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Kumar V, Deshpande N, Parekh M, Wong R, Ashraf S, Zahid M, Hui H, Miall A, Kimpton S, Price MO, Price FW, Gonzalez FJ, Rogan E, Jurkunas UV. Estrogen genotoxicity causes preferential development of Fuchs endothelial corneal dystrophy in females. Redox Biol 2024; 69:102986. [PMID: 38091879 PMCID: PMC10716776 DOI: 10.1016/j.redox.2023.102986] [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: 11/15/2023] [Revised: 12/01/2023] [Accepted: 12/03/2023] [Indexed: 01/23/2024] Open
Abstract
Fuchs endothelial corneal dystrophy (FECD) is a genetically complex, age-related, female-predominant disorder characterized by loss of post-mitotic corneal endothelial cells (CEnCs). Ultraviolet-A (UVA) light has been shown to recapitulate the morphological and molecular changes seen in FECD to a greater extent in females than males, by triggering CYP1B1 upregulation in females. Herein, we investigated the mechanism of greater CEnC susceptibility to UVA in females by studying estrogen metabolism in response to UVA in the cornea. Loss of NAD(P)H quinone oxidoreductase 1 (NQO1) resulted in increased production of estrogen metabolites and mitochondrial-DNA adducts, with a higher CEnC loss in Nqo1-/- female compared to wild-type male and female mice. The CYP1B1 inhibitors, trans-2,3',4,5'-tetramethoxystilbene (TMS) and berberine, rescued CEnC loss. Injection of wild-type male mice with estrogen (E2; 17β-estradiol) increased CEnC loss, followed by increased production of estrogen metabolites and mitochondrial DNA (mtDNA) damage, not seen in E2-treated Cyp1b1-/-male mice. This study demonstrates that the endo-degenerative phenotype is driven by estrogen metabolite-dependent CEnC loss that is exacerbated in the absence of NQO1; thus, explaining the mechanism accounting for the higher incidence of FECD in females. The mitigation of estrogen-adduct production by CYP1B1 inhibitors could serve as a novel therapeutic strategy for FECD.
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Affiliation(s)
- Varun Kumar
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA
| | - Neha Deshpande
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA
| | - Mohit Parekh
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA
| | - Raymond Wong
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA
| | - Shazia Ashraf
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA
| | - Muhammad Zahid
- Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE, 68198-4388, USA
| | - Hanna Hui
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA
| | - Annie Miall
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA
| | - Sylvie Kimpton
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA
| | - Marianne O Price
- Price Vision Group and Cornea Research Foundation of America, Indianapolis, IN, USA
| | - Francis W Price
- Price Vision Group and Cornea Research Foundation of America, Indianapolis, IN, USA
| | - Frank J Gonzalez
- Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Eleanor Rogan
- Department of Environmental, Agricultural and Occupational Health, College of Public Health, University of Nebraska Medical Center, Omaha, NE, 68198-4388, USA
| | - Ula V Jurkunas
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA, 02115, USA.
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Akhmetova DA, Kozlov VV, Gulyaeva LF. New Insight into the Role of AhR in Lung Carcinogenesis. BIOCHEMISTRY. BIOKHIMIIA 2022; 87:1219-1225. [PMID: 36509717 DOI: 10.1134/s0006297922110013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Lung cancer (LC), one of the most common malignant neoplasms, is the leading cause of high cancer mortality worldwide. Smoking is a risk factor for almost all histological types of LC. Benzo[a]pyrene (BaP), one of the main constituents of tobacco smoke, can cause cancer. It has been established that its toxic effects can develop in the following ways: genotoxic (formation of adducts with DNA) and non-genotoxic or epigenetic. The latter is less known, although it is known that BaP activates aryl hydrocarbon receptor (AhR), which regulate transcription of many target genes, including microRNAs, which can lead to initiation and enhancement of the malignant cell transformation. Recent studies are evaluating the role of AhR in the regulation of immune checkpoints, as cigarette smoke and BaP induce the AhR-regulated expression of PD-L1 (CD274) in lung epithelial cells in vitro and in vivo. In addition, kynurenine (a metabolite of tryptophan) has been found to stimulate the PD-1 (CD279) expression in cytotoxic T cells by activating AhR. Recent studies confirm great importance of AhR expressed in malignant cells for suppression of antitumor immunity. All this makes us rethink the role of AhR in lung carcinogenesis and investigate the mechanisms of its activation by exogenous and endogenous ligands. This review highlights the current understanding of the functional features of AhR and its role in the LC pathogenesis.
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Affiliation(s)
- Dinara A Akhmetova
- Novosibirsk National Research State University, Novosibirsk, 630090, Russia.
| | - Vadim V Kozlov
- Research Institute of Molecular Biology and Biophysics, Federal Research Center for Fundamental and Translational Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630117, Russia.,Department of Thoracic Oncology #3, Novosibirsk Regional Clinical Oncology Center, Novosibirsk, 630108, Russia
| | - Ludmila F Gulyaeva
- Novosibirsk National Research State University, Novosibirsk, 630090, Russia.,Research Institute of Molecular Biology and Biophysics, Federal Research Center for Fundamental and Translational Medicine, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630117, Russia
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Kannan A, Perpetua N, Dolan M, Fasullo M. CYP1B1 converts procarcinogens into genotoxins in Saccharomyces cerevisiae. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2022; 874-875:503440. [PMID: 35151423 DOI: 10.1016/j.mrgentox.2022.503440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
CYP1B1 activates many chemical carcinogens into potent genotoxins, and allelic variants are risk factors in lung, breast, and prostate cancer. However, few eukaryotic genetic instability endpoints have been directly measured for CYP1B1-activated metabolites. In this study, we expressed human CYP1B1 in yeast strains that measure DNA damage-associated toxicity and frequencies of chromosomal translocations. DNA damage-associated toxicity was measured in a rad4 rad51 strain, defective in both DNA excision and recombinational repair. Frequencies of chromosomal translocations were measured in diploid yeast strains containing two his3 fragments. These strains were exposed to benzo[a]pyrene-7,8-dihydrodiol (BaP-DHD), aflatoxin B1 (AFB1), and the heterocyclic aromatic amines, 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) and 2-amino-3-methylimidazo[4,5-f]quinoline (IQ). We observed that AFB1, BaP-DHD, IQ, and MeIQx conferred toxicity in the DNA repair mutant expressing CYP1B1. Translocation frequencies increased eight-fold and three-fold after exposure to 50 μM AFB1 and 33 μM BaP-DHD respectively. A DNA damage response was observed after AFB1 exposure, as measured by the induction of the small subunit of ribonucleotide reductase, Rnr3. While CYP1B1-mediated activation of BaP-DHD and heterocyclic aromatic amines was expected, activation of AFB1 to become a potent recombinagen was not expected. These studies demonstrate that chromosomal rearrangement is a useful genotoxic endpoint for CYP1B1-mediated carcinogen activation.
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Affiliation(s)
- Akaash Kannan
- SUNY Polytechnic Institute, 257 Fuller Road, Albany, NY 12205, United States
| | - Nicholas Perpetua
- SUNY Polytechnic Institute, 257 Fuller Road, Albany, NY 12205, United States
| | - Michael Dolan
- SUNY Polytechnic Institute, 257 Fuller Road, Albany, NY 12205, United States
| | - Michael Fasullo
- SUNY Polytechnic Institute, 257 Fuller Road, Albany, NY 12205, United States.
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Narsani AK, Waryah AM, Rafiq M, Shaikh H, Naqvi SHA, Kumar R, Kumar P. Mutational analysis of CYP1B1 (rs56010818) variant in primary open angle glaucoma (POAG) affected patients of Pakistan. Saudi J Biol Sci 2022; 29:96-101. [PMID: 35002398 PMCID: PMC8716894 DOI: 10.1016/j.sjbs.2021.08.066] [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: 06/23/2021] [Revised: 08/02/2021] [Accepted: 08/19/2021] [Indexed: 11/24/2022] Open
Abstract
Background Primary open angle glaucoma (POAG) occurs due to the discrepancies in the angle of anterior chamber characterized by the alterations in intraocular pressure, optic nerves head changes and central loss of visual field. In molecular research, CYP1B1 mutations modulates an integral role in association with glaucoma. Current study was undertaken to reveal the homozygous and heterozygous patterns of CYP1B1 c.1169 G > A variant (rs56010818) in POAG patients of Pakistan. Methods After consent, total n = 88 POAG patients undergone through standard ophthalmological investigations before their recruitment in this study. The blood samples were utilized for DNA isolation. The genotyping of CYP1B1 c.1169 G > A variant was carried out by Sanger sequencing. The mutational patterns and its association with clinical variables were demonstrated by statistical and bioinformatic tools. Results It was evident that the frequencies of heterozygous G/A and homozygous mutants A/A genotypes were higher in males (36.5%, 7.7%) than females (30.6%, 2.8%) of POAG population. Furthermore, the juvenile patients exhibit high manifestation of carrier genotype (66.6%) in comparison to adult patients (31.7%). The results also indicated the significant relationship of intraocular pressure with homozygous mutant A/A genotype of CYP1B1 variant in POAG patients (p < 0.05). Conclusions Our study provided the mutational data of CYP1B1 R390H variant and the patterns of homozygosity and heterozygosity along with clinical associations. Overall, this study revealed the genetic predisposition of CYP1B1 c.1169 G > A variant in the patients of POAG in Pakistan. The findings could be helpful for genetic screening and in-depth understanding of underlying causes in the pathogenesis of POAG.
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Affiliation(s)
- Ashok Kumar Narsani
- Institute of Biotechnology & Genetic Engineering, University of Sindh, Jamshoro, Pakistan.,Department of Ophthalmology, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Ali Muhammad Waryah
- Department Molecular Biology and Genetics, Medical Research Center, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Muhammad Rafiq
- Institute of Biotechnology & Genetic Engineering, University of Sindh, Jamshoro, Pakistan
| | - Hina Shaikh
- Department Molecular Biology and Genetics, Medical Research Center, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Syed Habib Ahmed Naqvi
- Institute of Biotechnology & Genetic Engineering, University of Sindh, Jamshoro, Pakistan
| | - Raveet Kumar
- Department of Ophthalmology, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Pawan Kumar
- Department of Ophthalmology, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
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Pathak AK, Husain N, Kant S, Bala L. Relevance of genetic polymorphisms in tobacco-related detoxifying enzymes in non-small cell lung carcinoma susceptibility. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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