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Chen ZZ, Ding ZJ, Wang ZF, Xu SZ, Zhang SF, Yuan SS, Yan F, Liu GY, Qiu XF, Cai JC. [Comparison between laparoscopic-assisted natural orifice specimen extraction surgery and conventional laparoscopic surgery for left colorectal cancer: 5-year follow-up results of a randomized controlled study]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:768-772. [PMID: 37574293 DOI: 10.3760/cma.j.cn441530-20230406-00103] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Objective: To evaluate the long-term efficacy of laparoscopic-assisted natural orifice specimen extraction surgery (NOSES) colectomy using Cai tube for treating left-sided colorectal cancer. Methods: This was a randomized controlled trial. Inclusion criteria were as follows: preoperative pathological diagnosis of left-sided colorectal adenocarcinoma (rectal, sigmoid colon, descending colon, or left transverse colon cancer with the caudad margin ≥8 cm from the anal margin); preoperative abdominal and pelvic computed tomography (or magnetic resonance imaging) showing maximum tumor diameter <4.5 cm; and BMI <30 kg/m2. Patients with synchronous multiple primary cancers or recurrent cancers, a history of neoadjuvant chemoradiotherapy, preoperative evidence of significant local infiltration, distant metastasis, or complications such as intestinal obstruction and intestinal perforation, or who were not otherwise considered suitable for laparoscopic surgery were excluded. A random number table was used to randomize sequential patients to NOSES surgery using Cai tube (non-assisted incision anal sleeve: patent number ZL201410168748.2) (NOSES group) or traditional laparoscopic-assisted surgery (CLS group). Relevant clinical data of the two groups of patients were analyzed, the main outcomes being disease-free survival, overall survival, overall recurrence rate, and local recurrence rate 5 years after surgery. Results: Patients in both study groups completed the surgery successfully with no requirement for additional surgery. After mean 70 (7-83) months postoperative follow-up, the 5-year overall postoperative survival in the NOSES and CLS groups was 90.0% and 83.3%, respectively (P=0.455); disease free survival was 90.0% and 83.3%, respectively (P=0.455); overall recurrence rate 6.6% and 10.0%, respectively (P=0.625); and local recurrence rate both were 3.3% (P=0.990), respectively. None of these differences was statistically significant. Conclusions: NOSES and CLS have similar long-term efficacy, and NOSES deserves to be used in clinical practice.
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Affiliation(s)
- Z Z Chen
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - Z J Ding
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - Z F Wang
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - S Z Xu
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - S F Zhang
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - S S Yuan
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - F Yan
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - G Y Liu
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - X F Qiu
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
| | - J C Cai
- Department of Gastrointestinal Surgery, Zhongshan Hospital, Xiamen University; Institute of Gastrointestinal Oncology, Medical College of Xiamen University; Xiamen Municipal Key Laboratory of Gastrointestinal Oncology, Xiamen 361004, China
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Koya T, Yoshida K, Togi M, Niida Y, Togi S, Ura H, Mizuta S, Kato T, Yamada S, Shibata T, Liu YC, Yuan SS, Wu DC, Kobayashi H, Utsugisawa T, Kanno H, Shimodaira S. Clinical Trial on the Safety and Tolerability of Personalized Cancer Vaccines Using Human Platelet Lysate-Induced Antigen-Presenting Cells. Cancers (Basel) 2023; 15:3627. [PMID: 37509288 PMCID: PMC10377585 DOI: 10.3390/cancers15143627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/27/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Research and development of personalized cancer vaccines as precision medicine are ongoing. We predicted human leukocyte antigen (HLA)-compatible cancer antigen candidate peptides based on patient-specific cancer genomic profiles and performed a Phase I clinical trial for the safety and tolerability of cancer vaccines with human platelet lysate-induced antigen-presenting cells (HPL-APCs) from peripheral monocytes. Among the five enrolled patients, two patients completed six doses per course (2-3 × 107 cells per dose), and an interim analysis was performed based on the immune response. An immune response was detected by enzyme-linked immunosorbent spot (ELISpot) assays to HLA-A*33:03-matched KRASWT, HLA-DRB1*09:01-compliant KRASWT or G12D, or HLA-A*31:01-matched SMAD4WT, and HLA-DRB1*04:01-matched SMAD4G365D peptides in two completed cases, respectively. Moreover, SMAD4WT-specific CD8+ effector memory T cells were amplified. However, an attenuation of the acquired immune response was observed 6 months after one course of cancer vaccination as the disease progressed. This study confirmed the safety and tolerability of HPL-APCs in advanced and recurrent cancers refractory to standard therapy and is the first clinical report to demonstrate the immunoinducibility of personalized cancer vaccines using HPL-APCs. Phase II clinical trials to determine immune responses with optimized adjuvant drugs and continued administration are expected to demonstrate efficacy.
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Affiliation(s)
- Terutsugu Koya
- Department of Regenerative Medicine, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
- Center for Regenerative Medicine, Kanazawa Medical University Hospital, Kahoku 920-0293, Ishikawa, Japan
| | - Kenichi Yoshida
- Center for Regenerative Medicine, Kanazawa Medical University Hospital, Kahoku 920-0293, Ishikawa, Japan
| | - Misa Togi
- Department of Regenerative Medicine, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
- Center for Regenerative Medicine, Kanazawa Medical University Hospital, Kahoku 920-0293, Ishikawa, Japan
| | - Yo Niida
- Division of Genomic Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Sumihito Togi
- Division of Genomic Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Hiroki Ura
- Division of Genomic Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Shuichi Mizuta
- Department of Hematology and Immunology, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Tomohisa Kato
- Division of Stem Cell Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Sohsuke Yamada
- Department of Pathology and Laboratory Medicine, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Takeo Shibata
- Department of Obstetrics and Gynecology, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Yi-Chang Liu
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shyng-Shiou Yuan
- Office of Research & Development, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Deng-Chyang Wu
- Internal Medicine, School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hirohito Kobayashi
- Division of Transfusion and Cell Therapy, Tokyo Women's Medical University, Adachi Medical Center, Adachi 123-8558, Tokyo, Japan
| | - Taiju Utsugisawa
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Shinjuku 162-8666, Tokyo, Japan
| | - Hitoshi Kanno
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Shinjuku 162-8666, Tokyo, Japan
| | - Shigetaka Shimodaira
- Department of Regenerative Medicine, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
- Center for Regenerative Medicine, Kanazawa Medical University Hospital, Kahoku 920-0293, Ishikawa, Japan
- Division of Stem Cell Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Shinjuku 162-8666, Tokyo, Japan
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Liao PH, Chuang FH, Wang YY, Wang WC, Su CW, Hsu CW, Yuan SS, Chen YK. Sprouty 4 expression in human oral squamous cell carcinogenesis. J Dent Sci 2023; 18:781-790. [PMID: 37021228 PMCID: PMC10068491 DOI: 10.1016/j.jds.2023.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 01/20/2023] [Indexed: 02/05/2023] Open
Abstract
Background/purpose Reviewing literature, sprouty 4 (SPRY4) has not been studied in human oral squamous cell carcinomas (OSCCs). The study aimed to examine SPRY4 expression in human oral squamous cell carcinogenesis. Materials and methods A total of 95 OSCCs, 10 OPMDs with malignant transformation (MT), 17 OPMDs without MT, and six normal oral mucosa (NOM) samples were recruited for immunohistochemical staining; three OSCC tissues with normal tissue counterpart NOM were employed for Western blotting. Three human oral cancer cell lines (OCCLs), an oral precancer cell line (dysplastic oral keratinocyte, DOK), and a primary culture of normal oral keratinocytes (HOK) were used for Western blotting; OCCLs and HOK were employed for real-time quantitative reverse transcription-polymerase chain reaction. OCCLs were evaluated in terms of proliferation, migration, and invasion assays. Results SPRY4 protein expression was significantly increased in OSCCs compared with NOM. Protein and mRNA SPRY4 expression in OCCLs were significantly elevated compared with HOK. Significant increases in the degrees of proliferation, migration, and invasion were noted in OCCLs with SPRY4 siRNA transfection compared with those without transfection. SPRY4 protein level was increased in OPMD with MT compared to OPMD without MT. SPRY4 protein was significant increase in DOK in comparison with HOK. SPRY4 protein expression was significantly increased from NOM and OPMD without MT to OSCC. SPRY4 protein expression in OCCLs was significantly enhanced compared with DOK and HOK respectively. Conclusion Our results indicate that SPRY4 expression is possibly involved in human oral squamous cell carcinogenesis.
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Wang YY, Wang WC, Su CW, Hsu CW, Yuan SS, Chen YK. Overexpression of transient receptor potential melastatin 6 during human oral squamous cell carcinogenesis. J Dent Sci 2023; 18:382-391. [PMID: 36643266 PMCID: PMC9831831 DOI: 10.1016/j.jds.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 10/30/2022] [Indexed: 11/16/2022] Open
Abstract
Background/purpose Transient receptor potential melastatin (TRPM) channel is involved in cell proliferation and cell survival. Eight members (TRPM1-8) are within the TRPM subfamily. The current study is aimed to investigate TRPM6 expression in human oral carcinogenesis. Materials and methods Sixty-six oral squamous cell carcinomas (OSCCs), 47 oral potentially malignant disorders (OPMD) with moderate-severe epithelial dysplasia (ED), 28 OPMD with mild ED, and 33 normal oral mucosa (NOM) samples were subjected to immunohistochemical staining. Two human oral cancer cell lines (OCCLs), an oral premalignant cell line (DOK), and a normal oral keratinocyte culture (HOK) were used for Western blot analysis. OCCLs were evaluated for proliferation, migration, invasion assays, and intracellular calcium concentration. Results TRPM6 protein expression in OSCC was significantly increased as compared with normal samples. Protein expression of TRPM6 in OCCLs was significantly higher as compared with HOK. Significant decreases in degrees of proliferation, migration, invasion, and intracellular calcium concentration were noted in OCCLs with TRPM6 siRNA transfection as compared with those without transfection. Significantly increased TRPM6 protein level was noted in OPMD with moderate-severe ED as compared with those with mild ED. Conclusion Our results implicate that TRPM6 overexpression is potentially related to human oral carcinogenesis.
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Affiliation(s)
- Yen-Yun Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Chen Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan,Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan,Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chiang-Wei Su
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ching-Wei Hsu
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Shyng-Shiou Yuan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan,Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan,Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan,Corresponding author. Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan.
| | - Yuk-Kwan Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan,Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan,Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan,Corresponding author. School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan.
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Chen ZZ, Xu SZ, Ding ZJ, Zhang SF, Yuan SS, Yan F, Wang ZF, Liu GY, Qiu XF, Cai JC. [Comparison between laparoscopic-assisted natural orifice specimen extraction surgery and conventional laparoscopic surgery for left colorectal cancer: a randomized controlled study with 3-year follow-up results]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:604-611. [PMID: 35844123 DOI: 10.3760/cma.j.cn441530-20220129-00040] [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: 06/15/2023]
Abstract
Objective: To evaluate the mid-term efficacy of laparoscopic-assisted natural orifice specimen extraction surgery (NOSES) colectomy using the Cai tube in the treatment of left colorectal cancer. Methods: A prospective randomized control trial (China Clinical Trials Registration Number: ChiCTR-OOR-15007060) was performed. Sixty patients with left colorectal cancer at Department of Gastrointestinal Surgery of Zhongshan Hospital from September 2015 to August 2017 were prospectively enrolled. Case inclusion criteria: (1) left colorectal adenocarcinoma (rectal cancer with distance ≥ 8 cm from tumor low margin to anal edge, sigmoid colon cancer, descending colon cancer and left transverse colon cancer) confirmed by preoperative pathology; (2) satisfactory conditions of conventional laparoscopic surgery; (3) maximum diameter of the tumor < 4.5 cm confirmed by preoperative abdominal and pelvic CT or MRI; (4) BMI < 30 kg/m2. Case exclusion criteria: (1) benign lesions, mucinous adenocarcinoma, signet-ring cell carcinoma and other special pathological types of tumors confirmed by preoperative pathological examination; (2) multiple or recurrent cancers; (3) with a history of neoadjuvant chemoradiotherapy; (4) obvious regional infiltration or distant metastasis indicated by preoperative imaging examination; (5) intestinal obstruction, intestinal perforation, etc. Participants were randomly assigned to NOSES group (using the Cai tube) and conventional laparoscopy (CL) group by random number table method. Clinical data between two groups were compared and analyzed, including perioperative conditions, tumor exfoliation cell detection and bacterial culture results of intraperitoneal lavage fluid, postoperative complications (Clavien-Dindo grading), postoperative pain [visual simulation scoring (VAS) assessment], anal function (Kirwan anal function grading assessment), and postoperative 3-year disease-free survival (DFS), overall survival (OS), overall recurrence rate, and local recurrence rate. Results: A total of 60 patients were enrolled, with 30 in the NOSES group and 30 in the CL group. All the patients in the NOSES group successfully completed operation with Cai tube. Baseline data between the two groups were not significantly different (all P>0.05). There were no statistically significant differences between two groups in conversion rate to open surgery, number of lymph node harivested, proximal and distal resection margin of tumor, negative rate of circumferential margin, operation time, blood loss, inflammatory indexes, postoperative anal function, postoperative hospital stay, hospitalization cost, morbidity of postoperative complications (Clavien-Dindo grade II or above) (all P>0.05). Compared to the CL group, the NOSES group had lower maximum postoperative VAS score (2.5±0.3 vs. 5.1±0.4, t=3.187, P<0.01), and fewer use of additional postoperative analgesia [6.7% (2/30) vs. 33.3% (10/30),χ2=6.670, P=0.02]. The postoperative time to gas passage was shorter in the NOSES group [(2.2±1.4) days vs. (3.1±1.2) days,P=0.026]. No tumor cells and bacterial contamination were found in abdominal lavage fluid before and after operation in either group. The anal function at postoperative 3-month of all the patients in the NOSES group was Kirwan grade I to II, while in the CL group, anal function of 2 cases (6.7%) was Kirwan grade III, and of 28 cases was also Kirwan grade I to II, whose difference was not statistically significant (P>0.05). In the NOSES group and the CL group, 3-year DFS was 96.7% and 83.3% (P=0.090), OS was 100% and 90% (P=0.096), overall recurrence rate was 3.3% and 10.0% (P=0.166), and local recurrence rate was 3.3% and 3.3% (P=0.999), respectively, whose differences were not statistically significant (all P>0.05). Conclusions: In the treatment of left colorectal cancer, compared with conventional laparoscopic colectomy, NOSES colectomy using Cai tube exhibits less scar, less postoperative pain, shorter recovery of gastrointestinal function, and similar mid-term outcomes. Given proper surgical indications, the surgical procedure is safe and feasible.
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Affiliation(s)
- Z Z Chen
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - S Z Xu
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - Z J Ding
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - S F Zhang
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - S S Yuan
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - F Yan
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - Z F Wang
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - G Y Liu
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - X F Qiu
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
| | - J C Cai
- Department of Gastrointestinal Surgery, Gastrointestinal Tumor Institute of Xiamen University School of Medicine, Xiamen Key Laboratory of Gastrointestinal Tumor, Zhongshan Hospital, Xiamen University, Fujian Xiamen 361004, China
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Wang YY, Wang WC, Su CW, Hsu CW, Yuan SS, Chen YK. Expression of Orai1 and STIM1 in human oral squamous cell carcinogenesis. J Dent Sci 2022; 17:78-88. [PMID: 35028023 PMCID: PMC8739746 DOI: 10.1016/j.jds.2021.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/07/2021] [Indexed: 12/21/2022] Open
Abstract
Background/purpose Return of Ca2+ to endoplasmic reticulum is mediated by Orai/STIM-mediated store-operated Ca2+ entry (SOCE) channel. We aimed to investigate Orai1 and STIM1 expressions in human oral carcinogenesis. Materials and methods Sixty-six oral squamous cell carcinomas (OSCCs), 14 oral potentially malignant disorders (OPMD) with moderate-severe oral epithelial dysplasia (OED), 19 OPMD with mild OED, and 14 normal oral mucosa (NOM) samples were subjected to immunohistochemical staining. Two human oral cancer cell lines (OCCLs), an oral premalignant cell line (DOK), and a normal oral keratinocyte culture (HOK) were used for Western blot and real-time quantitative reverse transcription-polymerase chain reaction. OCCLs were evaluated for proliferation, migration, and invasion assays. Results Orai1 and STIM1 protein and mRNA expressions in OSCC were significantly enhanced as compared with normal samples. Protein expressions of Orai1 and STIM1 in OCCLs were significantly enhanced as compared with HOK. Significant decreases in degrees of proliferation, migration and invasion were noted in OCCLs with Orai1 and STIM1 siRNA transfection as compared with those without transfection. Significantly increased Orai1 and STIM1 protein levels were noted in OPMD with moderate-severe OED as compared with those with mild OED. Conclusion Our results indicate that Orai1 and STIM1 overexpression is associated with human oral carcinogenesis.
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Affiliation(s)
- Yen-Yun Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Chen Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chiang-Wei Su
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ching-Wei Hsu
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Shyng-Shiou Yuan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Obstetrics and Gynecology and Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yuk-Kwan Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan
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Liang MX, Yuan SS, Shao ZJ, Tian F, Zhang ZW, Han K, Lyu XZ. [Systematic review on the reform of disease prevention and control system in China]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1332-1338. [PMID: 34749478 DOI: 10.3760/cma.j.cn112150-20210823-00818] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To systematically understand the reform progress of disease prevention and control system in China. Methods: The literature regarding the reform of China's disease prevention and control system was searched by using the keywords including disease prevention and control, center for disease prevention and control (CDC), disease control, reform, and system from 2003 to 2020 in China CNKI, Wanfang Data knowledge service platform, VIP information and China biomedical literature database. The language is limited to Chinese. A total of 25 studies were included to analyze the information about the organizational structure, functional orientation, financing mechanism and personnel system of China's disease prevention and control system. Results: The 25 studies described the specific changes and reform suggestions of China's disease prevention and control system, including key policies (7 studies), organizational structure transformation (4 studies), institutional function transformation (7 studies), financing mechanism transformation (5 studies), personnel system reform (2 studies), and performance-based salary system reform (4 studies). Meanwhile, the reform suggestions were concluded at the top-level design system reform (two aspects), organization structure (three aspects), functioning (four aspects), and personnel guarantee mechanism (three aspects). Conclusions: This study indicates that there is a lack of empirical evidence regarding specific reform effects and content analysis at the micro level of disease prevention and control system in China. Future study should strengthen the rigorousness of study design and focus on the quantitative impacts of reform implementation in China.
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Affiliation(s)
- M X Liang
- Editorial Department for National Medical Journal of China, Chinese Medical Journals Publishing House, Key Laboratory of Knowledge Mining and Service for Medical Journals, Beijing 100053, China
| | - S S Yuan
- Institute of Medical Information & Library, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100020, China
| | - Z J Shao
- School of Public Health, China Medical University, Shenyang 110121, China
| | - F Tian
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Z W Zhang
- Editorial Department for Chinese Journal of Preventive Medicine, Chinese Medical Journals Publishing House, Key Laboratory of Knowledge Mining and Service for Medical Journals, Beijing 100053, China
| | - K Han
- Editorial Department for Chinese Journal of Preventive Medicine, Chinese Medical Journals Publishing House, Key Laboratory of Knowledge Mining and Service for Medical Journals, Beijing 100053, China
| | - X Z Lyu
- Editorial Department for National Medical Journal of China, Chinese Medical Journals Publishing House, Key Laboratory of Knowledge Mining and Service for Medical Journals, Beijing 100053, China
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Tan RW, Liu X, Chen YY, Xu MQ, Guo YJ, Wang DY, Liang JM, Liu J, Yuan SS, Fan W, Wang XK, She ZD. [Experimental study on the effect of three-dimensional porous structures on the vascularization rate of artificial dermis]. Zhonghua Shao Shang Za Zhi 2021; 37:959-969. [PMID: 34689466 DOI: 10.3760/cma.j.cn501120-20200715-00347] [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: 11/05/2022]
Abstract
Objective: To explore the effects of orienting three-dimensional porous network (type A) and honeycomb briquette-shaped vertically penetrating three-dimensional porous network (type B) on the vascularization rate of artificial dermis. Methods: The experimental research method was used. The artificial dermis was composed of a double layer of silicone layer and scaffold layer. Based on the difference of scaffold layer, they were divided into type A and type B artificial dermis (type A dermis and type B dermis, for short) containing type A and type B structure, respectively. The type A and type B structures were prepared by gradient freeze-drying technique and physical pore-making technique, respectively. The micro-morphology of two kinds of dermis scaffold was observed by scanning electron microscopy. The porosity of two kinds of dermis scaffold was measured by the Pyrex method. According to the method of national medical industry standard, the hydroxyproline content in degradation liquids and their residues in two kind of dermis were determined after degradation at 4, 8, 13, and 24 h, reflecting the degradation rates of two kinds of dermis. According to the random number table, L929 cells were divided into type A dermis group, type B dermis group, negative control group, and positive control group. The positive control group was added with minimum essential medium (MEM) containing 5% dimethyl sulfoxide, The negative control group was added with high-density polyethylene extract, and the other two groups were added with the corresponding extract. At 24 hours after culture, the growth rate of L929 cells was detected by methyl thiazolyl tetrazolium, and the cytotoxicity was graded. L929 cells and human umbilical vein endothelial cells (HUVECs) were inoculated into pore plates with two kinds of dermis preinstalled. On 1, 4, 7, and 14 d after inoculating, the adhesion and growth of L929 cells on the surfaces of the two kinds of scaffolds were detected by immunofluorescence method. On 7 d after inoculating, the migration of the above two kinds of cells into the two kinds of dermal scaffolds was detected by immunofluorescence and hematoxylin-eosin (HE) staining. Three full-thickness skin defect wounds of 5.0 cm×5.0 cm were created on both sides of the back of three 6-month-old healthy male Ba-Ma mini pigs. According to the random number table, six columns of wounds were divided into type A dermis two-step method group, type B dermis two-step method group, and type B dermis one-step method group. The wounds in type A dermis two-step method group and type B dermis two-step method group were transplanted with type A or type B dermis respectively before, and with autologous split-thickness skin grafting later. The wounds in type B dermis one-step method group were transplanted in a synchronous procedure including type B dermis (without silicone layer) and autologous skin grafting simultaneously. The bleeding, exudation, and infection of the wounds on the back in type A dermis two-step method group and type B dermis two-step method group on the 7th day after the second transplantation and in type B dermis one-step method group on the 14th day after the first transplantation were generally observed. The area of autologous skin graft was measured by the transparent film grid method, and the survival rate of autologous skin was calculated. On 4, 7, and 14 d after the first transplantation, the inflammatory cells, fibroblasts (Fbs), and capillary infiltration into the scaffolds of the three groups were detected by HE staining. On 7, 14 d after the first transplantation, the vascularization of the scaffolds was further observed by immunohistochemistry. On 28, 90 d after the first operation, the degradation of the scaffolds of type A dermis and type B dermis was observed by HE staining. Data were statistically analyzed with one-way analysis of variance, independent sample t test, and Bonferroni correction. Results: A large number of round and oval micropores were evenly distributed on the surface of type A scaffold, and the cylindrical hole walls could be observed arranging in a parallel direction in the longitudinal section. The honeycomb briquette-shaped penetrating macropores on the surface of type B scaffold were arranged in an orderly matrix. The pore walls of the honeycomb briquette-shaped penetrating macropores were connected by micropores to form a network structure. The porosity of type A dermis was (93.21±0.72)%, which was similar to (95.88±1.00)% of type B dermis (t=4.653, P>0.05). The degradation rates of type A dermis at 4, 8, 13, and 24 h were similar to those of type B dermis at the corresponding time point (t=0.232, 0.856, 0.258, 7.716, P>0.05). At 24 h after culture, the proliferation rates of L929 cells in the type A dermis group, type B dermis group, and negative control group were significantly higher than those of the positive control group (t=2 393.46, 2 538.27, 1 077.77, P<0.01). The cytotoxicity rating of cells in positive control group was grade 4, while that of the other three groups was grade zero. On 1, 4, 7, and 14 d after inoculation, both L929 cells and HUVECs proliferated in a time-dependent manner in two kinds of dermal scaffolds. The adhesion growth and proliferation rate of the two kinds of cells on the surface of type B dermis was higher than that of type A dermis. On 7 d after inoculation, both L929 cells and HUVECs covered the surface of type B dermis and migrated into one side of the silicone layer. However, the above two kinds of cells migrated slowly into type A dermis, and only a few cells were found on one side of the silicone layer. There was no bleeding, exudation, or infection in the wounds repaired by type A and type B dermis. The survival rate of autologous skin grafting of 6 wounds in each group was 100%. On 4, 7, and 14 d after the first operation, inflammatory cells, Fbs, and capillaries gradually infiltrated into the scaffold layer, and the cell infiltration rate from high to low was type B dermis one-step method group, type B dermis two-step method group, and type A dermis two-step method group. The scaffold in wound in the type B dermis one-step method group gradually collapsed on 28 d after the first operation, and completely degraded in 3 months after the first operation. The scaffold degradation rate of type A dermis two-step method group was similar to that mentioned above. Conclusions: The honeycomb briquette-shaped vertically penetrating three-dimensional porous network structure of type B scaffold can accelerate its vascularization process, which is beneficial to autogenous split-thickness skin in one-step procedure to repair full-thickness skin defects wound in Ba-Ma mini pigs. Compared with the "two-step method" of staged transplantation of type A scaffold and autologous split-thickness skin, and one-step transplantation has equal efficacy and can provide a better choice for wound treatment.
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Affiliation(s)
- R W Tan
- Shenzhen Lando Biomaterials Co., Ltd., Shenzhen Engineering Research Center of Implantable Medical Polymer, Guangdong Engineering Research Center of Implantable Medical Polymer, Shenzhen 518107, China
| | - X Liu
- Shenzhen Tsing Care Medical Co., Ltd., Shenzhen 518107, China
| | - Y Y Chen
- Shenzhen Tsing Care Medical Co., Ltd., Shenzhen 518107, China
| | - M Q Xu
- Shenzhen Tsing Care Medical Co., Ltd., Shenzhen 518107, China
| | - Y J Guo
- Shenzhen Tsing Care Medical Co., Ltd., Shenzhen 518107, China
| | - D Y Wang
- Shenzhen Lando Biomaterials Co., Ltd., Shenzhen Engineering Research Center of Implantable Medical Polymer, Guangdong Engineering Research Center of Implantable Medical Polymer, Shenzhen 518107, China
| | - J M Liang
- Shenzhen Tsing Care Medical Co., Ltd., Shenzhen 518107, China
| | - J Liu
- Shenzhen Lando Biomaterials Co., Ltd., Shenzhen Engineering Research Center of Implantable Medical Polymer, Guangdong Engineering Research Center of Implantable Medical Polymer, Shenzhen 518107, China
| | - S S Yuan
- Department of Burns, the Fifth Hospital of Baoding City, Baoding 071027, China
| | - W Fan
- Department of Burns, the Fifth Hospital of Baoding City, Baoding 071027, China
| | - X K Wang
- Department of Burns, the Fifth Hospital of Baoding City, Baoding 071027, China
| | - Z D She
- Shenzhen Lando Biomaterials Co., Ltd., Shenzhen Engineering Research Center of Implantable Medical Polymer, Guangdong Engineering Research Center of Implantable Medical Polymer, Shenzhen 518107, China
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Zhao MJ, Mao AY, Yuan SS, Wang K, Dong P, Du S, Meng YL, Qiu WQ. [Research progress on building of disease control and prevention system of the international experience]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1263-1269. [PMID: 34706515 DOI: 10.3760/cma.j.cn112150-20201117-01379] [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: 11/05/2022]
Abstract
Through literature search in regular database and official websites of relevant countries, this paper combs and summarizes the main characteristics of disease prevention and control systems in five countries, the United States, Germany, South Korea, Australia and Japan, and the European Union at key levels including legal construction, organizational structure, financing, personnel construction and international cooperation, in order to provide decision support for the construction of disease prevention and control system in China in the future.
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Affiliation(s)
- M J Zhao
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - A Y Mao
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - S S Yuan
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - K Wang
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - P Dong
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - S Du
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - Y L Meng
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - W Q Qiu
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
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Yuan SS, Wang F, Qiu WQ. [Policy analysis of disease control and prevention system in China from the perspective of policy instruments from 2000 to 2020]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1181-1185. [PMID: 34706501 DOI: 10.3760/cma.j.cn112150-20201116-01371] [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: 06/13/2023]
Abstract
Objective: To analyze the related polities about disease control and prevention system in China from 2000 to 2020, and to provide implication for the policy formulation of disease control and prevention system in the future. Methods: Policy documents were searched in the official websites of relevant government departments including the State Council, National Health Commission, National Development and Reform Commission, Ministry of Human Resources and Social Security, and Ministry of Finance by using the keywords related to disease control and prevention from 2000 to 2020. Thematic framework and content analysis were performed to analyze the eligible policy documents based on the theory of policy instruments. Results: A total of 37 policy documents were included in this study. The application of single policy instrument was common (81.1%), of which the capacity building instrument was the most frequently used (32.4%), followed by mandate instrument (21.6%) and inducement instrument (13.5%), while system-changing instrument (8.1%) and symbolic and hortatory instrument were less used (5.4%). The main policy themes were personnel system (15.2%) and system construction (15.2%), followed by personnel development (13.0%) and information construction (2.2%). Conclusion: In the policy formulation process, the government should strengthen the comprehensive application of multiple policy instruments. Particularly about the inducement instrument and symbolic and hortatory instrument to further stimulate the internal motivation of disease control and prevention system and institutions in China.
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Affiliation(s)
- S S Yuan
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - F Wang
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - W Q Qiu
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
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11
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Yuan SS, Qiu WQ, Wang F, Zhao J. [Changes of the number of disease control and prevention staffs at provincial level in China from 2002 to 2018: an interrupted time series analysis]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1192-1195. [PMID: 34706503 DOI: 10.3760/cma.j.cn112150-20201116-01373] [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: 06/13/2023]
Abstract
Objective: To analyze the change of the number of staff at the provincial center for disease control and prevention (CDC) in China before and after the new health care reform. Methods: The data was from publicly reported health statistics yearbooks from 2002 to 2018. Descriptive analysis and interrupted time series analysis (ITS) were conducted in Stata/SE 15. Results: The decreasing trend of total number and average number of CDC staff per ten thousand people further exacerbated in the eastern and central areas after the new health care reform, while the total number of CDC staff in the western area changed from a decreasing trend to an increasing tend and the decreasing trend of average number of CDC staff per ten thousand people slowed down. After controlling the provincial and time fixed effects, the ITS analysis showed that before the reform, the number of CDC staff in central area showed a decreasing trend (P=0.012). After the reform, no statistically significant changes were observed in the number of CDC staff in the eastern, central and western areas increased instantaneously (P>0.05), and the decreasing trend (slope) of the number of CDC staff in the eastern and central areas further increased. The number of CDC staff in the western area changed to an increasing trend (P>0.05). Conclusion: After the new health care reform, the total number and average number of CDC staff at the provincial level have not improved, therefore targeted reform strategies are needed to reverse the continuous reduction of CDC staff and reflect regional differences in the future.
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Affiliation(s)
- S S Yuan
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - W Q Qiu
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - F Wang
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
| | - J Zhao
- Institute of Medical Information and Library, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100020, China
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Chen PH, Chung CM, Wang YY, Huang HW, Huang B, Lee KW, Yuan SS, Wu CW, Lin LS, Chan LP. CYP26A1 Is a Novel Biomarker for Betel Quid-Related Oral and Pharyngeal Cancers. Diagnostics (Basel) 2020; 10:diagnostics10110982. [PMID: 33233443 PMCID: PMC7700252 DOI: 10.3390/diagnostics10110982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/06/2020] [Accepted: 11/12/2020] [Indexed: 12/17/2022] Open
Abstract
Betel quid (BQ) has been classified as a Group I human carcinogen in light of evidence demonstrating an association with an elevated risk of oral and pharyngeal cancers. To date, the incidence rate of oral and pharynx cancers among Taiwanese men ranks the highest worldwide. However, no study has yet confirmed variants of CYP26A1 was associated with the risks of oral and pharyngeal cancers. A case-control study was conducted (n = 339). CYP26A1 polymorphism was performed using SNP assay. Real-time qRT-PCR and Western blotting were used to determine the levels of CYP26A1 expression. The cancer cell model involved treatment with arecoline. Our findings showed that the downregulation of CYP26A1 mRNA and protein expression are more frequently observed in cancerous tissues than adjacent normal tissues in patients with oral and pharynx cancers (p < 0.01). We found that CYP26A1 was downregulated as the arecoline dose increased. We hypothesized that lower levels of CYP26A1 mRNA expression can be utilized a clinically biomarker causes oral and pharynx cancers. Arecoline appears to modulate CYP26A1 expression through specific pathways. Carriers of CYP26A1 SNP, rs2068888 (G/G)/rs4418728 (G/G) and who have lower levels of CYP26A1 expression are associated with an increased risk of oral and pharyngeal cancers.
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Affiliation(s)
- Ping-Ho Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (P.-H.C.); (Y.-Y.W.)
- Institute of Biomedical Sciences, National Sun Yat-sen University, No. 70 Lienhai Road, Kaohsiung 80424, Taiwan;
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Cohort Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
| | - Chia-Min Chung
- Center for Drug Abuse and Addiction, China Medical University Hospital, China Medical University, Taichung 406040, Taiwan;
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 406040, Taiwan
| | - Yen-Yun Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (P.-H.C.); (Y.-Y.W.)
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
| | - Hurng-Wern Huang
- Institute of Biomedical Sciences, National Sun Yat-sen University, No. 70 Lienhai Road, Kaohsiung 80424, Taiwan;
| | - Bin Huang
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ka-Wo Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Kaohsiung Municipal Ta-Tung Hospital and Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan;
| | - Shyng-Shiou Yuan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Che-Wei Wu
- Cohort Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Otorhinolaryngology-Head and Neck Surgery, Kaohsiung Municipal Siaogang Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Lee-Shuan Lin
- Laboratory of Veterinary Diagnostic Imaging, Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung 912301, Taiwan;
| | - Leong-Perng Chan
- Cohort Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
- Department of Otorhinolaryngology-Head and Neck Surgery, Kaohsiung Municipal Ta-Tung Hospital and Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan;
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: ; Tel.: +886-7-312-1101; Fax: +886-7-315-7024
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Wang YY, Wang WC, Su CW, Hsu CW, Yuan SS, Chen YK. Overexpression of sprouty 1 protein in human oral squamous cell carcinogenesis. J Dent Sci 2020; 16:21-28. [PMID: 33384774 PMCID: PMC7770302 DOI: 10.1016/j.jds.2020.07.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 07/21/2020] [Revised: 07/23/2020] [Indexed: 01/18/2023] Open
Abstract
Abstract Background/purpose Sprouty (SPRY) has four isoforms, SPRY1–4, and its deficiency produces haphazard ‘sprouting’ of tracheal tubules. This study investigated SPRY1 protein expression in human oral potentially malignant disorders (OPMDs) and oral squamous cell carcinomas (OSCCs). Materials and methods 90 OSCCs, 10 OPMDs with malignant transformation (MT), 17 OPMDs without MT, and six normal oral mucosa (NOM) tissue samples were subjected to immunohistochemical staining. Three human oral cancer cell lines (OCCLs), an oral precancer cell line (DOK), and a primary culture of normal oral keratinocytes (HOK) were used for western blotting. Results Significantly increased expression of SPRY1 protein from NOM and OPMD without MT to OSCC was observed. The protein expressions of SPRY1 in OCCLs were significantly enhanced as compared with DOK and HOK. Increased phosphor/total-ERK expression was observed in OCCLs as compared with HOK. A significantly increased SPRY1 protein level was noted in OPMDs with MT as compared with those without MT, in addition to a significant increase in DOK in comparison with HOK. Conclusion Our results indicated that overexpression of SPRY1 protein is potentially associated with human oral squamous cell carcinogenesis.
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Affiliation(s)
- Yen-Yun Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Chen Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chiang-Wei Su
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ching-Wei Hsu
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Shyng-Shiou Yuan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Obstetrics and Gynecology and Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
- Corresponding author. Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung, 80708, Taiwan. Fax: +886 7 3210637.
| | - Yuk-Kwan Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan
- Corresponding author. School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung, 80708, Taiwan. Fax: +886 7 3210637.
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Bow YD, Wang YY, Chen YK, Su CW, Hsu CW, Xiao LY, Yuan SS, Li RN. Silencing of FOXA2 decreases E-cadherin expression and is associated with lymph node metastasis in oral cancer. Oral Dis 2020; 26:756-765. [PMID: 31957176 DOI: 10.1111/odi.13282] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 12/02/2019] [Accepted: 01/09/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVES FOXA2 gene methylation links to the progression of cancers, but has not been documented in oral cancer. Herein, we explore the role of FOXA2 in the migration of oral cancer cells. MATERIAL AND METHODS Methylation-specific PCR was applied for gene methylation. Wound healing and transwell experiments were tested for cell migration. FOXA2 expression in oral cancer tissues was addressed by immunohistochemistry, followed by statistical analysis of its association with clinical manifestations and patient survival. RESULTS FOXA2 bound to the promoter of CDH1 and enhanced the expression of its gene product E-cadherin, and decreased the cancer cell migration activity. High FOXA2 expression in oral cancer tissues was associated with high E-cadherin expression, decreased lymph node metastasis, and increased patient survival. CONCLUSION FOXA2-E-cadherin link is involved in regulation of oral cancer cell metastasis and provides a new insight for the tumor suppressor activity of FOXA2 in oral cancer.
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Affiliation(s)
- Yung-Ding Bow
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yen-Yun Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yuk-Kwan Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Oral Pathology & Maxillofacial Radiology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Oral & Maxillofacial Imaging Center, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chang-Wei Su
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Oral and Maxillofacial Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ching-Wei Hsu
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.,Division of Oral and Maxillofacial Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ling-Yi Xiao
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shyng-Shiou Yuan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ruei-Nian Li
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
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Huang CJ, Huang MY, Shih MCP, Cheng KY, Lee KW, Lu TY, Yuan SS, Fang PT. Post-radiation sinusitis is associated with recurrence in nasopharyngeal carcinoma patients treated with intensity-modulated radiation therapy. Radiat Oncol 2019; 14:61. [PMID: 30971260 PMCID: PMC6458621 DOI: 10.1186/s13014-019-1261-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 03/27/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND This study investigated the impact of post-radiation sinusitis on the prognosis of nasopharyngeal carcinoma (NPC) patients treated with intensity-modulated radiation therapy (IMRT). METHODS Two hundred and thirty patients with non-metastatic NPC were analyzed in terms of freedom from local failure (FFLF), freedom from distant failure (FFDF), overall survival (OS), and disease-free survival (DFS). For each patient, the status of the sinus mucosa was flexibly assessed by documenting mucosal changes as indicated by differences between images obtained before radiotherapy and more than 6 months post-radiation. RESULTS With a median follow-up of 39.7 months (8 to 81 months), 19 (8.26%) patients relapsed locally, 13 (5.65%) patients failed in the neck, and 26 (11.3%) patients developed distant metastases. The presence of sinusitis noted in images post-radiation was a significant predictor for DFS (p = 0.001), FFLF (p = 0.004), and FFDF (p = 0.015), in addition to having high negative predictive value for local relapse (97.5%). CONCLUSIONS This is the first study to investigate the prognostic value of post-radiation sinusitis in NPC patients treated with IMRT. Post-radiation sinusitis was found to be a significant predictor for DFS, FFLF, and FFDF, and was also found to have high negative predictive value for local recurrence (97.5%). It may thus be used as an additional tool for clinicians to determine the possibility of recurrence.
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Affiliation(s)
- Chih-Jen Huang
- Department of Radiation Oncology, Kaohsiung Medical University Hospital, No.100, Tzyou 1st Road, Kaohsiung, 807 Taiwan
- Department of Radiation Oncology, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Yii Huang
- Department of Radiation Oncology, Kaohsiung Medical University Hospital, No.100, Tzyou 1st Road, Kaohsiung, 807 Taiwan
- Department of Radiation Oncology, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Chen Paul Shih
- Department of Medical imaging, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Department of Radiology, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Kai-yuan Cheng
- Department of Otolaryngology-Head and Neck Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ka-Wo Lee
- Department of Otolaryngology-Head and Neck Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Tzu-Ying Lu
- Department of Radiation Oncology, Kaohsiung Medical University Hospital, No.100, Tzyou 1st Road, Kaohsiung, 807 Taiwan
- Department of Radiation Oncology, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shyng-Shiou Yuan
- Translational Research Center, Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Pen-Tzu Fang
- Department of Radiation Oncology, Kaohsiung Medical University Hospital, No.100, Tzyou 1st Road, Kaohsiung, 807 Taiwan
- Department of Radiation Oncology, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Huang CJ, Huang MY, Fang PT, Chen F, Wang YT, Chen CH, Yuan SS, Huang CM, Luo KH, Chuang HY, Wang YY, Lee HH. Randomized double-blind, placebo-controlled trial evaluating oral glutamine on radiation-induced oral mucositis and dermatitis in head and neck cancer patients. Am J Clin Nutr 2019; 109:606-614. [PMID: 30753262 PMCID: PMC6408208 DOI: 10.1093/ajcn/nqy329] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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: 08/10/2018] [Accepted: 10/22/2018] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Glutamine is the primary fuel for the gastrointestinal epithelium and maintains the mucosal structure. Oncologists frequently encounter oral mucositis, which can cause unplanned breaks in radiotherapy (RT). OBJECTIVES The aim of this study was to explore the association between oral glutamine and acute toxicities in patients with head and neck cancer undergoing RT. METHODS This was a parallel, double-blind, randomized, placebo-controlled Phase III trial conducted in a university hospital. A central randomization center used computer-generated tables to allocate interventions to 71 patients with stages I-IV head and neck cancers. The patients, care providers, and investigators were blinded to the group assignment. Eligible patients received either oral glutamine (5 g glutamine and 10 g maltodextrin) or placebo (15 g maltodextrin) 3 times daily from 7 d before RT to 14 d after RT. The primary and secondary endpoints were radiation-induced oral mucositis and neck dermatitis, respectively. These were documented in agreement with the National Cancer Institute Common Terminology Criteria for Adverse Events version 3. RESULTS The study included 64 patients (placebo n = 33; glutamine n = 31) who completed RT for the completers' analysis. Based on multivariate analysis, glutamine had no significant effect on the severity of oral mucositis (OR: 0.3; 95% CI: 0.05, 1.67; P = 0.169). Only the change in body mass index (BMI) was significant in both multivariate completers (OR: 0.41; 95% CI: 0.20, 0.84; P = 0.015) and per-protocol analysis (OR: 0.40; 95% CI: 0.20, 0.83; P = 0.014). No difference was found in the incidence and severity of neck dermatitis between the two arms. CONCLUSIONS The decrease in BMI was strongly related to the severity of oral mucositis in the head and neck cancer patients under RT, but not to the use of glutamine. This trial was registered at clinicaltrials.gov as NCT03015077.
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Affiliation(s)
- Chih-Jen Huang
- Division of Radiation Oncology, Department of Radiation Oncology,Faculty of Medicine, College of Medicine
| | - Ming-Yii Huang
- Division of Radiation Oncology, Department of Radiation Oncology,Faculty of Medicine, College of Medicine
| | - Pen-Tzu Fang
- Division of Radiation Oncology, Department of Radiation Oncology
| | - Frank Chen
- Division of Radiation Oncology, Department of Radiation Oncology
| | | | | | | | - Chun-Ming Huang
- Division of Radiation Oncology, Department of Radiation Oncology,Faculty of Medicine, College of Medicine
| | - Kuei-Hau Luo
- Department of Occupational and Environmental Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hung-Yi Chuang
- Department of Occupational and Environmental Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan,Faculty of Department of Public Health, College of Health Science, Kaohsiung Medical University, Kaohsiung, Taiwan
| | | | - Hsin-Hua Lee
- Division of Radiation Oncology, Department of Radiation Oncology,PhD Program in Environmental and Occupational Medicine, Kaohsiung Medical University and National Health Research Institutes, Kaohsiung, Taiwan,Address correspondence to H-HL (e-mail: )
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Wu J, Sun TY, Zhao M, Liu Q, Yuan SS, Shao FQ. [A comparative study on the three methods of concentration of norovirus from water]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:1188-1190. [PMID: 30419707 DOI: 10.3760/cma.j.issn.0253-9624.2018.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J Wu
- Institute for Health Inspection, The Center for Disease Control and Prevention of Linan District, Hangzhou, Zhejiang 311300, China
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Chang YC, Fong Y, Tsai EM, Chang YG, Chou HL, Wu CY, Teng YN, Liu TC, Yuan SS, Chiu CC. Exogenous C₈-Ceramide Induces Apoptosis by Overproduction of ROS and the Switch of Superoxide Dismutases SOD1 to SOD2 in Human Lung Cancer Cells. Int J Mol Sci 2018; 19:ijms19103010. [PMID: 30279365 PMCID: PMC6213533 DOI: 10.3390/ijms19103010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 07/18/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 02/07/2023] Open
Abstract
Ceramides, abundant sphingolipids on the cell membrane, can act as signaling molecules to regulate cellular functions including cell viability. Exogenous ceramide has been shown to exert potent anti-proliferative effects against cancer cells, but little is known about how it affects reactive oxygen species (ROS) in lung cancer cells. In this study, we investigated the effect of N-octanoyl-D-erythro-sphingosine (C₈-ceramide) on human non-small-cell lung cancer H1299 cells. Flow cytometry-based assays indicated that C₈-ceramide increased the level of endogenous ROS in H1299 cells. Interestingly, the ratio of superoxide dismutases (SODs) SOD1 and SOD2 seem to be regulated by C₈-ceramide treatment. Furthermore, the accumulation of cell cycle G1 phase and apoptotic populations in C₈-ceramide-treated H1299 cells was observed. The results of the Western blot showed that C₈-ceramide causes a dramatically increased protein level of cyclin D1, a critical regulator of cell cycle G1/S transition. These results suggest that C₈-ceramide acts as a potent chemotherapeutic agent and may increase the endogenous ROS level by regulating the switch of SOD1 and SOD2, causing the anti-proliferation, and consequently triggering the apoptosis of NSCLC H1299 cells. Accordingly, our works may give a promising strategy for lung cancer treatment in the future.
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Affiliation(s)
- Yuli C Chang
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yao Fong
- Chest Surgery, Chi-Mei Medical Center, Yung Kang City, Tainan 901, Taiwan.
| | - Eing-Mei Tsai
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Ya-Gin Chang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Han Lin Chou
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chang-Yi Wu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;.
| | - Yen-Ni Teng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 700, Taiwan.
| | - Ta-Chih Liu
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Shyng-Shiou Yuan
- Translational Research Center, Cancer Center, Department of Medical Research, Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chien-Chih Chiu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;.
- Translational Research Center, Cancer Center, Department of Medical Research, Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Research Center for Environment Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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Liao PH, Wang YY, Wang WC, Chen CH, Kao YH, Hsu JW, Chen CY, Chen PH, Yuan SS, Chen YK. Overexpression of sprouty2 in human oral squamous cell carcinogenesis. Arch Oral Biol 2017; 87:131-142. [PMID: 29291435 DOI: 10.1016/j.archoralbio.2017.12.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 05/13/2017] [Revised: 11/23/2017] [Accepted: 12/21/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE This study investigated SPRY2 expression in human oral potentially malignant disorders (OPMDs) and oral squamous cell carcinomas (OSCCs). METHODS 75 OSCCs, 23 OPMDs with malignant transformation (MT), 17 OPMDs without MT, and eight normal oral mucosa (NOM) tissues were used for immunohistochemical staining; three OSCC tissues with normal tissue counterparts were used for western blotting. Three human oral cancer cell lines (OCCLs), an oral precancer cell line (DOK), and a NOM primary culture (NOMPC) were used for western blotting; OCCLs and NOMPC were employed for real-time quantitative reverse transcription-polymerase chain reaction. OCCLs were evaluated in terms of proliferation, migration, invasion and BRAF V600E point mutation assays. RESULTS Significantly increased SPRY2 protein expression was observed in OSCCs as compared with NOM, and SPRY2 expression also differed between OSCC patients with and without lymph-node metastasis. SPRY2 protein and mRNA expressions were significantly enhanced as compared with NOMPC. Increased phospho-ERK expression was observed in OCCLs as compared with NOMPC. Significant decreases in the proliferation rate, degrees of migration and invasion were noted in OCCLs with SPRY2 siRNA transfection as compared with those without SPRY2 siRNA transfection. No BRAF V600E point mutation was observed for OCCLs as compared with NOMPC. A significantly increased SPRY2 protein level was noted in OPMDs with MT as compared to those without MT, and was also found in OPMDs with MT in comparison with NOM, as well as in DOK in comparison with NOMPC. CONCLUSIONS Our results indicated that SPRY2 overexpression is associated with human oral squamous-cell carcinogenesis.
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Affiliation(s)
- Pei-Hsien Liao
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yen-Yun Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Chen Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chung-Ho Chen
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yu-Hsun Kao
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Jing-Wei Hsu
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ching-Yi Chen
- Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ping-Ho Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shyng-Shiou Yuan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Obstetrics and Gynecology and Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Yuk-Kwan Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Division of Oral Pathology & Maxillofacial Radiology, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Oral & Maxillofacial Imaging Center, Kaohsiung Medical University, Kaohsiung, Taiwan.
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20
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Na ZY, Qiao Q, Wang QC, Zhou MY, Yuan SS, Wen X, Cheng W. [Analysis of sonographic characteristics of thyroid nodules diagnosed as false positive or negative results in shear wave elastography]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1191-1195. [PMID: 29798356 DOI: 10.13201/j.issn.1001-1781.2017.15.012] [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] [Received: 03/20/2017] [Indexed: 11/12/2022]
Abstract
Objective:In order to improve diagnostic accuracy, we study the characteristics of two dimensional ultrasound and shear wave elastography in the diagnosis of false negative or false positive thyroid nodules by shear wave elastography.Method:One hundred and eighty-nine nodules in 189 consecutive patients who had been determined by surgical operation and pathology. Conventional ultrasound features and SWE elasticity imaging characteristics and properties of the final postoperative pathology were recorded. A comparative study between true and false results of quantitative SWE elasticity imaging, and the corresponding conventional ultrasound nodule characteristics were compared.Result:Postoperative pathology showed 189 nodules, 74(39.2%) were benign and 115(60.8%) were malignant. The sensitivity, specificity of conventional ultrasound in the diagnosis of thyroid nodules were 56.5% and 81.1% respectively, and those of SWE were 60.9% and 85.1%. The false positive rate of shear wave elastography in diagnosing benign nodules and the false negative rate of malignant nodules were 14.9% and 39.1%, respectively. The false negative rate was higher than the false positive rate. A vertical growth (P< 0.01) and smaller diameter of the masses were significantly associated with false SWE findings (P< 0.01).Conclusion:The SWE imaging has important significance for differentiating benign and malignant thyroid nodules, but false results are inevitable, which requires clinicians conjunction with other test results to prevent errors judgment when reviewing the SWE imaging.
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Affiliation(s)
- Z Y Na
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Q Qiao
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - Q C Wang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - M Y Zhou
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - S S Yuan
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - X Wen
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, 150081, China
| | - W Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, 150081, China
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Guo S, Cheng N, Ge SF, Yuan SS, Wu XP, Xiang TX, Zhou GL. [Role and clinical significance of Th17/Treg balance in patients with severe exacerbation of hepatitis B]. Zhonghua Gan Zang Bing Za Zhi 2017; 24:341-6. [PMID: 27470886 DOI: 10.3760/cma.j.issn.1007-3418.2016.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the role of Th17/Treg balance in immune mechanism in severe exacerbation of hepatitis B. METHODS The clinical data of 41 patients with chronic hepatitis B were collected, and according to the conditions during hospitalization, these patients were divided into exacerbation group (19 patients) and improvement group (22 patients). On admission, at weeks 1 and 2 of treatment, and at the end of treatment, flow cytometry was used to measure the frequencies of Th17 and Treg cells in peripheral blood, and enzyme-linked immunosorbent assay was used to determine the serum levels of interleukin-17 (IL-17), interleukin-10 (IL-10), and transforming growth factor-β (TGF-β). The dynamic changes in the frequencies of Th17 and Treg cells were compared between the two groups, and the correlation between clinical indices for hepatitis and cytokines was analyzed. The t-test was used for comparison between groups, a one-way analysis of variance was used for comparison within one group across different time points, and Pearson correlation analysis was performed. RESULTS With disease progression, the exacerbation group showed an increase in the frequency of Th17 cells and a relatively low frequency of Treg cells; compared with the improvement group, the exacerbation group had a higher frequency of Th17 cells and a lower frequency of Treg cells. Th17/Treg ratio gradually increased with exacerbation and decreased with improvement in conditions; in the exacerbation group and the improvement group, Th17/Treg ratio was positively correlated with total bilirubin and negatively correlated with prothrombin activity. In the exacerbation group and the improvement group, Th17 cells were positively correlated with IL-17, and Treg cells were positively correlated with IL-10 and TGF-β. CONCLUSION Th17 and Treg cells play important roles in severe exacerbation of hepatitis B, and Th17/Treg ratio may be used as an immunobiological marker for the judgment of severity during severe exacerbation of hepatitis B.
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Affiliation(s)
- S Guo
- School of Medicine, Nanchang University Postgraduate, Department of Infectious Diseases, First Affiliated Hospital of Nanchang University, Nanchang 330006, China
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Chiu CP, Hwang TL, Chan Y, El-Shazly M, Wu TY, Lo IW, Hsu YM, Lai KH, Hou MF, Yuan SS, Chang FR, Wu YC. Research and development of Cordyceps in Taiwan. Food Science and Human Wellness 2016. [DOI: 10.1016/j.fshw.2016.08.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Chang FR, Huang ST, Liaw CC, Yen MH, Hwang TL, Chen CY, Hou MF, Yuan SS, Cheng YB, Wu YC. Diterpenes from Grangea maderaspatana. Phytochemistry 2016; 131:124-129. [PMID: 27567453 DOI: 10.1016/j.phytochem.2016.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 08/06/2016] [Accepted: 08/16/2016] [Indexed: 06/06/2023]
Abstract
Phytochemical investigation of the ethanolic extract of Grangea maderaspatana led to isolation of gramaderins A-D, together with thirteen known compounds. All isolates were assayed for their anti-inflammatory activities. Consequently, 5,7-dihydroxy-3,6,3',4',5'-pentamethoxyflavone and 5,3'-dihydroxy-3,6,7,4',5'-pentamethoxyflavone showed significant bioactivities by inhibiting superoxide anion generation. 8-Acetoxy-pentadeca-1,9Z,14-trien-4,6-diyne-3-ol also demonstrated potent inhibition on elastase release. The gramaderins A/C (β-alkyl linked γ-lactone) and gramaderins B/D (α-alkyl linked γ-lactone) co-exist in this plant material, of which the latter derivatives are few in nature. Gramaderins C/D possess a special linear dilactone diterpene skeleton, which never been reported.
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Affiliation(s)
- Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Shih-Ting Huang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chih-Chuang Liaw
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Ming-Hong Yen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan; Research Center for Industry of Human Ecology and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; Immunology Consortium, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Ching-Yeu Chen
- Department of Physical Therapy, Tzu-Hui Institute of Technology, Pingtung 926, Taiwan
| | - Ming-Feng Hou
- Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Shyng-Shiou Yuan
- Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Yuan-Bin Cheng
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Research Center for Natural Products & Drug Development, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yang-Chang Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan; School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan; Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan; Center for Molecular Medicine, China Medical University Hospital, Taichung 404, Taiwan; Research Center for Chinese Herbal Medicine, China Medical University, Taichung 404, Taiwan.
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Fong Y, Tang CC, Hu HT, Fang HY, Chen BH, Wu CY, Yuan SS, Wang HMD, Chen YC, Teng YN, Chiu CC. Inhibitory effect of trans-ferulic acid on proliferation and migration of human lung cancer cells accompanied with increased endogenous reactive oxygen species and β-catenin instability. Chin Med 2016; 11:45. [PMID: 27733866 PMCID: PMC5045596 DOI: 10.1186/s13020-016-0116-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 09/19/2016] [Indexed: 12/13/2022] Open
Abstract
Background Trans-ferulic (FA) acid exhibits antioxidant effects in vitro. However, the underlying mechanism of trans-FA activity in cellular physiology, especially cancer physiology, remains largely unknown. This study investigated the cellular physiological effects of trans-FA on the H1299 human lung cancer cell line. Methods The 2,2-diphenyl-1-picrylhydrazyl assay was used to determine free radical scavenging capability. Assessment of intracellular reactive oxygen species (ROS) was evaluated using oxidized 2ʹ,7ʹ-dichlorofluorescin diacetate and dihydroethidium staining. Trypan blue exclusion, colony formation, and anchorage-independent growth assays were used to determine cellular proliferation. Annexin V staining assay was used to assess cellular apoptosis by flow cytometry. Wound healing and Boyden’s well assays were used to detect the migration and invasion of cells. Gelatin zymography was used to detect matrix metalloproteinase (MMP-2 and MMP-9) activity. Western blotting was used to detect expression levels of various signaling pathway proteins. Results DPPH assay results indicated that trans-FA exerted potent antioxidant effects. However, trans-FA increased intracellular ROS levels, including hydrogen peroxide and superoxide anion, in H1299 cells. Trans-FA treatment inhibited cellular proliferation and induced moderate apoptotic cell death at the highest concentration used (0.6 mM). Furthermore, trans-FA moderately inhibited the migration of H1299 cells at the concentrations of 0.3 and 0.6 mM and attenuated MMP-2 and MMP-9 activity. Trans-FA caused the phosphorylation of β-catenin, resulting in proteasomal degradation of β-catenin. Conversely, trans-FA treatment increased the expression of pro-apoptotic factor Bax and decreased the expression of pro-survival factor survivin. Conclusion Various concentrations (0.06–0.6 mM) of trans-FA exert both anti-proliferation and anti-migration effects in the human lung cancer cell line H1299. Electronic supplementary material The online version of this article (doi:10.1186/s13020-016-0116-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yao Fong
- Department of Thoracic Surgery, Chi-Mei Medical Center, Tainan, 710 Taiwan
| | - Chia-Chun Tang
- Division of Chest, Ten Chan General Hospital, Chung-Li, 320 Taiwan, ROC
| | - Huei-Ting Hu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Hsin-Yu Fang
- Department of Food Nutrition, Chung-Hwa University of Medical Technology, Tainan, 701 Taiwan
| | - Bing-Hung Chen
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan.,The Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, 804 Taiwan
| | - Chang-Yi Wu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan.,Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, 804 Taiwan
| | - Shyng-Shiou Yuan
- Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung, 807 Taiwan
| | - Hui-Min David Wang
- Graduate Institute of Biomedical Engineering, National Chung Hsing University, Taichung, 402 Taiwan
| | - Yen-Chun Chen
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
| | - Yen-Ni Teng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan, 700 Taiwan
| | - Chien-Chih Chiu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, 807 Taiwan.,Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, 804 Taiwan.,Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung, 807 Taiwan.,Research Center for Environment Medicine, Kaohsiung Medical University, Kaohsiung, 807 Taiwan
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Wu SC, Lu CY, Chen YL, Lo FC, Wang TY, Chen YJ, Yuan SS, Liaw WF, Wang YM. Water-Soluble Dinitrosyl Iron Complex (DNIC): a Nitric Oxide Vehicle Triggering Cancer Cell Death via Apoptosis. Inorg Chem 2016; 55:9383-92. [DOI: 10.1021/acs.inorgchem.6b01562] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Shou-Cheng Wu
- Department of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chung-Yen Lu
- Department of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yi-Lin Chen
- Department of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Feng-Chun Lo
- Department of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Ting-Yin Wang
- Department of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Jen Chen
- Department
of Biological Science and Technology, Institute of Molecular Medicine
and Bioengineering, National Chiao Tung University, Hsinchu 30013, Taiwan
| | - Shyng-Shiou Yuan
- Translational Research
Center, Department of Medical Research, and Department of Obstetrics
and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Wen-Feng Liaw
- Department of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yun-Ming Wang
- Department
of Biological Science and Technology, Institute of Molecular Medicine
and Bioengineering, National Chiao Tung University, Hsinchu 30013, Taiwan
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Hsu YM, Lai WC, Li CY, Lan YH, Tsai YC, Hunyadi A, Hou MF, Yuan SS, Wu YC, Chang FR. Estrogenic and Anti-estrogenic Constituents of Erythrina caffra. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Utilizing the pER8:GUS transgenic plant bioassay system to monitor estrogenic activity-guided fractionation, one new constituent, erycaffrain A, together with 11 known compounds were isolated from the ethanolic extract of Erythrina caffra. The structures of the isolated compounds were identified in combination with spectroscopic analyses. This is the first study reporting the estrogenic activity of E. caffra. The new compound exhibited as a SREM, but also showed both estrogenic and anti-estrogenic activities in the MCF-7 cancer cell model. Several known phytoestrogens in this plant also revealed possible new functions for E. caffra stem.
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Affiliation(s)
- Yu-Ming Hsu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807,Taiwan
| | - Wan-Chun Lai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807,Taiwan
| | - Chi-Ying Li
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807,Taiwan
| | - Yu-Hsuan Lan
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan
| | - Yu-Chi Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807,Taiwan
| | - Attila Hunyadi
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
| | - Ming-Feng Hou
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shyng-Shiou Yuan
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan
- Research Center for Chinese Herbal Medicine, China Medical University, Taichung 404, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404,Taiwan
- Center of Molecular Medicine, China Medical University Hospital, Taichung 404, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807,Taiwan
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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27
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Lo IW, Cheng YB, Haung CC, Hwang TL, Wu CC, Liou JR, Hou MF, Yuan SS, Chang FR, Wu YC. Constituents of the Leaves of Pandanus Utilis. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Nineteen compounds, including seven triterpenoids (1–7), five steroids (8–12), four cyclohexenone derivatives (13–16), two benzenoid glycosides (17 and 18) and one lignan (19), were isolated and separated from the leaves of Pandanus utilis through bioactivity-guided fractionation. Among them, one new lanosterol-type triterpenoid was found and named as (24 R)-24-methyl-5α-4-demethyllanosta-9(11),25-dien-3β-ol (1). The structures of the isolates were determined by mass and spectroscopic analyses, and the compounds were subjected to anti-inflammatory, anti-oxidative and cytotoxic assays.
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Affiliation(s)
- I-Wen Lo
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yuan-Bin Cheng
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chen-Chang Haung
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Jing-Ru Liou
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ming-Feng Hou
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Shyng-Shiou Yuan
- Lipid Science and Aging Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 40402, Taiwan
- Research Center for Chinese Herbal Medicine, China Medical University, Taichung 40402, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40402, Taiwan
- Center of Molecular Medicine, China Medical University Hospital, Taichung 40402, Taiwan
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28
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Loa IW, Cheng YB, Haung CC, Hwang TL, Wu CC, Liou JR, Hou MF, Yuan SS, Chang FR, Wu YC. Constituents of the Leaves of Pandanus utilis. Nat Prod Commun 2016; 11:173-176. [PMID: 27032193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
Nineteen compounds, including seven triterpenoids (1-7), five steroids (8-12), four cyclohexenone derivatives (13-16), two benzenoid glycosides (17 and 18) and one lignan (19), were isolated and separated from the leaves of Pandanus utilis through bioactivity-guided fractionation. Among them, one new lanosterol- type triterpenoid was found and named as (24R)-24-methyl-5a-4-demethyllanosta-9(11),25-dien-3β-ol (1). The structures of the isolates were determined by mass and spectroscopic analyses, and the compounds were subjected to anti-inflammatory, anti-oxidative and cytotoxic assays.
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29
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Wu SC, Chen YJ, Wang HC, Chou MY, Chang TY, Yuan SS, Chen CY, Hou MF, Hsu JTA, Wang YM. Bispecific Antibody Conjugated Manganese-Based Magnetic Engineered Iron Oxide for Imaging of HER2/neu- and EGFR-Expressing Tumors. Am J Cancer Res 2016; 6:118-30. [PMID: 26722378 PMCID: PMC4679359 DOI: 10.7150/thno.13069] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 09/21/2015] [Indexed: 11/05/2022] Open
Abstract
The overexpression of HER2/neu and EGFR receptors plays important roles in tumorigenesis and tumor progression. Targeting these two receptors simultaneously can have a more widespread application in early diagnosis of cancers. In this study, a new multifunctional nanoparticles (MnMEIO-CyTE777-(Bis)-mPEG NPs) comprising a manganese-doped iron oxide nanoparticle core (MnMEIO), a silane-amino functionalized poly(ethylene glycol) copolymer shell, a near infrared fluorescence dye (CyTE777), and a covalently conjugated anti-HER2/neu and anti-EGFR receptors bispecific antibody (Bis) were successfully developed. In vitro T2-weighted MR imaging studies in SKBR-3 and A431 tumor cells incubated with MnMEIO-CyTE777-(Bis)-mPEG NPs showed - 94.8 ± 3.8 and - 84.1 ± 2.8% negative contrast enhancement, respectively. Pharmacokinetics study showed that MnMEIO-CyTE777-(Bis)-mPEG NPs were eliminated from serum with the half-life of 21.3 mins. In vivo MR imaging showed that MnMEIO-CyTE777-(Bis)-mPEG NPs could specifically and effectively target to HER2/neu- and EGFR-expressing tumors in mice; the relative contrast enhancements were 11.8 (at 2 hrs post-injection) and 61.5 (at 24 hrs post-injection) fold higher in SKBR-3 tumors as compared to Colo-205 tumors. T2-weighted MR and optical imaging studies revealed that the new contrast agent (MnMEIO-CyTE777-(Bis)-mPEG NPs) could specifically and effectively target to HER2/neu- and/or EGFR-expressing tumors. Our results demonstrate that MnMEIO-CyTE777-(Bis)-mPEG NPs are able to recognize the tumors expressing both HER2/neu and/or EGFR, and may provide a novel molecular imaging tool for early diagnosis of cancers expressing HER2/neu and/or EGFR.
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30
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Farooqi A, Li RN, Huang HW, Ismail M, Yuan SS, Wang HM, Liu JR, Tang JY, Chang HW. Natural Products Mediated Regulation of Oxidative Stress and DNA Damage in Ultraviolet Exposed Skin Cells. Curr Pharm Biotechnol 2015; 16:1078-84. [DOI: 10.2174/1389201016666150731111308] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 02/28/2015] [Accepted: 05/24/2015] [Indexed: 11/22/2022]
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31
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Cheng YB, Tsai YH, Lo IW, Haung CC, Tsai YC, Beerhues L, El-Shazly M, Hou MF, Yuan SS, Wu CC, Chang FR, Wu YC. Pandalisines A and B, novel indolizidine alkaloids from the leaves of Pandanus utilis. Bioorg Med Chem Lett 2015; 25:4333-6. [PMID: 26277406 DOI: 10.1016/j.bmcl.2015.07.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 06/27/2015] [Revised: 07/12/2015] [Accepted: 07/18/2015] [Indexed: 12/16/2022]
Abstract
Two novel alkaloids named pandalisines A (1) and B (2), constituting a new class of C8-substituted indolizidine moiety, were isolated from the leaves of Pandanus utilis. The structures of these new compounds were established by their mass and spectroscopic data. The absolute configuration was determined by the comparison of experimental CD and calculated ECD spectra. A plausible biosynthetic pathway for compounds 1 and 2 is advanced. The cytotoxic activities of the isolated alkaloids against A-549, Hep-G2, and MDA-MB-231 cancer cell lines were evaluated. The result showed that 1 and 2 are the first non-cytotoxic indolizidine alkaloids.
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Affiliation(s)
- Yuan-Bin Cheng
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yi-Hong Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - I-Wen Lo
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chen-Chang Haung
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yu-Chi Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ludger Beerhues
- Institute of Pharmaceutical Biology, Technische Universität Braunschweig, Braunschweig 38106, Germany
| | - Mohamed El-Shazly
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, Ain-Shams University, Cairo 11566, Egypt
| | - Ming-Feng Hou
- Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Shyng-Shiou Yuan
- Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.
| | - Yang-Chang Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; School of Pharmacy, College of Pharmacy, China Medical University, Taichung 40402, Taiwan; Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40402, Taiwan; Center of Molecular Medicine, China Medical University Hospital, Taichung 40402, Taiwan.
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32
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Yang MH, Chung TW, Lu YS, Chen YL, Tsai WC, Jong SB, Yuan SS, Liao PC, Lin PC, Tyan YC. Activation of the ubiquitin proteasome pathway by silk fibroin modified chitosan nanoparticles in hepatic cancer cells. Int J Mol Sci 2015; 16:1657-76. [PMID: 25588218 PMCID: PMC4307326 DOI: 10.3390/ijms16011657] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 01/06/2015] [Indexed: 12/20/2022] Open
Abstract
Silk fibroin (SF) is a protein with bulky hydrophobic domains and can be easily purified as sericin-free silk-based biomaterial. Silk fibroin modified chitosan nanoparticle (SF-CSNP), a biocompatible material, has been widely used as a potential drug delivery system. Our current investigation studied the bio-effects of the SF-CSNP uptake by liver cells. In this experiment, the characterizations of SF-CSNPs were measured by particle size analysis and protein assay. The average size of the SF-CSNP was 311.9 ± 10.7 nm, and the average zeta potential was +13.33 ± 0.3 mV. The SF coating on the SF-CSNP was 6.27 ± 0.17 μg/mL. Moreover, using proteomic approaches, several proteins involved in the ubiquitin proteasome pathway were identified by analysis of differential protein expressions of HepG2 cell uptake the SF-CSNP. Our experimental results have demonstrated that the SF-CSNP may be involved in liver cancer cell survival and proliferation.
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Affiliation(s)
- Ming-Hui Yang
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Tze-Wen Chung
- Department of Biomedical Engineering, National Yang-Ming University, Taipei 112, Taiwan.
| | - Yi-Shan Lu
- Department of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yi-Ling Chen
- Department of Nuclear Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Wan-Chi Tsai
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Shiang-Bin Jong
- Department of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Shyng-Shiou Yuan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Pao-Chi Liao
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Po-Chiao Lin
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Yu-Chang Tyan
- Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
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Liou JR, Wu TY, Thang TD, Hwang TL, Wu CC, Cheng YB, Chiang MY, Lan YH, El-Shazly M, Wu SL, Beerhues L, Yuan SS, Hou MF, Chen SL, Chang FR, Wu YC. Bioactive 6S-styryllactone constituents of Polyalthia parviflora. J Nat Prod 2014; 77:2626-32. [PMID: 25419616 DOI: 10.1021/np5004577] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Parvistones A-E (1-5), five new styryllactones possessing a rare α,β-lactone moiety and a 6S configuration, were isolated from a methanolic extract of Polyalthia parviflora leaves. The structures and the absolute configuration of the isolates were elucidated using NMR spectroscopy, specific rotation, circular dichroism, and X-ray single-crystal analysis. Compounds 8, 9, 11, and 12 were isolated for the first time. The results were supported by comparing the data measured to those of 6R-styryllactones. Moreover, a plausible biogenetic pathway of the isolated compounds was proposed. The structure-activity relationship of the compounds in an in vitro anti-inflammatory assay revealed the 6S-styryllactones to be more potent than the 6R derivatives. However, the effect was opposite regarding their cytotoxic activity. In addition, 6S-styrylpyrones isolated showed more potent anti-inflammatory and cytotoxic activity when compared to the 1S-phenylpyranopyrones obtained.
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Affiliation(s)
- Jing-Ru Liou
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University , Kaohsiung 807, Taiwan
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Fong Y, Lin YC, Wu CY, Wang HMD, Lin LL, Chou HL, Teng YN, Yuan SS, Chiu CC. The antiproliferative and apoptotic effects of sirtinol, a sirtuin inhibitor on human lung cancer cells by modulating Akt/β-catenin-Foxo3a axis. ScientificWorldJournal 2014; 2014:937051. [PMID: 25184156 PMCID: PMC4144300 DOI: 10.1155/2014/937051] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 06/29/2014] [Accepted: 06/30/2014] [Indexed: 12/17/2022] Open
Abstract
Sirtuins, NAD(+)-dependent deacetylases, could target both histones and nonhistone proteins in mammalian cells. Sirt1 is the major sirtuin and has been shown to involve various cellular processes, including antiapoptosis, cellular senescence. Sirt1 was reported to be overexpressed in many cancers, including lung cancer. Sirtinol, a specific inhibitor of Sirt1, has been shown to induce apoptosis of cancer cells by elevating endogenous level of reactive oxygen species. In the study, we investigated the effect of sirtinol on the proliferation and apoptosis of nonsmall cell lung cancer (NSCLC) H1299 cells. The results of proliferation assay and colony formation assay showed the antigrowth effect of sirtinol. The annexin-V staining further confirmed the apoptosis induction by sirtinol treatment. Interestingly, the levels of phosphorylated Akt and β-catenin were significantly downregulated with treating the apoptotic inducing doses. On the contrary, sirtinol treatment causes the significantly increased level of FoxO3a, a proapoptotic transcription factor targeted by Sirt1. These above results suggested that sirtinol may inhibit cell proliferation of H1299 cells by regulating the axis of Akt-β-catenin-FoxO3a. Overall, this study demonstrates that sirtinol attenuates the proliferation and induces apoptosis of NSCLC cells, indicating the potential treatment against NSCLC cells by inhibiting Sirt1 in future applications.
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Affiliation(s)
- Yao Fong
- Department of Thoracic Surgery, Chi-Mei Medical Center, Tainan 710, Taiwan
| | - Yin-Chieh Lin
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chang-Yi Wu
- Department of Biological Sciences, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung 804, Taiwan
| | - Hui-Min David Wang
- Department of Fragrance and Cosmetics Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Li-Li Lin
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Han Lin Chou
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yen-Ni Teng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 700, Taiwan
| | - Shyng-Shiou Yuan
- Translational Research Center, Cancer Center, Department of Medical Research, and Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chien-Chih Chiu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Biological Sciences, National Sun Yat-sen University, 70 Lien Hai Road, Kaohsiung 804, Taiwan
- Translational Research Center, Cancer Center, Department of Medical Research, and Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Lin CW, Lo S, Hsu C, Hsieh CH, Chang YF, Hou BS, Kao YH, Lin CC, Yu ML, Yuan SS, Hsieh YC. T-cell autophagy deficiency increases mortality and suppresses immune responses after sepsis. PLoS One 2014; 9:e102066. [PMID: 25029098 PMCID: PMC4100769 DOI: 10.1371/journal.pone.0102066] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/13/2014] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Although the role of autophagy in sepsis has been characterized in several organs, its role in the adaptive immune system remains to be ascertained. This study aimed to investigate the role of autophagy in sepsis-induced T cell apoptosis and immunosuppression, using knockout mice with T cell specific deletion of autophagy essential gene Atg7. METHODS AND RESULTS Sepsis was induced in a cecal ligation and puncture (CLP) model, with T-cell-specific Atg7-knockout mice compared to control mice. Autophagic vacuoles examined by electron microscopy were decreased in the spleen after CLP. Autophagy proteins LC3-II and ATG7, and autophagosomes and autolysosomes stained by Cyto-ID Green and acridine orange were decreased in CD4+ and CD8+ splenocytes at 18 h and 24 h after CLP. This decrease in autophagy was associated with increased apoptosis of CD4+ and CD8+ after CLP. Moreover, mice lacking Atg7 in T lymphocytes showed an increase in sepsis-induced mortality, T cell apoptosis and loss of CD4+ and CD8+ T cells, in comparison to control mice. This was accompanied by suppressed cytokine production of Th1/Th2/Th17 by CD4+ T cells, reduced phagocytosis in macrophages and decreased bacterial clearance in the spleen after sepsis. CONCLUSION These results indicated that sepsis led to down-regulation of autophagy in T lymphocytes, which may result in enhanced apoptosis induction and decreased survival in sepsis. Autophagy may therefore play a protective role against sepsis-induced T lymphocyte apoptosis and immunosuppression.
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Affiliation(s)
- Chih-Wen Lin
- Division of Gastroenterology and Hepatology, Department of Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
- Health Examination Center, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Steven Lo
- Department of Plastic and Reconstructive Surgery, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
- Canniesburn Plastic Surgery Unit, Royal Infirmary, Glasgow, United Kingdom
| | - Chin Hsu
- Department of Physiology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chi-Hsun Hsieh
- Department of Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan
- Department of Surgery, Benq Medical Center at Suzhou, Suzhou, China
| | - Ya-Fang Chang
- Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Bao-Sheng Hou
- Division of Gastroenterology and Hepatology, Department of Medicine, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
- Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Ying-Hsien Kao
- Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Chih-Che Lin
- Division of General Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
- College of Medicine, Chang Gung University, Gueishan, Taiwan
| | - Ming-Lung Yu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Hepatobiliary Division, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Shyng-Shiou Yuan
- Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
- Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- Department of Obstetrics & Gynecology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Ya-Ching Hsieh
- Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
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Kao YH, Lin YC, Tsai MS, Sun CK, Yuan SS, Chang CY, Jawan B, Lee PH. Involvement of the nuclear high mobility group B1 peptides released from injured hepatocytes in murine hepatic fibrogenesis. Biochim Biophys Acta Mol Basis Dis 2014; 1842:1720-32. [PMID: 24970745 DOI: 10.1016/j.bbadis.2014.06.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 05/24/2014] [Accepted: 06/16/2014] [Indexed: 12/27/2022]
Abstract
This study investigated the pro-fibrogenic role of high mobility group box 1 (HMGB1) peptides in liver fibrogenesis. An animal model of carbon tetrachloride (CCl4)-induced liver fibrosis was used to examine the serum HMGB1 levels and its intrahepatic distribution. The increased serum HMGB1 levels were positively correlated with elevation of transforming growth factor-β1 (TGF-β1) and collagen deposition during fibrogenesis. The cytoplasmic distribution of HMGB1 was noted in the parenchymal hepatocytes of fibrotic livers. In vitro studies confirmed that exposure to hydrogen peroxide and CCl4 induced an intracellular mobilization and extracellular release of nuclear HMGB1 peptides in clone-9 and primary hepatocytes, respectively. An uptake of exogenous HMGB1 by hepatic stellate cells (HSCs) T6 cells indicated a possible paracrine action of hepatocytes on HSCs. Moreover, HMGB1 dose-dependently stimulated HSC proliferation, up-regulated de novo synthesis of collagen type I and α-smooth muscle actin (α-SMA), and triggered Smad2 phosphorylation and its nuclear translocation through a TGF-β1-independent mechanism. Blockade with neutralizing antibodies and gene silencing demonstrated the involvement of the receptor for advanced glycation end-products (RAGE), but not toll-like receptor 4, in cellular uptake of HMGB1 and the HMGB1-mediated Smad2 and ERK1/2 phosphorylation as well as α-SMA up-regulation in HSC-T6 cells. Furthermore, anti-RAGE treatment significantly ameliorated CCl4-induced liver fibrosis. In conclusion, the nuclear HMGB1 peptides released from parenchymal hepatocytes during liver injuries may directly activate HSCs through stimulating HSC proliferation and transformation, eventually leading to the fibrotic changes of livers. Blockade of HMGB1/RAGE signaling cascade may constitute a therapeutic strategy for treatment of liver fibrosis.
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Affiliation(s)
- Ying-Hsien Kao
- Department of Medical Research, E-DA Hospital, Kaohsiung, Taiwan
| | - Yu-Chun Lin
- Department of Surgery, E-DA Hospital, Kaohsiung, Taiwan
| | | | - Cheuk-Kwan Sun
- Department of Medical Education, E-DA Hospital, Kaohsiung, Taiwan
| | - Shyng-Shiou Yuan
- Translational Research Center and Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Yang Chang
- Department of Obstetrics and Gynecology, E-DA Hospital, Kaohsiung, Taiwan
| | - Bruno Jawan
- Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan.
| | - Po-Huang Lee
- Department of Surgery, E-DA Hospital, Kaohsiung, Taiwan; Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan.
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Chen YH, Tsai JC, Cheng TH, Yuan SS, Wang YM. Sensitivity evaluation of NBD-SCN towards cysteine/homocysteine and its bioimaging applications. Biosens Bioelectron 2014; 56:117-23. [DOI: 10.1016/j.bios.2014.01.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 12/19/2013] [Accepted: 01/03/2014] [Indexed: 12/13/2022]
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Chuang YC, Lin CJ, Lo SF, Wang JL, Tzou SC, Yuan SS, Wang YM. Dual functional AuNRs@MnMEIOs nanoclusters for magnetic resonance imaging and photothermal therapy. Biomaterials 2014; 35:4678-87. [DOI: 10.1016/j.biomaterials.2014.02.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 02/12/2014] [Indexed: 11/16/2022]
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Chen YJ, Wu SC, Chen CY, Tzou SC, Cheng TL, Huang YF, Yuan SS, Wang YM. Peptide-based MRI contrast agent and near-infrared fluorescent probe for intratumoral legumain detection. Biomaterials 2013; 35:304-15. [PMID: 24120038 DOI: 10.1016/j.biomaterials.2013.09.100] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [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: 09/06/2013] [Accepted: 09/25/2013] [Indexed: 01/01/2023]
Abstract
Recent studies suggest that intratumoral legumain promotes tumorigenesis. To monitor legumain activity in tumors, we developed a new MRI contrast agent ([Gd-NBCB-TTDA-Leg(L)]) and a NIR fluorescence probe (CyTE777-Leg(L)-CyTE807). The MRI contrast agent was prepared by introduction of cyclobutyl and benzyl group residues to TTDA (3,6,10-tri(carboxymethyl)-3,6,10-triaza-dodecanedioic acid), followed by the attachment of a legumain-specific substrate peptide (Leg(L)). The NIR fluorescence probe was designed by conjugating two NIR fluorochromes (CyTE777 and CyTE807) with Leg(L). Peptide cleavage of the MRI contrast agent by legumain can increase its hydrophobicity and promote rotational correlation time (τ(R)). Peptide cleavage of the NIR probes by the legumain relieves the self quench of the probe. Peptide cleavage of the MRI contrast agent and the NIR fluorescence probe by legumain were confirmed by T1 relaxometric studies and by fluorescence studies, respectively. In vivo MR images showed that [Gd-NBCB-TTDA-Leg(L)] attained 55.3 fold (254.2% versus 4.6%, at 2.0 h post-injection) higher imaging enhancement, as compared with control contrast agent bearing a noncleaveable peptide ([Gd-NBCB-TTDA-Leg(D)], in the CT-26 (legumain(+)) tumors. Similarly, optical imaging probe CyTE777-Leg(L)-CyTE807 attained 15.2 fold (3.34 × 10(9) photons/min versus 0.22 × 10(9) photons/min, at 24.0 h post-injection) higher imaging enhancement in the CT-26 (legumain(+)) tumors, compared to a NIR control probe (CyTE777-Leg(D)-CyTE807). These data indicate that the [Gd-NBCB-TTDA-Leg(L)] and the CyTE777-Leg(L)-CyTE807 probes may be promising tools to image the legumain-expressing cancers for diagnoses and targeted treatments.
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Affiliation(s)
- Yu-Jen Chen
- Department of Biological Science and Technology, National Chiao Tung University, 75 Bo-Ai Street, Hsinchu 300, Taiwan
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40
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Chen YJ, Kay N, Yang JM, Lin CT, Chang HL, Wu YC, Fu CF, Chang Y, Lo S, Hou MF, Lee YC, Hsieh YC, Yuan SS. Total Synthetic Protoapigenone WYC02 Inhibits Cervical Cancer Cell Proliferation and Tumour Growth through PIK3 Signalling Pathway. Basic Clin Pharmacol Toxicol 2013; 113:8-18. [DOI: 10.1111/bcpt.12057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 01/28/2013] [Indexed: 11/28/2022]
Affiliation(s)
| | - Nari Kay
- Department of Obstetrics and Gynecology; E-DA Hospital; Kaohsiung; Taiwan
| | | | - Chih-Ta Lin
- Institute of Bioinformatics and Systems Biology; National Chiao Tung University; Hsinchu; Taiwan
| | | | | | - Chi-Feng Fu
- Department of Obstetrics and Gynecology; E-DA Hospital; Kaohsiung; Taiwan
| | - Yu Chang
- Department of Obstetrics and Gynecology; Kaohsiung Medical University Hospital; Graduate Institute of Medicine; College of Medicine; Kaohsiung Medical University; Kaohsiung; Taiwan
| | - Steven Lo
- Department of Plastic and Reconstructive Surgery; E-DA Hospital; Kaohsiung; Taiwan
| | - Ming-Feng Hou
- Cancer Center; Kaohsiung Medical University Hospital; Kaohsiung; Taiwan
| | - Yi-Chen Lee
- Graduate Institute of Medicine; College of Medicine and Department of Anatomy; Kaohsiung Medical University; Kaohsiung; Taiwan
| | - Ya-Ching Hsieh
- Department of Medical Research; E-DA Hospital; I-Shou University; Kaohsiung; Taiwan
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41
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Chen YJ, Hung CM, Kay N, Chen CC, Kao YH, Yuan SS. Progesterone receptor is involved in 2,3,7,8-tetrachlorodibenzo- p -dioxin-stimulated breast cancer cells proliferation. Cancer Lett 2012; 319:223-231. [DOI: 10.1016/j.canlet.2012.01.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 01/05/2012] [Accepted: 01/11/2012] [Indexed: 01/27/2023]
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42
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Cheng YJ, Tsai JW, Hsieh KC, Yang YC, Chen YJ, Huang MS, Yuan SS. Id1 promotes lung cancer cell proliferation and tumor growth through Akt-related pathway. Cancer Lett 2011; 307:191-9. [PMID: 21536374 DOI: 10.1016/j.canlet.2011.04.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Revised: 04/06/2011] [Accepted: 04/07/2011] [Indexed: 11/24/2022]
Abstract
Overexpression of Id family proteins inhibits cell differentiation and enhances cell proliferation and invasiveness. Although Id1 is the Id family member mostly linked to tumorigenesis, its role in lung cancer is unclear. An elevated Id1 expression was observed in lung cancer cell lines as well as lung cancer tissues. Id1 overexpression increased cell proliferation while Id1 knockdown decreased cell proliferation, mostly through Akt-related pathway. Nude mice study further confirmed an increased tumor growth in Id1-overexpressing cells and a decreased tumor growth in Id1-knockdowned cells. In conclusion, inactivation of Id1 may provide a novel strategy for treatment of lung cancer patients.
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Affiliation(s)
- Yu-Jen Cheng
- Division of Thoracic Surgery, Department of Surgery, E-DA Hospital, No. 1 E-DA Road, Jiau-Shu, Kaohsiung 824, Taiwan, ROC
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Chen HM, Chang FR, Hsieh YC, Cheng YJ, Hsieh KC, Tsai LM, Lin AS, Wu YC, Yuan SS. A novel synthetic protoapigenone analogue, WYC02-9, induces DNA damage and apoptosis in DU145 prostate cancer cells through generation of reactive oxygen species. Free Radic Biol Med 2011; 50:1151-62. [PMID: 21256211 DOI: 10.1016/j.freeradbiomed.2011.01.015] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 12/07/2010] [Accepted: 01/07/2011] [Indexed: 02/06/2023]
Abstract
The protoapigenone analogue WYC02-9, a novel synthetic flavonoid, has been shown to act against a variety of experimental tumors. However, its effects on prostate cancer and its mechanism of action are unknown. Thus, WYC02-9 was investigated for its cytotoxicity against DU145 prostate cancer cells, as was the underlying mechanisms by which WYC02-9 might induce DNA damage and apoptotic cell death through reactive oxygen species (ROS). WYC02-9 inhibited the cell growth of three prostate cancer cell lines, especially DU145 cells. In DU145 cells, WYC02-9 increased the generation of intracellular ROS, followed by induction of DNA damage and activation of the ATM-p53-H2A.X pathway and checkpoint-related signals Chk1/Chk2, which led to increased numbers of cells in the S and G2/M phases of the cell cycle. Furthermore, WYC02-9 induced apoptotic cell death through mitochondrial membrane potential decrease and activation of caspase-9, caspase-3, and PARP. The above effects were all prevented by the ROS scavenger N-acetylcysteine. Administration of WYC02-9 in a nude mouse DU145 xenograft model further identified the anti-cancer activity of WYC02-9. These findings therefore suggest that WYC02-9-induced DNA damage and mitochondria-dependent cell apoptosis in DU145 cells are mediated via ROS generation.
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Affiliation(s)
- Huei-Mei Chen
- Department of Medical Research, E-DA Hospital, Kaohsiung 824, Taiwan, Republic of China
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44
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Yeh YT, Ou-Yang F, Chen IF, Yang SF, Su JH, Hou MF, Yuan SS. Altered p-JAK1 expression is associated with estrogen receptor status in breast infiltrating ductal carcinoma. Oncol Rep 2007; 17:35-9. [PMID: 17143475 DOI: 10.3892/or.17.1.35] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [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: 11/06/2022] Open
Abstract
The mammalian Janus kinase (JAK) family consists of four members, namely JAK1, JAK2, JAK3 and TYK2, which play a critical role in cytokine/growth factor signaling and is increasingly associated with human cancers. Aberrant activation of these non-receptor tyrosine kinases may contribute to carcinogenesis. Herein, we focused on exploring the potential role of p-JAK1 in breast cancer. The expression profiles of p-JAK1 were analyzed in 68 pairs of cancer and non-cancer breast tissues from the same infiltrating ductal carcinoma case by using immunoblotting technique. The results obtained were further correlated with clinicopathological characteristics. Intriguingly, p-JAK1 expression was decreased in 55.9% of breast cancer tissues as compared to the matched non-cancer tissues. Further immunohistochemistry study showed an intense p-JAK1 staining predominantly in adjacent normal breast tissues but not the matched cancer lesions. Decreased p-JAK1 expression in breast cancer tissues was significantly correlated with positive estrogen receptor (ER) status and increased tumor size (p=0.010 and 0.009). We also found that p-JAK1 expression was high in ERalpha-negative breast cancer cell lines but was low in ERalpha-positive breast cell lines. Transfection of ERalpha-positive MCF-7 cells with an ERalpha-specific siRNA upregulated the expression of p-JAK1. In summary, our results indicated that an altered p-JAK1 expression might be involved in the development of breast infiltrating ductal carcinoma in an ERalpha-related manner.
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Affiliation(s)
- Y T Yeh
- Department of Medical Research and Department of Obstetrics and Gynecology, E-DA Hospital, Kaohsiung, Taiwan, ROC
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Yuan SS, Hou MF, Chang HL, Chan TF, Wu YH, Wu YC, Su JH. Arsenite-induced nitric oxide generation is cell cycle-dependent and aberrant in NBS cells. Toxicol In Vitro 2003; 17:139-43. [PMID: 12650666 DOI: 10.1016/s0887-2333(02)00129-7] [Citation(s) in RCA: 7] [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: 01/23/2023]
Abstract
Exposure to arsenic has been reported to cause DNA damage and eventually the occurrence of bladder, lung and skin cancers. A previous report has demonstrated that arsenite-induced phosphorylation of Mre11, a protein involved in the repair of DNA double strand breaks (DSBs), is M phase-dependent and requires the Nijmegen breakage syndrome (NBS) protein, NBS1 [DNA Repair 1 (2002) 137]. Furthermore, arsenite treatment arrests cells at the M phase and the cells eventually go through apoptosis [Biochemical Pharmacology 60 (2000) 771]. Here we demonstrate that arsenite treatment enhances the generation of nitric oxide (NO), and that the enhanced NO generation is dominant at the G2/M phase. Arsenite-induced NO generation is impaired in DSB repair-defective NBS cells, but not in NBS1-reconstituted NBS cells, suggesting NBS1 is required for effective NO generation. In summary, our study showed, for the first time, that arsenite-induced NO generation is cell-cycle- and NBS1-dependent.
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Affiliation(s)
- S S Yuan
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan 807, Republic of China
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Zhao S, Weng YC, Yuan SS, Lin YT, Hsu HC, Lin SC, Gerbino E, Song MH, Zdzienicka MZ, Gatti RA, Shay JW, Ziv Y, Shiloh Y, Lee EY. Functional link between ataxia-telangiectasia and Nijmegen breakage syndrome gene products. Nature 2000; 405:473-7. [PMID: 10839544 DOI: 10.1038/35013083] [Citation(s) in RCA: 392] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Ataxia-telangiectasia (A-T) and Nijmegen breakage syndrome (NBS) are recessive genetic disorders with susceptibility to cancer and similar cellular phenotypes. The protein product of the gene responsible for A-T, designated ATM, is a member of a family of kinases characterized by a carboxy-terminal phosphatidylinositol 3-kinase-like domain. The NBS1 protein is specifically mutated in patients with Nijmegen breakage syndrome and forms a complex with the DNA repair proteins Rad50 and Mrel1. Here we show that phosphorylation of NBS1, induced by ionizing radiation, requires catalytically active ATM. Complexes containing ATM and NBS1 exist in vivo in both untreated cells and cells treated with ionizing radiation. We have identified two residues of NBS1, Ser 278 and Ser 343 that are phosphorylated in vitro by ATM and whose modification in vivo is essential for the cellular response to DNA damage. This response includes S-phase checkpoint activation, formation of the NBS1/Mrel1/Rad50 nuclear foci and rescue of hypersensitivity to ionizing radiation. Together, these results demonstrate a biochemical link between cell-cycle checkpoints activated by DNA damage and DNA repair in two genetic diseases with overlapping phenotypes.
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Affiliation(s)
- S Zhao
- Department of Molecular Medicine/Institute of Biotechnology, The University of Texas Health Science Center at San Antonio, 78245-3207, USA
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Yuan SS, Lee SY, Chen G, Song M, Tomlinson GE, Lee EY. BRCA2 is required for ionizing radiation-induced assembly of Rad51 complex in vivo. Cancer Res 1999; 59:3547-51. [PMID: 10446958] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Mutations in BRCA1 and BRCA2 account for the majority of familial breast cancers. Cells with mutated BRCA1 or BRCA2 are hypersensitive to ionizing radiation (IR) and exhibit defective DNA repair. Both BRCA1 and BRCA2 have been reported to bind Rad51, a protein essential for homologous recombination and the recombinational repair of DNA double-strand breaks. In normal cells, a redistribution of Rad51 protein, manifested as formation of Rad51 nuclear foci, is seen upon IR treatment. Here we demonstrate that IR-induced Rad51 foci formation is aberrant in BRCA2- but not BRCA1-deficient tumor cells. In Capan-1 cells, which do not express functional BRCA2, there was little Rad51 foci formation in response to a wide range of radiation dosages. Moreover, forced expression of a fusion protein containing green fluorescent protein and the first Rad51-binding BRC repeat of BRCA2 in cells with wild-type BRCA2 rendered them hypersensitive to IR and cisplatin and compromised IR-induced Rad51 foci formation. In HCC1937 cells, which harbor mutation of BRCA1, IR-induced Rad51 foci were readily detected. This study suggests a requirement of BRCA2 protein for the IR-induced assembly of Rad51 complex in vivo.
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Affiliation(s)
- S S Yuan
- Department of Molecular Medicine/Institute of Biotechnology, University of Texas Health Science Center at San Antonio, 78245, USA
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48
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Chen G, Yuan SS, Liu W, Xu Y, Trujillo K, Song B, Cong F, Goff SP, Wu Y, Arlinghaus R, Baltimore D, Gasser PJ, Park MS, Sung P, Lee EY. Radiation-induced assembly of Rad51 and Rad52 recombination complex requires ATM and c-Abl. J Biol Chem 1999; 274:12748-52. [PMID: 10212258 DOI: 10.1074/jbc.274.18.12748] [Citation(s) in RCA: 210] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cells from individuals with the recessive cancer-prone disorder ataxia telangiectasia (A-T) are hypersensitive to ionizing radiation (I-R). ATM (mutated in A-T) is a protein kinase whose activity is stimulated by I-R. c-Abl, a nonreceptor tyrosine kinase, interacts with ATM and is activated by ATM following I-R. Rad51 is a homologue of bacterial RecA protein required for DNA recombination and repair. Here we demonstrate that there is an I-R-induced Rad51 tyrosine phosphorylation, and this induction is dependent on both ATM and c-Abl. ATM, c-Abl, and Rad51 can be co-immunoprecipitated from cell extracts. Consistent with the physical interaction, c-Abl phosphorylates Rad51 in vitro and in vivo. In assays using purified components, phosphorylation of Rad51 by c-Abl enhances complex formation between Rad51 and Rad52, which cooperates with Rad51 in recombination and repair. After I-R, an increase in association between Rad51 and Rad52 occurs in wild-type cells but not in cells with mutations that compromise ATM or c-Abl. Our data suggest signaling mediated through ATM, and c-Abl is required for the correct post-translational modification of Rad51, which is critical for the assembly of Rad51 repair protein complex following I-R.
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Affiliation(s)
- G Chen
- Department of Molecular Medicine/Institute of Biotechnology, The University of Texas Health Science Center at San Antonio, San Antonio, Texas 78245, USA
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Abstract
The tumor suppressor RB regulates diverse cellular processes such as G1/S transition, cell differentiation, and cell survival. Indeed, Rb-knockout mice exhibit phenotypes including ectopic mitosis, defective differentiation, and extensive apoptosis in the neurons. Using differential display, a novel gene, Rig-1, was isolated based on its elevated expression in the hindbrain and spinal cord of Rb-knockout embryos. The longest open reading frame of Rig-1 encoded a polypeptide that consists of a putative extracellular segment with five immunoglobulin-like domains and three fibronectin III-like domains, a putative transmembrane domain, and a distinct intracellular segment. The Rig-1 sequence was 40% identical to the recently identified roundabout protein. Consistent with the predicted transmembrane nature of the protein, Rig-1 protein was present in the membranous fraction. Antisera raised against the putative extracellular and intracellular segments of Rig-1 reacted with an approximately 210-kDa protein in mouse embryonic CNS. Rig-1 mRNA was transiently expressed in the embryonic hindbrain and spinal cord. Elevated levels of Rig-1 mRNA and protein were found in Rb-/- embryos. Ectopic expression of a transmembrane form of Rig-1, but not the secreted form, promoted neuronal cell entrance to S phase and repressed the expression of a marker of differentiated neuron, Talpha1 tubulin. Thus Rig-1, a possible distant relative of roundabout, may mediate some of the pleiotropic roles of RB in the developing neurons.
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Affiliation(s)
- S S Yuan
- Department of Molecular Medicine/Institute of Biotechnology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, 78245, USA
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50
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Abstract
Genetic studies in yeast have indicated a role of the RAD50 and MRE11 genes in homologous recombination, telomere length maintenance, and DNA repair processes. Here, we purify from nuclear extract of Raji cells a complex consisting of human Rad50, Mre11, and another protein factor with a size of about 95 kDa (p95), which is likely to be Nibrin, the protein encoded by the gene mutated in Nijmegen breakage syndrome. We show that the Rad50-Mre11-p95 complex possesses manganese-dependent single-stranded DNA endonuclease and 3' to 5' exonuclease activities. These nuclease activities are likely to be important for recombination, repair, and genomic stability.
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Affiliation(s)
- K M Trujillo
- Department of Molecular Medicine/Institute of Biotechnology, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78245-3207, USA
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