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Yu F, Yang L, Zhang R, Hu F, Yuan Y, Wang Z, Yang W. Low levels of supercoiled mitochondrial DNA are involved in heart failure induced by transverse aortic constriction in mice via an inflammatory response mediated by ZBP1. Exp Cell Res 2024:114187. [PMID: 39069152 DOI: 10.1016/j.yexcr.2024.114187] [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: 05/12/2024] [Revised: 07/02/2024] [Accepted: 07/25/2024] [Indexed: 07/30/2024]
Abstract
BACKGROUND Inflammation in the myocardium plays a critical role in cardiac remodeling and the pathophysiology of heart failure (HF). Previous studies have shown that mitochondrial DNA (mtDNA) can exist in different topological forms. However, the specific influence of the ratio of supercoiled/relaxed mtDNA on the inflammatory response in cardiomyocytes remains poorly understood. The aim of this study was to elucidate the differential effects of different mtDNA types on cardiomyocyte inflammation through regulation of ZBP1. MATERIALS AND METHODS A mouse model of HF was established by transverse aortic constriction (TAC) or doxorubicin (Doxo) induction. Histopathological changes were assessed by HE staining. ELISA was used to measure cytokine levels (IL-1β and IL-6). Southern blot analysis was performed to examine the different topology of mtDNA. Pearson correlation analysis was used to determine the correlation between the ratio of supercoiled/relaxed mtDNA and inflammatory cytokines. Reverse transcription quantitative PCR (RT-qPCR) was used to measure the mRNA expression levels of cytokines (IL-1β, IL-6) and Dloop, as an mtDNA marker. RESULTS The ratio of supercoiled to relaxed mtDNA was significantly increased in the myocardium of Doxo-induced mice, whereas no significant changes were observed in TAC-induced mice. The levels of IL-1β and IL-6 were positively correlated with the cytoplasmic mtDNA supercoiled/relaxed circle ratio. Different mtDNA topology has different effects on inflammatory pathways. Low supercoiled mtDNA primarily activates the NF-κB (Ser536) pathway via ZBP1, whereas high supercoiled mtDNA significantly affects the STAT1 and STAT2 pathways. The RIPK3-NF-κB pathway, as a downstream target of ZBP1, mediates the inflammatory response induced by low supercoiled mtDNA. Knockdown of TLR9 enhances the expression of ZBP1, p-NF-κB, and RIPK3 in cardiomyocytes treated with low supercoiled mtDNA, indicating the involvement of TLR9 in the anti-inflammatory role of ZBP1 in low supercoiled mtDNA-induced inflammation. CONCLUSION Different ratios of supercoiled to relaxed mtDNA influence the inflammatory response of cardiomyocytes and contribute to HF through the involvement of ZBP1. ZBP1, together with its downstream inflammatory mechanisms, mediates the inflammatory response induced by a low ratio of supercoiled mtDNA.
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Affiliation(s)
- Fan Yu
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, Jiangxi, China
| | - Lu Yang
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, Jiangxi, China
| | - Rongjie Zhang
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, Jiangxi, China
| | - Fajia Hu
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, Jiangxi, China
| | - Yong Yuan
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, Jiangxi, China
| | - Zixu Wang
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, Jiangxi, China
| | - Wei Yang
- Department of Cardiovascular Surgery, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330006, Jiangxi, China.
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Gutierrez CDO, Almeida LHDO, Sardi JDCO, Almeida CV, de Oliveira CFR, Marchetto R, Crusca E, Buccini DF, Franco OL, Cardoso MH, Macedo MLR. Boosting the antibacterial potential of a linear encrypted peptide in a Kunitz-type inhibitor (ApTI) through physicochemical-guided approaches. Biochimie 2024:S0300-9084(24)00168-8. [PMID: 39029576 DOI: 10.1016/j.biochi.2024.07.009] [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: 04/09/2024] [Revised: 06/26/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
Bacterial resistance has become a serious public health problem in recent years, thus encouraging the search for new antimicrobial agents. Here, we report an antimicrobial peptide (AMP), called PEPAD, which was designed based on an encrypted peptide from a Kunitz-type plant peptidase inhibitor. PEPAD was capable of rapidly inhibiting and eliminating numerous bacterial species at micromolar concentrations (from 4 μM to 10 μM), with direct membrane activity. It was also observed that the peptide can act synergistically with ciprofloxacin and showed no toxicity in the G. mellonella in vivo assay. Circular dichroism assays revealed that the peptide's secondary structure adopts different scaffolds depending on the environment in which it is inserted. In lipids mimicking bacterial cell membranes, PEPAD adopts a more stable α-helical structure, which is consistent with its membrane-associated mechanism of action. When in contact with lipids mimicking mammalian cells, PEPAD adopts a disordered structure, losing its function and suggesting cellular selectivity. Therefore, these findings make PEPAD a promising candidate for future antimicrobial therapies with low toxicity to the host.
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Affiliation(s)
- Camila de Oliveira Gutierrez
- Laboratório de Purificação de Proteínas e Suas Funções Biológicas, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Luís Henrique de Oliveira Almeida
- Laboratório de Purificação de Proteínas e Suas Funções Biológicas, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Janaina de Cássia Orlandi Sardi
- Laboratório de Purificação de Proteínas e Suas Funções Biológicas, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Claudiane Vilharroel Almeida
- Laboratório de Purificação de Proteínas e Suas Funções Biológicas, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Caio Fernando Ramalho de Oliveira
- Laboratório de Purificação de Proteínas e Suas Funções Biológicas, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Reinaldo Marchetto
- Universidade Estadual Paulista (UNESP), Instituto de Química, Araraquara, São Paulo, Brazil
| | - Edson Crusca
- Universidade Estadual Paulista (UNESP), Instituto de Química, Araraquara, São Paulo, Brazil
| | | | - Octavio Luiz Franco
- S-Inova Biotech, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil; Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil
| | - Marlon Henrique Cardoso
- Laboratório de Purificação de Proteínas e Suas Funções Biológicas, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil; S-Inova Biotech, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil; Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil
| | - Maria Lígia Rodrigues Macedo
- Laboratório de Purificação de Proteínas e Suas Funções Biológicas, Faculdade de Ciências Farmacêuticas, Alimentos e Nutrição, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil.
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3
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Chen F, Tang H, Lin J, Kang R, Tang D, Liu J. Ciprofloxacin is a novel anti-ferroptotic antibiotic. Heliyon 2024; 10:e32571. [PMID: 38961954 PMCID: PMC11219506 DOI: 10.1016/j.heliyon.2024.e32571] [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: 03/11/2024] [Revised: 05/20/2024] [Accepted: 06/05/2024] [Indexed: 07/05/2024] Open
Abstract
Cancer patients undergoing chemotherapy are susceptible to various bacterial infections, necessitating prompt and precise antimicrobial treatment with antibiotics. Ciprofloxacin is a clinically utilized broad-spectrum antimicrobial agent known for its robust antiseptic activity. While ferroptosis, an oxidative form of cell death, has garnered attention as a promising avenue in cancer therapy, the potential impact of ciprofloxacin on the anticancer effects of ferroptosis remains unclear. This study seeks to investigate the potential influence of antibiotics on ferroptosis in human pancreatic ductal adenocarcinoma (PDAC) cells. Here, we report a previously unrecognized role of ciprofloxacin in inhibiting ferroptosis in human PDAC cells. Mechanistically, ciprofloxacin suppresses erastin-induced endoplasmic reticulum (ER) stress through the activating transcription factor 6 (ATF6) and ER to nucleus signaling 1 (ERN1) pathway. Excessive ER stress activation can trigger glutathione peroxidase 4 (GPX4) degradation through autophagic mechanisms. In contrast, ciprofloxacin enhances the protein stability of GPX4, a crucial regulator that suppresses ferroptosis by inhibiting lipid peroxidation. Thus, our study demonstrates the anti-ferroptotic role of ciprofloxacin, highlighting the importance of careful consideration when contemplating the combination of ciprofloxacin with specific ferroptosis inducers in PDAC patients.
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Affiliation(s)
- Fangquan Chen
- DAMP Laboratory, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510150, China
| | - Hu Tang
- DAMP Laboratory, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510150, China
| | - Junhao Lin
- DAMP Laboratory, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510150, China
| | - Rui Kang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Daolin Tang
- Department of Surgery, UT Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Jiao Liu
- DAMP Laboratory, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510150, China
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4
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Bernardino Gomes TM, Vincent AE, Menger KE, Stewart JB, Nicholls TJ. Mechanisms and pathologies of human mitochondrial DNA replication and deletion formation. Biochem J 2024; 481:683-715. [PMID: 38804971 DOI: 10.1042/bcj20230262] [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: 03/22/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/29/2024]
Abstract
Human mitochondria possess a multi-copy circular genome, mitochondrial DNA (mtDNA), that is essential for cellular energy metabolism. The number of copies of mtDNA per cell, and their integrity, are maintained by nuclear-encoded mtDNA replication and repair machineries. Aberrant mtDNA replication and mtDNA breakage are believed to cause deletions within mtDNA. The genomic location and breakpoint sequences of these deletions show similar patterns across various inherited and acquired diseases, and are also observed during normal ageing, suggesting a common mechanism of deletion formation. However, an ongoing debate over the mechanism by which mtDNA replicates has made it difficult to develop clear and testable models for how mtDNA rearrangements arise and propagate at a molecular and cellular level. These deletions may impair energy metabolism if present in a high proportion of the mtDNA copies within the cell, and can be seen in primary mitochondrial diseases, either in sporadic cases or caused by autosomal variants in nuclear-encoded mtDNA maintenance genes. These mitochondrial diseases have diverse genetic causes and multiple modes of inheritance, and show notoriously broad clinical heterogeneity with complex tissue specificities, which further makes establishing genotype-phenotype relationships challenging. In this review, we aim to cover our current understanding of how the human mitochondrial genome is replicated, the mechanisms by which mtDNA replication and repair can lead to mtDNA instability in the form of large-scale rearrangements, how rearranged mtDNAs subsequently accumulate within cells, and the pathological consequences when this occurs.
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Affiliation(s)
- Tiago M Bernardino Gomes
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
- Wellcome Centre for Mitochondrial Research, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
- NHS England Highly Specialised Service for Rare Mitochondrial Disorders, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne NE2 4HH, U.K
| | - Amy E Vincent
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
- Wellcome Centre for Mitochondrial Research, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
| | - Katja E Menger
- Wellcome Centre for Mitochondrial Research, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
| | - James B Stewart
- Wellcome Centre for Mitochondrial Research, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
| | - Thomas J Nicholls
- Wellcome Centre for Mitochondrial Research, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, U.K
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5
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Pauletto M, De Liguoro M. A Review on Fluoroquinolones' Toxicity to Freshwater Organisms and a Risk Assessment. J Xenobiot 2024; 14:717-752. [PMID: 38921651 PMCID: PMC11205205 DOI: 10.3390/jox14020042] [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: 02/21/2024] [Revised: 05/21/2024] [Accepted: 05/28/2024] [Indexed: 06/27/2024] Open
Abstract
Fluoroquinolones (FQs) have achieved significant success in both human and veterinary medicine. However, regulatory authorities have recommended limiting their use, firstly because they can have disabling side effects; secondly, because of the need to limit the spread of antibiotic resistance. This review addresses another concerning consequence of the excessive use of FQs: the freshwater environments contamination and the impact on non-target organisms. Here, an overview of the highest concentrations found in Europe, Asia, and the USA is provided, the sensitivity of various taxa is presented through a comparison of the lowest EC50s from about a hundred acute toxicity tests, and primary mechanisms of FQ toxicity are described. A risk assessment is conducted based on the estimation of the Predicted No Effect Concentration (PNEC). This is calculated traditionally and, in a more contemporary manner, by constructing a normalized Species Sensitivity Distribution curve. The lowest individual HC5 (6.52 µg L-1) was obtained for levofloxacin, followed by ciprofloxacin (7.51 µg L-1), sarafloxacin and clinafloxacin (12.23 µg L-1), and ofloxacin (17.12 µg L-1). By comparing the calculated PNEC with detected concentrations, it is evident that the risk cannot be denied: the potential impact of FQs on freshwater ecosystems is a further reason to minimize their use.
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Affiliation(s)
| | - Marco De Liguoro
- Department of Comparative Biomedicine & Food Science (BCA), University of Padova, Viale dell’Università 16, I-35020 Legnaro, Padova, Italy;
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6
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Fragkoulis G, Hangas A, Fekete Z, Michell C, Moraes C, Willcox S, Griffith JD, Goffart S, Pohjoismäki JO. Linear DNA-driven recombination in mammalian mitochondria. Nucleic Acids Res 2024; 52:3088-3105. [PMID: 38300793 PMCID: PMC11014290 DOI: 10.1093/nar/gkae040] [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: 02/01/2023] [Accepted: 01/11/2024] [Indexed: 02/03/2024] Open
Abstract
Mitochondrial DNA (mtDNA) recombination in animals has remained enigmatic due to its uniparental inheritance and subsequent homoplasmic state, which excludes the biological need for genetic recombination, as well as limits tools to study it. However, molecular recombination is an important genome maintenance mechanism for all organisms, most notably being required for double-strand break repair. To demonstrate the existence of mtDNA recombination, we took advantage of a cell model with two different types of mitochondrial genomes and impaired its ability to degrade broken mtDNA. The resulting excess of linear DNA fragments caused increased formation of cruciform mtDNA, appearance of heterodimeric mtDNA complexes and recombinant mtDNA genomes, detectable by Southern blot and by long range PacBio® HiFi sequencing approach. Besides utilizing different electrophoretic methods, we also directly observed molecular complexes between different mtDNA haplotypes and recombination intermediates using transmission electron microscopy. We propose that the known copy-choice recombination by mitochondrial replisome could be sufficient for the needs of the small genome, thus removing the requirement for a specialized mitochondrial recombinase. The error-proneness of this system is likely to contribute to the formation of pathological mtDNA rearrangements.
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Affiliation(s)
- Georgios Fragkoulis
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Anu Hangas
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Zsófia Fekete
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
- Department of Genetics and Genomics, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary
- Doctoral School of Animal Biotechnology and Animal Science, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary
| | - Craig Michell
- Red Sea Research Center, Division of Biological and Environmental Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Carlos T Moraes
- Department of Neurology, University of Miami Miller School of Medicine, Miami,FL, USA
| | - Smaranda Willcox
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, USA
| | - Jack D Griffith
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, USA
| | - Steffi Goffart
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Jaakko L O Pohjoismäki
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
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7
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Wu Y, Gong X, Shen J, Zhu K. Postantibiotic leukocyte enhancement-mediated reduction of intracellular bacteria by macrophages. J Adv Res 2024; 58:117-128. [PMID: 37290606 PMCID: PMC10982861 DOI: 10.1016/j.jare.2023.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 05/22/2023] [Accepted: 05/28/2023] [Indexed: 06/10/2023] Open
Abstract
INTRODUCTION Potentiation of the bactericidal activities of leukocytes, including macrophages, upon antibacterial agent administration has been observed for several decades and is summarized as the postantibiotic leukocyte enhancement (PALE) theory. Antibiotics-induced bacterial sensitization to leukocytes is commonly recognized as the mechanism of PALE. However, the degree of sensitization drastically varies with antibiotic classes, and little is known about whether and how the potentiation of leukocytes contributes to PALE. OBJECTIVES In this study, we aim to develop a mechanistic understanding of PALE by investigating the immunoregulation of traditional antibiotics on macrophages. METHODS Interaction models between bacteria and macrophages were constructed to identify the effects of different antibiotics on the bactericidal activities of macrophages. Oxygen consumption rate, expression of oxidases, and antioxidants were then measured to evaluate the effects of fluoroquinolones (FQs) on the oxidative stress of macrophages. Furthermore, the modulation in endoplasmic reticulum stress and inflammation upon antibiotic treatment was detected to analyze the mechanisms. At last, the peritoneal infection model was utilized to verify the PALE in vivo. RESULTS Enrofloxacin significantly reduced the intracellular burden of diverse bacterial pathogens through promoting the accumulation of reactive oxygen species (ROS). The upregulated oxidative response accordingly reprograms the electron transport chain with decreased production of antioxidant enzymes to reduce internalized pathogens. Additionally, enrofloxacin modulated the expression and spatiotemporal localization of myeloperoxidase (MPO) to facilitate ROS accumulation to target invaded bacteria and downregulated inflammatory response to alleviate cellular injury. CONCLUSION Our findings demonstrate the crucial role of leukocytes in PALE, shedding light on the development of new host-directed antibacterial therapies and the design of rational dosage regimens.
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Affiliation(s)
- Yifan Wu
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Xiaoxia Gong
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jianzhong Shen
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Kui Zhu
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
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8
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Vesala L, Basikhina Y, Tuomela T, Nurminen A, Siukola E, Vale PF, Salminen TS. Mitochondrial perturbation in immune cells enhances cell-mediated innate immunity in Drosophila. BMC Biol 2024; 22:60. [PMID: 38475850 DOI: 10.1186/s12915-024-01858-5] [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: 08/31/2023] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Mitochondria participate in various cellular processes including energy metabolism, apoptosis, autophagy, production of reactive oxygen species, stress responses, inflammation and immunity. However, the role of mitochondrial metabolism in immune cells and tissues shaping the innate immune responses are not yet fully understood. We investigated the effects of tissue-specific mitochondrial perturbation on the immune responses at the organismal level. Genes for oxidative phosphorylation (OXPHOS) complexes cI-cV were knocked down in the fruit fly Drosophila melanogaster, targeting the two main immune tissues, the fat body and the immune cells (hemocytes). RESULTS While OXPHOS perturbation in the fat body was detrimental, hemocyte-specific perturbation led to an enhanced immunocompetence. This was accompanied by the formation of melanized hemocyte aggregates (melanotic nodules), a sign of activation of cell-mediated innate immunity. Furthermore, the hemocyte-specific OXPHOS perturbation induced immune activation of hemocytes, resulting in an infection-like hemocyte profile and an enhanced immune response against parasitoid wasp infection. In addition, OXPHOS perturbation in hemocytes resulted in mitochondrial membrane depolarization and upregulation of genes associated with the mitochondrial unfolded protein response. CONCLUSIONS Overall, we show that while the effects of mitochondrial perturbation on immune responses are highly tissue-specific, mild mitochondrial dysfunction can be beneficial in immune-challenged individuals and contributes to variation in infection outcomes among individuals.
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Affiliation(s)
- Laura Vesala
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Department of Molecular Biology, Umeå University, Umeå, Sweden
| | - Yuliya Basikhina
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Tea Tuomela
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Anssi Nurminen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Emilia Siukola
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Pedro F Vale
- Institute of Ecology and Evolution, School of Biological Sciences, University of Edinburgh, Edinburgh, UK
| | - Tiina S Salminen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
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Saha LK, Pommier Y. TOP3A coupling with replication forks and repair of TOP3A cleavage complexes. Cell Cycle 2024; 23:115-130. [PMID: 38341866 PMCID: PMC11037291 DOI: 10.1080/15384101.2024.2314440] [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: 08/25/2023] [Accepted: 01/08/2024] [Indexed: 02/13/2024] Open
Abstract
Humans have two Type IA topoisomerases, topoisomerase IIIα (TOP3A) and topoisomerase IIIβ (TOP3B). In this review, we focus on the role of human TOP3A in DNA replication and highlight the recent progress made in understanding TOP3A in the context of replication. Like other topoisomerases, TOP3A acts by a reversible mechanism of cleavage and rejoining of DNA strands allowing changes in DNA topology. By cleaving and resealing single-stranded DNA, it generates TOP3A-linked single-strand breaks as TOP3A cleavage complexes (TOP3Accs) with a TOP3A molecule covalently bound to the 5´-end of the break. TOP3A is critical for both mitochondrial and for nuclear DNA replication. Here, we discuss the formation and repair of irreversible TOP3Accs, as their presence compromises genome integrity as they form TOP3A DNA-protein crosslinks (TOP3A-DPCs) associated with DNA breaks. We discuss the redundant pathways that repair TOP3A-DPCs, and how their defects are a source of DNA damage leading to neurological diseases and mitochondrial disorders.
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Affiliation(s)
- Liton Kumar Saha
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Yves Pommier
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
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Yadav S, Shah D, Dalai P, Agrawal-Rajput R. The tale of antibiotics beyond antimicrobials: Expanding horizons. Cytokine 2023; 169:156285. [PMID: 37393846 DOI: 10.1016/j.cyto.2023.156285] [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: 02/10/2023] [Revised: 06/02/2023] [Accepted: 06/24/2023] [Indexed: 07/04/2023]
Abstract
Antibiotics had proved to be a godsend for mankind since their discovery. They were once the magical solution to the vexing problem of infection-related deaths. German scientist Paul Ehrlich had termed salvarsan as the silver bullet to treatsyphilis.As time passed, the magic of newly discovered silver bullets got tarnished with raging antibiotic resistance among bacteria and associated side-effects. Still, antibiotics remain the primary line of treatment for bacterial infections. Our understanding of their chemical and biological activities has increased immensely with advancement in the research field. Non-antibacterial effects of antibiotics are studied extensively to optimise their safer, broad-range use. These non-antibacterial effects could be both useful and harmful to us. Various researchers across the globe including our lab are studying the direct/indirect effects and molecular mechanisms behind these non-antibacterial effects of antibiotics. So, it is interesting for us to sum up the available literature. In this review, we have briefed the possible reason behind the non-antibacterial effects of antibiotics, owing to the endosymbiotic origin of host mitochondria. We further discuss the physiological and immunomodulatory effects of antibiotics. We then extend the review to discuss molecular mechanisms behind the plausible use of antibiotics as anticancer agents.
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Affiliation(s)
- Shivani Yadav
- Immunology Lab, Department of Biotechnology and Bioengineering, Indian Institute of Advanced Research, Gandhinagar, India
| | - Dhruvi Shah
- Immunology Lab, Department of Biotechnology and Bioengineering, Indian Institute of Advanced Research, Gandhinagar, India
| | - Parmeswar Dalai
- Immunology Lab, Department of Biotechnology and Bioengineering, Indian Institute of Advanced Research, Gandhinagar, India
| | - Reena Agrawal-Rajput
- Immunology Lab, Department of Biotechnology and Bioengineering, Indian Institute of Advanced Research, Gandhinagar, India.
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11
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Lei Y, VanPortfliet JJ, Chen YF, Bryant JD, Li Y, Fails D, Torres-Odio S, Ragan KB, Deng J, Mohan A, Wang B, Brahms ON, Yates SD, Spencer M, Tong CW, Bosenberg MW, West LC, Shadel GS, Shutt TE, Upton JW, Li P, West AP. Cooperative sensing of mitochondrial DNA by ZBP1 and cGAS promotes cardiotoxicity. Cell 2023; 186:3013-3032.e22. [PMID: 37352855 PMCID: PMC10330843 DOI: 10.1016/j.cell.2023.05.039] [Citation(s) in RCA: 55] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 02/03/2023] [Accepted: 05/26/2023] [Indexed: 06/25/2023]
Abstract
Mitochondrial DNA (mtDNA) is a potent agonist of the innate immune system; however, the exact immunostimulatory features of mtDNA and the kinetics of detection by cytosolic nucleic acid sensors remain poorly defined. Here, we show that mitochondrial genome instability promotes Z-form DNA accumulation. Z-DNA binding protein 1 (ZBP1) stabilizes Z-form mtDNA and nucleates a cytosolic complex containing cGAS, RIPK1, and RIPK3 to sustain STAT1 phosphorylation and type I interferon (IFN-I) signaling. Elevated Z-form mtDNA, ZBP1 expression, and IFN-I signaling are observed in cardiomyocytes after exposure to Doxorubicin, a first-line chemotherapeutic agent that induces frequent cardiotoxicity in cancer patients. Strikingly, mice lacking ZBP1 or IFN-I signaling are protected from Doxorubicin-induced cardiotoxicity. Our findings reveal ZBP1 as a cooperative partner for cGAS that sustains IFN-I responses to mitochondrial genome instability and highlight ZBP1 as a potential target in heart failure and other disorders where mtDNA stress contributes to interferon-related pathology.
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Affiliation(s)
- Yuanjiu Lei
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
| | - Jordyn J VanPortfliet
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
| | - Yi-Fan Chen
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
| | - Joshua D Bryant
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
| | - Ying Li
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | | | - Sylvia Torres-Odio
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
| | - Katherine B Ragan
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX 78712, USA
| | - Jingti Deng
- Departments of Medical Genetics and Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Armaan Mohan
- Departments of Medical Genetics and Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Bing Wang
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Olivia N Brahms
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Shawn D Yates
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | | | - Carl W Tong
- Department of Medical Physiology, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
| | - Marcus W Bosenberg
- Departments of Pathology, Dermatology, and Immunobiology, Yale School of Medicine, New Haven, CT 06520, USA
| | - Laura Ciaccia West
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
| | - Gerald S Shadel
- Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Timothy E Shutt
- Departments of Medical Genetics and Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Jason W Upton
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Pingwei Li
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - A Phillip West
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University, Bryan, TX 77807, USA.
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12
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Alhaj-Suliman SO, Naguib YW, Wafa EI, Saha S, Ebeid K, Meng X, Mohammed HH, Abuo-Rahma GEDA, Yang S, Salem AK. A ciprofloxacin derivative with four mechanisms of action overcomes paclitaxel resistance in p53-mutant and MDR1 gene-expressing type II human endometrial cancer. Biomaterials 2023; 296:122093. [PMID: 36965280 PMCID: PMC10092294 DOI: 10.1016/j.biomaterials.2023.122093] [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: 11/05/2022] [Revised: 03/08/2023] [Accepted: 03/12/2023] [Indexed: 03/19/2023]
Abstract
Dysfunction of the p53 gene and the presence of the MDR1 gene are associated with many malignant tumors including endometrial cancer and are responsible for cancer therapeutic resistance and poor survival. Thus, there is a critical need to devise novel combinatorial therapies with multiple mechanisms of action to overcome drug resistance. Here, we report a new ciprofloxacin derivative (CIP2b) tested either alone or in combination with taxanes against four human endometrial cancer cell lines. In vitro studies revealed that a combination of paclitaxel + CIP2b had synergistic cytotoxic effects against MDR1-expressing type-II human endometrial cancer cells with loss-of-function p53 (Hec50co LOFp53). Enhanced antitumor effects were confirmed by substantial increases in caspase-3 expression, cell population shifts toward the G2/M phase, and reduction of cdc2 phosphorylation. It was found that CIP2b targets multiple pathways including the inhibition of MDR1, topoisomerase I, and topoisomerase II, as well as enhancing the effects of paclitaxel (PTX) on microtubule assembly. In vivo treatment with the combination of PTX + CIP2b also led to significantly increased accumulation of PTX in tumors (compared to CIP2b alone) and reduction in tumor growth. Enhanced in vivo cytotoxic effects were confirmed by histological and immunohistochemical examination of the tumor tissues. Complete blood count and blood biochemistry data confirmed the absence of any apparent off-target toxicity. Thus, combination therapy involving PTX and CIP2b targeted multiple pathways and represents an approach that could result in improved tolerance and efficacy in patients with type-II endometrial cancer harboring the MDR1 gene and p53 mutations.
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Affiliation(s)
- Suhaila O Alhaj-Suliman
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa, IA, 52242, United States
| | - Youssef W Naguib
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa, IA, 52242, United States; Departments of Pharmaceutics and Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Emad I Wafa
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa, IA, 52242, United States
| | - Sanjib Saha
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa, IA, 52242, United States
| | - Kareem Ebeid
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa, IA, 52242, United States; Departments of Pharmaceutics and Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Xiangbing Meng
- Department of Pathology, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, United States
| | - Hamada H Mohammed
- Departments of Pharmaceutics and Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Gamal El-Din A Abuo-Rahma
- Departments of Pharmaceutics and Medicinal Chemistry, Faculty of Pharmacy, Minia University, Minia, 61519, Egypt
| | - Shujie Yang
- Department of Pathology, Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, United States
| | - Aliasger K Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa, IA, 52242, United States.
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13
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D'Achille G, Morroni G. Side effects of antibiotics and perturbations of mitochondria functions. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2023; 377:121-139. [PMID: 37268348 DOI: 10.1016/bs.ircmb.2023.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Antibiotics are one of the greatest discoveries of medicine of the past century. Despite their invaluable contribution to infectious disease, their administration could lead to side effects that in some cases are serious. The toxicity of some antibiotics is in part due to their interaction with mitochondria: these organelles derive from a bacterial ancestor and possess specific translation machinery that shares similarities with the bacterial counterpart. In other cases, the antibiotics could interfere with mitochondrial functions even if their main bacterial targets are not shared with the eukaryotic cells. The purpose of this review is to summarize the effects of antibiotics administration on mitochondrial homeostasis and the opportunity that some of these molecules could represent in cancer treatment. The importance of antimicrobial therapy is unquestionable, but the identification of interaction with eukaryotic cells and in particular with mitochondria is crucial to reduce the toxicity of these drugs and to explore other useful medical applications.
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Affiliation(s)
- Gloria D'Achille
- Microbiology Unit, Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, Ancona, Italy
| | - Gianluca Morroni
- Microbiology Unit, Department of Biomedical Sciences and Public Health, Polytechnic University of Marche, Ancona, Italy.
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14
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Xiang B, Abudupataer M, Liu G, Zhou X, Liu D, Zhu S, Ming Y, Yin X, Yan S, Sun Y, Lai H, Wang C, Li J, Zhu K. Ciprofloxacin exacerbates dysfunction of smooth muscle cells in a microphysiological model of thoracic aortic aneurysm. JCI Insight 2023; 8:161729. [PMID: 36472912 PMCID: PMC9977303 DOI: 10.1172/jci.insight.161729] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Ciprofloxacin use may be associated with adverse aortic events. However, the mechanism underlying the effect of ciprofloxacin on the progression of thoracic aortic aneurysm (TAA) is not well understood. Using an in vitro microphysiological model, we treated human aortic smooth muscle cells (HASMCs) derived from patients with bicuspid aortic valve- or tricuspid aortic valve-associated (BAV- or TAV-associated) TAAs with ciprofloxacin. TAA C57BL/6 mouse models were utilized to verify the effects of ciprofloxacin exposure. In the microphysiological model, real-time PCR, Western blotting, and RNA sequencing showed that ciprofloxacin exposure was associated with a downregulated contractile phenotype, an upregulated inflammatory reaction, and extracellular matrix (ECM) degradation in the normal HASMCs derived from the nondiseased aorta. Ciprofloxacin induced mitochondrial dysfunction in the HASMCs and further increased apoptosis by activating the ERK1/2 and P38 mitogen-activated protein kinase pathways. These adverse effects appeared to be more severe in the HASMCs derived from BAV- and TAV-associated TAAs than in the normal HASMCs when the ciprofloxacin concentration exceeded 100 μg/mL. In the aortic walls of the TAA-induced mice, ECM degradation and apoptosis were aggravated after ciprofloxacin exposure. Therefore, ciprofloxacin should be used with caution in patients with BAV- or TAV-associated TAAs.
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Affiliation(s)
- Bitao Xiang
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Mieradilijiang Abudupataer
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Gang Liu
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiaonan Zhou
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Dingqian Liu
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shichao Zhu
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yang Ming
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiujie Yin
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shiqiang Yan
- Institutes of Biomedical Sciences and Shanghai Key Laboratory of Medical Epigenetics, Shanghai Medical College, and,The State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China
| | - Yongxin Sun
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hao Lai
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chunsheng Wang
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jun Li
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Kai Zhu
- Department of Cardiac Surgery, and,Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
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15
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Bonuccelli G, Sotgia F, Lisanti MP. Identification of natural products and FDA-approved drugs for targeting cancer stem cell (CSC) propagation. Aging (Albany NY) 2022; 14:9466-9483. [PMID: 36455875 PMCID: PMC9792210 DOI: 10.18632/aging.204412] [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: 09/16/2022] [Accepted: 11/17/2022] [Indexed: 12/05/2022]
Abstract
Here, we report the identification of key compounds that effectively inhibit the anchorage-independent growth and propagation of cancer stem cells (CSCs), as determined via screening using MCF7 cells, a human breast adenocarcinoma cell line. More specifically, we employed the mammosphere assay as an experimental format, which involves the generation of 3D spheroid cultures, using low-attachment plates. These positive hit compounds can be divided into 5 categories: 1) dietary supplements (quercetin and glucosamine); 2) FDA-approved drugs (carvedilol and ciprofloxacin); 3) natural products (aloe emodin, aloin, tannic acid, chlorophyllin copper salt, azelaic acid and adipic acid); 4) flavours (citral and limonene); and 5) vitamins (nicotinamide and nicotinic acid). In addition, for the compounds quercetin, glucosamine and carvedilol, we further assessed their metabolic action, using the Seahorse to conduct metabolic flux analysis. Our results indicate that these treatments can affect glycolytic flux and suppress oxidative mitochondrial metabolism (OXPHOS). Therefore, quercetin, glucosamine and carvedilol can reprogram the metabolic phenotype of breast cancer cells. Despite having diverse chemical structures, these compounds all interfere with mitochondrial metabolism. As these compounds halt CSCs propagation, ultimately, they may have therapeutic potential.
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Affiliation(s)
- Gloria Bonuccelli
- Translational Medicine, School of Science, Engineering and Environment, Biomedical Research Centre, University of Salford, Greater Manchester, United Kingdom
| | - Federica Sotgia
- Translational Medicine, School of Science, Engineering and Environment, Biomedical Research Centre, University of Salford, Greater Manchester, United Kingdom
| | - Michael P. Lisanti
- Translational Medicine, School of Science, Engineering and Environment, Biomedical Research Centre, University of Salford, Greater Manchester, United Kingdom
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16
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Bove C, Baldock RA, Champigneulle O, Martin L, Bennett CL. Fluoroquinolones - Old drugs, putative new toxicities. Expert Opin Drug Saf 2022; 21:1365-1378. [DOI: 10.1080/14740338.2022.2147924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Cecilia Bove
- Department of Biological Sciences, York College of Pennsylvania, 441 Country Club Road, York, PA, USA
| | - Robert A. Baldock
- School of Pharmacy and Biomedical Science, University of Portsmouth, St. Michael’s Building, White Swan Road, Portsmouth, PO1 2DT, UK
| | - Oscar Champigneulle
- University of South Carolina Schools of Pharmacy and Engineering and the SmartState Center for Medication Safety and Efficacy, Columbia, SC, USA
| | - Linda Martin
- University of South Carolina Schools of Pharmacy and Engineering and the SmartState Center for Medication Safety and Efficacy, Columbia, SC, USA
| | - Charles L Bennett
- University of South Carolina Schools of Pharmacy and Engineering and the SmartState Center for Medication Safety and Efficacy, Columbia, SC, USA
- Beckman Research Institute (BRI) of City of Hope and the Department of Comparative Medicine and Evidence Based Medicine, City of Hope Comprehensive Cancer Center, Duarte, CA, USA
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17
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Uusküla-Reimand L, Wilson MD. Untangling the roles of TOP2A and TOP2B in transcription and cancer. SCIENCE ADVANCES 2022; 8:eadd4920. [PMID: 36322662 PMCID: PMC9629710 DOI: 10.1126/sciadv.add4920] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 09/12/2022] [Indexed: 06/09/2023]
Abstract
Type II topoisomerases (TOP2) are conserved regulators of chromatin topology that catalyze reversible DNA double-strand breaks (DSBs) and are essential for maintaining genomic integrity in diverse dynamic processes such as transcription, replication, and cell division. While controlled TOP2-mediated DSBs are an elegant solution to topological constraints of DNA, DSBs also contribute to the emergence of chromosomal translocations and mutations that drive cancer. The central importance of TOP2 enzymes as frontline chemotherapeutic targets is well known; however, their precise biological functions and impact in cancer development are still poorly understood. In this review, we provide an updated overview of TOP2A and TOP2B in the regulation of chromatin topology and transcription, and discuss the recent discoveries linking TOP2 activities with cancer pathogenesis.
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Affiliation(s)
- Liis Uusküla-Reimand
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Michael D. Wilson
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
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18
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Menger KE, Chapman J, Díaz-Maldonado H, Khazeem M, Deen D, Erdinc D, Casement JW, Di Leo V, Pyle A, Rodríguez-Luis A, Cowell I, Falkenberg M, Austin C, Nicholls T. Two type I topoisomerases maintain DNA topology in human mitochondria. Nucleic Acids Res 2022; 50:11154-11174. [PMID: 36215039 PMCID: PMC9638942 DOI: 10.1093/nar/gkac857] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/03/2022] [Accepted: 09/26/2022] [Indexed: 11/12/2022] Open
Abstract
Genetic processes require the activity of multiple topoisomerases, essential enzymes that remove topological tension and intermolecular linkages in DNA. We have investigated the subcellular localisation and activity of the six human topoisomerases with a view to understanding the topological maintenance of human mitochondrial DNA. Our results indicate that mitochondria contain two topoisomerases, TOP1MT and TOP3A. Using molecular, genomic and biochemical methods we find that both proteins contribute to mtDNA replication, in addition to the decatenation role of TOP3A, and that TOP1MT is stimulated by mtSSB. Loss of TOP3A or TOP1MT also dysregulates mitochondrial gene expression, and both proteins promote transcription elongation in vitro. We find no evidence for TOP2 localisation to mitochondria, and TOP2B knockout does not affect mtDNA maintenance or expression. Our results suggest a division of labour between TOP3A and TOP1MT in mtDNA topology control that is required for the proper maintenance and expression of human mtDNA.
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Affiliation(s)
- Katja E Menger
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - James Chapman
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Héctor Díaz-Maldonado
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, PO Box 440, 405 30 Gothenburg, Sweden
| | - Mushtaq M Khazeem
- Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Dasha Deen
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Direnis Erdinc
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, PO Box 440, 405 30 Gothenburg, Sweden
| | - John W Casement
- Bioinformatics Support Unit, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Valeria Di Leo
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Angela Pyle
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Alejandro Rodríguez-Luis
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Ian G Cowell
- Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Maria Falkenberg
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, PO Box 440, 405 30 Gothenburg, Sweden
| | - Caroline A Austin
- Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
| | - Thomas J Nicholls
- Wellcome Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
- Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 4HH, UK
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19
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Meiers J, Rox K, Titz A. Lectin-Targeted Prodrugs Activated by Pseudomonas aeruginosa for Self-Destructive Antibiotic Release. J Med Chem 2022; 65:13988-14014. [PMID: 36201248 PMCID: PMC9619409 DOI: 10.1021/acs.jmedchem.2c01214] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Chronic Pseudomonas aeruginosa infections
are characterized by biofilm formation, a major virulence factor of P. aeruginosa and cause of extensive drug resistance.
Fluoroquinolones are effective antibiotics but are linked to severe
side effects. The two extracellular P. aeruginosa-specific lectins LecA and LecB are key structural biofilm components
and can be exploited for targeted drug delivery. In this work, several
fluoroquinolones were conjugated to lectin probes by cleavable peptide
linkers to yield lectin-targeted prodrugs. Mechanistically, these
conjugates therefore remain non-toxic in the systemic distribution
and will be activated to kill only once they have accumulated at the
infection site. The synthesized prodrugs proved stable in the presence
of host blood plasma and liver metabolism but rapidly released the
antibiotic cargo in the presence of P. aeruginosa in a self-destructive manner in vitro. Furthermore, the prodrugs
showed good absorption, distribution, metabolism, and elimination
(ADME) properties and reduced toxicity in vitro, thus establishing
the first lectin-targeted antibiotic prodrugs against P. aeruginosa.
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Affiliation(s)
- Joscha Meiers
- Chemical Biology of Carbohydrates (CBCH), Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, D-66123 Saarbrücken, Germany.,Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany.,Department of Chemistry, Saarland University, D-66123 Saarbrücken, Germany
| | - Katharina Rox
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany.,Chemical Biology (CBIO), Helmholtz Centre for Infection Research (HZI), Helmholtz Centre for Infection Research, D-38124 Braunschweig, Germany
| | - Alexander Titz
- Chemical Biology of Carbohydrates (CBCH), Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, D-66123 Saarbrücken, Germany.,Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany.,Department of Chemistry, Saarland University, D-66123 Saarbrücken, Germany
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20
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The effect of ciprofloxacin on doxorubicin cytotoxic activity in the acquired resistance to doxorubicin in DU145 prostate carcinoma cells. MEDICAL ONCOLOGY (NORTHWOOD, LONDON, ENGLAND) 2022; 39:194. [PMID: 36071289 DOI: 10.1007/s12032-022-01787-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 06/28/2022] [Indexed: 10/14/2022]
Abstract
The present study aimed to assess the influence of ciprofloxacin (CIP) against the doxorubicin (DOX)-resistant androgen-independent prostate cancer DU145 cells. The DOX-resistant DU145 (DU145/DOX20) cells were established by exposing DU145 cells to the increasing concentrations of DOX. The antiproliferative effect of CIP was examined through employing MTT, colony formation, and 3D culture assays. DU145/DOX20 cells exhibited a twofold higher IC50 value for DOX, an increased ABCB1 transporter activity, and some morphological changes accompanied by a decrease in spheroid size, adhesive and migration potential compared to DU145 cells. CIP (5 and 25 µg mL-1) resulted in a higher reduction in the viability of DU145/DOX20 cells than in DU145 cells. DU145/DOX20 cells were more resistant to CIP in 3D culture compared to the 2D one. No spheroid formation was observed for DU145/DOX20 cells treated with DOX and CIP combination. CIP and DOX, alone or in combination, significantly reduced the growth of DU145 spheroids. CIP in combination with 20 nM DOX prevented the colony formation of DU145 cells. The clonogenicity of DU145/DOX20 cells could not be estimated due to their low adhesive potential. CIP alone caused a significant reduction in the migration of DU145 cells and resulted in a more severe decrease in the wound closure ability of DOX-exposed ones. We identified that CIP enhanced DOX sensitivity in DU145 and DU145/DOX20 cells. This study suggested the co-delivery of low concentrations of CIP and DOX may be a promising strategy in treating the DOX-resistant and -sensitive hormone-refractory prostate cancer.
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21
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Chen Z, Chen P, Zheng M, Gao J, Liu D, Wang A, Zheng Q, Leys T, Tai A, Zheng M. Challenges and perspectives of tendon-derived cell therapy for tendinopathy: from bench to bedside. Stem Cell Res Ther 2022; 13:444. [PMID: 36056395 PMCID: PMC9438319 DOI: 10.1186/s13287-022-03113-6] [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: 06/07/2022] [Accepted: 08/03/2022] [Indexed: 11/18/2022] Open
Abstract
Tendon is composed of dense fibrous connective tissues, connecting muscle at the myotendinous junction (MTJ) to bone at the enthesis and allowing mechanical force to transmit from muscle to bone. Tendon diseases occur at different zones of the tendon, including enthesis, MTJ and midsubstance of the tendon, due to a variety of environmental and genetic factors which consequently result in different frequencies and recovery rates. Self-healing properties of tendons are limited, and cell therapeutic approaches in which injured tendon tissues are renewed by cell replenishment are highly sought after. Homologous use of individual’s tendon-derived cells, predominantly differentiated tenocytes and tendon-derived stem cells, is emerging as a treatment for tendinopathy through achieving minimal cell manipulation for clinical use. This is the first review summarizing the progress of tendon-derived cell therapy in clinical use and its challenges due to the structural complexity of tendons, heterogeneous composition of extracellular cell matrix and cells and unsuitable cell sources. Further to that, novel future perspectives to improve therapeutic effect in tendon-derived cell therapy based on current basic knowledge are discussed.
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Affiliation(s)
- Ziming Chen
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia
| | - Peilin Chen
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia
| | - Monica Zheng
- Department of Orthopaedic Surgery, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
| | - Junjie Gao
- Perron Institute for Neurological and Translational Science, Nedlands, WA, 6009, Australia.,Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Shanghai Sixth People's Hospital, Shanghai, 200233, China
| | - Delin Liu
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia.,Perron Institute for Neurological and Translational Science, Nedlands, WA, 6009, Australia
| | - Allan Wang
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia
| | - Qiujian Zheng
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, 510000, Guangdong, China.,Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510000, Guangdong, China
| | - Toby Leys
- Department of Orthopaedic Surgery, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
| | - Andrew Tai
- Perron Institute for Neurological and Translational Science, Nedlands, WA, 6009, Australia.
| | - Minghao Zheng
- Division of Surgery, Centre for Orthopaedic Research, Medical School, The University of Western Australia, Nedlands, WA, 6009, Australia. .,Perron Institute for Neurological and Translational Science, Nedlands, WA, 6009, Australia.
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22
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Antibiotic Therapy and Athletes: Is the Mitochondrial Dysfunction the Real Achilles’ Heel? Sports (Basel) 2022; 10:sports10090131. [PMID: 36136386 PMCID: PMC9504712 DOI: 10.3390/sports10090131] [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: 05/10/2022] [Revised: 07/26/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
It is widely recognized that athletes consume oral antibiotics almost twice as often as observed in the non-sports population in order to reduce as much as possible the period of inactivity due to bacterial diseases. However, increasing evidences have demonstrated the ability of some classes of antibiotics to induce muscle weakness, pain, and a feeling of fatigue upon resuming physical activity conditions that considerably limit the athletic performance of athletes, ascribable to alterations in the biochemical mechanisms underlying normal musculoskeletal activity, such as mitochondrial respiration. For this reason, tailoring a treatment plan for effective antibiotics that limit an athlete’s risk is paramount to their safety and ability to maintain adequate athletic performance. The present review illustrates and critically analyzes the evidence on the use of antibiotics in sports, deepening the molecular mechanisms underlying the onset and development of muscle–tendon alterations in athletes as well as delineating the pharmacological strategies aimed at counteracting such adverse events.
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23
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Hangas A, Kekäläinen NJ, Potter A, Michell C, Aho KJ, Rutanen C, Spelbrink JN, Pohjoismäki JL, Goffart S. Top3α is the replicative topoisomerase in mitochondrial DNA replication. Nucleic Acids Res 2022; 50:8733-8748. [PMID: 35904803 PMCID: PMC9410902 DOI: 10.1093/nar/gkac660] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/07/2022] [Accepted: 07/22/2022] [Indexed: 11/18/2022] Open
Abstract
Mitochondrial DNA has been investigated for nearly fifty years, but many aspects of the maintenance of this essential small genome remain unknown. Like any genome, mammalian mitochondrial DNA requires the function of topoisomerases to counter and regulate the topological tension arising during replication, transcription, segregation, and repair. However, the functions of the different mitochondrial topoisomerases are poorly understood. Here, we investigate the role of Topoisomerase 3α (Top3α) in mtDNA replication and transcription, providing evidence that this enzyme, previously reported to act in mtDNA segregation, also participates in mtDNA replication fork progression. Top3α knockdown caused replication fork stalling, increased mtDNA catenation and decreased mtDNA levels. Overexpression in contrast induced abundant double-strand breaks around the replication origin OH and abortion of early replication, while at the same time improving the resolution of mtDNA replication termination intermediates. Both Top3α knockdown and overexpression affected mitochondrial RNA transcription, leading to a decrease in steady-state levels of mitochondrial transcripts. Together, our results indicate that the mitochondrial isoform of Top3α is not only involved in mtDNA segregation, as reported previously, but also supports the progression of the replication fork. Mitochondrial Top3α is also influencing the progression of transcription, with its absence affecting downstream transcript levels.
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Affiliation(s)
- Anu Hangas
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Nina J Kekäläinen
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Alisa Potter
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland.,Radboud Center for Mitochondrial Medicine, Department of Paediatrics, Radboudumc, Nijmegen, The Netherlands
| | - Craig Michell
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Kauko J Aho
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Chiara Rutanen
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Johannes N Spelbrink
- Radboud Center for Mitochondrial Medicine, Department of Paediatrics, Radboudumc, Nijmegen, The Netherlands
| | - Jaakko L Pohjoismäki
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
| | - Steffi Goffart
- Department of Environmental and Biological Sciences, University of Eastern Finland, PO Box 111, 80101 Joensuu, Finland
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24
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Roy A, Kandettu A, Ray S, Chakrabarty S. Mitochondrial DNA replication and repair defects: Clinical phenotypes and therapeutic interventions. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2022; 1863:148554. [PMID: 35341749 DOI: 10.1016/j.bbabio.2022.148554] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 03/06/2022] [Accepted: 03/16/2022] [Indexed: 12/15/2022]
Abstract
Mitochondria is a unique cellular organelle involved in multiple cellular processes and is critical for maintaining cellular homeostasis. This semi-autonomous organelle contains its circular genome - mtDNA (mitochondrial DNA), that undergoes continuous cycles of replication and repair to maintain the mitochondrial genome integrity. The majority of the mitochondrial genes, including mitochondrial replisome and repair genes, are nuclear-encoded. Although the repair machinery of mitochondria is quite efficient, the mitochondrial genome is highly susceptible to oxidative damage and other types of exogenous and endogenous agent-induced DNA damage, due to the absence of protective histones and their proximity to the main ROS production sites. Mutations in replication and repair genes of mitochondria can result in mtDNA depletion and deletions subsequently leading to mitochondrial genome instability. The combined action of mutations and deletions can result in compromised mitochondrial genome maintenance and lead to various mitochondrial disorders. Here, we review the mechanism of mitochondrial DNA replication and repair process, key proteins involved, and their altered function in mitochondrial disorders. The focus of this review will be on the key genes of mitochondrial DNA replication and repair machinery and the clinical phenotypes associated with mutations in these genes.
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Affiliation(s)
- Abhipsa Roy
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Amoolya Kandettu
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Swagat Ray
- Department of Life Sciences, School of Life and Environmental Sciences, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - Sanjiban Chakrabarty
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
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25
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Grot D, Wasiak K, Tyszkowski J, Stoczynska-Fidelus E, Ochedalski TP, Rieske P. Regeneration difficulties in patients with FQAD can limit the use of iPSc-based cell therapy. Stem Cell Res Ther 2022; 13:210. [PMID: 35598007 PMCID: PMC9123688 DOI: 10.1186/s13287-022-02886-0] [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: 06/11/2021] [Accepted: 05/03/2022] [Indexed: 11/26/2022] Open
Abstract
Etiopathogenesis of fluoroquinolone-associated disability (FQAD) syndrome is not fully understood, yet research could progress by utilizing induced pluripotent stem cells (iPSc) from people with this syndrome. Similarly, iPSc, or rather their derivatives, could be used in their therapy, not only for FQAD but also for other disorders in which generated autologous iPSc and their derivatives might be helpful. Urine was collected from ten donors with FQAD, and reprogramming of these cells was conducted with the use of Epi5TM Episomal iPSC Reprogramming Kit. IPSc were generated in one out of ten person’s urine cells. While urinary cells are considered the easiest mature cells to be reprogrammed into iPSc, the urinary cells from six consecutive donors quickly became senescent. Stable urine primary cell cultures could not be obtained from the three remaining donors. Repeated attempts to reprogram epithelial cells were not successful. During parallel studies conducted for healthy donors, reprogramming success was achieved in six out of ten cases. These data may suggest serious limitations in the regeneration system of individuals with FQAD. Consequently, it indicates that therapy with autologous iPSc derivatives may face serious difficulties in their case, still, the first iPSc cell line from a person with FQAD was established.
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Affiliation(s)
- Dagmara Grot
- Department of Tumor Biology, Medical University of Lodz, Zeligowskiego 7/9, 90-752, Lodz, Poland. .,Department of Research and Development, Personather Ltd., Inwestycyjna 7, 95-050, Konstantynow Lodzki, Poland.
| | - Katarzyna Wasiak
- Department of Research and Development, Personather Ltd., Inwestycyjna 7, 95-050, Konstantynow Lodzki, Poland
| | - Jerzy Tyszkowski
- Fluoroquinolone Toxicity Study NFP, 6444 W. Belmont Ave. Unit B, Chicago, IL, 60634, USA
| | - Ewelina Stoczynska-Fidelus
- Department of Research and Development, Personather Ltd., Inwestycyjna 7, 95-050, Konstantynow Lodzki, Poland.,Department of Molecular Biology, Medical University of Lodz, Zeligowskiego 7/9, 90-752, Lodz, Poland
| | - Tomasz P Ochedalski
- Department of Comparative Endocrinology, Medical University of Lodz, Zeligowskiego 7/9, 90-752, Lodz, Poland
| | - Piotr Rieske
- Department of Tumor Biology, Medical University of Lodz, Zeligowskiego 7/9, 90-752, Lodz, Poland.,Department of Research and Development, Personather Ltd., Inwestycyjna 7, 95-050, Konstantynow Lodzki, Poland
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26
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Salimiaghdam N, Singh L, Singh MK, Chwa M, Atilano SR, Mohtashami Z, Nesburn AB, Kuppermann BD, Lu SY, Kenney MC. Impacts of Bacteriostatic and Bactericidal Antibiotics on the Mitochondria of the Age-Related Macular Degeneration Cybrid Cell Lines. Biomolecules 2022; 12:675. [PMID: 35625603 PMCID: PMC9138285 DOI: 10.3390/biom12050675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/29/2022] [Accepted: 05/03/2022] [Indexed: 12/07/2022] Open
Abstract
We assessed the potential negative effects of bacteriostatic and bactericidal antibiotics on the AMD cybrid cell lines (K, U and J haplogroups). AMD cybrid cells were created and cultured in 96-well plates and treated with tetracycline (TETRA) and ciprofloxacin (CPFX) for 24 h. Reactive oxygen species (ROS) levels, mitochondrial membrane potential (ΔψM), cellular metabolism and ratio of apoptotic cells were measured using H2DCFDA, JC1, MTT and flow cytometry assays, respectively. Expression of genes of antioxidant enzymes, and pro-inflammatory and pro-apoptotic pathways were evaluated by quantitative real-time PCR (qRT-PCR). Higher ROS levels were found in U haplogroup cybrids when treated with CPFX 60 µg/mL concentrations, lower ΔψM of all haplogroups by CPFX 120 µg/mL, diminished cellular metabolism in all cybrids with CPFX 120 µg/mL, and higher ratio of dead cells in K and J cybrids. CPFX 120 µg/mL induced overexpression of IL-33, CASP-3 and CASP-9 in all cybrids, upregulation of TGF-β1 and SOD2 in U and J cybrids, respectively, along with decreased expression of IL-6 in J cybrids. TETRA 120 µg/mL induced decreased ROS levels in U and J cybrids, increased cellular metabolism of treated U cybrids, higher ratio of dead cells in K and J cybrids and declined ΔψM via all TETRA concentrations in all haplogroups. TETRA 120 µg/mL caused upregulation of IL-6 and CASP-3 genes in all cybrids, higher CASP-7 gene expression in K and U cybrids and downregulation of the SOD3 gene in K and U cybrids. Clinically relevant dosages of ciprofloxacin and tetracycline have potential adverse impacts on AMD cybrids possessing K, J and U mtDNA haplogroups in vitro.
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Affiliation(s)
- Nasim Salimiaghdam
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
| | - Lata Singh
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
| | - Mithalesh K. Singh
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
| | - Marilyn Chwa
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
| | - Shari R. Atilano
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
| | - Zahra Mohtashami
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
| | - Anthony B. Nesburn
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
- Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Baruch D. Kuppermann
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
| | - Stephanie Y. Lu
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
| | - M. Cristina Kenney
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA 92697, USA; (N.S.); (L.S.); (M.K.S.); (M.C.); (S.R.A.); (Z.M.); (A.B.N.); (B.D.K.); (S.Y.L.)
- Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA 92697, USA
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27
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Abstract
Significance: The small, multicopy mitochondrial genome (mitochondrial DNA [mtDNA]) is essential for efficient energy production, as alterations in its coding information or a decrease in its copy number disrupt mitochondrial ATP synthesis. However, the mitochondrial replication machinery encounters numerous challenges that may limit its ability to duplicate this important genome and that jeopardize mtDNA stability, including various lesions in the DNA template, topological stress, and an insufficient nucleotide supply. Recent Advances: An ever-growing array of DNA repair or maintenance factors are being reported to localize to the mitochondria. We review current knowledge regarding the mitochondrial factors that may contribute to the tolerance or repair of various types of changes in the mitochondrial genome, such as base damage, incorporated ribonucleotides, and strand breaks. We also discuss the newly discovered link between mtDNA instability and activation of the innate immune response. Critical Issues: By which mechanisms do mitochondria respond to challenges that threaten mtDNA maintenance? What types of mtDNA damage are repaired, and when are the affected molecules degraded instead? And, finally, which forms of mtDNA instability trigger an immune response, and how? Future Directions: Further work is required to understand the contribution of the DNA repair and damage-tolerance factors present in the mitochondrial compartment, as well as the balance between mtDNA repair and degradation. Finally, efforts to understand the events underlying mtDNA release into the cytosol are warranted. Pursuing these and many related avenues can improve our understanding of what goes wrong in mitochondrial disease. Antioxid. Redox Signal. 36, 885-905.
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Affiliation(s)
- Gustavo Carvalho
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Bruno Marçal Repolês
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Isabela Mendes
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Paulina H Wanrooij
- Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
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28
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Prescription Drugs and Mitochondrial Metabolism. Biosci Rep 2022; 42:231068. [PMID: 35315490 PMCID: PMC9016406 DOI: 10.1042/bsr20211813] [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: 01/02/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 11/17/2022] Open
Abstract
Mitochondria are central to the physiology and survival of nearly all eukaryotic cells and house diverse metabolic processes including oxidative phosphorylation, reactive oxygen species buffering, metabolite synthesis/exchange, and Ca2+ sequestration. Mitochondria are phenotypically heterogeneous and this variation is essential to the complexity of physiological function among cells, tissues, and organ systems. As a consequence of mitochondrial integration with so many physiological processes, small molecules that modulate mitochondrial metabolism induce complex systemic effects. In the case of many common prescribed drugs, these interactions may contribute to drug therapeutic mechanisms, induce adverse drug reactions, or both. The purpose of this article is to review historical and recent advances in the understanding of the effects of prescription drugs on mitochondrial metabolism. Specific 'modes' of xenobiotic-mitochondria interactions are discussed to provide a set of qualitative models that aid in conceptualizing how the mitochondrial energy transduction system may be affected. Findings of recent in vitro high-throughput screening studies are reviewed, and a few candidate drug classes are chosen for additional brief discussion (i.e. antihyperglycemics, antidepressants, antibiotics, and antihyperlipidemics). Finally, recent improvements in pharmacokinetic models that aid in quantifying systemic effects of drug-mitochondria interactions are briefly considered.
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29
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Boukouris AE, Zhang Y, Saleme B, Kinnaird A, Zhao YY, Liu Y, Zervopoulos SD, Das SK, Mittal RD, Haromy A, Lorenzana-Carrillo MA, Krysler AR, Cromwell CR, Hubbard BP, Sutendra G, Michelakis ED. A reversible metabolic stress-sensitive regulation of CRMP2A orchestrates EMT/stemness and increases metastatic potential in cancer. Cell Rep 2022; 38:110511. [PMID: 35294884 DOI: 10.1016/j.celrep.2022.110511] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 11/09/2021] [Accepted: 02/17/2022] [Indexed: 12/31/2022] Open
Abstract
An epithelial-to-mesenchymal transition (EMT) phenotype with cancer stem cell-like properties is a critical feature of aggressive/metastatic tumors, but the mechanism(s) that promote it and its relation to metabolic stress remain unknown. Here we show that Collapsin Response Mediator Protein 2A (CRMP2A) is unexpectedly and reversibly induced in cancer cells in response to multiple metabolic stresses, including low glucose and hypoxia, and inhibits EMT/stemness. Loss of CRMP2A, when metabolic stress decreases (e.g., around blood vessels in vivo) or by gene deletion, induces extensive microtubule remodeling, increased glutamine utilization toward pyrimidine synthesis, and an EMT/stemness phenotype with increased migration, chemoresistance, tumor initiation capacity/growth, and metastatic potential. In a cohort of 27 prostate cancer patients with biopsies from primary tumors and distant metastases, CRMP2A expression decreases in the metastatic versus primary tumors. CRMP2A is an endogenous molecular brake on cancer EMT/stemness and its loss increases the aggressiveness and metastatic potential of tumors.
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Affiliation(s)
| | - Yongneng Zhang
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Bruno Saleme
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Adam Kinnaird
- Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Yuan Yuan Zhao
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Yongsheng Liu
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | | | - Subhash K Das
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Rohan D Mittal
- Department of Pathology, University of Alberta, Edmonton, AB, Canada
| | - Alois Haromy
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | | | - Amanda R Krysler
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
| | | | - Basil P Hubbard
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
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30
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Badawy S, Yang Y, Liu Y, Marawan MA, Ares I, Martinez MA, Martínez-Larrañaga MR, Wang X, Anadón A, Martínez M. Toxicity induced by ciprofloxacin and enrofloxacin: oxidative stress and metabolism. Crit Rev Toxicol 2022; 51:754-787. [PMID: 35274591 DOI: 10.1080/10408444.2021.2024496] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ciprofloxacin (CIP) (human use) and enrofloxacin (ENR) (veterinary use) are synthetic anti-infectious medications that belong to the second generation of fluoroquinolones. They have a wide antimicrobial spectrum and strong bactericidal effects at very low concentrations via enzymatic inhibition of DNA gyrase and topoisomerase IV, which are required for DNA replication. They also have high bioavailability, rapid absorption with favorable pharmacokinetics and excellent tissue penetration, including cerebral spinal fluid. These features have made them the most applied antibiotics in both human and veterinary medicine. ENR is marketed exclusively for animal medicine and has been widely used as a therapeutic veterinary antibiotic, resulting in its residue in edible tissues and aquatic environments, as well as the development of resistance and toxicity. Estimation of the risks to humans due to antimicrobial resistance produced by CIP and ENR is important and of great interest. Moreover, in rare cases due to their overdose and/or prolonged administration, the development of CIP and ENR toxicity may occur. The toxicity of these fluoroquinolones antimicrobials is mainly related to reactive oxygen species (ROS) and oxidative stress (OS) generation, besides metabolism-related toxicity. Therefore, CIP is restricted in pregnant and lactating women, pediatrics and elderly similarly ENR do in the veterinary field. This review manuscript aims to identify the toxicity induced by ROS and OS as a common sequel of CIP and ENR. Furthermore, their metabolism and the role of metabolizing enzymes were reported.
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Affiliation(s)
- Sara Badawy
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, China.,Pathology Department of Animal Medicine, Faculty of Veterinary Medicine, Benha University, Benha, Egypt
| | - YaQin Yang
- MAO Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, China
| | - Yanan Liu
- MAO Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, China
| | - Marawan A Marawan
- The State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China.,Infectious Diseases, Animal Medicine Department, Faculty of Veterinary Medicine, Benha University, Benha, Egypt
| | - Irma Ares
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid (UCM), and Research Institute Hospital 12 de Octubre (i + 12), Madrid, Spain
| | - María-Aránzazu Martinez
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid (UCM), and Research Institute Hospital 12 de Octubre (i + 12), Madrid, Spain
| | - María-Rosa Martínez-Larrañaga
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid (UCM), and Research Institute Hospital 12 de Octubre (i + 12), Madrid, Spain
| | - Xu Wang
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, China.,MAO Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, China
| | - Arturo Anadón
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid (UCM), and Research Institute Hospital 12 de Octubre (i + 12), Madrid, Spain
| | - Marta Martínez
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Universidad Complutense de Madrid (UCM), and Research Institute Hospital 12 de Octubre (i + 12), Madrid, Spain
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31
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Sass G, Scherpe L, Martinez M, Marsh JJ, Stevens DA. Metrics of Antifungal Effects of Ciprofloxacin on Aspergillus fumigatus Planktonic Growth and Biofilm Metabolism; Effects of Iron and Siderophores. J Fungi (Basel) 2022; 8:jof8030240. [PMID: 35330242 PMCID: PMC8950033 DOI: 10.3390/jof8030240] [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: 12/10/2021] [Revised: 02/23/2022] [Accepted: 02/24/2022] [Indexed: 01/27/2023] Open
Abstract
Pseudomonas aeruginosa and Aspergillus fumigatus frequently coexist in the airways of immunocompromised patients or individuals with cystic fibrosis. Ciprofloxacin (CIP) is a synthetic quinolone antibiotic commonly used to treat bacterial infections, such as those produced by Pseudomonas aeruginosa. CIP binds iron, and it is unclear what effect this complex would have on the mycobiome. The effects of CIP on Aspergillus were dependent on the iron levels present, and on the presence of Aspergillus siderophores. We found that CIP alone stimulated wildtype planktonic growth, but not biofilm metabolism. At high concentrations, CIP antagonized a profungal effect of iron on wildtype Aspergillus metabolism, presumably owing to iron chelation. CIP interfered with the metabolism and growth of an Aspergillus siderophore mutant, with the effect on metabolism being antagonized by iron. CIP acted synergistically with iron on the growth of the mutant, and, to a lesser extent, the wildtype. In summary, CIP can increase fungal growth or affect fungal metabolism, depending on the local iron concentration and available siderophores. Therefore, high local CIP concentrations during treatment of Pseudomonas–Aspergillus co-infections may increase the fungal burden.
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Affiliation(s)
- Gabriele Sass
- California Institute for Medical Research, San Jose, CA 95128, USA; (L.S.); (M.M.); (J.J.M.); (D.A.S.)
- Correspondence: ; Tel.: +1-408-998-4557
| | - Lynn Scherpe
- California Institute for Medical Research, San Jose, CA 95128, USA; (L.S.); (M.M.); (J.J.M.); (D.A.S.)
- Faculty of Science and Engineering, Maastricht University, 6229 EN Maastricht, The Netherlands
| | - Marife Martinez
- California Institute for Medical Research, San Jose, CA 95128, USA; (L.S.); (M.M.); (J.J.M.); (D.A.S.)
| | - Julianne J. Marsh
- California Institute for Medical Research, San Jose, CA 95128, USA; (L.S.); (M.M.); (J.J.M.); (D.A.S.)
| | - David A. Stevens
- California Institute for Medical Research, San Jose, CA 95128, USA; (L.S.); (M.M.); (J.J.M.); (D.A.S.)
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
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The Effect of Fatty Acids on Ciprofloxacin Cytotoxic Activity in Prostate Cancer Cell Lines. Does Lipid Component Enhance Anticancer Ciprofloxacin Potential? Cancers (Basel) 2022; 14:cancers14020409. [PMID: 35053570 PMCID: PMC8773529 DOI: 10.3390/cancers14020409] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/06/2022] [Accepted: 01/12/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Most prostate cancers are initially hormone-dependent but later gain a hormone-independent phenotype associated with changes in lipid metabolism, including enhanced absorption of extracellular fatty acids. The aim of our study was to assess the effect of ciprofloxacin conjugates with fatty acids on different type of prostate cancer (LNCaP and DU-145) and normal (RWPE-1) cells, as well as their influence on cell lipid metabolism by proteomic analysis. All tested conjugates exhibited cytotoxic potential, the most powerful for oleic, elaidic and docosahexaenoic acids. The hormone-independent DU145 line was more sensitive to derivatives than the hormone-dependent LNCaP line. These results are consistent with previously observed pronounced cytotoxic effect of conjugates on a hormone-insensitive PC3 line. Tested derivatives decreased intensity of proteins involved in prostate cancer lipid metabolism. Our findings confirm the involvement of lipid metabolism in prostate carcinogenesis indicating a target for fatty acids as drug carriers. Abstract Purpose: To assess cytotoxic effect of ciprofloxacin conjugates with fatty acids on prostate cancer cells (LNCaP and DU-145) with different hormone sensitivity, based on previous promising results from the PC3 cells. Methods: Cytotoxicity were estimated using MTT and LDH tests, whereas its mechanisms were estimated by apoptosis and IL-6 assays. The intensity of proteins involved in lipid metabolism was determined using ML-CS assay. Results: The hormone insensitive DU-145 cells were more vulnerable than the hormone sensitive LNCaP cells. The IC50 values for oleic (4), elaidic (5) and docosahexaenoic acid (8) conjugates were 20.2 µM, 17.8 µM and 16.5 µM, respectively, in DU-145 cells, whereas in LNCaP cells IC50 exceeded 20 µM. The strong conjugate cytotoxicity was confirmed in the LDH test, the highest (70.8%) for compound (5) and 64.2% for compound (8) in DU-145 cells. This effect was weaker for LNCaP cells (around 60%). The cytotoxic effect of unconjugated ciprofloxacin and fatty acids was weaker. The early apoptosis was predominant in LNCaP while in DU-145 cells both early and late apoptosis was induced. The tested conjugates decreased IL-6 release in both cancer cell lines by almost 50%. Proteomic analysis indicated influence of the ciprofloxacin conjugates on lipid metabolic proteins in prostatic cancer. Conclusion: Our findings suggested the cytotoxic potential of ciprofloxacin conjugates with reduction in proteins involved in prostate cancer progress.
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Salimiaghdam N, Singh L, Schneider K, Chwa M, Atilano SR, Nalbandian A, Limb GA, Kenney MC. Effects of fluoroquinolones and tetracyclines on mitochondria of human retinal MIO-M1 cells. Exp Eye Res 2022; 214:108857. [PMID: 34856207 PMCID: PMC9949354 DOI: 10.1016/j.exer.2021.108857] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 10/25/2021] [Accepted: 11/17/2021] [Indexed: 01/26/2023]
Abstract
Our goal was to explore the detrimental impacts of ciprofloxacin (CPFX) and tetracycline (TETRA) on human retinal Müller (MIO-M1) cells in vitro. Cells were exposed to 30, 60 and 120 μg/ml of CPFX and TETRA. The cellular metabolism was measured with the MTT assay. The JC-1 and CM-H2DCFDA assays were used to evaluate the levels of mitochondrial membrane potential (MMP) and ROS (reactive oxygen species), respectively. Mitochondrial DNA (mtDNA) copy number, along with gene expression levels associated with apoptotic (BAX, BCL2-L13, BCL2, CASP-3 and CASP-9), inflammatory (IL-6, IL-1β, TGF-α, TGF-β1 and TGF-β2) and antioxidant pathways (SOD2, SOD3, GPX3 and NOX4) were analyzed via Quantitative Real-Time PCR (qRT-PCR). Bioenergetic profiles were measured using the Seahorse® XF Flux Analyzer. Cells exposed 24 h to 120 μg/ml TETRA demonstrated higher cellular metabolism compared to vehicle-treated cells. At each time points, (i) all TETRA concentrations reduced MMP levels and (ii) ROS levels were reduced by TETRA 120 μg/ml treatment. TETRA caused (i) higher expression of CASP-3, CASP-9, TGF-α, IL-1B, GPX3 and SOD3 but (ii) decreased levels of TGF-B2 and SOD2. ATP production and spare respiratory capacity declined with TETRA treatment. Cellular metabolism was reduced with CPFX 120 μg/ml in all cultures and 60 μg/ml after 72 h. The CPFX 120 μg/ml reduced MMP in all cultures and ROS levels (72 h). CPFX treatment (i) increased expression of CASP-3, CASP-9, and BCL2-L13, (ii) elevated the basal oxygen consumption rate, and (iii) lowered the mtDNA copy numbers and expression levels of TGF-B2, IL-6 and IL-1B compared to vehicle-control cells. We conclude that clinically relevant dosages of bactericidal and bacteriostatic antibiotics can have negative effects on the cellular metabolism and mitochondrial membrane potential of the retinal MIO-M1 cells in vitro. It is noteworthy to mention that apoptotic and inflammatory pathways in exposed cells were affected significantly This is the first study showing the negative impact of fluoroquinolones and tetracyclines on mitochondrial behavior of human retinal MIO-M1 cells.
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Affiliation(s)
- Nasim Salimiaghdam
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - Lata Singh
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA; Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Kevin Schneider
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - Marilyn Chwa
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - Shari R Atilano
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - Angele Nalbandian
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA
| | - G Astrid Limb
- Institute of Ophthalmology, University College, London, United Kingdom
| | - M Cristina Kenney
- Department of Ophthalmology, Gavin Herbert Eye Institute, University of California Irvine, Irvine, CA, 92697, USA; Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, 92697, USA.
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OUP accepted manuscript. J Antimicrob Chemother 2022; 77:1218-1227. [DOI: 10.1093/jac/dkac025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 01/05/2022] [Indexed: 11/14/2022] Open
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Tímermans A, Vázquez R, Otero F, Gosálvez J, Johnston S, Fernández JL. Antibiotic toxicity on human spermatozoa assessed using the sperm DNA fragmentation dynamic assay. Andrologia 2021; 54:e14328. [PMID: 34837416 DOI: 10.1111/and.14328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/18/2021] [Accepted: 11/12/2021] [Indexed: 02/06/2023] Open
Abstract
Sperm DNA fragmentation (SDF) dynamic assays were piloted on 4 fresh ejaculates to examine the possible sperm toxicity of three common antibiotics, ciprofloxacin, doxycycline and ampicillin, incubated at a concentration estimated to be reached in semen in vivo, and 100×, for 24 h. SDF was assessed in terms of single-strand DNA breaks (SSBs) and double-strand DNA breaks (DSBs). Low and high concentrations of ciprofloxacin and high concentration of doxycycline significantly increased the SDF rate, due to sperm containing SSBs. Ampicillin did not affect SDF dynamics at any dose. Based on these results, the effect of antibiotics on the global-SDF dynamics was further examined in 21 ejaculates assessed at 0, 4 and 6 h. Ciprofloxacin increased the rate of SDF at the low concentration in 17 from 21 subjects; the high concentration resulted in a stronger effect in all individuals. A significant increase in the rate of SDF in 17 ejaculates was also noted when spermatozoa were incubated with the high concentration of doxycycline. The dynamic SDF assay is a rapid and sensitive tool to evidence sperm toxicity. Ciprofloxacin should be avoided when it is necessary to preserve sperm quality for reproductive purposes and as additive in semen diluents.
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Affiliation(s)
- Ana Tímermans
- Genetics Unit, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain.,Laboratory of Molecular Genetics and Radiobiology, Centro Oncológico de Galicia, A Coruña, Spain
| | | | - Fátima Otero
- Genetics Unit, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain.,Laboratory of Molecular Genetics and Radiobiology, Centro Oncológico de Galicia, A Coruña, Spain
| | - Jaime Gosálvez
- Genetics Unit, Facultad de Biología, Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, Madrid, Spain
| | - Stephen Johnston
- School of Agriculture and Food Sciences, The University of Queensland, Gatton, Australia
| | - José Luis Fernández
- Genetics Unit, INIBIC-Complexo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain.,Laboratory of Molecular Genetics and Radiobiology, Centro Oncológico de Galicia, A Coruña, Spain
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Trapped topoisomerase-DNA covalent complexes in the mitochondria and their role in human diseases. Mitochondrion 2021; 60:234-244. [PMID: 34500116 DOI: 10.1016/j.mito.2021.08.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/24/2021] [Accepted: 08/27/2021] [Indexed: 11/22/2022]
Abstract
Topoisomerases regulate DNA topology, organization of the intracellular DNA, the transmission of genetic materials, and gene expressions. Other than the nuclear genome, mitochondria also harbor the small, circular DNA (mtDNA) that encodes a critical subset of proteins for the production of cellular ATP; however, mitochondria are solely dependent on the nucleus for all the mitochondrial proteins necessary for mtDNA replication, repair, and maintenance. Mitochondrial genome compiles topological stress from bidirectional transcription and replication, therefore imports four nuclear encoded topoisomerases (Top1mt, Top2α, Top2β, and Top3α) in the mitochondria to relax mtDNA supercoiling generated during these processes. Trapping of topoisomerase on DNA results in the formation of protein-linked DNA adducts (PDAs), which are widely exploited by topoisomerase-targeting anticancer drugs. Intriguingly mtDNA is potentially exposed to DNA damage that has been attributed to a variety of human diseases, including neurodegeneration, cancer, and premature aging. In this review, we focus on the role of different topoisomerases in the mitochondria and our current understanding of the mitochondrial DNA damage through trapped protein-DNA complexes, and the progress in the molecular mechanisms of the repair for trapped topoisomerase covalent complexes (Topcc). Finally, we have discussed how the pathological DNA lesions that cause mtDNA damage,trigger mitochondrial fission and mitophagy, which serve as quality control events for clearing damaged mtDNA.
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Menger KE, Rodríguez-Luis A, Chapman J, Nicholls TJ. Controlling the topology of mammalian mitochondrial DNA. Open Biol 2021; 11:210168. [PMID: 34547213 PMCID: PMC8455175 DOI: 10.1098/rsob.210168] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The genome of mitochondria, called mtDNA, is a small circular DNA molecule present at thousands of copies per human cell. MtDNA is packaged into nucleoprotein complexes called nucleoids, and the density of mtDNA packaging affects mitochondrial gene expression. Genetic processes such as transcription, DNA replication and DNA packaging alter DNA topology, and these topological problems are solved by a family of enzymes called topoisomerases. Within mitochondria, topoisomerases are involved firstly in the regulation of mtDNA supercoiling and secondly in disentangling interlinked mtDNA molecules following mtDNA replication. The loss of mitochondrial topoisomerase activity leads to defects in mitochondrial function, and variants in the dual-localized type IA topoisomerase TOP3A have also been reported to cause human mitochondrial disease. We review the current knowledge on processes that alter mtDNA topology, how mtDNA topology is modulated by the action of topoisomerases, and the consequences of altered mtDNA topology for mitochondrial function and human health.
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Affiliation(s)
- Katja E. Menger
- Wellcome Centre for Mitochondrial Research, Biosciences Institute, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Alejandro Rodríguez-Luis
- Wellcome Centre for Mitochondrial Research, Biosciences Institute, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - James Chapman
- Wellcome Centre for Mitochondrial Research, Biosciences Institute, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Thomas J. Nicholls
- Wellcome Centre for Mitochondrial Research, Biosciences Institute, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
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Battaglia S, De Santis S, Rutigliano M, Sallustio F, Picerno A, Frassanito MA, Schaefer I, Vacca A, Moschetta A, Seibel P, Battaglia M, Villani G. Uridine and pyruvate protect T cells' proliferative capacity from mitochondrial toxic antibiotics: a clinical pilot study. Sci Rep 2021; 11:12841. [PMID: 34145306 PMCID: PMC8213784 DOI: 10.1038/s41598-021-91559-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/21/2021] [Indexed: 01/01/2023] Open
Abstract
Antibiotics that inhibit bacterial protein or nucleic acid synthesis and function can exert an off-target action on mitochondria (mitotoxic antibiotics), making actively dividing mammalian cells dependent on uridine and pyruvate supplementation. Based on this rationale, we carried out, for the first time, a randomized pilot study in 55 patients with asymptomatic bacteriuria or positive sperm culture, each treated with a single mitotoxic antibiotic with or without oral supplementation of uridine + pyruvate (Uripyr, Mitobiotix, Italy). The in vivo and ex vivo data show a a 3.4-fold higher value in the differential (before and after the antibiotic treatment) lymphocytes count and a 3.7-fold increase in the percentage of dividing T cells, respectively, in the Uripyr vs the control group. Our findings lay the groundwork to enhance the synergy between antibiotics and the immune system in order to optimize the administration protocols and widen the application potentials of antibiotic therapies as well as to re-evaluate old "forgotten" molecules to fight bacterial infections in the antibiotics resistance era.
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Affiliation(s)
- Stefano Battaglia
- Department of Interdisciplinary Medicine, "Aldo Moro" University of Bari, 70124, Bari, Italy.,Department of Emergency and Organ Transplants, "Aldo Moro" University of Bari, 70124, Bari, Italy
| | - Stefania De Santis
- Department of Interdisciplinary Medicine, "Aldo Moro" University of Bari, 70124, Bari, Italy.,Department of Pharmacy-Drug Science, "Aldo Moro" University of Bari, 70126, Bari, Italy
| | - Monica Rutigliano
- Department of Emergency and Organ Transplants, "Aldo Moro" University of Bari, 70124, Bari, Italy
| | - Fabio Sallustio
- Department of Interdisciplinary Medicine, "Aldo Moro" University of Bari, 70124, Bari, Italy
| | - Angela Picerno
- Department of Emergency and Organ Transplants, "Aldo Moro" University of Bari, 70124, Bari, Italy
| | - Maria Antonia Frassanito
- Department of Biomedical Sciences and Human Oncology, "Aldo Moro" University of Bari, 70124, Bari, Italy
| | - Ingo Schaefer
- Molecular Cell Therapy, BBZ, Medical Faculty, University of Leipzig, 04103, Leipzig, Germany
| | - Angelo Vacca
- Department of Biomedical Sciences and Human Oncology, "Aldo Moro" University of Bari, 70124, Bari, Italy
| | - Antonio Moschetta
- Department of Interdisciplinary Medicine, "Aldo Moro" University of Bari, 70124, Bari, Italy
| | - Peter Seibel
- Molecular Cell Therapy, BBZ, Medical Faculty, University of Leipzig, 04103, Leipzig, Germany
| | - Michele Battaglia
- Department of Emergency and Organ Transplants, "Aldo Moro" University of Bari, 70124, Bari, Italy.
| | - Gaetano Villani
- Department of Basic Medical Sciences, Neuroscience and Sense Organs, "Aldo Moro" University of Bari, 70124, Bari, Italy.
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Knoll KE, Lindeque Z, Adeniji AA, Oosthuizen CB, Lall N, Loots DT. Elucidating the Antimycobacterial Mechanism of Action of Ciprofloxacin Using Metabolomics. Microorganisms 2021; 9:microorganisms9061158. [PMID: 34071153 PMCID: PMC8228629 DOI: 10.3390/microorganisms9061158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/12/2021] [Accepted: 05/18/2021] [Indexed: 12/21/2022] Open
Abstract
In the interest of developing more effective and safer anti-tuberculosis drugs, we used a GCxGC-TOF-MS metabolomics research approach to investigate and compare the metabolic profiles of Mtb in the presence and absence of ciprofloxacin. The metabolites that best describe the differences between the compared groups were identified as markers characterizing the changes induced by ciprofloxacin. Malic acid was ranked as the most significantly altered metabolite marker induced by ciprofloxacin, indicative of an inhibition of the tricarboxylic acid (TCA) and glyoxylate cycle of Mtb. The altered fatty acid, myo-inositol, and triacylglycerol metabolism seen in this group supports previous observations of ciprofloxacin action on the Mtb cell wall. Furthermore, the altered pentose phosphate intermediates, glycerol metabolism markers, glucose accumulation, as well as the reduction in the glucogenic amino acids specifically, indicate a flux toward DNA (as well as cell wall) repair, also supporting previous findings of DNA damage caused by ciprofloxacin. This study further provides insights useful for designing network whole-system strategies for the identification of possible modes of action of various drugs and possibly adaptations by Mtb resulting in resistance.
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Affiliation(s)
- Kirsten E. Knoll
- Department of Human Metabolomics, North-West University, Private Bag x6001, Box 269, Potchefstroom 2531, South Africa; (K.E.K.); (Z.L.); (A.A.A.)
| | - Zander Lindeque
- Department of Human Metabolomics, North-West University, Private Bag x6001, Box 269, Potchefstroom 2531, South Africa; (K.E.K.); (Z.L.); (A.A.A.)
| | - Adetomiwa A. Adeniji
- Department of Human Metabolomics, North-West University, Private Bag x6001, Box 269, Potchefstroom 2531, South Africa; (K.E.K.); (Z.L.); (A.A.A.)
| | - Carel B. Oosthuizen
- Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria 0002, South Africa; (C.B.O.); (N.L.)
| | - Namrita Lall
- Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria 0002, South Africa; (C.B.O.); (N.L.)
- School of Natural Resources, University of Missouri, Columbia, MO 65211, USA
| | - Du Toit Loots
- Department of Human Metabolomics, North-West University, Private Bag x6001, Box 269, Potchefstroom 2531, South Africa; (K.E.K.); (Z.L.); (A.A.A.)
- Correspondence: ; Tel.: +27-(0)18-299-1818
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Kuula LSM, Backman JT, Blom ML. Health service use and costs associated with fluoroquinolone-related tendon injuries. Pharmacol Res Perspect 2021; 9:e00796. [PMID: 34086409 PMCID: PMC8177061 DOI: 10.1002/prp2.796] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 04/27/2021] [Indexed: 12/15/2022] Open
Abstract
The aim of this study was to assess costs and health service use associated with tendon injuries after the use of fluoroquinolone antimicrobials in Finland during 2002-2012. This retrospective observational study included data from the Finnish Pharmaceutical Insurance Pool's pharmaceutical injury claims. In total, 145 compensated claimants aged ≥18 years presenting tendon injuries after the use of fluoroquinolones (FQs) were included in the study. Outcomes of interest were the number of outpatient visits to primary, secondary, tertiary, and private healthcare services, hospital days, rehabilitation and their costs. Regression models were used to analyze the impact of patient characteristics on hospital days, as well as the relationship between patient characteristics and tendon ruptures. Direct costs of a tendon injury averaged 14,800€ and indirect costs were estimated to be 9,077€ for employed claimants. Fifty-one percent of the claimants were hospitalized, with an average duration of 21 days. Hospitalization was the costliest form of health service use with an average of 9,915€ per hospital episode. Hospital days and direct costs increased with the severity of the injury. Tendon ruptures, in particular bilateral ruptures, required substantially more hospital days and their direct costs were significantly higher than those of uncomplicated tendinitis. Concurrent use of oral corticosteroids and increasing age were associated with a higher likelihood of tendon ruptures. Although rare, FQ-related tendon injuries can result in considerable costs and health service use. Medical staff should remain vigilant when prescribing FQs, especially in groups at increased risk for tendon injuries.
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Affiliation(s)
| | - Janne T. Backman
- Individualized Drug Therapy Research ProgramFaculty of MedicineDepartment of Clinical PharmacologyUniversity of HelsinkiUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Marja L. Blom
- Faculty of PharmacyUniversity of HelsinkiHelsinkiFinland
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Simultaneous electrochemical detection of ciprofloxacin and Ag(I) in a silver nanoparticle dissolution: Application to ecotoxicological acute studies. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105832] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Eswaramoorthy R, Hailekiros H, Kedir F, Endale M. In silico Molecular Docking, DFT Analysis and ADMET Studies of Carbazole Alkaloid and Coumarins from Roots of Clausena anisata: A Potent Inhibitor for Quorum Sensing. Adv Appl Bioinform Chem 2021; 14:13-24. [PMID: 33584098 PMCID: PMC7875078 DOI: 10.2147/aabc.s290912] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/03/2021] [Indexed: 01/04/2023] Open
Abstract
Introduction In modern drug design, in silico methods are largely used to understand drug-receptor interactions and quantum chemical properties. In the present study, a computational de novo design approach was used to confirm mode of binding for antibacterial activity, elucidating quantum chemical properties and ADMET-drug-likeness of carbazole alkaloid (1) and three coumarins (2-4) isolated from roots of Clausena anisata. Methods Docking studies were performed with DNA-Gyrase (6F86) and LasR binding domain (2UV0) employing a flexible ligand docking approach using AutoDock Vina. SwissADME prediction and toxicological predictions were performed by ADMET. The optimized structures and molecular electrostatic potential surface of the isolated compounds were predicted by DFT analysis using B3LYP/6-31G basis levels. Results and Discussion The docking results revealed that compound 3 showed better docking scores against both DNA gyrase B and LasR binding domain compared with ciprofloxacin with potential as an inhibitor of bacterial DNA gyrase and quorum sensing LasR binding domain. The SwissADME prediction results showed that all the isolated compounds (1-4) satisfy Lipinski's rule of five with zero violations. Toxicological prediction results suggested that all compounds and ciprofloxacin are non-hepatotoxic, non-carcinogenic, non-irritant, immunogenic, and non-cytotoxic. The DFT analysis results revealed that compound 3 has large electronegativity (χeV), global softness (σ eV-1), global electrophilicity (ωeV), and mutagenicity value closer to ciprofloxacin (with LD50 value of 480 mg/kg) suggesting better bioactivity and chemical reactivity with considerable intra-molecular charge transfer between electron-donor to electron-acceptor groups. Conclusion Overall, compound 3 may serve as a lead molecule that could be developed into a potent E. coli DNA gyrase B inhibitor and efficient inhibitor for quorum sensing auto-inducer LasR binding domain of Pseudomonas aeruginosa.
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Affiliation(s)
- Rajalakshmanan Eswaramoorthy
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, Adama, 1888, Ethiopia
| | - Hadgu Hailekiros
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, Adama, 1888, Ethiopia
| | - Fedlu Kedir
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, Adama, 1888, Ethiopia
| | - Milkyas Endale
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, Adama, 1888, Ethiopia
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Dalhoff A. Selective toxicity of antibacterial agents-still a valid concept or do we miss chances and ignore risks? Infection 2021; 49:29-56. [PMID: 33367978 PMCID: PMC7851017 DOI: 10.1007/s15010-020-01536-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 10/04/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Selective toxicity antibacteribiotics is considered to be due to interactions with targets either being unique to bacteria or being characterized by a dichotomy between pro- and eukaryotic pathways with high affinities of agents to bacterial- rather than eukaryotic targets. However, the theory of selective toxicity oversimplifies the complex modes of action of antibiotics in pro- and eukaryotes. METHODS AND OBJECTIVE This review summarizes data describing multiple modes of action of antibiotics in eukaryotes. RESULTS Aminoglycosides, macrolides, oxazolidinones, chloramphenicol, clindamycin, tetracyclines, glycylcyclines, fluoroquinolones, rifampicin, bedaquillin, ß-lactams inhibited mitochondrial translation either due to binding to mitosomes, inhibition of mitochondrial RNA-polymerase-, topoisomerase 2ß-, ATP-synthesis, transporter activities. Oxazolidinones, tetracyclines, vancomycin, ß-lactams, bacitracin, isoniazid, nitroxoline inhibited matrix-metalloproteinases (MMP) due to chelation with zinc and calcium, whereas fluoroquinols fluoroquinolones and chloramphenicol chelated with these cations, too, but increased MMP activities. MMP-inhibition supported clinical efficacies of ß-lactams and daptomycin in skin-infections, and of macrolides, tetracyclines in respiratory-diseases. Chelation may have contributed to neuroprotection by ß-lactams and fluoroquinolones. Aminoglycosides, macrolides, chloramphenicol, oxazolidins oxazolidinones, tetracyclines caused read-through of premature stop codons. Several additional targets for antibiotics in human cells have been identified like interaction of fluoroquinolones with DNA damage repair in eukaryotes, or inhibition of mucin overproduction by oxazolidinones. CONCLUSION The effects of antibiotics on eukaryotes are due to identical mechanisms as their antibacterial activities because of structural and functional homologies of pro- and eukaryotic targets, so that the effects of antibiotics on mammals are integral parts of their overall mechanisms of action.
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Affiliation(s)
- Axel Dalhoff
- Christian-Albrechts-University of Kiel, Institue for Infection Medicine, Brunswiker Str. 4, D-24105, Kiel, Germany.
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Kergaravat SV, Hernández SR, Gagneten AM. Second-, third- and fourth-generation quinolones: Ecotoxicity effects on Daphnia and Ceriodaphnia species. CHEMOSPHERE 2021; 262:127823. [PMID: 32777613 DOI: 10.1016/j.chemosphere.2020.127823] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
We conducted the first complete toxicological study of six quinolones, including acute, chronic, and recovery assays on Daphnia magna and Ceriodaphnia dubia. The assayed quinolones were second-generation ciprofloxacin (CIP), norfloxacin (NOR), enrofloxacin (ENR), and marbofloxacin (MAR); third-generation levofloxacin (LEV), and fourth-generation moxifloxacin (MOX). The median lethal concentrations (LC50) obtained for both species by acute ecotoxicity assay ranged from 14 to 73 mg L-1 and from 3 to 23 mg L-1 at 48 and 72 h, respectively; while the median effective concentration (EC50) ranged from 4 to 28 mg L-1 in the chronic ecotoxicity assays. C. dubia surviving the chronic exposure assay was monitored in recovery assays free of quinolones. A fluorometric method was used to confirm that there was no significant loss of quinolone concentrations during the acute assays. We also used this method to show that quinolone concentrations fell below 80% of the nominal value after 9-11 d if exposure solutions were not renewed. This study on the ecotoxicological and chemical behavior of quinolones in two cladoceran species fills a data gap about how these emerging contaminants affect nontarget aquatic organisms and how long they persist in the environment.
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Affiliation(s)
- Silvina V Kergaravat
- Laboratorio de Ecotoxicología, Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina; Laboratorio de Sensores y Biosensores, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), CCT, Santa Fe, Argentina.
| | - Silvia R Hernández
- Laboratorio de Sensores y Biosensores, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina
| | - Ana María Gagneten
- Laboratorio de Ecotoxicología, Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina
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Gözen I, Dommersnes P. Biological lipid nanotubes and their potential role in evolution. THE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS 2020; 229:2843-2862. [PMID: 33224439 PMCID: PMC7666715 DOI: 10.1140/epjst/e2020-000130-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
The membrane of cells and organelles are highly deformable fluid interfaces, and can take on a multitude of shapes. One distinctive and particularly interesting property of biological membranes is their ability to from long and uniform nanotubes. These nanoconduits are surprisingly omnipresent in all domains of life, from archaea, bacteria, to plants and mammals. Some of these tubes have been known for a century, while others were only recently discovered. Their designations are different in different branches of biology, e.g. they are called stromule in plants and tunneling nanotubes in mammals. The mechanical transformation of flat membranes to tubes involves typically a combination of membrane anchoring and external forces, leading to a pulling action that results in very rapid membrane nanotube formation - micrometer long tubes can form in a matter of seconds. Their radius is set by a mechanical balance of tension and bending forces. There also exists a large class of membrane nanotubes that form due to curvature inducing molecules. It seems plausible that nanotube formation and functionality in plants and animals may have been inherited from their bacterial ancestors during endosymbiotic evolution. Here we attempt to connect observations of nanotubes in different branches of biology, and outline their similarities and differences with the aim of providing a perspective on their joint functions and evolutionary origin.
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Affiliation(s)
- Irep Gözen
- Centre for Molecular Medicine Norway, Faculty of Medicine, University of Oslo, Oslo, 0318 Norway
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, 0315 Norway
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, 412 96 Sweden
| | - Paul Dommersnes
- Department of Physics, Norwegian University of Science and Technology, Hoegskoleringen 5, 7491 Trondheim, Norway
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Clarelli F, Palmer A, Singh B, Storflor M, Lauksund S, Cohen T, Abel S, Abel zur Wiesch P. Drug-target binding quantitatively predicts optimal antibiotic dose levels in quinolones. PLoS Comput Biol 2020; 16:e1008106. [PMID: 32797079 PMCID: PMC7449454 DOI: 10.1371/journal.pcbi.1008106] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 08/26/2020] [Accepted: 06/30/2020] [Indexed: 11/19/2022] Open
Abstract
Antibiotic resistance is rising and we urgently need to gain a better quantitative understanding of how antibiotics act, which in turn would also speed up the development of new antibiotics. Here, we describe a computational model (COMBAT-COmputational Model of Bacterial Antibiotic Target-binding) that can quantitatively predict antibiotic dose-response relationships. Our goal is dual: We address a fundamental biological question and investigate how drug-target binding shapes antibiotic action. We also create a tool that can predict antibiotic efficacy a priori. COMBAT requires measurable biochemical parameters of drug-target interaction and can be directly fitted to time-kill curves. As a proof-of-concept, we first investigate the utility of COMBAT with antibiotics belonging to the widely used quinolone class. COMBAT can predict antibiotic efficacy in clinical isolates for quinolones from drug affinity (R2>0.9). To further challenge our approach, we also do the reverse: estimate the magnitude of changes in drug-target binding based on antibiotic dose-response curves. We overexpress target molecules to infer changes in antibiotic-target binding from changes in antimicrobial efficacy of ciprofloxacin with 92-94% accuracy. To test the generality of our approach, we use the beta-lactam ampicillin to predict target molecule occupancy at MIC from antimicrobial action with 90% accuracy. Finally, we apply COMBAT to predict antibiotic concentrations that can select for resistance due to novel resistance mutations. Using ciprofloxacin and ampicillin as well defined test cases, our work demonstrates that drug-target binding is a major predictor of bacterial responses to antibiotics. This is surprising because antibiotic action involves many additional effects downstream of drug-target binding. In addition, COMBAT provides a framework to inform optimal antibiotic dose levels that maximize efficacy and minimize the rise of resistant mutants.
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Affiliation(s)
- Fabrizio Clarelli
- Department of Pharmacy, Faculty of Health Sciences, UiT—The Arctic University of Norway, Tromsø, Norway
- Department of Biology, Eberly College of Science, The Pennsylvania State University, University Park, PA, United States of America
- Center for Infectious Disease Dynamics, Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States of America
| | - Adam Palmer
- Department of Pharmacology, Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | - Bhupender Singh
- Department of Pharmacy, Faculty of Health Sciences, UiT—The Arctic University of Norway, Tromsø, Norway
| | - Merete Storflor
- Department of Pharmacy, Faculty of Health Sciences, UiT—The Arctic University of Norway, Tromsø, Norway
- Department of Veterinary and Biomedical Sciences, College of Agricultural Sciences, The Pennsylvania State University, PA, United States of America
| | - Silje Lauksund
- Department of Pharmacy, Faculty of Health Sciences, UiT—The Arctic University of Norway, Tromsø, Norway
| | - Ted Cohen
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, United States of America
| | - Sören Abel
- Department of Pharmacy, Faculty of Health Sciences, UiT—The Arctic University of Norway, Tromsø, Norway
- Center for Infectious Disease Dynamics, Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States of America
- Department of Veterinary and Biomedical Sciences, College of Agricultural Sciences, The Pennsylvania State University, PA, United States of America
- Centre for Molecular Medicine Norway, Nordic EMBL Partnership, Oslo, Norway
| | - Pia Abel zur Wiesch
- Department of Pharmacy, Faculty of Health Sciences, UiT—The Arctic University of Norway, Tromsø, Norway
- Department of Biology, Eberly College of Science, The Pennsylvania State University, University Park, PA, United States of America
- Center for Infectious Disease Dynamics, Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, United States of America
- Centre for Molecular Medicine Norway, Nordic EMBL Partnership, Oslo, Norway
- * E-mail:
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Peravali R, Acharya S, Raza SH, Pattanaik D, Randall MB. Dermatomyositis Developed After Exposure to Epstein-Barr Virus Infection and Antibiotics Use. Am J Med Sci 2020; 360:402-405. [PMID: 32591093 DOI: 10.1016/j.amjms.2020.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/30/2020] [Accepted: 05/07/2020] [Indexed: 11/19/2022]
Abstract
Dermatomyositis is an inflammatory disorder involving muscle and skin. Similar to many other autoimmune diseases, environmental factors appear to trigger the onset of disease in some cases. Many drugs have been reported to be associated with dermatomyositis, and rarely infections have been described as potential triggering agents. Here we are describing a case of dermatomyositis that developed after doxycycline and levofloxacin use, who also had recent Epstein-Barr virus infection. Dermatomyositis associated with doxycycline or levofloxacin use has not yet been described in the literature, while reports of dermatomyositis after Epstein-Barr virus infection have been rare and limited to juvenile dermatomyositis or in association with cancer. It is important for clinicians to be aware of this rare association so that the diagnosis and treatment can be exercised promptly.
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Affiliation(s)
- Rahul Peravali
- University of Tennessee Medical School, Memphis, Tennessee
| | - Saurav Acharya
- Division of Rheumatology, University of Tennessee Health Science Center, Memphis, Tennessee.
| | - Syed Hasan Raza
- Division of Rheumatology, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Debendra Pattanaik
- Division of Rheumatology, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Milton Barry Randall
- Department of Dermatology, University of Tennessee Health Science Center, Memphis, Tennessee
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Fan M, Chen S, Weng Y, Li X, Jiang Y, Wang X, Bie M, An L, Zhang M, Chen B, Huang G, Wu J, Zhu M, Shi Q. Ciprofloxacin promotes polarization of CD86+CD206‑ macrophages to suppress liver cancer. Oncol Rep 2020; 44:91-102. [PMID: 32377744 PMCID: PMC7251753 DOI: 10.3892/or.2020.7602] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/31/2020] [Indexed: 12/24/2022] Open
Abstract
Gut microbiota can promote tumor development by producing toxic metabolites and inhibiting the function of immune cells. Previous studies have demonstrated that gut microbiota can reach the liver through the circulation and promote the occurrence of liver cancer. Ciprofloxacin, an effective broad‑spectrum antimicrobial agent, can promote cell apoptosis and regulate the function of immune cells. As an important part of the tumor microenvironment, macrophages play an important role in tumor regulation. The present study demonstrated that the treatment of macrophages with ciprofloxacin was able to promote the production of interleukin‑1β, tumor necrosis factor‑α and the polarization of CD86+CD206‑ macrophages, while inhibiting the polarization of CD86‑CD206+ macrophages. This transformation may help macrophages promote tumor cell apoptosis, inhibit tumor cell proliferation, reduce metastasis and downregulate the phosphoinositide 3‑kinase/AKT signaling pathway in liver cancer cell lines. In vivo experiments demonstrated that macrophages treated with ciprofloxacin inhibited the growth of subcutaneous implanted tumors in nude mice. In conclusion, the findings of the present study indicated that ciprofloxacin may inhibit liver cancer by upregulating the expression of CD86+CD206‑ macrophages. This study further revealed the biological mechanism underlying the potential value of ciprofloxacin in antitumor therapy and provided new targets for the treatment of liver cancer.
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Affiliation(s)
- Mengtian Fan
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Sicheng Chen
- Department of Cardiothoracic Surgery, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yaguang Weng
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Xian Li
- Department of Pathology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yingjiu Jiang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Xiaowen Wang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Mengjun Bie
- Department of Cardiothoracic Surgery, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Liqin An
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Menghao Zhang
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Bin Chen
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Gaigai Huang
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Jinghong Wu
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Mengying Zhu
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Qiong Shi
- Ministry of Education Key Laboratory of Diagnostic Medicine, School of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
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Raza MF, Wang Y, Cai Z, Bai S, Yao Z, Awan UA, Zhang Z, Zheng W, Zhang H. Gut microbiota promotes host resistance to low-temperature stress by stimulating its arginine and proline metabolism pathway in adult Bactrocera dorsalis. PLoS Pathog 2020; 16:e1008441. [PMID: 32294136 PMCID: PMC7185725 DOI: 10.1371/journal.ppat.1008441] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 04/27/2020] [Accepted: 02/28/2020] [Indexed: 02/02/2023] Open
Abstract
Gut symbiotic bacteria have a substantial impact on host physiology and ecology. However, the contribution of gut microbes to host fitness during long-term low-temperature stress is still unclear. This study examined the role of gut microbiota in host low-temperature stress resistance at molecular and biochemical levels in the oriental fruit fly Bactrocera dorsalis. The results showed that after the gut bacteria of flies were removed via antibiotic treatment, the median survival time was significantly decreased to approximately 68% of that in conventional flies following exposure to a temperature stress of 10°C. Furthermore, we found that Klebsiella michiganensis BD177 is a key symbiotic bacterium, whose recolonization in antibiotic treated (ABX) flies significantly extended the median survival time to 160% of that in the ABX control, and restored their lifespan to the level of conventional flies. Notably, the relative levels of proline and arginine metabolites were significantly downregulated by 34- and 10-fold, respectively, in ABX flies compared with those in the hemolymph of conventional flies after exposure to a temperature stress of 10°C whereas recolonization of ABX flies by K. michiganensis BD177 significantly upregulated the levels of proline and arginine by 13- and 10- fold, respectively, compared with those found in the hemolymph of ABX flies. qPCR analysis also confirmed that K. michiganensis-recolonized flies significantly stimulated the expression of transcripts from the arginine and proline metabolism pathway compared with the ABX controls, and RNAi mediated silencing of two key genes Pro-C and ASS significantly reduced the survival time of conventional flies, postexposure low-temperature stress. We show that microinjection of L-arginine and L-proline into ABX flies significantly increased their survival time following exposure to temperature stress of 10°C. Transmission electron microscopy (TEM) analysis further revealed that low-temperature stress caused severe destruction in cristae structures and thus resulted in abnormal circular shapes of mitochondria in ABX flies gut, while the recolonization of live K. michiganensis helped the ABX flies to maintain mitochondrial functionality to a normal status, which is important for the arginine and proline induction. Our results suggest that gut microbiota plays a vital role in promoting the host resistance to low-temperature stress in B. dorsalis by stimulating its arginine and proline metabolism pathway.
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Affiliation(s)
- Muhammad Fahim Raza
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Yichen Wang
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Zhaohui Cai
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Shuai Bai
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Zhichao Yao
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Umar Anwar Awan
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Zhenyu Zhang
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Weiwei Zheng
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
| | - Hongyu Zhang
- State Key Laboratory of Agricultural Microbiology, Key Laboratory of Horticultural Plant Biology (MOE), China-Australia Joint Research Centre for Horticultural and Urban Pests, Institute of Urban and Horticultural Entomology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People’s Republic of China
- * E-mail:
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