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Xu X, Wang J, Xia Y, Yin Y, Zhu T, Chen F, Hai C. Autophagy, a double-edged sword for oral tissue regeneration. J Adv Res 2024; 59:141-159. [PMID: 37356803 PMCID: PMC11081970 DOI: 10.1016/j.jare.2023.06.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/10/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023] Open
Abstract
BACKGROUND Oral health is of fundamental importance to maintain systemic health in humans. Stem cell-based oral tissue regeneration is a promising strategy to achieve the recovery of impaired oral tissue. As a highly conserved process of lysosomal degradation, autophagy induction regulates stem cell function physiologically and pathologically. Autophagy activation can serve as a cytoprotective mechanism in stressful environments, while insufficient or over-activation may also lead to cell function dysregulation and cell death. AIM OF REVIEW This review focuses on the effects of autophagy on stem cell function and oral tissue regeneration, with particular emphasis on diverse roles of autophagy in different oral tissues, including periodontal tissue, bone tissue, dentin pulp tissue, oral mucosa, salivary gland, maxillofacial muscle, temporomandibular joint, etc. Additionally, this review introduces the molecular mechanisms involved in autophagy during the regeneration of different parts of oral tissue, and how autophagy can be regulated by small molecule drugs, biomaterials, exosomes/RNAs or other specific treatments. Finally, this review discusses new perspectives for autophagy manipulation and oral tissue regeneration. KEY SCIENTIFIC CONCEPTS OF REVIEW Overall, this review emphasizes the contribution of autophagy to oral tissue regeneration and highlights the possible approaches for regulating autophagy to promote the regeneration of human oral tissue.
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Affiliation(s)
- Xinyue Xu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China; Shaanxi Key Lab of Free Radical Biology and Medicine, Fourth Military Medical University, Xi'an, PR China
| | - Jia Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China
| | - Yunlong Xia
- Shaanxi Key Lab of Free Radical Biology and Medicine, Fourth Military Medical University, Xi'an, PR China; Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Yuan Yin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China
| | - Tianxiao Zhu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China; Shaanxi Key Lab of Free Radical Biology and Medicine, Fourth Military Medical University, Xi'an, PR China
| | - Faming Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, PR China
| | - Chunxu Hai
- Shaanxi Key Lab of Free Radical Biology and Medicine, Fourth Military Medical University, Xi'an, PR China.
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Pimenta RMN, Dos Reis-Prado AH, de Castro Oliveira S, Goto J, Cosme-Silva L, Cintra LTA, Benetti F. Effects of diabetes mellitus on dental pulp: A systematic review of in vivo and in vitro studies. Oral Dis 2024; 30:100-115. [PMID: 35657117 DOI: 10.1111/odi.14267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 05/11/2022] [Accepted: 05/30/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVES This systematic review (PROSPERO CRD42021227711) evaluated the influence of diabetes mellitus (DM) on the response of the pulp tissue and in the pulp cells behaviour. MATERIALS AND METHODS Searches in PubMed/MEDLINE, Embase, Web of Science and OpenGrey were performed until March 2022. Studies evaluating the effects of DM in the pulp tissue inflammation and in the cell behaviour were included, followed by risk of bias assessment (Methodological Index for Non-Randomized Studies and SYRCLE's RoB tools). The meta-analysis was unfeasible, and a narrative synthesis for each outcome was provided. RESULTS Of the 615 studies, 21 were eligible, mainly with in vivo analysis (16 studies). The pulp inflammation (10 studies) was analysed mainly by haematoxylin-eosin stain; DM increased pulp inflammation/degeneration in 9 studies, especially after dental procedures. The cell viability (5 studies) was analysed mostly using MTT assay; DM and glycating agents decreased cellular viability in 3 studies. DM reduced collagen in all of three studies. There were controversial results regarding mineralization; however, increased alkaline phosphatase was reported in three of four studies. CONCLUSIONS DM seems to increase inflammation/degeneration and mineralization in the pulp tissue while reducing cell proliferation. Further analyses in human pulp are important to provide stronger evidence.
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Affiliation(s)
- Rafaella Milla Nunes Pimenta
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | | | - Sabrina de Castro Oliveira
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Juliana Goto
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
| | - Leopoldo Cosme-Silva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Alagoas (UFAL), Maceió, Brazil
| | | | - Francine Benetti
- Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
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Tao S, Yang T, Zhou JN, Zhang Q. Impaired pulp healing associated with underlying disorders in the dental pulp of rats with type 2 diabetes. J Dent Sci 2024; 19:310-320. [PMID: 38303798 PMCID: PMC10829554 DOI: 10.1016/j.jds.2023.03.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 03/29/2023] [Indexed: 02/03/2024] Open
Abstract
Background/purpose Type 2 diabetes mellitus (T2DM), characterized by hyperglycemia, is a systematic disease affecting structure and healing ability in various tissues. This study aimed to investigate whether T2DM could impair the dental pulp healing and cause underlying pathological changes in the dental pulp before an injury occurred. Materials and methods Goto-Kakizaki rats were used as T2DM model animals and performed with direct pulp capping procedures on the first maxillary molars. The molars at 1, 2, 4 weeks after operation and non-injured molars were examined using hematoxylin and eosin staining, immunohistochemical staining, immunofluorescence staining, and Masson's trichrome staining. The fresh dental pulp of maxillary incisors was collected for transmission electron microscopy and glucose content evaluation. Results The T2DM rats showed deficient reparative dentin formation compared with the healthy rats. Before the occurrence of an injury, underlying pathological changes of major components in the pulp tissue were observed in T2DM rats, including vasculopathy; collagen abnormalities; decreased proliferation, decreased odontogenetic differentiation and damaged ultrastructure of dental pulp cells. High glucose content and advanced glycation end products accumulation were further found in the pulp tissue in T2DM rats. Conclusion T2DM can impede pulp healing process in rats, which is associated with underlying pathological changes in the non-injured pulp caused by the advanced glycation end products accumulation under high-glucose conditions.
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Affiliation(s)
- Shuo Tao
- Department of Endodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai, China
- Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
| | - Ting Yang
- Department of Endodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai, China
- Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
| | - Jia-Ni Zhou
- Department of Endodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai, China
- Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
| | - Qi Zhang
- Department of Endodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai, China
- Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
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4
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Tao S, Yang T, Yin Y, Zhang Q. Mitochondrial reactive oxygen species promote mitochondrial damage in high glucose-induced dysfunction and apoptosis of human dental pulp cells. J Dent Sci 2024; 19:292-302. [PMID: 38303803 PMCID: PMC10829553 DOI: 10.1016/j.jds.2023.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/10/2023] [Indexed: 02/03/2024] Open
Abstract
Background/purpose High glucose (HG)-induced aberrant proliferation, apoptosis and odontoblastic differentiation of dental pulp cells (DPCs) have been implicated in the pathogenesis of impaired diabetic pulp healing; however, the underlying mechanism remains unclear. This study aimed to investigate the role of mitochondrial reactive oxygen species (mtROS) and mitochondria in HG-induced dysfunction and apoptosis of DPCs. Materials and methods Human DPCs (hDPCs) were cultured in a low-glucose, high-glucose, mannitol, and MitoTEMPO medium in vitro. Methylthiazol tetrazolium assay, Annexin V-FITC/PI staining and scratch-wound assay were used to analyze cell proliferation, apoptosis and migration, respectively. Alkaline phosphatase staining and alizarin red S staining were used to evaluate cell differentiation. DCF-DA staining, MitoSOX staining, MitoTracker Red staining, JC-1 staining, and adenosine triphosphate (ATP) kit assay were performed to investigate total ROS and mtROS generation, mitochondrial density, mitochondrial membrane potential (MMP), and ATP synthesis, respectively. Quantitative PCR assay was performed to detect the mRNA expression of mitochondrial biogenesis- and dynamics-related markers. Transmission electron microscopy was used to observe the mitochondrial ultrastructure. Results HG augmented the production of total ROS and mtROS, and triggered mitochondrial damage in hDPCs, as reflected by decreased mitochondrial density, depolarized MMP, reduced ATP synthesis, altered mRNA expression of mitochondrial biogenesis- and dynamics-related markers, and abnormal mitochondrial ultrastructure. Supplementation of MitoTEMPO alleviated the mitochondrial damage and reversed the aberrant proliferation, apoptosis, migration and odontoblastic differentiation of HG-stimulated hDPCs. Conclusion HG triggers mitochondrial damage via augmenting mtROS generation, resulting in the inhibited proliferation, migration, and odontoblastic differentiation of hDPCs and enhanced their apoptosis.
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Affiliation(s)
- Shuo Tao
- Department of Endodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai, China
- Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
| | - Ting Yang
- Department of Endodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai, China
- Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
| | - Yue Yin
- Department of Endodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai, China
- Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
| | - Qi Zhang
- Department of Endodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai, China
- Shanghai Engineering Research Centre of Tooth Restoration and Regeneration, Shanghai, China
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Zhou P, Feng H, Qin W, Li Q. KRT17 from skin cells with high glucose stimulation promotes keratinocytes proliferation and migration. Front Endocrinol (Lausanne) 2023; 14:1237048. [PMID: 37929023 PMCID: PMC10622786 DOI: 10.3389/fendo.2023.1237048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 09/19/2023] [Indexed: 11/07/2023] Open
Abstract
Impaired diabetic wound healing is an important issue in diabetic complications. Proliferation and migration of keratinocytes are major processes of skin wound repair after injury. However, hyperkeratosis can affect the speed of wound healing. Based on the results of preliminary experiments on increased KRT17 expression after high glucose stimulation of human skin tissue cells, a cell model of human immortalized keratinocyte (HaCaT) stimulation with different concentrations of KRT17 was established in vitro, and the promotion in cell proliferation and migration were discovered. KRT17 silencing promoted diabetic wound healing in the db/db diabetic wound model. Transcriptome sequencing (RNA-seq) was performed on HaCaT cells after KRT17 stimulation, and analysis showed significant enrichment in the PI3K-AKT signaling pathway, in which the regulation of cell c-MYB mRNA, a key molecule regulating cell proliferation and migration, was significantly upregulated. In vitro assays showed increased c-MYB expression and enhanced pAKT activity after HaCaT cell stimulation by KRT17. We speculate that KRT17 is upregulated under high glucose and promotes keratinocyte proliferation and migration caused hyperkeratosis, through the c-MYB/PI3K-AKT pathway, contributing to delayed wound healing.
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Affiliation(s)
- Peng Zhou
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haijun Feng
- Department of Vascular Surgery, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenhui Qin
- Department of Endocrinology, Jingshan Union Hospital of Huazhong University of Science and Technology, Jingshan, China
| | - Qin Li
- Department of Vascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Weng J, Yang S, Shen J, Liu H, Xu Y, Hao D, Wang S. Molecular dynamics simulation reveals DNA-specific recognition mechanism via c-Myb in pseudo-palindromic consensus of mim-1 promoter. J Zhejiang Univ Sci B 2023; 24:883-895. [PMID: 37752090 PMCID: PMC10522569 DOI: 10.1631/jzus.b2200634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/07/2023] [Indexed: 09/28/2023]
Abstract
This study aims to gain insight into the DNA-specific recognition mechanism of c-Myb transcription factor during the regulation of cell early differentiation and proliferation. Therefore, we chose the chicken myeloid gene, mitochondrial import protein 1 (mim-1), as a target to study the binding specificity between potential dual-Myb-binding sites. The c-Myb-binding site in mim-1 is a pseudo-palindromic sequence AACGGTT, which contains two AACNG consensuses. Simulation studies in different biological scenarios revealed that c-Myb binding with mim-1 in the forward strand (complex F) ismore stable than that inthereverse strand (complex R). The principal component analysis (PCA) dynamics trajectory analyses suggested an opening motion of the recognition helices of R2 and R3 (R2R3), resulting in the dissociation of DNA from c-Myb in complex R at 330 K, triggered by the reduced electrostatic potential on the surface of R2R3. Furthermore, the DNA confirmation and hydrogen-bond interaction analyses indicated that the major groove width of DNA increased in complex R, which affected on the hydrogen-bond formation ability between R2R3 and DNA, and directly resulted in the dissociation of DNA from R2R3. The steered molecular dynamics (SMD) simulation studies also suggested that the electrostatic potential, major groove width, and hydrogen bonds made major contribution to the DNA-specific recognition. In vitro trials confirmed the simulation results that c-Myb specifically bound to mim-1 in the forward strand. This study indicates that the three-dimensional (3D) structure features play an important role in the DNA-specific recognition mechanism by c-Myb besides the AACNG consensuses, which is beneficial to understanding the cell early differentiation and proliferation regulated by c-Myb, as well as the prediction of novel c-Myb-binding motifs in tumorigenesis.
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Affiliation(s)
- Jinru Weng
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou 310000, China
| | - Shuo Yang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun 130021, China
| | - Jinkang Shen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou 310000, China
| | - Hongsen Liu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou 310000, China
| | - Yuzi Xu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou 310000, China
| | - Dongyun Hao
- Institute of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences (JAAS), Changchun 130033, China.
| | - Shan Wang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou 310000, China.
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7
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Nijakowski K, Ortarzewska M, Jankowski J, Lehmann A, Surdacka A. The Role of Cellular Metabolism in Maintaining the Function of the Dentine-Pulp Complex: A Narrative Review. Metabolites 2023; 13:metabo13040520. [PMID: 37110177 PMCID: PMC10143950 DOI: 10.3390/metabo13040520] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/04/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
The cellular metabolic processes ensure the physiological integrity of the dentine-pulp complex. Odontoblasts and odontoblast-like cells are responsible for the defence mechanisms in the form of tertiary dentine formation. In turn, the main defence reaction of the pulp is the development of inflammation, during which the metabolic and signalling pathways of the cells are significantly altered. The selected dental procedures, such as orthodontic treatment, resin infiltration, resin restorations or dental bleaching, can impact the cellular metabolism in the dental pulp. Among systemic metabolic diseases, diabetes mellitus causes the most consequences for the cellular metabolism of the dentine-pulp complex. Similarly, ageing processes present a proven effect on the metabolic functioning of the odontoblasts and the pulp cells. In the literature, several potential metabolic mediators demonstrating anti-inflammatory properties on inflamed dental pulp are mentioned. Moreover, the pulp stem cells exhibit the regenerative potential essential for maintaining the function of the dentine-pulp complex.
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Affiliation(s)
- Kacper Nijakowski
- Department of Conservative Dentistry and Endodontics, Poznan University of Medical Sciences, 60-812 Poznan, Poland
| | - Martyna Ortarzewska
- Department of Conservative Dentistry and Endodontics, Poznan University of Medical Sciences, 60-812 Poznan, Poland
| | - Jakub Jankowski
- Student's Scientific Group in the Department of Conservative Dentistry and Endodontics, Poznan University of Medical Sciences, 60-812 Poznan, Poland
| | - Anna Lehmann
- Department of Conservative Dentistry and Endodontics, Poznan University of Medical Sciences, 60-812 Poznan, Poland
| | - Anna Surdacka
- Department of Conservative Dentistry and Endodontics, Poznan University of Medical Sciences, 60-812 Poznan, Poland
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8
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Akt-GSK3β-mPTP pathway regulates the mitochondrial dysfunction contributing to odontoblasts apoptosis induced by glucose oxidative stress. Cell Death Dis 2022; 8:168. [PMID: 35383148 PMCID: PMC8983683 DOI: 10.1038/s41420-022-00981-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 02/07/2023]
Abstract
Diabetes Mellitus can cause dental pulp cells apoptosis by oxidative stress, and affect the integrity and function of dental pulp tissue. Mitochondria are the main attack targets of oxidative stress and have a critical role in apoptosis. However, whether mitochondria are involved in dental pulp damage caused by diabetes mellitus remains unclear. This study aimed to investigate the role of mitochondria in the apoptosis of odontoblast-like cell line (mDPC6T) induced by glucose oxidative stress, and to explore its possible mechanism. We established an oxidative stress model in vitro using glucose oxidase/glucose to simulate the pathological state under diabetic conditions. We found that the opening of mitochondrial permeability transition pore (mPTP) contributed to the apoptosis of mDPC6T treated with glucose oxidase, as evidenced by enhanced mitochondrial reactive oxygen species (mtROS) and intracellular Ca2+ disorder, significantly reduced mitochondrial membrane potential (MMP) and ATP production. Antioxidant N-acetylcysteine (NAC) or Cyclosporine A (mPTP inhibitor) blocked the mPTP opening, which significantly attenuated mitochondrial dysfunction and apoptosis induced by glucose oxidative stress. In addition, we found that glucose oxidative stress stimulated mPTP opening may through inhibition of Akt-GSK3β pathway. This study provides a new insight into the mitochondrial mechanism underlying diabetes-associated odontoblast-like cell apoptosis, laying a foundation for the prevention and treatment of diabetes-associated pulp injury.
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9
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c-Myb protects cochlear hair cells from cisplatin-induced damage via the PI3K/Akt signaling pathway. Cell Death Dis 2022; 8:78. [PMID: 35210433 PMCID: PMC8873213 DOI: 10.1038/s41420-022-00879-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/27/2022] [Accepted: 02/09/2022] [Indexed: 12/31/2022]
Abstract
The transcription factor c-Myb is vital for cell survival, proliferation, differentiation, and apoptosis. We have previously reported that c-Myb knockdown exacerbates neomycin-induced damage to cochlea cells. However, the function and regulation of c-Myb in the mammalian inner ear remains unclear. Here, we first found that the expression of c-Myb in cochlear HCs was downregulated after cisplatin damage in vivo. Next, to investigate the role of c-Myb in HCs treated with cisplatin, the recombinant virus AAV-ie-CAG-Myb-HA (AAV-c-Myb) that overexpresses c-Myb was constructed and transfected into HCs. The protein expression of c-Myb was effectively up-regulated in cultured cochlear HCs after the virus transfection, which increased cochlear HC viability, decreased HC apoptosis and reduced intracellular reactive oxygen species (ROS) levels after cisplatin injury in vitro. The overexpression of c-Myb in HCs after AAV-c-Myb transfection in vivo also promoted HC survival, improved the hearing function of mice and reduced HC apoptosis after cisplatin injury. Furthermore, c-Myb-HC conditional knockout mice (Prestin; c-Myb-cKO) in which c-Myb expression is downregulated only in cochlear OHCs were generated and the cisplatin-induced HCs loss, apoptosis and hearing deficit were all exacerbated in Prestin; c-Myb-cKO mice treated with cisplatin in vivo. Finally, mechanistic studies showed that upregulation of the PI3K/Akt signaling pathway by c-Myb contributed to the increased HC survival after cisplatin exposure in vitro. The findings from this work suggest that c-Myb might serve as a new target for the prevention of cisplatin-induced HC damage and hearing loss.
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Abstract
In diabetic patients, diabetic retinopathy (DR) is the leading cause of blindness and seriously affects the quality of life. However, current treatment methods of DR are not satisfactory. Advances have been made in understanding abnormal protein interactions and signaling pathways in DR pathology, but little is known about epigenetic regulation. Non-coding RNAs, such as circular RNAs (circRNAs), have been shown to be associated with DR. In this review, we summarized the function of circRNAs and indicated their roles in the pathogenesis of DR, which may provide new therapeutic targets for clinical treatment.
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Affiliation(s)
- Huan-Ran Zhou
- Department of Endocrinology, the First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hong-Yu Kuang
- Department of Endocrinology, the First Affiliated Hospital of Harbin Medical University, Harbin, China.
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11
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Yang S, Fan W, Li Y, Liu Q, He H, Huang F. Autophagy in tooth: Physiology, disease and therapeutic implication. Cell Biochem Funct 2021; 39:702-712. [PMID: 33929054 DOI: 10.1002/cbf.3636] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 01/07/2023]
Abstract
Autophagy is an evolutionarily conserved cellular process, in which damaged organelles and proteins are engulfed in autophagic vesicles and subsequently fuse with lysosomes for degradation. Autophagy is widely involved in different physiologic or pathologic processes in human. Accumulating evidence indicates that autophagy operates as a critical quality control mechanism to maintain pulp homeostasis and structural integrity of the dentin-pulp complex. Autophagy is activated during stresses and is involved in the pathogenesis of pulpitis and periapical infection. Recent discoveries have also provided intriguing insights into the roles of autophagy in tooth development, pulp aging and stress adaptation. In this review, we provide an update on the multifaceted functions of autophagy in physiology and pathophysiology of tooth. We also discuss the therapeutic implications of autophagy modulation in diseases and the regeneration of dentin-pulp complex.
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Affiliation(s)
- Shengyan Yang
- Department of Pediatric Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Wenguo Fan
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Yaoyin Li
- Department of Pediatric Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Qing Liu
- Department of Pediatric Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Hongwen He
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China.,Department of Oral Anatomy and Physiology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Fang Huang
- Department of Pediatric Dentistry, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
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12
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Long F, Lin Z, Li L, Ma M, Lu Z, Jing L, Li X, Lin C. Comprehensive landscape and future perspectives of circular RNAs in colorectal cancer. Mol Cancer 2021; 20:26. [PMID: 33536039 PMCID: PMC7856739 DOI: 10.1186/s12943-021-01318-6] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 01/19/2021] [Indexed: 12/14/2022] Open
Abstract
Colorectal cancer (CRC) is a common hereditary tumor that is often fatal. Its pathogenesis involves multiple genes, including circular RNAs (circRNAs). Notably, circRNAs constitute a new class of noncoding RNAs (ncRNAs) with a covalently closed loop structure and have been characterized as stable, conserved molecules that are abundantly expressed in tissue/development-specific patterns in eukaryotes. Based on accumulating evidence, circRNAs are aberrantly expressed in CRC tissues, cells, exosomes, and blood from patients with CRC. Moreover, numerous circRNAs have been identified as either oncogenes or tumor suppressors that mediate tumorigenesis, metastasis and chemoradiation resistance in CRC. Although the regulatory mechanisms of circRNA biogenesis and functions remain fairly elusive, interesting results have been obtained in studies investigating CRC. In particular, the expression of circRNAs in CRC is comprehensively modulated by multiple factors, such as splicing factors, transcription factors, specific enzymes and cis-acting elements. More importantly, circRNAs exert pivotal effects on CRC through various mechanisms, including acting as miRNA sponges or decoys, interacting with RNA binding proteins, and even translating functional peptides. Finally, circRNAs may serve as promising diagnostic and prognostic biomarkers and potential therapeutic targets in the clinical practice of CRC. In this review, we discuss the dysregulation, functions and clinical significance of circRNAs in CRC and further discuss the molecular mechanisms by which circRNAs exert their functions and how their expression is regulated. Based on this review, we hope to reveal the functions of circRNAs in the initiation and progression of cancer and highlight the future perspectives on strategies targeting circRNAs in cancer research.
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Affiliation(s)
- Fei Long
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of The University of South China, Hengyang, Hunan, 421001, P.R. China
| | - Zhi Lin
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P.R. China
| | - Liang Li
- Class 25 Grade 2016, The Five-Year Program in Clinical Medicine, School of Medicine, University of South China, Hengyang, Hunan, 421001, P.R. China
| | - Min Ma
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Zhixing Lu
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Liang Jing
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China
| | - Xiaorong Li
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China.
| | - Changwei Lin
- Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, P.R. China.
- School of Life Sciences, Central South University, Changsha, 410078, Hunan, China.
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13
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Takanche JS, Kim JE, Kim JS, Yi HK. Guided bone regeneration with a gelatin layer and adenoviral delivery of c-myb enhances bone healing in rat tibia. Regen Med 2020; 15:1877-1890. [PMID: 32893751 DOI: 10.2217/rme-2019-0054] [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] [Indexed: 11/21/2022] Open
Abstract
Aim: Bone healing becomes problematic during certain states, such as trauma. This study verifies whether the application of c-myb with gelatin promotes bone healing during bone injuries. Materials & methods: A biodegradable membrane was modified with adenoviral vector c-myb (Ad/c-myb) and gelatin and applied in the bone injury site of rat tibia. Results: c-myb enhanced osteogenic differentiation and mineralization in bone marrow stromal cells after induction with osteogenic media. In vivo examination of rat tibia after application of the biodegradable membrane with Ad/c-myb and a gelatin layer demonstrated increased bone volume, bone mineral density, new bone formation and osteogenic molecules, compared with Ad/LacZ. Conclusion: c-myb has the potential to assist bone healing and may be applicable to the treatment of bone during injury.
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Affiliation(s)
- Jyoti Shrestha Takanche
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University, Jeonju, Korea
| | - Ji-Eun Kim
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University, Jeonju, Korea
| | - Jeong-Seok Kim
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University, Jeonju, Korea
| | - Ho-Keun Yi
- Departments of Oral Biochemistry, Institute of Oral Bioscience, School of Dentistry, Jeonbuk National University, Jeonju, Korea
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14
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Novel Polymeric Nanocarriers Reduced Zinc and Doxycycline Toxicity in the Nematode Caenorhabditis elegans. Antioxidants (Basel) 2019; 8:antiox8110550. [PMID: 31739428 PMCID: PMC6912483 DOI: 10.3390/antiox8110550] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/07/2019] [Accepted: 11/12/2019] [Indexed: 02/06/2023] Open
Abstract
The objective was to evaluate the toxicity of zinc- and doxycycline-loaded polymeric nanoparticles (NPs) using Caenorhabditis elegans as a model organism. These NPs are composed of ethylene glycol dimethacrylate, 2-hydroxyethyl methacrylate and methacrylic acid. NPs were loaded with doxycycline (D-NPs) and zinc (Zn-NPs) by chemical adsorption, and loading efficacy was demonstrated. Worm death rate in a concentration-response curve basis was calculated for lethality. Metabolism was evaluated through pharyngeal pumping assay. Body length measurements, brood size and egg lays were used to gauge growth, reproduction and fertility respectively. Intracellular hydrogen peroxide levels were determined to assess the reactive oxygen species production. One-way ANOVA and Bonferroni were used for comparisons (p < 0.05). Tested NPs at the highest dosage did not affect lethality or worm metabolism, expressed in terms of death rate and pharyngeal pumping per minute, respectively. Zn-NPs slightly increased worm growth. The concentration of the intracellular hydrogen peroxide levels was the lowest in the D-NPs group. The distinct NPs and concentrations employed were shown to be non-toxic for in situ administration of zinc and doxycycline, reducing the harmful effects of these compounds.
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15
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Li X, Hu L, Ma L, Chang S, Wang W, Feng Y, Xu Y, Hu J, Zhang C, Wang S. Severe periodontitis may influence cementum and dental pulp through inflammation, oxidative stress, and apoptosis. J Periodontol 2019; 90:1297-1306. [DOI: 10.1002/jper.18-0604] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 02/10/2019] [Accepted: 02/19/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Xiangchun Li
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
- Department of Stomatologythe First Hospital of Qinhuangdao Hebei P. R. China
| | - Liang Hu
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
| | - Linsha Ma
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
| | - Shimin Chang
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
| | - Weili Wang
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
| | - Yuanyong Feng
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
| | - Yipu Xu
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
| | - Jinchao Hu
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
| | - Chunmei Zhang
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
| | - Songlin Wang
- Beijing Key Laboratory of Tooth Regeneration and Function ReconstructionCapital Medical University School of Stomatology Beijing P. R. China
- Department of Biochemistry and Molecular BiologyCapital Medical University School of Basic Medical Sciences Beijing P. R. China
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16
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Zeng K, Chen X, Xu M, Liu X, Hu X, Xu T, Sun H, Pan Y, He B, Wang S. CircHIPK3 promotes colorectal cancer growth and metastasis by sponging miR-7. Cell Death Dis 2018; 9:417. [PMID: 29549306 PMCID: PMC5856798 DOI: 10.1038/s41419-018-0454-8] [Citation(s) in RCA: 471] [Impact Index Per Article: 78.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/26/2018] [Accepted: 03/01/2018] [Indexed: 02/07/2023]
Abstract
Mounting evidences indicate that circular RNAs (circRNAs) have a vital role in human diseases, especially cancers. More recently, circHIPK3, a particularly abundant circRNA, was proposed to be involved in tumorigenesis. However, its role in colorectal cancer (CRC) has not been explored. In this study, we found circHIPK3 was significantly upregulated in CRC tissues and cell lines, at least in part, due to c-Myb overexpression and positively correlated with metastasis and advanced clinical stage. Moreover, Cox multivariate survival analysis showed that high-level expression of circHIPK3 was an independent prognostic factor of poor overall survival (OS) in CRC (hazard ratio [HR] = 2.75, 95% confidence interval [CI] 1.74-6.51, p = 0.009). Functionally, knockdown of circHIPK3 markedly inhibited CRC cells proliferation, migration, invasion, and induced apoptosis in vitro and suppressed CRC growth and metastasis in vivo. Mechanistically, by using biotinylated-circHIPK3 probe to perform RNA pull-down assay in CRC cells, we identified miR-7 was the only one microRNA that was abundantly pulled down by circHIPK3 in both HCT116 and HT29 cells and these interactions were also confirmed by biotinylated miR-7 pull-down and dual-luciferase reporter assays. Overexpression of miR-7 mimicked the effect of circHIPK3 knockdown on CRC cells proliferation, migration, invasion, and apoptosis. Furthermore, ectopic expression of circHIPK3 effectively reversed miR-7-induced attenuation of malignant phenotypes of CRC cells by increasing the expression levels of miR-7 targeting proto-oncogenes (FAK, IGF1R, EGFR, YY1). Remarkably, the combination of circHIPK3 silencing and miR-7 overexpression gave a better effect on tumor suppression both in vitro and in vivo than did circHIPK3 knockdown or miR-7 overexpression alone. Taken together, our data indicate that circHIPK3 may have considerable potential as a prognostic biomarker in CRC, and support the notion that therapeutic targeting of the c-Myb/circHIPK3/miR-7 axis may be a promising treatment approach for CRC patients.
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Affiliation(s)
- Kaixuan Zeng
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
- School of Medicine, Southeast University, 210009, Nanjing, China
| | - Xiaoxiang Chen
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
- School of Medicine, Southeast University, 210009, Nanjing, China
| | - Mu Xu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
| | - Xiangxiang Liu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
| | - Xiuxiu Hu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
| | - Tao Xu
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
| | - Huiling Sun
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
| | - Yuqin Pan
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
| | - Bangshun He
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China
| | - Shukui Wang
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, 210006, Nanjing, China.
- School of Medicine, Southeast University, 210009, Nanjing, China.
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17
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Hao S, Yu J, He W, Huang Q, Zhao Y, Liang B, Zhang S, Wen Z, Dong S, Rao J, Liao W, Shi M. Cysteine Dioxygenase 1 Mediates Erastin-Induced Ferroptosis in Human Gastric Cancer Cells. Neoplasia 2017; 19:1022-1032. [PMID: 29144989 PMCID: PMC5686465 DOI: 10.1016/j.neo.2017.10.005] [Citation(s) in RCA: 187] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/20/2017] [Accepted: 10/23/2017] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Ferroptosis is a recently discovered form of iron-dependent nonapoptotic cell death. It is characterized by loss of the activity of the lipid repair enzyme, glutathione peroxidase 4 (GPX4), and accumulation of lethal reactive lipid oxygen species. However, we still know relatively little about ferroptosis and its molecular mechanism in gastric cancer (GC) cells. Here, we demonstrate that erastin, a classic inducer of ferroptosis, induces this form of cell death in GC cells and that cysteine dioxygenase 1 (CDO1) plays an important role in this process. METHODS We performed quantitative real-time polymerase chain reaction, Western blotting, cell viability assay, reactive oxygen species (ROS) assay, glutathione assay, lipid peroxidation assay, RNAi and gene transfection, immunofluorescent staining, dual-luciferase reporter assay, transmission electron microscopy, and chromatin immunoprecipitation assay to study the regulation of ferroptosis in GC cells. Mouse xenograft assay was used to figure out the mechanism in vivo. RESULTS Silencing CDO1 inhibited erastin-induced ferroptosis in GC cells both in vitro and in vivo. Suppression of CDO1 restored cellular GSH levels, prevented ROS generation, and reduced malondialdehyde, one of the end products of lipid peroxidation. In addition, silencing COO1 maintained mitochondrial morphologic stability in erastin-treated cells. Mechanistically, c-Myb transcriptionally regulated CDO1, and inhibition of CDO1 expression upregulated GPX4 expression. CONCLUSIONS Our findings give a better understanding of ferroptosis and its molecular mechanism in GC cells, gaining insight into ferroptosis-mediated cancer treatment.
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Affiliation(s)
- Shihui Hao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Jiang Yu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Wanming He
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Qiong Huang
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Yang Zhao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Bishan Liang
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Shuyi Zhang
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Zhaowei Wen
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Shumin Dong
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Jinjun Rao
- Key Laboratory of New Drug Screening of Guangdong Province, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Wangjun Liao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Min Shi
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China.
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18
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Shan K, Liu C, Liu BH, Chen X, Dong R, Liu X, Zhang YY, Liu B, Zhang SJ, Wang JJ, Zhang SH, Wu JH, Zhao C, Yan B. Circular Noncoding RNA HIPK3 Mediates Retinal Vascular Dysfunction in Diabetes Mellitus. Circulation 2017; 136:1629-1642. [PMID: 28860123 DOI: 10.1161/circulationaha.117.029004] [Citation(s) in RCA: 386] [Impact Index Per Article: 55.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Accepted: 08/28/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Kun Shan
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Chang Liu
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Bai-Hui Liu
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Xue Chen
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Rui Dong
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Xin Liu
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Yang-Yang Zhang
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Ban Liu
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Shu-Jie Zhang
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Jia-Jian Wang
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Sheng-Hai Zhang
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Ji-Hong Wu
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Chen Zhao
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
| | - Biao Yan
- From Eye Institute, Eye and ENT Hospital, Shanghai Medical College, Fudan University, China (K.S., C.L., X.L., S.-J.Z., J.-J.W., S.-H.Z., J.-H.W., C.Z., B.Y.); Fourth School of Clinical Medicine, Nanjing Medical University, China (C.L.); Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, China (B.-H.L., R.D.); Department of Ophthalmology, First Affiliated Hospital of Nanjing Medical University, China (X.C.); Department of Cardiovascular Surgery, Shanghai East
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19
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Ferreira LL, Gomes-Filho JE, Benetti F, Carminatti M, Ervolino E, Briso ALF, Cintra LTA. The effect of dental bleaching on pulpal tissue response in a diabetic animal model: a study of immunoregulatory cytokines. Int Endod J 2017; 51:347-356. [PMID: 28857196 DOI: 10.1111/iej.12852] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 08/25/2017] [Indexed: 12/20/2022]
Abstract
AIM To evaluate the influence of tooth bleaching on immunoregulatory cytokines production (IL-6, Tumour necrosis factor (TNF)-α and IL-17) in the pulp tissue of normoglycaemic and diabetic rats. METHODOLOGY Twenty-eight rats were divided into normoglycaemic and diabetic rats (n = 14). Diabetes mellitus (DM) was induced with a single dose of alloxan diluted in citrate buffer via intramuscular injection. After DM confirmation, all rats were sedated and tooth bleaching was performed using 35% hydrogen peroxide on the right maxillary molars for 30 min. Left molars were used as controls. Bleaching resulted in four hemimaxillae groups: normoglycaemic (N), N-bleached (NBle), diabetic (D) and D-bleached (DBle). After 2 and 30 days, rats were euthanized and hemimaxillae processed for analysis by haematoxylin and eosin and immunohistochemistry. Results within and between animals were submitted to Wilcoxon signed-rank and Mann-Whitney tests (P < 0.05). RESULTS At 2 days, the NBle group had mild, and the DBle had severe inflammatory infiltration in the pulpal tissue (P < 0.05). TNF-α and IL-6 cytokines were associated with increased immunolabelling in the bleached groups compared to nonbleached (P < 0.05). However, IL-17 had increased immunolabelling in the NBle compared to the N and DBle group (P < 0.05). At 30 days, reactionary dentine was observed in the coronal pulp of all bleached teeth and no inflammation was present (P > 0.05). TNF-α cytokines had increased immunolabelling in the DBle group compared to the D group (P < 0.05). However, for IL-6 and IL-17, no difference was observed in this period (P > 0.05). CONCLUSIONS Tooth bleaching increased IL-6 and TNF-α in the pulp tissue regardless of diabetes mellitus; however, diabetic rats had higher TNF-α levels for longer periods. Tooth bleaching influenced the increase in IL-17 in the early periods in normoglycaemic rats.
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Affiliation(s)
- L L Ferreira
- Departments of Endodontics, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - J E Gomes-Filho
- Departments of Endodontics, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - F Benetti
- Departments of Endodontics, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - M Carminatti
- Departments of Endodontics, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - E Ervolino
- Department of Basic Science, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - A L F Briso
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - L T A Cintra
- Departments of Endodontics, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
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20
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Qiu W, Sun B, He F, Zhang Y. MTA-induced Notch activation enhances the proliferation of human dental pulp cells by inhibiting autophagic flux. Int Endod J 2017; 50 Suppl 2:e52-e62. [DOI: 10.1111/iej.12811] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Accepted: 06/27/2017] [Indexed: 12/26/2022]
Affiliation(s)
- W. Qiu
- Graduate School at Shenzhen; Tsinghua University; Shenzhen China
- Department of Chemistry; Tsinghua University; Beijing China
- Key Lab in Healthy Science and Technology; Division of Life Science; Graduate School at Shenzhen; Tsinghua University; Shenzhen China
| | - B. Sun
- Graduate School at Shenzhen; Tsinghua University; Shenzhen China
- Key Lab in Healthy Science and Technology; Division of Life Science; Graduate School at Shenzhen; Tsinghua University; Shenzhen China
| | - F. He
- Department of Stomatology; the Second Clinical Medical College; Shenzhen People's Hospital; Jinan University; Shenzhen China
| | - Y. Zhang
- Key Lab in Healthy Science and Technology; Division of Life Science; Graduate School at Shenzhen; Tsinghua University; Shenzhen China
- Open FIESTA Center; Tsinghua University; Shenzhen China
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21
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Xing T, Tan X, Yu Q, Yang T, Fang R. Identifying the location of epidermal growth factor-responsive element involved in the regulation of type IIb sodium-phosphate cotransporter expression in porcine intestinal epithelial cells. J Anim Physiol Anim Nutr (Berl) 2016; 101:1249-1258. [PMID: 27896869 DOI: 10.1111/jpn.12645] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 10/16/2016] [Indexed: 12/14/2022]
Abstract
Phosphate is an important mineral nutrient for both human and animals in growth and physiological functions; thus, much effort in the past has been made to clarify the mechanisms governing its absorption. Previous studies have found that epidermal growth factor (EGF) inhibits phosphate absorption in human intestinal cells via modulating the interaction of transcriptional factor c-myb with sodium-phosphate cotransporter (NaPi-IIb) gene promoter. This finding provoked our interest in determining the effect of EGF on NaPi-IIb gene expression in intestinal cells of pigs and the location of EGF-responsive element in the gene promoter. Using quantitative PCR, it was observed that EGF significantly reduced NaPi-IIb gene expression in porcine intestinal epithelial IPEC-J2 cells. Transfection with a series of constructs that contain different lengths of the 5'-flanking promoter region of the NaPi-IIb gene manifested that EGF-responsive element is located in the -1200 to -800 region. Further, c-myb was extracted from the cell nucleus of IPEC cells that were exposed to EGF or not via immunoprecipitation. The electrophoretic mobility shift assay showed a specific binding of transcription factor c-myb to labelled probes encompassing DNA sequence from -1092 to -1085 (-TCCAGTTG-). This protein-DNA complex was decreased with cells exposed to EGF and abrogated when c-myb was pre-incubated with excessive unlabelled competitive probes. Results from mutagenesis studies demonstrated that the c-myb-binding site is the EGF-responsive element involved in the regulation of NaPi-IIb expression. Identifying the location of EGF-responsive element contributes to understanding mechanisms underlying EGF down-regulated NaPi-IIb gene expression and provides a foundation for further investigating EGF-regulatory functions in phosphate absorption in pig intestine.
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Affiliation(s)
- T Xing
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - X Tan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Q Yu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - T Yang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - R Fang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
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