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Chen Q, Xie Y, Dong X, Zhang X, Zhang Y, Yuan X, Ding X, Qiu L. TCDD induces cleft palate through exosomes derived from mesenchymal cells. Toxicol Res (Camb) 2022; 11:901-910. [PMID: 36569487 PMCID: PMC9773059 DOI: 10.1093/toxres/tfac068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 08/31/2022] [Accepted: 09/10/2022] [Indexed: 12/24/2022] Open
Abstract
TCDD (2,3,7,8-tetrachlorodibenzo-p-dioxin) is a ubiquitous environmental toxicant and a notable teratogenic agent for cleft palate (CP), a common congenital structural malformation that can result from abnormalities during palatal shelf connection and/or fusion. The development of the palate requires precise coordination between mesenchymal and epithelial cells. Exosomes are vesicles secreted by cells and participate in organ development by transferring various bioactive molecules between cells and regulating cell proliferation, migration, apoptosis, and epithelial-mesenchymal transition (EMT); these vesicles represent a new method of intercellular communication. To explore how TCDD could influence palatal cell behaviors and communication, we treated mesenchymal cells with TCDD, collected the exosomes secreted by the cells, assessed the 2 types of palatal cells, and then observed the effects of TCDD-induced exosomes. We found that the effects of TCDD-induced exosomes were equal to those of TCDD. Thus, TCDD might change the genetic materials of palatal cells and exosomes to cause dysregulated gene expression from parental cells, affect cellular information communicators, and induce abnormal cellular behaviors that could lead to CP.
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Affiliation(s)
- Qiang Chen
- Department of Burn and Plastic Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Centre for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400000 P.R. China
- Department of Pediatrics Surgery, Chongqing University Three Gorges Hospital, Chongqing 400000 P.R. China
| | - Yue Xie
- Department of Burn and Plastic Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Centre for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400000 P.R. China
| | - Xiaobo Dong
- Department of Burn and Plastic Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Centre for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400000 P.R. China
| | - Xiao Zhang
- Department of Burn and Plastic Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Centre for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400000 P.R. China
| | - Yunxuan Zhang
- Department of Burn and Plastic Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Centre for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400000 P.R. China
| | - Xingang Yuan
- Department of Burn and Plastic Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Centre for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400000 P.R. China
| | - Xionghui Ding
- Department of Burn and Plastic Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Centre for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400000 P.R. China
| | - Lin Qiu
- Department of Burn and Plastic Surgery, Children's Hospital of Chongqing Medical University, National Clinical Research Centre for Children Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400000 P.R. China
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2
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Satake K, Ishii T, Morikawa T, Sakamoto T, Nishii Y. Quercetin Reduces the Development of 2,3,7,8-Tetrachlorodibenzo-p-dioxin-Induced Cleft Palate in Mice by Suppressing CYP1A1 via the Aryl Hydrocarbon Receptor. Nutrients 2022; 14:nu14122448. [PMID: 35745180 PMCID: PMC9229746 DOI: 10.3390/nu14122448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/07/2022] [Accepted: 06/10/2022] [Indexed: 11/16/2022] Open
Abstract
Quercetin is a flavonoid with a wide range of pharmacological activities, including anticancer, antioxidant, and anti-inflammatory effects. Since it is a nutrient that can be consumed with a regular diet, quercetin has recently garnered interest. Quercetin acts as a phytochemical ligand for the aryl hydrocarbon receptor (AhR). Cleft lip and palate are among the most frequently diagnosed congenital diseases, and exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) during pregnancy induces cleft palate via AhR. In this study, we investigated the preventive effect of quercetin intake on the TCDD-induced cleft palate and its mechanism of action. The in vivo results suggest that quercetin intake by pregnant mice can prevent cleft palate in fetal mice. In vitro, the addition of TCDD induced a reduction in cell migration and the proliferation of mouse embryonic palatal mesenchymal cells, which was mitigated by the addition of quercetin. The addition of quercetin did not alter the mRNA expression levels of the AhR repressor but significantly suppressed mRNA expression of CYP1A1. In addition, the binding of AhR to a xenobiotic responsive element was inhibited by quercetin, based on a chemically activated luciferase expression assay. In conclusion, our results suggest that quercetin reduces the development of TCDD-induced cleft palate by inhibiting CYP1A1 through AhR.
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Histological and Immunohistochemical Studies to Determine the Mechanism of Cleft Palate Induction after Palatal Fusion in Mice Exposed to TCDD. Int J Mol Sci 2022; 23:ijms23042069. [PMID: 35216185 PMCID: PMC8878191 DOI: 10.3390/ijms23042069] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 02/04/2023] Open
Abstract
Rupture of the basement membrane in fused palate tissue can cause the palate to separate after fusion in mice, leading to the development of cleft palate. Here, we further elucidate the mechanism of palatal separation after palatal fusion in 8–10-week-old ICR female mice. On day 12 of gestation, 40 μg/kg of 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), sufficient to cause cleft palate in 100% of mice, was dissolved in 0.4 mL of olive oil containing toluene and administered as a single dose via a gastric tube. Fetal palatine frontal sections were observed by H&E staining, and epithelial cell adhesion factors, apoptosis, and cell proliferation were observed from the anterior to posterior palate. TUNEL-positive cells and Ki67-positive cells were observed around the posterior palatal dissection area of the TCDD-treated group. Moreover, in fetal mice exposed to TCDD, some fetuses exhibited cleft palate dehiscence during fusion. The results suggest that palatal dehiscence may be caused by abnormal cell proliferation in epithelial tissues, decreased intercellular adhesion, and inhibition of mesenchymal cell proliferation. By elucidating the mechanism of cleavage after palatal fusion, this research can contribute to establishing methods for the prevention of cleft palate development.
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Liu X, Li X, Tao Y, Li N, Ji M, Zhang X, Chen Y, He Z, Yu K, Yu Z. TCDD inhibited the osteogenic differentiation of human fetal palatal mesenchymal cells through AhR and BMP-2/TGF-β/Smad signaling. Toxicology 2019; 431:152353. [PMID: 31887333 DOI: 10.1016/j.tox.2019.152353] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 12/17/2019] [Accepted: 12/26/2019] [Indexed: 12/13/2022]
Abstract
Exposure to environmental toxicant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) causes cleft palate at high rates, but little is known about the underlying biological mechanisms. In the present study, we cultured osteoblasts from human fetal palate mesenchymal cells (hFPMCs) to explore the effects of TCDD on osteogenic differentiation. The results showed that TCDD significantly decreased cell proliferation, alkaline phosphatase (ALP) activity and calcium deposition. RNA analyses and protein detection demonstrated that TCDD downregulated a wide array of pro-osteogenic biomarkers. Further investigation of the underlying molecular mechanisms revealed that exposure to TCDD activated aryl hydrocarbon receptor (AhR) signaling and inhibited BMP-2/TGF-β1/Smad pathway molecules. The inactivation of AhR signaling using CRISPR/Cas9-mediated AhR deletion or by genetic siRNA knockdown significantly blocked the effects induced by TCDD, suggesting a critical role of AhR activation in the TCDD-mediated inhibition of hFPMC osteogenic differentiation. The cotreatment with TGF-β1 or BMP-2 and TCDD significantly relieved the activation of AhR and rescued the impairment of osteogenesis caused by TCDD. Taken together, our findings indicated that TCDD inhibited the osteogenic differentiation of hFPMCs via crosstalk between AhR and BMP-2/TGF-β1/Smad signaling pathway.
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Affiliation(s)
- Xiaozhuan Liu
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xue Li
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuchang Tao
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Ning Li
- College of Food Science and Technology, Henan Agricultural University, China
| | - Mengmeng Ji
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Xiuli Zhang
- Division of Blood Vessel Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yao Chen
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhidong He
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Kailun Yu
- School of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Zengli Yu
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, China; School of Public Health, Zhengzhou University, Zhengzhou, Henan, China.
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5
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Wang C, Zhai SN, Yuan XG, Zhang DW, Jiang H, Qiu L, Fu YX. Common differentially expressed proteins were found in mouse cleft palate models induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin and retinoic acid. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2019; 72:103270. [PMID: 31586870 DOI: 10.1016/j.etap.2019.103270] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 08/20/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
Cleft palate(CP) is a widely studied congenital malformation. However, its etiology and pathogenesis still remain unclear. Proteins are fundamental molecules that participate in every biological process within cells. In this study, we established CP mouse models induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and retinoic acid (RA), using proteomics technology isobaric tags for relative and absolute quantitation (iTRAQ) to investigate the key proteins in the formation of CP. Pregnant mice were given a gavage of TCDD 28μg/kg or retinoic acid 80mg/kg of body weight or equivalent corn oil at gestational day 10.5(GD10.5) and sacrificed at GD 17.5. Foetal mice were recorded and collected for further detection. Western blot was performed to verify the iTRAQ results. Eventually, we obtained 18 common differentially expressed proteins in TCDD group and RA group compared with normal control, 17 up-regulated and 1 down-regulated. 14-3-3sigma and Annexin A1 were up-regulated in experimental groups at GD17.5, which was consistent with Western blot. We speculated that the common differentially expressed proteins might be one of the molecular mechanisms in the formation of cleft palate.
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Affiliation(s)
- Chen Wang
- Department of Burns and Plastic Surgery, Children's hospital of Soochow University, Suzhou 215000 PR China
| | - Sha-Na Zhai
- Department of Pediatrics, Shanghai General Hospital, Shanghai Jiaotong University, Shanghai 200080 PR China
| | - Xin-Gang Yuan
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, PR China; Department of Burns and Plastic Surgery, Children's Hospital of Chongqing Medical University, Chongqing 400014 PR China
| | - Ding-Wen Zhang
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, PR China; Department of Burns and Plastic Surgery, Children's Hospital of Chongqing Medical University, Chongqing 400014 PR China
| | - Heng Jiang
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, PR China; Department of Burns and Plastic Surgery, Children's Hospital of Chongqing Medical University, Chongqing 400014 PR China
| | - Lin Qiu
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, PR China; Department of Burns and Plastic Surgery, Children's Hospital of Chongqing Medical University, Chongqing 400014 PR China.
| | - Yue-Xian Fu
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, PR China; Department of Burns and Plastic Surgery, Children's Hospital of Chongqing Medical University, Chongqing 400014 PR China.
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6
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Yoshioka W, Tohyama C. Mechanisms of Developmental Toxicity of Dioxins and Related Compounds. Int J Mol Sci 2019; 20:E617. [PMID: 30708991 PMCID: PMC6387164 DOI: 10.3390/ijms20030617] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 12/20/2022] Open
Abstract
Dioxins and related compounds induce morphological abnormalities in developing animals in an aryl hydrocarbon receptor (AhR)-dependent manner. Here we review the studies in which 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is used as a prototypical compound to elucidate the pathogenesis of morphological abnormalities. TCDD-induced cleft palate in fetal mice involves a delay in palatogenesis and dissociation of fused palate shelves. TCDD-induced hydronephrosis, once considered to be caused by the anatomical obstruction of the ureter, is now separated into TCDD-induced obstructive and non-obstructive hydronephrosis, which develops during fetal and neonatal periods, respectively. In the latter, a prostaglandin E₂ synthesis pathway and urine concentration system are involved. TCDD-induced abnormal development of prostate involves agenesis of the ventral lobe. A suggested mechanism is that AhR activation in the urogenital sinus mesenchyme by TCDD modulates the wingless-type MMTV integration site family (WNT)/β-catenin signaling cascade to interfere with budding from urogenital sinus epithelium. TCDD exposure to zebrafish embryos induces loss of epicardium progenitor cells and heart malformation. AHR2-dependent downregulation of Sox9b expression in cardiomyocytes is a suggested underlying mechanism. TCDD-induced craniofacial malformation in zebrafish is considered to result from the AHR2-dependent reduction in SRY-box 9b (SOX9b), probably partly via the noncoding RNA slincR, resulting in the underdevelopment of chondrocytes and cartilage.
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Affiliation(s)
- Wataru Yoshioka
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan.
| | - Chiharu Tohyama
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan.
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7
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Cleft palate formation after palatal fusion occurs due to the rupture of epithelial basement membranes. J Craniomaxillofac Surg 2018; 46:2027-2031. [DOI: 10.1016/j.jcms.2018.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 08/21/2018] [Accepted: 09/12/2018] [Indexed: 01/14/2023] Open
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8
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Tran DL, Imura H, Mori A, Suzuki S, Niimi T, Ono M, Sakuma C, Nakahara S, Nguyen TTH, Pham PT, Hoang V, Tran VTT, Nguyen MD, Natsume N. Association of MEOX2 polymorphism with nonsyndromic cleft palate only in a Vietnamese population. Congenit Anom (Kyoto) 2018; 58:124-129. [PMID: 29030958 DOI: 10.1111/cga.12259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/05/2017] [Accepted: 10/10/2017] [Indexed: 11/30/2022]
Abstract
To evaluate the association between the single nucleotide polymorphism (SNP) rs227493 in the MEOX2 gene and nonsyndromic cleft palate only, this research was conducted as a case-control study by comparing a nonsyndromic cleft palate only group with an independent, healthy, and unaffected control group who were both examined by specialists. Based on clinical examination and medical records, we analyzed a total of 570 DNA samples, including 277 cases and 293 controls, which were extracted from dry blood spot samples collected from both the Odonto and Maxillofacial Hospital in Ho Chi Minh City and Nguyen Dinh Chieu Hospital in Ben Tre province, respectively. The standard procedures of genotyping the specific SNP (rs2237493) for MEOX2 were performed on a StepOne Realtime PCR system with TaqMan SNP Genotyping Assays. Significant statistical differences were observed in allelic frequencies (allele T and allele G) between the non-syndromic cleft palate only and control groups in female subjects, with an allelic odds ratio of 1.455 (95% confidence interval: 1.026-2.064) and P < 0.05. These study findings suggest that nonsyndromic isolated cleft palate might be influenced by variation of MEOX2, especially SNP rs2237493 in Vietnamese females.
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Affiliation(s)
- Duy L Tran
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Nguyen Dinh Chieu General Hopsital, Ben Tre, Vietnam
| | - Hideto Imura
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Cleft Lip and Palate Center, Aichi Gakuin Dental Hospital, Nagoya, Japan.,Division of Speech, Hearing, and Language, Aichi Gakuin Dental Hospital, Nagoya, Japan
| | - Akihiro Mori
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Cleft Lip and Palate Center, Aichi Gakuin Dental Hospital, Nagoya, Japan.,Division of Speech, Hearing, and Language, Aichi Gakuin Dental Hospital, Nagoya, Japan
| | - Satoshi Suzuki
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Cleft Lip and Palate Center, Aichi Gakuin Dental Hospital, Nagoya, Japan.,Division of Speech, Hearing, and Language, Aichi Gakuin Dental Hospital, Nagoya, Japan
| | - Teruyuki Niimi
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Cleft Lip and Palate Center, Aichi Gakuin Dental Hospital, Nagoya, Japan.,Division of Speech, Hearing, and Language, Aichi Gakuin Dental Hospital, Nagoya, Japan
| | - Maya Ono
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Cleft Lip and Palate Center, Aichi Gakuin Dental Hospital, Nagoya, Japan.,Division of Speech, Hearing, and Language, Aichi Gakuin Dental Hospital, Nagoya, Japan
| | - Chisato Sakuma
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Cleft Lip and Palate Center, Aichi Gakuin Dental Hospital, Nagoya, Japan.,Division of Speech, Hearing, and Language, Aichi Gakuin Dental Hospital, Nagoya, Japan
| | - Shinichi Nakahara
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan
| | - Tham T H Nguyen
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Nguyen Dinh Chieu General Hopsital, Ben Tre, Vietnam
| | - Phuong T Pham
- Nguyen Dinh Chieu General Hopsital, Ben Tre, Vietnam
| | - Viet Hoang
- Nguyen Dinh Chieu General Hopsital, Ben Tre, Vietnam
| | - Van T T Tran
- Odonto and Maxillofacial Hospital, Ho Chi Minh, Vietnam
| | - Minh D Nguyen
- Odonto and Maxillofacial Hospital, Ho Chi Minh, Vietnam
| | - Nagato Natsume
- Division of Research and Treatment for Oral Maxillofacial Congenital Anomalies, Aichi Gakuin University, Nagoya, Japan.,Cleft Lip and Palate Center, Aichi Gakuin Dental Hospital, Nagoya, Japan.,Division of Speech, Hearing, and Language, Aichi Gakuin Dental Hospital, Nagoya, Japan
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9
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Effect of TCDD on the fate of epithelial cells isolated from human fetal palatal shelves (hFPECs). Toxicol Appl Pharmacol 2016; 305:186-193. [DOI: 10.1016/j.taap.2016.06.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 06/09/2016] [Accepted: 06/10/2016] [Indexed: 12/21/2022]
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10
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Gao L, Yin J, Wu W. Long non-coding RNA H19-mediated mouse cleft palate induced by 2,3,7,8-tetrachlorodibenzo- p-dioxin. Exp Ther Med 2016; 11:2355-2360. [PMID: 27284320 DOI: 10.3892/etm.2016.3195] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 01/19/2016] [Indexed: 12/14/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) are a novel class of transcripts, which are pervasively transcribed in the genome and a have greatly unknown biological function. Previous studies have identified that lncRNAs serve an important role in embryonic development. However, the function and mechanism of lncRNAs in the development of palate remains unclear. The aim of the present study was to investigate the role of lncRNA H19 in cleft palate (CP) development in mice. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a well-known teratogen that can induce CP. After establishing a CP mouse model by oral administration of TCDD in vivo, no significant differences were detected in the tail length and body weight of fetuses between the TCDD-treated and control groups during the embryonic days 12 to 17. Furthermore, the expression levels of lncRNA H19 and target gene insulin-like growth factor 2 (IGF2) presented specific embryo age-associated differences during the entire development of CP in mice. An inverse correlation was identified between lncRNA H19 and IGF2 expression levels in the CP model. In conclusion, these findings revealed that lncRNA H19 mediated the CP induced by TCDD in mice.
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Affiliation(s)
- Liyun Gao
- Department of Toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China; Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Jun Yin
- Department of Toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Weidong Wu
- Department of Occupational and Environmental Health, School of Public Health, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
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11
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Gao Z, Bu Y, Liu X, Wang X, Zhang G, Wang E, Ding S, Liu Y, Shi R, Li Q, Fu J, Yu Z. TCDD promoted EMT of hFPECs via AhR, which involved the activation of EGFR/ERK signaling. Toxicol Appl Pharmacol 2016; 298:48-55. [PMID: 26971374 DOI: 10.1016/j.taap.2016.03.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 02/15/2016] [Accepted: 03/08/2016] [Indexed: 02/01/2023]
Abstract
One critical step of second palatal fusion is the newly formed medial epithelia seam (MES) disintegration, which involves apoptosis, epithelial to mesenchymal transition (EMT), and cell migration. Although the environmental toxicant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) produces cleft palate at high rates, little is known about the effects of TCDD exposure on the fate of palatal epithelial cells. By using primary epithelial cells isolated from human fetal palatal shelves (hFPECs), we show that TCDD increased cell proliferation and EMT, as demonstrated by increased the epithelial markers (E-cadherin and cytokeratin14) and enhanced the mesenchymal markers (vimentin and fibronectin), but had no effect on cell migration and apoptosis. TCDD exposure led to a dose-dependent increase in Slug protein expression. Coimmunoprecipitation revealed that TCDD promoted AhR to form a protein complex with Slug. ChIP assay confirmed that TCDD exposure recruited AhR to the xenobiotic responsive element of Slug promoter. Knockdown of AhR by siRNA remarkably weakened TCDD-induced binding of AhR to the XRE promoter of slug, thereby suppressed TCDD-induced vimentin. Further experiment showed that TCDD stimulated EGFR phosphorylation did not influence the TGFβ3/Smad signaling; whereas TCDD increased phosphorylation of ERK1/2 and p38 with no effect on activation of JNK. By using varieties of inhibitors, we confirmed that TCDD promoted proliferation and EMT of hFPECs via activation of EGFR/ERK pathway. These data make a novel contribution to the molecular mechanism of cleft palate by TCDD.
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Affiliation(s)
- Zhan Gao
- School of Public Health, Xinxiang Medical University, 453003, China; The Fifth Affiliated Hospital, Zhengzhou University, 450052, China
| | - Yongjun Bu
- School of Public Health, Xinxiang Medical University, 453003, China
| | - Xiaozhuan Liu
- Medical College, Henan University of Science & Technology, 471023, China
| | - Xugang Wang
- School of Public Health, Xinxiang Medical University, 453003, China
| | - Guofu Zhang
- School of Public Health, Xinxiang Medical University, 453003, China
| | - Erhui Wang
- School of Public Health, Xinxiang Medical University, 453003, China
| | - Shibin Ding
- School of Public Health, Xinxiang Medical University, 453003, China
| | - Yongfeng Liu
- School of Public Health, Xinxiang Medical University, 453003, China
| | - Ruling Shi
- School of Public Health, Xinxiang Medical University, 453003, China
| | - Qiaoyun Li
- The Fifth Affiliated Hospital, Zhengzhou University, 450052, China
| | - Jianhong Fu
- The Fifth Affiliated Hospital, Zhengzhou University, 450052, China
| | - Zengli Yu
- School of Public Health, Xinxiang Medical University, 453003, China; School of Public Health, Zhengzhou University, 450001, China.
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12
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Scortichini G, Amorena M, Brambilla G, Ceci R, Chessa G, Diletti G, Esposito M, Esposito V, Nardelli V. Sheep farming and the impact of environment on food safety. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2015.12.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Visciano P, Scortichini G, Suzzi G, Diletti G, Schirone M, Martino G. Concentrations of Contaminants with Regulatory Limits in Samples of Clam (Chamelea gallina) Collected along the Abruzzi Region Coast in Central Italy. J Food Prot 2015; 78:1719-28. [PMID: 26319726 DOI: 10.4315/0362-028x.jfp-15-082] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Concentrations of pollutants with regulatory limits were determined in specimens of Chamelea gallina, a species of clam collected along the Abruzzi coastal region of the central Adriatic Sea. Nine sampling sites were selected to evaluate the distribution of contaminants in the environment and the health risk for consumers. The concentrations of all the examined compounds were lower than the maximums set by European legislation. Polycyclic aromatic hydrocarbons and total mercury were below the detection limit (0.18 μg/kg for benzo[a]anthracene, 0.30 μg/kg for chrysene, 0.12 μg/kg for benzo[b]fluoranthene, 0.08 μg/kg for benzo[a]pyrene, and 0.0050 mg/kg for total mercury) in all the analyzed samples. Mean concentrations of lead and cadmium were 0.104 and 0.110 mg/kg, respectively. Of the non-dioxin-like polychlorinated biphenyls, PCB-153, PCB-180, and PCB-138 were the most abundant at all sampling sites (1a to 9a) at 0.25 mi (ca. 0.4 km) and at some sampling sites (1b, 2b, 3b, 5b and 7b) at 0.35 mi (ca. 0.56 km). Principal component analysis revealed that the concentrations of dioxin-like polychlorinated biphenyls were similar at the majority of sampling sites, and O8CDD and 2,3,7,8-T4CDF were the predominant dioxin congeners.
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Affiliation(s)
- Pierina Visciano
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, Mosciano Sant'Angelo, Italy
| | - Giampiero Scortichini
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise G. Caporale, Teramo, Italy
| | - Giovanna Suzzi
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, Mosciano Sant'Angelo, Italy
| | - Gianfranco Diletti
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise G. Caporale, Teramo, Italy
| | - Maria Schirone
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, Mosciano Sant'Angelo, Italy.
| | - Giuseppe Martino
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, Mosciano Sant'Angelo, Italy
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Kędzior M, Seredyński R, Godzik U, Tomczyk D, Gutowicz J, Terlecka E, Całkosiński I, Terlecki G. Inhibition of cathepsin B activity by 2,3,7,8-tetrachlorodibenzo-p-dioxin. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:733-737. [PMID: 25163566 DOI: 10.1007/s11356-014-3482-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 08/18/2014] [Indexed: 06/03/2023]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is the most potent toxic isomer in the dioxin-like family. Due to its resistance to metabolic degradation, this ubiquitous environmental pollutant readily accumulates in multiple organs. Cathepsin B is a lysosomal cysteine protease playing an essential role in the intracellular protein turnover. Alterations in its expression, activity, and localization may facilitate the development of many pathologies, including cancer. TCDD, due to its extremely lipophilic nature, may diffuse through biological membranes and affect lysosomal enzymes, including cathepsins. Therefore, in this study we performed two enzymatic assays, spectrofluorimetry and gelatin zymography, in order to evaluate the effect of TCDD on purified bovine cathepsin B. We showed that the dioxin decreases the enzyme's activity in a dose-dependent manner. The reversibility of TCDD-induced inhibition of the protease was also examined, suggesting that TCDD does not bind covalently to the enzyme's active site, acting rather as a reversible inhibitor.
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Affiliation(s)
- Mateusz Kędzior
- Department of Physical Chemistry of Microorganisms, Institute of Genetics and Microbiology, University of Wrocław, Przybyszewskiego 63/77, 51-148, Wrocław, Poland
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TCDD disrupts posterior palatogenesis and causes cleft palate. J Craniomaxillofac Surg 2014; 42:1-6. [DOI: 10.1016/j.jcms.2013.01.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/11/2013] [Accepted: 01/11/2013] [Indexed: 12/17/2022] Open
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16
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Giovannini A, Rivezzi G, Carideo P, Ceci R, Diletti G, Ippoliti C, Migliorati G, Piscitelli P, Ripani A, Salini R, Scortichini G. Dioxins levels in breast milk of women living in Caserta and Naples: assessment of environmental risk factors. CHEMOSPHERE 2014; 94:76-84. [PMID: 24120012 DOI: 10.1016/j.chemosphere.2013.09.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 08/21/2013] [Accepted: 09/02/2013] [Indexed: 05/23/2023]
Abstract
Naples and Caserta provinces are extensively affected by the illegal dumping of hazardous and urban wastes, which were periodically set to fire. Several studies were made on the possible health impact of this illegal waste management. The aim of the study was to detect dioxins levels in breast milk of volunteer primiparae and to assess the possible source of dioxins in the affected areas. The authors determined dioxins levels in breast milk from 100 primiparae from the study area and collected anamnestic information on donors. We determined dioxins levels in breast milk from 100 primiparae from the study area and collected anamnestic information on donors. As a measure of environmental risk of dioxins (EDR) we used the interpolated values of dioxins concentration in buffalo milk samples collected in the study area. Correlations between the EDR, age of the mother, smoking habit, cheese consumption, occupation in activity at risk, presence of plants for the disposal of toxic waste or illegal burning of solid waste near the residence of the donor and dioxin level in breast milk were investigated. The dioxin level in breast milk is significantly correlated to the EDR, the age of the sampled women and the presence of illegal burning of solid waste.
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Affiliation(s)
- Armando Giovannini
- Istituto Zooprofilattico Sperimentale "G. Caporale", via Campo Boario, 64100 Teramo, Italy.
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