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Zhao T, Chen L, Yu C, He G, Lin H, Sang H, Chen Z, Hong Y, Sui W, Zhao J. Effect of injectable calcium alginate-amelogenin hydrogel on macrophage polarization and promotion of jawbone osteogenesis. RSC Adv 2024; 14:2016-2026. [PMID: 38196914 PMCID: PMC10774865 DOI: 10.1039/d3ra05046g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 12/14/2023] [Indexed: 01/11/2024] Open
Abstract
Due to persistent inflammation and limited osteogenesis, jawbone defects present a considerable challenge in regenerative medicine. Amelogenin, a major protein constituent of the developing enamel matrix, demonstrates promising capabilities in inducing regeneration of periodontal supporting tissues and exerting immunomodulatory effects. These properties render it a potential therapeutic agent for enhancing jawbone osteogenesis. Nevertheless, its clinical application is hindered by the limitations of monotherapy and its rapid release characteristics, which compromise its efficacy and delivery efficiency. In this context, calcium alginate hydrogel, recognized for its superior physicochemical properties and biocompatibility, emerges as a candidate for developing a synergistic bioengineered drug delivery system. This study describes the synthesis of an injectable calcium amelogenin/calcium alginate hydrogel using calcium alginate loaded with amelogenin. We comprehensively investigated its physical properties, its role in modulating the immunological environment conducive to bone healing, and its osteogenic efficacy in areas of jawbone defects. Our experimental findings indicate that this synthesized composite hydrogel possesses desirable mechanical properties such as injectability, biocompatibility, and biodegradability. Furthermore, it facilitates jawbone formation by regulating the bone-healing microenvironment and directly inducing osteogenesis. This research provides novel insights into the development of bone-tissue regeneration materials, potentially advancing their clinical application.
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Affiliation(s)
- Tingting Zhao
- Shenzhen Stomatological Hospital, Southern Medical University 1092 Jianshe Road, Luohu District Shenzhen Guangdong 518001 China
| | - Luyuan Chen
- Stomatology Center, Shenzhen Hospital, Southern Medical University 1333 Xinhu Road, Baoan District Shenzhen Guangdong 510086 China
| | - Chengcheng Yu
- Department of Maxillofacial Surgery, Shenzhen Hospital, Southern Medical University 1333 Xinhu Road, Baoan District Shenzhen Guangdong 510086 China
| | - Gang He
- Department of Maxillofacial Surgery, Shenzhen Hospital, Southern Medical University 1333 Xinhu Road, Baoan District Shenzhen Guangdong 510086 China
| | - Huajun Lin
- Department of Maxillofacial Surgery, Shenzhen Hospital, Southern Medical University 1333 Xinhu Road, Baoan District Shenzhen Guangdong 510086 China
| | - Hongxun Sang
- Shenzhen Key Laboratory of Digital Surgical 3D Printing, Department of Orthopaedics, Shenzhen Hospital, Southern Medical University 1333 Xinhu Road, Baoan District Shenzhen Guangdong 510086 China
| | - Zhihui Chen
- Stomatology Center, Shenzhen Hospital, Southern Medical University 1333 Xinhu Road, Baoan District Shenzhen Guangdong 510086 China
| | - Yonglong Hong
- Department of Maxillofacial Surgery, Shenzhen Hospital, Southern Medical University 1333 Xinhu Road, Baoan District Shenzhen Guangdong 510086 China
| | - Wen Sui
- College of Stomatology, Shenzhen Technology University 3002 Lantian Road, Pingshan District Shenzhen Guangdong 518118 China
| | - Jianjiang Zhao
- Shenzhen Stomatological Hospital, Southern Medical University 1092 Jianshe Road, Luohu District Shenzhen Guangdong 518001 China
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Wang Y, Li Q, Shu Q, Liu M, Li N, Sui W, Yuan Z, Luo G, Li H. Clinical epidemiology and a novel predicting nomogram of central line associated bloodstream infection in burn patients. Epidemiol Infect 2023:1-23. [PMID: 37218296 DOI: 10.1017/s0950268823000766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023] Open
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Wang X, Xin H, Ning X, Zhang Y, Liu F, Zhang Z, Jia X, Guo W, Hong Y, Sui W. Strontium-loaded titanium implant with rough surface modulates osseointegration by changing sfrp4 in canonical and noncanonical Wnt signaling pathways. Biomed Mater 2022; 17. [PMID: 35349988 DOI: 10.1088/1748-605x/ac61fb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 03/29/2022] [Indexed: 11/12/2022]
Abstract
A rough morphology and strontium can activate the Wnt pathway to regulate bone mesenchymal stem cells (rBMSCs) osteogenic differentiation, but the mechanism remains unclear. We constructed smooth Ti (ST) surfaces, rough Ti (RT) surfaces subjected to hydrofluoric acid etching, strontium-loaded smooth Ti (ST-Sr) surfaces subjected to magnetron sputtering, and rough strontium-loaded Ti (RT-Sr) surfaces. We systematically studied the in vitro osteogenic differentiation of rBMSCs on these four surfaces by alkaline phosphatase measurement, Alizarin Red staining and PCR. We also investigated whether crosstalk of the canonical and noncanonical Wnt signaling pathways regulated by sfrp4, which is an inhibitor of canonical and noncanonical Wnt, is the underlying mechanism via PCR on rBMSCs in different stages of osteogenic differentiation. We confirmed the effect of sfrp4 through an in vivo sfrp4-siRNA test. The in vitro osteogenic differentiation of rBMSCs decreased in the order RT-Sr, RT, ST-Sr, and ST. Regarding the mechanism, rough morphology and strontium both enhanced the canonical Wnt pathway to promote osseointegration. Additionally, rough morphology can inhibit sfrp4 to activate the noncanonical Wnt pathway, and then, the activated noncanonical Wnt pathway can suppress the canonical Wnt pathway at the early stage of osteogenic differentiation. Strontium continuously enhanced sfrp4 to inhibit the canonical Wnt pathway instead of activating the noncanonical Wnt pathway. Interestingly, the effect of rough morphology on sfrp4 changed from inhibition to enhancement, and the enhancing effect of strontium on sfrp4 was gradually attenuated. The results of the in vivo sfrp4-siRNA test showed that osseointegration decreased in the order RT-Sr, RT-Sr-siRNA, and ST. Our results suggest that the lack of sfrp4 could suppress osseointegration, indicating that sfrp4 acts as a crucial regulatory molecule for the canonical and noncanonical Wnt pathways during the response of rBMSCs to rough morphology and strontium.
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Affiliation(s)
- Xiaoyi Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University School of Stomatology, 145 Changle West Road, Xi 'an, Xi'an, Shaanxi, 710032, CHINA
| | - He Xin
- Fourth Military Medical University, 145 Changle West Road, Xi 'an, Xi'an, 710032, CHINA
| | - Xiaona Ning
- Ophthalmology, Tangdu Hospital Fourth Military Medical University, No. 1 xinsi Road,Xi'an, Xi'an, Shaanxi, 710038, CHINA
| | - Yubohan Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University School of Stomatology, 145 Changle West Road, Xi 'an, Xi'an, Shaanxi, 710032, CHINA
| | - Fuwei Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University School of Stomatology, 145 Changle West Road, Xi 'an, Xi'an, Shaanxi, 710032, CHINA
| | - Zhouyang Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University School of Stomatology, 145 Changle West Road, Xi 'an, Xi'an, Shaanxi, 710032, CHINA
| | - Xuelian Jia
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University School of Stomatology, 145 Changle West Road, Xi 'an, Xi'an, Shaanxi, 710032, CHINA
| | - Weiwei Guo
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University School of Stomatology, 145 Changle West Road, Xi 'an, Xi'an, Shaanxi, 710032, CHINA
| | - Yonglong Hong
- Shenzhen Hospital of Southern Medical University, 1333 XinHu Road, Shenzhen, Shenzhen, Guangdong, 518000, CHINA
| | - Wen Sui
- Shenzhen Hospital of Southern Medical University, 1333 XinHu Road, Shenzhen 518100, Guangdong, China., Shenzhen, 518000, CHINA
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Liu F, Sui W, Zhou ZF, Mi Y, He TQ, Li ZB, Hong YL, Chen FM. Development of gestational diabetes mellitus in women with periodontitis in early pregnancy: A population-based clinical study. J Clin Periodontol 2021; 49:164-176. [PMID: 34865247 DOI: 10.1111/jcpe.13578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 11/10/2021] [Accepted: 11/23/2021] [Indexed: 11/27/2022]
Abstract
AIM This study aimed to determine whether periodontitis in early pregnancy and periodontal therapy during gestation affect the incidence of gestational diabetes mellitus (GDM) through a population-based clinical study. MATERIALS AND METHODS Subjects without periodontitis at 1-4 weeks of gestation who met our inclusion criteria were enrolled in the non-periodontitis group. Periodontitis patients who agreed or refused to receive periodontal therapy during pregnancy were separately enrolled in the periodontitis treated or untreated group. At 12-16 weeks of gestation, gingival crevicular fluid (GCF) and venous blood were collected for analyses of bacterial species and serum inflammatory mediators, respectively. At 24-28 weeks of gestation, GDM patients were identified by oral glucose tolerance tests. The association tests were performed using Chi-squared statistics and regression analyses. RESULTS The complete data of 3523 pregnant women were recorded during the study period. GDM incidence among the untreated periodontitis participants (84/749, 11.21%) was significantly higher than that among the non-periodontitis participants (108/2255, 4.79%) (p < .05), and periodontal treatment during gestation reduced the incidence from 11.21% (untreated group) to 7.32% (38/519, treated group) (p < .05). Based on multiple logistic regression analyses, it was found that periodontitis in early pregnancy was associated with GDM, and three-step regression analyses showed that Porphyromonas gingivalis (P. gingivalis) and the serum TNF-α and IL-8 levels played a role in the association between untreated periodontitis and GDM. Furthermore, Pearson's correlation test indicated that the existence of P. gingivalis in GCF was positively correlated with high serum levels of these two inflammatory mediators. CONCLUSIONS This study establishes a connection between periodontitis in early pregnancy and GDM and demonstrates that the presence of P. gingivalis is associated with high levels of inflammatory mediators in serum, and thereby may contribute to the development of GDM. In-depth mechanistic studies are needed to further support these findings.
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Affiliation(s)
- Fen Liu
- Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,Department of Stomatology, Northwest Women's and Children's Hospital, Xi'an, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Wen Sui
- Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Zhi-Fei Zhou
- Department of Stomatology, General Hospital of Tibetan Military Command, Lhasa, China
| | - Yang Mi
- Department of Obstetrics, Northwest Women's and Children's Hospital, Xi'an, China
| | - Tong-Qiang He
- Department of Obstetrics, Northwest Women's and Children's Hospital, Xi'an, China
| | - Zhi-Bin Li
- Department of Obstetrics, Northwest Women's and Children's Hospital, Xi'an, China
| | - Yong-Long Hong
- Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Fa-Ming Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Fourth Military Medical University, Xi'an, China
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Shen Q, Zhu H, Lei Q, Chen L, Yang D, Sui W. MicroRNA‑149‑3p inhibits cell proliferation by targeting AKT2 in oral squamous cell carcinoma. Mol Med Rep 2021; 23:172. [PMID: 33398370 PMCID: PMC7821286 DOI: 10.3892/mmr.2020.11811] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/17/2020] [Indexed: 12/16/2022] Open
Abstract
MicroRNAs (miRs) exhibit oncogenic or tumor suppressive functions that contribute to the initiation and development of various types of human cancer. miR-149-3p has been reported to serve multiple roles in the regulation of proliferation, apoptosis and metastasis. However, the effects and detailed mechanism of miR-149-3p in oral squamous cell carcinoma (OSCC) remain unclear. In the present study, miR-149-3p mimic, mimic control, miR-149-3p inhibitor and inhibitor control were transiently transfected into Cal27 and SCC-9 cells. The viability, proliferation and apoptosis of OSCC cells were determined using Cell Counting Kit-8, colony formation and Annexin V assays, respectively. The mRNA expression levels of miR-149-3p and AKT2 were determined by reverse transcription-quantitative PCR. The protein expression levels of AKT2, cleaved caspase-3 and cleaved PARP were examined by western blot analysis. The binding of miR-149-3p to the AKT2 3′-untranslated region was evaluated by a dual luciferase reporter assay. In the present study, overexpression of miR-149-3p reduced the viability and proliferation of OSCC cells. By contrast, increased cell viability and proliferation was observed in miR-149-3p-deficient OSCC cells. Dual luciferase reporter assay indicated that miR-149-3p significantly decreased the luciferase activity of the wild-type AKT2 3′-untranslated region. Moreover, overexpression of miR-149-3p downregulated the mRNA and protein expression levels of AKT2, suggesting that miR-149-3p was a negative modulator of AKT2. Restoration of AKT2 efficiently reversed the miR-149-3p-mediated reduction in the proliferative capacity of OSCC cells. In addition, miR-149-3p enhanced the sensitivity of OSCC cells to the chemotherapeutic drug 5-fluorouracil. Taken together, the current findings revealed an inhibitory effect of miR-149-3p on the proliferation of OSCC cells through the post-transcriptional suppression of AKT2, and indicated a potential chemosensitizing function of miR-149-3p for the treatment of patients with OSCC.
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Affiliation(s)
- Qin Shen
- Department of Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Hong Zhu
- Department of Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Qiaoling Lei
- Department of Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Luyuan Chen
- Department of Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Dajiang Yang
- Department of Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Wen Sui
- Department of Stomatology Center, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
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Xiong P, Sui W, He W, Lei Q, Gao W. Study on the correlation parameters of Class II malocclusion in child tooth dentition early stage by using 3D technique. Pak J Med Sci 2019; 35:1290-1294. [PMID: 31488994 PMCID: PMC6717483 DOI: 10.12669/pjms.35.5.592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective To record the dentition, jaw and facial growth and development of children with class II malocclusion at the age of 7-8 years old in the early dental transitional stage with 3D technology and to provide the study basis for the growth and development parameters of normal children and children with class II malocclusion. Methods Twenty-four children who were suffering class-II malocclusion in the early dental transitional stage and received treatment between July 2016 and July 2017 in our hospital were selected as the study group, and 20 healthy children were selected as the control group in the same period. SIRONA CEREC dentition scanning, 3D reconstruction of the lower mandible and 3d MD face scanning were performed on the children. Relevant data were recorded and compared. Results The dentition scanning results suggested that the study group had significantly larger anterior overbite and anterior overjet and smaller width of the upper arch than the control group; there was a significant difference between the two groups (P<0.05). The 3D reconstruction of the lower mandible suggested that the study group had smaller Go angle and SNB angle and shorter ANS-Me distance, Go-Me distance and N-Me distance compared to the control group; the differences had statistical significance (P<0.05). The face scanning results demonstrated that the nasolabial angle and facial convexity angle of the study group were significantly larger than those in the control group, and the difference was statistically significant (P<0.05). Conclusion The dentition scanning results suggested that the study group had significantly larger anterior overbite and anterior overjet and smaller width of the upper arch than the control group; there was a significant difference between the two groups (P<0.05). The 3D reconstruction of the lower mandible suggested that the study group had smaller Go angle and SNB angle and shorter ANS-Me distance, Go-Me distance and N-Me distance compared to the control group; the differences had statistical significance (P<0.05). The face scanning results demonstrated that the nasolabial angle and facial convexity angle of the study group were significantly larger than those in the control group, and the difference was statistically significant (P<0.05).
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Affiliation(s)
- Peiying Xiong
- Peiying Xiong, Department of Stomatology, Shenzhen Hospital of Southern Medical University, Shenzhen, 518000, China
| | - Wen Sui
- Wen Sui, Department of Stomatology, Shenzhen Hospital of Southern Medical University, Shenzhen, 518000, China
| | - Wendan He
- Wendan He, Department of Stomatology, Shenzhen Hospital of Southern Medical University, Shenzhen, 518000, China
| | - Qiaoling Lei
- Qiaoling Lei, Department of Stomatology, Shenzhen Hospital of Southern Medical University, Shenzhen, 518000, China
| | - Wenli Gao
- Wenli Gao, Department of Stomatology, Shenzhen Hospital of Southern Medical University, Shenzhen, 518000, China
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Xiao M, Yao B, Zhang BD, Bai Y, Sui W, Wang W, Yu Q. Stromal-derived Factor-1α signaling is involved in bone morphogenetic protein-2-induced odontogenic differentiation of stem cells from apical papilla via the Smad and Erk signaling pathways. Exp Cell Res 2019; 381:39-49. [DOI: 10.1016/j.yexcr.2019.04.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 04/25/2019] [Accepted: 04/29/2019] [Indexed: 12/19/2022]
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Liu F, Li Y, Liang J, Sui W, Bellare A, Kong L. Effects of micro/nano strontium‐loaded surface implants on osseointegration in ovariectomized sheep. Clin Implant Dent Relat Res 2019; 21:377-385. [DOI: 10.1111/cid.12719] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 01/04/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Fuwei Liu
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial SurgerySchool of Stomatology, The Fourth Military Medical University Xi'an People's Republic of China
| | - Yongfeng Li
- Department of StomatologyPLA 301 Hospital Beijing People's Republic of China
| | - Jianfei Liang
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial SurgerySchool of Stomatology, The Fourth Military Medical University Xi'an People's Republic of China
| | - Wen Sui
- Department of StomatologyShenzhen Hospital of Southern Medical University Shenzhen People's Republic of China
| | - Anuj Bellare
- Department of Orthopedic SurgeryBrigham and Women's Hospital Boston Massachusetts
| | - Liang Kong
- State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial SurgerySchool of Stomatology, The Fourth Military Medical University Xi'an People's Republic of China
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Hong Y, He H, Sui W, Zhang J, Zhang S, Yang D. [Corrigendum] Long non‑coding RNA H19 promotes cell proliferation and invasion by acting as a ceRNA of miR‑138 and releasing EZH2 in oral squamous cell carcinoma. Int J Oncol 2018; 53:915. [PMID: 29901192 PMCID: PMC6017152 DOI: 10.3892/ijo.2018.4428] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 11/29/2017] [Indexed: 11/30/2022] Open
Affiliation(s)
- Yonglong Hong
- Department of Oral and Maxillofacial Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Haitao He
- Department of Oral and Maxillofacial Surgery, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China
| | - Wen Sui
- Department of Oral and Maxillofacial Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Jingge Zhang
- Department of Oral and Maxillofacial Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Shenfu Zhang
- Department of Oral and Maxillofacial Surgery, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China
| | - Dajiang Yang
- Department of Oral and Maxillofacial Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
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Hong Y, He H, Sui W, Zhang J, Zhang S, Yang D. Long non-coding RNA H1 promotes cell proliferation and invasion by acting as a ceRNA of miR‑138 and releasing EZH2 in oral squamous cell carcinoma. Int J Oncol 2018; 52:901-912. [PMID: 29344674 DOI: 10.3892/ijo.2018.4247] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 11/29/2017] [Indexed: 11/06/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) have been shown to play pivotal roles in various types of human cancer, including oral squamous cell carcinoma (OSCC). However, the potential mechanisms of action of lncRNAs in OSCC remain to be fully elucidated. The aim of the present study was to further explore the potential mechanisms of action of lncRNAs in OSCC. We first analyzed Gene Expression Omnibus (GEO) datasets to investigate aberrantly expressed lncRNAs which may be involved in the development of OSCC. Reverse transcription‑quantitative PCR (RT‑qPCR) was performed to analyze the expression levels of lncRNA H19. In addition, the correlation between H19 expression and the clinical characteristics and prognosis of patients with OSCC was statistically analyzed. The effects of H19 expression on OSCC cells were examined by using overexpression and RNA interference approaches in vitro and in vivo. To examine the competitive endogenous RNA (ceRNA) mechanisms, bioinformatics analysis and luciferase reporter assay were performed. In addition, the correlation between H19 and microRNA (miR)‑138 was detected. H19 was found to be upregulated in OSCC tissues and its high expression level was associated with the TNM stage and nodal invasion, and also correlated with a shorter overall survival of patients with OSCC. The knockdown of H19 significantly inhibited OSCC cell proliferation, migration, invasion and epithelial-mesenchymal transition (EMT), and induced apoptosis in vitro; it also suppressed subcutaneous tumor growth in vivo. In addition, H19 was found to regulate the expression of oncogene enhancer of zeste homolog 2 (EZH2) by competing with miR‑138; the inhibition of miR‑138 attenuated the inhibitory effects of H19 knockdown on OSCC cells. On the whole, our findings suggest that H19 functions as an oncogene by inhibiting miR‑138 and facilitating EZH2 expression in OSCC. Thus, lncRNA H1 may represent a potential therapeutic target for OSCC.
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Affiliation(s)
- Yonglong Hong
- Department of Oral and Maxillofacial Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Haitao He
- Department of Oral and Maxillofacial Surgery, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China
| | - Wen Sui
- Department of Oral and Maxillofacial Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Jingge Zhang
- Department of Oral and Maxillofacial Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
| | - Shenfu Zhang
- Department of Oral and Maxillofacial Surgery, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China
| | - Dajiang Yang
- Department of Oral and Maxillofacial Surgery, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong 518100, P.R. China
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Zheng P, Xie Z, Yuan Y, Sui W, Wang C, Gao X, Zhao Y, Zhang F, Gu Y, Hu P, Ye J, Feng X, Zhang L. Plin5 alleviates myocardial ischaemia/reperfusion injury by reducing oxidative stress through inhibiting the lipolysis of lipid droplets. Sci Rep 2017; 7:42574. [PMID: 28218306 PMCID: PMC5316932 DOI: 10.1038/srep42574] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 01/12/2017] [Indexed: 12/31/2022] Open
Abstract
Myocardial ischaemia-reperfusion (I/R) injury is a complex pathophysiological process. Current research has suggested that energy metabolism disorders, of which the abnormal consumption of fatty acids is closely related, compose the main pathological basis for myocardial I/R injury. Lipid droplets (LD) are critical regulators of lipid metabolism by LD-associated proteins. Among the lipid droplet proteins, the perilipin family members regulate lipolysis and lipogenesis through different mechanisms. Plin5, an important perilipin protein, promotes LD generation and lowers fatty acid oxidation, thus protecting the myocardium from lipotoxicity. This study investigated the protective effects of Plin5 in I/R myocardium. Our results indicated that Plin5 deficiency exacerbated the myocardial infarct area, aggravated left ventricular systolic dysfunction, reduced lipid storage, and elevated free fatty acids. Plin5-deficient myocardium exhibited severely damaged mitochondria, elevated reactive oxygen species (ROS) and malondialdehyde (MDA) levels, and decreased superoxide dismutase (SOD) activity. Furthermore, the decreased phosphorylation of PI3K/Akt in Plin5-null cardiomyocytes might contribute to I/R injury aggravation. In conclusion, Plin5, a new regulator of myocardial lipid metabolism, decreases free fatty acid peroxidation by inhibiting the lipolysis of intracellular lipid droplets, thus providing cardioprotection against I/R injury and shedding new light on therapeutic solutions for I/R diseases.
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Affiliation(s)
- Pengfei Zheng
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China.,Department of Cardiology, The Sixteenth Hospital of PLA, Aletai 836500, Xinjiang Province, China
| | - Zhonglin Xie
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Yuan Yuan
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Wen Sui
- Department of Stomatology Center, Shenzhen Hospital of Southern Medical University, Shenzhen, 518000, Guangdong Province, China
| | - Chao Wang
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Xing Gao
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Yuanlin Zhao
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Feng Zhang
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Yu Gu
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Peizhen Hu
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Jing Ye
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Xuyang Feng
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Lijun Zhang
- Department of Clinical Diagnosis, Tangdu Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
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Yao XK, Pan ZP, Li Y, Lun YZ, Chi Q, Jiang SJ, Wang F, Sui W. Downregulation of SWI5 and CTC1 genes: hepatitis B virus DNA polymerase transactivated protein 1-mediated inhibition of DNA repair. Acta Virol 2016; 60:190-5. [PMID: 27265469 DOI: 10.4149/av_2016_02_190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Hepatitis B virus (HBV) DNA polymerase transactivated protein 1 (HBVDNAPTP1) is a novel protein upregulated by HBV DNA polymerase, which has been screened by suppression subtractive hybridization technique (SSH) (GenBank Acc. No. AY450389). A vector pcDNA3.1 (-)/myc-His A-HBVDNAPTP1 was constructed and used to transfect acute monocytic leukemia cell line THP-1. HBVDNAPTP1 expression was detected by Western blot analysis in the cells. A cDNA library of genes downregulated by HBVDNAPTP1 in THP-1 cells was made in pGEM-T Easy using SSH. The cDNAs were sequenced and analyzed with BLAST search against the sequences in GenBank. Some sequences, such as DNA repair protein SWI5 homolog (SWI5) and CTS telomere maintenance complex component 1 (CTC1), might be involved in DNA repair. Protein expression of SWI5 and CTC1 was identified by Western blot in THP-1 cells. HBVDNAPTP1 could downregulate the expression of SWI5 and CTC1 at translation level.
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Yan Q, Jiang H, Wang B, Sui W, Zhou H, Zou G. Expression and Significance of RANTES and MCP-1 in Renal Tissue With Chronic Renal Allograft Dysfunction. Transplant Proc 2016; 48:2034-9. [DOI: 10.1016/j.transproceed.2016.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 05/04/2016] [Indexed: 12/01/2022]
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14
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Lu B, Li D, Cui Y, Sui W, Huang L, Lu X. Epidemiology of Group B streptococcus isolated from pregnant women in Beijing, China. Clin Microbiol Infect 2014; 20:O370-3. [DOI: 10.1111/1469-0691.12416] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 09/24/2013] [Accepted: 09/26/2013] [Indexed: 11/29/2022]
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15
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Sui W, Cao C, Che W, Chen J, Xue W, Liu P, Guo L, Dai Y. Comparative analyses of histone H3K9 trimethylations in the heart and spleen of normal humans. Genet Mol Res 2014; 13:1697-706. [PMID: 24446338 DOI: 10.4238/2014.january.14.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The global features of trimethylations of histone 3 at lysine 9 (H3K9me3) have been well studied in recent years; however, most of these studies were performed in mammalian cell lines. In this study, we generated genome-wide maps of H3K9me3 of the human heart and spleen using chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) technology. We examined the global patterns of H3K9me3 in both tissues and found that modifications were closely associated with tissue-specific expression, function, and development. In addition, we found that 169 genes displayed significant H3K9me3 differences between the heart and spleen. Among these genes, 64 were heart-H3K9me3-specific, 87 genes were spleen-H3K9me3-specific, and 18 were shared in both heart- and spleen-H3K9me3. In conclusion, we observed significant differences in H3K9me3 in the heart and spleen, which may help to explain epigenetic differences between these tissues. Such novel findings highlight the significance of H3K9me3 as a potential biomarker or promising target for epigenetic-based disease treatment.
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Affiliation(s)
- W Sui
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - C Cao
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - W Che
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - J Chen
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - W Xue
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - P Liu
- Nephrology Department of Guilin 181st Hospital, Guangxi Key Laboratory of Metabolic Diseases Research, Guilin, Guangxi, China
| | - L Guo
- College of Life Science, Guangxi Normal University, Guilin, Guangxi, China
| | - Y Dai
- Clinical Medical Research Center, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, Guangdong, China
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16
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Feng X, Yuan Y, Wang C, Feng J, Yuan Z, Zhang X, Sui W, Hu P, Zheng P, Ye J. Autophagy involved in lipopolysaccharide-induced foam cell formation is mediated by adipose differentiation-related protein. Lipids Health Dis 2014; 13:10. [PMID: 24405744 PMCID: PMC3896829 DOI: 10.1186/1476-511x-13-10] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 01/07/2014] [Indexed: 02/02/2023] Open
Abstract
Background Autophagy is an essential process for breaking down macromolecules and aged/damaged cellular organelles to maintain cellular energy balance and cellular nutritional status. The idea that autophagy regulates lipid metabolism is an emerging concept with important implications for atherosclerosis. However, the potential role of autophagy and its relationship with lipid metabolism in foam cell formation remains unclear. In this study, we found that autophagy was involved in the lipopolysaccharide (LPS)-induced the formation of foam cells and was at least partially dependent on adipose differentiation-related protein (ADRP). Method Foam cell formation was evaluated by Oil red O staining. Autophagic activity was determined by immunofluorescence and Western blotting. ADRP gene expression of ADRP was examined by real-time PCR (RT-PCR). The protein expression of ADRP and LC3 was measured using Western blotting analysis. Intracellular cholesterol and triglyceride levels in foam cells were quantitatively measured by enzymatic colorimetric assays. Results LPS promoted foam cell formation by inducing lipid accumulation in macrophages. The activation of autophagy with rapamycin (Rap) decreased intracellular cholesterol and triglyceride levels, whereas the inhibition of autophagy with 3-methyladenine (3MA) enhanced the accumulation of lipid droplets. Overexpression of ADRP alone increased the formation of foam cells and consequently autophagic activity. In contrast, the inhibitory effects of ADRP activity with siRNA suppressed the activation of autophagy. Taken together, we propose a novel role for ADRP in the regulation of macrophage autophagy during LPS stimulation. Conclusion We defined a new molecular pathway in which LPS-induced foam cell formation is regulated through autophagy. These findings facilitate the understanding of the role of autophagy in the development of atherosclerosis.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Jing Ye
- Department of Pathology, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China.
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17
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Sui W, Ou M, Chen J, Yu J, Zhang Y, Lan H, Huang H, Dai Y. Human telomerase RNA gene (TERC) gain and polysomy of chromosome 3 in cervicovaginal liquid-based pap preparations: a fluorescence in situ hybridization study. EUR J GYNAECOL ONCOL 2010; 31:375-379. [PMID: 20882876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
PURPOSE. This study investigated human telomerase RNA gene (TERC) gain and polysomy of chromosome 3 in cervicovaginal liquid-based pap preparations in Guilin, China, and assessed the relationship between FISH findings and clinical diagnoses. METHODS. Slides prepared from 63 liquid-based preparations with cytologic diagnoses of negative for squamous intraepithelial lesion or malignancy (NILM n = 9), atypical squamous cells of undetermined significance (ASCUS, n = 18), low-grade squamous intraepithelial lesion (LSIL, n = 14), high-grade squamous intraepithelial lesion (HSIL, n = 9), and cervical squamous cell carcinoma (SCCA, n = 13) were analyzed for TERC gain and polysomy of chromosome 3 using a commercially available two-color FISH probe. The results of the cytologic analysis and those of concurrent or subsequent biopsies, when available, were compared with the FISH findings. The Mann-Whitney test was used to assess associations between FISH findings and diagnoses. RESULTS. TERC gain and polysomy of chromosome 3 were significantly associated with the cytologic diagnosis (p? 0.001). Patients with HSIL or SCCA cytology diagnoses had a significantly higher percentage of cells with TERC gain and polysomy of chromosome 3 than did patients with NILM, ASCUS or LSIL cytologic diagnoses. Those abnormal cases with CIN1 histological diagnosis had a significantly lower percentage of cells with TERC gain and polysomy of chromosome 3 than did patients with a CIN2, CIN3 and SCCA histological diagnosis. CONCLUSIONS. TERC gain and polysomy of chromosome 3 may be important associated genetic events in cervical intraepithelial neoplasia and carcinoma. FISH is a potential tool for the diagnoses of uterine cervix disease.
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Affiliation(s)
- W Sui
- Key Laboratory of Guangzhou Military Area Command, 181st Hospital of People's Liberation Army, Guilin
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18
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Liu Z, Sui W, Zhao M, Li Z, Li N, Thresher R, Giudice GJ, Fairley JA, Sitaru C, Zillikens D, Ning G, Marinkovich MP, Diaz LA. Subepidermal blistering induced by human autoantibodies to BP180 requires innate immune players in a humanized bullous pemphigoid mouse model. J Autoimmun 2008; 31:331-338. [PMID: 18922680 PMCID: PMC2642586 DOI: 10.1016/j.jaut.2008.08.00] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Revised: 08/18/2008] [Accepted: 08/21/2008] [Indexed: 12/20/2023]
Abstract
Bullous pemphigoid (BP) is a cutaneous autoimmune inflammatory disease associated with subepidermal blistering and autoantibodies against BP180, a transmembrane collagen and major component of the hemidesmosome. Numerous inflammatory cells infiltrate the upper dermis in BP. IgG autoantibodies in BP fix complement and target multiple BP180 epitopes that are highly clustered within a non-collagen linker domain, termed NC16A. Anti-BP180 antibodies induce BP in mice. In this study, we generated a humanized mouse strain, in which the murine BP180NC14A is replaced with the homologous human BP180NC16A epitope cluster region. We show that the humanized NC16A (NC16A+/+) mice injected with anti-BP180NC16A autoantibodies develop BP-like subepidermal blisters. The F(ab')(2) fragments of pathogenic IgG fail to activate the complement cascade and are no longer pathogenic. The NC16A+/+ mice pretreated with mast cell activation blocker or depleted of complement or neutrophils become resistant to BP. These findings suggest that the humoral response in BP critically depends on innate immune system players.
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Affiliation(s)
- Zhi Liu
- Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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19
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Liu Z, Sui W, Zhao M, Li Z, Li N, Thresher R, Giudice GJ, Fairley JA, Sitaru C, Zillikens D, Ning G, Marinkovich MP, Diaz LA. Subepidermal blistering induced by human autoantibodies to BP180 requires innate immune players in a humanized bullous pemphigoid mouse model. J Autoimmun 2008; 31:331-8. [PMID: 18922680 PMCID: PMC2642586 DOI: 10.1016/j.jaut.2008.08.009] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Revised: 08/18/2008] [Accepted: 08/21/2008] [Indexed: 10/21/2022]
Abstract
Bullous pemphigoid (BP) is a cutaneous autoimmune inflammatory disease associated with subepidermal blistering and autoantibodies against BP180, a transmembrane collagen and major component of the hemidesmosome. Numerous inflammatory cells infiltrate the upper dermis in BP. IgG autoantibodies in BP fix complement and target multiple BP180 epitopes that are highly clustered within a non-collagen linker domain, termed NC16A. Anti-BP180 antibodies induce BP in mice. In this study, we generated a humanized mouse strain, in which the murine BP180NC14A is replaced with the homologous human BP180NC16A epitope cluster region. We show that the humanized NC16A (NC16A+/+) mice injected with anti-BP180NC16A autoantibodies develop BP-like subepidermal blisters. The F(ab')(2) fragments of pathogenic IgG fail to activate the complement cascade and are no longer pathogenic. The NC16A+/+ mice pretreated with mast cell activation blocker or depleted of complement or neutrophils become resistant to BP. These findings suggest that the humoral response in BP critically depends on innate immune system players.
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Affiliation(s)
- Zhi Liu
- Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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Abstract
Regulation of pH is necessary to the production of an environment conducive to enamel growth and mineralization. We hypothesize that abnormal extracellular pH in the enamel matrix of mice with the cystic fibrosis gene knocked out (CF mice) results in altered enamel mineralization. The enamel matrix pH during amelogenesis was studied in 10 normal and 10 CF mice. Freshly dissected incisors were immersed in pH indicator or glyoxal bis (2-hydro-xyanil) (GBHA). The normal mouse enamel matrix pH was generally higher and modulated differently than did the CF mouse enamel. GBHA staining showed that normal mice had 2 well-demarcated bands in the maturation zone that correlated to the neutral pH zones, while CF mice showed no staining. These results indicate that CFTR plays a role in pH regulation during enamel development and that a reduced pH results in a lack of calcium influx during enamel maturation and hypomineralization of the CF incisor enamel.
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Affiliation(s)
- W Sui
- Department of Pediatric Dentistry, Brauer Hall CB 7450, School of Dentistry, University of North Carolina, Chapel Hill 27599-7450, USA
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21
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Sui W, Zhang X, Liu X. [Expression of rat amelogenin gene in Escherichia coli]. Zhonghua Kou Qiang Yi Xue Za Zhi 2001; 36:45-7. [PMID: 11812304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To detect the expression of amelogenin (Am) gene in Escherichia coli (E. coli). METHODS The cDNA fragmain of Am gene was obtained with EcoRI and Xhol I from the plasmid PUC18/Am. The fragment was inserted into prokaryotic gene fusion vector PGEX-4T-2 and an expression plasmid PGEX-4T-2/Am was constructed. PGEX-4T-2/Am was induced by IPTG for 4 h. RESULTS 15% SDS-PAGE revealed a new forein protein band near 27,000. CONCLUSION The constructed plasmid expresses Am gene in E. coli.
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Affiliation(s)
- W Sui
- Department of Conservative Dentistry, College of Stamatology, Forth Military Medical University, Xi'an 710032, China
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22
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Li YQ, Sui W, Wu C, Yu LJ. Derivative matrix isopotential synchronous fluorescence spectroscopy for the direct determination of 1-hydroxypyrene as a urinary biomarker of exposure to polycyclic aromatic hydrocarbons. ANAL SCI 2001; 17:167-70. [PMID: 11993656 DOI: 10.2116/analsci.17.167] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Urinary 1-hydroxypyrene is a biomarker in the measurement of human exposure to polycyclic aromatic hydrocarbons. A rapid and simple derivative isopotential synchronous fluorescence method was developed for the direct determination of 1-hydroxypyrene in urine. A length of iso-intensity route was scanned on the three-dimensional fluorescence spectrum of urine and this result was combined with that from derivative technique. Thus the strong background signals of urine were removed and the 1-hydroxypyrene can be determined directly in urine without tedious pre-separation. The derivative isopotential synchronous fluorescence spectrum was directly obtained from a single scan on a spectrofluorometer, which further simplified isopotential synchronous fluorescence technique. The recoveries of 93% to 115% were obtained for 1-hydroxypyrene added to urine.
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Affiliation(s)
- Y Q Li
- Department of Chemistry, Xiamen University, China.
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Sui W, Wu C, Li YQ. Rapid simultaneous determination of four anthracene derivatives using a single non-linear variable-angle synchronous fluorescence spectrum. Fresenius J Anal Chem 2000; 368:669-75. [PMID: 11227546 DOI: 10.1007/s002160000551] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A rapid, simple and inexpensive spectrofluorimetric method has been developed for the simultaneous identification and quantification of anthracene (ANT), 9,10-dimethylanthracene (DIM), 2-aminoanthracene (AMI) and dibenz[ah]anthracene (DIB). A well-resolved spectrum for the mixture of these four compounds is obtained based on a single non-linear variable-angle synchronous scanning. The linear concentration ranges are 10-1,000, 5-500, 50-1,000 and 10-200 ng mL(-1) for ANT, DIM, AMI and DIB, respectively, at lambdaex/lambdaem = 358/380, 399/408, 414/465 and 298/394 nm, respectively. The analyses are performed in cyclohexane. Recoveries of 90.0-111.0% in synthetic mixtures are obtained. The detection limits are 2.0 ng mL(-1) for DIM, 2.7 ng mL(-1) for ANT, 15.8 ng mL(-1) for AMI and 4.2 ng mL(-1) for DIB. The method has also been applied to several real water samples with satisfactory results.
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Affiliation(s)
- W Sui
- Department of Chemistry and Key Laboratory of Analytical Sciences of MOE, Xiamen University, PR China
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Sui W, Xiao MZ, Hong YL. Expression of amelogenins in developing embryonic and neonatal rat teeth. Chin J Dent Res 2000; 3:51-4. [PMID: 11314342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
OBJECTIVE Tooth enamel is formed by ameloblasts, which are derived from epitheliums and secrete an extracellular matrix containing a complex arrangement of protein components. The epithelial component, referred to as the enamel organ, contains a layer of cells that secrete an organic matrix that biomineralizes to become tooth enamel. Adjacent ectomesenchyme cells differentiate to become dentinproducing odontoblasts. These two mineralized matrices form the crown of the vertebrate tooth. Therefore, amelogenins play a critical role in tooth enamel formation. We have examined the expression patterns and tissue distribution of amelogenins in their developmental stages in order to build a foundation for further study. METHODS Amelogenin expression patterns and tissue distribution in developing teeth of embryonic (E17E19) and neonatal (1 to 9 days old) Wistar rats were examined by immunohistochemistry. RESULTS Positive immunostaining for amelogenin was first observed in the late embryonic stage, E18. The highest level of amelogenin was noted in neonatal secretary ameloblasts, fully engaged in enamel matrix deposition (3 to 5 days old). After that, amelogenin expression continued at a lower level (6, 7, 8 days old). There was no amelogenin staining observed in the maturation stage of development (9 days old). CONCLUSIONS Amelogenin expression occurs as early as the polarization stage of pre-ameloblasts. Amelogenin was also expressed, but at a low level, in post-secretary stages of amelogenesis. Odontoblasts did not contain detectable amelogenin.
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Affiliation(s)
- W Sui
- Department of Endodontics, College and Hospital of Stomatology, Fourth Military Medical University, No. 1 Kang Fu Road, Xian, 710032, P. R. China
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Sui W, Hong Y, Xiao M. [Extract of cemental matrix enhance periodontal cells bind to the root surface]. Hua Xi Kou Qiang Yi Xue Za Zhi 1999; 17:122-4. [PMID: 12539702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To investigate whether the extract of cemental matrix can enhance periodontal cells binding to the root surfaces. METHODS Healthy human gingiva and periodontal ligament were acquired from patients, then gingival fibroblasts and periodontal cells were cultured in vitro. On the other hand, extract of cemental matrix was separated and clarified from healthy teeth which were extracted because of orthodontic treatment. Finally, the effects of cementum matrix with different concentration and different time on the attachment of gingival fibroblast and periodontal cells to root surface were observed. RESULTS The extract of cemental matrix could enhance the initial attachment of human gingival fibroblasts (HGF) and human periodontal cells (HPC) to the surface of root, and such effects were strengthened with increasing density and time. The optimal concentration of extract of cell attachment 10 micrograms/ml, and the attachment was also proportional to the incubation time, reaching near maximal levels at 2 hours, furthermore, the extract of cemental matrix was more effective in promoting the attachment of human periodontal cells than that of gingival fibroblasts. CONCLUSION The extract of cemental matrix can enhance the initial attachment of HGF and HPC on the root surface.
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Affiliation(s)
- W Sui
- College of Stomatology, Fourth Military Medical University
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