessed with the buccal micronucleus cytome assay. Multiple linear regression models were applied, adjusting for age; sex; tobacco and alcohol consumption; and (with regard to exercise habits) frequency, training time, intensity, and types. Micronucleus frequency was directly associated with body fat and inversely associated with muscle mass. Our study shows that carbohydrate and fat intakes affect body fat percentage and micronucleus frequency in gymnasium users.
Collapse
Affiliation(s)
- Diene da Silva Schlickmann
- Graduate Program in Health Promotion, University of Santa Cruz do Sul. Department of Health Science, Santa Cruz do Sul, Brazil; Laboratory of Experimental Nutrition. Department of Health Science, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Patrícia Molz
- Graduate Program in Health Promotion, University of Santa Cruz do Sul. Department of Health Science, Santa Cruz do Sul, Brazil; Laboratory of Experimental Nutrition. Department of Health Science, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil; Graduate Program in Biosciences, Federal University of Health Sciences of Porto Alegre, Brazil
| | - Gabriela Cristina Uebel
- Course of Biomedicine, University of Santa Cruz do Sul, Department of Health Science, Santa Cruz do Sul, Brazil
| | - Caroline Santos
- Graduate Program in Health Promotion, University of Santa Cruz do Sul. Department of Health Science, Santa Cruz do Sul, Brazil; Laboratory of Experimental Nutrition. Department of Health Science, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Caroline Brand
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaiso, Valparaíso, Chile
| | - Renato Alberto Weber Colombelli
- Laboratory of Experimental Nutrition. Department of Health Science, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Thalia Gama da Silva
- Laboratory of Experimental Nutrition. Department of Health Science, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Juliana Priebe Steffens
- Laboratory of Experimental Nutrition. Department of Health Science, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | | | - Pedro J Benito
- LFE Research Group, Department of Health and Human Performance, Faculty of Physical Activity and Sports Sciences, Universidad Politécnica de Madrid, Madrid, Spain
| | - Alexandre Rieger
- Graduate Program in Health Promotion, University of Santa Cruz do Sul. Department of Health Science, Santa Cruz do Sul, Brazil; Graduate Program in Environmental Technology, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Silvia Isabel Rech Franke
- Graduate Program in Health Promotion, University of Santa Cruz do Sul. Department of Health Science, Santa Cruz do Sul, Brazil; Laboratory of Experimental Nutrition. Department of Health Science, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil.
| |
Collapse
|
27
|
Cimini D. Twenty years of merotelic kinetochore attachments: a historical perspective. Chromosome Res 2023; 31:18. [PMID: 37466740 PMCID: PMC10411636 DOI: 10.1007/s10577-023-09727-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/20/2023] [Accepted: 07/08/2023] [Indexed: 07/20/2023]
Abstract
Micronuclei, small DNA-containing structures separate from the main nucleus, were used for decades as an indicator of genotoxic damage. Micronuclei containing whole chromosomes were considered a biomarker of aneuploidy and were believed to form, upon mitotic exit, from chromosomes that lagged behind in anaphase as all other chromosomes segregated to the poles of the mitotic spindle. However, the mechanism responsible for inducing anaphase lagging chromosomes remained unknown until just over twenty years ago. Here, I summarize what preceded and what followed this discovery, highlighting some of the open questions and opportunities for future investigation.
Collapse
Affiliation(s)
- Daniela Cimini
- Department of Biological Sciences and Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA, 24061, USA.
| |
Collapse
|
28
|
Kirsch-Volders M, Fenech M. Towards prevention of aneuploidy-associated cellular senescence and aging: more questions than answers? MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2023; 792:108474. [PMID: 37866738 DOI: 10.1016/j.mrrev.2023.108474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 10/10/2023] [Accepted: 10/16/2023] [Indexed: 10/24/2023]
Abstract
The aim of this review is to discuss how aneuploidy contributes to the aging process, and to identify plausible strategies for its prevention. After an overview of mechanisms leading to aneuploidy and the major features of cellular senescence, we discuss the link between (i) aneuploidy and cellular senescence; (ii) aneuploidy and aging; and (iii) cellular senescence and aging. We also consider (i) interactions between aneuploidy, micronuclei, cellular senescence and aging, (ii) the potential of nutritional treatments to prevent aneuploidy-associated senescence and aging, and (iii) knowledge and technological gaps. Evidence for a causal link between aneuploidy, senescence and aging is emerging. In vitro, aneuploidy accompanies the entry into cellular senescence and can itself induce senescence. How aneuploidy contributes in vivo to cellular senescence is less clear. Several routes depending on aneuploidy and/or senescence converge towards chronic inflammation, the major driver of unhealthy aging. Aneuploidy can induce the pro-inflammatory Senescence Associated Secretory Phenotype (SASP), either directly or as a result of micronucleus (MN) induction leading to leakage of DNA into the cytoplasm and triggering of the cGAS-STING pathway of innate immune response. A major difficulty in understanding the impact of aneuploidy on senescence and aging in vivo, results from the heterogeneity of cellular senescence in different tissues at the cytological and molecular level. Due to this complexity, there is at the present time no biomarker or biomarker combination characteristic for all types of senescent cells. In conclusion, a deeper understanding of the critical role aneuploidy plays in cellular senescence and aging is essential to devise practical strategies to protect human populations from aneuploidy-associated pathologies. We discuss emerging evidence, based on in vitro and in vivo studies, that adequate amounts of specific micronutrients are essential for prevention of aneuploidy in humans and that precise nutritional intervention may be essential to help avoid the scourge of aneuploidy-driven diseases.
Collapse
Affiliation(s)
- Micheline Kirsch-Volders
- Laboratory for Cell Genetics, Department Biology, Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
| | - Michael Fenech
- Clinical and Health Sciences, University of South Australia, SA 5000, Australia; Genome Health Foundation, North Brighton, SA 5048, Australia.
| |
Collapse
|
29
|
Cruz B, Balderas I, Gómez I. Aqueous synthesis of red fluorescent l-cysteine functionalized Cu 2S quantum dots with potential application as an As(iii) aptasensor. RSC Adv 2023; 13:18946-18952. [PMID: 37362604 PMCID: PMC10286222 DOI: 10.1039/d3ra02886k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 06/14/2023] [Indexed: 06/28/2023] Open
Abstract
Water-stable Cu2S quantum dots were obtained by applying l-cysteine as a Cu(ii) to Cu(i) reducer and stabilizer in water and using an inert atmosphere at ambient temperature. The obtained quantum dots were characterized by STEM, XRD, FT-IR, UV-Vis, Raman, and fluorescence spectroscopy. The synthesis was optimized to achieve Cu2S quantum dots with an average diameter of about 9 nm that show red fluorescence emission. l-cysteine stabilization mediates crystallite growth, avoids aggregation of the quantum dots, and allows water solubility through polar functional groups, improving the fluorescence. The fluorometric test in the presence of the aptamer showed a shift in fluorescence intensity when an aliquot of As(iii) with a concentration of 100 pmol l-1 is incorporated because As(iii) and the used aptamer make a complex, leaving free the quantum dots and recovering their fluorescence response. The developed Cu2S quantum dots open possibilities for fluorescent detection of different analytes by simply changing aptamers according to the analyte to be detected.
Collapse
Affiliation(s)
- Brandon Cruz
- Laboratorio de Materiales I, Universidad Autónoma de Nuevo León San Nicolás de los Garza Mexico
| | - Isaías Balderas
- Laboratorio de Ingeniería Genética y Genómica, Universidad Autónoma de Nuevo León San Nicolás de los Garza Mexico
| | - Idalia Gómez
- Laboratorio de Materiales I, Universidad Autónoma de Nuevo León San Nicolás de los Garza Mexico
| |
Collapse
|
30
|
Affandi T, Haas A, Ohm AM, Wright GM, Black JC, Reyland ME. PKCδ regulates chromatin remodeling and DNA repair through SIRT6. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.24.541991. [PMID: 37292592 PMCID: PMC10245827 DOI: 10.1101/2023.05.24.541991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Protein kinase C delta (PKCδ) is a ubiquitous kinase whose function is defined in part by localization to specific cellular compartments. Nuclear PKCδ is both necessary and sufficient for IR-induced apoptosis, while inhibition of PKCδ activity provides radioprotection in vivo. How nuclear PKCδ regulates DNA-damage induced cell death is poorly understood. Here we show that PKCδ regulates histone modification, chromatin accessibility, and double stranded break (DSB) repair through a mechanism that requires SIRT6. Overexpression of PKCδ promotes genomic instability and increases DNA damage and apoptosis. Conversely, depletion of PKCδ increases DNA repair via non-homologous end joining (NHEJ) and homologous recombination (HR) as evidenced by more rapid formation of NHEJ (DNA-PK) and HR (Rad51) DNA damage foci, increased expression of repair proteins, and increased repair of NHEJ and HR fluorescent reporter constructs. Nuclease sensitivity indicates that PKCδ depletion is associated with more open chromatin, while overexpression of PKCδ reduces chromatin accessibility. Epiproteome analysis revealed that PKCδ depletion increases chromatin associated H3K36me2, and reduces ribosylation of KDM2A and chromatin bound KDM2A. We identify SIRT6 as a downstream mediator of PKCδ. PKCδ-depleted cells have increased expression of SIRT6, and depletion of SIRT6 reverses the changes in chromatin accessibility, histone modification and NHEJ and HR DNA repair seen with PKCδ-depletion. Furthermore, depletion of SIRT6 reverses radioprotection in PKCδ-depleted cells. Our studies describe a novel pathway whereby PKCδ orchestrates SIRT6-dependent changes in chromatin accessibility to increase DNA repair, and define a mechanism for regulation of radiation-induced apoptosis by PKCδ.
Collapse
Affiliation(s)
- Trisiani Affandi
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Ami Haas
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Angela M. Ohm
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Gregory M. Wright
- Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Joshua C. Black
- Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Mary E. Reyland
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| |
Collapse
|
31
|
Rossnerova A, Elzeinova F, Chvojkova I, Honkova K, Sima M, Milcova A, Pastorkova A, Schmuczerova J, Rossner P, Topinka J, Sram RJ. Effects of various environments on epigenetic settings and chromosomal damage. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 323:121290. [PMID: 36804881 DOI: 10.1016/j.envpol.2023.121290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 02/10/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
Air pollution is a dominant environmental exposure factor with significant health consequences. Unexpectedly, research in a heavily polluted region of the Czech Republic, with traditional heavy industry, revealed repeatedly the lowest frequency of micronuclei in the season with the highest concentrations of air pollutants including carcinogenic benzo[a]pyrene (B[a]P). Molecular findings have been collected for more than 10 years from various locations of the Czech Republic, with differing quality of ambient air. Preliminary conclusions have suggested adaptation of the population from the polluted locality (Ostrava, Moravian-Silesian Region (MSR)) to chronic air pollution exposure. In this study we utilize the previous findings and, for the first time, investigate micronuclei (MN) frequency by type: (i) centromere positive (CEN+) MN, representing chromosomal losses, and (ii) centromere negative (CEN-) MN representing chromosomal breaks. As previous results indicated differences between populations in the expression of XRCC5, a gene involved in the non-homologous end-joining (NHEJ) repair pathway, possible variations in epigenetic settings in this gene were also investigated. This new research was conducted in two seasons in the groups from two localities with different air quality levels (Ostrava (OS) and Prague (PG)). The obtained new results show significantly lower frequencies of chromosomal breaks in the OS subjects, related to the highest air pollution levels (p < 0.001). In contrast, chromosomal losses were comparable between both groups. In addition, significantly lower DNA methylation was found in 14.3% of the analyzed CpG loci of XRCC5 in the population from OS. In conclusion, the epigenetic adaptation (hypomethylation) in XRCC5 involved in the NHEJ repair pathway in the population from the polluted region, was suggested as a reason for the reduced level of chromosomal breaks. Further research is needed to explore the additional mechanisms, including genetic adaptation.
Collapse
Affiliation(s)
- Andrea Rossnerova
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic; Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Fatima Elzeinova
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Irena Chvojkova
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Katerina Honkova
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Michal Sima
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Alena Milcova
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Anna Pastorkova
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Jana Schmuczerova
- Department of Medical Genetics, L. Pasteur University Hospital, Trieda SNP 1, 040 11, Kosice, Slovakia.
| | - Pavel Rossner
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Jan Topinka
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| | - Radim J Sram
- Department of Genetic Toxicology and Epigenetics, Institute of Experimental Medicine CAS, Videnska 1083, 142 20, Prague 4, Czech Republic.
| |
Collapse
|
32
|
Luan H, Zhao J, Yang J, Gao X, Song J, Chen X, Cai Q, Yang C, Zhao L, Ji M, Zhai H, Chen Z, Li X, Liu W. Integrated genotoxicity of secondary and tertiary treatment effluents in North China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 865:161241. [PMID: 36586681 DOI: 10.1016/j.scitotenv.2022.161241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/01/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
Genotoxic effects on aquatic organisms caused by wastewater discharging have raised extensive concerns. However, the efficiency of various wastewater treatment processes to reduce effluent genotoxicity was not well known. Genotoxic effects of effluents from four secondary wastewater treatment plants (SWTPs) and a tertiary wastewater treatment plant (TTP) in north China on Chinese rare minnows (Gobiocypris rarus) were evaluated and the toxicity reduction efficiency of various treatment techniques was compared. SWTPs and TTP final effluents disturbed the antioxidant system and lipid peroxidation, with malondialdehyde (MDA) contents in the fish livers and gills increasing to 1.4-2.4 folds and 1.6-3.1 folds of control, respectively. Significant increases in erythrocytes micronucleus (MN) frequency were induced by effluent, and liver DNA damage caused by final SWTPs effluent was 29-54 % lower than TTP effluent. Further, DNA repair gene atm and growth arrest gene gadd45a were remarkably upregulated by SWTP and TTP final effluents to 1.8-12 folds and 4.1-15 folds, respectively, being consistent with the chromosomal aberration and DNA damage in liver tissue. Integrated biomarker response (IBR) of the tertiary effluent was 49 %-69 % lower than the secondary effluents. However, the final ozone disinfection at TTP caused an increase in the DNA damage, suggesting the generation of genotoxic by-products. UV disinfection at secondary treatment removed part of genotoxicity, with a reduction in IBR of 0 %-47 %. The total semi-volatile organic compounds (SVOCs) detected in the final effluent contained 5 %-56 % potential genotoxic substances, removal of which was 9 %-51 % lower than non-genotoxic compounds. Microfiltration and reverse osmosis process exhibited good performance in removing both the integrated genotoxicity and the potential genotoxic SVOCs. Our finding shows that TTP is superior than SWTP for wastewater treatment due to higher genotoxicity removal, but ozone disinfection needs improvement by optimizing performance parameters or adding post-treatment processes, to achieve better protection for aquatic organisms against genotoxic contaminants.
Collapse
Affiliation(s)
- Haiyang Luan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jing Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jing Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xin Gao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jingyang Song
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xiaofeng Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Qinyu Cai
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Chen Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Liqian Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Min Ji
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Hongyan Zhai
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Zhiqiang Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, China
| | - Xuehua Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Wei Liu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
| |
Collapse
|
33
|
M’Kacher R, Colicchio B, Junker S, El Maalouf E, Heidingsfelder L, Plesch A, Dieterlen A, Jeandidier E, Carde P, Voisin P. High Resolution and Automatable Cytogenetic Biodosimetry Using In Situ Telomere and Centromere Hybridization for the Accurate Detection of DNA Damage: An Overview. Int J Mol Sci 2023; 24:ijms24065699. [PMID: 36982772 PMCID: PMC10054499 DOI: 10.3390/ijms24065699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 03/19/2023] Open
Abstract
In the event of a radiological or nuclear accident, or when physical dosimetry is not available, the scoring of radiation-induced chromosomal aberrations in lymphocytes constitutes an essential tool for the estimation of the absorbed dose of the exposed individual and for effective triage. Cytogenetic biodosimetry employs different cytogenetic assays including the scoring of dicentrics, micronuclei, and translocations as well as analyses of induced premature chromosome condensation to define the frequency of chromosome aberrations. However, inherent challenges using these techniques include the considerable time span from sampling to result, the sensitivity and specificity of the various techniques, and the requirement of highly skilled personnel. Thus, techniques that obviate these challenges are needed. The introduction of telomere and centromere (TC) staining have successfully met these challenges and, in addition, greatly improved the efficiency of cytogenetic biodosimetry through the development of automated approaches, thus reducing the need for specialized personnel. Here, we review the role of the various cytogenetic dosimeters and their recent improvements in the management of populations exposed to genotoxic agents such as ionizing radiation. Finally, we discuss the emerging potentials to exploit these techniques in a wider spectrum of medical and biological applications, e.g., in cancer biology to identify prognostic biomarkers for the optimal triage and treatment of patients.
Collapse
Affiliation(s)
- Radhia M’Kacher
- Cell Environment DNA Damage R&D, Genopole, 91000 Evry-Courcouronnes, France
- Correspondence: ; Tel.: +33-160878918
| | - Bruno Colicchio
- IRIMAS, Institut de Recherche en Informatique, Mathématiques, Automatique et Signal, Université de Haute-Alsace, 69093 Mulhouse, France
| | - Steffen Junker
- Institute of Biomedicine, University of Aarhus, DK-8000 Aarhus, Denmark
| | - Elie El Maalouf
- Cell Environment DNA Damage R&D, Genopole, 91000 Evry-Courcouronnes, France
| | | | - Andreas Plesch
- MetaSystems GmbH, Robert-Bosch-Str. 6, D-68804 Altlussheim, Germany
| | - Alain Dieterlen
- IRIMAS, Institut de Recherche en Informatique, Mathématiques, Automatique et Signal, Université de Haute-Alsace, 69093 Mulhouse, France
| | - Eric Jeandidier
- Laboratoire de Génétique, Groupe Hospitalier de la Région de Mulhouse Sud-Alsace, 69093 Mulhouse, France
| | - Patrice Carde
- Department of Hematology, Institut Gustave Roussy, 94804 Villejuif, France
| | - Philippe Voisin
- Cell Environment DNA Damage R&D, Genopole, 91000 Evry-Courcouronnes, France
| |
Collapse
|
34
|
Baggio C, Luisetto R, Boscaro C, Scanu A, Ramonda R, Albiero M, Sfriso P, Oliviero F. Leucocyte Abnormalities in Synovial Fluid of Degenerative and Inflammatory Arthropathies. Int J Mol Sci 2023; 24:ijms24065450. [PMID: 36982526 PMCID: PMC10056596 DOI: 10.3390/ijms24065450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/26/2023] [Accepted: 03/11/2023] [Indexed: 03/14/2023] Open
Abstract
Genome damage has been related to the induction of autoimmune processes, chronic inflammation, and apoptosis. Recent studies suggest that some rheumatological diseases are associated with overall genomic instability in the T cell compartment. However, no data regarding leucocyte abnormalities in synovial fluid (SF) and their relationship with inflammation are available. The aim of this study was to investigate cellular phenotypes in SF collected from patients with different inflammatory arthropathies, including rhematoid arthritis (RA), psoriatic arthritis (PsA), crystal-induced arthritis (CIA), and non-inflammatory arthropathies, such as osteoarthritis (OA). We found high percentage of micronuclei in SF from CIA compared to the other groups and a high frequency of pyknotic cell in RA and CIA patients. A correlation between pyknosis and immature polymorphonuclear cells with local inflammatory indices was observed. The study of the apoptosis process revealed an increased BAX expression in CIA and RA compared to OA and PsA, while Bcl-2 was higher in CIA. Caspase-3 activity was increased in SF from RA patients and correlates with inflammatory and anti-inflammatory cytokines. In conclusion, our results showed that inflammatory SF is associated with genomic instability and abnormal cell subsets.
Collapse
Affiliation(s)
- Chiara Baggio
- Rheumatology Unit, Department of Medicine—DIMED, University of Padova, 35128 Padova, Italy
| | - Roberto Luisetto
- Department of Surgery, Oncology and Gastroenterology-DISCOG, University of Padova, 35128 Padova, Italy
| | - Carlotta Boscaro
- Department of Medicine, University of Padova, 35128 Padova, Italy
- Veneto Institute of Molecular Medicine, Via G. Orus 2, 35129 Padova, Italy
| | - Anna Scanu
- Department of Woman’s and Child’s Health, University of Padova, 35128 Padova, Italy
| | - Roberta Ramonda
- Rheumatology Unit, Department of Medicine—DIMED, University of Padova, 35128 Padova, Italy
| | - Mattia Albiero
- Department of Medicine, University of Padova, 35128 Padova, Italy
- Veneto Institute of Molecular Medicine, Via G. Orus 2, 35129 Padova, Italy
| | - Paolo Sfriso
- Rheumatology Unit, Department of Medicine—DIMED, University of Padova, 35128 Padova, Italy
| | - Francesca Oliviero
- Rheumatology Unit, Department of Medicine—DIMED, University of Padova, 35128 Padova, Italy
- Correspondence: ; Tel.: +39-049-8218682
| |
Collapse
|
35
|
Jaiswal AS, Kim HS, Schärer OD, Sharma N, Williamson E, Srinivasan G, Phillips L, Kong K, Arya S, Misra A, Dutta A, Gupta Y, Walter C, Burma S, Narayan S, Sung P, Nickoloff J, Hromas R. EEPD1 promotes repair of oxidatively-stressed replication forks. NAR Cancer 2023; 5:zcac044. [PMID: 36683914 PMCID: PMC9846428 DOI: 10.1093/narcan/zcac044] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 11/22/2022] [Accepted: 12/14/2022] [Indexed: 01/19/2023] Open
Abstract
Unrepaired oxidatively-stressed replication forks can lead to chromosomal instability and neoplastic transformation or cell death. To meet these challenges cells have evolved a robust mechanism to repair oxidative genomic DNA damage through the base excision repair (BER) pathway, but less is known about repair of oxidative damage at replication forks. We found that depletion or genetic deletion of EEPD1 decreases clonogenic cell survival after oxidative DNA damage. We demonstrate that EEPD1 is recruited to replication forks stressed by oxidative damage induced by H2O2 and that EEPD1 promotes replication fork repair and restart and decreases chromosomal abnormalities after such damage. EEPD1 binds to abasic DNA structures and promotes resolution of genomic abasic sites after oxidative stress. We further observed that restoration of expression of EEPD1 via expression vector transfection restores cell survival and suppresses chromosomal abnormalities induced by oxidative stress in EEPD1-depleted cells. Consistent with this, we found that EEPD1 preserves replication fork integrity by preventing oxidatively-stressed unrepaired fork fusion, thereby decreasing chromosome instability and mitotic abnormalities. Our results indicate a novel role for EEPD1 in replication fork preservation and maintenance of chromosomal stability during oxidative stress.
Collapse
Affiliation(s)
- Aruna S Jaiswal
- Division of Hematology and Medical Oncology, Department of Medicine and the Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Hyun-Suk Kim
- Center for Genomic Integrity, Institute for Basic Science, Ulsan, Republic of Korea
| | - Orlando D Schärer
- Center for Genomic Integrity, Institute for Basic Science, Ulsan, Republic of Korea
- Department of Biological Sciences, School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Neelam Sharma
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Elizabeth A Williamson
- Division of Hematology and Medical Oncology, Department of Medicine and the Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Gayathri Srinivasan
- Division of Hematology and Medical Oncology, Department of Medicine and the Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Linda Phillips
- Division of Hematology and Medical Oncology, Department of Medicine and the Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Kimi Kong
- Division of Hematology and Medical Oncology, Department of Medicine and the Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Shailee Arya
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Anurag Misra
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Arijit Dutta
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Yogesh Gupta
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Christi A Walter
- Department of Cell Systems and Anatomy, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Sandeep Burma
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
- Department of Neurosurgery, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Satya Narayan
- Department of Anatomy and Cell Biology, University of Florida, Gainesville, FL 32610, USA
| | - Patrick Sung
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Jac A Nickoloff
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Robert Hromas
- Division of Hematology and Medical Oncology, Department of Medicine and the Mays Cancer Center, University of Texas Health Science Center, San Antonio, TX 78229, USA
| |
Collapse
|
36
|
De Silva WAPM, Pathiratne A. Nano-titanium dioxide induced genotoxicity and histological lesions in a tropical fish model, Nile tilapia (Oreochromis niloticus). ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 98:104043. [PMID: 36565896 DOI: 10.1016/j.etap.2022.104043] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 12/09/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
This study evaluated potential genotoxic and histopathological effects of nano-TiO2 (0.1, 0.5 and 1 mg/L) in Nile tilapia over 7, 14 and 21 days of exposure. Bulk TiO2 (1 mg/L) along with controls was used for comparison. Comet assay revealed that nano-TiO2 can induce erythrocytic DNA damage in a concentration dependent manner. However, micronuclei induction was observed only at the lowest concentration. Elevated organ damage indices indicate nano-TiO2 induced histological alterations in liver and intestine. Severe histological alterations induced by nano-TiO2 in the fish were necrosis of hepatic parenchyma and intestinal mucosa. Bulk TiO2 exposure had no effect on the histological structure of the intestine but increased liver damage indices and erythrocytic DNA damage compared to the controls indicating dissolved form of TiO2 is not biologically inert. More research efforts are needed to generate in vivo toxicity data on realistic levels of nano-TiO2 and bulk TiO2 for environmental risk assessments.
Collapse
Affiliation(s)
- W A P M De Silva
- Department of Zoology and Environmental Management, Faculty of Science, University of Kelaniya, Kelaniya, GQ 11600, Sri Lanka
| | - A Pathiratne
- Department of Zoology and Environmental Management, Faculty of Science, University of Kelaniya, Kelaniya, GQ 11600, Sri Lanka.
| |
Collapse
|
37
|
Dhillon VS, Deo P, Fenech M. Effect of Selenium and Lycopene on Radiation Sensitivity in Prostate Cancer Patients Relative to Controls. Cancers (Basel) 2023; 15:cancers15030979. [PMID: 36765936 PMCID: PMC9913686 DOI: 10.3390/cancers15030979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/28/2023] [Accepted: 02/02/2023] [Indexed: 02/05/2023] Open
Abstract
Almost half of prostate cancer (PC) patients receive radiation therapy as primary curative treatment. In spite of advances in our understanding of both nutrition and the genomics of prostate cancer, studies on the effects of nutrients on the radiation sensitivity of PC patients are lacking. We tested the hypothesis that low plasma levels of selenium and lycopene have detrimental effects on ionising radiation-induced DNA damage in prostate cancer patients relative to healthy individuals. The present study was performed in 106 PC patients and 132 age-matched controls. We found that the radiation-induced micronucleus (MN) and nuclear buds (NBuds) frequencies were significantly higher in PC patients with low selenium (p = 0.008 and p = 0.0006 respectively) or low lycopene (p = 0.007 and p = 0.0006 respectively) levels compared to the controls. The frequency of NBuds was significantly higher (p < 0.0001) in PC patients who had low levels of both selenium and lycopene compared to (i) controls with low levels of both selenium and lycopene and (ii) PC patients with high levels of both selenium and lycopene (p = 0.0001). Our results support the hypothesis that low selenium and lycopene levels increase the sensitivity to radiation-induced DNA damage and suggest that nutrition-based treatment strategies are important to minimise the DNA-damaging effects in PC patients receiving radiotherapy.
Collapse
Affiliation(s)
- Varinderpal S. Dhillon
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia
- Correspondence: (V.S.D.); (M.F.)
| | - Permal Deo
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia
| | - Michael Fenech
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia
- Genome Health Foundation, North Brighton 5048, Australia
- Correspondence: (V.S.D.); (M.F.)
| |
Collapse
|
38
|
Castanha APM, Almeida-Terassi LM, Guardado-Yordi E, Matos MJ, Maistro EL. Cytogenotoxicity assessment of 3-(3,4-dihydroxyphenyl)-7,8-dihydroxycoumarin on HepG2/C3A cells and leukocytes. J Appl Toxicol 2023; 43:323-334. [PMID: 36000810 DOI: 10.1002/jat.4384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/17/2022] [Accepted: 08/21/2022] [Indexed: 01/17/2023]
Abstract
3-(3,4-Dihydroxyphenyl)-7,8-dihydroxycoumarin is a newly synthesized coumarin derivative with a potent antioxidant effect. The aim of the present study is to investigate the safety of this compound, determining the in vitro cytotoxic and genotoxic in human peripheral blood mononuclear cells (PBMC) and in HepG2/C3A cells. Cell viability has been investigated by the trypan blue staining test and MTT assay and the genotoxicity by the comet assay and micronucleus test, using concentrations between 0.01 and 10 μg/ml. The compound proved to be noncytotoxic in both cell lines, at all tested concentrations, protecting the cells from the DNA damage. In addition, this molecule does not show clastogenic/aneugenic effects when performing the micronucleus test with cytokinesis blockade. Based on the obtained data, and the conditions of the experiments, we can conclude that the 3-(3,4-dihydroxyphenyl)-7,8-dihydroxycoumarin is a safe molecule up to a concentration of 10 μg/ml, which encourages further studies aiming to explore its potential as a drug candidate.
Collapse
Affiliation(s)
| | | | | | - Maria João Matos
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, Santiago de Compostela, Spain.,CIQUP/Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Edson Luis Maistro
- Marilia Medical School, FAMEMA, Marilia, Brazil.,Faculty of Philosophy and Sciences, Speech and Hearing Therapy Department, São Paulo State University-UNESP, Marília, Brazil
| |
Collapse
|
39
|
Guidi P, Bernardeschi M, Palumbo M, Buttino I, Vitiello V, Scarcelli V, Chiaretti G, Fiorati A, Pellegrini D, Pontorno L, Bonciani L, Punta C, Corsi I, Frenzilli G. Eco-Friendly Engineered Nanomaterials Coupled with Filtering Fine-Mesh Net as a Promising Tool to Remediate Contaminated Freshwater Sludges: An Ecotoxicity Investigation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:396. [PMID: 36770355 PMCID: PMC9920148 DOI: 10.3390/nano13030396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
The use of eco-friendly engineered nanomaterials represents a recent solution for an effective and safe treatment of contaminated dredging sludge. In this study, an eco-designed engineered material based on cross-linked nanocellulose (CNS) was applied for the first time to decontaminate a real matrix from heavy metals (namely Zn, Ni, Cu, and Fe) and other undesired elements (mainly Ba and As) in a lab-scale study, with the aim to design a safe solution for the remediation of contaminated matrices. Contaminated freshwater sludge was treated with CNS coupled with a filtering fine-mesh net, and the obtained waters were tested for acute and sublethal toxicity. In order to check the safety of the proposed treatment system, toxicity tests were conducted by exposing the bacterium Aliivibrio fischeri and the crustacean Heterocypris incongruens, while subtoxicity biomarkers such as lysosomal membrane stability, genetic, and chromosomal damage assessment were performed on the freshwater bivalve Dreissena polymorpha. Dredging sludge was found to be genotoxic, and such genotoxicity was mitigated by the combined use of CNS and a filtering fine-mesh net. Chemical analyses confirmed the results by highlighting the abetment of target contaminants, indicating the present model as a promising tool in freshwater sludge nanoremediation.
Collapse
Affiliation(s)
- Patrizia Guidi
- Department of Clinical and Experimental Medicine, Section of Applied Biology and Genetics, and INSTM Local Unit, University of Pisa, 56126 Pisa, Italy
| | - Margherita Bernardeschi
- Department of Clinical and Experimental Medicine, Section of Applied Biology and Genetics, and INSTM Local Unit, University of Pisa, 56126 Pisa, Italy
| | - Mara Palumbo
- Department of Clinical and Experimental Medicine, Section of Applied Biology and Genetics, and INSTM Local Unit, University of Pisa, 56126 Pisa, Italy
| | - Isabella Buttino
- Italian Institute for Environmental Protection and Research (ISPRA), Via del Cedro, 38, 57123 Livorno, Italy
| | - Valentina Vitiello
- Italian Institute for Environmental Protection and Research (ISPRA), Via del Cedro, 38, 57123 Livorno, Italy
| | - Vittoria Scarcelli
- Department of Clinical and Experimental Medicine, Section of Applied Biology and Genetics, and INSTM Local Unit, University of Pisa, 56126 Pisa, Italy
| | - Gianluca Chiaretti
- Italian Institute for Environmental Protection and Research (ISPRA), Via del Cedro, 38, 57123 Livorno, Italy
| | - Andrea Fiorati
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”, and INSTM Local Unit, Politecnico di Milano, 20131 Milano, Italy
| | - David Pellegrini
- Italian Institute for Environmental Protection and Research (ISPRA), Via del Cedro, 38, 57123 Livorno, Italy
| | - Lorenzo Pontorno
- Biochemie Lab. S.r.l, Via di Limite 27G, 50013 Campi Bisenzio, Italy
| | - Lisa Bonciani
- Biochemie Lab. S.r.l, Via di Limite 27G, 50013 Campi Bisenzio, Italy
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta”, and INSTM Local Unit, Politecnico di Milano, 20131 Milano, Italy
| | - Ilaria Corsi
- Department of Physical, Earth and Environmental Sciences, and INSTM Local Unit, University of Siena, 53100 Siena, Italy
| | - Giada Frenzilli
- Department of Clinical and Experimental Medicine, Section of Applied Biology and Genetics, and INSTM Local Unit, University of Pisa, 56126 Pisa, Italy
| |
Collapse
|
40
|
Ellwanger JH, Kulmann-Leal B, Ziliotto M, Chies JAB. HIV Infection, Chromosome Instability, and Micronucleus Formation. Viruses 2023; 15:155. [PMID: 36680195 PMCID: PMC9867034 DOI: 10.3390/v15010155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/28/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023] Open
Abstract
Genome integrity is critical for proper cell functioning, and chromosome instability can lead to age-related diseases, including cancer and neurodegenerative disorders. Chromosome instability is caused by multiple factors, including replication stress, chromosome missegregation, exposure to pollutants, and viral infections. Although many studies have investigated the effects of environmental or lifestyle genotoxins on chromosomal integrity, information on the effects of viral infections on micronucleus formation and other chromosomal aberrations is still limited. Currently, HIV infection is considered a chronic disease treatable by antiretroviral therapy (ART). However, HIV-infected individuals still face important health problems, such as chronic inflammation and age-related diseases. In this context, this article reviews studies that have evaluated genomic instability using micronucleus assays in the context of HIV infection. In brief, HIV can induce chromosome instability directly through the interaction of HIV proteins with host DNA and indirectly through chronic inflammation or as a result of ART use. Connections between HIV infection, immunosenescence and age-related disease are discussed in this article. The monitoring of HIV-infected individuals should consider the increased risk of chromosome instability, and lifestyle interventions, such as reduced exposure to genotoxins and an antioxidant-rich diet, should be considered. Therapies to reduce chronic inflammation in HIV infection are needed.
Collapse
Affiliation(s)
- Joel Henrique Ellwanger
- Postgraduate Program in Genetics and Molecular Biology (PPGBM), Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, Brazil
| | | | | | - José Artur Bogo Chies
- Postgraduate Program in Genetics and Molecular Biology (PPGBM), Laboratory of Immunobiology and Immunogenetics, Department of Genetics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 91501-970, Brazil
| |
Collapse
|
41
|
Araujo JRDS, de Barros Arcoverde JV, de Farias Silva MG, Barros de Santana ER, da Silva PA, de Sousa S, Araujo, Santos N, de Almeida PM, de Andrade Lima CS, Benko-Iseppon AM, Aracati Padilha RJS, Alves M, Brasileiro-Vidal AC. Antioxidant and in vitro cytogenotoxic properties of Amburana cearensis (Allemão) A.C.Sm. leaf extract. Drug Chem Toxicol 2023; 46:104-112. [PMID: 34906022 DOI: 10.1080/01480545.2021.2011313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Amburana cearensis leaves have been used in folk medicine to treat respiratory diseases and inflammations. This study aimed to evaluate the biological potential of A. cearensis leaves by antioxidant and in vitro cytogenotoxic analyses of ethanolic crude extract (EE) and its fractions in healthy human cells. The EE was obtained by percolation, followed by fractionation using dichloromethane, cyclohexane, ethyl acetate (EtOAc), and methanol (MeOH) as organic solvents. Extract and all fractions were evaluated for their antioxidant potential by DPPH and reducing power tests. In vitro cytotoxic activity was determined in human peripheral blood mononuclear cells by MTT assay for the extract, EtOAc and MeOH fractions. In turn, the genotoxic activity was determined in human lymphocytes by the Cytokinesis Block Micronucleus assay only for the EtOAc fraction. Only EtOAc fraction was analyzed via gas chromatography coupled to mass spectrometry due to its higher biological activity. Considering the antioxidant potential, the EtOAc fraction was most effective in DPPH (EC50 43.37 µg/mL) and reducing power (EC50 89.80 µg/mL) assays. GC-MS analysis of the EtOAc fraction led to the identification of guaiacol, 2,3-dihydro-benzofuran, 2-methoxy-4-vinylphenol, isovanillic acid methyl ester, 4-hydroxybenzaldehyde, and 4-(ethoxymethyl)-phenol. The EE (400-1000 µg/mL), EtOAc (≤150 µg/mL) and MeOH (50 and 150-600 µg/mL) fractions were not cytotoxic by MTT test. Additionally, the EtOAc fraction (100-400 µg/mL) did not induce significant genotoxic damage. Concentrations of the EtOAc fraction with antioxidant activity showed no cytotoxicity, nor genotoxicity potential, indicating them as a nontoxic natural antioxidant source.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Araujo
- Departamento de Genética, Universidade Federal de Pernambuco, Recife, Brazil
| | - Neide Santos
- Departamento de Genética, Universidade Federal de Pernambuco, Recife, Brazil
| | | | | | | | | | - Marccus Alves
- Departamento de Botânica, Universidade Federal de Pernambuco, Recife, Brazil
| | | |
Collapse
|
42
|
Aschacher T, Geisler D, Lenz V, Aschacher O, Winkler B, Schaefer AK, Mitterbauer A, Wolf B, Enzmann FK, Messner B, Laufer G, Ehrlich MP, Grabenwöger M, Bergmann M. Impacts of Telomeric Length, Chronic Hypoxia, Senescence, and Senescence-Associated Secretory Phenotype on the Development of Thoracic Aortic Aneurysm. Int J Mol Sci 2022; 23:ijms232415498. [PMID: 36555139 PMCID: PMC9779024 DOI: 10.3390/ijms232415498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/18/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
Thoracic aortic aneurysm (TAA) is an age-related and life-threatening vascular disease. Telomere shortening is a predictor of age-related diseases, and its progression is associated with premature vascular disease. The aim of the present work was to investigate the impacts of chronic hypoxia and telomeric DNA damage on cellular homeostasis and vascular degeneration of TAA. We analyzed healthy and aortic aneurysm specimens (215 samples) for telomere length (TL), chronic DNA damage, and resulting changes in cellular homeostasis, focusing on senescence and apoptosis. Compared with healthy thoracic aorta (HTA), patients with tricuspid aortic valve (TAV) showed telomere shortening with increasing TAA size, in contrast to genetically predisposed bicuspid aortic valve (BAV). In addition, TL was associated with chronic hypoxia and telomeric DNA damage and with the induction of senescence-associated secretory phenotype (SASP). TAA-TAV specimens showed a significant difference in SASP-marker expression of IL-6, NF-κB, mTOR, and cell-cycle regulators (γH2AX, Rb, p53, p21), compared to HTA and TAA-BAV. Furthermore, we observed an increase in CD163+ macrophages and a correlation between hypoxic DNA damage and the number of aortic telocytes. We conclude that chronic hypoxia is associated with telomeric DNA damage and the induction of SASP in a diseased aortic wall, promising a new therapeutic target.
Collapse
Affiliation(s)
- Thomas Aschacher
- Department of Cardiovascular Surgery, Clinic Floridsdorf and Karl Landsteiner Institute for Cardio-Vascular Research, 1210 Vienna, Austria
- Department of Cardiac Surgery, Medical University of Vienna, 1090 Vienna, Austria
- Correspondence: ; Tel.: +43-1-277-00-74316
| | - Daniela Geisler
- Department of Cardiovascular Surgery, Clinic Floridsdorf and Karl Landsteiner Institute for Cardio-Vascular Research, 1210 Vienna, Austria
| | - Verena Lenz
- Department of Cardiovascular Surgery, Clinic Floridsdorf and Karl Landsteiner Institute for Cardio-Vascular Research, 1210 Vienna, Austria
| | - Olivia Aschacher
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Bernhard Winkler
- Department of Cardiovascular Surgery, Clinic Floridsdorf and Karl Landsteiner Institute for Cardio-Vascular Research, 1210 Vienna, Austria
- Faculty of Medicine, Sigmund Freud Private University of Vienna, 1030 Vienna, Austria
| | | | - Andreas Mitterbauer
- Department of General Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Brigitte Wolf
- Department of General Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Florian K. Enzmann
- Department of Vascular Surgery, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Barbara Messner
- Department of Cardiac Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Günther Laufer
- Department of Cardiac Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Marek P. Ehrlich
- Department of Cardiac Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Martin Grabenwöger
- Department of Cardiovascular Surgery, Clinic Floridsdorf and Karl Landsteiner Institute for Cardio-Vascular Research, 1210 Vienna, Austria
- Faculty of Medicine, Sigmund Freud Private University of Vienna, 1030 Vienna, Austria
| | - Michael Bergmann
- Department of General Surgery, Medical University of Vienna, 1090 Vienna, Austria
| |
Collapse
|
43
|
Centromere defects, chromosome instability, and cGAS-STING activation in systemic sclerosis. Nat Commun 2022; 13:7074. [PMID: 36400785 PMCID: PMC9674829 DOI: 10.1038/s41467-022-34775-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/04/2022] [Indexed: 11/21/2022] Open
Abstract
Centromere defects in Systemic Sclerosis (SSc) have remained unexplored despite the fact that many centromere proteins were discovered in patients with SSc. Here we report that lesion skin fibroblasts from SSc patients show marked alterations in centromeric DNA. SSc fibroblasts also show DNA damage, abnormal chromosome segregation, aneuploidy (only in diffuse cutaneous (dcSSc)) and micronuclei (in all types of SSc), some of which lose centromere identity while retaining centromere DNA sequences. Strikingly, we find cytoplasmic "leaking" of centromere proteins in limited cutaneous SSc (lcSSc) fibroblasts. Cytoplasmic centromere proteins co-localize with antigen presenting MHC Class II molecules, which correlate precisely with the presence of anti-centromere antibodies. CENPA expression and micronuclei formation correlate highly with activation of the cGAS-STING/IFN-β pathway as well as markers of reactive oxygen species (ROS) and fibrosis, ultimately suggesting a link between centromere alterations, chromosome instability, SSc autoimmunity, and fibrosis.
Collapse
|
44
|
Chávez-Bustos EA, Morales-González A, Anguiano-Robledo L, Madrigal-Santillán EO, Valadez-Vega C, Lugo-Magaña O, Mendoza-Pérez JA, Fregoso-Aguilar TA. Bauhinia forficata Link, Antioxidant, Genoprotective, and Hypoglycemic Activity in a Murine Model. PLANTS (BASEL, SWITZERLAND) 2022; 11:3052. [PMID: 36432781 PMCID: PMC9692633 DOI: 10.3390/plants11223052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/20/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Bauhinia forficata L. is a tree used in alternative medicine as an anti-diabetic agent, with little scientific information about its pharmacological properties. The hypoglycemic, antioxidant, and genoprotective activities of a methanolic extract of B. forficata leaves and stems combined were investigated in mice treated with streptozotocin (STZ). Secondary metabolites were determined by qualitative phytochemistry. In vitro antioxidant activity was determined by the DPPH method at four concentrations of the extract. The genoprotective activity was evaluated in 3 groups of mice: control, anthracene (10 mg/kg), and anthracene + B. forficata (500 mg/kg) and the presence of micronuclei in peripheral blood was measured for 2 weeks. To determine the hypoglycemic activity, the crude extract was prepared in a suspension and administered (500 mg/kg, i.g.) in previously diabetic mice with STZ (120 mg/kg, i.p.), measuring blood glucose levels every week as well as the animals' body weight for six weeks. The extract showed good antioxidant activity and caused a decrease in the number of micronuclei. The diabetic mice + B. forficata presented hypoglycemic effects in the third week of treatment, perhaps due to its secondary metabolites. Therefore, B. forficata is a candidate for continued use at the ethnomedical level as an adjuvant to allopathic therapy.
Collapse
Affiliation(s)
- Erika Anayetzi Chávez-Bustos
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Department de Fisiología. Av., Wilfrido Massieu S/N, Col. Nueva Industrial Vallejo, Alcaldía Gustavo A. Madero, Ciudad de México C.P. 07700, Mexico
| | - Angel Morales-González
- Escuela Superior de Cómputo, Instituto Politécnico Nacional, Av. Juan de Dios Bátiz S/N Esquina Miguel Othón de Mendizabal, Unidad Profesional Adolfo López Mateos, Ciudad de México C.P. 07738, Mexico
| | - Liliana Anguiano-Robledo
- Escuela Superior de Medicina, Laboratorio de Farmacología Molecular, Instituto Politécnico Nacional, Alcaldía Miguel Hidalgo, Ciudad de México C.P. 11340, Mexico
| | - Eduardo Osiris Madrigal-Santillán
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, México, Plan de San Luis y Díaz Mirón, Col. Casco de Santo Tomás, Alcaldía. Miguel Hidalgo, Ciudad de México C.P. 11340, Mexico
| | - Cármen Valadez-Vega
- Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, San Agustín Tlaxiaca C.P. 42080, Mexico
| | - Olivia Lugo-Magaña
- Preparatoria Número 1, Universidad Autónoma del Estado de Hidalgo, Av. Benito Juárez S/N, Constitución, Pachuca de Soto C.P. 42060, Mexico
| | - Jorge Alberto Mendoza-Pérez
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Department de Ingeniería en Sistemas Ambientales. Av., Wilfrido Massieu S/N, Col. Nueva Industrial Vallejo, Alcaldía Gustavo A. Madero, Ciudad de México C.P. 07700, Mexico
| | - Tomás Alejandro Fregoso-Aguilar
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Department de Fisiología. Av., Wilfrido Massieu S/N, Col. Nueva Industrial Vallejo, Alcaldía Gustavo A. Madero, Ciudad de México C.P. 07700, Mexico
| |
Collapse
|
45
|
Molz P, Brand C, Schlickmann DDS, Steffens JP, Pohl HH, Renner JDP, Franke SIR. Micronuclei frequency and renal function markers in gym members: The moderating role of supplement intake. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 96:104009. [PMID: 36343891 DOI: 10.1016/j.etap.2022.104009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 10/26/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
This research investigates the moderating role of dietary supplement intake in the relationship between MNi frequency and renal markers in gym members. A cross-sectional study was carried out with gym members of all sexes, between 20 and 59 years of age, with data on supplement use obtained via questionnaire. Renal markers (urea and creatinine) were assessed by blood collection. Buccal mucosa cells were collected to assess MNi frequency by buccal micronucleus cytome assay. Moderation was tested using multiple linear regression models by PROCESS macro for SPSS. Results showed significant interactions for supplement use (p = 0.001) and supplement type, ergogenic (p = 0.003) and sports food (p = 0.003), with MNi for urea. For creatinine, only supplement use showed interaction with MNi frequency (p = 0.048). In conclusion, supplement intake is a moderator in the relationship between MNi frequency and renal function markers in gym members.
Collapse
Affiliation(s)
- Patrícia Molz
- Graduate Program in Health Promotion, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil; Laboratory of Experimental Nutrition, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil; Graduate Program in Biosciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Rio Grande do Sul, Brazil
| | - Caroline Brand
- Graduate Program in Health Promotion, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Diene da Silva Schlickmann
- Graduate Program in Health Promotion, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil; Laboratory of Experimental Nutrition, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Juliana Priebe Steffens
- Laboratory of Experimental Nutrition, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Hildegard Hedwig Pohl
- Graduate Program in Health Promotion, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Jane Dagmar Pollo Renner
- Graduate Program in Health Promotion, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil
| | - Silvia Isabel Rech Franke
- Graduate Program in Health Promotion, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil; Laboratory of Experimental Nutrition, Department of Health Science, University of Santa Cruz do Sul (UNISC), Santa Cruz do Sul, Rio Grande do Sul, Brazil.
| |
Collapse
|
46
|
Dacus D, Stancic S, Pollina SR, Rifrogiate E, Palinski R, Wallace NA. Beta Human Papillomavirus 8 E6 Induces Micronucleus Formation and Promotes Chromothripsis. J Virol 2022; 96:e0101522. [PMID: 36129261 PMCID: PMC9555153 DOI: 10.1128/jvi.01015-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Cutaneous beta genus human papillomaviruses (β-HPVs) are suspected to promote the development of nonmelanoma skin cancer (NMSC) by destabilizing the host genome. Multiple studies have established the genome destabilizing capacities of β-HPV proteins E6 and E7 as a cofactor with UV. However, the E6 protein from β-HPV8 (HPV8 E6) induces tumors in mice without UV exposure. Here, we examined a UV-independent mechanism of HPV8 E6-induced genome destabilization. We showed that HPV8 E6 reduced the abundance of anaphase bridge resolving helicase, Bloom syndrome protein (BLM). The diminished BLM was associated with increased segregation errors and micronuclei. These HPV8 E6-induced micronuclei had disordered micronuclear envelopes but retained replication and transcription competence. HPV8 E6 decreased antiproliferative responses to micronuclei and time-lapse imaging revealed HPV8 E6 promoted cells with micronuclei to complete mitosis. Finally, whole-genome sequencing revealed that HPV8 E6 induced chromothripsis in nine chromosomes. These data provide insight into mechanisms by which HPV8 E6 induces genome instability independent of UV exposure. IMPORTANCE Some beta genus human papillomaviruses (β-HPVs) may promote skin carcinogenesis by inducing mutations in the host genome. Supporting this, the E6 protein from β-HPV8 (8 E6) promotes skin cancer in mice with or without UV exposure. Many mechanisms by which 8 E6 increases mutations caused by UV have been elucidated, but less is known about how 8 E6 induces mutations without UV. We address that knowledge gap by showing that 8 E6 causes mutations stemming from mitotic errors. Specifically, 8 E6 reduces the abundance of BLM, a helicase that resolves and prevents anaphase bridges. This hinders anaphase bridge resolution and increases their frequency. 8 E6 makes the micronuclei that can result from anaphase bridges more common. These micronuclei often have disrupted envelopes yet retain localization of nuclear-trafficked proteins. 8 E6 promotes the growth of cells with micronuclei and causes chromothripsis, a mutagenic process where hundreds to thousands of mutations occur in a chromosome.
Collapse
Affiliation(s)
- Dalton Dacus
- Division of Biology, Kansas State Universitygrid.36567.31, Manhattan, Kansas, USA
| | - Steven Stancic
- Veterinary Diagnostic Laboratory, Kansas State Universitygrid.36567.31, Manhattan, Kansas, USA
| | - Sarah R Pollina
- Division of Biology, Kansas State Universitygrid.36567.31, Manhattan, Kansas, USA
| | - Elizabeth Rifrogiate
- Division of Biology, Kansas State Universitygrid.36567.31, Manhattan, Kansas, USA
| | - Rachel Palinski
- Veterinary Diagnostic Laboratory, Kansas State Universitygrid.36567.31, Manhattan, Kansas, USA
- Diagnostic Medicine/Pathobiology, Kansas State Universitygrid.36567.31, Manhattan, Kansas, USA
| | - Nicholas A Wallace
- Division of Biology, Kansas State Universitygrid.36567.31, Manhattan, Kansas, USA
| |
Collapse
|
47
|
Reece AS, Hulse GK. Cannabis- and Substance-Related Epidemiological Patterns of Chromosomal Congenital Anomalies in Europe: Geospatiotemporal and Causal Inferential Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph191811208. [PMID: 36141481 PMCID: PMC9517644 DOI: 10.3390/ijerph191811208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/27/2022] [Accepted: 08/30/2022] [Indexed: 05/16/2023]
Abstract
INTRODUCTION Laboratory data link cannabinoid exposure to chromosomal mis-segregation errors. Recent epidemiological reports confirm this link and raise concern that elevated chromosomal congenital anomaly rates (CCAR) may be occurring in Europe which is experiencing increased cannabis use, daily intensity of use and cannabinoid potency. METHODS CCAR data from Eurocat. Drug use data from the European Monitoring Centre for Drugs and Drug Addiction. Income from World Bank. Bivariate, multivariate, panel and geotemporospatial regressions analyzed. Inverse probability weighting of panel models and E-values used as major quantitative causal inferential methodologies. RESULTS In countries where daily cannabis use was rising the trend for CCA's was upwards whereas in those where daily use was declining it was usually downwards (p = 0.0002). In inverse probability weighted panel models terms for cannabis metrics were significant for chromosomal disorders, trisomies 21 and 13 and Klinefelters syndrome from p < 2.2 × 10-16. In spatiotemporal models cannabis terms were positive and significant for chromosomal disorders, genetic disorders, trisomies 21, 18 and 13, Turners and Klinefelters syndromes from 4.28 × 10-6, 5.79 × 10-12, 1.26 × 10-11, 1.12 × 10-7, 7.52 × 10-9, 7.19 × 10-7 and 7.27 × 10-7. 83.7% of E-value estimates and 74.4% of minimum E-values (mEV) > 9 including four values each at infinity. Considering E-values: the sensitivity of the individual disorders was trisomy 13 > trisomy 21 > Klinefelters > chromosomal disorders > Turners > genetic syndromes > trisomy 18 with mEV's 1.91 × 1025 to 59.31; and daily cannabis use was the most powerful covariate (median mEV = 1.91 × 1025). CONCLUSIONS Data indicate that, consistent with reports from Hawaii, Canada, Colorado, Australia and USA, CCARs are causally and spatiotemporally related to metrics and intensity of cannabis exposure, directly impact 645 MB (21.5%) of the human genome and may implicate epigenomic-centrosomal mechanisms.
Collapse
Affiliation(s)
- Albert Stuart Reece
- Division of Psychiatry, University of Western Australia, Crawley, WA 6009, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia
- Correspondence:
| | - Gary Kenneth Hulse
- Division of Psychiatry, University of Western Australia, Crawley, WA 6009, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia
| |
Collapse
|
48
|
Goldman JE. Alzheimer Type I Astrocytes: Still Mysterious Cells. J Neuropathol Exp Neurol 2022; 81:588-595. [PMID: 35689655 DOI: 10.1093/jnen/nlac043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Over 100 years ago, von Hösslein and Alzheimer described enlarged and multinucleated astrocytes in the brains of patients with Wilson disease. These odd astrocytes, now well known to neuropathologists, are present in a large variety of neurological disorders, and yet the mechanisms underlying their generation and their functional attributes are still not well understood. They undergo abnormal mitoses and fail to accomplish cytokinesis, resulting in multinucleation. Oxidative stress, hypoxia, and inflammation may be contributing pathologies to generate these astrocytes. The abnormal mitoses occur from changes in cell shape, the accumulation of cytoplasmic proteins, and the mislocalization of many of the important molecules whose coordination is necessary for proper mitotic spindle formation. Modern technologies will be able to characterize their abnormalities and solve century old questions of their form and function.
Collapse
Affiliation(s)
- James E Goldman
- From the Division of Neuropathology, Department of Pathology & Cell Biology, Columbia University Vagelos College of Physicians and Surgeons and The Taub Institute for Research on Alzheimer's Disease and Aging, NY-Presbyterian Columbia University Irving Medical Center, New York, New York, USA
| |
Collapse
|
49
|
Mohammed MR, El-Bahkery AM, Shedid SM. The Influence of Different γ-Irradiation Patterns on Factors that May Affect Cell Cycle Progression in Male Rats. Dose Response 2022; 20:15593258221117898. [PMID: 35982824 PMCID: PMC9379971 DOI: 10.1177/15593258221117898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Most studies of the biological effects of ionizing radiation have been done on a
single acute dose, while clinically and environmentally exposures occur under
chronic/repetitive conditions. It is important to study effects of different
patterns of ionizing radiation. In this study, a rat model was used to compare
the effects of repetitive and acute exposure. Groups: (I) control, (II, III)
were exposed to fractionated doses (1.5 GyX4) and (2 GyX4), respectively/24h
interval, and (IV, V) were exposed to 6 Gy and 8 Gy of whole-body gamma
irradiation, respectively. The gene expression of MAPT and tau phosphorylation
increased in all irradiated groups but the gene expression of PKN not affected.
TGFβ% increased at dose of 2 GyX4 only. In addition, the cell cycle was arrested
in S phase. Micronucleus (MN) increased and cell proliferation decreased. In
conclusion, the dose and pattern of ionizing radiation do not affect the MAPT
and PKN gene expression, but TGF-β, p-tau, MN assay and cell proliferation are
significantly affected. The dose of 2 GyX4 showed distinctive effect. Repetitive
exposure may increase TGF-β%, which causes radio-resistance and, G2/M delay.
Thus, the cell cycle could be regulated in a different manner according to the
dose and pattern of irradiation.
Collapse
|
50
|
Giansanti C, Manzini V, Dickmanns A, Dickmanns A, Palumbieri MD, Sanchi A, Kienle SM, Rieth S, Scheffner M, Lopes M, Dobbelstein M. MDM2 binds and ubiquitinates PARP1 to enhance DNA replication fork progression. Cell Rep 2022; 39:110879. [PMID: 35649362 DOI: 10.1016/j.celrep.2022.110879] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 04/15/2022] [Accepted: 05/05/2022] [Indexed: 11/03/2022] Open
Abstract
The MDM2 oncoprotein antagonizes the tumor suppressor p53 by physical interaction and ubiquitination. However, it also sustains the progression of DNA replication forks, even in the absence of functional p53. Here, we show that MDM2 binds, inhibits, ubiquitinates, and destabilizes poly(ADP-ribose) polymerase 1 (PARP1). When cellular MDM2 levels are increased, this leads to accelerated progression of DNA replication forks, much like pharmacological inhibition of PARP1. Conversely, overexpressed PARP1 restores normal fork progression despite elevated MDM2. Strikingly, MDM2 profoundly reduces the frequency of fork reversal, revealed as four-way junctions through electron microscopy. Depletion of RECQ1 or the primase/polymerase (PRIMPOL) reverses the MDM2-mediated acceleration of the nascent DNA elongation rate. MDM2 also increases the occurrence of micronuclei, and it exacerbates camptothecin-induced cell death. In conclusion, high MDM2 levels phenocopy PARP inhibition in modulation of fork restart, representing a potential vulnerability of cancer cells.
Collapse
Affiliation(s)
- Celeste Giansanti
- Institute of Molecular Oncology, Göttingen Center of Molecular Biosciences (GZMB), University Medical Center Göttingen, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany
| | - Valentina Manzini
- Institute of Molecular Oncology, Göttingen Center of Molecular Biosciences (GZMB), University Medical Center Göttingen, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany
| | - Antje Dickmanns
- Institute of Molecular Oncology, Göttingen Center of Molecular Biosciences (GZMB), University Medical Center Göttingen, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany
| | - Achim Dickmanns
- Department of Molecular Structural Biology, Institute of Microbiology & Genetics, GZMB, Georg-August-University Göttingen, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany
| | - Maria Dilia Palumbieri
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Andrea Sanchi
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | | | - Sonja Rieth
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Martin Scheffner
- Department of Biology, University of Konstanz, 78457 Konstanz, Germany
| | - Massimo Lopes
- Institute of Molecular Cancer Research, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Matthias Dobbelstein
- Institute of Molecular Oncology, Göttingen Center of Molecular Biosciences (GZMB), University Medical Center Göttingen, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany.
| |
Collapse
|