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Xia G, Zhou G, Jiang W, Chu C, Wang L, Moorthy B. Attenuation of Polycyclic Aromatic Hydrocarbon (PAH)-Induced Carcinogenesis and Tumorigenesis by Omega-3 Fatty Acids in Mice In Vivo. Int J Mol Sci 2024; 25:3781. [PMID: 38612589 PMCID: PMC11012139 DOI: 10.3390/ijms25073781] [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: 01/23/2024] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
Lung cancer is the leading cause of cancer death worldwide. Polycyclic aromatic hydrocarbons (PAHs) are metabolized by the cytochrome P450 (CYP)1A and 1B1 to DNA-reactive metabolites, which could lead to mutations in critical genes, eventually resulting in cancer. Omega-3 fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are beneficial against cancers. In this investigation, we elucidated the mechanisms by which omega-3 fatty acids EPA and DHA will attenuate PAH-DNA adducts and lung carcinogenesis and tumorigenesis mediated by the PAHs BP and MC. Adult wild-type (WT) (A/J) mice, Cyp1a1-null, Cyp1a2-null, or Cyp1b1-null mice were exposed to PAHs benzo[a]pyrene (BP) or 3-methylcholanthrene (MC), and the effects of omega-3 fatty acid on PAH-mediated lung carcinogenesis and tumorigenesis were studied. The major findings were as follows: (i) omega-3 fatty acids significantly decreased PAH-DNA adducts in the lungs of each of the genotypes studied; (ii) decreases in PAH-DNA adduct levels by EPA/DHA was in part due to inhibition of CYP1B1; (iii) inhibition of soluble epoxide hydrolase (sEH) enhanced the EPA/DHA-mediated prevention of pulmonary carcinogenesis; and (iv) EPA/DHA attenuated PAH-mediated carcinogenesis in part by epigenetic mechanisms. Taken together, our results suggest that omega-3 fatty acids have the potential to be developed as cancer chemo-preventive agents in people.
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Affiliation(s)
- Guobin Xia
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine and Texas Childrens’ Hospital, Houston, TX 77030, USA; (G.X.); (W.J.); (C.C.); (L.W.)
| | - Guodong Zhou
- Institute of Biosciences and Technology, College of Medicine, Texas A&M University, Houston, TX 77030, USA
| | - Weiwu Jiang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine and Texas Childrens’ Hospital, Houston, TX 77030, USA; (G.X.); (W.J.); (C.C.); (L.W.)
| | - Chun Chu
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine and Texas Childrens’ Hospital, Houston, TX 77030, USA; (G.X.); (W.J.); (C.C.); (L.W.)
| | - Lihua Wang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine and Texas Childrens’ Hospital, Houston, TX 77030, USA; (G.X.); (W.J.); (C.C.); (L.W.)
| | - Bhagavatula Moorthy
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine and Texas Childrens’ Hospital, Houston, TX 77030, USA; (G.X.); (W.J.); (C.C.); (L.W.)
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Zuo C, Fan P, Yang Y, Hu C. MiR-488-3p facilitates wound healing through CYP1B1-mediated Wnt/β-catenin signaling pathway by targeting MeCP2. J Diabetes Investig 2024; 15:145-158. [PMID: 37961023 PMCID: PMC10804895 DOI: 10.1111/jdi.14099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/15/2023] [Accepted: 09/28/2023] [Indexed: 11/15/2023] Open
Abstract
INTRODUCTION Diabetic wounds are difficult to heal, but the pathogenesis is unknown. MicroRNAs (miRNAs) are thought to play important roles in wound healing. The effect of miR-488-3p in wound healing was studied in this article. MATERIALS AND METHODS The gene methylation was measured by methylation specific PCR (MSP) assay. A dual-luciferase reporter assay was adopted to analyze the interaction between miR-488-3p and MeCP2. RESULTS Cytochrome P450 1B1 (CYP1B1) is a monooxygenase belonging to the cytochrome P450 family that aids in wound healing. Our findings showed that the miR-488-3p and CYP1B1 expression levels were much lower in wound tissues of diabetics with skin defects, but the methyl-CpG-binding protein 2 (MeCP2) level was significantly higher than that in control skin tissues. MiR-488-3p overexpression increased cell proliferation and migration, as well as HUVEC angiogenesis, while inhibiting apoptosis, according to function experiments. In vitro, MeCP2 inhibited wound healing by acting as a target of miR-488-3p. We later discovered that MeCP2 inhibited CYP1B1 expression by enhancing its methylation state. In addition, CYP1B1 knockdown inhibited wound healing. Furthermore, MeCP2 overexpression abolished the promoting effect of miR-488-3p on wound healing. It also turned out that CYP1B1 promoted wound healing by activating the Wnt4/β-catenin pathway. Animal experiments also showed that miR-488-3p overexpression could accelerate wound healing in diabetic male SD rats. CONCLUSIONS MiR-488-3p is a potential therapeutic target for diabetic wound healing since it improved wound healing by activating the CYP1B1-mediated Wnt4/-catenin signaling cascade via MeCP2.
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Affiliation(s)
- Chenchen Zuo
- Department of Plastic Surgery, Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Pengju Fan
- Department of Plastic Surgery, Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Ying Yang
- Department of Plastic Surgery, Xiangya HospitalCentral South UniversityChangshaHunanChina
| | - Chengjun Hu
- Department of Plastic Surgery, Xiangya HospitalCentral South UniversityChangshaHunanChina
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Karimi M, Mendez-Pineda S, Blanché H, Boland A, Besse C, Deleuze JF, Meng XY, Sirab N, Groussard K, Lebret T, Bonastre J, Allory Y, Radvanyi F, Benhamou S, Michiels S. A Case-Only Genome-Wide Interaction Study of Smoking and Bladder Cancer Risk: Results from the COBLAnCE Cohort. Cancers (Basel) 2023; 15:4218. [PMID: 37686494 PMCID: PMC10487226 DOI: 10.3390/cancers15174218] [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: 07/06/2023] [Revised: 08/02/2023] [Accepted: 08/07/2023] [Indexed: 09/10/2023] Open
Abstract
Bladder cancer (BC) is the 6th most common cancer worldwide, with tobacco smoking considered as its main risk factor. Accumulating evidence has found associations between genetic variants and the risk of BC. Candidate gene-environment interaction studies have suggested interactions between cigarette smoking and NAT2/GSTM1 gene variants. Our objective was to perform a genome-wide association case-only study using the French national prospective COBLAnCE cohort (COhort to study BLAdder CancEr), focusing on smoking behavior. The COBLAnCE cohort comprises 1800 BC patients enrolled between 2012 and 2018. Peripheral blood samples collected at enrolment were genotyped using the Illumina Global Screening Array with a Multi-Disease drop-in panel. Genotyping data (9,719,614 single nucleotide polymorphisms (SNP)) of 1674, 1283, and 1342 patients were analyzed for smoking status, average tobacco consumption, and age at smoking initiation, respectively. A genome-wide association study (GWAS) was conducted adjusting for gender, age, and genetic principal components. The results suggest new candidate loci (4q22.1, 12p13.1, 16p13.3) interacting with smoking behavior for the risk of BC. Our results need to be validated in other case-control or cohort studies.
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Affiliation(s)
- Maryam Karimi
- Oncostat U1018 Inserm, Équipe Labellisée Ligue Contre le Cancer, Université Paris-Saclay, 94805 Villejuif, France
- Bureau de Biostatistique et d’Épidémiologie, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France
| | - Sebastian Mendez-Pineda
- Oncostat U1018 Inserm, Équipe Labellisée Ligue Contre le Cancer, Université Paris-Saclay, 94805 Villejuif, France
| | - Hélène Blanché
- CEPH-Biobank, Fondation Jean Dausset-CEPH, 75010 Paris, France
| | - Anne Boland
- Centre National de Recherche en Génomique Humaine (CNRGH), CEA, Université Paris-Saclay, 91057 Evry, France
| | - Céline Besse
- Centre National de Recherche en Génomique Humaine (CNRGH), CEA, Université Paris-Saclay, 91057 Evry, France
| | - Jean-François Deleuze
- CEPH-Biobank, Fondation Jean Dausset-CEPH, 75010 Paris, France
- Centre National de Recherche en Génomique Humaine (CNRGH), CEA, Université Paris-Saclay, 91057 Evry, France
| | | | - Nanor Sirab
- Curie Institute, CNRS, UMR144, Molecular Oncology Team, PSL Research University, 75005 Paris, France
| | - Karine Groussard
- Oncostat U1018 Inserm, Équipe Labellisée Ligue Contre le Cancer, Université Paris-Saclay, 94805 Villejuif, France
| | | | - Julia Bonastre
- Oncostat U1018 Inserm, Équipe Labellisée Ligue Contre le Cancer, Université Paris-Saclay, 94805 Villejuif, France
- Bureau de Biostatistique et d’Épidémiologie, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France
| | - Yves Allory
- CNRS UMR144, Curie Institute, 75005 Paris, France
- UVSQ, Curie Institute, Department of Pathology, Université Paris-Saclay, 92210 Saint-Cloud, France
| | | | - Simone Benhamou
- Oncostat U1018 Inserm, Équipe Labellisée Ligue Contre le Cancer, Université Paris-Saclay, 94805 Villejuif, France
| | - Stefan Michiels
- Oncostat U1018 Inserm, Équipe Labellisée Ligue Contre le Cancer, Université Paris-Saclay, 94805 Villejuif, France
- Bureau de Biostatistique et d’Épidémiologie, Gustave Roussy, Université Paris-Saclay, 94805 Villejuif, France
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Rayner RE, Makena P, Liu G, Prasad GL, Cormet-Boyaka E. Differential gene expression of 3D primary human airway cultures exposed to cigarette smoke and electronic nicotine delivery system (ENDS) preparations. BMC Med Genomics 2022; 15:76. [PMID: 35369880 PMCID: PMC8978419 DOI: 10.1186/s12920-022-01215-x] [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: 04/14/2021] [Accepted: 03/08/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Acute exposure to cigarette smoke alters gene expression in several biological pathways such as apoptosis, immune response, tumorigenesis and stress response, among others. However, the effects of electronic nicotine delivery systems (ENDS) on early changes in gene expression is relatively unknown. The objective of this study was to evaluate the early toxicogenomic changes using a fully-differentiated primary normal human bronchial epithelial (NHBE) culture model after an acute exposure to cigarette and ENDS preparations. RESULTS RNA sequencing and pathway enrichment analysis identified time and dose dependent changes in gene expression and several canonical pathways when exposed to cigarette preparations compared to vehicle control, including oxidative stress, xenobiotic metabolism, SPINK1 general cancer pathways and mucociliary clearance. No changes were observed with ENDS preparations containing up to 28 µg/mL nicotine. Full model hierarchical clustering revealed that ENDS preparations were similar to vehicle control. CONCLUSION This study revealed that while an acute exposure to cigarette preparations significantly and differentially regulated many genes and canonical pathways, ENDS preparations containing the same concentration of nicotine had very little effect on gene expression in fully-differentiated primary NHBE cultures.
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Affiliation(s)
- Rachael E Rayner
- Department of Veterinary Biosciences, The Ohio State University, 1925 Coffey Road, Columbus, OH, 43210, USA
| | | | - Gang Liu
- RAI Services Company, Winston-Salem, NC, USA
| | - G L Prasad
- RAI Services Company, Winston-Salem, NC, USA
- Prasad Scientific Consulting LLC, Lewisville, NC, USA
| | - Estelle Cormet-Boyaka
- Department of Veterinary Biosciences, The Ohio State University, 1925 Coffey Road, Columbus, OH, 43210, USA.
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Cellular and Molecular Signatures of Oxidative Stress in Bronchial Epithelial Cell Models Injured by Cigarette Smoke Extract. Int J Mol Sci 2022; 23:ijms23031770. [PMID: 35163691 PMCID: PMC8836577 DOI: 10.3390/ijms23031770] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 02/06/2023] Open
Abstract
Exposure of the airways epithelium to environmental insults, including cigarette smoke, results in increased oxidative stress due to unbalance between oxidants and antioxidants in favor of oxidants. Oxidative stress is a feature of inflammation and promotes the progression of chronic lung diseases, including Chronic Obstructive Pulmonary Disease (COPD). Increased oxidative stress leads to exhaustion of antioxidant defenses, alterations in autophagy/mitophagy and cell survival regulatory mechanisms, thus promoting cell senescence. All these events are amplified by the increase of inflammation driven by oxidative stress. Several models of bronchial epithelial cells are used to study the molecular mechanisms and the cellular functions altered by cigarette smoke extract (CSE) exposure, and to test the efficacy of molecules with antioxidant properties. This review offers a comprehensive synthesis of human in-vitro and ex-vivo studies published from 2011 to 2021 describing the molecular and cellular mechanisms evoked by CSE exposure in bronchial epithelial cells, the most used experimental models and the mechanisms of action of cellular antioxidants systems as well as natural and synthetic antioxidant compounds.
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Li N, Zhang T, He M, Mu Y. MeCP2 attenuates cardiomyocyte hypoxia/reperfusion-induced injury via regulation of the SFRP4/Wnt/β-catenin axis. Biomarkers 2021; 26:363-370. [PMID: 33726573 DOI: 10.1080/1354750x.2021.1903999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Objective: Methylated CpG binding protein 2 (MeCP2) is closely associated with heart failure, but its role in I/R injury remains unclear. The purpose of this study was to explore the role and underling mechanism of MeCP2 in myocardial I/R injury.Methods: Hypoxia/reperfusion (H/R)-induced H9c2 cardiomyocytes was used to establish an in vitro I/R injury model. Oxidative stress was assessed by measuring reactive oxygen species (ROS) generation, malondialdehyde (MDA) content and superoxide dismutase (SOD) activity. Cell viability and cell cycle arrest were evaluated by the Cell Counting Kit-8 assay and cell cycle assay, respectively. Apoptosis was determined using flow cytometry analysis.Results: The expression of MeCP2 in H9c2 cells was decreased after H/R treatment. The overexpression of MeCP2 inhibited H/R-induced oxidative stress, cell cycle arrest and apoptosis of H9c2 cells. Moreover, MeCP2 inhibited the activation of secreted frizzled related protein 4 (SFRP4)/Wnt/β-catenin axis, and SFRP4 relieved the effect of MeCP2 on oxidative stress, cell cycle arrest and apoptosis in H/R-induced H9c2 cells.Conclusions: MeCP2 attenuated H/R-induced injury in H9c2 cardiomyocytes by modulating the SFRP4/Wnt/β-catenin axis, which suggested that MeCP2 might serve as a therapeutic target of patients with AMI after reperfusion.
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Affiliation(s)
- Nan Li
- Department of Cardiology, Xi'an Central Hospital, Xi'an, China
| | - Tao Zhang
- Department of Cardiology, Xi'an Central Hospital, Xi'an, China
| | - Mengying He
- Department of Center sterile supply, Xi'an Hospital of Traditional Chinese Medicine, Shaanxi, China
| | - Yudong Mu
- Department of Clinical Laboratory, Shaanxi Provincial Tumor Hospital, Affiliated Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
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Emerging physiological and pathological roles of MeCP2 in non-neurological systems. Arch Biochem Biophys 2021; 700:108768. [PMID: 33485848 DOI: 10.1016/j.abb.2021.108768] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 01/08/2021] [Accepted: 01/14/2021] [Indexed: 02/08/2023]
Abstract
Numerous neurological and non-neurological disorders are associated with dysfunction of epigenetic modulators, and methyl CpG binding protein 2 (MeCP2) is one of such proteins. Initially identified as a transcriptional repressor, MeCP2 specifically binds to methylated DNA, and mutations of MeCP2 have been shown to cause Rett syndrome (RTT), a severe neurological disorder. Recently, accumulating evidence suggests that ubiquitously expressed MeCP2 also plays a central role in non-neurological disorders including cardiac dysfunction, liver injury, respiratory disorders, urological dysfunction, adipose tissue metabolism disorders, movement abnormality and inflammatory responses in a DNA methylation dependent or independent manner. Despite significant progresses in our understanding of MeCP2 over the last few decades, there is still a considerable knowledge gap to translate the in vitro and in vivo experimental findings into therapeutic interventions. In this review, we provide a synopsis of the role of MeCP2 in the pathophysiology of non-neurological disorders, MeCP2-based research directions and therapeutic strategies for non-neurological disorders are also discussed.
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