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Yu Z, Wang G, Song S, Zhang Y, Wu Y, Zhang Y, Duan W, Liu X. Associations between the proliferation of palatal mesenchymal cells, Tgfβ2 promoter methylation, Meg3 expression, and Smad signaling in atRA-induced cleft palate. Reprod Toxicol 2023; 122:108486. [PMID: 37866657 DOI: 10.1016/j.reprotox.2023.108486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 10/02/2023] [Accepted: 10/05/2023] [Indexed: 10/24/2023]
Abstract
All-trans retinoic acid (atRA) is a teratogen that can induce cleft palate formation. During palatal development, murine embryonic palate mesenchymal (MEPM) cell proliferation is required for the appropriate development of the palatal frame, with Meg3 serving as a key regulator of the proliferative activity of these cells and the associated epithelial-mesenchymal transition process. DNA methylation and signaling via the TGFβ/Smad pathway are key in regulating embryonic development. Here, the impact of atRA on MEPM cell proliferation and associations between Tgfβ2 promoter methylation, Meg3, and signaling via the Smad pathway were explored using C57BL/6 N mice treated with atRA (100 mg/kg) to induce fetal cleft palate formation. Immunohistochemistry and BrdU assays were used to detect MEPM proliferation and DNA methylation assays were performed to detect Tgfβ2 promoter expression. These analyses revealed that atRA suppressed MEPM cell proliferation, promoted the upregulation of Meg3, and reduced the levels of Smad2 and Tgfβ2 expression phosphorylation, whereas Tgfβ2 promoter methylation was unaffected. RNA immunoprecipitation experiments indicated that the TgfβI receptor is directly targeted by Meg3, suggesting that the ability of atRA to induce cleft palate may be mediated through the Tgfβ/Smad signaling pathway.
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Affiliation(s)
- Zengli Yu
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China; School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Guoxu Wang
- School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Shuaixing Song
- School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yaxin Zhang
- School of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yang Wu
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Yuwei Zhang
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Wenjing Duan
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Xiaozhuan Liu
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China.
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Feng S, Yang Y, Yu Z, Bi Y. Folic acid supplementation rescues bladder injury in fetal rats with myelomeningocele. Birth Defects Res 2023; 115:1685-1692. [PMID: 37665042 DOI: 10.1002/bdr2.2243] [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: 05/15/2023] [Revised: 08/02/2023] [Accepted: 08/21/2023] [Indexed: 09/05/2023]
Abstract
BACKGROUND Bladder dysfunction has been linked to the progression of renal failure in children with neurogenic bladder (NB) dysfunction. The purpose of this study was to determine whether bladder injuries in fetal rats with myelomeningocele (MMC) may be treated with folic acid. METHODS Pregnant Sprague-Dawley rats were randomly divided into three groups. On the 10th day of gestation, pregnant rats were intragastrically injected with all-trans retinoic acid (ATRA) (60 mg/kg) to induce MMC fetal rats. The same amount of olive oil was put into the control group to create normal fetal rats. The rats in the rescue group were given folic acid (40 mg/kg) by gavage 0.5 and 12 hr after ATRA therapy. Bladders were obtained via cesarean section on embryonic day E20.5 and examined for MMC. The histology of the fetuses was examined using hematoxylin and eosin staining, and immunohistochemistry (IHC) was utilized to determine the expression of α-smooth muscle actin (α-SMA) and neuron-specific nuclear-binding protein (NeuN). Furthermore, the levels of neuromuscular development-related and apoptotic proteins were determined by western blotting. RESULTS The incidence of MMC in the model group was 60.6% (20/33) while it was much lower in the rescue group (21.4%). In comparison to the model group, the weight and crown-rump length of the fetal rats in the rescue group were significantly improved. IHC revealed that there was no significant difference in the expression of α-SMA and NeuN between the control and ATRA groups, while the expression levels decreased significantly in the MMC group. Western blot analysis showed that there was no significant difference between the model and ATRA groups, but the expression of the α-SMA protein and the β3-tubulin was much lower in the MMC group than in the control group. After the administration of folic acid, the α-SMA and β3-tubulin proteins considerably increased in the folic acid-rescued MMC group and folic acid-rescued ATRA group. Meanwhile, in the control group, the expression of cleaved caspase-3 in the bladder tissue was significantly higher, and the expression of poly (ADP-ribose) polymerase (PARP) protein was significantly lower compared to the control group. Folic acid therapy reduced cleaved caspase-3 expression while increasing PARP expression in comparison to the MMC group. CONCLUSIONS NB in MMC fetal rats is associated with the reduction of bladder nerve and smooth muscle-related protein synthesis. However, folic acid therapy can help improve these functional deficiencies. Folic acid also exhibits strong anti-apoptotic properties against NB in MMC fetal rats.
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Affiliation(s)
- Shaoguang Feng
- Department of Urology, Children's Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
- Department of Pediatric Surgery, Hangzhou Children's Hospital, Hangzhou, People's Republic of China
| | - Yicheng Yang
- Department of Urology, Children's Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Zhechen Yu
- Department of Urology, Children's Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Yunli Bi
- Department of Pediatric Urology, Children's Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China
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Song C, Li T, Zhang C, Li S, Lu S, Zou Y. RA-induced prominence-specific response resulted in distinctive regulation of Wnt and osteogenesis. Life Sci Alliance 2023; 6:e202302013. [PMID: 37541848 PMCID: PMC10403638 DOI: 10.26508/lsa.202302013] [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: 02/25/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/06/2023] Open
Abstract
Proper retinoic acid (RA) signaling is essential for normal craniofacial development. Both excessive RA and RA deficiency in early embryonic stage may lead to a variety of craniofacial malformations, for example, cleft palate, which have been investigated extensively. Dysregulated Wnt and Shh signaling were shown to underlie the pathogenesis of RA-induced craniofacial defects. In our present study, we showed a spatiotemporal-specific effect of RA signaling in regulating early development of facial prominences. Although inhibited Wnt activities was observed in E12.5/E13.5 mouse palatal shelves, early exposure of excessive RA induced Wnt signaling and Wnt-related gene expression in E11.5/E12.5 mouse embryonic frontonasal/maxillary processes. A conserved regulatory network of miR-484-Fzd5 was identified to play critical roles in RA-regulated craniofacial development using RNA-seq. In addition, subsequent osteogenic/chondrogenic differentiation were differentially regulated in discrete mouse embryonic facial prominences in response to early RA induction, demonstrated using both in vitro and in vivo analyses.
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Affiliation(s)
- Chao Song
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Ting Li
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Chunlei Zhang
- First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Shufang Li
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
| | - Songhui Lu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
| | - Yi Zou
- The Key Laboratory of Virology of Guangzhou, Jinan University, Guangzhou, China
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Gallego-Lopez MDC, Ojeda ML, Romero-Herrera I, Nogales F, Carreras O. Folic Acid Homeostasis and Its Pathways Related to Hepatic Oxidation in Adolescent Rats Exposed to Binge Drinking. Antioxidants (Basel) 2022; 11:antiox11020362. [PMID: 35204242 PMCID: PMC8868551 DOI: 10.3390/antiox11020362] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/21/2022] [Accepted: 02/08/2022] [Indexed: 12/19/2022] Open
Abstract
Chronic ethanol consumption and liver disease are intimately related to folic acid (FA) homeostasis. Despite the fact that FA decreases lipid oxidation, its mechanisms are not yet well elucidated. Lately, adolescents have been practising binge drinking (BD), consisting of the intake of a high amount of alcohol in a short time; this is a particularly pro-oxidant form of consumption. The aim of this study is to examine, for the first time, FA homeostasis in BD adolescent rats and its antioxidant properties in the liver. We used adolescent rats, including control rats and rats exposed to an intermittent intraperitoneal BD model, supplemented with or without FA. Renal FA reabsorption and renal FA deposits were increased in BD rats; hepatic deposits were decreased, and heart and serum levels remained unaffected. This depletion in the liver was accompanied by higher transaminase levels; an imbalance in the antioxidant endogenous enzymatic system; lipid and protein oxidation; a decrease in glutathione (GSH) levels; hyper-homocysteinemia (HHcy); an increase in NADPH oxidase (NOX) 1 and NOX4 enzymes; an increase in caspase 9 and 3; and a decrease in the anti-apoptotic metallopeptidase inhibitor 1. Furthermore, BD exposure increased the expression of uncoupled endothelial nitric oxide synthase (eNOS) by increasing reactive nitrogen species generation and the nitration of tyrosine proteins. When FA was administered, hepatic FA levels returned to normal levels; transaminase and lipid and protein oxidation also decreased. Its antioxidant activity was due, in part, to the modulation of superoxide dismutase activity, GSH synthesis and NOX1, NOX4 and caspase expression. FA reduced HHcy and increased the expression of coupled eNOS by increasing tetrahydrobiopterin expression, avoiding nitrosative stress. In conclusion, FA homeostasis and its antioxidant properties are affected in BD adolescent rats, making it clear that this vitamin plays an important role in the oxidative, nitrosative and apoptotic hepatic damage generated by acute ethanol exposure. For this, FA supplementation becomes a potential BD therapy for adolescents, preventing future acute alcohol-related harms.
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Yoshioka H, Ramakrishnan SS, Shim J, Suzuki A, Iwata J. Excessive All-Trans Retinoic Acid Inhibits Cell Proliferation Through Upregulated MicroRNA-4680-3p in Cultured Human Palate Cells. Front Cell Dev Biol 2021; 9:618876. [PMID: 33585479 PMCID: PMC7876327 DOI: 10.3389/fcell.2021.618876] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 01/05/2021] [Indexed: 01/19/2023] Open
Abstract
Cleft palate is the second most common congenital birth defect, and both environmental and genetic factors are involved in the etiology of the disease. However, it remains largely unknown how environmental factors affect palate development. Our previous studies show that several microRNAs (miRs) suppress the expression of genes involved in cleft palate. Here we show that miR-4680-3p plays a crucial role in cleft palate pathogenesis. We found that all-trans retinoic acid (atRA) specifically induces miR-4680-3p in cultured human embryonic palatal mesenchymal (HEPM) cells. Overexpression of miR-4680-3p inhibited cell proliferation in a dose-dependent manner through the suppression of expression of ERBB2 and JADE1, which are known cleft palate-related genes. Importantly, a miR-4680-3p-specific inhibitor normalized cell proliferation and altered expression of ERBB2 and JADE1 in cells treated with atRA. Taken together, our results suggest that upregulation of miR-4680-3p induced by atRA may cause cleft palate through suppression of ERBB2 and JADE1. Thus, miRs may be potential targets for the prevention and diagnosis of cleft palate.
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Affiliation(s)
- Hiroki Yoshioka
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Sai Shankar Ramakrishnan
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Junbo Shim
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Akiko Suzuki
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Junichi Iwata
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States.,MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, United States
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Yoshioka H, Mikami Y, Ramakrishnan SS, Suzuki A, Iwata J. MicroRNA-124-3p Plays a Crucial Role in Cleft Palate Induced by Retinoic Acid. Front Cell Dev Biol 2021; 9:621045. [PMID: 34178974 PMCID: PMC8219963 DOI: 10.3389/fcell.2021.621045] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 05/05/2021] [Indexed: 01/13/2023] Open
Abstract
Cleft lip with/without cleft palate (CL/P) is one of the most common congenital birth defects, showing the complexity of both genetic and environmental contributions [e.g., maternal exposure to alcohol, cigarette, and retinoic acid (RA)] in humans. Recent studies suggest that epigenetic factors, including microRNAs (miRs), are altered by various environmental factors. In this study, to investigate whether and how miRs are involved in cleft palate (CP) induced by excessive intake of all-trans RA (atRA), we evaluated top 10 candidate miRs, which were selected through our bioinformatic analyses, in mouse embryonic palatal mesenchymal (MEPM) cells as well as in mouse embryos treated with atRA. Among them, overexpression of miR-27a-3p, miR-27b-3p, and miR-124-3p resulted in the significant reduction of cell proliferation in MEPM cells through the downregulation of CP-associated genes. Notably, we found that excessive atRA upregulated the expression of miR-124-3p, but not of miR-27a-3p and miR-27b-3p, in both in vivo and in vitro. Importantly, treatment with a specific inhibitor for miR-124-3p restored decreased cell proliferation through the normalization of target gene expression in atRA-treated MEPM cells and atRA-exposed mouse embryos, resulting in the rescue of CP in mice. Taken together, our results indicate that atRA causes CP through the induction of miR-124-3p in mice.
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Affiliation(s)
- Hiroki Yoshioka
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Yurie Mikami
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Sai Shankar Ramakrishnan
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Akiko Suzuki
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Junichi Iwata
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, United States.,Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX, United States.,MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, United States
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7
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Bendahan ZC, Escobar LM, Castellanos JE, González-Carrera MC. Effect of folic acid on animal models, cell cultures, and human oral clefts: a literature review. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2020. [DOI: 10.1186/s43042-020-00108-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Folate is a naturally occurring, water-soluble B vitamin. The synthetic form of this compound is folic acid (FA), the deficiency of which is linked to neural tube disorders (NTD), which can be prevented by consuming it before, or during the early months of, pregnancy. However, the effect of FA on oral cleft formation remains controversial. The aim of the present study was to review the evidence concerning the effect of FA on the formation of cleft lip and palate (CLP) in both animals and humans, as well as its impact on different cell types. A search was conducted on various databases, including MEDLINE, EMBASE, and Central, for articles published until January 2020.
Main body
Current systematic reviews indicate that FA, alone or in combination with other vitamins, prevents NTD; however, there is no consensus on whether its consumption can prevent CLP formation. Conversely, the protective effect of FA on palatal cleft (CP) induction has been inferred from animal models; additionally, in vitro studies enumerate a cell-type and dose-dependent effect of FA on cell viability, proliferation, and differentiation, hence bolstering evidence from epidemiological studies.
Conclusions
Meta-analysis, animal models, and in vitro studies demonstrated the protective effect of FA against isolated CP; however, the heterogeneity of treatment protocols, doses, and FA administration method, as well as the different cell types used in in vitro studies, does not conclusively establish whether FA prevents CLP formation.
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Wu F, Gu C, Bi Y, Guo Z, Wang Y. Folic acid rescues all-trans retinoic acid-induced anorectal malformations in rats. Birth Defects Res 2020; 112:1850-1856. [PMID: 33459508 DOI: 10.1002/bdr2.1810] [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: 06/21/2020] [Revised: 08/27/2020] [Accepted: 09/09/2020] [Indexed: 01/06/2023]
Abstract
BACKGROUND To investigate whether folic acid (FA) can rescue anorectal malformations (ARMs) induced by all-trans retinoic acid (ATRA) in rats. METHODS Pregnant Sprague-Dawley rats were randomly divided into three groups. In the model group, rats were administered ATRA (110 mg/kg) by gavage on the 10th day of gestation (E10.5). Rats in the rescue group were administered FA (40 mg/kg) by gavage 0.5 and 12 hr after treatment with ATRA. All fetuses were harvested on E20.5 using cesarean section and examined for ARMs. We recorded the weight, body length, tail length, and associated malformations of all the embryos. Hematoxylin and eosin staining was used to analyze the histopathology of the fetuses. RESULTS Control rats did not show any abnormalities. ARMs, tail deformities (less than half of normal length), and neural tube defects were found in 97.98% (97/99), 92.93% (92/99), and 32.32% (32/99) of the rats in the model group, respectively. The incidence of ARMs and tail deformities were 48.57% (51/105) and 35.24% (37/105), respectively, in the rescue rats; no neural tube defects were observed in these rats. The weight, body length, and tail length of the fetal rats in the rescue group were more than those in the model group, but less than those in the control group. CONCLUSION Taken together, FA rescued ARMs induced by ATRA in rats. Thus, FA may reduce the incidence of associated malformations and improve the growth and development of fetal rats.
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Affiliation(s)
- Fang Wu
- Department of Neonatal Gastrointestinal Surgery, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders (Chongqing), China International Science and Technology Cooperation base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Chenchao Gu
- Department of Neonatal Gastrointestinal Surgery, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders (Chongqing), China International Science and Technology Cooperation base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Yang Bi
- Pediatric Research Institute, Chongqing Key Laboratory of Pediatrics, Stem Cell Biology and Therapy Laboratory, Chongqing, P.R. China
| | - Zhenhua Guo
- Department of Neonatal Gastrointestinal Surgery, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders (Chongqing), China International Science and Technology Cooperation base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Yi Wang
- Department of Neonatal Gastrointestinal Surgery, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders (Chongqing), China International Science and Technology Cooperation base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, P.R. China
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9
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Ibrahim OM, El-Deeb NM, Abbas H, Elmasry SM, El-Aassar MR. Alginate based tamoxifen/metal dual core-folate decorated shell: Nanocomposite targeted therapy for breast cancer via ROS-driven NF-κB pathway modulation. Int J Biol Macromol 2020; 146:119-131. [PMID: 31904460 DOI: 10.1016/j.ijbiomac.2019.12.266] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/12/2019] [Accepted: 12/31/2019] [Indexed: 12/24/2022]
Abstract
Breast cancer endocrine resistance prevents unleashing full capabilities of Tamoxifen (TMX), besides TMX off-target side effects on healthy tissue. In this study, we engineered TMX nanocomposite via co-loading it on alginate-based silver nanoparticles and embedding within folic acid-polyethylene glycol surface conjugate. The coating process was done by w/o/w double emulsion method. To confirm the silver nanoparticles formation, UV spectroscopy, XRD and TEM analysis were carried out. TEM results confirmed the core-shell structure of folate targeted nanocomposite with approximate average diameter of 66 nm, the nanocomposite structures were characterized by FTIR, TGA and SEM. By comparing with the non-targeted formula, folate decorated formula had 12-folds lowered IC50 value and 12.5-14-fold higher cancer cells toxic selectivity index. Also, after 4 h treatment, both fluorescence microscopic and flow cytometric analysis indicated higher intracellular accumulation of folic acid conjugated formula on MCF-7 cancer cells than the non-targeted one with 3.44-folds. The breast cancer cytotoxic effects of this metal-endocrine nanocomposite formula could be explained by the induction of reactive oxygen species (ROS), down regulation of survival oncogenic genes (BCL-2 and Survivin) and the accumulation of MCF-7 cells in G2/M phase. All these data confirm the efficiency and efficacy of the formulated nanocomposite as future treatment for breast cancer.
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Affiliation(s)
- Omar M Ibrahim
- Medical Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab City 21934, Alexandria, Egypt; Department of Pharmaceutics, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt; Department of Medicine and Translational Research, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Nehal M El-Deeb
- Biopharmacetical Products Research Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab City 21934, Alexandria, Egypt.
| | - Haidy Abbas
- Department of Pharmaceutics, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
| | - Soha M Elmasry
- Department of Pharmaceutics, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
| | - M R El-Aassar
- Department of Chemistry, College of Science, Jouf University, Sakaka 2014, Saudi Arabia; Polymer Materials Research Department Advanced Technology and New Material Institute, City of Scientific Research and Technological Applications, New Borg El-Arab City 21934, Alexandria, Egypt.
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10
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Gao L, Xu J, Li X, Wang T, Wu W, Cao J. 2,3,7,8-Tetrachlorodibenzo-p-dioxin and TGFβ3-Mediated Mouse Embryonic Palatal Mesenchymal Cells. Dose Response 2019; 17:1559325818786822. [PMID: 30853873 PMCID: PMC6399763 DOI: 10.1177/1559325818786822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 05/01/2018] [Indexed: 12/22/2022] Open
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a well-known environmental teratogenic effector for cleft palate. Transforming growth factor 3 (TGF-β3) is an essential growth factor for palatogenesis. The objective of this study is to clarify the effects of TCDD and TGF-β3 in mouse embryonic palatal mesenchymal (MEPM) cells. The effects of 10 nM TCDD, 10 ng/mL TGF-β3, or a combination of 10 nM TCDD and 10 ng/mL TGF-β3 on MEPM cells were revealed by cell and biological methods. With the increase in TCDD (0.5-10 nM), the expression of TGF-β3 increased, but at TCDD concentrations greater than 10 nM, the expression of TGF-β3 reduced. The viabilities of MEPM cells decreased in the 10 nM TCDD-treated group. But the viabilities increased in the 10 ng/mL TGF-β3-treated group, and the viabilities were intermediate in the group treated with a combination of 10 nM TCDD and 10 ng/mL TGF-β3. This phenomenon was the same as that of the motilities. In addition, we found that the expression of p-Smad2, p-Smad3,and Smad7 were increased by TCDD, TGF-β3, combination of TCDD and TGF-β3, but the expression of Smad4 were decreased by TCDD, TGF-β3, combination of TCDD and TGF-β3. These data revealed that TCDD and TGF-β3 interacted and affected MEPM cells.
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Affiliation(s)
- Liyun Gao
- Department of Toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Jie Xu
- Department of Toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Xiao Li
- Department of Toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Tao Wang
- Department of Toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Weidong Wu
- Department of Toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Jia Cao
- Department of Toxicology, School of Public Health, Xinxiang Medical University, Xinxiang, People's Republic of China
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11
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Maternal folic acid supplementation reduces the severity of cleft palate in Tgf-β 3 null mutant mice. Pediatr Res 2019; 85:566-573. [PMID: 30683931 DOI: 10.1038/s41390-018-0267-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 11/28/2018] [Accepted: 12/12/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND Cleft palate (CP) constitutes the most frequently seen orofacial cleft and is often associated with low folate status. Folate plays an essential role in the human body as a major coenzyme in one-carbon metabolism, including DNA synthesis, repair, and methylation. Whether the administration of isolated folic acid (FA) supplements prevents the CP caused by genetic mutations is unknown, as is its effect on the mechanisms leading to palate fusion. METHODS FA was administered to females from two different strains of transforming growth factor β3 heterozygous mice. Null mutant progeny of these mice exhibit CP in 100% of cases of varying severity. We measured cleft length, height of palatal shelf adhesion, and the number of proliferating mesenchymal cells. Immunohistochemistry was also carried for collagen IV, laminin, fibronectin, cytokeratin-17, and EGF. RESULTS FA supplementation significantly reduced CP severity and improved palatal shelf adhesion in both strains both in vivo and in vitro. Medial edge epithelium proliferation increased, and its differentiation was normalized as indicated by the presence and disposition of collagen IV, laminin, fibronectin, and cytokeratin-17. CONCLUSIONS A maternal FA supplementation reduces the CP appearance by improving the mechanisms leading to palatal shelf adhesion.
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Liyun G, Xu J, Li X, Wang T, Wu W, Cao J. 2,3,7,8-Tetrachlorodibenzo-p-Dioxin and TGF-β3 Mediated-Mouse Embryonic Palatal Mesenchymal Cells. Dose Response 2018; 16:1559325818810637. [PMID: 30479586 PMCID: PMC6247497 DOI: 10.1177/1559325818810637] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 09/26/2018] [Accepted: 10/10/2018] [Indexed: 12/18/2022] Open
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a well-known environmental teratogenic agent for cleft palate. But transforming growth factor β3 (TGF-β3) is an essential growth factor for palatogenesis. This study is to clarify effects of TCDD and TGF-β3 in mouse embryonic palatal mesenchymal (MEPM) cells. The result showed that with increase of TCDD (0.5 nM-10 nM), the expression of TGF-β3 increased, but after 10 nM TCDD, the expression of TGF-β3 reduced. The viabilities of MEPM cells decreased in 10 nM TCDD-treated group. But the viabilities increased in 10 ng/mL TGF-β3-treated group, or the viabilities were between that of them in combination of 10 nM TCDD and 10 ng/mL TGF-β3-treated group. This phenomenon was the same as the motilities. In addition, we found that the expression of phosphorylated Smad2/3 and Smad7 was increased by 10 nM TCDD, 10 ng/mL TGF-β3, or combination of 10 nM TCDD and 10 ng/mL TGF-β3 induced, but the expression of Smad4 was decreased. These data revealed that the TGF-β/Smad signaling pathway affected TCDD and TGF-β3 in MEPM cells.
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Affiliation(s)
- Gao Liyun
- School of Public Health, Xinxiang Medical University, Xinxiang, China.,Cooperative Innovation Center of Molecular Diagnosis and Medical Inspection Technology, Xinxiang, China
| | - Jie Xu
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Xiao Li
- Department of Stomatology, Zhengzhou People's Hospital, Zhengzhou, Henan, China
| | - Tao Wang
- School of Basic Medical Sciences, Jiujiang University, Jiujiang, China
| | - Weidong Wu
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Jia Cao
- School of Public Health, Xinxiang Medical University, Xinxiang, China
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Yuan X, He X, Zhang X, Liu C, Wang C, Qiu L, Pu W, Fu Y. Comparative Study of Folic Acid and α-Naphthoflavone on Reducing TCDD-Induced Cleft Palate in Fetal Mice. Cleft Palate Craniofac J 2017; 54:216-222. [DOI: 10.1597/15-211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Objective To compare the effect of folic acid (FA) and α-naphthoflavone on 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-induced cleft palate in fetal mice. Design Pregnant mice were randomly divided into seven groups. The mice treated with corn oil were used as a negative control. The mice in the other six groups were given a single dose of 28 μg/kg TCDD on GD 10 by gavage. For FA treatment, TCDD-treated mice were also dosed with 5, 10, and 15 mg/kg FA on GD 10, while for α-naphthoflavone treatment, the mice received a single dose of 50 μg/kg or 5 mg/kg α-naphthoflavone on GD 10. Main Outcome Measures Fetal mice palates were imaged using light and scanning electron microscopy on GD 13.5, GD 14.5, and GD 15.5, and cleft palate were recorded on GD 17.5. The expression of guanosine diphosphate dissociation inhibitor (GDI) in fetal mice palate on GD 15.5 was examined by immunohistochemistry. Results TCDD successfully induced cleft palate. Ten mg/ml FA and 5 mg/ml α-naphthoflavone significantly reduced TCDD-induced cleft palate. FA and α-naphthoflavone partly reduced TCDD-induced cleft palate but did not affect the expression of Rho GDI. Conclusions FA and α-naphthoflavone may reduce the generation of reactive oxygen species, inhibit MEE apoptosis through anti-oxidation, and increase filopodia and MEE movement. This may result in restoration of the ultrastructure of the palatal surface to a normal state, leading to the fusion and formation of complete palate in TCDD-treated fetal mice.
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Affiliation(s)
- Xingang Yuan
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing (CSTC2009CA5002), Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Xiaomeng He
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing (CSTC2009CA5002), Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, and Department of Burns and Plastic Surgery, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xuan Zhang
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing (CSTC2009CA5002), Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Cuiping Liu
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing (CSTC2009CA5002), Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Chen Wang
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing (CSTC2009CA5002), Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
| | - Lin Qiu
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing (CSTC2009CA5002), Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, and Department of Burns and Plastic Surgery, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Wei Pu
- Biology Teaching and Research Section of Medical Technology College of Chengdu University of Transitional Chinese Medicine, Chengdu, China
| | - Yuexian Fu
- Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing (CSTC2009CA5002), Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, and Department of Burns and Plastic Surgery, Children's Hospital of Chongqing Medical University, Chongqing, China
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Wang H, Chen W. Dose-Dependent Antiteratogenic Effects of Folic Acid on All-Trans Retinoic Acid-Induced Cleft Palate in Fetal Mice. Cleft Palate Craniofac J 2016; 53:720-726. [PMID: 26575964 DOI: 10.1597/15-170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective Although numerous studies have confirmed that consumption of folic acid (FA) during early pregnancy reduces the risk of oral facial clefts in newborn infants, the optimal dose of FA for reducing this risk remains unknown. We evaluated various doses of FA for their ability to reduce the incidence of all-trans retinoic acid (ATRA)–induced cleft palate in mice. Methods Pregnant C57BL/6J mice were randomly assigned to eight groups dosed with corn oil (control group), ATRA (80 mg/kg), FA (40 mg/kg), or ATRA (80 mg/kg) + FA (2.5 mg, 5 mg, 10 mg, 20 mg, or 40 mg/kg body weight) on gestation day 11 (GD11), after which samples of maternal blood obtained on GD 11 were analyzed for serum folate levels. After receiving the doses, randomly selected mice in each dose group were sacrificed on GDs 13.5, 14.5, and 15.5, and the fetuses were removed for examination by light microscopy and scanning electron microscopy to detect the incidence of cleft palate. Results Among the pregnant mice dosed with ATRA+FA, those dosed with 5 mg/kg FA had fetuses with the lowest incidence of cleft palate. In addition, the eight groups of pregnant mice had significantly different serum folate concentrations ( P < .001). Conclusion When administered to pregnant mice at a specific dose and on the proper gestation day, FA showed an antiteratogenic effect by reducing the incidence of ATRA-induced cleft palate in fetal mice.
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Affiliation(s)
- Huijing Wang
- Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Oral and Maxillofacial Surgery, Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Weiliang Chen
- Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Burg ML, Chai Y, Yao CA, Magee W, Figueiredo JC. Epidemiology, Etiology, and Treatment of Isolated Cleft Palate. Front Physiol 2016; 7:67. [PMID: 26973535 PMCID: PMC4771933 DOI: 10.3389/fphys.2016.00067] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/12/2016] [Indexed: 01/21/2023] Open
Abstract
Isolated cleft palate (CPO) is the rarest form of oral clefting. The incidence of CPO varies substantially by geography from 1.3 to 25.3 per 10,000 live births, with the highest rates in British Columbia, Canada and the lowest rates in Nigeria, Africa. Stratified by ethnicity/race, the highest rates of CPO are observed in non-Hispanic Whites and the lowest in Africans; nevertheless, rates of CPO are consistently higher in females compared to males. Approximately fifty percent of cases born with cleft palate occur as part of a known genetic syndrome or with another malformation (e.g., congenital heart defects) and the other half occur as solitary defects, referred to often as non-syndromic clefts. The etiology of CPO is multifactorial involving genetic and environmental risk factors. Several animal models have yielded insight into the molecular pathways responsible for proper closure of the palate, including the BMP, TGF-β, and SHH signaling pathways. In terms of environmental exposures, only maternal tobacco smoke has been found to be strongly associated with CPO. Some studies have suggested that maternal glucocorticoid exposure may also be important. Clearly, there is a need for larger epidemiologic studies to further investigate both genetic and environmental risk factors and gene-environment interactions. In terms of treatment, there is a need for long-term comprehensive care including surgical, dental and speech pathology. Overall, five main themes emerge as critical in advancing research: (1) monitoring of the occurrence of CPO (capacity building); (2) detailed phenotyping of the severity (biology); (3) understanding of the genetic and environmental risk factors (primary prevention); (4) access to early detection and multidisciplinary treatment (clinical services); and (5) understanding predictors of recurrence and possible interventions among families with a child with CPO (secondary prevention).
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Affiliation(s)
- Madeleine L Burg
- Department of Medicine, Keck School of Medicine, University of Southern California Los Angeles, CA, USA
| | - Yang Chai
- Center for Craniofacial Molecular Biology, Ostrow School of Dentistry, University of Southern California Los Angeles, CA, USA
| | - Caroline A Yao
- Division of Plastic and Reconstructive Surgery, Keck School of Medicine, University of Southern CaliforniaLos Angeles, CA, USA; Division of Plastic and Maxillofacial Surgery, Children's Hospital Los AngelesLos Angeles, CA, USA
| | - William Magee
- Division of Plastic and Reconstructive Surgery, Keck School of Medicine, University of Southern CaliforniaLos Angeles, CA, USA; Division of Plastic and Maxillofacial Surgery, Children's Hospital Los AngelesLos Angeles, CA, USA
| | - Jane C Figueiredo
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Los Angeles, CA, USA
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LaMantia AS, Moody SA, Maynard TM, Karpinski BA, Zohn IE, Mendelowitz D, Lee NH, Popratiloff A. Hard to swallow: Developmental biological insights into pediatric dysphagia. Dev Biol 2015; 409:329-42. [PMID: 26554723 DOI: 10.1016/j.ydbio.2015.09.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/10/2015] [Accepted: 09/15/2015] [Indexed: 12/16/2022]
Abstract
Pediatric dysphagia-feeding and swallowing difficulties that begin at birth, last throughout childhood, and continue into maturity--is one of the most common, least understood complications in children with developmental disorders. We argue that a major cause of pediatric dysphagia is altered hindbrain patterning during pre-natal development. Such changes can compromise craniofacial structures including oropharyngeal muscles and skeletal elements as well as motor and sensory circuits necessary for normal feeding and swallowing. Animal models of developmental disorders that include pediatric dysphagia in their phenotypic spectrum can provide mechanistic insight into pathogenesis of feeding and swallowing difficulties. A fairly common human genetic developmental disorder, DiGeorge/22q11.2 Deletion Syndrome (22q11DS) includes a substantial incidence of pediatric dysphagia in its phenotypic spectrum. Infant mice carrying a parallel deletion to 22q11DS patients have feeding and swallowing difficulties that approximate those seen in pediatric dysphagia. Altered hindbrain patterning, craniofacial malformations, and changes in cranial nerve growth prefigure these difficulties. Thus, in addition to craniofacial and pharyngeal anomalies that arise independently of altered neural development, pediatric dysphagia may result from disrupted hindbrain patterning and its impact on peripheral and central neural circuit development critical for feeding and swallowing. The mechanisms that disrupt hindbrain patterning and circuitry may provide a foundation to develop novel therapeutic approaches for improved clinical management of pediatric dysphagia.
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Affiliation(s)
- Anthony-Samuel LaMantia
- Institute for Neuroscience, The George Washington University School of Medicine and Health Sciences, Washington D.C., USA; Department of Pharmacology and Physiology, George Washington University, School of Medicine and Health Sciences, Washington D.C., USA
| | - Sally A Moody
- Institute for Neuroscience, The George Washington University School of Medicine and Health Sciences, Washington D.C., USA; Department of Anatomy and Regenerative Biology, George Washington University, School of Medicine and Health Sciences, Washington D.C., USA
| | - Thomas M Maynard
- Institute for Neuroscience, The George Washington University School of Medicine and Health Sciences, Washington D.C., USA; Department of Pharmacology and Physiology, George Washington University, School of Medicine and Health Sciences, Washington D.C., USA
| | - Beverly A Karpinski
- Institute for Neuroscience, The George Washington University School of Medicine and Health Sciences, Washington D.C., USA; Department of Pharmacology and Physiology, George Washington University, School of Medicine and Health Sciences, Washington D.C., USA
| | - Irene E Zohn
- Institute for Neuroscience, The George Washington University School of Medicine and Health Sciences, Washington D.C., USA; Center for Neuroscience Research, Children's National Health System, Washington D.C., USA
| | - David Mendelowitz
- Institute for Neuroscience, The George Washington University School of Medicine and Health Sciences, Washington D.C., USA; Department of Pharmacology and Physiology, George Washington University, School of Medicine and Health Sciences, Washington D.C., USA
| | - Norman H Lee
- Institute for Neuroscience, The George Washington University School of Medicine and Health Sciences, Washington D.C., USA; Department of Pharmacology and Physiology, George Washington University, School of Medicine and Health Sciences, Washington D.C., USA
| | - Anastas Popratiloff
- Institute for Neuroscience, The George Washington University School of Medicine and Health Sciences, Washington D.C., USA; Department of Anatomy and Regenerative Biology, George Washington University, School of Medicine and Health Sciences, Washington D.C., USA
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Role of angiogenesis-related genes in cleft lip/palate: review of the literature. Int J Pediatr Otorhinolaryngol 2014; 78:1579-85. [PMID: 25176321 DOI: 10.1016/j.ijporl.2014.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 07/30/2014] [Accepted: 08/01/2014] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Cleft lip and cleft palate (CLP) are the most common congenital craniofacial anomalies. They have a multifactorial etiology and result from an incomplete fusion of the facial buds. Two main mechanisms, acting alone or interacting with each other, were evidenced in this fusion defect responsible for CLP: defective tissue development and/or defective apoptosis in normal or defective tissues. The objective of this work was to study the implication and role of angiogenesis-related genes in the etiology of CL/P. METHODS Our methodological approach included a systematic and thorough analysis of the genes involved in CL/P (syndromic and non-syndromic forms) including previously identified genes but also genes that could potentially be angiogenesis-related (OMIM, Pub Med).We studied the interactions of these different genes and their relationships with potential environmental factors. RESULTS TGFβ, FGA, PDGFc, PDGFRa, FGF, FGFR1, FGFR2 growth factors as well as MMP and TIMP2 proteolytic enzymes are involved in the genesis of CLP (P>L). Furthermore, 18 genes involved in CLP also interact with angiogenesis-related genes. DISCUSSION Even if the main angiogenesis-related genes involved in CLP formation are genes participating in several biological activities and their implication might not be always related to angiogenesis defects, they nevertheless remain an undeniably important research pathway. Furthermore, their interactions with environmental factors make them good candidates in the field of CLP prevention.
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Maestro-de-las-Casas C, Pérez-Miguelsanz J, López-Gordillo Y, Maldonado E, Partearroyo T, Varela-Moreiras G, Martínez-Álvarez C. Maternal folic acid-deficient diet causes congenital malformations in the mouse eye. ACTA ACUST UNITED AC 2014; 97:587-96. [PMID: 24078476 DOI: 10.1002/bdra.23176] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/13/2013] [Accepted: 07/29/2013] [Indexed: 11/09/2022]
Abstract
BACKGROUND The eye is a very complex structure derived from the neural tube, surface ectoderm, and migratory mesenchyme from a neural crest origin. Because structures that evolve from the neural tube may be affected by a folate/folic acid (FA) deficiency, the aim of this work was to investigate whether a maternal folic acid-deficient diet may cause developmental alterations in the mouse eye. METHODS Female C57BL/6J mice (8 weeks old) were assigned into two different folic acid groups for periods ranging between 2 and 16 weeks. Animals were killed at gestation day 17. Hepatic folate was analyzed, and the eyes from 287 fetuses were macroscopically studied, sectioned and immunolabeled with anti-transforming growth factor (TGF)-β2 and anti-TGF-βRII. RESULTS Mice exposed to a FA-deficient diet exhibited numerous eye macroscopic anomalies, such as anophthalmia and microphthalmia. Microscopically, the eye was the most affected organ (43.7% of the fetuses). The highest incidence of malformations occurred from the 8th week onward. A statistically significant linear association between the number of maternal weeks on the FA-deficient diet and embryonic microscopic eye malformations was observed. The optic cup derivatives and structures forming the eye anterior segment showed severe abnormalities. In addition, TGF-β2 and TGF-βRII expression in the eye was also altered. CONCLUSION This study suggests that an adequate folic acid/folate status plays a key role in the formation of ocular tissues and structures, whereas a vitamin deficiency is negatively associated with a normal eye development even after a short-term exposure.
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Affiliation(s)
- Carmen Maestro-de-las-Casas
- Departamento de Anatomía y Embriología Humana I. Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
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Zhu Y, Zhu Y, Yin H, Zhou H, Wan X, Zhu J, Zhang T. All-trans-retinoic acid induces short forelimb malformation during mouse embryo development by inhibiting chondrocyte maturation rather than by evoking excess cell death. Toxicol Lett 2012; 211:172-86. [DOI: 10.1016/j.toxlet.2012.03.801] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 03/22/2012] [Accepted: 03/25/2012] [Indexed: 02/07/2023]
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