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Lin CP, Wu SH, Lin TY, Chu CH, Lo LW, Kuo CC, Chang JY, Hsu SC, Ko BS, Yao M, Hsiao JK, Wang SW, Huang DM. Lysosomal-targeted doxorubicin delivery using RBC-derived vesicles to overcome drug-resistant cancer through mitochondrial-dependent cell death. Pharmacol Res 2023; 197:106945. [PMID: 37797662 DOI: 10.1016/j.phrs.2023.106945] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/30/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
Multidrug resistance (MDR) is a major challenge in cancer chemotherapy. Nanoparticles as drug delivery systems (DDSs) show promise for MDR cancer therapy. However, current DDSs require sophisticated design and construction based on xenogeneic nanomaterials, evoking feasibility and biocompatibility concerns. Herein, a simple but versatile biological DDS (bDDS) composed of human red blood cell (RBC)-derived vesicles (RDVs) with excellent biocompatibility was surface-linked with doxorubicin (Dox) using glutaraldehyde (glu) to form Dox-gluRDVs that remarkably suppressed MDR in uterine sarcoma through a lysosomal-mitochondrial axis-dependent cell death mechanism. Dox-gluRDVs can efficiently deliver and accumulate Dox in lysosomes, bypassing drug efflux transporters and facilitating cellular uptake and retention of Dox in drug-resistant MES-SA/Dx5 cells. The transfer of lysosomal calcium to the mitochondria during mitochondria-lysosome contact due to lysosomal Dox accumulation may result in mitochondrial ROS overproduction, mitochondrial membrane potential loss, and activation of apoptotic signaling for the superior anti-MDR activity of Dox-gluRDVs in vitro and in vivo. This work highlights the great promise of RDVs to serve as a bDDS of Dox to overcome MDR cancers but also opens up a reliable strategy for lysosomal-mitochondrial axis-dependent cell death for fighting against other inoperable cancers.
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Affiliation(s)
- Chih-Peng Lin
- Department of Anesthesiology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan
| | - Shu-Hui Wu
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 30503, Taiwan
| | - Tzu-Yin Lin
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 30503, Taiwan
| | - Chia-Hui Chu
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 30503, Taiwan
| | - Leu-Wei Lo
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 30503, Taiwan
| | - Ching-Chuan Kuo
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli 35053, Taiwan; Graduate Institute of Biomedical Sciences, China Medical University, Taichung 404333, Taiwan
| | - Jang-Yang Chang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli 35053, Taiwan; Taipei Cancer Center, Taipei Medical University Hospital, Taipei 110, Taiwan; TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Szu-Chun Hsu
- Department of Laboratory Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan
| | - Bor-Sheng Ko
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan; Department of Hematological Oncology, National Taiwan University Cancer Center, Taipei 106037, Taiwan
| | - Ming Yao
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan
| | - Jong-Kai Hsiao
- Department of Medical Imaging, Taipei Tzu Chi General Hospital, Buddhist Tzu-Chi Medical Foundation, New Taipei City 23142, Taiwan; School of Medicine, Tzu Chi University, Hualien 97004, Taiwan
| | - Shih-Wei Wang
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City 252005, Taiwan; Department of Medicine, Mackay Medical College, New Taipei City 252005, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung 807378, Taiwan
| | - Dong-Ming Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 30503, Taiwan.
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Ke TY, Wang SW, Chen SR, Huang DM, Lin YS, Hwang TL, Sun WC, Cheng YB. Alkaloids and Polyacetylenes from Hippobroma longiflora with Antiangiogenesis Properties. J Nat Prod 2023; 86:719-729. [PMID: 37023532 DOI: 10.1021/acs.jnatprod.2c00853] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Four new alkaloids, hippobrines A-D (1-4), along with three new polyacetylenes, hippobrenes A-C (5-7), were isolated from Hippobroma longiflora. Compounds 1-3 possess an unprecedented carbon skeleton. All of the new structures were determined by analyzing their mass and NMR spectroscopic data. The absolute configurations of 1 and 2 were confirmed by single-crystal X-ray analyses, and the absolute configurations of 3 and 7 were deduced using their ECD spectra. Plausible biogenetic pathways of 1 and 4 were proposed. In regard to bioactivities, all compounds (1-7) exhibited weak antiangiogenic activity against human endothelial progenitor cells, with IC50 values ranging from 21.1 ± 1.1 to 44.0 ± 2.3 μg/mL.
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Affiliation(s)
- Tzu-Yi Ke
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Shih-Wei Wang
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 25245, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City 25245, Taiwan
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Shu-Rong Chen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Dong-Ming Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Yun-Sheng Lin
- Department of Biological Science and Technology, Meiho University, Pingtung 91202, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
| | - Wen-Chun Sun
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 25245, Taiwan
- Division of Colon and Rectal Surgery, Department of Surgery, MacKay Memorial Hospital, Taipei 104217, Taiwan
| | - Yuan-Bin Cheng
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
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Li LJ, Zeng Y, Huang DM, Zhang JM, Zhang H, Ruan XH, Zhao JZ, Gao M, Zheng XQ. [Correlation between dyslipidemia and the risk of papillary thyroid carcinoma]. Zhonghua Yi Xue Za Zhi 2022; 102:3862-3867. [PMID: 36540924 DOI: 10.3760/cma.j.cn112137-20220611-01299] [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: 06/17/2023]
Abstract
Objective: To investigate the correlation between dyslipidemia and the risk of papillary thyroid carcinoma (PTC). Methods: A case-control study was conducted. PTC patients diagnosed by pathology in Tianjin Medical University Cancer Institute and Hospital from April 2014 to August 2019 were enrolled as the experimental group, and healthy controls in the physical examination center at the same time were also enrolled as the control group. The demographic data and blood lipid parameters of the subjects were collected. Multivariate logistic analyses were used to assess the correlation between dyslipidemia and the risk of PTC. Results: A total of 2 000 cases of PTC were enrolled, with a mean age of (42±12) years, including 1 419 females (71.0%) and 581 males (29.0%). There were 4 524 cases in the control group, with a mean age of (42±9) years, including 3 311 females (73.2%) and 1 213 males (26.8%). There was no statistically difference in age and gender between the two groups (both P>0.05). Compared with the control group, triglyceride (TG) [(1.7±1.1) vs (1.4±1.0) mmol/L, P<0.001] and low-density lipoprotein (LDL) [(2.9±0.8) vs (2.8±0.7) mmol/L, P=0.015] increased in peripheral blood of PTC patients, while high-density lipoprotein (HDL) [(1.3±0.4) vs (1.4±0.3) mmol/L, P<0.001] decreased, but the difference was not statistically significant in total cholesterol (TC) [(4.9±1.0) vs (4.9±0.8) mmol/L, P=0.172]. After adjusting for age and gender, increase of TC (OR=1.20, 95%CI: 1.06-1.34, P=0.003), TG (OR=1.73, 95%CI: 1.55-1.94, P<0.001), LDL (OR=1.21, 95%CI: 1.08-1.36, P=0.001), LDL/HDL (OR=1.77, 95%CI: 1.56-2.02, P<0.001) and decrease of HDL (OR=3.15, 95%CI: 2.78-3.58, P<0.001) were the related factors of PTC. Conclusions: Compared with the control group, patients with PTC have higher level of TG and LDL and lower level of HDL. Dyslipidemia is an important factor related to the risk of PTC.
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Affiliation(s)
- L J Li
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Y Zeng
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - D M Huang
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - J M Zhang
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - H Zhang
- Department of Cancer Prevention Center, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - X H Ruan
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - J Z Zhao
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - M Gao
- Department of Thyroid and Breast Surgery, Tianjin Union Medical Center, Tianjin Key Laboratory of General Surgery in Construction, Tianjin 300121, China
| | - X Q Zheng
- Department of Thyroid and Neck Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
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Huang DM, Zhi JT, Zhang JM, Zheng XQ, Zhao JZ, Wei SF, Gao M. [Correlations of serum TgAb and TPOAb and clinicopathological features of PTC in children and adolescents]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:1418-1425. [PMID: 36707945 DOI: 10.3760/cma.j.cn115330-20220927-00581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Objective: To analyze the correlations between serum thyroglobulin antibody (TgAb) and thyroid peroxidase antibody (TPOAb) and clinicopathological features in children and adolescents with papillary thyroid carcinoma (PTC). Methods: A retrospective analysis was conduced on the clinicopathological data of children and adolescents (age≤21 years old) with PTC admitted to Tianjin Medical University Cancer Hospital from 2011 to 2019, and then, we used χ2 test or Fisher's exact probability test to compare the differences in clinicopathological characteristics between groups with different TgAb and TPOAb status and multivariate logistic regression model analysis to evaluate independent predictors of cervical lymph node metastasis. Results: A total of 304 patients, including 89 males and 215 females, aged 5-21 years (median age 19 years), were enrolled in this study. The comparison between groups with different TgAb and TPOAb status showed that there were significant differences in gender, preoperative thyroglobulin (Tg) level, primary tumor location, number of primary tumors and maximum tumor diameter (all P<0.05), which suggested that TgAb+group (n=81) and TPOAb+group (n=84) had relatively better primary tumor characteristics. Patitents with TgAb+and TPOAb+were more common in females and their preoperative Tg level was mostly within the normal range, and there were significant differences in primary tumor location, number of primary tumors and maximum tumor diameter between TgAb+and TgAb-(223 cases) groups (all P<0.05). There was significant difference in the maximum tumor diameter between TPOAb+and TPOAb-(220 cases) groups (P<0.05). Analysis of risk factors for cervical lymph node metastasis showed that independent risk factors for central lymph node metastasis were maximum tumor diameter>2 cm (OR=2.84, 95%CI: 1.59-5.07, P<0.001) and extra-thyroid extension (OR=0.32, 95%CI: 0.17-0.60, P<0.001), and independent risk factors for lateral neck lymph node metastasis included age≤14 years old (OR=0.34, 95%CI: 0.18-0.67, P=0.002), preoperative Tg+(OR=2.16, 95%CI: 1.10-4.24, P=0.026) and maximum tumor diameter>2 cm (OR=3.99, 95%CI: 2.33-6.82, P<0.001). Conclusion: It is recommended to test routinely serum TgAb and TPOAb before surgery in children and adolescents with PTC. Preoperative Tg+, age≤14 years, maximum tumor diameter>2 cm, and extra-thyroid extension are risk factors for cervical lymph node metastasis.
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Affiliation(s)
- D M Huang
- Department of Thyroid and Neck Oncology, Cancer Hospital of Tianjin Medical University, National Cancer Research Center, Tianjin Key Laboratory of Cancer Prevention, Tianjin Medical Research Center for Malignant Tumor, Tianjin 300060, China
| | - J T Zhi
- Department of Thyroid and Neck Oncology, Cancer Hospital of Tianjin Medical University, National Cancer Research Center, Tianjin Key Laboratory of Cancer Prevention, Tianjin Medical Research Center for Malignant Tumor, Tianjin 300060, China
| | - J M Zhang
- Department of Thyroid and Neck Oncology, Cancer Hospital of Tianjin Medical University, National Cancer Research Center, Tianjin Key Laboratory of Cancer Prevention, Tianjin Medical Research Center for Malignant Tumor, Tianjin 300060, China
| | - X Q Zheng
- Department of Thyroid and Neck Oncology, Cancer Hospital of Tianjin Medical University, National Cancer Research Center, Tianjin Key Laboratory of Cancer Prevention, Tianjin Medical Research Center for Malignant Tumor, Tianjin 300060, China
| | - J Z Zhao
- Department of Thyroid and Neck Oncology, Cancer Hospital of Tianjin Medical University, National Cancer Research Center, Tianjin Key Laboratory of Cancer Prevention, Tianjin Medical Research Center for Malignant Tumor, Tianjin 300060, China
| | - S F Wei
- Department of Thyroid and Neck Oncology, Cancer Hospital of Tianjin Medical University, National Cancer Research Center, Tianjin Key Laboratory of Cancer Prevention, Tianjin Medical Research Center for Malignant Tumor, Tianjin 300060, China
| | - M Gao
- Department of Thyroid and Neck Oncology, Cancer Hospital of Tianjin Medical University, National Cancer Research Center, Tianjin Key Laboratory of Cancer Prevention, Tianjin Medical Research Center for Malignant Tumor, Tianjin 300060, China Department of Breast and Thyroid Surgery, Tianjin People's Hospital, Tianjin 300191, China
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Li WJ, Huang ZF, Zhu HQ, Liu Y, Zhang RF, Li GP, Xu M, Hao CL, Zhang SP, Yu YM, Huang DM, Ren HL, Sun X, Sun Y, Ma JH, Li XL, Sun BQ. [Epidemiological investigation on allergic diseases related to animal dander of cats, dogs and horses]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1279-1288. [PMID: 36207892 DOI: 10.3760/cma.j.cn112150-20220529-00542] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: A multicenter Chinese mainland survey was conducted to investigate the sensitization distribution characteristics of cat, dog and horse dander in patients with allergic diseases, so as to provide clinicians with epidemiological data of common animal allergens and useful information for the prevention and treatment of allergies in cats, dogs and horses. Methods: The epidemiological investigation and design was adopted. This study is based on the national epidemiological survey of allergic diseases led by the first affiliated Hospital of Guangzhou Medical University. From January to December in 2021, a total of 2 122 patients diagnosed with allergic diseases were included in the outpatient department of respiratory department/pediatrics/allergy department of 14 units such as the First Affiliated Hospital of Guangzhou Medical University, and 222 healthy subjects were included as controls from the physical examination center of the above units in the same period. All the subjects filled out the allergic disease questionnaire under the guidance of doctors, and the allergen-specific immunoglobulin E (sIgE) of cats, dogs and horses of all subjects were detected by magnetic particle chemiluminescence system. The epidemiological characteristics of three animal allergens in different diseases, ages and regions were analyzed. Chi square test was used to analyze the frequency difference between groups, t test or Mann Whitney U test was used to test the distribution difference between two groups, and one-way ANOVA or Kruskal Wallis H test was used to compare the distribution difference between multiple groups. Bar chart, Venn-plot and radar chart were drawn to show the sensitization distribution characteristics. A small number of missing values caused by subjects' omission have been excluded during the analysis. Results: The 2 122 patients with allergic diseases were 57.35% male (1 217/2 122) and 40.95% female (869/2 122), and 1.70% (36/2 122) patients had loss of gender information. The age of patients with allergic diseases was 9.0 (6.0, 28.0) years, while that of healthy controls was 29.0 (13.0, 39.0) years old, and there were 1.7% (36/2 122) and 0.9% (2/222) subjects with missing age information, respectively. The proportion of caesarean section in allergic patients was significantly higher than that in healthy controls (31.4% vs. 17.6%,χ2=16.582,P<0.001) [2.5% (54/2 122) of the patient group and 5.4% (12/222) of the control group had missing birth mode information], and the proportion of patients with allergic diseases who reported that both parents had allergic diseases was significantly higher than that of the control group (35.7% vs. 9.5%, χ2=65.171,P<0.001). Patients with allergic diseases are mainly school-age (6-12 years old) and adolescents (12-18 years old). 16.4% of patients with allergic diseases were sensitized to cat dander, 10% and 6% to dog and horse dander. The sensitization rate of cat dander in patients with rhinitis, asthma, conjunctivitis, food allergy and atopic dermatitis was the highest (16.4%-21.6%), followed by dog dander (10.2%-15.2%). The prevalence of allergic rhinitis was the highest among different animal sensitized populations. The proportion of cat, dog and horse allergens sensitized at the same time is between 10%-15%, and the proportion of any two or more animal dander sensitized at the same time is about 45%. Animal allergens are associated with respiratory allergic diseases, especially allergic rhinitis with allergic conjunctivitis. There were significant differences in the distribution of positive rates of three animal allergens in different regions, and the highest positive rate of cat dander was found in all provinces of the country. Conclusion: The sensitization rate of animal dander allergens increased significantly, and the highest was in children and adolescents. Cat dander is the most common animal allergen, followed by dog. Different animals show obvious cross or common sensitization due to their high homology.
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Affiliation(s)
- W J Li
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, Department of Allergy and Immunology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Z F Huang
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, Department of Allergy and Immunology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - H Q Zhu
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, Department of Allergy and Immunology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Y Liu
- Asthma Prevention and Treatment Center of Gansu Provincial People's Hospital, Lanzhou 730013, China
| | - R F Zhang
- Department of Pediatrics, Department of International Medicine, Gansu Maternal and Child Health Hospital, Lanzhou 730050, China
| | - G P Li
- Department of Respiratory and Critical Medicine, Chengdu Third People's Hospital, Chengdu 610014, China
| | - M Xu
- Department of Allergy, People's Hospital Affiliated to Inner Mongolia Medical University, Hohhot 010030, China
| | - C L Hao
- Department of Respiratory, Children's Hospital Affiliated to Suzhou University, Suzhou 215127, China
| | - S P Zhang
- Department of Laboratory, Weifang Weien Hospital, Weifang 261045, China
| | - Y M Yu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Kunming Medical University, Kunming 650031, China
| | - D M Huang
- Department of Pediatrics, Zhongshan Pok'ai Hospital, Zhongshan 528405,China
| | - H L Ren
- Department of Allergy, Beijing Electric Power Hospital, Beijing 100073, China
| | - X Sun
- Department of Pediatrics, Xijing Hospital, Air Force Military Medical University, Xi'an 710032, China
| | - Y Sun
- General Pediatrics, Yinchuan Maternal and Child Health Hospital, Yinchuan 750001, China
| | - J H Ma
- Department of Pediatrics, General Hospital of Ningxia Medical University, Yinchuan 750003, China
| | - X L Li
- Department of Allergy (Allergy), the First Hospital, Hebei Medical University, Shijiazhuang 050030, China
| | - B Q Sun
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, Department of Allergy and Immunology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
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Gao YX, Zhang L, Zhou XD, Huang DM. [Effect of straight-line minimally invasive access cavity on the mechanical properties of maxillary first premolars: a finite element analysis]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:52-59. [PMID: 35012252 DOI: 10.3760/cma.j.cn112144-20210927-00441] [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: 06/14/2023]
Abstract
Objective: To investigate the effects of straight-line minimally invasive access cavity on the mechanical properties of endodontically treated maxillary first premolars using finite element analysis. Methods: Micro-CT data of twenty maxillary first premolars were collected for three-dimensional reconstruction. Three access cavities, including the conventional access cavity (ConvAC), the truss access cavity (TrussAC) and the straight-line minimally invasive access cavity (SMIAC), as well as the root canal treatment procedure, were simulated in all the 20 reconstruction samples of three-dimensional models, respectively. The peak von Mises stress on the cervical area of each model, as well as the stress distribution under vertical and oblique loading circumstances, were subsequently determined by using finite element analysis. Results: In comparison to the stresses of ConvAC [buccal cervical (BC): (188.7±13.4) MPa, palatal cervical (PC): (200.9±25.7) MPa], the stresses of TrussAC [BC: (146.0±12.9) MPa, PC: (167.6±15.9) MPa] (t=9.01, P<0.001; t=4.59, P<0.001) and SMIAC [BC: (142.6±13.7) MPa, PC: (168.1±17.4) MPa] (t=9.64, P<0.001; t=3.76, P=0.004) significantly reduced the peak von Mises stress on the cervical area of the maxillary first premolars after root canal treatment. Under vertical loading conditions, SMIAC also reduced the central tendency of stresses on the occlusal surface, cervical area and root. In the case of oblique loading conditions, similar results were observed. Under both loading conditions, there was no significant difference in the peak von Mises stress on the cervical area of the maxillary first premolar between TrussAC and SMIAC groups. Conclusions: The design of SMIAC could preserve the mechanical properties of the maxillary first premolar following root canal treatment, which might have certain clinical feasibility.
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Affiliation(s)
- Y X Gao
- Deptartment of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - L Zhang
- Deptartment of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - X D Zhou
- West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - D M Huang
- Deptartment of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
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Hsieh CC, Hsu SC, Yao M, Huang DM. CD9 Upregulation-Decreased CCL21 Secretion in Mesenchymal Stem Cells Reduces Cancer Cell Migration. Int J Mol Sci 2021; 22:ijms22041738. [PMID: 33572290 PMCID: PMC7915477 DOI: 10.3390/ijms22041738] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/30/2021] [Accepted: 02/05/2021] [Indexed: 12/12/2022] Open
Abstract
Tetraspanin CD9 is widely expressed on various cell types, such as cancer cells and mesenchymal stem cells (MSCs), and/or cell-released exosomes. It has been reported that exosomal CD9 plays an important role in intercellular communications involved in cancer cell migration and metastasis. However, reports on the effect of the CD9 of MSCs or MSC-derived exosomes on cancer cell migration are still lacking. In this study, using a transwell migration assay, we found that both dextran-coated iron oxide nanoparticles (dex-IO NPs) and ionomycin stimulated exosomal CD9 expression in human MSCs (hMSCs); however, hMSCs could not deliver them to melanoma cells to affect cell migration. Interestingly, a reduced migration of melanoma cell line was observed when the ionomycin-incubated hMSC-conditioned media but not dex-IO NP-labeled hMSC-conditioned media were in the bottom chamber. In addition, we found that dex-IO NPs decreased cellular CD9 expression in hMSCs but ionomycin increased this. Simultaneously, we found that ionomycin suppressed the expression and secretion of the chemokine CCL21 in hMSCs. The silencing of CD9 demonstrated an inhibitory role of cellular CD9 in CCL21 expression in hMSCs, suggesting that ionomycin could upregulate cellular CD9 to decrease CCL21 expression and secretion of hMSCs, which would reduce the migration of B16F10, A549 and U87MG cancer cell lines due to chemoattraction reduction of CCL21. The present study not only highlights the important role of bone marrow-derived hMSCs' CD9-mediated CCL21 regulation in cancer bone metastasis but also suggests a new distinct pharmaceutical strategy for prevention or/and therapy of cancer metastasis.
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Affiliation(s)
- Chia-Chu Hsieh
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan;
| | - Szu-Chun Hsu
- Department of Laboratory Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan;
| | - Ming Yao
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan;
| | - Dong-Ming Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan;
- Correspondence: ; Tel.: +886-37-246-166 (ext. 38105)
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Wu SH, Hsieh CC, Hsu SC, Yao M, Hsiao JK, Wang SW, Lin CP, Huang DM. RBC-derived vesicles as a systemic delivery system of doxorubicin for lysosomal-mitochondrial axis-improved cancer therapy. J Adv Res 2020; 30:185-196. [PMID: 34026295 PMCID: PMC8132207 DOI: 10.1016/j.jare.2020.11.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 07/10/2020] [Revised: 11/19/2020] [Accepted: 11/22/2020] [Indexed: 01/07/2023] Open
Abstract
Introduction Chemotherapeutic drugs are the main intervention for cancer management, but many drawbacks impede their clinical applications. Nanoparticles as drug delivery systems (DDSs) offer much promise to solve these limitations. Objectives A novel nanocarrier composed of red blood cell (RBC)-derived vesicles (RDVs) surface-linked with doxorubicin (Dox) using glutaraldehyde (glu) to form Dox-gluRDVs was investigated for improved cancer therapy. Methods We investigated the in vivo antineoplastic performance of Dox-gluRDVs through intravenous (i.v.) administration in the mouse model bearing subcutaneous (s.c.) B16F10 tumor and examined the in vitro antitumor mechanism and efficacy in a panel of cancer cell lines. Results Dox-gluRDVs can exert superior anticancer activity than free Dox in vitro and in vivo. Distinct from free Dox that is mainly located in the nucleus, but instead Dox-gluRDVs release and efficiently deliver the majority of their conjugated Dox into lysosomes. In vitro mechanism study reveals the critical role of lysosomal Dox accumulation-mediated mitochondrial ROS overproduction followed by the mitochondrial membrane potential loss and the activation of apoptotic signaling for superior anticancer activity of Dox-gluRDVs. Conclusion This work demonstrates the great potential of RDVs to serve a biological DDS of Dox for systemic administration to improve conventional cancer chemotherapeutics.
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Affiliation(s)
- Shu-Hui Wu
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Chia-Chu Hsieh
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Szu-Chun Hsu
- Department of Laboratory Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan
| | - Ming Yao
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan
| | - Jong-Kai Hsiao
- Department of Medical Imaging, Taipei Tzu Chi General Hospital, Buddhist Tzu-Chi Medical Foundation, New Taipei City 23142, Taiwan.,School of Medicine, Tzu Chi University, Hualien 97004, Taiwan
| | - Shih-Wei Wang
- Department of Medicine, Mackay Medical College, New Taipei City 252005, Taiwan
| | - Chih-Peng Lin
- Department of Anesthesiology, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei 100225, Taiwan
| | - Dong-Ming Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli 35053, Taiwan
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9
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Wang SW, Lee CH, Lin MS, Chi CW, Chen YJ, Wang GS, Liao KW, Chiu LP, Wu SH, Huang DM, Chen L, Shen YS. ZnO Nanoparticles Induced Caspase-Dependent Apoptosis in Gingival Squamous Cell Carcinoma through Mitochondrial Dysfunction and p70S6K Signaling Pathway. Int J Mol Sci 2020; 21:ijms21051612. [PMID: 32111101 PMCID: PMC7084801 DOI: 10.3390/ijms21051612] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/07/2020] [Accepted: 02/20/2020] [Indexed: 12/17/2022] Open
Abstract
Zinc oxide nanoparticles (ZnO-NPs) are increasingly used in sunscreens, food additives, pigments, rubber manufacture, and electronic materials. Several studies have shown that ZnO-NPs inhibit cell growth and induce apoptosis by the production of oxidative stress in a variety of human cancer cells. However, the anti-cancer property and molecular mechanism of ZnO-NPs in human gingival squamous cell carcinoma (GSCC) are not fully understood. In this study, we found that ZnO-NPs induced growth inhibition of GSCC (Ca9-22 and OECM-1 cells), but no damage in human normal keratinocytes (HaCaT cells) and gingival fibroblasts (HGF-1 cells). ZnO-NPs caused apoptotic cell death of GSCC in a concentration-dependent manner by the quantitative assessment of oligonucleosomal DNA fragmentation. Flow cytometric analysis of cell cycle progression revealed that sub-G1 phase accumulation was dramatically induced by ZnO-NPs. In addition, ZnO-NPs increased the intracellular reactive oxygen species and specifically superoxide levels, and also decreased the mitochondrial membrane potential. ZnO-NPs further activated apoptotic cell death via the caspase cascades. Importantly, anti-oxidant and caspase inhibitor clearly prevented ZnO-NP-induced cell death, indicating the fact that superoxide-induced mitochondrial dysfunction is associated with the ZnO-NP-mediated caspase-dependent apoptosis in human GSCC. Moreover, ZnO-NPs significantly inhibited the phosphorylation of ribosomal protein S6 kinase (p70S6K kinase). In a corollary in vivo study, our results demonstrated that ZnO-NPs possessed an anti-cancer effect in a zebrafish xenograft model. Collectively, these results suggest that ZnO-NPs induce apoptosis through the mitochondrial oxidative damage and p70S6K signaling pathway in human GSCC. The present study may provide an experimental basis for ZnO-NPs to be considered as a promising novel anti-tumor agent for the treatment of gingival cancer.
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Affiliation(s)
- Shih-Wei Wang
- Department of Medicine, MacKay Medical College, New Taipei City 252, Taiwan;
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chien-Hsing Lee
- Department of Pharmacology, Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Ming-Shen Lin
- Department of Water Resources and Environmental Engineering, Tamkang University, New Taipei City 251, Taiwan;
| | - Chih-Wen Chi
- Department of Nursing, MacKay Medical College, New Taipei City 252, Taiwan;
- Department of Medical Research, MacKay Memorial Hospital, Taipei 104, Taiwan
| | - Yu-Jen Chen
- MacKay Junior College of Medicine, Nursing, and Management, Taipei 112, Taiwan;
- Department of Radiation Oncology, MacKay Memorial Hospital, Taipei 104, Taiwan
| | - Guo-Shou Wang
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan; (G.-S.W.); (K.-W.L.)
- Department of Orthopaedics, MacKay Memorial Hospital, Taipei 104, Taiwan
| | - Kuang-Wen Liao
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan; (G.-S.W.); (K.-W.L.)
- Institute of Molecular Medicine and Bioengineering, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Li-Pin Chiu
- General Education Center, University of Taipei, Taipei 100, Taiwan;
- Division of General Surgery, Taipei City Hospital, Taipei 103, Taiwan
| | - Shu-Hui Wu
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 350, Taiwan;
| | - Dong-Ming Huang
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 350, Taiwan;
- Correspondence: (D.-M.H.); (L.C.); (Y.-S.S.); Tel.: +886-37-246-166 (ext. 38105) (D.-M.H.); +886-2-2621-5656 (ext. 2682) (L.C.); +886-2-2636-0303 (ext. 1422) (Y.-S.S.)
| | - Luke Chen
- Department of Water Resources and Environmental Engineering, Tamkang University, New Taipei City 251, Taiwan;
- Correspondence: (D.-M.H.); (L.C.); (Y.-S.S.); Tel.: +886-37-246-166 (ext. 38105) (D.-M.H.); +886-2-2621-5656 (ext. 2682) (L.C.); +886-2-2636-0303 (ext. 1422) (Y.-S.S.)
| | - Yung-Shuen Shen
- Institute of Geriatric Welfare Technology and Science, MacKay Medical College, New Taipei City 252, Taiwan
- Correspondence: (D.-M.H.); (L.C.); (Y.-S.S.); Tel.: +886-37-246-166 (ext. 38105) (D.-M.H.); +886-2-2621-5656 (ext. 2682) (L.C.); +886-2-2636-0303 (ext. 1422) (Y.-S.S.)
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10
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Liu XT, Wang GL, Rong JY, Huang J, Lin JB, Huang DM, Lin HL, Wang BJ. [Correlation between fractional exhaled nitric oxide and airway reversibility in children with IgE-mediated asthma]. Zhongguo Dang Dai Er Ke Za Zhi 2019; 21:1172-1176. [PMID: 31874654 PMCID: PMC7389013 DOI: 10.7499/j.issn.1008-8830.2019.12.004] [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] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To study the correlation between fractional exhaled nitric oxide (FeNO) and airway reversibility in children with IgE-mediated asthma. METHODS A total of 86 children, aged 6-14 years, who were initially diagnosed with acute attack of asthma from September 2016 to August 2018 were enrolled as subjects. According to the results of serum specific IgE, they were divided into IgE mediated group with 61 children and non-IgE mediated group with 25 children. According to the results of allergen detection, the IgE mediated group was further divided into four groups with one, two, three, and four or more positive allergens. FeNO and the parameters of pulmonary ventilation function before and after dilation test were measured. Pearson correlation analysis was used to evaluate the correlation of FeNO with each parameter of pulmonary function. RESULTS The IgE mediated group had significantly higher FeNO than the non-IgE mediated group (P<0.05). FeNO increased with the increase in the number of positive serum specific allergens (P<0.05). In the IgE mediated group, FeNO level was positively correlated with the change in forced expiratory volume in the first second (FEV1) and the improvement in percentage of predicted FEV1 after medication in bronchial dilation test (r=0.655 and 0.473 respectively, P<0.05). The FeNO level was not correlated with FEV1, percentage of predicted FEV1, peak expiratory flow (PEF), change in PEF after medication, percentage of predicted PEF (PEF%pred), and improvement in PEF%pred after medication (P>0.05). In the non-IgE mediated group, FeNO level was not correlated with the above indicators (P>0.05). CONCLUSIONS FeNO level is associated with the degree of allergies. For children with IgE-mediated asthma, FeNO is positively correlated with airway reversibility, which has a certain value in the diagnosis of asthma, disease evaluation, and understanding of airway reversibility. For children with non-IgE-mediated asthma, FeNO cannot be used to evaluate airway reversibility. These two types of asthma should be treated differently.
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Affiliation(s)
- Xiang-Teng Liu
- Department of Pediatric Respiratory Medicine, Boai Hospital of Zhongshan Affiliated to Southern Medical University, Zhongshan, Guangdong 528403, China.
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11
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Liu XT, Wang GL, Rong JY, Huang J, Lin JB, Huang DM, Lin HL, Wang BJ. [Correlation between fractional exhaled nitric oxide and airway reversibility in children with IgE-mediated asthma]. Zhongguo Dang Dai Er Ke Za Zhi 2019; 21:1172-1176. [PMID: 31874654 PMCID: PMC7389013] [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] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 10/29/2019] [Indexed: 11/04/2023]
Abstract
OBJECTIVE To study the correlation between fractional exhaled nitric oxide (FeNO) and airway reversibility in children with IgE-mediated asthma. METHODS A total of 86 children, aged 6-14 years, who were initially diagnosed with acute attack of asthma from September 2016 to August 2018 were enrolled as subjects. According to the results of serum specific IgE, they were divided into IgE mediated group with 61 children and non-IgE mediated group with 25 children. According to the results of allergen detection, the IgE mediated group was further divided into four groups with one, two, three, and four or more positive allergens. FeNO and the parameters of pulmonary ventilation function before and after dilation test were measured. Pearson correlation analysis was used to evaluate the correlation of FeNO with each parameter of pulmonary function. RESULTS The IgE mediated group had significantly higher FeNO than the non-IgE mediated group (P<0.05). FeNO increased with the increase in the number of positive serum specific allergens (P<0.05). In the IgE mediated group, FeNO level was positively correlated with the change in forced expiratory volume in the first second (FEV1) and the improvement in percentage of predicted FEV1 after medication in bronchial dilation test (r=0.655 and 0.473 respectively, P<0.05). The FeNO level was not correlated with FEV1, percentage of predicted FEV1, peak expiratory flow (PEF), change in PEF after medication, percentage of predicted PEF (PEF%pred), and improvement in PEF%pred after medication (P>0.05). In the non-IgE mediated group, FeNO level was not correlated with the above indicators (P>0.05). CONCLUSIONS FeNO level is associated with the degree of allergies. For children with IgE-mediated asthma, FeNO is positively correlated with airway reversibility, which has a certain value in the diagnosis of asthma, disease evaluation, and understanding of airway reversibility. For children with non-IgE-mediated asthma, FeNO cannot be used to evaluate airway reversibility. These two types of asthma should be treated differently.
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Affiliation(s)
- Xiang-Teng Liu
- Department of Pediatric Respiratory Medicine, Boai Hospital of Zhongshan Affiliated to Southern Medical University, Zhongshan, Guangdong 528403, China.
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12
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Bennett HA, Cazzolato BS, Huang DM, Zander AC. Waveshape distortion of high frequency acoustic waves in gas media. Ultrasonics 2019; 96:149-159. [PMID: 30773301 DOI: 10.1016/j.ultras.2019.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/31/2019] [Accepted: 02/04/2019] [Indexed: 06/09/2023]
Abstract
In molecular dynamics simulations of an acoustic domain excited by a sinusoidally oscillating plane acoustic source in the frequency range of hundreds of megahertz, the density and velocity perturbations adjacent to the source are observed to be non-sinusoidal in shape. This distortion in the shape of the waves is investigated using a number of simulations of frequencies in the hundred of megahertz range and velocities up to 0.50 Å/ps. The relative distortion of the wave shape is characterised by a developed nested trigonometric function. The distortion is shown to be a function of the Mach number of the acoustic source rather than the source velocity amplitude. Trends in the distortion with source amplitude and frequency indicate that distortion of the velocity and density are independent of frequency. It is shown that the density and velocity perturbation can be approximated for any sound source Mach number within the range examined using the parametrised developed equation. The developed approximation could be used to accurately simulate the influence of an oscillating plane using a stationary analytical source. This could be used to develop a hybrid molecular/continuum model that will allow lower frequency simulations. The improved understanding of the causes of the distorted high frequency waveshape could also improve the fidelity of parametric arrays.
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Affiliation(s)
- H A Bennett
- School of Mechanical Engineering, The University of Adelaide, Australia.
| | - B S Cazzolato
- School of Mechanical Engineering, The University of Adelaide, Australia
| | - D M Huang
- Department of Chemistry, School of Physical Sciences, The University of Adelaide, Australia
| | - A C Zander
- School of Mechanical Engineering, The University of Adelaide, Australia
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13
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Lu WL, Zhang L, Song DZ, Yi XW, Xu WZ, Ye L, Huang DM. NLRP6 suppresses the inflammatory response of human periodontal ligament cells by inhibiting NF-κB and ERK signal pathways. Int Endod J 2019; 52:999-1009. [PMID: 30712265 DOI: 10.1111/iej.13091] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [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: 02/07/2018] [Accepted: 01/29/2019] [Indexed: 02/05/2023]
Abstract
AIM To explore the function and mechanisms of NLRP6 (NOD-, LRR- and pyrin domain-containing 6) in the inflammatory response of human periodontal ligament cells (HPDLCs). METHODOLOGY Tissues associated with apical periodontitis were obtained from three patients who underwent endodontic microsurgery. The expression of NLRP6 in 3 human apical periodontitis tissues and HPDLCs was examined by immunohistochemistry and immunofluorescence, respectively. The expressions of NLRP6, Phospho(p)- p65, p65, IκB-α, p- IκB-α, ERK, p- ERK, NLRP3, Pro interleukin (IL)-1β, Pro caspase-1 and apoptosis-associated speck-like protein containing a CARD (ASC) were examined by western blot. The gene expression and secretion of proinflammatory cytokines were detected using quantitative real-time polymerase chain reaction and enzyme-linked immunosorbent assay. Data were analysed statistically with independent sample t-tests. RESULTS NLRP6 was expressed in inflammatory periapical tissues and HPDLCs. Lipopolysaccharide (LPS) from Escherichia coli induced NLRP6 in HPDLCs (P < 0.05). After silencing NLRP6, E. coli LPS-induced activation of NF-κB and ERK signalling was enhanced, which was also accompanied by elevated levels of IL-6 and tumour necrosis factor-α (TNF-α) (P < 0.05). Moreover, knockdown of NLRP6 led to up-regulation of NLRP3, Pro IL-1β and Pro caspase-1 (P < 0.05), whereas down-regulation of ASC (P < 0.05), which may contribute to unchanged levels of IL-1β in HPDLCs inflammation. CONCLUSION NLRP6 was functionally expressed in inflamed periapical tissues and HPDLCs. NLRP6 negatively regulated the production of IL-6 and TNF-α in HPDLCs inflammation by inhibiting NF-κB and ERK signal pathways.
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Affiliation(s)
- W L Lu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China
- Department of Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - L Zhang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - D Z Song
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X W Yi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - W Z Xu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Ye
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - D M Huang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
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14
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Huang DM, Li JY, Xu X. [Clinical management of the intentional tooth replantation]. Zhonghua Kou Qiang Yi Xue Za Zhi 2018; 53:392-397. [PMID: 29886633 DOI: 10.3760/cma.j.issn.1002-0098.2018.06.006] [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] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Intentional tooth replantation is the last resort for saving natural teeth in treatment of the endodontic diseases. In order to promote the utilization, standardize the operation and improve the success rate of this treatment, this review suggests the indication, discusses the key points of the surgical procedure, proposes the path of the diagnosis and the treatment protocol of the intentional replantation.
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Affiliation(s)
- D M Huang
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - J Y Li
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
| | - X Xu
- Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Chengdu 610041, China
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15
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Chung TH, Hsu SC, Wu SH, Hsiao JK, Lin CP, Yao M, Huang DM. Dextran-coated iron oxide nanoparticle-improved therapeutic effects of human mesenchymal stem cells in a mouse model of Parkinson's disease. Nanoscale 2018; 10:2998-3007. [PMID: 29372743 DOI: 10.1039/c7nr06976f] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Parkinson's disease (PD) is a prevalent neurodegenerative disease characterized by the loss of dopaminergic (DA) neurons. With their migration capacity toward the sites of diseased DA neurons in the PD brain, mesenchymal stem cells (MSCs) have the potential to differentiate to DA neurons for the replacement of damaged neurons and to secrete neurotrophic factors for the protection and regeneration of diseased DA neurons; therefore MSCs show promise for the treatment of PD. In this study, for the first time, we demonstrate that dextran-coated iron oxide nanoparticles (Dex-IO NPs) can improve the therapeutic efficacy of human MSCs (hMSCs) in a mouse model of PD induced by a local injection of 6-hydroxydopamine (6-OHDA). In situ examinations not only show that Dex-IO NPs can improve the rescue effect of hMSCs on the loss of host DA neurons but also demonstrate that Dex-IO NPs can promote the migration capacity of hMSCs toward lesioned DA neurons and induce the differentiation of hMSCs to DA-like neurons at the diseased sites. We prove that in vitro Dex-IO NPs can enhance the migration of hMSCs toward 6-OHDA-damaged SH-SY5Y-derived DA-like cells, induce hMSCs to differentiate to DA-like neurons in the conditioned media derived from 6-OHDA-damaged SH-SY5Y-derived DA-like cells and promote the protection/regeneration effects of hMSCs on 6-OHDA-damaged SH-SY5Y-derived DA-like cells. We confirm the potential of MSCs for cell-based therapy for PD. Dex-IO NPs can be used as a tool to accelerate and optimize MSC therapeutics for PD applicable clinically.
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Affiliation(s)
- Tsai-Hua Chung
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 35053, Taiwan.
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16
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Zheng QH, Hong QC, Zhang L, Ye L, Huang DM. A Clinical Study on the Effect of Injection Sites on Efficacy of Anesthesia and Pulpal Blood Flow in Carious Teeth. Oper Dent 2017; 43:22-30. [PMID: 28976844 DOI: 10.2341/16-371-c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This randomized clinical trial evaluated the efficiency of maxillary infiltration anesthesia in carious teeth at two different injection sites and their impact on the laser Doppler recordings of pulpal blood flow (PBF) during a caries excavation procedure. The null hypothesis tested was that there are no differences in the efficiency of anesthesia and PBF reduction between maxillary infiltrations at the two injection sites. One hundred twenty patients were divided into three groups according to the degree of carious lesion of their maxillary left central incisors (moderate caries, deep caries, or no caries). Forty patients in each group randomly received infiltrations over the root apex of maxillary left central incisors (site X) or over the midpoint of the line connecting the root apexes of both maxillary left central and lateral incisors (site Y) using 0.9 mL 2% lidocaine with 1:100,000 adrenaline. Teeth were pulp tested at five-minute intervals after injection except for the period of cavity cutting, which was done 12 minutes after injection. The PBF changes after injection were monitored by laser Doppler flowmetry. The observation period in this study was 60 minutes. Success of anesthesia was defined as no or mild pain on cavity cutting by visual analog scale recordings. Deep caries group showed significantly higher baseline PBF ( p<0.05). All groups showed 100% success of anesthesia and similar duration time ( p>0.05). Subgroups that had the injection at site Y showed significantly less reduction of PBF ( p<0.05). Cavity-cutting procedures increased the amplitude of the PBF around the lowest value after injection. Independent of the cavity depth, carious anterior teeth anesthetized by infiltration further from the apex had significantly less reduction on the pulpal blood flow compared with teeth anesthetized by infiltration at the apex.
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17
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Huang DM, Li YB. LETTER TO THE EDITOR Letter to editor about the article: "Association between the interleukin-6-174 G/C polymorphism and risk of ischemic stroke: a meta-analysis", published in Genet. Mol. Res. 14 (4): 13076-13083 (2015). Genet Mol Res 2016; 15:gmr-15-gmr15049400. [PMID: 27813614 DOI: 10.4238/gmr15049400] [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: 02/05/2023]
Affiliation(s)
- D M Huang
- Department of Pediatric Surgery, West China Hospital, Sichuan University Chengdu, Sichuan, China
| | - Y B Li
- Department of Pediatric Surgery, West China Hospital, Sichuan University Chengdu, Sichuan, China
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Chung TH, Hsieh CC, Hsiao JK, Hsu SC, Yao M, Huang DM. Dextran-coated iron oxide nanoparticles turn protumor mesenchymal stem cells (MSCs) into antitumor MSCs. RSC Adv 2016. [DOI: 10.1039/c6ra03453e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
dex-IO NPs can activate the antitumor mechanism (tumor tropism) but inactivate protumor mechanisms to transform protumor MSCs (pT-MSCs) into antitumor MSCs (aT-MSCs).
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Affiliation(s)
- Tsai-Hua Chung
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County 35053
- Taiwan
| | - Chia-Chu Hsieh
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County 35053
- Taiwan
- Institute of Molecular Medicine
| | - Jong-Kai Hsiao
- Department of Medical Imaging
- Taipei Tzu Chi General Hospital
- Buddhist Tzu Chi Medical Foundation & School of Medicine
- Tzu Chi University
- New Taipei City 23142
| | - Szu-Chun Hsu
- Department of Laboratory Medicine
- National Taiwan University Hospital and College of Medicine
- National Taiwan University
- Taipei 10002
- Taiwan
| | - Ming Yao
- Department of Internal Medicine
- National Taiwan University Hospital and College of Medicine
- National Taiwan University
- Taipei 10002
- Taiwan
| | - Dong-Ming Huang
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County 35053
- Taiwan
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Huang J, Huang DM, Xiao XX, Fu SM, Luo CM, Zeng G, Wang YH, Wang KM, Ruan J, Zhen BQ, Li M, Li L, Cui BY, Huang GZ, Wang GL, Rong JY, Huang JM, Xiao QQ, Guo XL. [Epidemiological survey of asthma among children aged 0-14 years in 2010 in urban Zhongshan, China]. Zhongguo Dang Dai Er Ke Za Zhi 2015; 17:149-154. [PMID: 25760839] [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: 06/04/2023]
Abstract
OBJECTIVE To investigate the prevalence, current treatment, and clinical characteristics of asthma, as well as the risk factors for this disease, among children aged 0-14 years in 2010 in urban Zhongshan, China. METHODS A total of 10 336 children aged 0-14 years were selected from urban Zhongshan by cluster random sampling. The Third National Childhood Asthma Epidemiological Questionnaire 2010 was used to analyze the prevalence, current treatment, and clinical characteristics of childhood asthma, as well as the risk factors for this disease. RESULTS Asthma was diagnosed in 179 cases (1.73%). The prevalence of asthma in male children was significantly higher than that in female children (2.25% vs 1.16%; P<0.01). Of the 179 patients, severe attacks were common in 104 cases (58.1%), 110 cases (61.5%) had slow onset, 102 cases (57.0%) had gradually relieved conditions, 61 cases (34.1%) suffered from asthma during seasonal transition, and 150 cases (83.8%) developed asthma due to respiratory tract infection. Among all asthmatic children, 71.5% had been treated with inhaled corticosteroids, and 71.5% had been treated with bronchodilator. The multivariate logistic regression analysis showed that a history of penicillin allergy, a family history of allergy, food allergy, eczema, allergic rhinitis, cesarean delivery, family mould, and perinatal passive smoking were independent risk factors for childhood asthma. CONCLUSIONS The prevalence of childhood asthma in urban Zhongshan is on a high level, and is associated with gender. The treatment of asthma has been standardized, but still needs further improvement. The onset of asthma attack is influenced by various factors.
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Affiliation(s)
- Juan Huang
- Department of Pediatrics, Zhongshan Bo'ai Hospital, Zhongshan, Guangdong 528400, China.
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Chung TH, Hsiao JK, Yao M, Hsu SC, Liu HM, Huang DM. Ferucarbotran, a carboxydextran-coated superparamagnetic iron oxide nanoparticle, induces endosomal recycling, contributing to cellular and exosomal EGFR overexpression for cancer therapy. RSC Adv 2015. [DOI: 10.1039/c5ra18810e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
In ferucarbotran-labeled hMSCs, the internalized EGFRs are mostly redirected from late endosomes/lysosomes to recycling endosomes, which protects the lysosomal degradation of EGFR and results in cellular (membranous) and exosomal EGFR overexpression.
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Affiliation(s)
- Tsai-Hua Chung
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County 35053
- Taiwan
| | - Jong-Kai Hsiao
- Department of Medical Imaging
- Taipei Tzu Chi General Hospital
- Buddhist Tzu Chi Medical Foundation & School of Medicine
- Tzu Chi University
- New Taipei City 23142
| | - Ming Yao
- Department of Internal Medicine
- National Taiwan University Hospital and College of Medicine
- National Taiwan University
- Taipei 10002
- Taiwan
| | - Szu-Chun Hsu
- Department of Laboratory Medicine
- National Taiwan University Hospital and College of Medicine
- National Taiwan University
- Taipei 10002
- Taiwan
| | - Hon-Man Liu
- Department of Medical Imaging
- National Taiwan University Hospital and College of Medicine
- National Taiwan University
- Taipei 10002
- Taiwan
| | - Dong-Ming Huang
- Institute of Biomedical Engineering and Nanomedicine
- National Health Research Institutes
- Miaoli County 35053
- Taiwan
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Huang DM, Xiao XX, Fu SM, Luo CM, Wang KM, Wang YH, Feng YH, Ruan J, Zheng BQ, Huang J, Li M, Cui BY, Li L, Huang GZ, Guo XL. [Incidence of wheezing and chronic cough in children aged 3-14 years in rural and urban areas of Zhongshan, China: a questionnaire survey]. Zhongguo Dang Dai Er Ke Za Zhi 2014; 16:734-739. [PMID: 25008883] [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: 06/03/2023]
Abstract
OBJECTIVE To investigate the incidence of wheezing and chronic cough in children aged 3-14 years in different living areas of Zhongshan, China. METHODS According to the unified program of the 2010 national epidemiological survey of asthmatic children aged 0-14 years, a questionnaire survey of the children aged 3-14 years in rural and urban areas of Zhongshan was conducted. RESULTS A total of 15 763 children were included in the survey. Among all participants, 8 248 were from the urban area, and 7 515 from the rual area; 8 306 were boys, and 7 457 were girls. The percentage of children with a history of wheezing was significantly higher in the urban group than in the rural group (6.6% vs 3.2%; P<0.05), and it was significantly higher in boys than in girls for each group (P<0.05). The urban group had a significantly higher percentage of individuals who had wheezing in the past one year than the rural group (2.8% vs 1.5%; P<0.05), and this percentage was significantly higher in boys than in girls for each group (P<0.05). Compared with the rural group, the urban group had a significantly higher percentage of individuals who had chronic cough (duration 1 year) (7.9% vs 3.1%; P<0.05). The above indices were relatively high in children under 6 years of age, and all but the percentage of girls who had wheezing in the past one year in both rural and urban areas showed significant differences between all age groups. CONCLUSIONS The incidence of wheezing and chronic cough varies with age, sex, and living area for children aged 3-14 years in Zhongshan, and it is relatively high under 6 years of age, in the urban area, and among boys.
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Affiliation(s)
- Dong-Ming Huang
- Pediatric Asthma and Immunotherapy Center, Zhongshan Bo'ai Hospital, Zhongshan, Guangdong 528403, China.
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22
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Mo QY, Huang DM, Xie GQ, Liang GM, Ma LZ, Fu SM. [Unintentional injuries in children: an analysis of 924 cases]. Zhongguo Dang Dai Er Ke Za Zhi 2013; 15:559-562. [PMID: 23866279] [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: 06/02/2023]
Abstract
OBJECTIVE To investigate the causes of unintentional injuries in children and to provide reference for reducing the incidence of unintentional injuries in children. METHODS A retrospective analysis was performed on the clinical data of 924 children with unintentional injuries who were hospitalized in Zhongshan Boai Hospital from January 2008 to December 2010. RESULTS Of the 924 cases, 26.4% suffered falls, which was the most common cause of injuries, 15.7% suffered burns and scalds, 14.0% were injured by foreign bodies, and 13.1% were injured in traffic accidents. Unintentional injuries occurred mainly among children aged 0-3 years (67%). The proportion of cases in summer (July to September) was significantly higher than in any other season (P < 0.05), and burns were the common causes of injuries in summer. Home was the most common place where unintentional injuries occurred (36.9%). The incidence of traffic accidents was significantly higher in non-local children than in local children (P < 0.001). As for the parents' educational levels, the children whose parents had an education level below junior middle school accounted for the highest proportion of all cases of unintentional injury (45.5%). Injuried cases in rural areas accounted for a significantly higher percentage than in urban areas (P < 0.05). CONCLUSIONS Falls are the principal cause of unintentional injuries in children. Young children (0-3 years) are most vulnerable to unintentional injuries. Unintentional injuries mostly occur at home. The incidence of traffic accidents is higher in non-local children than in local children. Parents' education levels are associated with the incidence of unintentional injuries. In order to reduce the incidence of unintentional injuries in children, preventive measures must be carried out, and safety education should be enhanced in consideration of children's age, sex and family background.
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Affiliation(s)
- Qing-Yi Mo
- Department of Pediatrics, Zhongshan Boai Hospital Affiliated to Southern Medical University, Zhongshan,Guangdong 528403, China.
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Lu Y, Wang R, Zhang L, Li HL, Zheng QH, Zhou XD, Huang DM. Apically extruded debris and irrigant with two Ni-Ti systems and hand files when removing root fillings: a laboratory study. Int Endod J 2013; 46:1125-30. [PMID: 23566178 DOI: 10.1111/iej.12104] [Citation(s) in RCA: 41] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 03/10/2013] [Indexed: 02/05/2023]
Abstract
AIM To compare the amount of apically extruded debris and irrigant produced by two Ni-Ti instruments and hand files when removing root fillings, and to compare two experimental models. METHODOLOGY Sixty single straight root canals in human mandibular premolars were prepared with K-files and filled with gutta-percha and AH Plus sealer. The teeth were randomly divided into three groups of 20 for removal of the root filling material with Reciproc files (Group 1, RP), Mtwo retreatment files (Group 2, MR) or hand files (Group 3, H). Each group was then equally divided into experimental subgroups: A, with 1.5% agar gel model (AG); B, with empty tube model (ET). Apically extruded debris and irrigant was quantified by subtracting the initial weight of the test apparatus without a tooth from its weight after the root canal retreatment. Comparative analysis of the amount of apically extruded debris and irrigant for each of the instruments and the experimental models was performed. Time for gutta-percha removal was recorded. Data were statistically analysed using one-way analysis of variance. RESULTS Removal of root fillings with two Ni-Ti instruments produced less apically extruded debris and irrigant than hand files in both experimental models (P < 0.05). More apically extruded debris and irrigant was produced with Reciproc files than Mtwo retreatment files using the 1.5% agar gel model (P > 0.05). Significantly more apically extruded debris and irrigant was produced with Reciproc files than Mtwo retreatment files using the empty tube model (P < 0.05). The time required to remove the root fillings followed Reciproc<Mtwo R<hand files (P < 0.05). CONCLUSIONS All the instruments produced apically extruded debris and irrigant. The two Ni-Ti instruments produced less apically extruded debris and irrigant than hand files. A 1.5% agar gel can provide resistance to apically extruded debris and irrigant and may represent the clinical situation better than the empty tube model.
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Affiliation(s)
- Y Lu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu
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Chung TH, Hsiao JK, Hsu SC, Yao M, Chen YC, Wang SW, Kuo MYP, Yang CS, Huang DM. Iron oxide nanoparticle-induced epidermal growth factor receptor expression in human stem cells for tumor therapy. ACS Nano 2011; 5:9807-9816. [PMID: 22053840 DOI: 10.1021/nn2033902] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Superparamagnetic iron oxide (SPIO) nanoparticles show promise as labels for cellular magnetic resonance imaging (MRI) in the application of stem cell-based therapy. However, the unaddressed concerns about the impact of SPIO nanoparticles on stem cell attributes make the feasibility of SPIO labeling uncertain. Here, we show that the labeling of human mesenchymal stem cells (hMSCs) with ferucarbotran can induce epidermal growth factor receptor (EGFR) overexpression. Labeled hMSCs with their overexpressed EGFR were attracted by tumorous EGF and more effectively migrated toward tumor than unlabeled cells, resulting in more potent intrinsic antitumor activity. Moreover, the captured binding of tumorous EGF by overexpressed EGFR of labeled hMSCs blocked EGF/EGFR signaling-derived tumor growth, tumorous angiogenesis, and tumorous VEGF expression also responsible for tumor progression and development. Our results show that the impact of SPIO nanoparticles on stem cell attributes is not necessarily harmful but can be cleverly used to be beneficial to stem cell-based therapy.
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Affiliation(s)
- Tsai-Hua Chung
- Center for Nanomedicine Research, National Health Research Institutes, Miaoli, Taiwan, Republic of China
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Abstract
A new diphenyl ether methyl 2-(2-formyl-3-hydroxy-5-methylphenoxy)-5-hydroxy-3-methoxybenzoate (3), together with four known compounds, asterric acid (1), methyl asterrate (2), 9(Z),12(Z)-nonadecadienoic acid (4) and orsellinic acid (5), were isolated from the Phoma sp. strain SHZK-2, which was isolated from a polluted environment in southern China. The structures of these compounds were determined by spectroscopic methods. Cytotoxicities of compounds against HEPG2 cell and Raji cell lines were preliminarily evaluated by the MTT method.
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Affiliation(s)
- M J Fang
- Department of Pharmaceutical Science, Medical College, Xiamen University, Xiamen, China.
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26
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Abstract
DNA can be used to nanofabricate three-dimensional (3D) polyhedra. A variety of applications of 3D DNA assemblies have been proposed. Drug encasulation and intracellular delivery using DNA nanoparticles, however, have remained a challenge. Here, we create a distinct five-point-star motif and aptamer-conjugated six-point-star motif using well-used primer sequences to intermolecularly construct DNA icosahedra as a nanocarrier for doxorubicin. Aptamer-conjugated doxorubicin-intercalated DNA icosahedra (Doxo@Apt-DNA-icosa) show an efficient and specific internalization for killing epithelial cancer cells.
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Affiliation(s)
- Microsugar Chang
- Center for Nanomedicine Research, National Health Research Institutes, Miaoli, Taiwan
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Chung TH, Yen-Ping Kuo M, Chen JK, Huang DM. YC-1 rescues cancer cachexia by affecting lipolysis and adipogenesis. Int J Cancer 2011; 129:2274-83. [PMID: 21557215 DOI: 10.1002/ijc.26174] [Citation(s) in RCA: 10] [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] [Received: 12/22/2010] [Accepted: 04/27/2011] [Indexed: 12/29/2022]
Abstract
Loss of adipose tissue, primarily due to increased lipolysis but also to an impairment of adipogenesis, is a key feature of weight loss in cancer cachexia. Because of the myriad pathogenic signaling pathways essential for atrophy of adipose tissue, effective therapeutic agents for cachectic adipose loss are lacking and urgently needed. The authors evaluated the effects of YC-1 on adipogenesis of 3T3-L1 preadipocytes, TNF-α- and tumor-cell-induced lipolysis in 3T3-L1 adipocytes, and cachectic weight loss in colon-26 adenocarcinoma-bearing mice because YC-1 has been shown to possess versatile pharmacological actions, including anticancer activity. It was found that YC-1 promotes the differentiation of 3T3-L1 preadipocytes into adipocytes through activation of Akt and extracellular signal-regulated kinase (ERK) signaling pathways as well as activation of several adipogenic mediators, such as peroxisome proliferator-activated receptor γ (PPARγ), insulin receptor α (IRα), insulin receptor substrate-3 (IRS-3) and glucose transporter-4 (GLUT-4). In the in vitro lipolysis models, YC-1 attenuates TNF-α-induced lipolysis of adipocytes by antagonizing TNF-α-mediated activation of ERK and downregulation of perilipin (PLIN). It was also found that YC-1 inhibits colon-26 adenocarcinoma cell-induced lipolysis of 3T3-L1 adipocytes. Moreover, YC-1 effectively rescues cachectic weight loss in colon-26 adenocarcinoma-bearing mice by blocking lipolysis, involving insulin. Taken together the results show that YC-1 with its anticancer and anticachexia talents is highly worth developing as a novel agent for cancer therapy.
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Affiliation(s)
- Tsai-Hua Chung
- Center for Nanomedicine Research, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
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Huang DM, Xiao XX, He XL, Cui BY, Wang YH, Li XL, Fu SM. [Risk factors for bronchial asthma in school children]. Zhongguo Dang Dai Er Ke Za Zhi 2011; 13:370-372. [PMID: 21575339] [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: 05/30/2023]
Abstract
OBJECTIVE To investigate the roles of the residential environment and eating habits in the pathogenesis of bronchial asthma in school children. METHODS One hundred and twenty-nine children between 6-12 years who were diagnosed with asthma were enrolled. Two hundred and fifty-eight healthy age- and gender-matched children were used as the control group. A questionaire which included 23 factors related to respiratory tract anaphylactic diseases such as residential environment and eating habits were completed by the children's parents. RESULTS Logistic regression analysis showed that 6 variances out of 16 agents of the residential environment, the experience of raising pets, the type of floor, the type of pillow, the type of quilts, the heating equipments and the house area, were entered into the regression equation; none of the 7 variances of eating inhabits was entered into it. CONCLUSIONS The residential environment plays an impotent role in the pathogenesis of bronchial asthma in children. The incidence of bronchial asthma in children can be reduced by the improvement of the residential environment.
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Affiliation(s)
- Dong-Ming Huang
- Department of Pediatrics, Zhongshan Bo'ai Hospital, Zhongshan, Guangdong 528403, China.
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Chien LY, Hsiao JK, Hsu SC, Yao M, Lu CW, Liu HM, Chen YC, Yang CS, Huang DM. In vivo magnetic resonance imaging of cell tropism, trafficking mechanism, and therapeutic impact of human mesenchymal stem cells in a murine glioma model. Biomaterials 2011; 32:3275-84. [PMID: 21295344 DOI: 10.1016/j.biomaterials.2011.01.042] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Accepted: 01/13/2011] [Indexed: 02/07/2023]
Abstract
Stem cells have offered much promise as delivery vehicles for brain tumor therapy, with the development of modalities to track the tumor tropism of stem cells receiving intense focus. Cellular magnetic resonance imaging (MRI) allows serial high-resolution in vivo detection of transplanted stem cells' tropism toward gliomas in the mouse brain once these cells are internally labeled with iron oxide particles, but has been impeded by low labeling efficiencies. In this study, we describe the use of ferucarbotran and protamine (Fer-Pro) complexes for labeling human mesenchymal stem cells (hMSCs) for MRI tracking of glioma tropism in vivo. We found that Fer-Pro was not toxic and was highly efficient for labeling in vitro. Cell labeling with Fer-Pro promoted the migration of hMSCs toward glioma U87MG cells in vitro, which was mediated by stromal-derived factor-1/CXCR4 (SDF-1/CXCR4) signaling. Fer-Pro-labeled hMSCs could migrate specifically toward gliomas in vivo, which was observed with a clinical 1.5-T MRI system. The efficient labeling of Fer-Pro also allowed a tropic mechanism mediated by SDF-1/CXCR4 signaling to be detected by MRI in vivo. Additionally, the potential intrinsic inhibitory effect of hMSCs on glioma progression was estimated simultaneously. This is the first report to have used a clinical MRI modality to simultaneously study the migration, the therapeutic impact on tumors, and above all the trafficking mechanism of bone marrow-derived mesenchymal stem cells from human in a murine glioma xenograft model. The use of Fer-Pro for stem cell labeling may have potential clinical applications in stem cell guided therapy.
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Affiliation(s)
- Li-Ying Chien
- Center for Nanomedicine Research, National Health Research Institutes, Miaoli 350, Taiwan
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Liang RP, Fan LX, Huang DM, Qiu JD. A Label-Free Amperometric Immunosensor Based on Redox-Active Ferrocene-Branched Chitosan/Multiwalled Carbon Nanotubes Conductive Composite and Gold Nanoparticles. ELECTROANAL 2010. [DOI: 10.1002/elan.201000534] [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: 11/10/2022]
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Chang M, Hsiao JK, Yao M, Chien LY, Hsu SC, Ko BS, Chen ST, Liu HM, Chen YC, Yang CS, Huang DM. Homologous RBC-derived vesicles as ultrasmall carriers of iron oxide for magnetic resonance imaging of stem cells. Nanotechnology 2010; 21:235103. [PMID: 20479509 DOI: 10.1088/0957-4484/21/23/235103] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Ultrasmall superparamagnetic iron oxide (USPIO) particles are very useful for cellular magnetic resonance imaging (MRI), which plays a key role in developing successful stem cell therapies. However, their low intracellular labeling efficiency, and biosafety concerns associated with their use, have limited their potential usage. In this study we develop a novel system composed of RBC-derived vesicles (RDVs) for efficient delivery of USPIO particles into human bone marrow mesenchymal stem cells (MSCs) for cellular MRI in vitro and in vivo. RDVs are highly biosafe to their autologous MSCs as manifested by cell viability, differentiation, and gene microarray assays. The data demonstrate the potential of RDVs as intracellular delivery vehicles for biomedical applications.
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Affiliation(s)
- Microsugar Chang
- Center for Nanomedicine Research, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
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Chen YC, Hsiao JK, Liu HM, Lai IY, Yao M, Hsu SC, Ko BS, Chen YC, Yang CS, Huang DM. The inhibitory effect of superparamagnetic iron oxide nanoparticle (Ferucarbotran) on osteogenic differentiation and its signaling mechanism in human mesenchymal stem cells. Toxicol Appl Pharmacol 2010; 245:272-9. [PMID: 20338187 DOI: 10.1016/j.taap.2010.03.011] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Revised: 03/11/2010] [Accepted: 03/13/2010] [Indexed: 11/26/2022]
Abstract
Superparamagnetic iron oxide (SPIO) nanoparticles are very useful for monitoring cell trafficking in vivo and distinguish whether cellular regeneration originated from an exogenous cell source, which is a key issue for developing successful stem cell therapies. However, the impact of SPIO labeling on stem cell behavior remains uncertain. Here, we show the inhibitory effect of Ferucarbotran, an ionic SPIO, on osteogenic differentiation and its signaling mechanism in human mesenchymal stem cells. Ferucarbotran caused a dose-dependent inhibition of osteogenic differentiation, abolished the differentiation at high concentration, promoted cell migration, and activated the signaling molecules, beta-catenin, a cancer/testis antigen, SSX, and matrix metalloproteinase 2 (MMP2). An iron chelator, desferrioxamine, suppressed all the above Ferucarbotran-induced actions, demonstrating an important role of free iron in the inhibition of osteogenic differentiation that is mediated by the promotion of cell mobilization, involving the activation of a specific signaling pathway.
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Affiliation(s)
- Ying-Chun Chen
- Center for Nanomedicine Research, National Health Research Institutes, Zhunan, Miaoli County 350, Taiwan
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Zhang ZC, Lian B, Huang DM, Cui FJ. Compare activities on regulating lipid-metabolism and reducing oxidative stress of diabetic rats of Tremella aurantialba broth's extract (TBE) with its mycelia polysaccharides (TMP). J Food Sci 2009; 74:H15-21. [PMID: 19200097 DOI: 10.1111/j.1750-3841.2008.00989.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Abnormal lipid-metabolism and elevated oxidative stress are the familiar complications of diabetic mellitus. Regulated lipid-metabolism and decreased oxidative stress have become the key indices to cure diabetic complications. The activities of broth extract (TBE) and mycelia polysaccharides (TMP) of Tremella aurantialba, which is one of the best-known multipurpose medicinal fungi in China, were studied using alloxan-induced diabetic rats. TBE contains saponins, while TMP contains polysaccharides. Both TBE and TMP could reduce the blood glucose levels of diabetic rats; TBE had stronger abilities to reduce the levels of total cholesterol and total triglyceride in serum, those of malondialdehyde, and enhance the activities of superoxide dismutase and glutathione reductase in different tissues of diabetic rats (P < 0.01). TBE had slightly stronger abilities to enhance the total antioxidant capability, catalase, and glutathione peroxidase in different tissues of diabetic rats, but no significant difference was found between TBE and TMP groups. All these results indicated that TBE was more capable of regulating lipid-metabolism and decreasing oxidative stress.
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Affiliation(s)
- Z C Zhang
- Inst. of Geochemistry, Chinese Academy of Sciences, Guiyang, P.R. China
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Huang DM, Hsiao JK, Chen YC, Chien LY, Yao M, Chen YK, Ko BS, Hsu SC, Tai LA, Cheng HY, Wang SW, Yang CS, Chen YC. The promotion of human mesenchymal stem cell proliferation by superparamagnetic iron oxide nanoparticles. Biomaterials 2009; 30:3645-51. [PMID: 19359036 DOI: 10.1016/j.biomaterials.2009.03.032] [Citation(s) in RCA: 240] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Accepted: 03/18/2009] [Indexed: 01/10/2023]
Abstract
Superparamagnetic iron oxide (SPIO) nanoparticles are very useful in cell imaging; meanwhile, however, biosafety concerns associated with their use, especially on therapeutic stem cells, have arisen. Most studies of biosafety issues focus on whether the nanoparticles have deleterious effects. Here, we report that Ferucarbotran, an ionic SPIO, is not toxic to human mesenchymal stem cells (hMSCs) under the conditions of these experiments but instead increases cell growth. Ferucarbotran-promoted cell growth is due to its ability to diminish intracellular H2O2 through intrinsic peroxidase-like activity. Also, Ferucarbotran can accelerate cell cycle progression, which may be mediated by the free iron (Fe) released from lysosomal degradation and involves the alteration of Fe on the expression of the protein regulators of the cell cycle.
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Affiliation(s)
- Dong-Ming Huang
- Center for Nanomedicine Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli 350, Taiwan.
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Hsiao JK, Tsai CP, Chung TH, Hung Y, Yao M, Liu HM, Mou CY, Yang CS, Chen YC, Huang DM. Mesoporous silica nanoparticles as a delivery system of gadolinium for effective human stem cell tracking. Small 2008; 4:1445-1452. [PMID: 18680095 DOI: 10.1002/smll.200701316] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The progress of using gadolinium (Gd)-based nanoparticles in cellular tracking lags behind that of superparamagnetic iron oxide (SPIO) nanoparticles in magnetic resonance imaging (MRI). Here, dual functional Gd-fluorescein isothiocyanate mesoporous silica nanoparticles (Gd-Dye@MSN) that possess green fluorescence and paramagnetism are developed in order to evaluate their potential as effective T1-enhancing trackers for human mesenchymal stem cells (hMSCs). hMSCs are labeled efficiently with Gd-Dye@MSN via endocytosis. Labeled hMSCs are unaffected in their viability, proliferation, and differentiation capacities into adipocytes, osteocytes, and chondrocytes, which can still be readily MRI detected. Imaging, with a clinical 1.5-T MRI system and a low incubation dosage of Gd, low detection cell numbers, and short incubation times is demonstrated on both loaded cells and hMSC-injected mouse brains. This study shows that the advantages of biocompatibility, durability, high internalizing efficiency, and pore architecture make MSNs an ideal vector of T1-agent for stem-cell tracking with MRI.
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Affiliation(s)
- Jong-Kai Hsiao
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
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Liu HM, Wu SH, Lu CW, Yao M, Hsiao JK, Hung Y, Lin YS, Mou CY, Yang CS, Huang DM, Chen YC. Mesoporous silica nanoparticles improve magnetic labeling efficiency in human stem cells. Small 2008; 4:619-626. [PMID: 18491363 DOI: 10.1002/smll.200700493] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Tumblerlike magnetic/fluorescein isothiocyanate (FITC)-labeled mesoporous silica nanoparticles, Mag-Dye@MSNs, have been developed, which are composed of silica-coated core-shell superparamagnetic iron oxide (SPIO@SiO(2)) nanoparticles co-condensed with FITC-incorporated mesoporous silica. Mag-Dye@MSNs can label human mesenchymal stem cells (hMSCs) through endocytosis efficiently for magnetic resonance imaging (MRI) in vitro and in vivo, as manifested by using a clinical 1.5-T MRI system with requirements of simultaneous low incubation dosage of iron, low detection cell numbers, and short incubation time. Labeled hMSCs are unaffected in their viability, proliferation, and differentiation capacities into adipocytes and osteocytes, which can still be readily detected by MRI. Moreover, a higher MRI signal intensity decrease is observed in Mag-Dye@MSN-treated cells than in SPIO@SiO(2)-treated cells. This is the first report that MCM-41-type MSNs are advantageous to cellular uptake, as manifested by a higher labeling efficiency of Mag-Dye@MSNs than SPIO@SiO(2).
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Affiliation(s)
- Hon-Man Liu
- Department of Medical Imaging, National Taiwan University Hospital and College of Medicine National Taiwan University, Taipei, Taiwan
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Huang DM, Chung TH, Hung Y, Lu F, Wu SH, Mou CY, Yao M, Chen YC. Internalization of mesoporous silica nanoparticles induces transient but not sufficient osteogenic signals in human mesenchymal stem cells. Toxicol Appl Pharmacol 2008; 231:208-15. [PMID: 18519141 DOI: 10.1016/j.taap.2008.04.009] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2008] [Revised: 04/14/2008] [Accepted: 04/16/2008] [Indexed: 10/22/2022]
Abstract
The biocompatibility of nanoparticles is the prerequisite for their applications in biomedicine but can be misleading due to the absence of criteria for evaluating the safety and toxicity of those nanomaterials. Recent studies indicate that mesoporous silica nanoparticles (MSNs) can easily internalize into human mesenchymal stem cells (hMSCs) without apparent deleterious effects on cellular growth or differentiation, and hence are emerging as an ideal stem cell labeling agent. The objective of this study was to thoroughly investigate the effect of MSNs on osteogenesis induction and to examine their biocompatibility in hMSCs. Uptake of MSNs into hMSCs did not affect the cell viability, proliferation and regular osteogenic differentiation of the cells. However, the internalization of MSNs indeed induced actin polymerization and activated the small GTP-bound protein RhoA. The MSN-induced cellular protein responses as believed to cause osteogenesis of hMSCs did not result in promotion of regular osteogenic differentiation as analyzed by cytochemical stain and protein activity assay of alkaline phosphatase (ALP). When the effect of MSNs on ALP gene expression was further examined by reverse transcriptase polymerase chain reaction, MSN-treated hMSCs were shown to have significantly higher mRNA expression than control cells after 1-hour osteogenic induction. The induction of ALP gene expression by MSNs, however, was absent in cells after 1-day incubation with osteogenic differentiation. Together our results show that the internalization of MSNs had a significant effect on the transient protein response and osteogenic signal in hMSCs, thereby suggesting that the effects of nanoparticles on diverse aspects of cellular activities should be carefully evaluated even though the nanoparticles are generally considered as biocompatible at present.
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Affiliation(s)
- Dong-Ming Huang
- Center for Nanomedicine Research, National Health Research Institutes, Miaoli 350, Taiwan.
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Tsai CP, Hung Y, Chou YH, Huang DM, Hsiao JK, Chang C, Chen YC, Mou CY. High-contrast paramagnetic fluorescent mesoporous silica nanorods as a multifunctional cell-imaging probe. Small 2008; 4:186-191. [PMID: 18205156 DOI: 10.1002/smll.200700457] [Citation(s) in RCA: 145] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Affiliation(s)
- Chih-Pin Tsai
- Department of Chemistry, National Taiwan University, 1 Roosevelt Rd., Sec. 4, Taipei 106, Taiwan
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Chung TH, Wu SH, Yao M, Lu CW, Lin YS, Hung Y, Mou CY, Chen YC, Huang DM. The effect of surface charge on the uptake and biological function of mesoporous silica nanoparticles in 3T3-L1 cells and human mesenchymal stem cells. Biomaterials 2007; 28:2959-66. [PMID: 17397919 DOI: 10.1016/j.biomaterials.2007.03.006] [Citation(s) in RCA: 408] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Accepted: 03/08/2007] [Indexed: 11/17/2022]
Abstract
Cellular uptake of nanoparticles for stem cell labeling/tracking is considered as the most promising method. Recently mesoporous silica nanoparticles (MSNs) are emerging as an idea agent for efficient stem cell labeling. The objective of this study was to evaluate the effect of surface charge on the highly efficient cellular uptake and in vitro cytotoxicity of MSNs in human mesenchymal stem cells (hMSCs). The surface charge was varied by the degree of surface modification with N-trimethoxysilylpropyl-N,N,N-trimethylammonium chloride and the uptake of MSNs was detected by flow cytometry. 3T3-L1 cells were also used to compare the uptake behavior of MSNs between cell types. A clear correlation of positive surface charge and the number of fluorescence-labeled cells was mainly observed in 3T3-L1 cells. In both cells, uptake of unmodified MSNs was inhibited by phenylarsine oxide (PAO) and cytochalasin D (Cyt D) suggesting a clathrin- and an actin-dependent endocytosis were involved. With strongly positive-charged MSNs, the inhibitory effects were observed in 3T3-L1 cells but not in hMSCs. Without regard to the surface charge, uptake of MSNs into both cells did not affect their viability, proliferation, and differentiation. Our results show that MSNs uptake by hMSCs can be regulated by a threshold of positive surface charge but also imply that the modulation of surface charge on MSNs uptake is specific to cell type.
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Affiliation(s)
- Tsai-Hua Chung
- Stem Cell Research Center, National Health Research Institutes, Miaoli 350, Taiwan, ROC
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Lu CW, Hung Y, Hsiao JK, Yao M, Chung TH, Lin YS, Wu SH, Hsu SC, Liu HM, Mou CY, Yang CS, Huang DM, Chen YC. Bifunctional magnetic silica nanoparticles for highly efficient human stem cell labeling. Nano Lett 2007; 7:149-54. [PMID: 17212455 DOI: 10.1021/nl0624263] [Citation(s) in RCA: 263] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A superparamagnetic iron oxide (SPIO) nanoparticle is emerging as an ideal probe for noninvasive cell tracking. However, its low intracellular labeling efficiency has limited the potential usage and has evoked great interest in developing new labeling strategies. We have developed fluorescein isothiocyanate (FITC)-incorporated silica-coated core-shell SPIO nanoparticles, SPIO@SiO2(FITC), with diameters of 50 nm, as a bifunctionally magnetic vector that can efficiently label human mesenchymal stem cells (hMSCs), via clathrin- and actin-dependent endocytosis with subsequent intracellular localization in late endosomes/lysosomes. The uptake process displays a time- and dose-dependent behavior. In our system, SPIO@SiO2(FITC) nanoparticles induce sufficient cell MRI contrast at an incubation dosage as low as 0.5 microg of iron/mL of culture medium with 1.2x105 hMSCs, and the in vitro detection threshold of cell number is about 1x104 cells. Furthermore, 1.2x105 labeled cells can also be MRI-detected in a subcutaneous model in vivo. Labeled hMSCs are unaffected in their viability, proliferation, and differentiation capacities into adipocytes and osteocytes which can still be readily MRI detected. This is the first report that hMSCs can be efficiently labeled with MRI contrast nanoparticles and can be monitored in vitro and in vivo with a clinical 1.5-T MRI imager under low incubation concentration of iron oxide, short incubation time, and low detection cell numbers at the same time.
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Affiliation(s)
- Chen-Wen Lu
- Center for Nanomedicine Research and Stem Cell Research Center, National Health Research Institutes, Miaoli 350, Taiwan
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Chiang PC, Kung FL, Huang DM, Li TK, Fan JR, Pan SL, Shen YC, Guh JH. Induction of Fas clustering and apoptosis by coral prostanoid in human hormone-resistant prostate cancer cells. Eur J Pharmacol 2006; 542:22-30. [PMID: 16806159 DOI: 10.1016/j.ejphar.2006.05.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2005] [Revised: 04/27/2006] [Accepted: 05/19/2006] [Indexed: 10/24/2022]
Abstract
Cyclopentenone prostaglandins (PGs) such as PGA1, PGA2 and delta12-PGJ2 have been shown to suppress tumor cell growth and to induce apoptosis in prostate cancer cells. Bromovulone III, which is isolated from the soft coral Clavularia viridis, is a cyclopentenone prostanoid. In this study, the anti-tumor activity as well as action mechanism of bromovulone III was identified in prostate cancer cells. Bromovulone III displayed anti-tumor activity of 30 to 100 times more effective than PGA1, PGA2 and delta12-PGJ2 in PC-3 cells. Several targets of caspases and Bcl-2 family of proteins were detected and the data demonstrated that bromovulone III induced the activation of caspase-8, -9 and -3, and Bid cleavage in which the caspase-8 activation occurred the first. Bromovulone III did not modify the protein levels of death receptors and ligands. Of note, the Fas clustering in PC-3 cells responsive to bromovulone III was observed by confocal immunofluorescence microscopy suggesting the involvement of Fas-mediated pathway. Bromovulone III also induced the cleavage of Mcl-1 in this study. The cleavage fragments (24, 19 and 17 kDa) may partly share the apoptotic insult. Although it has been suggested that Fas-mediated signaling may contribute to the caspase-8 activation induced by DNA-damaging agents; however, bromovulone III did not induce any DNA breakage, suggesting that bromovulone III-induced Fas/caspase-8-dependent signaling is not through the direct target on DNA damage. In summary, the data suggest that bromovulone III causes a rapid redistribution and clustering of Fas in PC-3 cells. Subsequently, the Fas event causes the activation and interaction of caspase-8/Bid/caspase-9 signaling cascades, and the activation of executor caspase-3.
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Affiliation(s)
- Po-Cheng Chiang
- School of Pharmacy, College of Medicine, National Taiwan University, No. 1, Jen-Ai Road, Sect. 1, Taipei, Taiwan, ROC
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Huang YT, Huang DM, Chueh SC, Teng CM, Guh JH. Alisol B acetate, a triterpene from Alismatis rhizoma, induces Bax nuclear translocation and apoptosis in human hormone-resistant prostate cancer PC-3 cells. Cancer Lett 2006; 231:270-8. [PMID: 16399228 DOI: 10.1016/j.canlet.2005.02.011] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2005] [Revised: 02/05/2005] [Accepted: 02/07/2005] [Indexed: 12/22/2022]
Abstract
The anti-tumor potential of components from Chinese herbal medicines has been greatly concerned. Alisol B acetate, a triterpene from Alismatis rhizoma, induced apoptotic cell death in human hormone-resistant prostate cancer PC-3 cells in a time- and concentration-dependent manner. A good correlation between loss of mitochondrial membrane potential and apoptotic cell death was apparent indicating the participation of mitochondria-related mechanism. Alisol B acetate induced Bax up-regulation and nuclear translocation; it also induced the activation of initiator caspase-8 and caspase-9, and executor caspase-3, suggesting the involvement of both extrinsic and intrinsic apoptosis pathways. Taken together, it is suggested that alisol B acetate induces apoptosis in PC-3 cells via a mitochondria-mediated mechanism with activation of caspase-8, -9 and -3. Furthermore, the Bax activation and translocation from the cytosol to nucleus might be a crucial response to the apoptotic effect.
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Affiliation(s)
- Yao-Ting Huang
- Pharmacological Institute, College of Medicine, National Taiwan University, No. 1, Jen-Ai Road, Sect. 1, Taipei, Taiwan, ROC
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Huang DM, Hung Y, Ko BS, Hsu SC, Chen WH, Chien CL, Tsai CP, Kuo CT, Kang JC, Yang CS, Mou CY, Chen YC. Highly efficient cellular labeling of mesoporous nanoparticles in human mesenchymal stem cells: implication for stem cell tracking. FASEB J 2005; 19:2014-6. [PMID: 16230334 DOI: 10.1096/fj.05-4288fje] [Citation(s) in RCA: 192] [Impact Index Per Article: 10.1] [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: 01/14/2023]
Abstract
Tracking the distribution of stem cells is crucial to their therapeutic use. However, the usage of current vectors in cellular labeling is restricted by their low internalizing efficiency. Here, we reported a cellular labeling approach with a novel vector composed of mesoporous silica nanoparticles (MSNs) conjugated with fluorescein isothiocyanate in human bone marrow mesenchymal stem cells and 3T3-L1 cells, and the mechanism about fluorescein isothiocyanate-conjugated MSNs (FITC-MSNs) internalization was studied. FITC-MSNs were efficiently internalized into mesenchymal stem cells and 3T3-L1 cells even in short-term incubation. The process displayed a time- and concentration-dependent manner and was dependent on clathrin-mediated endocytosis. In addition, clathrin-dependent endocytosis seemed to play a decisive role on more internalization and longer stay of FITC-MSNs in mesenchymal stem cells than in 3T3-L1 cells. The internalization of FITC-MSNs did not affect the cell viability, proliferation, immunophenotype, and differentiation potential of mesenchymal stem cells, and 3T3-L1 cells. Finally, FITC-MSNs could escape from endolysosomal vesicles and were retained the architectonic integrity after internalization. We conclude that the advantages of biocompatibility, durability, and higher efficiency in internalization suit MSNs to be a better vector for stem cell tracking than others currently used.
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Affiliation(s)
- Dong-Ming Huang
- The Stem Cell Research Center, National Health Research Institutes, Miaoli, Taiwan
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Liu YN, Pan SL, Peng CY, Guh JH, Huang DM, Chang YL, Lin CH, Pai HC, Kuo SC, Lee FY, Teng CM. YC-1 [3-(5'-hydroxymethyl-2'-furyl)-1-benzyl indazole] inhibits neointima formation in balloon-injured rat carotid through suppression of expressions and activities of matrix metalloproteinases 2 and 9. J Pharmacol Exp Ther 2005; 316:35-41. [PMID: 16183705 DOI: 10.1124/jpet.105.090563] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [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] Open
Abstract
Matrix metalloproteinases (MMPs), particularly MMP-2 and MMP-9, and postrevascularization production of vascular smooth muscle cells may play key roles in development of arterial restenosis. We investigated the inhibitory effect of 3-(5'-hydroxymethyl-2'-furyl)-1-benzyl indazole (YC-1), a benzyl indazole compound, on MMP-2 and MMP-9 activity in a balloon-injury rat carotid artery model. Injury was induced by inserting a balloon catheter through the common carotid artery; after 14 days, histopathological analysis using immunostaining and Western blotting revealed significant restenosis with neointimal formation that was associated with enhanced protein expression of MMP-2 and MMP-9. However, these effects were dose-dependently reduced by orally administered YC-1 (1-10 mg/kg). In addition, gelatin zymography demonstrated that increased MMP-2 and MMP-9 activity was diminished by YC-1 treatment. On the other hand, YC-1 inhibited hydrolysis of the fluorogenic quenching substrate Mca-Pro-Leu-Gly-Leu-Dpa-Ala-Arg-NH(2) by recombinant MMP-2 and MMP-9 with IC(50) values = 2.07 and 8.20 muM, respectively. Reverse transcription-polymerase chain reaction analysis of MMP-2 and MMP-9 mRNA revealed that YC-1 significantly inhibited mRNA levels of MMPs. Finally, for the YC-1 treatment group, we did not observe elevation of cGMP levels using enzyme-linked immunosorbent assay, suggesting that YC-1 inhibition of neointimal formation is not through a cGMP-elevating pathway. These data show YC-1 suppression of neointimal formation is dependent on its influence on MMP-2 and MMP-9 protein, mRNA expression, and activity, but not through a cGMP-elevating effect. YC-1 shows therapeutic potential for treatment of restenosis after angioplasty.
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Affiliation(s)
- Yi-Nan Liu
- Pharmacological Institute, College of Medicine, National Taiwan University, 1 Jen-Ai Road, Sect. 1, Taipei, Taiwan
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Zhang WP, Yamauchi K, Mizuno S, Zhang R, Huang DM. Analysis of cost and assessment of computerized patient record systems in Japan based on questionnaire survey. ACTA ACUST UNITED AC 2005; 29:229-38. [PMID: 15742990 DOI: 10.1080/14639230400005990] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE The purpose of this study was to clarify the implementation and maintenance costs of a computerized patient record (CPR) system by means of a questionnaire survey. Moreover, the benefits of CPR systems were evaluated to determine their contribution to enhancing the quality of medical care and hospital management. METHODS Data were collected by a questionnaire survey mailed out to participants. RESULTS The per-bed mean cost for implementation was 14,308 dollars (range: 3538-38,077 dollars). The mean annual maintenance cost for the CPR system was 457,615 dollars (range: 39,769-2,307,692 dollars). The multivariate analysis (Hayashi's Quantification Type I) revealed high partial correlation coefficients between implementation cost and the CPR system maker. In addition, the multiple correlation coefficient for four factors (CPR system maker, number of servers, institution type and implementation date) in predicting implementation cost was 0.798. Over 60% of respondents replied that their satisfaction with the CPR system was 'very high' or 'high.' Eighty-two percent of the hospitals responded positively that CPR systems improve the quality of medical care, and 70% felt that the systems help prevent medical errors. CONCLUSIONS Our findings indicate that the maker of CPR system, number of servers, institution type and implementation date had a strong influence on per-bed implementation costs in that order. Finally, it was found that CPR systems were considered effective for hospital administration and medical examinations, based on the high assessments of the results of installing a CPR system.
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Affiliation(s)
- W P Zhang
- Department of Medical Information & Management Science, Graduate School of Medicine, Nagoya University, Tsurumai-cho 65, Showa-ku, Nagoya 466-8550, Japan.
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Huang DM, Guh JH, Huang YT, Chueh SC, Chiang PC, Teng CM. Induction of mitotic arrest and apoptosis in human prostate cancer pc-3 cells by evodiamine. J Urol 2005; 173:256-61. [PMID: 15592092 DOI: 10.1097/01.ju.0000141587.72429.e3] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE Although evodiamine, an alkaloid isolated from Evodiae fructus, has been reported to exert anticancer activities, to our knowledge its target and mechanism of action have not yet been explored. We examined the anticancer activities and action mechanism of evodiamine. MATERIALS AND METHODS Human prostate cancer PC-3 cells were used in this study. The cytotoxic effect and cell growth inhibition were examined using the MTT (3-(4,5-dimethylthiazol-2-yl)2,5-diphenyltetrazolium bromide) assay and sulforhodamine B assay, respectively. The apoptotic effect was determined using TUNEL assay and the progression of cells through the cell cycle and cell apoptosis were examined by FACScan flow cytometry (Becton Dickinson, Sunnyvale, California). In situ mitotic spindle detection and in vitro tubulin polymerization assay were performed by immunofluorescence staining for beta-tubulin and CytoDYNAMIX ScreenTM3 (CDS-03) kits (Cytoskeleton, Denver, Colorado). RESULTS It was found that treatment of PC-3 cells with evodiamine decreased the cell number in a concentration and time dependent manner, and effectively inhibited PC-3 cell growth via the induction of cell cycle arrest at the G2/M phase and subsequent apoptosis. In an in situ assay we found that evodiamine inhibited microtubule spindle formation. In a cell-free assay system of tubulin polymerization evodiamine inhibited the polymerization of microtubules in a concentration dependent manner. CONCLUSIONS These data suggest that evodiamine shows anticancer activity through inhibition of tubulin polymerization. This antitubulin activity might make evodiamine a potential anticancer drug.
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Affiliation(s)
- Dong-Ming Huang
- Department of Pharmacology, School of Pharmacy and Department of Urology, College of Medicine, National Taiwan University, No. 1 Jen-Ai Road, Taipei 100, Taiwan, Republic of China
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Huang YT, Huang DM, Guh JH, Chen IL, Tzeng CC, Teng CM. CIL-102 Interacts with Microtubule Polymerization and Causes Mitotic Arrest following Apoptosis in the Human Prostate Cancer PC-3 Cell Line. J Biol Chem 2005; 280:2771-9. [PMID: 15536083 DOI: 10.1074/jbc.m408850200] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [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: 11/06/2022] Open
Abstract
There have been no therapeutic agents that provide a survival advantage in hormone-refractory prostate cancer. Recently, the Food and Drug Administration approved docetaxel combined with prednisone for the treatment of patients with advanced metastatic prostate cancer, and it does show a survival benefit. Hence, anti-microtubule drugs might be of benefit in chemotherapy of hormone-refractory prostate cancer. We used metastatic hormone-refractory prostate cancer PC-3 cells to investigate potential molecular mechanisms for CIL-102, a semisynthetic alkaloid derivative. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenylte-trazolium bromide and sulforhodamine B assays indicated that CIL-102 inhibits cell growth dose-dependently. Immunofluorescence microscopy and in vitro tubulin assembly assays indicated that CIL-102 binds to tubulin and disrupts microtubule organization. Flow cytometry showed that CIL-102 causes cells to accumulate in G(2)/M phase and sub-G(0)/G(1) phase. CIL-102-induced apoptosis was also characterized by immunofluorescence microscopy. Western blotting and kinase assays showed that CIL-102 exposure induced up-regulation of cyclin B1 and p34(cdc2) kinase activity and olomoucine, a p34(cdc2) inhibitor, profoundly reduced the number of cells accumulated in mitotic phase. Moreover, Bcl-2 phosphorylation, Cdc25C phosphorylation, and survivin expression were increased. CIL-102-induced apoptosis was associated with activation of caspase-3, but a noncaspase pathway may also be involved, since benzyloxycarbonyl-VAD-fluoromethyl ketone, a pancaspase inhibitor, only partially inhibited the apoptosis, and apoptosis-inducing factor was translocated from mitochondria to cytosol. We conclude that CIL-102 induces mitotic arrest and apoptosis by binding to tubulin and inhibiting tubulin polymerization. CIL-102 causes mitotic arrest, at least partly, by modulating cyclin-dependent kinases and then apoptosis executed by caspase and noncaspase pathways.
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Affiliation(s)
- Yao-Ting Huang
- Pharmacological Institute and School of Pharmacy, College of Medicine, National Taiwan University, Taipei 100, Taiwan
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Wang SW, Pan SL, Guh JH, Chen HL, Huang DM, Chang YL, Kuo SC, Lee FY, Teng CM. YC-1 [3-(5'-Hydroxymethyl-2'-furyl)-1-benzyl Indazole] exhibits a novel antiproliferative effect and arrests the cell cycle in G0-G1 in human hepatocellular carcinoma cells. J Pharmacol Exp Ther 2004; 312:917-25. [PMID: 15525795 DOI: 10.1124/jpet.104.077230] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [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: 12/17/2022] Open
Abstract
This study delineates the antiproliferative activities and in vivo efficacy of YC-1 [3-(5'-hydroxymethyl-2'-furyl)-1-benzyl indazole] in human hepatocellular carcinoma cells. YC-1 inhibited the growth of HA22T and Hep3B cells in a concentration-dependent manner without significant cytotoxicity. YC-1 induced G(1) phase arrest in the cell cycle, as detected by an increase in the proportion of cells in the G(1) phase using FAC-Scan flow cytometric analysis. It was further shown that cGMP, p42/p44 mitogen-activated protein kinase, or AKT kinase-mediated signaling pathways did not contribute to the YC-1-induced effect. Of note, YC-1 induced a dramatic increase in the expression of cyclin-dependent kinase (CDK)-inhibitory protein, p21(CIP1/WAP1), and a modest increase in p27(KIP1). The association of p21(CIP1/WAP1) with CDK2 was markedly increased in cells responsive to YC-1. YC-1 did not modify the expression of cyclin D1, cyclin E, CDK2, or CDK4. In a corollary in vivo study, YC-1 induced dose-dependent inhibition of tumor growth in mice inoculated with HA22T cells. Immunohistochemical analysis revealed an inverse relationship between the staining of p21(CIP1/WAF) and the staining of Ki-67, a cell proliferation marker. Based on the results reported herein, we suggest that YC-1 induces cell cycle arrest and inhibits tumor growth both in vitro and in vivo via the up-regulation of p21(CIP1/WAP1) expression in HA22T cells. Because of this, YC-1 is a potential antitumor agent worthy of further investigation.
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Affiliation(s)
- Shih-Wei Wang
- Pharmacological Institutes, College of Medicine, National Taiwan University, 1 Jen-Ai Road, Sect. 1, Taipei, Taiwan
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Huang DM, Shen YC, Wu C, Huang YT, Kung FL, Teng CM, Guh JH. Investigation of extrinsic and intrinsic apoptosis pathways of new clerodane diterpenoids in human prostate cancer PC-3 cells. Eur J Pharmacol 2004; 503:17-24. [PMID: 15496290 DOI: 10.1016/j.ejphar.2004.09.040] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2004] [Revised: 09/07/2004] [Accepted: 09/10/2004] [Indexed: 11/19/2022]
Abstract
In our continuing search to discover bioactive compounds from natural products, we isolated six new clerodane diterpenes, caseamembrins A to F, from Casearia membranacea and examined their antiproliferative activities in human hormone-resistant prostate cancer PC-3 cells. All of these compounds displayed effective antiproliferative activity using sulforhodamine B assays and induced cell apoptosis by a terminal deoxynucleotidyl transferase (TdT) dUTP nick-end labeling (TUNEL)-reaction technique. The data demonstrated that caseamembrin C was the most effective compound among these clerodane diterpenoids. Caseamembrin C induced down-regulation of Bcl-2 and Bcl-xL expression, while up-regulation of proapoptotic protein Mcl-1S (short chain), suggesting that these Bcl-2 family member proteins may play a role on arbitrating the apoptotic cell death. Caseamembrin C also induced the up-regulation of Fas ligand (FasL) expression, cleavage and activation of caspase-8 and caspase-9, Bid cleavage and activation of executor caspase-3. However, z-IETD-FMK (Z-Ile-Glu-Thr-Asp-fluoromethyl ketone, a selective caspase-8 inhibitor) almost completely inhibited caseamembrin C-induced Bid cleavage without any modification of caspase-9 activation, indicating that the extrinsic pathway of FasL/caspase-8/Bid cascade only played a minor role in the apoptotic signaling. Taken together, it is suggested that caseamembrin C-induced apoptosis is predominantly through the activation of intrinsic apoptosis pathways by causing the down-regulation of Bcl-2 and Bcl-xL expression, up-regulation of Mcl-1S protein and activation of caspase-9 and caspase-3.
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Affiliation(s)
- Dong-Ming Huang
- Pharmacological Institute, College of Medicine, National Taiwan University, No. 1, Jen-Ai Road, Sect. 1, Taipei, Taiwan
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50
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Abstract
Fuzzy production rules (FPRs) have been used for years to capture and represent fuzzy, vague, imprecise and uncertain domain knowledge in many fuzzy systems. There have been a lot of researches on how to generate or obtain FPRs. There exist two methods to obtain FPRs. One is by painstakingly, repeatedly and time-consuming interviewing domain experts to extract the domain knowledge. The other is by using some machine learning techniques to generate and extract FPRs from some training samples. These extracted rules, however, are found to be nonoptimal and sometimes redundant. Furthermore, these generated rules suffer from the problem of low accuracy of classifying or recognizing unseen examples. The reasons for having these problems are 1) the FPRs generated are not powerful enough to represent the domain knowledge, 2) the techniques used to generate FPRs are pre-matured, ad-hoc or may not be suitable for the problem, and 3) further refinement of the extracted rules has not been done. In this paper we look into the solutions of the above problems by 1) enhancing the representation power of FPRs by including local and global weights, 2) developing a fuzzy neural network (FNN) with enhanced learning algorithm, and 3) using this FNN to refine the local and global weights of FPRs. By experimenting our method with some existing benchmark examples, the proposed method is found to have high accuracy in classifying unseen samples without increasing the number of the FPRs extracted and the time required to consult with domain experts is greatly reduced.
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Affiliation(s)
- Eric C C Tsang
- Department of Computing, The Hong Kong Polytechnic University, Kowloon, Hong Kong.
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