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Fang L, Zhai Q, Zhang H, Ji P, Chen C, Zhang H. Comparisons of different extraction methods and solvents for saliva samples. Metabolomics 2024; 20:38. [PMID: 38460055 DOI: 10.1007/s11306-024-02105-2] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 02/19/2024] [Indexed: 03/11/2024]
Abstract
INTRODUCTION Changes in the categories and concentrations of salivary metabolites may be closely related to oral, intestinal or systemic diseases. To study salivary metabolites, the first analytical step is to extract them from saliva samples as much as possible, while reducing interferences to a minimum. Frequently used extraction methods are protein precipitation (PPT), liquid-liquid extraction (LLE) and solid-phase extraction (SPE), with various organic solvents. The types and quantities of metabolites extracted with different methods may vary greatly, but few studies have systematically evaluated them. OBJECTIVES This study aimed to select the most suitable methods and solvents for the extraction of saliva according to different analytical targets. METHODS An untargeted metabolomics approach based on liquid chromatography-mass spectrometry was applied to obtain the raw data. The numbers of metabolites, repeatability of the data and intensities of mass spectrometry signals were used as evaluation criteria. RESULTS PPT resulted in the highest coverage. Among the PPT solvents, acetonitrile displayed the best repeatability and the highest coverage, while acetone resulted in the best signal intensities for the extracted compounds. LLE with the mixture of chloroform and methanol was the most suitable for the extraction of small hydrophobic compounds. CONCLUSION PPT with acetonitrile or acetone was recommended for untargeted analysis, while LLE with the mixture of chloroform and methanol was recommended for small hydrophobic compounds.
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Affiliation(s)
- Lingli Fang
- Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Qiming Zhai
- Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Hua Zhang
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ping Ji
- Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Chang Chen
- Institute of Life Sciences, Chongqing Medical University, Chongqing, China.
| | - Hongmei Zhang
- Department of Pediatric Dentistry, Stomatological Hospital of Chongqing Medical University, Chongqing, China.
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Jiang J, Xia Z, Zheng D, Li Y, Li F, Wang W, Ding S, Zhang J, Su X, Zhai Q, Zuo Y, Zhang Y, Gaisano HY, He Y, Sun J. Factors associated with nocturnal and diurnal glycemic variability in patients with type 2 diabetes: a cross-sectional study. J Endocrinol Invest 2024; 47:245-253. [PMID: 37354249 DOI: 10.1007/s40618-023-02142-z] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 06/16/2023] [Indexed: 06/26/2023]
Abstract
PURPOSE There is little information on factors that influence the glycemic variability (GV) during the nocturnal and diurnal periods. We aimed to examine the relationship between clinical factors and GV during these two periods. METHODS This cross-sectional study included 134 patients with type 2 diabetes. 24-h changes in blood glucose were recorded by a continuous glucose monitoring system. Nocturnal and diurnal GV were assessed by standard deviation of blood glucose (SDBG), coefficient of variation (CV), and mean amplitude of glycemic excursions (MAGE), respectively. Robust regression analyses were performed to identify the factors associated with GV. Restricted cubic splines were used to determine dose-response relationship. RESULTS During the nocturnal period, age and glycemic level at 12:00 A.M. were positively associated with GV, whereas alanine aminotransferase was negatively associated with GV. During the diurnal period, homeostatic model assessment 2-insulin sensitivity (HOMA2-S) was positively associated with GV, whereas insulin secretion-sensitivity index-2 (ISSI2) was negatively associated with GV. Additionally, we found a J-shape association between the glycemic level at 12:00 A.M. and MAGE, with 9.0 mmol/L blood glucose level as a cutoff point. Similar nonlinear associations were found between ISSI2 and SDBG, and between ISSI2 and MAGE, with ISSI2 value of 175 as a cutoff point. CONCLUSION Factors associated with GV were different between nocturnal and diurnal periods. The cutoff points we found in this study may provide the therapeutic targets for beta-cell function and pre-sleep glycemic level in clinical practice.
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Affiliation(s)
- J Jiang
- Department of Endocrinology, Jining No. 1 People's Hospital, 6 Jiankang Road, Rencheng District, Jining, 272000, Shandong, China
- Postdoctoral of Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Z Xia
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, No.10 Xitoutiao, You'anmen Wai, Fengtai District, Beijing, 100069, China
| | - D Zheng
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, No.10 Xitoutiao, You'anmen Wai, Fengtai District, Beijing, 100069, China
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
| | - Y Li
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, No.10 Xitoutiao, You'anmen Wai, Fengtai District, Beijing, 100069, China
| | - F Li
- Department of Endocrinology, Jining No. 1 People's Hospital, 6 Jiankang Road, Rencheng District, Jining, 272000, Shandong, China
| | - W Wang
- Department of Endocrinology, Jining No. 1 People's Hospital, 6 Jiankang Road, Rencheng District, Jining, 272000, Shandong, China
| | - S Ding
- Department of Endocrinology, Jining No. 1 People's Hospital, 6 Jiankang Road, Rencheng District, Jining, 272000, Shandong, China
| | - J Zhang
- Department of Endocrinology, Jining No. 1 People's Hospital, 6 Jiankang Road, Rencheng District, Jining, 272000, Shandong, China
| | - X Su
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, No.10 Xitoutiao, You'anmen Wai, Fengtai District, Beijing, 100069, China
| | - Q Zhai
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, No.10 Xitoutiao, You'anmen Wai, Fengtai District, Beijing, 100069, China
| | - Y Zuo
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, No.10 Xitoutiao, You'anmen Wai, Fengtai District, Beijing, 100069, China
| | - Y Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, No.10 Xitoutiao, You'anmen Wai, Fengtai District, Beijing, 100069, China
| | - H Y Gaisano
- Departments of Medicine and Physiology, University of Toronto, Toronto, ON, Canada
| | - Y He
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, No.10 Xitoutiao, You'anmen Wai, Fengtai District, Beijing, 100069, China.
- Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, China.
| | - J Sun
- Department of Endocrinology, Jining No. 1 People's Hospital, 6 Jiankang Road, Rencheng District, Jining, 272000, Shandong, China.
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Wang S, Zheng C, Guo D, Chen W, Xie Q, Zhai Q. Dose-related effects of early-life intake of sn-2 palmitate, a specific positionally distributed human milk fatty acid, on the composition and metabolism of the intestinal microbiota. J Dairy Sci 2023; 106:8272-8286. [PMID: 37678794 DOI: 10.3168/jds.2023-23361] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 07/12/2023] [Indexed: 09/09/2023]
Abstract
sn2 Palmitate in human milk plays an important role in the physiological health of infants by reducing mineral loss, improving stool hardness, and relieving constipation. Also, sn-2 palmitate modulates intestinal microbiota. However, it remains unclear whether the effects of sn-2 palmitate on infant gut microbiota are dose-dependent. In this study, we investigated the effects of low, medium, and high doses (600, 1,800, and 5,400 mg/kg body weight, respectively) of sn-2 palmitate on the structure, composition, and metabolic function of intestinal microbes in mice. Our results showed that high doses of sn-2 palmitate significantly modulated α- and β-diversity of the intestinal microbiota. The relative abundance of Lachnospiraceae_NK4A136_group decreased with increasing doses of sn-2 palmitate. In contrast, the abundances of Bacteroidetes phylum, Bacteroides, uncultured_Lachnospiraceae, and uncultured_Muribaculaceae were positively correlated with sn-2 palmitate doses. The number of genes predicted encoding autophagy-yeast, phospholipase D signaling pathway, and pentose and glucuronate interconversion metabolic functions of intestinal microbiota increased with increasing doses of sn-2 palmitate. In addition, low and medium doses of sn-2 palmitate significantly upregulated the arginine and proline metabolic pathways, and high doses of sn-2 palmitate significantly increased purine metabolism. Our results revealed that the effects of sn-2 palmitate intake early in life on the composition and metabolism of the intestinal microbiota of mice showed dose-related differences. The study is expected to provide a scientific basis for the development of infant formulas.
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Affiliation(s)
- S Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - C Zheng
- Heilongjiang Feihe Dairy Co. Ltd., Chaoyang, Beijing 100015, China; PKUHSC-China Feihe Joint Research Institute of Nutrition and Healthy Lifespan Development, Haidian, Beijing 100083, China
| | - D Guo
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - W Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Q Xie
- Heilongjiang Feihe Dairy Co. Ltd., Chaoyang, Beijing 100015, China; PKUHSC-China Feihe Joint Research Institute of Nutrition and Healthy Lifespan Development, Haidian, Beijing 100083, China.
| | - Q Zhai
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
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Chen M, Xiao L, Jia H, Wang S, Jiang X, Lei X, Zhai Q, Lang J. Stereotactic ablative radiotherapy and FAPα-based cancer vaccine suppresses metastatic tumor growth in 4T1 mouse breast cancer. Radiother Oncol 2023; 189:109946. [PMID: 37806560 DOI: 10.1016/j.radonc.2023.109946] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 09/09/2023] [Accepted: 09/30/2023] [Indexed: 10/10/2023]
Abstract
BACKGROUND AND PURPOSE This study tested the hypothesis that a novel combination of stereotactic ablation radiotherapy (SABR) and a cancer vaccine against fibroblast activation protein-alpha (FAPα) can suppress established tumor growth and impede potential metastasis. METHODS The poorly immunogenic metastatic mouse mammary carcinoma 4T1 was used as a model. Mice were randomly assigned to five treatment groups: (1) untreated control, (2) FAPα-based cancer vaccine, (3) SABR, (4) SABR + pCDH (lentiviral control vector), (5) SABR + FAPα-based cancer vaccine (SABR/FAPα-Vax). FAPα-based cancer vaccine were administered subcutaneously every week for a total of three treatments. SABR was delivered to the primary tumor by 3 × 8 Gy after the first vaccination. RESULTS Consistent with the poorly immunogenic nature of 4T1, tumor-bearing mice receiving FAPα-based cancer vaccine or SABR monotherapy showed a modest reduction in tumor volume and increased animal lifespan. In contrast, SABR/FAPα-Vax was well-tolerated, significantly reduced tumor burden, and increased survival compared to monotherapy. The increased survival correlated with inhibition of extracellular matrix (ECM) production, tumor vascularization and lymphangiogenesis. SABR/FAPα-Vax also resulted in an abscopal effect capable of eliminating lung metastases. SABR/FAPα-Vax recruited and activated CD8 + T cells to attack tumor cells and FAPα + stromal cells, and initiated suppressor cell reprogramming, including facilitating macrophage polarization toward an anti-tumor (M1) state, as well as depleting myeloid-derived suppressor cells (MDSCs) and regulatory T cells (Tregs). CONCLUSION These findings provide a novel therapeutic combination of radiation and FAPα-based cancer vaccine with promising results against poorly immunogenic metastatic cancer. This study may pave the way to overcome the therapeutic resistance caused by FAPα + CAFs.
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Affiliation(s)
- Meihua Chen
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.
| | - Ling Xiao
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.
| | - Hongyuan Jia
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.
| | - Shubin Wang
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.
| | - Xiao Jiang
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China; Institute of Isotope, China Institute of Atomic Energy, Beijing, China.
| | - Xudan Lei
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.
| | - Qiming Zhai
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.
| | - Jinyi Lang
- Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, China.
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Li D, Tan X, Zheng L, Tang H, Hu S, Zhai Q, Jing X, Liang P, Zhang Y, He Q, Jian G, Fan D, Ji P, Chen T, Zhang H. A Dual-Antioxidative Coating on Transmucosal Component of Implant to Repair Connective Tissue Barrier for Treatment of Peri-Implantitis. Adv Healthc Mater 2023; 12:e2301733. [PMID: 37660274 DOI: 10.1002/adhm.202301733] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/10/2023] [Indexed: 09/04/2023]
Abstract
Since the microgap between implant and surrounding connective tissue creates the pass for pathogen invasion, sustained pathological stimuli can accelerate macrophage-mediated inflammation, therefore affecting peri-implant tissue regeneration and aggravate peri-implantitis. As the transmucosal component of implant, the abutment therefore needs to be biofunctionalized to repair the gingival barrier. Here, a mussel-bioinspired implant abutment coating containing tannic acid (TA), cerium and minocycline (TA-Ce-Mino) is reported. TA provides pyrogallol and catechol groups to promote cell adherence. Besides, Ce3+ /Ce4+ conversion exhibits enzyme-mimetic activity to remove reactive oxygen species while generating O2 , therefore promoting anti-inflammatory M2 macrophage polarization to help create a regenerative environment. Minocycline is involved on the TA surface to create local drug storage for responsive antibiosis. Moreover, the underlying therapeutic mechanism is revealed whereby the coating exhibits exogenous antioxidation from the inherent properties of Ce and TA and endogenous antioxidation through mitochondrial homeostasis maintenance and antioxidases promotion. In addition, it stimulates integrin to activate PI3K/Akt and RhoA/ROCK pathways to enhance VEGF-mediated angiogenesis and tissue regeneration. Combining the antibiosis and multidimensional orchestration, TA-Ce-Mino repairs soft tissue barriers and effector cell differentiation, thereby isolating the immune microenvironment from pathogen invasion. Consequently, this study provides critical insight into the design and biological mechanism of abutment surface modification to prevent peri-implantitis.
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Affiliation(s)
- Dize Li
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Xi Tan
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Liwen Zheng
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Han Tang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Shanshan Hu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Qiming Zhai
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Xuan Jing
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, P. R. China
| | - Panpan Liang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Yuxin Zhang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Qingqing He
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Guangyu Jian
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Dongqi Fan
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Ping Ji
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Tao Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Hongmei Zhang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
- Molecular Oncology Laboratory, Department of Orthopedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, 60637, USA
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Chen X, He Q, Zhai Q, Tang H, Li D, Zhu X, Zheng X, Jian G, Cannon RD, Mei L, Wang S, Ji P, Song J, Chen T. Adaptive Nanoparticle-Mediated Modulation of Mitochondrial Homeostasis and Inflammation to Enhance Infected Bone Defect Healing. ACS Nano 2023; 17:22960-22978. [PMID: 37930276 DOI: 10.1021/acsnano.3c08165] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Infected bone defects (IBDs) exhibit impaired healing due to excessive inflammation triggered by pathogen-associated molecular patterns (PAMPs) from bacteria. As a vital factor in orchestrating immune responses, mitochondrial homeostasis maintenance is central to inflammation blockade. This research developed a chameleon-like nanoplatform by covering hydroxyapatite nanoparticles with a cerium ion coordinated tannic acid supramolecular network (HA@Ce-TA), which adaptively functions to regulate mitochondrial homeostasis based on intra- and extracellular environments. Extracellularly, acidic conditions activate HA@Ce-TA's peroxidase/oxidase-mimicking activity to produce reactive oxygen species (ROS), and external near-infrared (NIR) irradiation excites nanoscale Ce-TA to produce hyperthermia, which is found and explained by chemical computation. ROS production with photothermal therapy can eliminate bacteria effectively and reduce mitochondrial stress. Intracellularly, HA@Ce-TA remodels mitochondrial dynamics by upregulating mitochondrial fusion genes and eliminates excessive ROS by mimicking superoxidase/catalase. Consequently, this comprehensive modulation of mitochondrial homeostasis inhibits inflammasome overactivation. In vitro and in vivo studies showed HA@Ce-TA can modulate the mitochondria-centered inflammatory cascade to enhance IBD treatment, highlighting the potential of engineering nanotherapeutics to recalibrate mitochondrial homeostasis as an infected disease-modifying intervention.
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Affiliation(s)
- Xu Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Qingqing He
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Qiming Zhai
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Han Tang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Dize Li
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Xingyu Zhu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Xinhui Zheng
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Guangyu Jian
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Richard D Cannon
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9054, New Zealand
| | - Li Mei
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin 9054, New Zealand
| | - Shan Wang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Ping Ji
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Jinlin Song
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
| | - Tao Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, P. R. China
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7
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Jian G, Li D, Ying Q, Chen X, Zhai Q, Wang S, Mei L, Cannon RD, Ji P, Liu W, Wang H, Chen T. Dual Photo-Enhanced Interpenetrating Network Hydrogel with Biophysical and Biochemical Signals for Infected Bone Defect Healing. Adv Healthc Mater 2023; 12:e2300469. [PMID: 37462929 DOI: 10.1002/adhm.202300469] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/19/2023] [Indexed: 07/29/2023]
Abstract
The healing of infected bone defects (IBD) is a complex physiological process involving a series of spatially and temporally overlapping events, including pathogen clearance, immunological modulation, vascularization, and osteogenesis. Based on the theory that bone healing is regulated by both biochemical and biophysical signals, in this study, a copper doped bioglass (CuBGs)/methacryloyl-modified gelatin nanoparticle (MA-GNPs)/methacrylated silk fibroin (SilMA) hybrid hydrogel is developed to promote IBD healing. This hybrid hydrogel demonstrates a dual-photocrosslinked interpenetrating network mechanism, wherein the photocrosslinked SilMA as the main network ensures structural integrity, and the photocrosslinked MA-GNPs colloidal network increases strength and dissipates loading forces. In an IBD model, the hydrogel exhibits excellent biophysical characteristics, such as adhesion, adaptation to irregular defect shapes, and in situ physical reinforcement. At the same time, by sequentially releasing bioactive ions such as Cu2+ , Ca2+ , and Si2+ ions from CuBGs on demand, the hydrogel spatiotemporally coordinates antibacterial, immunomodulatory and bone remodeling events, efficiently removing infection and accelerating bone repair without the use of antibiotics or exogenous recombinant proteins. Therefore, the hybrid hydrogel can be used as a simple and effective method for the treatment of IBD.
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Affiliation(s)
- Guangyu Jian
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, P. R. China
| | - Dize Li
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, P. R. China
| | - Qiwei Ying
- Key State Laboratory of Fine Chemicals, School of Bioengineering, Dalian University of Technology, Dalian, 116023, P. R. China
| | - Xu Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, P. R. China
| | - Qiming Zhai
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, P. R. China
| | - Si Wang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, P. R. China
| | - Li Mei
- Department of Oral Sciences, Sir John Walsh Research Institute Faculty of Dentistry, University of Otago, Dunedin, 9054, New Zealand
| | - Richard D Cannon
- Department of Oral Sciences, Sir John Walsh Research Institute Faculty of Dentistry, University of Otago, Dunedin, 9054, New Zealand
| | - Ping Ji
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, P. R. China
| | - Wenzhao Liu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, P. R. China
| | - Huanan Wang
- Key State Laboratory of Fine Chemicals, School of Bioengineering, Dalian University of Technology, Dalian, 116023, P. R. China
| | - Tao Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, P. R. China
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8
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Hu S, Yang Z, Zhai Q, Li D, Zhu X, He Q, Li L, Cannon RD, Wang H, Tang H, Ji P, Chen T. An All-in-One "4A Hydrogel": through First-Aid Hemostatic, Antibacterial, Antioxidant, and Angiogenic to Promoting Infected Wound Healing. Small 2023:e2207437. [PMID: 36978243 DOI: 10.1002/smll.202207437] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/08/2023] [Indexed: 06/18/2023]
Abstract
Currently used wound dressings are ineffective. Hence, there is a need to develop introduce a high-performance medicament with multiple functions including rapid hemostasis and excellent antibacterial activity to meet the growing worldwide demand for wound healing products. Here, inspired by the strong adhesion of mussels and the enzyme-mimicking activity of nanometallic biomaterials, the authors developed an injectable hydrogel to overcome multiple limitations of current wound dressings. The hydrogel is synthesized via esterification reaction between poly(vinyl alcohol) (PVA) and 3,4-dihydroxyphenylalanine (DOPA), followed by catechol-metal coordination between Cu2+ and the catechol groups of DOPA to form a PVA-DOPA-Cu (PDPC) hydrogel. The PDPC hydrogel possesses excellent tissue adhesive, antioxidative, photothermal, antibacterial, and hemostatic properties. The hydrogel rapidly and efficiently stopped bleeding under different traumatic conditions, including otherwise-lethal liver injury, high-pressure carotid artery rupture, and even fatal cardiac penetration injuries in animal models. Furthermore, it is demonstrated that the PDPC hydrogel affected high-performance wound repair and tissue regeneration by accelerating re-epithelialization, promoting collagen deposition, regulating inflammation, and contributing to vascularization. The results show that PDPC hydrogel is a promising candidate for rapid hemorrhage control and efficient wound healing in multiple clinical applications.
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Affiliation(s)
- Shanshan Hu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Zixin Yang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Qiming Zhai
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Dize Li
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Xingyu Zhu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Qingqing He
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Lingjie Li
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Richard D Cannon
- Department of Oral Sciences, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, 9054, New Zealand
| | - Huanan Wang
- Key State Laboratory of Fine Chemicals, School of Bioengineering, Dalian University of Technology, Dalian, 116023, P. R. China
| | - Han Tang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Ping Ji
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
| | - Tao Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing Medical University, Chongqing, 401147, P. R. China
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9
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Xiao X, Chen J, Zhai Q, Xin L, Zheng X, Wang S, Song J. Suppressing STAT3 activation impairs bone formation during maxillary expansion and relapse. J Appl Oral Sci 2023; 31:e20230009. [PMID: 37162107 PMCID: PMC10167947 DOI: 10.1590/1678-7757-2023-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/22/2023] [Indexed: 05/11/2023] Open
Abstract
OBJECTIVES The mid-palatal expansion technique is commonly used to correct maxillary constriction in dental clinics. However, there is a tendency for it to relapse, and the key molecules responsible for modulating bone formation remain elusive. Thus, this study aimed to investigate whether signal transducer and activator of transcription 3 (STAT3) activation contributes to osteoblast-mediated bone formation during palatal expansion and relapse. METHODOLOGY In total, 30 male Wistar rats were randomly allocated into Ctrl (control), E (expansion only), and E+Stattic (expansion plus STAT3-inhibitor, Stattic) groups. Micro-computed tomography, micromorphology staining, and immunohistochemistry of the mid-palatal suture were performed on days 7 and 14. In vitro cyclic tensile stress (10% magnitude, 0.5 Hz frequency, and 24 h duration) was applied to rat primary osteoblasts and Stattic was administered for STAT3 inhibition. The role of STAT3 in mechanical loading-induced osteoblasts was confirmed by alkaline phosphatase (ALP), alizarin red staining, and western blots. RESULTS The E group showed greater arch width than the E+Stattic group after expansion. The differences between the two groups remained significant after relapse. We found active bone formation in the E group with increased expression of ALP, COL-I, and Runx2, although the expression of osteogenesis-related factors was downregulated in the E+stattic group. After STAT3 inhibition, expansive force-induced bone resorption was attenuated, as TRAP staining demonstrated. Furthermore, the administration of Stattic in vitro partially suppressed tensile stress-enhanced osteogenic markers in osteoblasts. CONCLUSIONS STAT3 inactivation reduced osteoblast-mediated bone formation during palatal expansion and post-expansion relapse, thus it may be a potential therapeutic target to treat force-induced bone formation.
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Affiliation(s)
- Xiaoyue Xiao
- Chongqing Medical University, College of Stomatology, Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Municipal Key Laboratory of Oral Biomedical Engineering of Chongqing Higher Education, Chongqing, China
| | - Jianwei Chen
- Sichuan University, West China Hospital of Stomatology, State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Diseases, Chengdu, China
| | - Qiming Zhai
- Chongqing Medical University, College of Stomatology, Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Municipal Key Laboratory of Oral Biomedical Engineering of Chongqing Higher Education, Chongqing, China
| | - Liangjing Xin
- Chongqing Medical University, College of Stomatology, Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Municipal Key Laboratory of Oral Biomedical Engineering of Chongqing Higher Education, Chongqing, China
| | - Xinhui Zheng
- Chongqing Medical University, College of Stomatology, Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Municipal Key Laboratory of Oral Biomedical Engineering of Chongqing Higher Education, Chongqing, China
| | - Si Wang
- Chongqing Medical University, College of Stomatology, Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Municipal Key Laboratory of Oral Biomedical Engineering of Chongqing Higher Education, Chongqing, China
| | - Jinlin Song
- Chongqing Medical University, College of Stomatology, Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Municipal Key Laboratory of Oral Biomedical Engineering of Chongqing Higher Education, Chongqing, China
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10
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Xin L, Wen Y, Song J, Chen T, Zhai Q. Bone regeneration strategies based on organelle homeostasis of mesenchymal stem cells. Front Endocrinol (Lausanne) 2023; 14:1151691. [PMID: 37033227 PMCID: PMC10081449 DOI: 10.3389/fendo.2023.1151691] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/06/2023] [Indexed: 04/11/2023] Open
Abstract
The organelle modulation has emerged as a crucial contributor to the organismal homeostasis. The mesenchymal stem cells (MSCs), with their putative functions in maintaining the regeneration ability of adult tissues, have been identified as a major driver to underlie skeletal health. Bone is a structural and endocrine organ, in which the organelle regulation on mesenchymal stem cells (MSCs) function has most been discovered recently. Furthermore, potential treatments to control bone regeneration are developing using organelle-targeted techniques based on manipulating MSCs osteogenesis. In this review, we summarize the most current understanding of organelle regulation on MSCs in bone homeostasis, and to outline mechanistic insights as well as organelle-targeted approaches for accelerated bone regeneration.
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Affiliation(s)
- Liangjing Xin
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yao Wen
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Jinlin Song
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- *Correspondence: Qiming Zhai, ; Tao Chen, ; Jinlin Song,
| | - Tao Chen
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- *Correspondence: Qiming Zhai, ; Tao Chen, ; Jinlin Song,
| | - Qiming Zhai
- College of Stomatology, Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
- *Correspondence: Qiming Zhai, ; Tao Chen, ; Jinlin Song,
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11
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Guo J, Zhou F, Liu Z, Cao Y, Zhao W, Zhang Z, Zhai Q, Jin Y, Li B, Jin F. Exosome‐shuttled mitochondrial transcription factor A mRNA promotes the osteogenesis of dental pulp stem cells through mitochondrial oxidative phosphorylation activation. Cell Prolif 2022; 55:e13324. [DOI: 10.1111/cpr.13324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/18/2022] [Accepted: 07/21/2022] [Indexed: 12/11/2022] Open
Affiliation(s)
- Jia Guo
- Department of Orthodontics, School of Stomatology The Fourth Military Medical University Xi'an China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Feng Zhou
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Zhi Liu
- Department of Orthodontics, School of Stomatology The Fourth Military Medical University Xi'an China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Yuan Cao
- Department of Orthodontics, School of Stomatology The Fourth Military Medical University Xi'an China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Wanming Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Zheru Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Qiming Zhai
- Department of Orthodontics, School of Stomatology The Fourth Military Medical University Xi'an China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Yan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Bei Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
| | - Fang Jin
- Department of Orthodontics, School of Stomatology The Fourth Military Medical University Xi'an China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology The Fourth Military Medical University Xi'an China
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12
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Zhang W, Zhai Q, Li M, Huang S, Sun Z, Yan Z, Li J, Li L, Li Y. Anti-Cancer Effects of Disulfiram in Cervical Cancer Cell Lines Are Mediated by Both Autophagy and Apoptosis. Bull Exp Biol Med 2022; 172:642-648. [PMID: 35353287 DOI: 10.1007/s10517-022-05447-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 06/04/2021] [Indexed: 12/24/2022]
Abstract
Disulfiram (DSF), which is used to treat alcohol dependence, has been reported to have anticancer effects in various malignant tumors. We studied the anti-cancer effects and mechanism of action of DSF on cervical cancer cell lines HeLa and SiHa. The anti-cancer effects of DSF were confirmed in vivo using a xenograft tumor model. The anti-cancer effects of DSF in human head and neck squamous cell carcinoma were found to be copper (Cu)-dependent. The anti-tumor effects of DSF/Cu were time- and dose-dependent and were mediated by both autophagy and apoptosis. DSF/Cu shows stronger cytotoxicity to adenocarcinoma cell lines with higher malignant behavior, and valosin-containing protein (VCP) is its potential target. The cytotoxic effect of DSF/Cu against cervical cancer cell lines in vitro was mediated by apoptosis and autophagy simultaneously. Analysis of the clinical relevance of DSF/Cu on a xenograft animal model showed that DSF markedly stimulated tumor necrosis. DSF may contribute to improved survival of patients with cervical cancer. The antitumor characteristic of DSF can be used in the development of a new drug for advanced and refractory patients with cervical cancer.
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Affiliation(s)
- W Zhang
- Department of Obstetrics and Gynecology, First Medical Center, Quezon, Philippines
| | - Q Zhai
- Department of Obstetrics and Gynecology, First Medical Center, Quezon, Philippines
| | - M Li
- Department of Obstetrics and Gynecology, First Medical Center, Quezon, Philippines
| | - S Huang
- Wound Healing and Cell Biology Laboratory, Institute of Basic Medical Sciences, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Z Sun
- Department of Obstetrics and Gynecology, First Medical Center, Quezon, Philippines
| | - Z Yan
- Department of Obstetrics and Gynecology, First Medical Center, Quezon, Philippines
| | - J Li
- Department of Obstetrics and Gynecology, First Medical Center, Quezon, Philippines
| | - L Li
- Department of Obstetrics and Gynecology, First Medical Center, Quezon, Philippines.
| | - Y Li
- Department of Obstetrics and Gynecology, First Medical Center, Quezon, Philippines
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13
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Zhai Q, Chen X, Fei D, Guo X, He X, Zhao W, Shi S, Gooding JJ, Jin F, Jin Y, Li B. Nanorepairers Rescue Inflammation-Induced Mitochondrial Dysfunction in Mesenchymal Stem Cells. Adv Sci (Weinh) 2022; 9:e2103839. [PMID: 34894103 PMCID: PMC8811813 DOI: 10.1002/advs.202103839] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/30/2021] [Indexed: 05/29/2023]
Abstract
Mitochondrial dysfunction in tissue-specific mesenchymal stem cells (MSCs) plays a critical role in cell fate and the morbidity of chronic inflammation-associated bone diseases, such as periodontitis and osteoarthritis. However, there is still no effective method to cure chronic inflammation-associated bone diseases by physiologically restoring the function of mitochondria and MSCs. Herein, it is first found that chronic inflammation leads to excess Ca2+ transfer from the endoplasmic reticulum to mitochondria, which causes mitochondrial calcium overload and further damage to mitochondria. Furthermore, damaged mitochondria continuously accumulate in MSCs due to the inhibition of mitophagy by activating the Wnt/β-catenin pathway under chronic inflammatory conditions, impairing the differentiation of MSCs. Based on the mechanistic discovery, intracellular microenvironment (esterase and low pH)-responsive nanoparticles are fabricated to capture Ca2+ around mitochondria in MSCs to regulate MSC mitochondrial calcium flux against mitochondrial dysfunction. Furthermore, the same nanoparticles are able to deliver siRNA to MSCs to inhibit the Wnt/β-catenin pathway and regulate mitophagy of the originally dysfunctional mitochondria. These precision-engineered nanoparticles, referred to as "nanorepairers," physiologically restore the function of mitochondria and MSCs, resulting in effective therapy for periodontitis and osteoarthritis. The concept can potentially be expanded to the treatment of other diseases via mitochondrial quality control intervention.
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Affiliation(s)
- Qiming Zhai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyFourth Military Medical UniversityXi'anShaanxi710032China
- Department of OrthodonticsSchool of StomatologyFourth Military Medical UniversityXi'anShaanxi710032China
| | - Xin Chen
- Department of Chemical EngineeringShaanxi Key Laboratory of Energy Chemical Process IntensificationInstitute of Polymer Science in Chemical EngineeringSchool of Chemical Engineering and TechnologyXi'an Jiao Tong UniversityXi'anShaanxi710049China
| | - Dongdong Fei
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyFourth Military Medical UniversityXi'anShaanxi710032China
| | - Xiaoyan Guo
- Department of Chemical EngineeringShaanxi Key Laboratory of Energy Chemical Process IntensificationInstitute of Polymer Science in Chemical EngineeringSchool of Chemical Engineering and TechnologyXi'an Jiao Tong UniversityXi'anShaanxi710049China
| | - Xiaoning He
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyFourth Military Medical UniversityXi'anShaanxi710032China
| | - Wanmin Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyFourth Military Medical UniversityXi'anShaanxi710032China
| | - Songtao Shi
- South China Center of Craniofacial Stem Cell ResearchGuanghua School of StomatologySun Yat‐sen UniversityGuangzhouGuangdong510080China
| | - John Justin Gooding
- School of Chemistry and Australian Centre for Nano‐MedicineUniversity of New South WalesSydneyNSW2052Australia
| | - Fang Jin
- Department of OrthodonticsSchool of StomatologyFourth Military Medical UniversityXi'anShaanxi710032China
| | - Yan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyFourth Military Medical UniversityXi'anShaanxi710032China
| | - Bei Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral DiseasesCenter for Tissue EngineeringSchool of StomatologyFourth Military Medical UniversityXi'anShaanxi710032China
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14
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Ebrahimi S, Patel S, McGee L, Garcia J, Ma D, Foote R, Garces Y, Neben Wittich M, Price K, Schmitt A, Zhai Q, May B, Nagel T, Hinni M, Routman D, Chintakuntlawar A, Rwigema J. Clinical Outcomes of Histologically Verified Salivary Ductal Carcinomas: Retrospective Analysis of 89 Patients Treated Over 47 Years. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Li Y, Liu A, Zhang L, Wang Z, Hui N, Zhai Q, Zhang L, Jin Z, Jin F. Epithelial Cell Rests of Malassez Provide a Favorable Microenvironment for Ameliorating the Impaired Osteogenic Potential of Human Periodontal Ligament Stem Cells. Front Physiol 2021; 12:735234. [PMID: 34707510 PMCID: PMC8542701 DOI: 10.3389/fphys.2021.735234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 07/02/2021] [Accepted: 09/14/2021] [Indexed: 12/26/2022] Open
Abstract
Human periodontal ligament stromal/stem cells (PDLSCs) are ideal candidates for periodontal regeneration and are of significant importance in clinical practice. However, PDLSCs derived from diseased microenvironments exert impaired behavior, which leads to the failure of periodontal regeneration. The epithelial cell rests of Malassez (ERM), which are involved in periodontal homeostasis, are residual cells from Hertwig's epithelial root sheath (HERS). However, the function of ERM remains largely unknown. Therefore, the aim of this study was to evaluate the effect of ERM on the osteogenic potential of PDLSCs from an impaired microenvironment. PDLSCs from healthy donors (H-PDLSCs), periodontitis donors (P-PDLSCs) and human ERM were harvested. Osteogenic evaluation showed a lower osteogenic potential of P-PDLSCs compared to that of H-PDLSCs. Then, we co-cultured ERM with P-PDLSCs, and the data showed that ERM promoted the expression of osteogenic genes and proteins in P-PDLSCs. In addition, we collected the PDLSCs from aged donors (A-PDLSCs) and analyzed the osteogenesis capacity of the A-PDLSCs and A-PDLSCs + ERM groups, which displayed similar results to P-PDLSCs. Finally, we evaluated the Wnt pathway, which is associated with osteogenic differentiation of stromal/stem cells, in A-PDLSCs + ERM and P-PDLSCs + ERM groups, which indicated that suppression of the Wnt pathway may result in an increase in the osteogenic properties of A-PDLSCs + ERM and P-PDLSCs + ERM groups. Taken together, the above findings shed new light on the function of ERM and provide a novel therapeutic for optimizing PDLSCs-based periodontal regeneration.
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Affiliation(s)
- Yanjiao Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontic, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Anqi Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontic, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,Department of Stomatology, The 985 Hospital of PLA, Taiyuan, China
| | - Liqiang Zhang
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Zhiwei Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontic, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Nana Hui
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontic, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Qiming Zhai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontic, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Lishu Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontic, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Zuolin Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontic, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Fang Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontic, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
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Fei D, Xia Y, Zhai Q, Wang Y, Zhou F, Zhao W, He X, Wang Q, Jin Y, Li B. Exosomes Regulate Interclonal Communication on Osteogenic Differentiation Among Heterogeneous Osteogenic Single-Cell Clones Through PINK1/Parkin-Mediated Mitophagy. Front Cell Dev Biol 2021; 9:687258. [PMID: 34604210 PMCID: PMC8484762 DOI: 10.3389/fcell.2021.687258] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 03/29/2021] [Accepted: 08/24/2021] [Indexed: 11/27/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are intrinsically heterogeneous and are comprised of distinct subpopulations that differ in their differentiation potential. A deeper understanding of the heterogeneity and intercellular communication within these heterogeneous subpopulations has significant implications for the potential of MSC-based therapy from the bench to the clinic. Here, we focused on the clonal osteogenic heterogeneity of periodontal ligament stem cells (PDLSCs) and explored how interclonal communication affects the osteogenic differentiation among these heterogeneous single-cell colonies (SCCs), and sought to determine the underlying mechanisms. Alkaline phosphatase (ALP) and Alizarin red staining identified the presence of SCCs with high (H-SCCs) and low osteogenic ability (L-SCCs). Conditioned medium derived from H-SCCs (H-CM) promoted mineralized nodule formation to a greater extent than that derived from L-SCCs (L-CM), which served as the target cells (TCs). However, treatment with the exosome biogenesis/release inhibitor GW4869 reduced the H-CM- and L-CM-related osteogenic differentiation-promoting potential. We further found that exosomes secreted by H-SCCs (H-Exo) were superior to those secreted by L-SCCs (L-Exo) in promoting the osteogenic differentiation of TCs. Mechanistically, TCs stimulated with H-CM and H-Exo exhibited higher levels of PINK1/Parkin-mediated mitophagy, while gain- and loss-of-function experiments showed that PINK1/Parkin-mediated mitophagy was positively associated with SCC osteogenic differentiation. Furthermore, PINK1 knock-down in H-Exo- and L-Exo-stimulated TCs inhibited their osteogenic differentiation through inhibiting PINK1/Parkin-mediated mitophagy. Our study uncovers a previously unrecognized mechanism that an exosome-mediated PINK1/Parkin-dependent mitophagy regulates interclonal communication among SCCs with osteogenic heterogeneity.
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Affiliation(s)
- Dongdong Fei
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, 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, The Fourth Military Medical University, Xi'an, China
| | - Yanmin Xia
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Qiming Zhai
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China.,State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yazheng Wang
- 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, The Fourth Military Medical University, Xi'an, China
| | - Feng Zhou
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Wanmin Zhao
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Xiaoning He
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Qintao Wang
- 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, The Fourth Military Medical University, Xi'an, China
| | - Yan Jin
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Bei Li
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China
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Zhai Q, Freund-Levi Y, Horn A, Fridenberger AC, Lager E, Montgomery S, Persson J. Physical training for patients with depression and anxiety - a randomized controlled study. Eur Psychiatry 2021. [PMCID: PMC9480390 DOI: 10.1192/j.eurpsy.2021.1828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
IntroductionPharmaceutical treatment and psychotherapy constitute the most common treatment methods for depression and anxiety. Physical training has been shown to have comparable effect to cognitive behavioral therapy in treatment of mild to moderate depression and anxiety. Physically active individuals also show lower risks to develop depression and relapse in depression.ObjectivesThe objectives are to evaluate how physical activity can affect depressive and anxiety symptoms, by examining biomarkers in the blood and from the gut and also by measuring cognitive functions. Hopefully, this can lead to new treatment strategies for patients with depression and anxiety.Methods102 patients are randomized to two groups and undergo 12 weeks intervention as add-on to standard outpatient psychiatric treatment. The first group will participate in physical training three times per week and the other group will receive relaxation therapy on a weekly basis. Daily activity intensity will be measured before and at the last week of intervention with an accelerometer. Blood and faeces sample collection, symptom grading by clinician together with self-rating scales and cognitive screening will be performed at baseline, week 12 and one year of follow-up. The cognitive screenings are performed digitally in cooperation with Mindmore.ResultsThe RCT is currently recruiting patients at the Department of Psychiatry of Örebro University Hospital.Conclusions
The project aims to be holistic in its approach, combining the defining clinical psychiatric symptoms in patients who have both depression and anxiety with the finding and evaluation of new biomarkers from blood and gut to improve cognitive functions.DisclosureNo significant relationships.
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Fei D, Wang Y, Zhai Q, Zhang X, Zhang Y, Wang Y, Li B, Wang Q. KAT6A regulates stemness of aging bone marrow-derived mesenchymal stem cells through Nrf2/ARE signaling pathway. Stem Cell Res Ther 2021; 12:104. [PMID: 33541408 PMCID: PMC7860225 DOI: 10.1186/s13287-021-02164-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 11/03/2020] [Accepted: 01/12/2021] [Indexed: 12/13/2022] Open
Abstract
Background This study aimed to explore the effect of KAT6A on the decreased stemness of aging bone marrow-derived mesenchymal stem cells (BMSCs) and its potential mechanism. Methods The acetylation level and KAT6A expression of BMSCs from the young (YBMSCs) and the old (OBMSCs) were examined. Gain- and loss-of-function experiments were performed to determine the effect of KAT6A on BMSC proliferation, colony formation, and osteogenic differentiation. The effect of KAT6A on Nrf2/ARE signaling pathway was investigated after KAT6A inhibition in YBMSCs or overexpression in OBMSCs, and the role of Nrf2/ARE signaling pathway on stemness was examined by investigating proliferation, colony formation, and osteogenic differentiation. Further in vivo study was performed to explore osteogenesis ability of OBMSCs after modulation of KAT6A and Nrf2/ARE pathway through cell sheet technology. Results The acetylation level and KAT6A expression of OBMSCs were decreased, and KAT6A downregulation resulted in decreased proliferation, colony formation, and osteogenic differentiation of OBMSCs. Mechanically, KAT6A was found to regulate Nrf2/ARE signaling pathway and inhibit ROS accumulation in OBMSCs, thus promoting proliferation, colony formation, and osteogenic differentiation of OBMSCs. Further study demonstrated that KAT6A could promote osteogenesis of OBMSCs by regulating Nrf2/ARE signaling pathway. Conclusions Downregulation of KAT6A resulted in the decreased stemness of OBMSCs by inhibiting the Nrf2/ARE signaling pathway. Graphical abstract KAT6A was downregulated in aging bone marrow-derived mesenchymal stem cells (BMSCs), and downregulation of KAT6A resulted in Nrf2/ARE signaling pathway inhibition and ROS accumulation, thus leading to decreased stemness of aging BMSCs.
![]() Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02164-5.
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Affiliation(s)
- Dongdong Fei
- 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, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Yazheng Wang
- 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, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Qiming Zhai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Xige Zhang
- 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, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Yang Zhang
- 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, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Yang Wang
- 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, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Bei Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China.
| | - Qintao Wang
- 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, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China.
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19
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Zhai Q, Paga I, Baity-Jesi M, Calore E, Cruz A, Fernandez LA, Gil-Narvion JM, Gonzalez-Adalid Pemartin I, Gordillo-Guerrero A, Iñiguez D, Maiorano A, Marinari E, Martin-Mayor V, Moreno-Gordo J, Muñoz-Sudupe A, Navarro D, Orbach RL, Parisi G, Perez-Gaviro S, Ricci-Tersenghi F, Ruiz-Lorenzo JJ, Schifano SF, Schlagel DL, Seoane B, Tarancon A, Tripiccione R, Yllanes D. Scaling Law Describes the Spin-Glass Response in Theory, Experiments, and Simulations. Phys Rev Lett 2020; 125:237202. [PMID: 33337211 DOI: 10.1103/physrevlett.125.237202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/21/2020] [Indexed: 06/12/2023]
Abstract
The correlation length ξ, a key quantity in glassy dynamics, can now be precisely measured for spin glasses both in experiments and in simulations. However, known analysis methods lead to discrepancies either for large external fields or close to the glass temperature. We solve this problem by introducing a scaling law that takes into account both the magnetic field and the time-dependent spin-glass correlation length. The scaling law is successfully tested against experimental measurements in a CuMn single crystal and against large-scale simulations on the Janus II dedicated computer.
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Affiliation(s)
- Q Zhai
- Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA
| | - I Paga
- Dipartimento di Fisica, Sapienza Università di Roma, INFN, Sezione di Roma I-00185, Italy
- Departamento de Física Teórica, Universidad Complutense, 28040 Madrid, Spain
| | - M Baity-Jesi
- Eawag, Überlandstrasse 133, CH-8600 Dübendorf, Switzerland
| | - E Calore
- Dipartimento di Fisica e Scienze della Terra, Università di Ferrara e INFN, Sezione di Ferrara, I-44122 Ferrara, Italy
| | - A Cruz
- Departamento de Física Teórica, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
| | - L A Fernandez
- Departamento de Física Teórica, Universidad Complutense, 28040 Madrid, Spain
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
| | - J M Gil-Narvion
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
| | | | - A Gordillo-Guerrero
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
- Departamento de Ingeniería Eléctrica, Electrónica y Automática, Universidad de Extremadura, 10003 Cáceres, Spain
- Instituto de Computación Científica Avanzada (ICCAEx), Universidad de Extremadura, 06006 Badajoz, Spain
| | - D Iñiguez
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
- Fundación ARAID, Diputación General de Aragón, Zaragoza, Spain
| | - A Maiorano
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli studi di Siena, 53100 Siena, Italy
- INFN, Sezione di Roma 1, I-00185 Rome, Italy
| | - E Marinari
- INFN, Sezione di Roma 1, I-00185 Rome, Italy
- Dipartimento di Fisica, Sapienza Università di Roma, and CNR-Nanotec, I-00185 Rome, Italy
| | - V Martin-Mayor
- Departamento de Física Teórica, Universidad Complutense, 28040 Madrid, Spain
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
| | - J Moreno-Gordo
- Departamento de Física Teórica, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
| | - A Muñoz-Sudupe
- Departamento de Física Teórica, Universidad Complutense, 28040 Madrid, Spain
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
| | - D Navarro
- Departamento de Ingeniería, Electrónica y Comunicaciones and I3A, Universidad de Zaragoza, 50018 Zaragoza, Spain
| | - R L Orbach
- Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, USA
| | - G Parisi
- INFN, Sezione di Roma 1, I-00185 Rome, Italy
- Dipartimento di Fisica, Sapienza Università di Roma, INFN, and CNR-Nanotec, I-00185 Rome, Italy
| | - S Perez-Gaviro
- Departamento de Física Teórica, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
- Escuela Universitaria Politécnica-La Almunia, 50100 La Almunia de Doña Godina, Zaragoza, Spain
| | - F Ricci-Tersenghi
- INFN, Sezione di Roma 1, I-00185 Rome, Italy
- Dipartimento di Fisica, Sapienza Università di Roma, and CNR-Nanotec, I-00185 Rome, Italy
| | - J J Ruiz-Lorenzo
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
- Instituto de Computación Científica Avanzada (ICCAEx), Universidad de Extremadura, 06006 Badajoz, Spain
- Departamento de Física, Universidad de Extremadura, 06006 Badajoz, Spain
| | - S F Schifano
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Ferrara e INFN Sezione di Ferrara, I-44122 Ferrara, Italy
| | - D L Schlagel
- Division of Materials Science and Engineering, Ames Laboratory, Ames, Iowa 50011, USA
| | - B Seoane
- Departamento de Física Teórica, Universidad Complutense, 28040 Madrid, Spain
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
| | - A Tarancon
- Departamento de Física Teórica, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
| | - R Tripiccione
- Dipartimento di Fisica e Scienze della Terra, Università di Ferrara e INFN, Sezione di Ferrara, I-44122 Ferrara, Italy
| | - D Yllanes
- Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), 50018 Zaragoza, Spain
- Chan Zuckerberg Biohub, San Francisco, California 94158, USA
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Guo Y, Zhang C, Shang FF, Luo M, You Y, Zhai Q, Xia Y, Suxin L. Ketogenic Diet Ameliorates Cardiac Dysfunction via Balancing Mitochondrial Dynamics and Inhibiting Apoptosis in Type 2 Diabetic Mice. Aging Dis 2020; 11:229-240. [PMID: 32257538 PMCID: PMC7069456 DOI: 10.14336/ad.2019.0510] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [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: 02/21/2019] [Accepted: 05/10/2019] [Indexed: 12/15/2022] Open
Abstract
The ketogenic diet (KD) has been widely used in clinical studies and shown to hace an anti-diabetic effect, but the underlying mechanisms have not been fully elaborated. Our aim was to investigate the effects and the underling mechanisms of the KD on cardiac function in db/db mice. In the present study, db/db mice were subjected to a normal diet (ND) or KD. Fasting blood glucose, cardiac function and morphology, mitochondrial dynamics, oxidative stress, and apoptosis were measured 8 weeks post KD treatment. Compared with the ND, the KD improved glycemic control and protected against diabetic cardiomyopathy in db/db mice, and improved mitochondrial function, as well as reduced oxidative stress were observed in hearts. In addition, KD treatment exerted an anti-apoptotic effect in the heart of db/db mice. Further data showed that the PI3K/Akt pathway was involved in this protective effect. Our data demonstrated that KD treatment ameliorates cardiac dysfunction by inhibiting apoptosis via activating the PI3K-Akt pathway in type 2 diabetic mice, suggesting that the KD is a promising lifestyle intervention to protect against diabetic cardiomyopathy.
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Affiliation(s)
- Yongzheng Guo
- 1Division of cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Cheng Zhang
- 2Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Fei-Fei Shang
- 3Institute of Life Science, Chongqing Medical University, Chongqing 400016, China
| | - Minghao Luo
- 1Division of cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yuehua You
- 1Division of cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Qiming Zhai
- 4State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Shaanxi 710032, China
| | - Yong Xia
- 1Division of cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.,3Institute of Life Science, Chongqing Medical University, Chongqing 400016, China.,5Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, The Ohio State University College of Medicine, OH 43210, USA
| | - Luo Suxin
- 1Division of cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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21
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Zhang Q, Li Q, Zhu J, Guo H, Zhai Q, Li B, Jin Y, He X, Jin F. Comparison of therapeutic effects of different mesenchymal stem cells on rheumatoid arthritis in mice. PeerJ 2019; 7:e7023. [PMID: 31198641 PMCID: PMC6553443 DOI: 10.7717/peerj.7023] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [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: 01/21/2019] [Accepted: 04/25/2019] [Indexed: 12/13/2022] Open
Abstract
Background Rheumatoid arthritis (RA) is a chronic and nonspecific autoimmune disease, which leads to joint destruction and deformity. To investigate the potential of human mesenchymal stem cells (MSCs) as a new therapeutic strategy for patients with RA, we compared the therapeutic effects of bone marrow derived MSCs (BMSCs), umbilical cord derived MSCs (UCs), and stem cells derived from human exfoliated deciduous teeth (SHED) on collagen-induced arthritis (CIA) in mice. Methods A total of 24 DBA/1 mice were infused with type II collagen to induce RA in the experimental model. MSC-treated mice were infused with UCs, BMSCs, and SHED, respectively. Bone erosion and joint destruction were measured by micro-computed tomographic (micro-CT) analysis and hematoxylin and eosin staining. The levels of tumor necrosis factor α (TNF-α) and interleukin-1β (IL-1β) were measured by immunohistochemistry and Enzyme-Linked Immunosorbent Assay (ELISA). Results Systemic delivery of MSCs significantly improved the severity of the symptoms related to CIA to greater extent compared with the untreated control group. Micro-CT revealed reduced bone erosions in the metatarsophalangeal joints upon treatment with MSCs. Additionally, according to histologic evaluation, reduced synovitis and articular destruction were observed in MSC-treated groups. The levels of TNF-α and IL-1β in the serum and joints decreased with treatment by MSCs. Conclusion Our findings suggest that systemic infusion of UCs, BMSCs, and SHED may significantly alleviate the effects of RA. The therapeutic effect of BMSCs was greater than that of SHED, while the UCs were shown to have the best therapeutic effect on CIA mice. In conclusion, compared with BMSCs and SHED, UCs may be a more suitable source of MSCs for the treatment of patients with RA.
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Affiliation(s)
- Qing Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical Universit, Xi'an, Shaanxi, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
| | - Qihong Li
- Department of Stomatology, the Fifth Medical Centre, Chinese PLA General Hospital, Beijing, China
| | - Jun Zhu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical Universit, Xi'an, Shaanxi, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
| | - Hao Guo
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical Universit, Xi'an, Shaanxi, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
| | - Qiming Zhai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical Universit, Xi'an, Shaanxi, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
| | - Bei Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical Universit, Xi'an, Shaanxi, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
| | - Yan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical Universit, Xi'an, Shaanxi, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
| | - Xiaoning He
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical Universit, Xi'an, Shaanxi, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
| | - Fang Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical Universit, Xi'an, Shaanxi, China.,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, Shaanxi, China
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22
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Wang X, Zhang T, Meng B, Zhai Q, Ren X, Li L, Wang P, Zhang H. A2aR AS ONE OF NOVEL IMMUNE CHECKPOINTS, AND TUMOR-INFILTRATING LYMPHOCYTES IN DIFFUSE LARGE B-CELL LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.19_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- X. Wang
- Department of Lymphoma; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - T. Zhang
- Department of Lymphoma; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - B. Meng
- Department of Pathology; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - Q. Zhai
- Department of Pathology; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - X. Ren
- Department of Immunology/Biotherapy; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - L. Li
- Department of Lymphoma; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - P. Wang
- Department of Radiation Oncology; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
| | - H. Zhang
- Department of Lymphoma; Tianjin Medical University Cancer Institute and Hospital; Tianjin China
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23
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Abstract
The teeth are highly differentiated chewing organs formed by the development of tooth germ tissue located in the jaw and consist of the enamel, dentin, cementum, pulp, and periodontal tissue. Moreover, the teeth have a complicated regulatory mechanism, special histologic origin, diverse structure, and important function in mastication, articulation, and aesthetics. These characteristics, to a certain extent, greatly complicate the research in tooth regeneration. Recently, new ideas for tooth and tissue regeneration have begun to appear with rapid developments in the theories and technologies in tissue engineering. Numerous types of stem cells have been isolated from dental tissue, such as dental pulp stem cells (DPSCs), stem cells isolated from human pulp of exfoliated deciduous teeth (SHED), periodontal ligament stem cells (PDLSCs), stem cells from apical papilla (SCAPs), and dental follicle cells (DFCs). All these cells can regenerate the tissue of tooth. This review outlines the cell types and strategies of stem cell therapy applied in tooth regeneration, in order to provide theoretical basis for clinical treatments.
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Affiliation(s)
- Qiming Zhai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Center for Tissue Engineering, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhiwei Dong
- Department of Oral and Maxillofacial Surgery, General Hospital of Shenyang Military Area Command, Shenyang, 110840, China
| | - Wei Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, China
| | - Bei Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Center for Tissue Engineering, Fourth Military Medical University, Xi'an, 710032, China. .,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, 710032, China.
| | - Yan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases, Center for Tissue Engineering, Fourth Military Medical University, Xi'an, 710032, China. .,Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, 710032, China.
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Shi Y, Zhao X, Zhao J, Zhang H, Zhai Q, Narbad A, Chen W. A mixture of Lactobacillus species isolated from traditional fermented foods promote recovery from antibiotic-induced intestinal disruption in mice. J Appl Microbiol 2018; 124:842-854. [PMID: 29314490 DOI: 10.1111/jam.13687] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [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: 08/09/2017] [Revised: 11/30/2017] [Accepted: 12/12/2017] [Indexed: 12/18/2022]
Abstract
AIMS This study evaluated the antibiotic-induced changes in microbial ecology, intestinal dysbiosis and low-grade inflammation; and the combined effect of four different Lactobacillus species on recovery of microbiota composition and improvement of gut barrier function in mice. METHODS AND RESULTS Administration of the antibiotic ampicillin for 2 weeks decreased microbial community diversity, induced caecum tumefaction and increased gut permeability in mice. Application of a probiotic cocktail of four Lactobacillus species (JUP-Y4) modulated the microbiota community structure and promoted the abundance of potentially beneficial bacteria such as Akkermansia. Ampicillin administration led to a decline in Bacteroidetes from 46·6 ± 3·91% to 0·264 ± 0·0362%; the addition of JUP-Y4 restored this to 41·4 ± 2·87%. This probiotic supplementation was more effective than natural restoration, where the levels of Bacteroidetes were only restored to 29·3 ± 2·07%. Interestingly, JUP-Y4 treatment was more effective in the restoration of microbiota in faecal samples than in caecal samples. JUP-Y4 also significantly reduced the levels of d-lactate and endotoxin (lipopolysaccharide, LPS) in the serum of mice, and increased the expression of tight-junction proteins while reducing the production of inflammatory cytokines (TNF-α, IL-6, MCP-1, IFN-γ and IL-1β) in the ileum and the colon of antibiotic-treated mice. CONCLUSIONS JUP-Y4 not only promoted recovery from antibiotic-induced gut dysbiosis, but also enhanced the function of the gut barrier, reduced inflammation and lowered levels of circulating endotoxin in mice. SIGNIFICANCE AND IMPACT OF THE STUDY Consumption of a mixture of Lactobacillus species may encourage faster recovery from antibiotic-induced gut dysbiosis and gut microbiota-related immune disturbance.
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Affiliation(s)
- Y Shi
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, Jiangsu, China
| | - X Zhao
- School of Life Science and Technology, Shanghai Tech University, Shanghai, China
| | - J Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - H Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,National Engineering Research Centre for Functional Food, Wuxi, Jiangsu, China
| | - Q Zhai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, Jiangsu, China.,National Engineering Research Centre for Functional Food, Wuxi, Jiangsu, China
| | - A Narbad
- UK-China Joint Centre on Probiotic Bacteria, Norwich, UK.,Gut Health and Food Safety Programme, Quadram Institute Bioscience, Norwich, UK
| | - W Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,National Engineering Research Centre for Functional Food, Wuxi, Jiangsu, China.,Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, China
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25
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Wang L, Zhai Q, Zhao P, Xiang X, Zhang X, Tian W, Li T. Functional analysis of p.Ala253_Leu254insAsn mutation in PLS3 responsible for X-linked osteoporosis. Clin Genet 2017. [PMID: 28646489 DOI: 10.1111/cge.13081] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Mutations in Plastin-3 (PLS3) have been identified as a cause of X-linked osteoporosis. To reveal the molecular mechanism of PLS3 on osteoporosis, we characterized the p.Ala253_Leu254insAsn mutation in PLS3. We first identified Lymphocyte cytosolic protein 1 (LCP1) as a binding partner of PLS3 and the mutation disrupted the interaction between them. We then confirmed the roles of PLS3 and LCP1 in the regulation of intracellular Ca2+ , which was weakened by the mutant PLS3. Moreover, the interaction between PLS3 and LCP1 was enhanced under a low concentration of extracellular Ca2+ . However, the mutation in PLS3 weakened the responsiveness. The reduced regulation on Ca2+ caused by p.Ala253_Leu254insAsn may be the possible molecular mechanism of osteoporosis.
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Affiliation(s)
- L Wang
- Center of Translational Medicine, Central Hospital of Zibo, Shandong University, Zibo, China
| | - Q Zhai
- Center of Translational Medicine, Central Hospital of Zibo, Shandong University, Zibo, China
| | - P Zhao
- Center of Translational Medicine, Central Hospital of Zibo, Shandong University, Zibo, China
| | - X Xiang
- Center of Translational Medicine, Central Hospital of Zibo, Shandong University, Zibo, China
| | - X Zhang
- Center of Translational Medicine, Central Hospital of Zibo, Shandong University, Zibo, China
| | - W Tian
- Center of Translational Medicine, Central Hospital of Zibo, Shandong University, Zibo, China
| | - T Li
- Center of Translational Medicine, Central Hospital of Zibo, Shandong University, Zibo, China
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Routman D, Funk R, Tangsriwong K, Lin A, Michael K, Garcia J, Stoddard D, Eric M, Day C, Zhai Q, Price K, Lukens J, Samuel S, Weinstein G, O'Malley B, Foote R, Ma D. Relapse Rates with Surgery Alone in HPV-Related Intermediate- and High-Risk-Group Oropharynx Squamous Cell Cancer: A Multi-Institutional Review. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Miller D, Ko S, Wert K, Waddle M, May B, Miller R, Peterson J, Menefee M, Young G, Casler J, Patel S, Zhai Q, Zhou L, Buskirk S, Foote R. High Risk Oral Cavity Carcinoma Patient Outcomes Following Minimally Invasive Surgery and Adjuvant Radiation. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Amyloidomas are rare tumor-like depositions of abnormally folded, insoluble proteins that may be seen in the setting of systemic amyloidosis or as isolated tumoral deposits. Focal, isolated amyloidomas carry an excellent prognosis whereas systemic amyloidoses do not. The ability to identify or suggest amyloidoma on imaging studies may help direct laboratory testing and eventual diagnosis. Amyloidomas involving the head and neck have been variably described from homogeneously T2 hypointense to iso-slightly hyperintense relative to skeletal muscle. Herein we present two patients with pharyngeal submucosal amyloidomas of differing sizes and imaging characteristics to emphasize their potential widely variable imaging appearance and broaden our knowledge of these rare lesions.
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Affiliation(s)
| | - Q Zhai
- Mayo Clinic Jacksonville, USA
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29
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Vizlin-Hodzic D, Zhai Q, Illes S, Södersten K, Truvé K, Parris TZ, Sobhan PK, Salmela S, Kosalai ST, Kanduri C, Strandberg J, Seth H, Bontell TO, Hanse E, Ågren H, Funa K. Early onset of inflammation during ontogeny of bipolar disorder: the NLRP2 inflammasome gene distinctly differentiates between patients and healthy controls in the transition between iPS cell and neural stem cell stages. Transl Psychiatry 2017; 7:e1010. [PMID: 28117838 PMCID: PMC5545741 DOI: 10.1038/tp.2016.284] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 11/27/2016] [Indexed: 01/09/2023] Open
Abstract
Neuro-inflammation and neuronal communication are considered as mis-regulated processes in the aetiology and pathology of bipolar disorder (BD). Which and when specific signal pathways become abnormal during the ontogeny of bipolar disorder patients is unknown. To address this question, we applied induced pluripotent stem cell (iPSC) technology followed by cortical neural differentiation on adipocyte-derived cells from BD type I patients (with psychotic episodes in psychiatric history) and healthy volunteers (controls). RNA sequencing in iPSC and cortical neural stem cell (NSC) lines were used to examine alterations between the transcriptomes from BD I and control samples during transition from the pluripotent stage towards the neural developmental stage. At the iPSC stage, the most highly significant differentially expressed gene (DEG) was the NLRP2 inflammasome (P=2.66 × 10-10). Also among 42 DEGs at the NSC stage, NLRP2 showed the strongest statistical significance (P=3.07 × 10-19). In addition, we have also identified several cytoskeleton-associated genes as DEGs from the NSC stage, such as TMP2, TAGLN and ACTA2; the former two genes are recognised for the first time to be associated with BD. Our results also suggest that iPSC-derived BD-cortical NSCs carry several abnormalities in dopamine and GABA receptor canonical pathways, underlining that our in vitro BD model reflects pathology in the central nervous system. This would indicate that mis-regulated gene expression of inflammatory, neurotransmitter and cytoskeletal signalling occurs during early fetal brain development of BD I patients.
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Affiliation(s)
- D Vizlin-Hodzic
- Sahlgrenska Cancer Center, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Q Zhai
- Sahlgrenska Cancer Center, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - S Illes
- Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,Oncology Laboratory, Department of Pathology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - K Södersten
- Institute of Neuroscience and Physiology, Section of Psychiatry and Neurochemistry, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - K Truvé
- Bioinformatics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - T Z Parris
- Sahlgrenska Cancer Center, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - P K Sobhan
- Sahlgrenska Cancer Center, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - S Salmela
- Sahlgrenska Cancer Center, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - S T Kosalai
- Institute of Biomedicine, Department of Medical Genetics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - C Kanduri
- Institute of Biomedicine, Department of Medical Genetics, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - J Strandberg
- Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - H Seth
- Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - T O Bontell
- Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,Department of Clinical Pathology and Cytology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - E Hanse
- Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - H Ågren
- Institute of Neuroscience and Physiology, Section of Psychiatry and Neurochemistry, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,Institute of Neuroscience and Physiology, Section of Psychiatry and Neurochemistry, Sahlgrenska Academy, University of Gothenburg, SE 405 30 Gothenburg, Sweden E-mail:
| | - K Funa
- Sahlgrenska Cancer Center, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden,Oncology Laboratory, Department of Pathology, Sahlgrenska University Hospital, Gothenburg, Sweden,Oncology Laboratory, Department of Pathology, Sahlgrenska University Hospital, SE 413 45 Gothenburg, Sweden. E-mail:
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30
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Miller D, Ko S, Zhai Q, Habboush J, Tzou K, Peterson J, Vallow L, Buskirk S, Patel S, Foote R. Prevalence and Prognostic Implication of Human Papillomavirus in Oral Cavity Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Miller D, Ko S, Zhai Q, Habboush Y, Tzou K, Peterson J, Vallow L, Miller R, Buskirk S, Patel S, Foote R. Prevalence and Prognostic Implications of Human Papillomavirus in Oral Cavity Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2015.12.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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32
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Deng L, Xu-Monette ZY, Loghavi S, Manyam GC, Xia Y, Visco C, Huh J, Zhang L, Zhai Q, Wang Y, Qiu L, Dybkær K, Chiu A, Perry AM, Zhang S, Tzankov A, Rao H, Abramson J, Sohani AR, Xu M, Hsi ED, Zhu J, Ponzoni M, Wang S, Li L, Zhang M, Ferreri AJM, Parsons BM, Li Y, Piris MA, Medeiros LJ, Young KH. Primary testicular diffuse large B-cell lymphoma displays distinct clinical and biological features for treatment failure in rituximab era: a report from the International PTL Consortium. Leukemia 2015; 30:361-72. [DOI: 10.1038/leu.2015.237] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 08/15/2015] [Accepted: 08/18/2015] [Indexed: 12/15/2022]
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33
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Jones ACL, Goldman HJ, Zhai Q, Feng P, Tom HWK, Mills AP. Monoenergetic positronium emission from metal-organic framework crystals. Phys Rev Lett 2015; 114:153201. [PMID: 25933312 DOI: 10.1103/physrevlett.114.153201] [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] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Indexed: 06/04/2023]
Abstract
Recently it has been discovered that positronium (Ps), after forming in metal-organic framework (MOF) crystals, is emitted into vacuum with a high efficiency and low energy that can only be explained by its propagating as delocalized Bloch states. We show that the Ps atoms are emitted from MOFs in a series of narrow energy peaks consistent with Ps at Bloch-state energy minima being emitted adiabatically into the vacuum. This implies that the Ps emission energy spectra can be directly compared with calculations to obtain detailed information about the Ps band structure in the MOF crystal. The narrow energy width of the lowest energy Ps peak from one MOF sample (2-Methylimidazole zinc salt ZIF-8) suggests it originates from a polaronic Ps surface state. Other peaks can be assigned to Ps with an effective mass of about twice that of bare Ps. Given the immense catalog of available MOF crystals, it should be possible to tune the Ps properties to make vastly improved sources with high production efficiency and a narrow energy spread, for use in fundamental physics experiments.
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Affiliation(s)
- A C L Jones
- Department of Physics and Astronomy, University of California, Riverside, California 92521, USA
| | - H J Goldman
- Department of Physics and Astronomy, University of California, Riverside, California 92521, USA
| | - Q Zhai
- Materials Science and Engineering Program and Department of Chemistry, University of California, Riverside, California 92521, USA
| | - P Feng
- Materials Science and Engineering Program and Department of Chemistry, University of California, Riverside, California 92521, USA
| | - H W K Tom
- Department of Physics and Astronomy, University of California, Riverside, California 92521, USA
| | - A P Mills
- Department of Physics and Astronomy, University of California, Riverside, California 92521, USA
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Chavali PL, Saini RKR, Zhai Q, Vizlin-Hodzic D, Venkatabalasubramanian S, Hayashi A, Johansson E, Zeng ZJ, Mohlin S, Påhlman S, Hansford L, Kaplan DR, Funa K. TLX activates MMP-2, promotes self-renewal of tumor spheres in neuroblastoma and correlates with poor patient survival. Cell Death Dis 2014; 5:e1502. [PMID: 25356871 PMCID: PMC4237266 DOI: 10.1038/cddis.2014.449] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [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: 04/06/2014] [Revised: 08/07/2014] [Accepted: 08/14/2014] [Indexed: 12/23/2022]
Abstract
Nuclear orphan receptor TLX (Drosophilatailless homolog) is essential for the maintenance of neural stem/progenitor cell self-renewal, but its role in neuroblastoma (NB) is not well understood. Here, we show that TLX is essential for the formation of tumor spheres in three different NB cell lines, when grown in neural stem cell media. We demonstrate that the knock down of TLX in IMR-32 cells diminishes its tumor sphere-forming capacity. In tumor spheres, TLX is coexpressed with the neural progenitor markers Nestin, CD133 and Oct-4. In addition, TLX is coexpressed with the migratory neural progenitor markers CD15 and matrix metalloproteinase-2 (MMP-2) in xenografts of primary NB cells from patients. Subsequently, we show the effect of TLX on the proliferative, invasive and migratory properties of IMR-32 cells. We attribute this to the recruitment of TLX to both MMP-2 and Oct-4 gene promoters, which resulted in the respective gene activation. In support of our findings, we found that TLX expression was high in NB patient tissues when compared with normal peripheral nervous system tissues. Further, the Kaplan–Meier estimator indicated a negative correlation between TLX expression and survival in 88 NB patients. Therefore, our results point at TLX being a crucial player in progression of NB, by promoting self-renewal of NB tumor-initiating cells and altering their migratory and invasive properties.
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Affiliation(s)
- P L Chavali
- 1] Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden [2] Department of Oncology, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, UK
| | - R K R Saini
- Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden
| | - Q Zhai
- Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden
| | - D Vizlin-Hodzic
- Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden
| | - S Venkatabalasubramanian
- 1] Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden [2] School of Chemical and Biotechnology, SASTRA University, Thanjavur 613401, India
| | - A Hayashi
- Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden
| | - E Johansson
- Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden
| | - Z-j Zeng
- 1] Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden [2] Molecular Biology Research Center, School of Biological Science and Technology, Central South University, Changsha, China
| | - S Mohlin
- Center for Molecular Pathology, Lund University, Skåne University Hospital, Malmö SE 20502, Sweden
| | - S Påhlman
- Center for Molecular Pathology, Lund University, Skåne University Hospital, Malmö SE 20502, Sweden
| | - L Hansford
- 1] Program in Cell Biology, Hospital for Sick Children, Toronto, Canada M5G 1X8 [2] Department of Molecular Genetics, University of Toronto, Toronto, Canada M5S 1A8
| | - D R Kaplan
- 1] Program in Cell Biology, Hospital for Sick Children, Toronto, Canada M5G 1X8 [2] Department of Molecular Genetics, University of Toronto, Toronto, Canada M5S 1A8
| | - K Funa
- Sahlgrenska Cancer Center at the Sahlgrenska Academy, University of Gothenburg, Box 425, Gothenburg SE 40530, Sweden
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Xu C, Wallace MB, Yang J, Jiang L, Zhai Q, Zhang Y, Hong C, Chen Y, Frank TS, Stauffer JA, Asbun HJ, Raimondo M, Woodward TA, Li Z, Guha S, Zheng L, Li M. ZIP4 is a novel diagnostic and prognostic marker in human pancreatic cancer: a systemic comparison between EUS-FNA and surgical specimens. Curr Mol Med 2014; 14:309-15. [PMID: 24345208 PMCID: PMC6870177 DOI: 10.2174/1566524013666131217112921] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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: 11/30/2013] [Revised: 12/11/2013] [Accepted: 12/12/2013] [Indexed: 12/31/2022]
Abstract
Aberrant expression of a zinc transporter ZIP4 in pancreatic ductal adenocarcinoma (PDAC) has been shown to contribute to tumor progression and is a potential target for individualized therapy. The overall objective of this study was to determine whether ZIP4 could serve as a novel diagnostic and prognostic marker in human PDAC, and if it can be assessed by minimally invasive sampling using endoscopic ultrasound guided fine needle aspiration (EUS-FNA). Immunohistochemistry was performed to compare ZIP4 expression in the PDAC samples obtained from EUS-FNA and matched surgical tumors (parallel control). Samples were reported by sensitivity, specificity, and predictive values, all with 95% confidence intervals (CI). A total of 23 cases with both FNA and surgical specimens were evaluated. We found that ZIP4 was significantly overexpressed in tumor cells from both sets of samples. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of ZIP4 for the diagnosis of PDAC were 72.9%, 72.5%, 76.1%, and 69.0% in EUS-FNA samples, and were 97.9%, 65.4%, 83.9%, and 94.4% in surgical specimens, respectively. The association between the positive rate of ZIP4 expression in FNA and surgical samples is statistically significant (P=0.0216). Both the intensity and percentage of ZIP4 positive cells from the surgical samples correlated significantly with tumor stage (P=0.0025 and P=0.0002). ZIP4 intensity level in FNA samples was significantly associated with tumor differentiation and patient survival. These results indicate that EUS-FNA is capable of non-operative detection of ZIP4, thus offering the potential to direct pre-operative detection and targeted therapy of PDAC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - M Li
- Vivian L. Smith Department of Neurosurgery, the University of Texas Medical School at Houston, 6431 Fannin Street, MSE R131, Houston, TX 77030, USA.
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36
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Hong Y, Chen Z, Zhang B, Zhai Q. Isolation of Photobacterium sp. LuB-1 and its application in rapid assays for chemical toxicants in water. Lett Appl Microbiol 2010; 51:308-12. [PMID: 20666988 DOI: 10.1111/j.1472-765x.2010.02896.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS To isolate marine bacteria with strong bioluminescence in a wide range of NaCl concentration, especially at low salt conditions. METHODS AND RESULTS A luminous bacterium named LuB-1 was isolated from China. It was identified by biochemical analysis and phylogenetic analysis based on the 16S rRNA gene and designated as Photobacterium sp. The isolate is capable of emitting strong and stable luminescence in a wide range of NaCl concentration from 0.2 to 5% (w/v). For most toxic agents tested in this study, the response of LuB-1 was better than that of MicrotoxVibrio fischeri under both low salt (0.9% NaCl) and high salt (2.0% NaCl) conditions. CONCLUSION The strain LuB-1 had an obvious predominance of bioluminescence in a wide range of NaCl concentration and better response for heavy metal pollutants and some organic toxicants in both low and high salt toxicity test systems. SIGNIFICANCE AND IMPACT OF THE STUDY Because of its good sensitivity in a wide range of salt concentration, the strain LuB-1 should have its unique advantage in rapid assay for toxicants in water with different salt concentrations.
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Affiliation(s)
- Y Hong
- Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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37
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Abstract
We investigate the quantum dynamics of number fluctuations inside an atomic condensate during coherent spin mixing among internal states of the ground state hyperfine manifold, by quantizing the semiclassical nonrigid pendulum model in terms of the conjugate variable pair: the relative phase and the atom number. Our result provides a theoretical basis that resolves the resolution limit, or the effective "shot-noise" level, for counting atoms that is needed to clearly detect quantum correlation effects in spin mixing.
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Affiliation(s)
- Lee Chang
- Center for Advanced Study, Tsinghua University, Beijing, PR China
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Amato RJ, Harris P, Dalton M, Khan M, Alter R, Zhai Q, Brady JR, Jac J, Hauke R, Srinivas S. A phase II trial of intra-patient dose-escalated sorafenib in patients (pts) with metastatic renal cell cancer (MRCC). J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.5026] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5026 Background: Sorafenib has demonstrated activity with limited toxicity at a dose of 400 mg bid in MRCC pts. This presents an opportunity to explore a more intensive drug administration. This study allowed individual pt titration designed to evaluate the ability for pts to dose escalate. Response rate (RR), time to progression (TTP) and overall survival (OS) will be assessed. Methods: Eligibility included; pathologic diagnosis of a component of clear cell, progressive measurable MRCC, no more than 1 prior therapy, karnofsky performance status (KPS) = 70%, adequate organ/marrow function and no active CNS involvement. Initial dose 400 mg bid, daily. Dose escalation defined in the table below: Re-evaluation is performed every 8 weeks. RECIST criteria is utilized. Results: 46 patients have been enrolled. 44 are evaluable. 37 male/7 female, median age 50 years (43–79). 19 pts received prior therapy. 39 pts had a KPS of 100%, 5/90%. Sites of disease included; lung, nodal, liver, bone, adrenal, pancreas and kidney. 26 pts 1 metastatic site, 12 /2, 6/3 or more. 22 pts continue to receive sorafenib therapy; 2/800 mg, 7/1,200 mg, and 13/1,600 mg. 8 pts complete response (CR), 14 pts/partial response (PR) and 14 pts stable for 3+ months. Median duration of therapy is 6+ (range 0.2+ - 12+) months. 2 pts have not been reevaluated. Treatment related adverse events to-date; hand/foot syndrome, skin rash, diarrhea, alopecia, fatigue, hypertension, hypophosphatemia, and elevated amylase/lipase. Conclusion: 91% of pts were escalated to 1,200 mg or 1,600 mg per day. Dose escalated sorafenib has promising anti-tumor activity in pts with MRCC as demonstrated by a 52% CR/PR rate. Anti-tumor activity is further suggested by prolonged TTP = 3 months for 33% of pts. Independent radiology review is in progress. Intra-patient dose escalation data in association with anti-tumor activity and toxicity will be presented. [Table: see text] [Table: see text]
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Affiliation(s)
- R. J. Amato
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - P. Harris
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - M. Dalton
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - M. Khan
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - R. Alter
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - Q. Zhai
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - J. R. Brady
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - J. Jac
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - R. Hauke
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
| | - S. Srinivas
- The Methodist Hospital Research Institute, Houston, TX; University of Nebraska Medical Center, Omaha, NE; Stanford University, Stanford, CA
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Liu C, Chen X, Zhai Q, Jiang PF, Wen GM, Tang ZH. Late congenital syphilis presenting as deletion of uvula and cardiovascular disease. J Eur Acad Dermatol Venereol 2006; 20:1385-6. [PMID: 17062094 DOI: 10.1111/j.1468-3083.2006.01739.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Jac J, Zhai Q, Kareidy M, Hernandez J, Marsh L, Amato RJ. Interferon-alpha (INF) and gefitinib or imatinib in patients (pts) with metastatic renal cell carcinoma (RCC). J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.14616] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
14616 Background: Overexpression of EGFR is associated with aggressive clinical behavior in several solid tumors and is frequent in RCC. We recently found that the majority of RCCs express c-kit and PDGFR-beta. EGFR tyrosine kinase (TK) is inhibited by GEF, while IM is an inhibitor of Bcr-Abl, c-kit and PDGFR TKs. IFN has activity in MRCC and is used in front-line therapy. This trial evaluates time to progression (TTP) determined from time of study entry and response rate of INF in combination with GEF or IM, as well as tumor expression of c-kit and EGFR-beta. Methods: Pts with MRCC were assigned to a treatment arm: IFN/GEF or IFN/IM. Eligibility included: MRCC, any previous therapy, PS ≤2, adequate organ/marrow function and no active CNS involvement. Pts received IFN 3MU subcutaneously TIW on week 1, then 6MU TIW thereafter. GEF dose is 500 mg and IM 600 mg daily. Tumor response is assessed using RECIST every 12 weeks. Results: 16 MRCC pts (12 M/4 F) with a median age of 58 (24–77) have been enrolled. Histology: 6 papillary, 7 clear cell, 1 chromophobe, 1 collecting duct and 1 unclassified. 14 pts received IFN/GEF and 4 pts IFN/IM. Two pts crossed over from IFN/IM to IFN/GEF. Of 14 pts on IFN/GEF, 3 demonstrated a partial response (PR) and 7 had stable disease at 12 weeks. Of 6 papillary, 3 had PR. 8 pts progressed on IFN/GEF at a median of 20 weeks (1–36). 4 pts are still on treatment. On IFN/IM, 3 pts had stable disease at 12 weeks, 2 at 24. 2 pts progressed at 4 and 14 weeks, two crossed over to GEF at 24 weeks. Adverse events of IFN/GEF included skin rash and diarrhea and of IFN/IM skin rash, thrombocytopenia and leukopenia. Both arms had flu-like symptoms and fatigue. Conclusions: IFN/GEF and IFN/IM combinations are well tolerated. Preliminary results show the potential of delaying TTP in pts with MRCC. The observed high tumor response rate of the papillary type to IFN/GEF requires validation in a larger number of pts. Enrollment is ongoing. Updated response data and tissue correlates will be presented. [Table: see text]
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Affiliation(s)
- J. Jac
- Methodist Hospital Research Institute, Houston, TX
| | - Q. Zhai
- Methodist Hospital Research Institute, Houston, TX
| | - M. Kareidy
- Methodist Hospital Research Institute, Houston, TX
| | - J. Hernandez
- Methodist Hospital Research Institute, Houston, TX
| | - L. Marsh
- Methodist Hospital Research Institute, Houston, TX
| | - R. J. Amato
- Methodist Hospital Research Institute, Houston, TX
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Chen N, Szentirmay MN, Pawar SA, Sirito M, Wang J, Wang Z, Zhai Q, Yang HX, Peehl DM, Ware JL, Sawadogo M. Tumor-suppression function of transcription factor USF2 in prostate carcinogenesis. Oncogene 2005; 25:579-87. [PMID: 16186802 DOI: 10.1038/sj.onc.1209079] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Although the transcription factor USF2 has been implicated in the regulation of cellular growth and proliferation, it is unknown whether alterations in USF2 contribute to tumorigenesis and tumor development. We examined the role of USF2 in prostate tumorigenesis. Western blot analysis revealed markedly decreased USF2 levels in three androgen-independent prostate cancer cell lines, PC-3, DU145, and M12, as compared to nontumorigenic prostate epithelial cells or the androgen-dependent cell line, LNCaP. Ectopic expression of USF2 in PC-3 cells did not affect the cell proliferation rate of PC-3 cells on plastic surfaces. However, it dramatically decreased anchorage-independent growth of PC-3 cells in soft agar (90-98% inhibition) and the invasion capability (80% inhibition) of PC-3 cells in matrix gel assay. Importantly, expression of USF2 in PC-3 cells inhibited the tumorigenicity of PC-3 cells in an in vivo nude mice xenograft model (80-90% inhibition). These results suggest that USF2 has tumor-suppression function. Consistent with its function in tumor suppression, we found that the USF2 protein is present in normal prostate epithelial cells but absent in 18 of 42 (43%) human prostate cancer tissues (P = 0.015). To further examine the functional role of USF2 in vivo, we generated mice with genetic deletion of USF2 gene. We found that USF2-null mice displayed marked prostate hyperplasia at a young age, suggesting that USF2 is involved in the normal growth and differentiation of prostate. Together, these studies demonstrate that USF2 has tumor-suppressor function and plays a role in prostate carcinogenesis.
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Affiliation(s)
- N Chen
- Department of Molecular Genetics, The University of Texas, MD Anderson Cancer Center, Houston, 77030, USA.
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Traub RJ, Zhai Q, Ji Y, Kovalenko M. NMDA receptor antagonists attenuate noxious and nonnoxious colorectal distention-induced Fos expression in the spinal cord and the visceromotor reflex. Neuroscience 2002; 113:205-11. [PMID: 12123698 DOI: 10.1016/s0306-4522(02)00170-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
In the present three-part study, the effects of intrathecally administered N-methyl-D-aspartate (NMDA) receptor antagonists on responses to noxious and innocuous colorectal distention (CRD) were examined. In the first part, a passive-avoidance paradigm was used to confirm that 80 mm Hg CRD is a noxious stimulus since it produced avoidance behavior. Acquisition of this behavior was blocked by the NMDA receptor antagonist D(-)-2-amino-5-phosphonopetanoic acid (APV, 60 nmol, intrathecal). In contrast, 20 mm Hg CRD is an innocuous stimulus since there was no difference in the behavior of these animals compared to nondistended controls. In the second part, the effects of the NMDA receptor antagonist dizocilpine maleate (MK-801, 0-100 nmol, intrathecal) on CRD-induced Fos expression in the lumbosacral spinal cord were examined. Noxious and innocuous CRD induced 98+/-4 and 50+/-2 Fos labeled cells per section per side of the spinal cord, respectively. MK-801 dose-dependently attenuated noxious CRD-induced Fos. Compared to saline, the peak attenuation was 55%. Innocuous CRD-induced Fos was attenuated by 36% following 100 nmol MK-801. In the third part, the effects of APV (0-240 nmol, intrathecal) on the visceromotor reflex were examined. APV dose-dependently attenuated the visceromotor reflex to graded intensities of CRD that went from the innocuous into the noxious range. In separate animals that only received innocuous stimulation, APV dose-dependently attenuated the visceromotor reflex. The magnitude of attenuation was similar for both stimulus paradigms. These data expand upon our previous dorsal horn neuronal recordings which showed that spinal NMDA receptors partially mediate the processing of both noxious and innocuous colorectal stimuli. They further underscore a difference from somatic tissue in the role of NMDA receptors in processing acute or transient visceral stimuli in the absence of tissue injury.
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Affiliation(s)
- R J Traub
- Department of Oral and Craniofacial Biological Sciences, Dental School, University of Maryland, 666 W. Baltimore Street, Baltimore, MD 21201, USA.
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Zhuang H, Li K, Zhu W, Tang R, Li S, Zhai Q, Jiang J, Liu J, Yao Z. [Etiological study on patients with seronegative viral hepatitis]. Zhonghua Nei Ke Za Zhi 2000; 39:801-4. [PMID: 11798538] [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 investigate the etiology of hepatitis patients who were seronegative for viral hepatitis A through E. METHODS By using PCR, HBV DNA, HCV RNA, HEV RNA and HGV RNA were detected in sera of 104 patients with seronegative viral hepatitis. The partial nucleotide sequences of 2 HCV and 17 HEV isolates were analysed by direct sequencing. RESULTS Among the 104 patients with seronegative viral hepatitis, the positive rates of HBV DNA, HCV RNA, HEV RNA and HGV RNA were 29.8%, 3.8%, 22.1% and 7.7%, respectively, with only 38 cases (36.6%) negative for the genome of all known hepatitis viruses. CONCLUSION In addition to serological tests, the polymerase chain reaction of all known hepatitis viruses should be used to make the diagnosis of non-A - E hepatitis.
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Affiliation(s)
- H Zhuang
- Department of Microbiology, Beijing Medical University, Beijing 100083, China
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Abstract
Copper, an essential trace element, can be toxic to some cells when present in excess. But thorough investigations into the cytotoxicity of copper and subsequent molecular mechanisms are rare, although the cytotoxicity of copper has been applied to cancer chemotherapy. The present study demonstrates that Cu(2+) inhibits [(3)H] thymidine incorporation in mouse pro-B cell line BA/F3beta and induces apoptosis. Apoptosis was mainly judged by morphology of cells, quantification of subdiploid DNA contents by flow cytometry, and detection of DNA fragmentation by gel electrophoresis. The apoptotic effect is dose and time dependent. Western blotting shows Bax is upregulated by Cu(2+). Bcl-2 overexpression can partially inhibit this apoptosis. Moreover, Cu(2+) increases the production of reactive oxygen species (ROS) in a dose-dependent manner. The antioxidant N-acetylcysteine (NAC) not only significantly inhibited copper-induced apoptosis but also totally blocked generation of ROS, while Bcl-2 overexpression has no effect on the generation of ROS. Furthermore, our results show that NFkappaB is downregulated by Cu(2+). Bcl-2 overexpression or NAC can sustain the activity of NFkappaB. These data indicate that Cu(2+) might induce apoptosis in BA/F3beta cells via upregulation of Bax and ROS and subsequent inactivation of NFkappaB.
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Affiliation(s)
- Q Zhai
- Shanghai Institute of Biochemistry, Chinese Academy of Sciences, Shanghai, China
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Ji H, Zhai Q, Zhu J, Yan M, Sun L, Liu X, Zheng Z. A novel protein MAJN binds to Jak3 and inhibits apoptosis induced by IL-2 deprival. Biochem Biophys Res Commun 2000; 270:267-71. [PMID: 10733938 DOI: 10.1006/bbrc.2000.2413] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/22/2022]
Abstract
To find a possible signal interacting with the Jak3 N-terminal, we screened the human peripheral blood cDNA library through both a two-hybrid system and a tyrosine-phosphorylation-modified two-hybrid system using the N-terminal of Jak3 as bait. Results showed that one new homologue of myosin heavy chain, designated MAJN (molecule associated with Jak3 N-terminal), could bind to Jak3 in a tyrosine-phosphorylation-independent manner. The interaction between Jak3 and MAJN was further confirmed by immunoprecipitation in BAF-B03 beta cells. To investigate the function of MAJN, we have constructed the BAF-B03 beta/MAJN cell line that stably expresses MAJN and found that overexpression of MAJN can partially inhibit the apoptosis induced by interleukin-2 deprival. Further studies are needed to elucidate how MAJN executes its function to antagonize BAF-B03beta cell death in the absence of IL-2.
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Affiliation(s)
- H Ji
- Shanghai Institute of Biochemistry, Chinese Academy of Sciences (CAS), Shanghai, China
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Li K, Zhuang H, Zhu W, Ruan B, Jiang J, Li S, Zhai Q, Yao Z, Tang R, Chen Y. [A preliminary study on hepatitis E virus antibody IgG and IgM for the diagnosis of acute hepatitis E]. Zhonghua Nei Ke Za Zhi 1999; 38:733-6. [PMID: 11798711] [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 evaluate the significance of hepatitis E virus antibody (anti-HEV) IgG and IgM for the diagnosis of acute hepatitis E. METHODS Acute phase sera from a total of 143 patients with sporadic hepatitis E in 7 cities of China were determined for anti-HEV IgM and IgG by using an enzyme-linked immunosorbent assay (EIA). 359 serial sera of 56 patients with hepatitis E and 68 serial sera of 4 rhesus macaques experimentally infected with hepatitis E virus (HEV) were also detected for anti-HEV IgG and IgM. RESULTS In the 143 patients the positive rate of anti-HEV IgG was 100.0%, which was significantly higher than that of anti-HEV IgM (73.4%, 105/143). 97.2% of anti-HEV IgG positive patients had a titer over 1:40. The positive rate of anti-HEV IgM increased with the titer of anti-HEV IgG in sera. It was 0% (0/4), 44.4% (8/18) and 80.2% (97/121), respectively in patients with the anti-HEV IgG titer of 1:20, 1:40 and >or=1:80 (P < 0.001). All the anti-HEV IgM positive patients were also anti-HEV IgG positive. No patients were found to be anti-HEV IgM positive alone. Anti-HEV IgG was detected as early as 2 days after onset of the disease, with a cumulative positive seroconversion rate of 100% by 1 month. The negative seroconversion rate of anti-HEV IgG increased with course of the disease and 43.3% of the patients lost their anti-HEV IgG by 6 months after illness. Though anti-HEV IgM also seroconverted at the same time as anti-HEV IgG, its cumulative positive seroconversion rate was only 71.4% and declined rapidly. Up to 37.5% of anti-HEV IgM positive patients became negative by 1 month after onset. Similar antibody responses were observed in 4 rhesus macaques experimentally infected with HEV. CONCLUSION It is suggested that as a result of the poor sensitivity of currently available anti-HEV IgM EIA kits, anti-HEV IgG will be a more reliable marker for the diagnosis of acute hepatitis E as compared with anti-HEV IgM.
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Affiliation(s)
- K Li
- Department of Microbiology, Beijing Medical University, Beijing 100083
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Lai Z, Zhai Q, Liu Z, Roos P, Nyberg F. Morphine-induced prolactin release precedes a down-regulation of prolactin receptors in the male rat choroid plexus and hypothalamus. Neurosci Res 1995; 23:313-6. [PMID: 8545080 DOI: 10.1016/0168-0102(95)00953-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 01/31/2023]
Abstract
In previous studies we provided evidence for changes in prolactin (PRL) receptor levels in the male rat brain after continuously infusing morphine using subcutaneously implanted miniosmotic pumps. In this work we have studied the binding of PRL in the male rat brain following morphine administration by both subcutaneous (s.c.) and intracerebroventricular (i.c.v.) injections. The binding in the choroid plexus and the hypothalamus was measured using iodinated ovine PRL (oPRL) as a radiolabel. The results indicated that the density of the PRL-binding sites in the hypothalamus and the choroid plexus were significantly decreased 4 h and 24 h after s.c. injections, and also 30 min and 4 h after i.c.v. injections. However, no decrease in PRL-binding was observed 15 min after i.c.v. injection of morphine. The plasma levels of PRL were measured by radioimmunoassay (RIA) and were found to be significantly increased after 30 min and 4 h in all treated animals. Following i.c.v. injection a significant increase in plasma PRL was observed after just 15 min. It was suggested that the down-regulation in PRL binding to some extent at least resulted from receptor overstimulation caused by the morphine-induced elevation in the concentrations of the endogenous hormone.
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Affiliation(s)
- Z Lai
- Department of Pharmaceutical Biosciences, University of Uppsala, Sweden
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Abstract
The binding of 125I-labelled rat growth hormone (GH) to different areas in the brain was studied in male Sprague-Dawley rats. A high density of GH binding was found in the choroid plexus, hypothalamus, hippocampus, pituitary and spinal cord, whereas a lower binding density was observed in the cortex. Binding of the hormone to the various brain regions was age dependent. Binding was also dependent on time, pH and protein concentration. The binding affinity of the labelled hormone to choroid plexus was 4.3 per nmol/l and the binding capacity was 33.4 nmol/mg protein. The corresponding figures for binding of 125I-labelled GH to hypothalamus were 5.6 per nmol/l and 21.6 nmol/mg protein. By sodium dodecyl sulphate electrophoresis of the cross-linked hormone-receptor complexes, molecular weights of 60,000 and 61,000 were determined for the binding units in the choroid plexus and hypothalamus, respectively. It was further indicated that the binding unit for rat GH was distinct from that for prolactin.
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Affiliation(s)
- Q Zhai
- Department of Pharmaceutical Biosciences, University of Uppsala, Sweden
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49
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Zhai Q, Zhang LF, Liang RM, Zhang YH, Sun SY, Cao XY. Immunohistochemical study of hepatitis E virus antigen in liver tissues from patients with hepatitis E. Chin Med J (Engl) 1994; 107:222-4. [PMID: 8088185] [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: 01/28/2023] Open
Abstract
Hepatitis E virus antigen (HEVAg) has been identified in liver tissue of 6 out of 14 patients with hepatitis E using anti-HEV-IgG-horseradish peroxidase (HRP) and direct immunoperoxidase staining methods. HEVAg was found only in the cytoplasm of hepatocytes, but nor in the nuclei. The HEVAg positive hepatocytes were scattered singly, but in a few parts, where the liver damage was severe, the HEVAg positive cells were quite concentrated. We also observed the invasion of lymphocytes into the HEVAg positive hepatocytes. These phenomena suggest that the liver damage may be related to the immune reaction. No HEVAg was found in the liver tissues of stillborn fetus and neonate from woman patients with hepatitis E.
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Affiliation(s)
- Q Zhai
- Department of Infectious Diseases, First Affiliated Hospital, Xinjiang Medical College, Wurumuqi
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50
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Abstract
The effect of chronically given morphine on the binding of ovine prolactin (oPRL) to specific areas in the male rat brain was studied. The drug was delivered through subcutaneously implanted miniosmotic pumps. The results indicated that the density of prolactin binding sites in the hypothalamus and the choroid plexus was significantly decreased in the acute phase of morphine administration but restored to control levels when tolerance to morphine was developed. The decrease in prolactin binding was contrasted by elevated plasma levels of the hormone. A negative correlation was found between the hormone concentration in plasma and the density of its binding sites in the hypothalamus and choroid plexus. The hormone-binding sites in these two regions were further characterized with regard to binding constants and molecular sizes. The relevance of the present results with respect to the hypothalamic control of prolactin secretion is discussed.
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Affiliation(s)
- Z Lai
- Department of Pharmacology, University of Uppsala, Sweden
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