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Ya A, Deng C, Godek KM. Cell Competition Eliminates Aneuploid Human Pluripotent Stem Cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.08.593217. [PMID: 38766106 PMCID: PMC11100710 DOI: 10.1101/2024.05.08.593217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Human pluripotent stem cells (hPSCs) maintain diploid populations for generations despite a persistently high rate of mitotic errors that cause aneuploidy, or chromosome imbalances. Consequently, to maintain genome stability, aneuploidy must inhibit hPSC proliferation, but the mechanisms are unknown. Here, we surprisingly find that homogeneous aneuploid populations of hPSCs proliferate unlike aneuploid non-transformed somatic cells. Instead, in mosaic populations, cell non-autonomous competition between neighboring diploid and aneuploid hPSCs eliminates less fit aneuploid cells. Aneuploid hPSCs with lower Myc or higher p53 levels relative to diploid neighbors are outcompeted but conversely gain a selective advantage when Myc and p53 relative abundance switches. Thus, although hPSCs frequently missegregate chromosomes and inherently tolerate aneuploidy, Myc- and p53-driven cell competition preserves their genome integrity. These findings have important implications for the use of hPSCs in regenerative medicine and for how diploid human embryos are established despite the prevalence of aneuploidy during early development.
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Affiliation(s)
- Amanda Ya
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
- Dartmouth Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Chenhui Deng
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
- Dartmouth Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Kristina M. Godek
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
- Dartmouth Cancer Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
- Lead contact
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Arya SB, Collie SP, Xu Y, Fernandez M, Sexton JZ, Mosalaganti S, Coulombe PA, Parent CA. Neutrophils secrete exosome-associated DNA to resolve sterile acute inflammation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.21.590456. [PMID: 38712240 PMCID: PMC11071349 DOI: 10.1101/2024.04.21.590456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Acute inflammation, characterized by a rapid influx of neutrophils, is a protective response that can lead to chronic inflammatory diseases when left unresolved. Secretion of LTB 4 -containing exosomes is required for effective neutrophil infiltration during inflammation. In this study, we show that neutrophils release nuclear DNA in a non-lytic, rapid, and repetitive manner, via a mechanism distinct from suicidal NET release and cell death. The packaging of nuclear DNA occurs in the lumen of nuclear envelope (NE)-derived multivesicular bodies (MVBs) that harbor the LTB 4 synthesizing machinery and is mediated by the lamin B receptor (LBR) and chromatin decondensation. Disruption of secreted exosome-associated DNA (SEAD) in a model of sterile inflammation in mouse skin amplifies and prolongs the presence of neutrophils, impeding the onset of resolution. Together, these findings advance our understanding of neutrophil functions during inflammation and the physiological significance of NETs, with implications for novel treatments for inflammatory disorders.
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Yoo M, Haydak JC, Azeloglu EU, Lee K, Gusella GL. cGAS Activation Accelerates the Progression of Autosomal Dominant Polycystic Kidney Disease. J Am Soc Nephrol 2024; 35:466-482. [PMID: 38247039 PMCID: PMC11000720 DOI: 10.1681/asn.0000000000000305] [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: 02/02/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024] Open
Abstract
SIGNIFICANCE STATEMENT The renal immune infiltrate observed in autosomal polycystic kidney disease contributes to the evolution of the disease. Elucidating the cellular mechanisms underlying the inflammatory response could help devise new therapeutic strategies. Here, we provide evidence for a mechanistic link between the deficiency polycystin-1 and mitochondrial homeostasis and the activation of the cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS)/stimulator of the interferon genes (STING) pathway. Our data identify cGAS as an important mediator of renal cystogenesis and suggest that its inhibition may be useful to slow down the disease progression. BACKGROUND Immune cells significantly contribute to the progression of autosomal dominant polycystic kidney disease (ADPKD), the most common genetic disorder of the kidney caused by the dysregulation of the Pkd1 or Pkd2 genes. However, the mechanisms triggering the immune cells recruitment and activation are undefined. METHODS Immortalized murine collecting duct cell lines were used to dissect the molecular mechanism of cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS) activation in the context of genotoxic stress induced by Pkd1 ablation. We used conditional Pkd1 and knockout cGas-/- genetic mouse models to confirm the role of cGAS/stimulator of the interferon genes (STING) pathway activation on the course of renal cystogenesis. RESULTS We show that Pkd1 -deficient renal tubular cells express high levels of cGAS, the main cellular sensor of cytosolic nucleic acid and a potent stimulator of proinflammatory cytokines. Loss of Pkd1 directly affects cGAS expression and nuclear translocation, as well as activation of the cGAS/STING pathway, which is reversed by cGAS knockdown or functional pharmacological inhibition. These events are tightly linked to the loss of mitochondrial structure integrity and genotoxic stress caused by Pkd1 depletion because they can be reverted by the potent antioxidant mitoquinone or by the re-expression of the polycystin-1 carboxyl terminal tail. The genetic inactivation of cGAS in a rapidly progressing ADPKD mouse model significantly reduces cystogenesis and preserves normal organ function. CONCLUSIONS Our findings indicate that the activation of the cGAS/STING pathway contributes to ADPKD cystogenesis through the control of the immune response associated with the loss of Pkd1 and suggest that targeting this pathway may slow disease progression.
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Affiliation(s)
- Miran Yoo
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York
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Rodriguez I, Rossi NM, Keskus AG, Xie Y, Ahmad T, Bryant A, Lou H, Paredes JG, Milano R, Rao N, Tulsyan S, Boland JF, Luo W, Liu J, O'Hanlon T, Bess J, Mukhina V, Gaykalova D, Yuki Y, Malik L, Billingsley KJ, Blauwendraat C, Carrington M, Yeager M, Mirabello L, Kolmogorov M, Dean M. Insights into the mechanisms and structure of breakage-fusion-bridge cycles in cervical cancer using long-read sequencing. Am J Hum Genet 2024; 111:544-561. [PMID: 38307027 PMCID: PMC10940022 DOI: 10.1016/j.ajhg.2024.01.002] [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: 08/18/2023] [Revised: 12/20/2023] [Accepted: 01/04/2024] [Indexed: 02/04/2024] Open
Abstract
Cervical cancer is caused by human papillomavirus (HPV) infection, has few approved targeted therapeutics, and is the most common cause of cancer death in low-resource countries. We characterized 19 cervical and four head and neck cancer cell lines using long-read DNA and RNA sequencing and identified the HPV types, HPV integration sites, chromosomal alterations, and cancer driver mutations. Structural variation analysis revealed telomeric deletions associated with DNA inversions resulting from breakage-fusion-bridge (BFB) cycles. BFB is a common mechanism of chromosomal alterations in cancer, and our study applies long-read sequencing to this important chromosomal rearrangement type. Analysis of the inversion sites revealed staggered ends consistent with exonuclease digestion of the DNA after breakage. Some BFB events are complex, involving inter- or intra-chromosomal insertions or rearrangements. None of the BFB breakpoints had telomere sequences added to resolve the dicentric chromosomes, and only one BFB breakpoint showed chromothripsis. Five cell lines have a chromosomal region 11q BFB event, with YAP1-BIRC3-BIRC2 amplification. Indeed, YAP1 amplification is associated with a 10-year-earlier age of diagnosis of cervical cancer and is three times more common in African American women. This suggests that individuals with cervical cancer and YAP1-BIRC3-BIRC2 amplification, especially those of African ancestry, might benefit from targeted therapy. In summary, we uncovered valuable insights into the mechanisms and consequences of BFB cycles in cervical cancer using long-read sequencing.
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Affiliation(s)
- Isabel Rodriguez
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Nicole M Rossi
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Ayse G Keskus
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Yi Xie
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Tanveer Ahmad
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Asher Bryant
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Hong Lou
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Jesica Godinez Paredes
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Rose Milano
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Nina Rao
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA; Department of Biology, Johns Hopkins University, Baltimore, MD, USA
| | - Sonam Tulsyan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Joseph F Boland
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Wen Luo
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Jia Liu
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Tim O'Hanlon
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Jazmyn Bess
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Vera Mukhina
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Maryland School of Medical Center, Baltimore, MD, USA
| | - Daria Gaykalova
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA; Marlene & Stewart Greenebaum Comprehensive Cancer Center, University of Maryland Medical System, Baltimore, MD, USA; Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, USA
| | - Yuko Yuki
- Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Laksh Malik
- Center for Alzheimer's and Related Dementias, National Institute on Aging, Bethesda, MD, USA
| | | | - Cornelis Blauwendraat
- Center for Alzheimer's and Related Dementias, National Institute on Aging, Bethesda, MD, USA; Laboratory of Neurogenetics, National Institute on Aging, Bethesda, MD, USA
| | - Mary Carrington
- Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA; Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA
| | - Meredith Yeager
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Lisa Mirabello
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Mikhail Kolmogorov
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Michael Dean
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA.
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Ascenção C, Sims JR, Dziubek A, Comstock W, Fogarty EA, Badar J, Freire R, Grimson A, Weiss RS, Cohen PE, Smolka MB. A TOPBP1 allele causing male infertility uncouples XY silencing dynamics from sex body formation. eLife 2024; 12:RP90887. [PMID: 38391183 PMCID: PMC10942628 DOI: 10.7554/elife.90887] [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: 02/24/2024] Open
Abstract
Meiotic sex chromosome inactivation (MSCI) is a critical feature of meiotic prophase I progression in males. While the ATR kinase and its activator TOPBP1 are key drivers of MSCI within the specialized sex body (SB) domain of the nucleus, how they promote silencing remains unclear given their multifaceted meiotic functions that also include DNA repair, chromosome synapsis, and SB formation. Here we report a novel mutant mouse harboring mutations in the TOPBP1-BRCT5 domain. Topbp1B5/B5 males are infertile, with impaired MSCI despite displaying grossly normal events of early prophase I, including synapsis and SB formation. Specific ATR-dependent events are disrupted, including phosphorylation and localization of the RNA:DNA helicase Senataxin. Topbp1B5/B5 spermatocytes initiate, but cannot maintain ongoing, MSCI. These findings reveal a non-canonical role for the ATR-TOPBP1 signaling axis in MSCI dynamics at advanced stages in pachynema and establish the first mouse mutant that separates ATR signaling and MSCI from SB formation.
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Affiliation(s)
- Carolline Ascenção
- Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell UniversityIthacaUnited States
| | - Jennie R Sims
- Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell UniversityIthacaUnited States
| | - Alexis Dziubek
- Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell UniversityIthacaUnited States
| | - William Comstock
- Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell UniversityIthacaUnited States
| | - Elizabeth A Fogarty
- Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell UniversityIthacaUnited States
| | - Jumana Badar
- Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell UniversityIthacaUnited States
| | - Raimundo Freire
- Fundación Canaria del Instituto de Investigación Sanitaria de Canarias (FIISC), Unidad de Investigación, Hospital Universitario de CanariasSanta Cruz de TenerifeSpain
- Instituto de Tecnologías Biomédicas, Universidad de La LagunaLa LagunaSpain
- Universidad Fernando Pessoa CanariasLas Palmas de Gran CanariaSpain
| | - Andrew Grimson
- Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell UniversityIthacaUnited States
| | - Robert S Weiss
- Department of Biomedical Sciences, Cornell UniversityIthacaUnited States
| | - Paula E Cohen
- Department of Biomedical Sciences, Cornell UniversityIthacaUnited States
| | - Marcus B Smolka
- Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell UniversityIthacaUnited States
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Kumari L, Yadav R, Kaur D, Dey P, Bhatia A. An image analysis approach to characterize micronuclei differences in different subtypes of breast cancer. Pathol Res Pract 2024; 254:155126. [PMID: 38228038 DOI: 10.1016/j.prp.2024.155126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/10/2024] [Accepted: 01/10/2024] [Indexed: 01/18/2024]
Abstract
BACKGROUND Micronuclei (MN) have been used as screening, diagnostic and prognostic markers in multiple cancer types, including breast cancer (BC). However, the question that the MN present in all subtypes of BC are similar or different remains unanswered. We thus hypothesized that MN present in different subtypes of BC may differ in their contents which may be visible as differences in their morphologic and morphometric features. This study was thus carried out with the aim to identify the differences between MN morphometry, complexity, and texture in different subtypes of BC, such as estrogen and progesterone receptor-positive (ER+/PR+; MCF-7, T-47D), human epidermal growth factor receptor-positive (Her2 +;SKBR3) and triple-negative BC (TNBC; MDA-MB-231, MDA-MB-468) cell lines (CLs) by ImageJ software. METHODS For analysis of MN dimensions, MN irregularity, and texture, we used morphometry and two mathematical computer-assisted algorithms, i.e., fractal dimension (FD) and grey level co-occurrence matrix (GLCM) of ImageJ software. RESULTS MN area and perimeter values showed differences in the size of MN in different subtypes of BC, with the largest MN in TNBC CLs. GLCM parameters (entropy, angular second moment, inverse difference moment, contrast, and correlation) showed highly heterogenous texture in case of TNBC MN as compared to the others. FD analysis also revealed more complexity and irregularity in MN found in TNBC cells. CONCLUSION The study for the first time showed morphometric, architectural and texture related differences amongst MN present in different subtypes of BC. The above may reflect differences in their composition and contents. Further, these differences may point towards the distinct mechanisms involved in the formation of MN in different subtypes of BC that need to be explored further.
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Affiliation(s)
- Laxmi Kumari
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Reena Yadav
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Deepinder Kaur
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Pranab Dey
- Department of Cytology and Gynaecological Pathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Alka Bhatia
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
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Mistriotis P, Wisniewski EO, Si BR, Kalab P, Konstantopoulos K. Coordinated in confined migration: crosstalk between the nucleus and ion channel-mediated mechanosensation. Trends Cell Biol 2024:S0962-8924(24)00001-1. [PMID: 38290913 DOI: 10.1016/j.tcb.2024.01.001] [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: 09/03/2023] [Revised: 12/22/2023] [Accepted: 01/05/2024] [Indexed: 02/01/2024]
Abstract
Cell surface and intracellular mechanosensors enable cells to perceive different geometric, topographical, and physical cues. Mechanosensitive ion channels (MICs) localized at the cell surface and on the nuclear envelope (NE) are among the first to sense and transduce these signals. Beyond compartmentalizing the genome of the cell and its transcription, the nucleus also serves as a mechanical gauge of different physical and topographical features of the tissue microenvironment. In this review, we delve into the intricate mechanisms by which the nucleus and different ion channels regulate cell migration in confinement. We review evidence suggesting an interplay between macromolecular nuclear-cytoplasmic transport (NCT) and ionic transport across the cell membrane during confined migration. We also discuss the roles of the nucleus and ion channel-mediated mechanosensation, whether acting independently or in tandem, in orchestrating migratory mechanoresponses. Understanding nuclear and ion channel sensing, and their crosstalk, is critical to advancing our knowledge of cell migration in health and disease.
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Affiliation(s)
| | - Emily O Wisniewski
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Bishwa R Si
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Petr Kalab
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA.
| | - Konstantinos Konstantopoulos
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218, USA; Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA; Department of Oncology, The Johns Hopkins University, Baltimore, MD 21205, USA.
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8
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Jiang H, Chan YW. Chromatin bridges: stochastic breakage or regulated resolution? Trends Genet 2024; 40:69-82. [PMID: 37891096 DOI: 10.1016/j.tig.2023.10.004] [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: 08/15/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 10/29/2023]
Abstract
Genetic material is organized in the form of chromosomes, which need to be segregated accurately into two daughter cells in each cell cycle. However, chromosome fusion or the presence of unresolved interchromosomal linkages lead to the formation of chromatin bridges, which can induce DNA lesions and genome instability. Persistent chromatin bridges are trapped in the cleavage furrow and are broken at or after abscission, the final step of cytokinesis. In this review, we focus on recent progress in understanding the mechanism of bridge breakage and resolution. We discuss the molecular machinery and enzymes that have been implicated in the breakage and processing of bridge DNA. In addition, we outline both the immediate outcomes and genomic consequences induced by bridge breakage.
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Affiliation(s)
- Huadong Jiang
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China
| | - Ying Wai Chan
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region of China.
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Üstündağ Ü, Macar O, Kalefetoğlu Macar T, Yalçın E, Çavuşoğlu K. Effect of Melissa officinalis L. leaf extract on manganese-induced cyto-genotoxicity on Allium cepa L. Sci Rep 2023; 13:22110. [PMID: 38092949 PMCID: PMC10719243 DOI: 10.1038/s41598-023-49699-6] [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: 10/07/2023] [Accepted: 12/11/2023] [Indexed: 12/17/2023] Open
Abstract
Although the antioxidant properties of Melissa officinalis extract (Mox) are widely known, little work has focused on its protective capacity against heavy metal stress. The primary objective of this study was to determine the potential of Mox to mitigate manganese (II) chloride (MnCI2)-induced cyto-genotoxicity using the Allium and comet assays. Physiological, genotoxic, biochemical and anatomical parameters as well as the phenolic composition of Mox were examined in Allium cepa (L.). Application of 1000 µM MnCl2 reduced the rooting percentage, root elongation, weight gain, mitotic index and levels of chlorophyll a and chlorophyll b pigments compared to the control group. However, it increased micronuclei formation, chromosomal abnormality frequencies, tail DNA percentage, proline amount, lipid peroxidation level and meristematic damage severity. The activities of superoxide dismutase and catalase also increased. Chromosomal aberrations induced by MnCl2 were fragment, sticky chromosome, vagrant chromosome, unequal distribution of chromatin and bridge. Application of 250 mg/L Mox and 500 mg/L Mox along with MnCl2 significantly alleviated adverse effects dose dependently. The antioxidant activity bestowed by the phenolic compounds in Mox assisted the organism to combat MnCl2 toxicity. Consequently, Mox exerted remarkable protection against MnCl2 toxicity and it needs to be investigated further as a potential therapeutic option.
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Affiliation(s)
- Ünal Üstündağ
- Department of Biology, Faculty of Science and Art, Giresun University, Giresun, Turkey
| | - Oksal Macar
- Department of Food Technology, Şebinkarahisar School of Applied Sciences, Giresun University, 28400, Giresun, Turkey.
| | - Tuğçe Kalefetoğlu Macar
- Department of Food Technology, Şebinkarahisar School of Applied Sciences, Giresun University, 28400, Giresun, Turkey
| | - Emine Yalçın
- Department of Biology, Faculty of Science and Art, Giresun University, Giresun, Turkey
| | - Kültiğin Çavuşoğlu
- Department of Biology, Faculty of Science and Art, Giresun University, Giresun, Turkey
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10
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Ascencao CFR, Sims JR, Dziubek A, Comstock W, Fogarty EA, Badar J, Freire R, Grimson A, Weiss RS, Cohen PE, Smolka M. A TOPBP1 Allele Causing Male Infertility Uncouples XY Silencing Dynamics From Sex Body Formation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.31.543071. [PMID: 37398453 PMCID: PMC10312512 DOI: 10.1101/2023.05.31.543071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Meiotic sex chromosome inactivation (MSCI) is a critical feature of meiotic prophase I progression in males. While the ATR kinase and its activator TOPBP1 are key drivers of MSCI within the specialized sex body (SB) domain of the nucleus, how they promote silencing remains unclear given their multifaceted meiotic functions that also include DNA repair, chromosome synapsis and SB formation. Here we report a novel mutant mouse harboring mutations in the TOPBP1-BRCT5 domain. Topbp1 B5/B5 males are infertile, with impaired MSCI despite displaying grossly normal events of early prophase I, including synapsis and SB formation. Specific ATR-dependent events are disrupted including phosphorylation and localization of the RNA:DNA helicase Senataxin. Topbp1 B5/B5 spermatocytes initiate, but cannot maintain ongoing, MSCI. These findings reveal a non-canonical role for the ATR-TOPBP1 signaling axis in MSCI dynamics at advanced stages in pachynema and establish the first mouse mutant that separates ATR signaling and MSCI from SB formation.
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11
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Mendonça JDS, de Almeida JCN, Vieira LG, Hirano LQL, Santos ALQ, Andrade DV, Malafaia G, de Oliveira Júnior RJ, Beletti ME. Mutagenicity, hepatotoxicity, and neurotoxicity of glyphosate and fipronil commercial formulations in Amazon turtles neonates (Podocnemis expansa). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 898:165529. [PMID: 37453711 DOI: 10.1016/j.scitotenv.2023.165529] [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: 05/09/2023] [Revised: 06/21/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Pesticides are considered one of the main causes of the population decline of reptiles worldwide, with freshwater turtles being particularly susceptible to aquatic contamination. In this context, we investigated the potential mutagenic, hepatotoxic, and neurotoxic effects in neonates of Podocnemis expansa exposed to substrate contaminated with different concentrations of glyphosate and/or fipronil during embryonic development. Eggs collected from the natural environment were artificially incubated in sand moistened with pure water, water added with glyphosate Atar 48® at concentrations of 65 and 6500 μg/L (groups G1 and G2, respectively), water added with fipronil Regent® 800WG at 4 and 400 μg/L (groups F1 and F2, respectively) and, water added with the combination of 65 μg/L glyphosate and 4 μg/L fipronil or with 6500 μg/L glyphosate and 400 μg/L fipronil (groups GF1 and GF2, respectively). For mutagenicity analysis, we evaluated the frequency of micronuclei (MN) and other erythrocyte nuclear abnormalities (ENAs), while for evaluation of hepatotoxicity and neurotoxicity, livers and encephalon were analyzed for histopathological alterations. Exposure to pesticides, alone or in combination, increased the frequency of erythrocyte nuclear abnormalities, particularly blebbed nuclei, moved nuclei, and notched nuclei. Individuals exposed to fipronil exhibited congestion and inflammatory infiltrate in their liver tissue, while, in the encephalon, congestion, and necrosis were present. Our study confirms that the incubation of eggs in substrate polluted with glyphosate and fipronil causes histopathological damage and mutagenic alteration in P. expansa, highlighting the importance of using different biomarkers to evaluate the ecotoxicological effects of these pesticides, especially in oviparous animals.
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Affiliation(s)
- Juliana Dos Santos Mendonça
- Instituto de Biociências, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Rio Claro, SP, Brazil; Laboratório de Toxicologia Aplicada ao Meio Ambiente, Instituto Federal Goiano, Urutaí, GO, Brazil.
| | - Julio Cesar Neves de Almeida
- Programa de Pós-graduação em Ciências Veterinárias, Faculdade de Medicina Veterinária, Universidade Federal de Uberlândia (UFU), Uberlândia, MG, Brazil
| | - Lucélia Gonçalves Vieira
- Laboratório Multidisciplinar em Morfologia e Ontogenia, Instituto de Ciências Biológicas, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Líria Queiroz Luz Hirano
- Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília (UNB), Brasília, DF, Brazil
| | - André Luiz Quagliatto Santos
- Organização Não Governamental - Preservação dos Animais Silvestres do Brasil - ONG PAS do Brasil, Uberlândia, MG, Brazil
| | - Denis Vieira Andrade
- Departamento de Biodiversidade, Instituto de Biociências, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Rio Claro, SP, Brazil
| | - Guilherme Malafaia
- Laboratório de Toxicologia Aplicada ao Meio Ambiente, Instituto Federal Goiano, Urutaí, GO, Brazil; Programa de Pós-Graduação em Conservação dos Recursos Naturais do Cerrado, Instituto Federal Goiano, Urutaí, GO, Brazil; Programa de Pós-Graduação em Ecologia, Conservação e Biodiversidade, Universidade Federal de Uberlândia (UFU), Uberlândia, MG, Brazil; Programa de Pós-Graduação em Biotecnologia e Biodiversidade, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil.
| | - Robson José de Oliveira Júnior
- Laboratório de Citogenética, Instituto de Biotecnologia, Universidade Federal de Uberlândia (UFU), Uberlândia, MG, Brazil
| | - Marcelo Emílio Beletti
- Laboratório de Biologia da Reprodução, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia (UFU), Uberlândia, MG, Brazil
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12
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di Vito R, Acito M, Fatigoni C, Schiesser CH, Davies MJ, Mangiavacchi F, Villarini M, Santi C, Moretti M. Genotoxicity assessment of 1,4-anhydro-4-seleno-D-talitol (SeTal) in human liver HepG2 and HepaRG cells. Toxicology 2023; 499:153663. [PMID: 37924933 DOI: 10.1016/j.tox.2023.153663] [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: 10/27/2023] [Accepted: 10/29/2023] [Indexed: 11/06/2023]
Abstract
1,4-Anhydro-4-seleno-D-talitol (SeTal) is a highly water-soluble selenosugar with interesting antioxidant and skin-tissue-repair properties; it is highly stable in simulated gastric and gastrointestinal fluids and is a potential pharmaceutical ingredient that may be administered orally. Hepatic toxicity is often a major problem with novel drugs and can result in drug withdrawal from the market. Predicting hepatotoxicity is therefore essential to minimize late failure in the drug-discovery process. Herein, we report in vitro studies to evaluate the cytotoxic and genotoxic potential of SeTal in HepG2 and hepatocyte-like differentiated HepaRG cells. Except for extremely high concentrations (10 mM, 68 h-treatment in HepG2), SeTal did not affect the viability of each cell type. While the highest examined concentrations (0.75 and 1 mM in HepG2; 1 mM in HepaRG) were observed to induce primary DNA damage, SeTal did not exhibit clastogenic or aneugenic activity toward either HepG2 or HepaRG cells. Moreover, no significant cytostasis variations were observed in any experiment. The clearly negative results observed in the CBMN test suggest that SeTal might be used as a potential active pharmaceutical ingredient. The present study will be useful for the selection of non-toxic concentrations of SeTal in future investigations.
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Affiliation(s)
- Raffaella di Vito
- Department of Pharmaceutical Sciences (Unit of Public Health), University of Perugia, Via del Giochetto, 06122 Perugia, Italy.
| | - Mattia Acito
- Department of Pharmaceutical Sciences (Unit of Public Health), University of Perugia, Via del Giochetto, 06122 Perugia, Italy.
| | - Cristina Fatigoni
- Department of Pharmaceutical Sciences (Unit of Public Health), University of Perugia, Via del Giochetto, 06122 Perugia, Italy.
| | - Carl H Schiesser
- Seleno Therapeutics Pty. Ltd., Brighton East, Victoria 3187, Australia.
| | - Michael J Davies
- Seleno Therapeutics Pty. Ltd., Brighton East, Victoria 3187, Australia; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, 2200 Copenhagen, Denmark.
| | - Francesca Mangiavacchi
- Department of Pharmaceutical Sciences (Group of Catalysis Synthesis and Organic Green Chemistry), University of Perugia, Via del Liceo, 06123 Perugia, Italy.
| | - Milena Villarini
- Department of Pharmaceutical Sciences (Unit of Public Health), University of Perugia, Via del Giochetto, 06122 Perugia, Italy.
| | - Claudio Santi
- Department of Pharmaceutical Sciences (Group of Catalysis Synthesis and Organic Green Chemistry), University of Perugia, Via del Liceo, 06123 Perugia, Italy.
| | - Massimo Moretti
- Department of Pharmaceutical Sciences (Unit of Public Health), University of Perugia, Via del Giochetto, 06122 Perugia, Italy.
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13
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ElGhazaly M, Collins MO, Ibler AEM, Humphreys D. Typhoid toxin hijacks Wnt5a to establish host senescence and Salmonella infection. Cell Rep 2023; 42:113181. [PMID: 37792529 DOI: 10.1016/j.celrep.2023.113181] [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: 10/18/2022] [Revised: 06/15/2023] [Accepted: 09/13/2023] [Indexed: 10/06/2023] Open
Abstract
Damage to our genome causes acute senescence in mammalian cells, which undergo growth arrest and release a senescence-associated secretory phenotype (SASP) that propagates the stress response to bystander cells. Thus, acute senescence is a powerful tumor suppressor. Salmonella enterica hijacks senescence through its typhoid toxin, which usurps unidentified factors in the stress secretome of senescent cells to mediate intracellular infections. Here, transcriptomics of toxin-induced senescent cells (TxSCs) and proteomics of their secretome identify the factors as Wnt5a, INHBA, and GDF15. Wnt5a establishes a positive feedback loop, driving INHBA and GDF15 expression. In fibroblasts, Wnt5a and INHBA mediate autocrine senescence in TxSCs and paracrine senescence in naive cells. Wnt5a synergizes with GDF15 to increase Salmonella invasion. Intestinal TxSCs undergo apoptosis without Wnt5a, which is required for establishing intestinal TxSCs. The study reveals how an innate defense against cancer is co-opted by a bacterial pathogen to cause widespread damage and mediate infections.
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Affiliation(s)
- Mohamed ElGhazaly
- School of Biosciences, University of Sheffield, Sheffield, South Yorkshire S10 2TN, UK
| | - Mark O Collins
- School of Biosciences, University of Sheffield, Sheffield, South Yorkshire S10 2TN, UK
| | - Angela E M Ibler
- School of Biosciences, University of Sheffield, Sheffield, South Yorkshire S10 2TN, UK
| | - Daniel Humphreys
- School of Biosciences, University of Sheffield, Sheffield, South Yorkshire S10 2TN, UK.
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14
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Samach A, Mafessoni F, Gross O, Melamed-Bessudo C, Filler-Hayut S, Dahan-Meir T, Amsellem Z, Pawlowski WP, Levy AA. CRISPR/Cas9-induced DNA breaks trigger crossover, chromosomal loss, and chromothripsis-like rearrangements. THE PLANT CELL 2023; 35:3957-3972. [PMID: 37497643 PMCID: PMC10615209 DOI: 10.1093/plcell/koad209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/10/2023] [Accepted: 07/10/2023] [Indexed: 07/28/2023]
Abstract
DNA double-stranded breaks (DSBs) generated by the Cas9 nuclease are commonly repaired via nonhomologous end-joining (NHEJ) or homologous recombination (HR). However, little is known about unrepaired DSBs and the type of damage they trigger in plants. We designed an assay that detects loss of heterozygosity (LOH) in somatic cells, enabling the study of a broad range of DSB-induced genomic events. The system relies on a mapped phenotypic marker which produces a light purple color (betalain pigment) in all plant tissues. Plants with sectors lacking the Betalain marker upon DSB induction between the marker and the centromere were tested for LOH events. Using this assay, we detected a tomato (Solanum lycopersicum) flower with a twin yellow and dark purple sector, corresponding to a germinally transmitted somatic crossover event. We also identified instances of small deletions of genomic regions spanning the T-DNA and whole chromosome loss. In addition, we show that major chromosomal rearrangements including loss of large fragments, inversions, and translocations were clearly associated with the CRISPR-induced DSB. Detailed characterization of complex rearrangements by whole-genome sequencing and molecular and cytological analyses supports a model in which a breakage-fusion-bridge cycle followed by chromothripsis-like rearrangements had been induced. Our LOH assay provides a tool for precise breeding via targeted crossover detection. It also uncovers CRISPR-mediated chromothripsis-like events in plants.
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Affiliation(s)
- Aviva Samach
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot 7610001,Israel
| | - Fabrizio Mafessoni
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot 7610001,Israel
| | - Or Gross
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot 7610001,Israel
| | - Cathy Melamed-Bessudo
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot 7610001,Israel
| | - Shdema Filler-Hayut
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot 7610001,Israel
| | - Tal Dahan-Meir
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot 7610001,Israel
| | - Ziva Amsellem
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot 7610001,Israel
| | | | - Avraham A Levy
- Department of Plant and Environmental Sciences, The Weizmann Institute of Science, Rehovot 7610001,Israel
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15
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Marques JF, Kops GJPL. Permission to pass: on the role of p53 as a gatekeeper for aneuploidy. Chromosome Res 2023; 31:31. [PMID: 37864038 PMCID: PMC10589155 DOI: 10.1007/s10577-023-09741-9] [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: 05/30/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 10/22/2023]
Abstract
Aneuploidy-the karyotype state in which the number of chromosomes deviates from a multiple of the haploid chromosome set-is common in cancer, where it is thought to facilitate tumor initiation and progression. However, it is poorly tolerated in healthy cells: during development and tissue homeostasis, aneuploid cells are efficiently cleared from the population. It is still largely unknown how cancer cells become, and adapt to being, aneuploid. P53, the gatekeeper of the genome, has been proposed to guard against aneuploidy. Aneuploidy in cancer genomes strongly correlates with mutations in TP53, and p53 is thought to prevent the propagation of aneuploid cells. Whether p53 also participates in preventing the mistakes in cell division that lead to aneuploidy is still under debate. In this review, we summarize the current understanding of the role of p53 in protecting cells from aneuploidy, and we explore the consequences of functional p53 loss for the propagation of aneuploidy in cancer.
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Affiliation(s)
- Joana F Marques
- Royal Netherlands Academy of Arts and Sciences (KNAW), Hubrecht Institute, Uppsalalaan 8, 3584CT, Utrecht, the Netherlands
- University Medical Center Utrecht, Heidelberglaan 100, 3584CX, Utrecht, the Netherlands
- Oncode Institute, Jaarbeursplein 6, 3521AL, Utrecht, the Netherlands
| | - Geert J P L Kops
- Royal Netherlands Academy of Arts and Sciences (KNAW), Hubrecht Institute, Uppsalalaan 8, 3584CT, Utrecht, the Netherlands.
- University Medical Center Utrecht, Heidelberglaan 100, 3584CX, Utrecht, the Netherlands.
- Oncode Institute, Jaarbeursplein 6, 3521AL, Utrecht, the Netherlands.
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16
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Xie J, Kuriakose T, Bianski B, Twarog N, Savage E, Xu K, Zhu X, He C, Hansen B, Wang H, High A, Li Y, Rehg JE, Tillman HS, Freeman BB, Rankovic Z, Onar-Thomas A, Fan Y, Wu G, Peng J, Miller S, Baker SJ, Shelat AA, Tinkle CL. ATM inhibition enhances the efficacy of radiation across distinct molecular subgroups of pediatric high-grade glioma. Neuro Oncol 2023; 25:1828-1841. [PMID: 36971093 PMCID: PMC10547515 DOI: 10.1093/neuonc/noad064] [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: 10/05/2023] Open
Abstract
BACKGROUND Pediatric high-grade glioma (pHGG) is largely incurable and accounts for most brain tumor-related deaths in children. Radiation is a standard therapy, yet the benefit from this treatment modality is transient, and most children succumb to disease within 2 years. Recent large-scale genomic studies suggest that pHGG has alterations in DNA damage response (DDR) pathways that induce resistance to DNA damaging agents. The aim of this study was to evaluate the therapeutic potential and molecular consequences of combining radiation with selective DDR inhibition in pHGG. METHODS We conducted an unbiased screen in pHGG cells that combined radiation with clinical candidates targeting the DDR and identified the ATM inhibitor AZD1390. Subsequently, we profiled AZD1390 + radiation in an extensive panel of early passage pHGG cell lines, mechanistically characterized response to the combination in vitro in sensitive and resistant cells and evaluated the combination in vivo using TP53 wild-type and TP53 mutant orthotopic xenografts. RESULTS AZD1390 significantly potentiated radiation across molecular subgroups of pHGG by increasing mutagenic nonhomologous end joining and augmenting genomic instability. In contrast to previous reports, ATM inhibition significantly improved the efficacy of radiation in both TP53 wild-type and TP53 mutant isogenic cell lines and distinct orthotopic xenograft models. Furthermore, we identified a novel mechanism of resistance to AZD1390 + radiation that was marked by an attenuated ATM pathway response which dampened sensitivity to ATM inhibition and induced synthetic lethality with ATR inhibition. CONCLUSIONS Our study supports the clinical evaluation of AZD1390 in combination with radiation in pediatric patients with HGG.
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Affiliation(s)
- Jia Xie
- Department of Radiation Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, USA
| | - Teneema Kuriakose
- Department of Radiation Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, USA
| | - Brandon Bianski
- Department of Radiation Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, USA
| | - Nathaniel Twarog
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital
| | - Evan Savage
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital
| | - Ke Xu
- Center for Applied Bioinformatics, St. Jude Children’s Research Hospital, Memphis, USA
| | - Xiaoyan Zhu
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital
| | - Chen He
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital
| | - Baranda Hansen
- Center for Advanced Genome Engineering, St. Jude Children’s Research Hospital
| | - Hong Wang
- Center for Proteomics and Metabolomics, St. Jude Children’s Research Hospital
| | - Anthony High
- Center for Proteomics and Metabolomics, St. Jude Children’s Research Hospital
| | - Yuxin Li
- Center for Proteomics and Metabolomics, St. Jude Children’s Research Hospital
| | - Jerold E Rehg
- Department of Pathology, St. Jude Children’s Research Hospital
| | | | - Burgess B Freeman
- Preclinical Pharmacokinetic Shared Resource, St. Jude Children’s Research Hospital
| | - Zoran Rankovic
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital
| | - Arzu Onar-Thomas
- Department of Biostatistics, St. Jude Children’s Research Hospital
| | - Yiping Fan
- Center for Applied Bioinformatics, St. Jude Children’s Research Hospital, Memphis, USA
| | - Gang Wu
- Center for Applied Bioinformatics, St. Jude Children’s Research Hospital, Memphis, USA
| | - Junmin Peng
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital
- Center for Proteomics and Metabolomics, St. Jude Children’s Research Hospital
- Department of Structural Biology, St. Jude Children’s Research Hospital
| | - Shondra Miller
- Center for Advanced Genome Engineering, St. Jude Children’s Research Hospital
| | - Suzanne J Baker
- Department of Developmental Neurobiology, St. Jude Children’s Research Hospital
| | - Anang A Shelat
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital
| | - Christopher L Tinkle
- Department of Radiation Oncology, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, USA
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17
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Elnaggar A, Madkour G, Tahoun N, Amin A, Zahran FM. Micronuclei detection in oral cytologic smear: does it add diagnostic value? J Egypt Natl Canc Inst 2023; 35:31. [PMID: 37743405 DOI: 10.1186/s43046-023-00188-x] [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: 11/17/2022] [Accepted: 08/28/2023] [Indexed: 09/26/2023] Open
Abstract
BACKGROUND Screening and early diagnosis of oral squamous cell carcinoma (OSCC) are directly associated with increased survival rate and improved prognosis. Noninvasive diagnostic tools have been implemented in the early detection as toluidine blue staining, optical imaging, and oral cytology. This study aimed to assess and compare the presence of micronuclei (MN) in oral exfoliative cytology of healthy controls, subjects exposed to high-risk factors for oral cancer, subjects with oral potentially malignant lesions (OPMLs), and those with malignant oral lesions. SUBJECTS AND METHODS A total number of 92 subjects were divided into 46 healthy controls with no oral mucosal lesions (23 with no evidence of cancer risk factors and 23 with cancer risk factors), 23 with OPMLs and 23 with oral malignant lesions. All the 92 participants were subjected to cytological sampling for detection of MN. The final diagnosis of the oral lesions was confirmed by the histopathological picture and compared to the cytological results. RESULTS The results showed that the diagnostic accuracy of MN was higher in OPMLs group (95.2%). The sensitivity of MN test in malignant group was much lower (52.2%); however, all the cytological criteria of malignancy were markedly detected as compared to the OPMLs group. CONCLUSIONS Conventional oral cytology supported by MN is highly beneficial as adjunctive tool in the screening for early detection of dysplastic oral lesions.
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Affiliation(s)
- Alaa Elnaggar
- Oral Medicine and Periodontology Department, Faculty of Dentistry, Cairo University, Cairo, Egypt.
| | - Gihane Madkour
- Oral Medicine and Periodontology Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Neveen Tahoun
- National Cancer Institute, Cairo University, Cairo, Egypt
| | - Ayman Amin
- National Cancer Institute, Cairo University, Cairo, Egypt
| | - Fat'heya M Zahran
- Oral Medicine and Periodontology Department, Faculty of Dentistry, Cairo University, Cairo, Egypt
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18
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Rodriguez I, Rossi NM, Keskus A, Xie Y, Ahmad T, Bryant A, Lou H, Paredes JG, Milano R, Rao N, Tulsyan S, Boland JF, Luo W, Liu J, O’Hanlon T, Bess J, Mukhina V, Gaykalova D, Yuki Y, Malik L, Billingsley K, Blauwendraat C, Carrington M, Yeager M, Mirabello L, Kolmogorov M, Dean M. Insights into the Mechanisms and Structure of Breakage-Fusion-Bridge Cycles in Cervical Cancer using Long-Read Sequencing. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.08.21.23294276. [PMID: 37662332 PMCID: PMC10473792 DOI: 10.1101/2023.08.21.23294276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Cervical cancer is caused by human papillomavirus (HPV) infection, has few approved targeted therapeutics, and is the most common cause of cancer death in low-resource countries. We characterized 19 cervical and four head and neck cell lines using long-read DNA and RNA sequencing and identified the HPV types, HPV integration sites, chromosomal alterations, and cancer driver mutations. Structural variation analysis revealed telomeric deletions associated with DNA inversions resulting from breakage-fusion-bridge (BFB) cycles. BFB is a common mechanism of chromosomal alterations in cancer, and this is one of the first analyses of these events using long-read sequencing. Analysis of the inversion sites revealed staggered ends consistent with exonuclease digestion of the DNA after breakage. Some BFB events are complex, involving inter- or intra-chromosomal insertions or rearrangements. None of the BFB breakpoints had telomere sequences added to resolve the dicentric chromosomes and only one BFB breakpoint showed chromothripsis. Five cell lines have a Chr11q BFB event, with YAP1/BIRC2/BIRC3 gene amplification. Indeed, YAP1 amplification is associated with a 10-year earlier age of diagnosis of cervical cancer and is three times more common in African American women. This suggests that cervical cancer patients with YAP1/BIRC2/BIRC3-amplification, especially those of African American ancestry, might benefit from targeted therapy. In summary, we uncovered new insights into the mechanisms and consequences of BFB cycles in cervical cancer using long-read sequencing.
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Affiliation(s)
- Isabel Rodriguez
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Nicole M. Rossi
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Ayse Keskus
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Yi Xie
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Tanveer Ahmad
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Asher Bryant
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Hong Lou
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA and Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Jesica Godinez Paredes
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Rose Milano
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Nina Rao
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
- Department of Biology, Johns Hopkins University, Baltimore, MD, USA
| | - Sonam Tulsyan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Joseph F. Boland
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA and Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Wen Luo
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA and Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Jia Liu
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA and Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Tim O’Hanlon
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA and Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Jazmyn Bess
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Vera Mukhina
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Maryland School of Medical Center, Baltimore, MD, USA
| | - Daria Gaykalova
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA
- Marlene & Stewart Greenebaum Comprehensive Cancer Center, University of Maryland Medical System, Baltimore, MD, USA
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, USA
| | - Yuko Yuki
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA and Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Laksh Malik
- Laboratory of Neurogenetics, National Institute on Aging, Bethesda, Maryland, USA and Center for Alzheimer’s and Related Dementias, National Institute on Aging, Bethesda, Maryland, USA
| | - Kimberley Billingsley
- Laboratory of Neurogenetics, National Institute on Aging, Bethesda, Maryland, USA and Center for Alzheimer’s and Related Dementias, National Institute on Aging, Bethesda, Maryland, USA
| | - Cornelis Blauwendraat
- Laboratory of Neurogenetics, National Institute on Aging, Bethesda, Maryland, USA and Center for Alzheimer’s and Related Dementias, National Institute on Aging, Bethesda, Maryland, USA
| | - Mary Carrington
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA and Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, Massachusetts, USA
| | - Meredith Yeager
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, USA and Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Lisa Mirabello
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Mikhail Kolmogorov
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Michael Dean
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
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19
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Gantchev J, Messina-Pacheco J, Martínez Villarreal A, Ramchatesingh B, Lefrançois P, Xie P, Amar L, Xu HH, Raveendra K, Sikorski D, Guerra Ordaz DJ, Gill RPK, Lambert M, Litvinov IV. Ectopically Expressed Meiosis-Specific Cancer Testis Antigen HORMAD1 Promotes Genomic Instability in Squamous Cell Carcinomas. Cells 2023; 12:1627. [PMID: 37371097 DOI: 10.3390/cells12121627] [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: 03/29/2023] [Revised: 05/29/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Genomic instability is a prominent hallmark of cancer, however the mechanisms that drive and sustain this process remain elusive. Research demonstrates that numerous cancers with increased levels of genomic instability ectopically express meiosis-specific genes and undergo meiomitosis, the clash of mitotic and meiotic processes. These meiotic genes may represent novel therapeutic targets for the treatment of cancer. We studied the relationship between the expression of the meiosis protein HORMAD1 and genomic instability in squamous cell carcinomas (SCCs). First, we assessed markers of DNA damage and genomic instability following knockdown and overexpression of HORMAD1 in different cell lines representing SCCs and epithelial cancers. shRNA-mediated depletion of HORMAD1 expression resulted in increased genomic instability, DNA damage, increased sensitivity to etoposide, and decreased expression of DNA damage response/repair genes. Conversely, overexpression of HORMAD1 exhibited protective effects leading to decreased DNA damage, enhanced survival and decreased sensitivity to etoposide. Furthermore, we identified a meiotic molecular pathway that regulates HORMAD1 expression by targeting the upstream meiosis transcription factor STRA8. Our results highlight a specific relationship between HORMAD1 and genomic instability in SCCs, suggesting that selectively inhibiting HORMAD1, possibly, through STRA8 signaling, may provide a new paradigm of treatment options for HORMAD1-expressing SCCs.
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Affiliation(s)
- Jennifer Gantchev
- Research Institute of McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Julia Messina-Pacheco
- Research Institute of McGill University Health Centre, Montreal, QC H4A 3J1, Canada
- Department of Pathology, McGill University, Montreal, QC H4A 3J1, Canada
| | | | | | - Philippe Lefrançois
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC H3T 1E2, Canada
| | - Pingxing Xie
- Division of Dermatology, Department of Medicine, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Laetitia Amar
- Faculty of Medicine, McGill University, Montreal, QC H3G 2M1, Canada
| | - Hong Hao Xu
- Faculty of Medicine, Laval University, Quebec City, QC G1V 0A6, Canada
| | | | - Daniel Sikorski
- Faculty of Medicine, McGill University, Montreal, QC H3G 2M1, Canada
| | | | | | - Marine Lambert
- Research Institute of McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Ivan V Litvinov
- Research Institute of McGill University Health Centre, Montreal, QC H4A 3J1, Canada
- Division of Dermatology, Department of Medicine, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
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20
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Ding H, Liu S, Du W, Su L, Chen J, Tian Y, Pan D, Chen L, Rizzello L, Zheng X, Battaglia G, Luo K, Gong Q, Tian X. Revealing the amyloid β-protein with zinc finger protein of micronucleus during Alzheimer's disease progress by a quaternary ammonium terpyridine probe. Biosens Bioelectron 2023; 236:115446. [PMID: 37290288 DOI: 10.1016/j.bios.2023.115446] [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: 03/10/2023] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Micronucleus (MN) is regarded as an abnormal structure in eukaryotic cells which can be used as a biomarker for genetic instability. However, direct observation of MN in living cells is rarely achieved due to the lack of probes that are capable of distinguishing nuclear- and MN-DNA. Herein, a water-soluble terpyridine organic small molecule (ABT) was designed and employed to recognize Zinc-finger protein (ZF) for imaging intracellular MN. The in vitro experiments suggested ABT has a high affinity towards ZF. Further live cell staining showed that ABT could selectively target MN in HeLa and NSC34 cells when combined with ZF. Importantly, we use ABT to uncover the correlation between neurotoxic amyloid β-protein (Aβ) and MN during Alzheimer's disease (AD) progression. Thus, this study provides profound insight into the relationship between Aβ and genomic disorders, offering a deeper understanding for the diagnosis and treatment of AD.
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Affiliation(s)
- Haitao Ding
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China
| | - Shangke Liu
- Department of Dermatology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Wei Du
- School of Basic Medical Sciences, Anhui Medical University, Hefei, 230032, China.
| | - Liping Su
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China
| | - Junyang Chen
- Department of Chemistry, University College London, London, United Kingdom
| | - Yupeng Tian
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Hefei, 230039, China
| | - Dayi Pan
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China
| | - Lei Chen
- Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Hefei, 230039, China.
| | - Loris Rizzello
- Department of Pharmaceutical Sciences - University of Milan, Via G. Balzaretti 9, 20133, Milan, IT, Italy; The National Institute of Molecular Genetics (INGM), Via Francesco Sforza 35, 20122, Milan, IT, Italy
| | - Xiaowei Zheng
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China; Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Giuseppe Battaglia
- Department of Chemistry, University College London, London, United Kingdom
| | - Kui Luo
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China; Functional and Molecular Imaging Key Laboratory of Sichuan Province, And Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China
| | - Qiyong Gong
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China; Functional and Molecular Imaging Key Laboratory of Sichuan Province, And Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, 610041, China; Department of Radiology, West China Xiamen Hospital of Sichuan University, 699 Jinyuan Xi Road, Jimei District, 361021, Xiamen, Fujian, China
| | - Xiaohe Tian
- Department of Radiology and National Clinical Research Center for Geriatrics, Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province; Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610000, Sichuan Province, China.
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21
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Zhu X, Zhao W, Zhou Z, Gu X. Unraveling the Drivers of Tumorigenesis in the Context of Evolution: Theoretical Models and Bioinformatics Tools. J Mol Evol 2023:10.1007/s00239-023-10117-0. [PMID: 37246992 DOI: 10.1007/s00239-023-10117-0] [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: 12/30/2022] [Accepted: 05/09/2023] [Indexed: 05/30/2023]
Abstract
Cancer originates from somatic cells that have accumulated mutations. These mutations alter the phenotype of the cells, allowing them to escape homeostatic regulation that maintains normal cell numbers. The emergence of malignancies is an evolutionary process in which the random accumulation of somatic mutations and sequential selection of dominant clones cause cancer cells to proliferate. The development of technologies such as high-throughput sequencing has provided a powerful means to measure subclonal evolutionary dynamics across space and time. Here, we review the patterns that may be observed in cancer evolution and the methods available for quantifying the evolutionary dynamics of cancer. An improved understanding of the evolutionary trajectories of cancer will enable us to explore the molecular mechanism of tumorigenesis and to design tailored treatment strategies.
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Affiliation(s)
- Xunuo Zhu
- Innovation Institute for Artificial Intelligence in Medicine, Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wenyi Zhao
- Innovation Institute for Artificial Intelligence in Medicine, Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhan Zhou
- Innovation Institute for Artificial Intelligence in Medicine, Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China.
- Alibaba-Zhejiang University Joint Research Center of Future Digital Healthcare, Hangzhou, 310058, China.
| | - Xun Gu
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA.
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22
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Mercado SAS, Galvis DGV. Paracetamol ecotoxicological bioassay using the bioindicators Lens culinaris Med. and Pisum sativum L. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:61965-61976. [PMID: 36934188 PMCID: PMC10024602 DOI: 10.1007/s11356-023-26475-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 03/11/2023] [Indexed: 05/10/2023]
Abstract
Paracetamol is one of the most widely used drugs worldwide, yet its environmental presence and hazardous impact on non-target organisms could rapidly increase. In this study, the possible cytotoxic effects of paracetamol were evaluated using two bioindicator plants Lens culinaris and Pisum sativum. Concentrations of 500, 400, 300, 200, 100, 50, 25, 5, 1 mg L-1, and a control (distilled water) were used for a total of 10 treatments, which were subsequently applied on seeds of Lens culinaris Med. and Pisum sativum L.; after 72 h of exposure, root growth, mitotic index, percentage of chromosomal abnormalities, and the presence of micronucleus were evaluated. The cytotoxic effect of paracetamol on L. culinaris and P. sativum was demonstrated, reporting the inhibition of root growth, the presence of abnormalities, and a significant micronucleus index at all concentrations used, which shows that this drug has a high degree of toxicity.
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23
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Draxler A, Franzke B, Kelecevic S, Maier A, Pantic J, Srienc S, Cellnigg K, Solomon SM, Zötsch C, Aschauer R, Unterberger S, Zöhrer PA, Bragagna L, Strasser EM, Wessner B, Wagner KH. The influence of vitamin D supplementation and strength training on health biomarkers and chromosomal damage in community-dwelling older adults. Redox Biol 2023; 61:102640. [PMID: 36857929 PMCID: PMC9986641 DOI: 10.1016/j.redox.2023.102640] [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: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023] Open
Abstract
Older adults lack of proper physical activity which is often accompanied by vitamin D deficiency. Those factors are known to contribute to health issues in the later years of life. The main goal of this intervention study was to investigate the effect of different vitamin D supplementation strategies for 4 weeks solely or combined with a 10-week strength training program on chromosomal stability in peripheral blood mononuclear cells in community-dwelling older people. One hundred women and men (65-85 years) received either vitamin D3 daily (800 IU), a monthly dose (50.000 IU) or placebo for 17 weeks. All groups received 400 mg calcium daily. The fitness status of the study participants was measured using the 30- second chair stand test, the handgrip strength test and the 6-min walk test. The cytokinesis block micronucleus cytome (CBMN) assay was applied to analyze chromosomal anomalies, including cytotoxic and genotoxic parameters. Changes in antioxidant markers were measured in plasma. Walking distance and chair stand performance improved significantly. Increased levels of the parameters of the CBMN assay were detected for all intervention groups at study end. At baseline micronuclei (MNi) frequency correlated significantly with BMI in both sexes (females: r = 0.369, p = 0.034; males: r = 0.265, p = 0.035), but not with vitamin D serum levels. In females, body fat (r = 0.372, p < 0.001) and functional parameter using the 30-s chair stand test (r = 0.311, p = 0.002) correlated significantly with MNi frequency. Interestingly, not vitamin D supplementation but 10 weeks of resistance training increased MNi frequency indicating elevated chromosomal instability and also adverse effects on antioxidant markers including glutathione and FRAP were detected in the group of community-dwelling older adults.
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Affiliation(s)
- Agnes Draxler
- Department of Nutritional Sciences, University of Vienna, Austria; Vienna Doctoral School for Pharmaceutical, Nutritional and Sport Sciences (PhaNuSpo), University of Vienna, Josef Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Bernhard Franzke
- Department of Nutritional Sciences, University of Vienna, Austria; Research Platform Active Ageing, University of Vienna, Austria.
| | - Sanja Kelecevic
- Department of Nutritional Sciences, University of Vienna, Austria.
| | - Alexander Maier
- Department of Nutritional Sciences, University of Vienna, Austria.
| | - Jelena Pantic
- Department of Nutritional Sciences, University of Vienna, Austria.
| | - Simon Srienc
- Department of Nutritional Sciences, University of Vienna, Austria.
| | | | | | - Carina Zötsch
- Department of Nutritional Sciences, University of Vienna, Austria.
| | - Rudolf Aschauer
- Department of Nutritional Sciences, University of Vienna, Austria; Centre for Sport Science and University Sports, University of Vienna, Austria; Vienna Doctoral School for Pharmaceutical, Nutritional and Sport Sciences (PhaNuSpo), University of Vienna, Josef Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Sandra Unterberger
- Department of Nutritional Sciences, University of Vienna, Austria; Centre for Sport Science and University Sports, University of Vienna, Austria; Vienna Doctoral School for Pharmaceutical, Nutritional and Sport Sciences (PhaNuSpo), University of Vienna, Josef Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Patrick A Zöhrer
- Department of Nutritional Sciences, University of Vienna, Austria; Research Platform Active Ageing, University of Vienna, Austria; Vienna Doctoral School for Pharmaceutical, Nutritional and Sport Sciences (PhaNuSpo), University of Vienna, Josef Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Laura Bragagna
- Department of Nutritional Sciences, University of Vienna, Austria; Vienna Doctoral School for Pharmaceutical, Nutritional and Sport Sciences (PhaNuSpo), University of Vienna, Josef Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Eva-Maria Strasser
- Karl Landsteiner Institute for Remobilization and Functional Health/Institute for Physical Medicine and Rehabilitation, Kaiser Franz Joseph Hospital, Social Medical Center South, Vienna, Austria.
| | - Barbara Wessner
- Research Platform Active Ageing, University of Vienna, Austria; Centre for Sport Science and University Sports, University of Vienna, Austria; Vienna Doctoral School for Pharmaceutical, Nutritional and Sport Sciences (PhaNuSpo), University of Vienna, Josef Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Karl-Heinz Wagner
- Department of Nutritional Sciences, University of Vienna, Austria; Research Platform Active Ageing, University of Vienna, Austria.
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24
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Amurri L, Horvat B, Iampietro M. Interplay between RNA viruses and cGAS/STING axis in innate immunity. Front Cell Infect Microbiol 2023; 13:1172739. [PMID: 37077526 PMCID: PMC10106766 DOI: 10.3389/fcimb.2023.1172739] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 03/21/2023] [Indexed: 04/05/2023] Open
Abstract
While the function of cGAS/STING signalling axis in the innate immune response to DNA viruses is well deciphered, increasing evidence demonstrates its significant contribution in the control of RNA virus infections. After the first evidence of cGAS/STING antagonism by flaviviruses, STING activation has been detected following infection by various enveloped RNA viruses. It has been discovered that numerous viral families have implemented advanced strategies to antagonize STING pathway through their evolutionary path. This review summarizes the characterized cGAS/STING escape strategies to date, together with the proposed mechanisms of STING signalling activation perpetrated by RNA viruses and discusses possible therapeutic approaches. Further studies regarding the interaction between RNA viruses and cGAS/STING-mediated immunity could lead to major discoveries important for the understanding of immunopathogenesis and for the treatment of RNA viral infections.
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25
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Panchbhai A, Savash Ishanzadeh MC, Sidali A, Solaiman N, Pankanti S, Kanagaraj R, Murphy JJ, Surendranath K. A deep learning workflow for quantification of micronuclei in DNA damage studies in cultured cancer cell lines: A proof of principle investigation. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2023; 232:107447. [PMID: 36889248 DOI: 10.1016/j.cmpb.2023.107447] [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: 01/15/2022] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
The cytokinesis block micronucleus assay is widely used for measuring/scoring/counting micronuclei, a marker of genome instability in cultured and primary cells. Though a gold standard method, this is a laborious and time-consuming process with person-to-person variation observed in quantification of micronuclei. We report in this study the utilisation of a new deep learning workflow for detection of micronuclei in DAPI stained nuclear images. The proposed deep learning framework achieved an average precision of >90% in detection of micronuclei. This proof of principle investigation in a DNA damage studies laboratory supports the idea of deploying AI powered tools in a cost-effective manner for repetitive and laborious tasks with relevant computational expertise. These systems will also help improving the quality of data and wellbeing of researchers.
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Affiliation(s)
- Anand Panchbhai
- Logy.AI, Machine Learning Research Division, Indian Institute of Technology Bhilai, Raipur India.
| | | | - Ahmed Sidali
- Genome engineering laboratory, University of Westminster, London W1W 6UW, United Kingdom
| | - Nadeen Solaiman
- Genome engineering laboratory, University of Westminster, London W1W 6UW, United Kingdom
| | - Smarana Pankanti
- Logy.AI, Machine Learning Research Division, Indian Institute of Technology Bhilai, Raipur India
| | - Radhakrishnan Kanagaraj
- Genome engineering laboratory, University of Westminster, London W1W 6UW, United Kingdom; School of Life Sciences, University of Bedfordshire, Park Square, Luton LU1 3JU, United Kingdom
| | - John J Murphy
- Genome engineering laboratory, University of Westminster, London W1W 6UW, United Kingdom
| | - Kalpana Surendranath
- Genome engineering laboratory, University of Westminster, London W1W 6UW, United Kingdom.
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26
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Pezone A, Olivieri F, Napoli MV, Procopio A, Avvedimento EV, Gabrielli A. Inflammation and DNA damage: cause, effect or both. Nat Rev Rheumatol 2023; 19:200-211. [PMID: 36750681 DOI: 10.1038/s41584-022-00905-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2022] [Indexed: 02/09/2023]
Abstract
Inflammation is a biological response involving immune cells, blood vessels and mediators induced by endogenous and exogenous stimuli, such as pathogens, damaged cells or chemicals. Unresolved (chronic) inflammation is characterized by the secretion of cytokines that maintain inflammation and redox stress. Mitochondrial or nuclear redox imbalance induces DNA damage, which triggers the DNA damage response (DDR) that is orchestrated by ATM and ATR kinases, which modify gene expression and metabolism and, eventually, establish the senescent phenotype. DDR-mediated senescence is induced by the signalling proteins p53, p16 and p21, which arrest the cell cycle in G1 or G2 and promote cytokine secretion, producing the senescence-associated secretory phenotype. Senescence and inflammation phenotypes are intimately associated, but highly heterogeneous because they vary according to the cell type that is involved. The vicious cycle of inflammation, DNA damage and DDR-mediated senescence, along with the constitutive activation of the immune system, is the core of an evolutionarily conserved circuitry, which arrests the cell cycle to reduce the accumulation of mutations generated by DNA replication during redox stress caused by infection or inflammation. Evidence suggests that specific organ dysfunctions in apparently unrelated diseases of autoimmune, rheumatic, degenerative and vascular origins are caused by inflammation resulting from DNA damage-induced senescence.
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Affiliation(s)
- Antonio Pezone
- Dipartimento di Biologia, Università Federico II, Napoli, Italy.
| | - Fabiola Olivieri
- Dipartimento di Scienze Cliniche e Molecolari, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy
- Clinica di Medicina di Laboratorio e di Precisione, IRCCS INRCA, Ancona, Italy
| | - Maria Vittoria Napoli
- Dipartimento di Scienze Cliniche e Molecolari, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy
| | - Antonio Procopio
- Dipartimento di Scienze Cliniche e Molecolari, DISCLIMO, Università Politecnica delle Marche, Ancona, Italy
- Clinica di Medicina di Laboratorio e di Precisione, IRCCS INRCA, Ancona, Italy
| | - Enrico Vittorio Avvedimento
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Istituto di Endocrinologia ed Oncologia Sperimentale del C.N.R., Università Federico II, Napoli, Italy.
| | - Armando Gabrielli
- Fondazione di Medicina Molecolare e Terapia Cellulare, Università Politecnica delle Marche, Ancona, Italy.
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27
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Song S, Jung S, Kwon M. Expanding roles of centrosome abnormalities in cancers. BMB Rep 2023; 56:216-224. [PMID: 36945828 PMCID: PMC10140484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/15/2023] [Accepted: 03/22/2023] [Indexed: 03/23/2023] Open
Abstract
Centrosome abnormalities are hallmarks of human cancers. Structural and numerical centrosome abnormalities correlate with tumor aggressiveness and poor prognosis, implicating that centrosome abnormalities could be a cause of tumorigenesis. Since Boveri made his pioneering recognition of the potential causal link between centrosome abnormalities and cancer more than a century ago, there has been significant progress in the field. Here, we review recent advances in the understanding of the causes and consequences of centrosome abnormalities and their connection to cancers. Centrosome abnormalities can drive the initiation and progression of cancers in multiple ways. For example, they can generate chromosome instability through abnormal mitosis, accelerating cancer genome evolution. Remarkably, it is becoming clear that the mechanisms by which centrosome abnormalities promote several steps of tumorigenesis are far beyond what Boveri had initially envisioned. We highlight various cancer-promoting mechanisms exerted by cells with centrosome abnormalities and how these cells possessing oncogenic potential can be monitored. [BMB Reports 2023; 56(4): 216-224].
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Affiliation(s)
- Soohyun Song
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea
- Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
| | - Surim Jung
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea
- Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
| | - Mijung Kwon
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea
- Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 03760, Korea
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28
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Wei J, Arber C, Wray S, Hardy J, Piers TM, Pocock JM. Human myeloid progenitor glucocorticoid receptor activation causes genomic instability, type 1 IFN- response pathway activation and senescence in differentiated microglia; an early life stress model. Glia 2023; 71:1036-1056. [PMID: 36571248 DOI: 10.1002/glia.24325] [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: 06/09/2022] [Revised: 10/26/2022] [Accepted: 12/09/2022] [Indexed: 12/27/2022]
Abstract
One form of early life stress, prenatal exposure to glucocorticoids (GCs), confers a higher risk of psychiatric and neurodevelopmental disorders in later life. Increasingly, the importance of microglia in these disorders is recognized. Studies on GCs exposure during microglial development have been limited, and there are few, if any, human studies. We established an in vitro model of ELS by continuous pre-exposure of human iPS-microglia to GCs during primitive hematopoiesis (the critical stage of iPS-microglial differentiation) and then examined how this exposure affected the microglial phenotype as they differentiated and matured to microglia, using RNA-seq analyses and functional assays. The iPS-microglia predominantly expressed glucocorticoid receptors over mineralocorticoid receptors, and in particular, the GR-α splice variant. Chronic GCs exposure during primitive hematopoiesis was able to recapitulate in vivo ELS effects. Thus, pre-exposure to prolonged GCs resulted in increased type I interferon signaling, the presence of Cyclic GMP-AMP synthase-positive (cGAS) micronuclei, cellular senescence and reduced proliferation in the matured iPS-microglia. The findings from this in vitro ELS model have ramifications for the responses of microglia in the pathogenesis of GC- mediated ELS-associated disorders such as schizophrenia, attention-deficit hyperactivity disorder and autism spectrum disorder.
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Affiliation(s)
- Jingzhang Wei
- Department of Neuroinflammation, University College London Institute of Neurology, London, UK
| | - Charles Arber
- Department of Molecular Neuroscience, University College London Institute of Neurology, London, UK
| | - Selina Wray
- Department of Molecular Neuroscience, University College London Institute of Neurology, London, UK
| | - John Hardy
- Department of Molecular Neuroscience, University College London Institute of Neurology, London, UK
| | - Thomas M Piers
- Department of Neuroinflammation, University College London Institute of Neurology, London, UK
| | - Jennifer M Pocock
- Department of Neuroinflammation, University College London Institute of Neurology, London, UK
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29
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Han Z, Andrš M, Madhavan BK, Kaymak S, Sulaj A, Kender Z, Kopf S, Kihm L, Pepperkok R, Janscak P, Nawroth P, Kumar V. The importance of nuclear RAGE-Mcm2 axis in diabetes or cancer-associated replication stress. Nucleic Acids Res 2023; 51:2298-2318. [PMID: 36807739 PMCID: PMC10018352 DOI: 10.1093/nar/gkad085] [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: 04/01/2022] [Revised: 01/18/2023] [Accepted: 01/26/2023] [Indexed: 02/23/2023] Open
Abstract
An elevated frequency of DNA replication defects is associated with diabetes and cancer. However, data linking these nuclear perturbations to the onset or progression of organ complications remained unexplored. Here, we report that RAGE (Receptor for Advanced Glycated Endproducts), previously believed to be an extracellular receptor, upon metabolic stress localizes to the damaged forks. There it interacts and stabilizes the minichromosome-maintenance (Mcm2-7) complex. Accordingly, RAGE deficiency leads to slowed fork progression, premature fork collapse, hypersensitivity to replication stress agents and reduction of viability, which was reversed by the reconstitution of RAGE. This was marked by the 53BP1/OPT-domain expression and the presence of micronuclei, premature loss-of-ciliated zones, increased incidences of tubular-karyomegaly, and finally, interstitial fibrosis. More importantly, the RAGE-Mcm2 axis was selectively compromised in cells expressing micronuclei in human biopsies and mouse models of diabetic nephropathy and cancer. Thus, the functional RAGE-Mcm2/7 axis is critical in handling replication stress in vitro and human disease.
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Affiliation(s)
- Zhe Han
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
| | - Martin Andrš
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ-14300 Prague, Czech Republic
- Institute of Molecular Cancer Research, University of Zurich, 8057 Zurich, Switzerland
| | - Bindhu K Madhavan
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
| | - Serap Kaymak
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
| | - Alba Sulaj
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
| | - Zoltan Kender
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
| | - Stefan Kopf
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
| | - Lars Kihm
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
| | - Rainer Pepperkok
- European Molecular Biology Laboratory, Advanced Light Microscopy Facility, Heidelberg, Germany
| | - Pavel Janscak
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ-14300 Prague, Czech Republic
- Institute of Molecular Cancer Research, University of Zurich, 8057 Zurich, Switzerland
| | - Peter Nawroth
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- Institute for Immunology, University Hospital of Heidelberg, INF 305, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
| | - Varun Kumar
- Department of Medicine I and Clinical Chemistry, University Hospital of Heidelberg, INF 410, Heidelberg, Germany
- Institute for Immunology, University Hospital of Heidelberg, INF 305, Heidelberg, Germany
- European Molecular Biology Laboratory, Advanced Light Microscopy Facility, Heidelberg, Germany
- German Center of Diabetes Research (DZD), Neuherberg, Germany
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30
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Zhang X, Zhang H, Zhang J, Yang M, Zhu M, Yin Y, Fan X, Yu F. The paradoxical role of radiation-induced cGAS-STING signalling network in tumour immunity. Immunology 2023; 168:375-388. [PMID: 36217274 DOI: 10.1111/imm.13592] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 10/06/2022] [Indexed: 11/27/2022] Open
Abstract
The cyclic GMP-AMP synthase-stimulator of interferon genes (cGAS-STING) pathway is an essential component of the innate immune system and is central to the identification of abnormal DNA leakage caused by ionising radiation (IR) damage. Cell-intrinsic cGAS-STING initiation has been revealed to have tremendous potential for facilitating interferon synthesis and T-cell priming. Targeting the cGAS-STING axis has been proposed as a strategy to improve radiosensitivity or enhance immunosurveillance. However, due to the complex biology of the irradiated tumour microenvironment and the extensive involvement of the cGAS-STING pathway in various physiological and pathological processes, many defects in this strategy limit the therapeutic effect. Here, we outline the molecular mechanisms by which IR activates the cGAS-STING pathway and analyse the dichotomous roles of the cGAS-STING pathway in modulating cancer immunity after radiotherapy (RT). Then, based on the crosstalk between the cGAS-STING pathway and other signalling events induced by IR, such as necroptosis, autophagy and other cellular effects, we discuss the immunomodulatory actions of the broad cGAS-STING signalling network in RT and their potential therapeutic applications. Finally, recent advances in combination therapeutic strategies targeting cGAS-STING in RT are explored.
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Affiliation(s)
- Xiaoyi Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, China
| | - Han Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, China
| | - Jiajia Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, China
| | - Mengdie Yang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, China
| | - Mengqin Zhu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, China
| | - Yuzhen Yin
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, China
| | - Xin Fan
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, China
| | - Fei Yu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, China
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Zhang M, Wang X, Liu C, Zheng Z, Wan J, Yang Y, Chen S, Liu H. G2 and S phase-expressed-1 induces chromosomal instability in esophageal squamous cell carcinoma cells and inhibits cell apoptosis through ROS/JNK signaling. Mol Carcinog 2023; 62:122-134. [PMID: 36193884 DOI: 10.1002/mc.23470] [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: 08/15/2022] [Revised: 09/13/2022] [Accepted: 09/20/2022] [Indexed: 01/25/2023]
Abstract
New diagnostic and therapeutic strategies are urgently needed to improve the prognosis of patients with esophageal squamous cell carcinoma (ESCC), which has high morbidity and mortality. Bioinformatics analysis revealed that cell cycle regulation related molecular G2 and S phase-expressed-1 (GTSE1) was dysregulated in ESCC. In this study, the ectopic expression of GTSE1 was verified in ESCC patients' tissues and cell lines. After overexpression or knockdown of GTSE1 using lentiviral transfection, the effects of GTSE1 on the proliferation, migration, invasion, and apoptosis of ESCC cells were detected. The contribution of GTSE1 in inducing chromosomal missegregation in cells leading to chromosome instability (CIN) has been described. Long-term existence of CIN can increase reactive oxygen species (ROS) generation in ESCC cells, followed by inhibition of apoptosis by activating the c-Jun N-terminal kinase (JNK) signaling pathway, and this inhibition could be relieved after treatment with JNK inhibitor. In vivo experiments, we also confirmed the tumor-promoting effect and mechanism of GTSE1 in ESCC using nude mice model. In this study, we demonstrated that GTSE1 induces CIN in ESCC cells, and increases intracellular ROS production, which leads to cellular oxidative stress, contributes to the activation of the JNK signaling pathway, and thereby inhibits apoptosis leading to ESCC tumorigenesis.
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Affiliation(s)
- Man Zhang
- Key Clinical Laboratory of Henan Province, Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xianzeng Wang
- Department of Thoraric Surgery, Linzhou People's Hospital, Linzhou, China
| | - Cong Liu
- Key Clinical Laboratory of Henan Province, Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhaoyang Zheng
- Department of Medical Laboratory, The Second Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Junhu Wan
- Key Clinical Laboratory of Henan Province, Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ying Yang
- Key Clinical Laboratory of Henan Province, Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shuangshuang Chen
- Department of Medical Laboratory, The Second Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Hongchun Liu
- Key Clinical Laboratory of Henan Province, Department of Medical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Genotoxicity and cytotoxicity of textile production effluents, before and after Bacillus subitilis bioremediation, in Astyanax lacustris (Pisces, Characidae). MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2023; 886:503588. [PMID: 36868696 DOI: 10.1016/j.mrgentox.2023.503588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 01/09/2023] [Accepted: 01/14/2023] [Indexed: 01/19/2023]
Abstract
Textile effluents may be highly toxic and mutagenic. Monitoring studies are important for sustaining the aquatic ecosystems contaminated by these materials, which can cause damage to organisms and loss of biodiversity. We have evaluated the cyto- and genotoxicity of textile effluents on erythrocytes of Astyanax lacustris, before and after bioremediation by Bacillus subitilis treatment. We tested 60 fish (five treatment conditions, four fish per condition, in triplicate). Fish were exposed to contaminants for 7 days. The assays used were biomarker analysis, the micronucleus (MN) test, analysis of cellular morphological changes (CMC), and the comet assay. All concentrations of effluent tested, and the bioremediated effluent, showed damage significantly different from the controls. We conclude that water pollution assessment can be accomplished with these biomarkers. Biodegradation of the textile effluent was only partial, indicating the need for more thorough bioremediation to effect complete neutralization of toxicity.
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Zhang Q, Yang L, Xiao H, Dang Z, Kuang X, Xiong Y, Zhu J, Huang Z, Li M. Pan-cancer analysis of chromothripsis-related gene expression patterns indicates an association with tumor immune and therapeutic agent responses. Front Oncol 2023; 13:1074955. [PMID: 36761982 PMCID: PMC9902954 DOI: 10.3389/fonc.2023.1074955] [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: 10/20/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023] Open
Abstract
Chromothripsis is a catastrophic event involving numerous chromosomal rearrangements in confined genomic regions of one or a few chromosomes, causing complex effects on cells via the extensive structural variation. The development of whole-genome sequencing (WGS) has promoted great progress in exploring the mechanism and effect of chromothripsis. However, the gene expression characteristics of tumors undergone chromothripsis have not been well characterized. In this study, we found that the transcriptional profile of five tumor types experiencing chromothripsis is associated with an immune evasion phenotype. A gene set variation analysis (GSVA) was used to develop a CHP score, which is based on differentially expressed gene sets in the TCGA database, revealing that chromothripsis status in multiple cancers is consistent with an abnormal tumor immune microenvironment and immune cell cytotoxicity. Evaluation using four immunotherapy datasets uncovered the ability of the CHP score to predict immunotherapy response in diverse tumor types. In addition, the CHP score was found to be related to resistance against a variety of anti-tumor drugs, including anti-angiogenesis inhibitors and platinum genotoxins, while EGFR pathway inhibitors were found to possibly be sensitizers for high CHP score tumors. Univariate COX regression analysis indicated that the CHP score can be prognostic for several types of tumors. Our study has defined gene expression characteristics of tumors with chromothripsis, supporting the controversial link between chromothripsis and tumor immunity. We also describe the potential value of the CHP score in predicting the efficacy of immunotherapy and other treatments, elevating chromothripsis as a tool in clinical practice.
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Affiliation(s)
| | | | | | | | | | | | | | - Zhou Huang
- *Correspondence: Zhou Huang, ; Mengxia Li,
| | - Mengxia Li
- *Correspondence: Zhou Huang, ; Mengxia Li,
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34
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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.
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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
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35
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Reimann H, Stopper H, Hintzsche H. Fate of micronuclei and micronucleated cells after treatment of HeLa cells with different genotoxic agents. Arch Toxicol 2023; 97:875-889. [PMID: 36564592 PMCID: PMC9968706 DOI: 10.1007/s00204-022-03433-9] [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: 10/13/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022]
Abstract
Although micronuclei are well-known biomarkers of genotoxic damage, the biological consequences of micronucleus induction are only poorly understood. To further elucidate these consequences, HeLa cells stably expressing histone 2B coupled with green fluorescent protein were used for long-term live cell imaging to investigate the fate of micronuclei and micronucleated cells after treatment of cells with various genotoxic agents (doxorubicin (20, 30 and nM), tert-butyl hydroperoxide (tBHP, 50, 100 and 150 µM), radiation (0.5, 1 and 2 Gy), methyl methanesulfonate (MMS, 20, 25 and 30 µg/ml) and vinblastine (1, 2 and 3 nM)). Most micronuclei persist for multiple cell cycles or reincorporate while micronucleated cells were more prone to cell death, senescence and fatal mitotic errors compared to non-micronucleated cells, which is consistent with previous studies using etoposide. No clear substance-related effects on the fate of micronuclei and micronucleated cells were observed. To further investigate the fate of micronuclei, extrusion of micronuclei was studied with treatments reported as inducing the extrusion of micronuclei. Since extrusion was not observed in HeLa cells, the relevance of extrusion of micronuclei remains unclear. In addition, degradation of micronuclei was analysed via immunostaining of γH2AX, which demonstrated a high level of DNA damage in micronuclei compared to the main nuclei. Furthermore, transduction with two reporter genes (LC3B-dsRed and LaminB1-dsRed) was conducted followed by long-term live cell imaging. While autophagy marker LC3B was not associated with micronuclei, Lamin B1 was found in approximately 50% of all micronuclei. While degradation of micronuclei was not observed to be a frequent fate of micronuclei, the results show impaired stability of DNA and micronuclear envelope indicating rupture of micronuclei as a pre-step to chromothripsis.
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Affiliation(s)
- Hauke Reimann
- Institute of Pharmacology and Toxicology, University of Würzburg, Würzburg, Germany
- Bavarian Health and Food Safety Authority, Erlangen, Germany
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Würzburg, Würzburg, Germany
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36
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Muciño-Hernández G, Acevo-Rodríguez PS, Cabrera-Benitez S, Guerrero AO, Merchant-Larios H, Castro-Obregón S. Nucleophagy contributes to genome stability through degradation of type II topoisomerases A and B and nucleolar components. J Cell Sci 2023; 136:286548. [PMID: 36633090 PMCID: PMC10112964 DOI: 10.1242/jcs.260563] [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: 08/21/2022] [Accepted: 11/24/2022] [Indexed: 01/13/2023] Open
Abstract
The nuclear architecture of mammalian cells can be altered as a consequence of anomalous accumulation of nuclear proteins or genomic alterations. Most of the knowledge about nuclear dynamics comes from studies on cancerous cells. How normal healthy cells maintain genome stability, avoiding accumulation of nuclear damaged material, is less understood. Here, we describe that primary mouse embryonic fibroblasts develop a basal level of nuclear buds and micronuclei, which increase after etoposide-induced DNA double-stranded breaks. Both basal and induced nuclear buds and micronuclei colocalize with the autophagic proteins BECN1 and LC3B (also known as MAP1LC3B) and with acidic vesicles, suggesting their clearance by nucleophagy. Some of the nuclear alterations also contain autophagic proteins and type II DNA topoisomerases (TOP2A and TOP2B), or the nucleolar protein fibrillarin, implying they are also targets of nucleophagy. We propose that basal nucleophagy contributes to genome and nuclear stability, as well as in response to DNA damage.
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Affiliation(s)
- Gabriel Muciño-Hernández
- Departamento de Neurodesarrollo y Fisiología, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510 Mexico City, México
| | - Pilar Sarah Acevo-Rodríguez
- Departamento de Neurodesarrollo y Fisiología, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510 Mexico City, México
| | - Sandra Cabrera-Benitez
- Facultad de Ciencias, Universidad Nacional Autónoma de México, 04510 Mexico City, México
| | - Adán Oswaldo Guerrero
- Laboratorio Nacional de Microscopía Avanzada, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62210 Cuernavaca, Morelos, Mexico
| | - Horacio Merchant-Larios
- Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, 04510 Mexico City, Mexico
| | - Susana Castro-Obregón
- Departamento de Neurodesarrollo y Fisiología, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, 04510 Mexico City, México
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Song JX, Villagomes D, Zhao H, Zhu M. cGAS in nucleus: The link between immune response and DNA damage repair. Front Immunol 2022; 13:1076784. [PMID: 36591232 PMCID: PMC9797516 DOI: 10.3389/fimmu.2022.1076784] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022] Open
Abstract
As the first barrier of host defense, innate immunity sets up the parclose to keep out external microbial or virus attacks. Depending on the type of pathogens, several cytoplasm pattern recognition receptors exist to sense the attacks from either foreign or host origins, triggering the immune response to battle with the infections. Among them, cGAS-STING is the major pathway that mainly responds to microbial DNA, DNA virus infections, or self-DNA, which mainly comes from genome instability by-product or released DNA from the mitochondria. cGAS was initially found functional in the cytoplasm, although intriguing evidence indicates that cGAS exists in the nucleus where it is involved in the DNA damage repair process. Because the close connection between DNA damage response and immune response and cGAS recognizes DNA in length-dependent but DNA sequence-independent manners, it is urgent to clear the function balance of cGAS in the nucleus versus cytoplasm and how it is shielded from recognizing the host origin DNA. Here, we outline the current conception of immune response and the regulation mechanism of cGAS in the nucleus. Furthermore, we will shed light on the potential mechanisms that are restricted to be taken away from self-DNA recognition, especially how post-translational modification regulates cGAS functions.
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Affiliation(s)
- Jia-Xian Song
- Institute for Translation Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Deana Villagomes
- Department of Molecular and Cellular Biology, University of California Davis, One Shields Avenue, Davis, CA, United States
| | - Hongchang Zhao
- Department of Microbiology and Molecular Genetics, University of California Davis, One Shields Avenue, Davis, CA, United States
| | - Min Zhu
- Institute for Translation Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China,*Correspondence: Min Zhu,
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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.
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Micronuclei in Circulating Tumor Associated Macrophages Predicts Progression in Advanced Colorectal Cancer. Biomedicines 2022; 10:biomedicines10112898. [PMID: 36428466 PMCID: PMC9687174 DOI: 10.3390/biomedicines10112898] [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: 09/16/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Micronuclei (MN) are fragments of damaged nucleic acids which budded from a cell’s nuclei as a repair mechanism for chromosomal instabilities, which within circulating white blood cells (cWBCs) signifies increased cancer risk, and in tumor cells indicates aggressive subtypes. MN form overtime and with therapy induction, which requires sequential monitoring of rarer cell subpopulations. We evaluated the peripheral blood (7.5 mL) for MN in Circulating Stromal Cells (CStCs) in a prospective pilot study of advanced colorectal cancer patients (n = 25), identifying MN by DAPI+ structures (<3 µm) within the cellular cytoplasm. MN+ was compared to genotoxic induction, progression free survival (PFS) or overall survival (OS) hazard ratios (HR) over three years. MN were identified in 44% (n = 11/25) of CStCs, but were not associated with genotoxic therapies (p = 0.110) nor stage (p = 0.137). However, presence of MN in CStCs was independently prognostic for PFS (HR = 17.2, 95% CI 3.6−80.9, p = 0.001) and OS (HR = 70.3, 95% CI 6.6−752.8, p = 0.002), indicating a non-interventional mechanism in their formation. Additionally, MN formation did not appear associated with chemotherapy induction, but was correlated with tumor response. MN formation in colorectal cancer is an underlying biological mechanism that appears independent of chemotherapeutic genotoxins, changes during treatment, and predicts for poor clinical outcomes.
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40
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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.
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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
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Boulaka A, Mantellou P, Stanc GM, Souka E, Valavanis C, Saxami G, Mitsou E, Koutrotsios G, Zervakis GI, Kyriacou A, Pletsa V, Georgiadis P. Genoprotective activity of the Pleurotus eryngii mushrooms following their in vitro and in vivo fermentation by fecal microbiota. Front Nutr 2022; 9:988517. [PMID: 36082029 PMCID: PMC9445615 DOI: 10.3389/fnut.2022.988517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/08/2022] [Indexed: 11/19/2022] Open
Abstract
Pleurotus eryngii mushrooms are commercially cultivated and widely consumed due to their organoleptic properties, and the low caloric and high nutritional value. In addition, they contain various biologically active and health-promoting compounds; very recently, their genoprotective effect in Caco-2 cells after their fermentation by the human fecal microbiota was also documented. In the current study, the effect of P. eryngii pre- and post-fermentation supernatants in micronuclei formation was evaluated in human lymphocytes. In addition, the genoprotective properties of increasing concentrations of aqueous extracts from P. eryngii mushrooms (150, 300, 600 mg/kg) against the cyclophosphamide-induced DNA damage were studied in young and elderly female and male mice in bone marrow and whole blood cells. The ability of the highest dose (600 mg/kg) to regulate the main cellular signaling pathways was also evaluated in gut and liver tissues of female animals by quantifying the mRNA expression of NrF2, Nfkβ, DNMT1, and IL-22 genes. P. eryngii post-fermentation, but not pre-fermentation, supernatants were able to protect human lymphocytes from the mitomycin C-induced DNA damage in a dose-dependent manner. Similarly, genoprotection was also observed in bone marrow cells of mice treated by gavage with P. eryngii extract. The effect was observed in all the experimental groups of mice (young and elderly, male and female) and was more potent in young female mice. Overexpression of all genes examined was observed in both tissues, mainly among the elderly animals. In conclusion, P. eryngii mushrooms were shown to maintain genome integrity through protecting cells from genotoxic insults. These beneficial effects can be attributed to their antioxidant and immunomodulatory properties, as well as their ability to regulate the cell’s epigenetic mechanisms and maintain cell homeostasis.
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Affiliation(s)
- Athina Boulaka
- Laboratory of Environment and Health, Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece
| | - Panagiota Mantellou
- Laboratory of Environment and Health, Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece
- Department of Biological Applications and Technology, University of Ioannina, Ioannina, Greece
| | - Gabriela-Monica Stanc
- Department of Pathology, Molecular Pathology Unit, Metaxa Cancer Hospital, Piraeus, Greece
| | - Efthymia Souka
- Department of Pathology, Molecular Pathology Unit, Metaxa Cancer Hospital, Piraeus, Greece
| | - Christoς Valavanis
- Department of Pathology, Molecular Pathology Unit, Metaxa Cancer Hospital, Piraeus, Greece
| | - Georgia Saxami
- Department of Nutrition and Dietetics, Harokopio University, Athens, Greece
| | - Evdokia Mitsou
- Department of Nutrition and Dietetics, Harokopio University, Athens, Greece
| | - Georgios Koutrotsios
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Athens, Greece
| | - Georgios I. Zervakis
- Laboratory of General and Agricultural Microbiology, Agricultural University of Athens, Athens, Greece
| | | | - Vasiliki Pletsa
- Laboratory of Environment and Health, Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece
| | - Panagiotis Georgiadis
- Laboratory of Environment and Health, Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece
- *Correspondence: Panagiotis Georgiadis,
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Single-Cell Transcriptome Analysis of Radiation Pneumonitis Mice. Antioxidants (Basel) 2022; 11:antiox11081457. [PMID: 35892659 PMCID: PMC9331247 DOI: 10.3390/antiox11081457] [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: 06/06/2022] [Revised: 07/14/2022] [Accepted: 07/22/2022] [Indexed: 12/10/2022] Open
Abstract
Radiation-induced lung injury (RILI), especially radiation pneumonitis (RP), is a common clinical complication associated with thoracic radiotherapy for malignant tumors. However, the specific contributions of each cell subtype to this process are unknown. Here, we provide the single-cell pathology landscape of the RP in a mouse model by unbiased single-cell RNA-seq (scRNA-seq). We found a decline of type 2 alveolar cells in the RP lung tissue, with an expansion of macrophages, especially the Fabp4low and Spp1high subgroup, while Fabp4high macrophages were almost depleted. We observed an elevated expression of multiple mitochondrial genes in the RP group, indicating a type 2 alveolar cell (AT2) response to oxidative stress. We also calculated the enrichment of a cGAS-STING signaling pathway, which may be involved in regulating inflammatory responses and cancer progression in AT2 cells of PR mice. We delineate markers and transcriptional states, identify a type 2 alveolar cell, and uncover fundamental determinants of lung fibrosis and inflammatory response in RP lung tissue of mice.
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43
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Wang Y, Oda S, Suzuki MG, Mitani H, Aoki F. Cell cycle-dependent radiosensitivity in mouse zygotes. DNA Repair (Amst) 2022; 117:103370. [PMID: 35863142 DOI: 10.1016/j.dnarep.2022.103370] [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: 03/14/2022] [Revised: 06/22/2022] [Accepted: 07/05/2022] [Indexed: 11/18/2022]
Abstract
Mammalian zygotes are hypersensitive to radiation exposure compared with later-stage embryos and somatic cells, which may be due to an unusual DNA damage response (DDR). DNA damage checkpoints are an essential part of the DDR, allowing for faithful replication of cells. Although the DDR and radiosensitivity of somatic cells are dependent on the cell cycle phase, it remains largely unclear how the irradiation of zygotes at different phases affects cell cycle progression and preimplantation development. Here, mouse zygotes were irradiated with 10 Gy γ-rays at all four cell cycle phases. DNA damage checkpoints were activated by γ-irradiation at the G2 phase, but not at the G1, S, and M phases. The absence of DNA damage checkpoints at the G1 and M phases seems to be due to the low abundance of phosphorylated CHK2, which plays a key role in checkpoint activation in response to ionizing radiation. The cause of the inoperative S phase checkpoint may lie downstream of CHK2 activation. The inactive DNA damage checkpoints at the G1 and S phases contributed to micronucleus formation in the subsequent 2-cell stage, whereas irradiation at the M phase led to the highest incidence of chromatin bridges. The low developmental rates of embryos irradiated at the G1, S, and M phases suggest that embryos with these two types of chromatin abnormalities are prone to developmental failure. Taken together, these results suggest that the radiosensitivity of zygotes can be ascribed to a defective DDR at the G1, S, and M phases.
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Affiliation(s)
- Yuan Wang
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Shoji Oda
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Masataka G Suzuki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Hiroshi Mitani
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Fugaku Aoki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan.
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44
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Cyto-Genotoxic Effect Causing Potential of Polystyrene Micro-Plastics in Terrestrial Plants. NANOMATERIALS 2022; 12:nano12122024. [PMID: 35745363 PMCID: PMC9228652 DOI: 10.3390/nano12122024] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 12/03/2022]
Abstract
The polystyrene micro-plastics (Ps-MPs) is one of the leading pollutants found in both aquatic and terrestrial ecosystems. While most of the studies on the morphology and cyto-toxicity of MPs have been based on aquatic organisms, their effects on terrestrial plants are still scarcely known. The present study was an attempt to measure the effect of different sizes (80, 100, 200, 500, 1000, 2000, 4000, and 8000 nm) and concentrations (100 and 400 mg/L) of Ps-MPs on the root length and chromosomes of root tip cells of Allium cepa using A. cepa root chromosomal aberration assay. Large size Ps-MPs (4000 and 8000 nm) showed the highest reduction in A. cepa root length; however, the differences were not significant (at p ≤ 0.05), with respect to negative control (Milli-Q water). The mitotic index showed both significant size- and concentration-dependent decreases, being the lowest (12.06%) in 100 nm at 100 mg/L concentration, with respect to the control (25.05%). The chromosomal abnormality index (CAI) and nuclear abnormality index (NAI) showed significant decreases, with respect to negative control. In addition, the induction of micro-nucleated cells was also observed in Allium root tip cells, when treated with MPs of all sizes, which can predict direct DNA damage to the plant cells. Hence, we conclude that most of the MP sizes caused cyto-toxic and nuclear damage by adversely impacting the spindle formation and induction of micro-nucleated cells in Allium cepa root tip cells. To the best of our knowledge, this is the first study that showed the effect of considerable size range of Ps-MP sizes on the root length and cell division in plants.
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45
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Donker L, Godinho SA. Too close for comfort? Endomembranes promote missegregation by enclosing lost chromosomes. J Cell Biol 2022; 221:e202204114. [PMID: 35536317 PMCID: PMC9097545 DOI: 10.1083/jcb.202204114] [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] [Indexed: 11/22/2022] Open
Abstract
Correct segregation of chromosomes during mitosis is essential to prevent aneuploidy. In this issue, Ferrandiz et al. (2022. J. Cell Biol.https://doi.org/10.1083/jcb.202203021) show that endomembranes can promote chromosome missegregation by "ensheathing" misaligned chromosomes, preventing their integration into the metaphase plate. Their findings point toward endomembranes as a potential risk factor for aneuploidy.
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Affiliation(s)
- Lisa Donker
- Barts Cancer Institute, Queen Mary University of London, London, UK
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46
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Nuclear p120 catenin is a component of the perichromosomal layer and coordinates sister chromatid segregation during mitosis in lung cancer cells. Cell Death Dis 2022; 13:526. [PMID: 35660718 PMCID: PMC9167299 DOI: 10.1038/s41419-022-04929-z] [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: 12/19/2021] [Revised: 05/04/2022] [Accepted: 05/09/2022] [Indexed: 01/21/2023]
Abstract
Abnormal expression of p120 catenin is associated with the malignant phenotype in human lung cancer. Numerous studies have focused on the function of p120 catenin in the juxta-membrane compartment. However, the role of nuclear p120 catenin remains unclear. In this study, the dynamic changes in nuclear p120 catenin localization during cell cycle progression were investigated. Immunofluorescent staining, FACS analysis, and western blotting revealed that nuclear p120 catenin is a major architectural constituent of the chromosome periphery during mitosis. During mitosis, granule-like p120 catenin dispersed into a cloudy-like structure and formed cordon-like structures surrounding the condensed chromosomes to create the peri-chromosomal layer. Interestingly, lumican and p120 catenin colocalized at the spindle fiber where the perichromosomal layer connects to the condensed chromosomes during mitosis. Furthermore, downregulation of p120 catenin using a specific siRNA induced cell cycle stalling in the G2/M phase and promoted aneuploidy. This study validates the role of nuclear p120 catenin in the formation of the chromosome periphery and reveals the p120 catenin-lumican interaction may couple orientation of cell division with the segregation of sister chromatids during mitosis. Our data suggest the protective role of p120 catenin in maintaining the integrity of chromosomes, and also warrants further studies to evaluate the contribution of the loss of p120 catenin to the creation of gene rearrangement in cancer evolution and tumor progression.
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47
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Nail AN, McCaffrey LM, Banerjee M, Ferragut Cardoso AP, States JC. Chronic arsenic exposure suppresses ATM pathway activation in human keratinocytes. Toxicol Appl Pharmacol 2022; 446:116042. [DOI: 10.1016/j.taap.2022.116042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 04/19/2022] [Accepted: 04/27/2022] [Indexed: 01/15/2023]
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48
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Genetic and Molecular Characterization of the Immortalized Murine Hepatic Stellate Cell Line GRX. Cells 2022; 11:cells11091504. [PMID: 35563813 PMCID: PMC9102025 DOI: 10.3390/cells11091504] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 01/27/2023] Open
Abstract
The murine cell line GRX has been introduced as an experimental tool to study aspects of hepatic stellate cell biology. It was established from livers of C3H/HeN mice that were infected with cercariae of Schistosoma mansoni. Although these cells display a myofibroblast phenotype, they can accumulate intracellular lipids and acquire a fat-storing lipocyte phenotype when treated with retinol, insulin, and indomethacin. We have performed genetic characterization of GRX and established a multi-loci short tandem repeat (STR) signature for this cell line that includes 18 mouse STR markers. Karyotyping further revealed that this cell line has a complex genotype with various chromosomal aberrations. Transmission electron microscopy revealed that GRX cells produce large quantities of viral particles belonging to the gammaretroviral genus of the Retroviridae family as assessed by next generation mRNA sequencing and Western blot analysis. Rolling-circle-enhanced-enzyme-activity detection (REEAD) revealed the absence of retroviral integrase activity in cell culture supernatants, most likely as a result of tetherin-mediated trapping of viral particles at the cell surface. Furthermore, staining against schistosome gut-associated circulating anodic antigens and cercarial O- and GSL-glycans showed that the cell line lacks S. mansoni-specific glycostructures. Our findings will now help to fulfill the recommendations for cellular authentications required by many granting agencies and scientific journals when working with GRX cells. Moreover, the definition of a characteristic STR profile will increase the value of GRX cells in research and provides an important benchmark to identify intra-laboratory cell line heterogeneity, discriminate between different mouse cell lines, and to avoid misinterpretation of experimental findings by usage of misidentified or cross-contaminated cells.
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49
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Provasek VE, Mitra J, Malojirao VH, Hegde ML. DNA Double-Strand Breaks as Pathogenic Lesions in Neurological Disorders. Int J Mol Sci 2022; 23:ijms23094653. [PMID: 35563044 PMCID: PMC9099445 DOI: 10.3390/ijms23094653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 02/07/2023] Open
Abstract
The damage and repair of DNA is a continuous process required to maintain genomic integrity. DNA double-strand breaks (DSBs) are the most lethal type of DNA damage and require timely repair by dedicated machinery. DSB repair is uniquely important to nondividing, post-mitotic cells of the central nervous system (CNS). These long-lived cells must rely on the intact genome for a lifetime while maintaining high metabolic activity. When these mechanisms fail, the loss of certain neuronal populations upset delicate neural networks required for higher cognition and disrupt vital motor functions. Mammalian cells engage with several different strategies to recognize and repair chromosomal DSBs based on the cellular context and cell cycle phase, including homologous recombination (HR)/homology-directed repair (HDR), microhomology-mediated end-joining (MMEJ), and the classic non-homologous end-joining (NHEJ). In addition to these repair pathways, a growing body of evidence has emphasized the importance of DNA damage response (DDR) signaling, and the involvement of heterogeneous nuclear ribonucleoprotein (hnRNP) family proteins in the repair of neuronal DSBs, many of which are linked to age-associated neurological disorders. In this review, we describe contemporary research characterizing the mechanistic roles of these non-canonical proteins in neuronal DSB repair, as well as their contributions to the etiopathogenesis of selected common neurological diseases.
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Affiliation(s)
- Vincent E. Provasek
- Department of Neurosurgery, Center for Neuroregeneration, Houston Methodist Research Institute, Houston, TX 77030, USA; (V.E.P.); (V.H.M.)
- College of Medicine, Texas A&M University, College Station, TX 77843, USA
| | - Joy Mitra
- Department of Neurosurgery, Center for Neuroregeneration, Houston Methodist Research Institute, Houston, TX 77030, USA; (V.E.P.); (V.H.M.)
- Correspondence: (J.M.); (M.L.H.)
| | - Vikas H. Malojirao
- Department of Neurosurgery, Center for Neuroregeneration, Houston Methodist Research Institute, Houston, TX 77030, USA; (V.E.P.); (V.H.M.)
| | - Muralidhar L. Hegde
- Department of Neurosurgery, Center for Neuroregeneration, Houston Methodist Research Institute, Houston, TX 77030, USA; (V.E.P.); (V.H.M.)
- College of Medicine, Texas A&M University, College Station, TX 77843, USA
- Department of Neurosciences, Weill Cornell Medical College, New York, NY 11021, USA
- Correspondence: (J.M.); (M.L.H.)
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50
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Giordano AMS, Luciani M, Gatto F, Abou Alezz M, Beghè C, Della Volpe L, Migliara A, Valsoni S, Genua M, Dzieciatkowska M, Frati G, Tahraoui-Bories J, Giliani SC, Orcesi S, Fazzi E, Ostuni R, D'Alessandro A, Di Micco R, Merelli I, Lombardo A, Reijns MAM, Gromak N, Gritti A, Kajaste-Rudnitski A. DNA damage contributes to neurotoxic inflammation in Aicardi-Goutières syndrome astrocytes. J Exp Med 2022; 219:213058. [PMID: 35262626 PMCID: PMC8916121 DOI: 10.1084/jem.20211121] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 11/22/2021] [Accepted: 01/24/2022] [Indexed: 01/09/2023] Open
Abstract
Aberrant induction of type I IFN is a hallmark of the inherited encephalopathy Aicardi-Goutières syndrome (AGS), but the mechanisms triggering disease in the human central nervous system (CNS) remain elusive. Here, we generated human models of AGS using genetically modified and patient-derived pluripotent stem cells harboring TREX1 or RNASEH2B loss-of-function alleles. Genome-wide transcriptomic analysis reveals that spontaneous proinflammatory activation in AGS astrocytes initiates signaling cascades impacting multiple CNS cell subsets analyzed at the single-cell level. We identify accumulating DNA damage, with elevated R-loop and micronuclei formation, as a driver of STING- and NLRP3-related inflammatory responses leading to the secretion of neurotoxic mediators. Importantly, pharmacological inhibition of proapoptotic or inflammatory cascades in AGS astrocytes prevents neurotoxicity without apparent impact on their increased type I IFN responses. Together, our work identifies DNA damage as a major driver of neurotoxic inflammation in AGS astrocytes, suggests a role for AGS gene products in R-loop homeostasis, and identifies common denominators of disease that can be targeted to prevent astrocyte-mediated neurotoxicity in AGS.
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Affiliation(s)
- Anna Maria Sole Giordano
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, School of Medicine, Milan, Italy
| | - Marco Luciani
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, School of Medicine, Milan, Italy
| | - Francesca Gatto
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Monah Abou Alezz
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Chiara Beghè
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Lucrezia Della Volpe
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, School of Medicine, Milan, Italy
| | - Alessandro Migliara
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, School of Medicine, Milan, Italy
| | - Sara Valsoni
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Marco Genua
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Giacomo Frati
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Julie Tahraoui-Bories
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Silvia Clara Giliani
- Department of Molecular and Translational Medicine, "Angelo Nocivelli" Institute for Molecular Medicine, University of Brescia, Azienda Socio Sanitaria Territoriale Spedali Civili, Brescia, Italy
| | - Simona Orcesi
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy.,Child Neurology and Psychiatry Unit, Istituto di Ricovero e Cura a Carattere Scientifico Mondino Foundation, Pavia, Italy
| | - Elisa Fazzi
- Unit of Child Neurology and Psychiatry, Brescia, Department of Clinical and Experimental Sciences, University of Brescia, Azienda Socio Sanitaria Territoriale Spedali Civili, Brescia, Italy
| | - Renato Ostuni
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Raffaella Di Micco
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Ivan Merelli
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Angelo Lombardo
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Martin A M Reijns
- Medical Research Council Human Genetics Unit, Institute of Genetics and Cancer, The University of Edinburgh, Edinburgh, UK
| | - Natalia Gromak
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Angela Gritti
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Anna Kajaste-Rudnitski
- San Raffaele Telethon Institute for Gene Therapy, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
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