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Lin SR, Jiao YH, Cheng JJ, Liu LZ, Hu JP. [A comparative study of rigid gas permeable corneal contact lenses versus frame glasses for refractive correction of postoperative aphakic eyes after congenital cataract surgery in infants and children]. Zhonghua Yan Ke Za Zhi 2024; 60:343-351. [PMID: 38583058 DOI: 10.3760/cma.j.cn112142-20231211-00283] [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: 04/08/2024]
Abstract
Objective: The aim of this paper is to compare the refractive correction effects of rigid gas permeable contact lenses (RGPCL) and spectacle correction in children with aphakia after congenital cataract surgery. Methods: This was a prospective non-randomized controlled trial. Children with aphakic eyes after congenital cataract surgery, who underwent vision correction in the Strabismus and Pediatric Ophthalmology Clinic of Beijing Tongren Hospital affiliated with Capital Medical University from April 2012 to November 2019, were continuously collected. Those who voluntarily chose to wear RGPCL for refractive correction were included in the experimental group. Patients with monocular disease were in trial group 1, and patients with binocular disease were in trial group 2. Patients who chose to wear frame glasses for refractive correction were included in the control group. Patients with monocular disease were in control group 1, and patients with binocular disease were in control group 2. Regional origin, medical history, and family information were collected at the first diagnosis. During the follow-up, adverse reactions occurring during the process of wearing glasses were recorded. The Teller acuity card was used for visual examination to obtain the best-corrected visual acuity and convert it into the logarithm of the minimum resolution angle. The degree of nystagmus was determined according to the amplitude and frequency of nystagmus. Treatment cost, treatment compliance, and the reasons for adopting or not adopting RGPCL were analyzed through a questionnaire completed by the parents of children with RGPCL. Results: A total of 203 children (344 eyes) who underwent congenital cataract surgery were included, including 124 males (210 eyes) and 79 females (134 eyes). The age range was 3 to 36 months. There were 28 cases in the experimental group, including 19 cases in trial group 1 and 9 cases in trial group 2. There were 175 cases in the control group, including 43 cases in control group 1 and 132 cases in control group 2. Except for 6 months of age, the visual acuity of the experimental group was better than that of the control group, and the differences were statistically significant (P<0.05). The visual acuity of children in trial group 1 was better than that of children in control group 1 at the same age. Among them, at 12 months of age [1.54 (1.27, 1.97), 1.84 (0.97, 2.12)], 18 months of age [1.27 (0.97, 1.84), 1.84 (0.97, 2.12)], 24 months of age [1.54 (1.27, 1.84), 1.84 (0.97, 2.12)], and 30 months old [0.97 (0.66, 1.27), 1.54 (0.66, 2.12)], the difference was statistically significant (P<0.001). The visual acuity of children in trial group 2 was better than that in control group 2 at the same age. Among them, at 18 months old [1.27 (0.97, 1.54), 1.27 (0.66, 2.12)], 24 months old [0.97 (0.66, 1.27), 1.27 (0.66, 2.12)], and 30 months old [1.27 (0.66, 2.12)], the difference was statistically significant (P<0.05). The remission rate of nystagmus in the experimental group was 8/9 (8 cases), the remission rate of nystagmus in the control group was 34.40% (32 cases), and the exacerbation rate was 29.03% (27 cases). The average annual cost of the experimental group was 25 125 yuan, and that of the control group was 2 511 yuan. Conclusions: RGPCL is a well-tolerated, safe, and effective treatment for infants and young children. The visual acuity and degree of nystagmus were significantly improved in children who wore RGPCL for aphakia refractive correction after congenital cataract surgery compared with spectacle correction.
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Affiliation(s)
- S R Lin
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China Lin Sairou was a graduate student,and is now working at the Department of Ophthalmology, Beijing Tsinghua Changgung Hospital affiliated to Tsinghua University, Beijing 102218, China
| | - Y H Jiao
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China Lin Sairou was a graduate student,and is now working at the Department of Ophthalmology, Beijing Tsinghua Changgung Hospital affiliated to Tsinghua University, Beijing 102218, China
| | - J J Cheng
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China Lin Sairou was a graduate student,and is now working at the Department of Ophthalmology, Beijing Tsinghua Changgung Hospital affiliated to Tsinghua University, Beijing 102218, China
| | - L Z Liu
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China Lin Sairou was a graduate student,and is now working at the Department of Ophthalmology, Beijing Tsinghua Changgung Hospital affiliated to Tsinghua University, Beijing 102218, China
| | - J P Hu
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China Lin Sairou was a graduate student,and is now working at the Department of Ophthalmology, Beijing Tsinghua Changgung Hospital affiliated to Tsinghua University, Beijing 102218, China
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Yuan XL, Wu YB, Song XL, Chen Y, Lu Y, Lai XY, Shi JM, Liu LZ, Zhao YM, Yu J, Yang LX, Lan JP, Cai Z, Huang H, Luo Y. [Efficacy and prognostic factors of allogeneic hematopoietic stem cell transplantation in the treatment of secondary acute myeloid leukemia]. Zhonghua Xue Ye Xue Za Zhi 2024; 45:41-47. [PMID: 38527837 DOI: 10.3760/cma.j.cn121090-20230929-00151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Objective: To evaluate the efficacy and prognostic factors of allogeneic hematopoietic stem cell transplantation (allo-HSCT) in patients with secondary acute myeloid leukemia (sAML) . Methods: In this multicenter, retrospective clinical study, adult patients aged ≥18 years who underwent allo-HSCT for sAML at four centers of the Zhejiang Hematopoietic Stem Cell Transplantation Collaborative Group from January 2014 to November 2022 were included, and the efficacy and prognostic factors of allo-HSCT were analyzed. Results: A total of 95 patients were enrolled; 66 (69.5%) had myelodysplastic syndrome-acute myeloid leukemia (MDS-AML) , 4 (4.2%) had MDS/MPN-AML, and 25 (26.3%) had therapy-related AML (tAML) . The 3-year CIR, LFS, and overall survival (OS) rates were 18.6% (95% CI 10.2%-27.0%) , 70.6% (95% CI 60.8%-80.4%) , and 73.3% (95% CI 63.9%-82.7%) , respectively. The 3-year CIRs of the M-AML group (including MDS-AML and MDS/MPN-AML) and the tAML group were 20.0% and 16.4%, respectively (P=0.430) . The 3-year LFSs were 68.3% and 75.4%, respectively (P=0.176) . The 3-year OS rates were 69.7% and 75.4%, respectively (P=0.233) . The 3-year CIRs of the groups with and without TP53 mutations were 60.0% and 13.7%, respectively (P=0.003) ; the 3-year LFSs were 20.0% and 76.5%, respectively (P=0.002) ; and the 3-year OS rates were 40.0% and 77.6%, respectively (P=0.002) . According to European LeukmiaNet 2022 (ELN2022) risk stratification, the 3-year CIRs of patients in the low-, intermediate-, and high-risk groups were 8.3%, 17.8%, and 22.6%, respectively (P=0.639) . The three-year LFSs were 91.7%, 69.5%, and 65.6%, respectively (P=0.268) . The 3-year OS rates were 91.7%, 71.4%, and 70.1%, respectively (P=0.314) . Multivariate analysis revealed that advanced disease at allo-HSCT and TP53 mutations were independent risk factors for CIR, LFS, and OS. Conclusion: There was no significant difference in the prognosis of patients who underwent allo-HSCT among the MDS-AML, MDS/MPN-AML, and tAML groups. Advanced disease at transplantation and TP53 mutations were poor prognostic factors. ELN2022 risk stratification had limited value for predicting the prognosis of patients with sAML following allo-HSCT.
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Affiliation(s)
- X L Yuan
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - Y B Wu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - X L Song
- Zhejiang Provincial People's Hospital, Hangzhou 310014, China
| | - Y Chen
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Y Lu
- People's Hospital Affiliated to Ningbo University, Ningbo 315000, China
| | - X Y Lai
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - J M Shi
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - L Z Liu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - Y M Zhao
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - J Yu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - L X Yang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - J P Lan
- Zhejiang Provincial People's Hospital, Hangzhou 310014, China
| | - Z Cai
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - H Huang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
| | - Y Luo
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine; Liangzhu Laboratory; Institute of Hematology, Zhejiang University; Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou 310003, China
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Wang SX, Yang Y, Xie H, Yang X, Liu Z, Li H, Huang W, Luo WJ, Lei Y, Sun Y, Ma J, Chen Y, Liu LZ, Mao YP. Delta-Radiomics Guides Adaptive De-Intensification after Induction Chemotherapy in Locoregionally Advanced Nasopharyngeal Carcinoma in the IMRT Era. Int J Radiat Oncol Biol Phys 2023; 117:S152-S153. [PMID: 37784386 DOI: 10.1016/j.ijrobp.2023.06.574] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) In the setting of intensity-modulated radiotherapy (IMRT) and induction chemotherapy (IC), the benefits from concurrent chemotherapy remained controversial for locoregionally advanced nasopharyngeal carcinoma (LANPC). This study aimed to construct a delta-radiomics model for benefit prediction and patient selection for omitting concurrent chemotherapy. MATERIALS/METHODS Between December 2009 and December 2015, a total of 718 patients with LANPC treated with IC+IMRT or IC+concurrent chemoradiotherapy (CCRT) were retrospectively enrolled and randomly assigned to a training set (n = 503) and a validation set (n = 215). Radiomic features were extracted from magnetic resonance images of pre-IC and post-IC. Interclass correlation coefficients and Pearson correlation coefficients were calculated to select robust radiomic features. After univariate Cox analysis, a delta-radiomics signature was built using the LASSO-Cox regression. A nomogram incorporating the delta-radiomics signature and clinical prognostic factors was then developed and evaluated for calibration and discrimination. Risk stratification by the nomogram was evaluated by Kaplan-Meier methods. The primary outcome was overall survival (OS). RESULTS The delta-radiomics signature, which comprised 19 selected features, was independently associated with prognosis. It yielded an area under the receiver operating characteristic curve (AUC) of 0.77 (95% confidence interval [CI] 0.71 to 0.82) for the training set and 0.71 (95% CI 0.61 to 0.81) for the validation set. The nomogram composed of the delta-radiomic signature, age, T category, N category, pre-treatment Epstein-Barr virus DNA, and treatment showed great calibration and discrimination performance with an AUC of 0.80 (95% CI 0.75 to 0.85) for the training set and 0.75 (95% CI 0.64 to 0.85) for the validation set. Risk stratification by the nomogram excluding the treatment variable resulted in two risk groups with distinct OS. Significant better outcomes were observed in the high-risk patients with IC+CCRT compared to those with IC+IMRT (5-year OS: 73.8% vs. 61.4% in the training set and 85.8% vs. 65.6% in the validation set; all log-rank p < 0.05), while comparable outcomes between IC+CCRT and IC+IMRT were shown for the low-risk patients (95.8% vs. 95.8% in the training set and 92.2% vs. 88.3% in the validation set; all log-rank p > 0.05). CONCLUSION The delta-radiomics signature was identified as an independent indicator of LANPC. Integrating clinical predictors with the delta-radiomics signature, the radiomics-based nomogram could predict individual's survival outcomes and benefits from concurrent chemotherapy after IC for LANPC. Low-risk patients with LANPC determined by the nomogram may be potential candidates for omission of concurrent chemotherapy following IC in the IMRT era.
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Affiliation(s)
- S X Wang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Y Yang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - H Xie
- Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - X Yang
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, Guangdong, 510060, Guangzhou, China
| | - Z Liu
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - H Li
- Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - W Huang
- Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - W J Luo
- Department of Medical Oncology, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Y Lei
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Y Sun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - J Ma
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Y Chen
- Department of head and neck surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - L Z Liu
- Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y P Mao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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Yuan XL, Lai XY, Wu YB, Yang LX, Shi JM, Liu LZ, Yu J, Zhao YM, Zheng WY, He JS, Sun J, Wu WJ, Zhao Y, Ye YS, Cai Z, Huang H, Luo Y. A novel risk model for predicting early relapse in acute myeloid leukemia patients undergoing allogeneic hematopoietic stem-cell transplantation. Bone Marrow Transplant 2023; 58:801-810. [PMID: 37072477 DOI: 10.1038/s41409-023-01979-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 03/22/2023] [Accepted: 03/28/2023] [Indexed: 04/20/2023]
Abstract
Relapse remains the leading cause of death in acute myeloid leukemia (AML) patients following allogeneic hematopoietic stem-cell transplantation (allo-HSCT), limiting the efficacy of allo-HSCT. Thus, the ability to identify high-risk patients in a manner that permits early intervention has the potential to improve survival outcomes. We retrospectively enrolled 414 younger patients (aged 14-60 years) with AML who received allo-HSCT between January 2014 and May 2020. From June 2020 to June 2021, 110 consecutive patients were included prospectively in the validation cohort. The primary outcome was early relapse (relapse within 1 year). The cumulative incidence of early relapse after allo-HSCT was 11.8%. The overall survival rate for patients who relapsed within 1-year was 4.1% at 3 years after relapse. After multivariable adjustment, statistically significant associations between primary resistance, pre-transplantation measurable residual disease, DNMT3A mutation, or white blood cell count at diagnosis and early relapse were observed. An early relapse prediction model was developed based on these factors and the model performed well. Patients deemed to have a high risk or a low risk of early relapse had early relapse rates of 26.2% and 6.8%, respectively (P < 0.001). The prediction model could be used to help identify patients at risk for early relapse and to guide personalized relapse prevention.
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Affiliation(s)
- Xiao-Lin Yuan
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Xiao-Yu Lai
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Yi-Bo Wu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Lu-Xin Yang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Ji-Min Shi
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Li-Zhen Liu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Jian Yu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Yan-Min Zhao
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Wei-Yan Zheng
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Jing-Song He
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Jie Sun
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Wen-Jun Wu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Yi Zhao
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Yi-Shan Ye
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - Zhen Cai
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China
- Institute of Hematology, Zhejiang University, Hangzhou, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China
| | - He Huang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China.
- Institute of Hematology, Zhejiang University, Hangzhou, China.
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China.
| | - Yi Luo
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China.
- Institute of Hematology, Zhejiang University, Hangzhou, China.
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, China.
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Peng LH, Chen YJ, Yang SY, Wang GJ, Gu YH, Shen BL, Liu LZ, Xian RX, Li XH, Li SY, Dai ZN, Xu FP, Hu JR, Wang F. Viral contamination on the surfaces of the personal protective equipment among health care professionals working in COVID-19 wards: A single-center prospective, observational study. Am J Infect Control 2023; 51:276-281. [PMID: 36375705 PMCID: PMC9652000 DOI: 10.1016/j.ajic.2022.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/18/2022] [Accepted: 10/22/2022] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To evaluate potential viral contamination on the surfaces of personal protective equipment (PPE) in COVID-19 wards. METHODS Face shields, gloves, the chest area of PPE and shoe soles were sampled at different time points. The samples were tested for the presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) by PCR, and the cycle threshold (CT) values were recorded. RESULTS The positive rate was 74.7% (239/320) for all PPE specimens. The CT values of the samples were ranked in the following order: face shields > chests > gloves > shoe soles (37.08±1.38, 35.48±2.02, 34.17±1.91 and 33.52±3.16, respectively; P for trend < .001). After disinfection, the CT values of shoe soles decreased compared with before disinfection (32.78±3.47 vs. 34.3±2.61, P = .037), whereas no significant effect of disinfection on the CT values of face shields, chests and gloves was observed. After disinfection, the CT values of specimens collected from shoe soles gradually increased; before disinfection, the CT values of shoe sole specimens were all less than 35. CONCLUSIONS SARS-CoV-2 can attach to the surfaces of the PPE of healthcare professionals in COVID-19 wards, especially the shoe soles and undisinfected gloves. Shoe soles had the highest SARS-CoV-2 loads among all tested PPE items.
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Affiliation(s)
- Li-Hao Peng
- Department of Hospital Infection Management, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Ya-Juan Chen
- Department of Critical Care Medicine, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China; Department of Nursing, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Shi-Yi Yang
- Department of Critical Care Medicine, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China; Department of Nursing, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Guo-Jiang Wang
- Department of Neurology, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Yan-Hua Gu
- Department of Nursing, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Bao-Liang Shen
- Department of Orthopedics, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Li-Zhen Liu
- Department of Interventional, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Rui-Xing Xian
- Department of Gynecology and Obstetrics, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Xian-Hua Li
- Department of Nursing, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Shu-Yun Li
- Department of Nursing, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Zhen-Ni Dai
- Department of Nursing, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Fei-Peng Xu
- Department of Traditional Chinese Medicine, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Jian-Rong Hu
- Department of Pulmonary and Critical Care Medicine, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China.
| | - Fei Wang
- Department of Critical Care Medicine, Jiading District Central Hospital Affiliated Shanghai University of Medicine & Health Sciences, Shanghai, China.
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Yang YF, Jin B, Liu LZ, Fan HY, Yu XJ, Wang WW, Li LX, Lyu TZ, Jiang T. [Changes of brain network characteristics in patients with depression before and after precise repetitive transcranial magnetic stimulation]. Zhonghua Yi Xue Za Zhi 2022; 102:3449-3456. [PMID: 36396361 DOI: 10.3760/cma.j.cn112137-20220415-00813] [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: 06/16/2023]
Abstract
Objective: To investigate the changes of brain network characteristics in patients with depression before and after precise repetitive transcranial magnetic stimulation (rTMS) treatment. Methods: Patients with depression in the Second Affiliated Hospital of Xinxiang Medical University and healthy volunteers in the community of Xinxiang city from February 2018 to March 2019 were simultaneously recruited. The left dorsolateral prefrontal cortex was precisely selected as the stimulation target through the latest Human Brainnetome Atlas, and the near infrared navigation was used to achieve accurate brain stimulation treatment in combination with the structural magnetic resonance data. Moreover, functional connectivity was analyzed before and after rTMS treatment in significantly altered brain areas of patients with depression. Results: Nineteen patients (11 males and 8 females) with depression were included, aged (34±11) years. Meanwhile, 22 healthy controls (9 males and 13 females), aged (30±9) years, were also enrolled. Functional connectivity of insular cortex was decreased in depression patients when the insula was analyzed as the target area (P<0.05). The functional connection from insula to middle frontal lobe and superior parietal lobe in patients with depression decreased before rTMS treatment (P<0.05), but increased after rTMS treatment (P<0.05). The functional connection between dIg_L of the insula and the right middle prefrontal lobe was correlated with Beck Anxiety Index (BAI) before rTMS treatment and Beck Depression Index (BDI) after rTMS treatment (r=0.737, P=0.003; r=0.696, P=0.005). Conclusions: Abnormal functional connectivity of insula may be the brain imaging mechanism of rTMS treatment. Precise brain region selection based on Human Brainnetome Atlas provides a new technical method for clinical rTMS precision treatment.
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Affiliation(s)
- Y F Yang
- Department of Psychiatry, Henan Key Laboratory of Biological Psychiatry, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang 453002, China
| | - B Jin
- Department of Psychiatry, Henan Key Laboratory of Biological Psychiatry, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang 453002, China
| | - L Z Liu
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China
| | - H Y Fan
- Brainnetome Center and Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - X J Yu
- Department of Psychiatry, Henan Key Laboratory of Biological Psychiatry, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang 453002, China
| | - W W Wang
- Department of Psychiatry, Henan Key Laboratory of Biological Psychiatry, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang 453002, China
| | - L X Li
- Department of Psychiatry, Henan Key Laboratory of Biological Psychiatry, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang 453002, China
| | - T Z Lyu
- Department of Psychiatry, Henan Key Laboratory of Biological Psychiatry, the Second Affiliated Hospital of Xinxiang Medical University, Xinxiang 453002, China
| | - Tianzai Jiang
- Brainnetome Center and Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
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Hao X, Liu Z, Qin J, Jin X, Liu LZ, Zhai H, Yang W, Yan ZC, Feng Y. Quinoline-cored Poly(Aryl Ether) Dendritic Organogels with Multiple Stimuli-Responsive and Adsorptive Properties. Chem Asian J 2021; 17:e202101135. [PMID: 34729930 DOI: 10.1002/asia.202101135] [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: 09/30/2021] [Revised: 11/02/2021] [Indexed: 11/06/2022]
Abstract
Functional supramolecular gel materials have potential applications in sensors, optical switches, artificial antennae, drug delivery and so on. In this paper, quinoline-cored poly(aryl ether) dendritic organogelators were designed, synthesized and fully characterized. The gelation behaviour of the dendritic organogelator was tested in organic solvents, mixed solvents and ionic liquids. The dendron Q-G1 was found to be an efficient and versatile organogelator toward various apolar and polar organic solvents with the critical gelation concentrations (CGCs) approaching 1.2×10-2 mol/L, indicating one dendritic organogelator could immobilize 1.2×103 solvent molecules in the organogel network. Interestingly, these dendrons exhibited excellent gel formation in ionic liquids. Notably, these dendritic organogels were found to display multiple stimuli-responsive properties toward external stimuli including heat, ultrasound and shear stress, with a reversible sol-gel phase transition. In addition, the dendritic organogel could effectively adsorb heavy metals and organic dyes. The removal rate of Pb2+ was up to 20% and the adsorption rate for Rhodamine B was as high as 89%.
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Affiliation(s)
- Xiaoyu Hao
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, 037009, P. R. China
| | - Zhixiong Liu
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, 037009, P. R. China
| | - Jun Qin
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, 037009, P. R. China
| | - Xinyi Jin
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, 037009, P. R. China
| | - Li-Zhen Liu
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, 037009, P. R. China
| | - Hong Zhai
- School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, 037009, P. R. China
| | - Weifa Yang
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P. R. China
| | - Zhi-Chao Yan
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P. R. China
| | - Yu Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), University of Chinese Academy of Sciences, Beijing, 100190, P. R. China
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Wu SY, Qian RL, Ma CL, Shan Y, Wu YJ, Wu XY, Zhang JL, Zhu XB, Ji HT, Qu CY, Hou F, Liu LZ. Photoluminescence and magnetism integrated multifunctional black phosphorus probes through controllable PO bond orbital hybridization. Phys Chem Chem Phys 2021; 23:22476-22482. [PMID: 34586129 DOI: 10.1039/d1cp03155d] [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: 11/21/2022]
Abstract
Biological probes with integrated photoluminescence and magnetism characteristics play a critical role in modern clinical diagnosis and surgical protocols combining fluorescence optical imaging (FOI) with magnetic resonance imaging (MRI) technology. However, traditional magnetic semiconductors can easily generate a spin splitting at the Fermi level and half-metallic electronic occupation, which will sharply reduce the radiation recombination efficiency of photogenerated carriers. To overcome this intrinsic contradiction, we propose a controllable oxidation strategy to introduce some particular PO bonds into black phosphorus nanosheets, in which the p orbital hybridization between P and O atoms not only provides some carrier recombination centers but also leads to a room-temperature spin polarization. As a result, the coexistence of photoluminescence and magnetism is realized in multifunctional black phosphorus probes with excellent biocompatibility. This work provides a new insight into integrating photoluminescence and magnetism together by intriguing atomic orbital hybridization.
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Affiliation(s)
- S Y Wu
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - R L Qian
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - C L Ma
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Y Shan
- Key Laboratory of Advanced Functional Materials of Nanjing, Nanjing Xiaozhuang University, Nanjing 211171, China.
| | - Y J Wu
- Department of Neurology, Suzhou Science and Technology Town Hospital affiliated to Nanjing Medical University, Suzhou, 215009, China
| | - X Y Wu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China.
| | - J L Zhang
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - X B Zhu
- School of Mechano-Electronic Engineering, Suzhou Vocational University, Suzhou, Jiangsu 215104, China
| | - H T Ji
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - C Y Qu
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - F Hou
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - L Z Liu
- National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, China
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Wu MY, Chen L, Pang DB, Liu B, Liu LZ, Qiu KY, Li XB. [Changes of the concentrations and stoichiometry of carbon, nitrogen and phosphorus in soil aggregates along different altitudes of Helan Mountains, Northwest China.]. Ying Yong Sheng Tai Xue Bao 2021; 32:1241-1249. [PMID: 33899392 DOI: 10.13287/j.1001-9332.202104.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Exploring the distribution patterns of soil nutrients in aggregates of forests along different altitudes in arid and semi-arid areas can provide a theoretical basis for understanding nutrient cycling in vulnerable mountain ecosystems. In this study, we analyzed the distribution and stability of aggregates in the 0-20 cm soil layer along different altitudes (1380-2438 m) of Helan Mountains and measured the storage and stoichiometric characteristics of organic carbon, total nitrogen, and total phosphorus in soil aggregates. Results showed that the main soil aggregates of Helan Mountains changed from micro-aggregates (0.25-0.053 mm) to macro-aggregates (>0.25 mm) with increa-sing elevation. The mean weight diameter (MWD) and geometric mean diameter (GMD) of soil aggregates in high altitude (2139-2248 m) were significantly higher than those in low altitude (1380-1650 m). The content and storage of organic carbon and total nitrogen in soil aggregates of different size fractions were positively correlated with altitude, while the content of total phosphorus fluctuated with the increase in elevation and distributed uniformly in aggregates. Macro-aggregates and micro-aggregates had more contribution to soil nutrient storage than the silt and clay fractions, indicating that the proportion of aggregates with different size fractions was the key factor affecting soil nutrient storage and that macro-aggregates and micro-aggregates were the main carriers of soil nutrients. Moreover, the C:N ratio in aggregates of different size fractions did not change across different altitudes, whereas the C:P and N:P ratio were higher at mid and high elevations than those at low elevations. Our results indicated that the mid and high elevations of Helan Mountains had higher nutrient storage in the surface soil layer, and that higher content of macro-aggregates and micro-aggregates would help to retain organic carbon and nutrients in the soil. Soil nitrogen limitation was strong at low altitude in our study, suggesting that the appropriate amount of nitrogen addition in low altitudes could improve total nitrogen status during forest cultivation.
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Affiliation(s)
- Meng-Yao Wu
- Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ningxia University, Yinchuan 750021, China
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China
| | - Lin Chen
- Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ningxia University, Yinchuan 750021, China
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China
| | - Dan-Bo Pang
- Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ningxia University, Yinchuan 750021, China
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China
| | - Bo Liu
- Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ningxia University, Yinchuan 750021, China
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China
| | - Li-Zhen Liu
- Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ningxia University, Yinchuan 750021, China
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China
| | - Kai-Yang Qiu
- Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ningxia University, Yinchuan 750021, China
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China
| | - Xue-Bin Li
- Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China, Ningxia University, Yinchuan 750021, China
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China
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He Y, Gong R, Peng KW, Liu LZ, Sun LY, Wang HY. Lymphocyte-to-C-reactive protein ratio is a potential new prognostic biomarker for patients with lung cancer. Biomark Med 2020; 14:717-726. [DOI: 10.2217/bmm-2019-0452] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Aim: To compare and evaluate the prognostic value of various pretreatment combinations of inflammatory factors in patients with lung cancer (LC). Materials & methods: This study enrolled 1005 patients with LC and categorized into a discovery cohort and a validation cohort. Results: A combination of Lymphocyte-to-C-reactive protein levels (LCR) demonstrated the highest correlation with poor first-line progression-free survival (PFS) and overall survival (OS) (p < 0.05), but not disease-free survival (p > 0.05) compared with other parameters in LC patients. Decreased preoperative LCR was an independent prognostic factor for first-line PFS and OS (p < 0.05), but not disease-free survival (p > 0.05) in patients. Conclusion: Pretreatment LCR is a promising biomarker for first-line PFS and OS in patients with LC.
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Affiliation(s)
- Yuan He
- Department of Ultrasound & Electrocardiogram, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, PR China
| | - Rui Gong
- Department of Healthcare, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, PR China
| | - Kun-Wei Peng
- Department of VIP region, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, PR China
| | - Li-Zhen Liu
- Department of Ultrasound & Electrocardiogram, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, PR China
| | - Li-Yue Sun
- Department of Molecular Diagnostics, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, PR China
| | - Hai-Yun Wang
- Department of Molecular Diagnostics, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, PR China
- Heart Center, Institute of Pediatrics, Guangzhou Women & Children's Medical Center, Guangzhou, PR China
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Jian J, Li S, Liu LZ, Zhen L, Yao L, Gan LH, Huang YQ, Fang N. XPD inhibits cell growth and invasion and enhances chemosensitivity in esophageal squamous cell carcinoma by regulating the PI3K/AKT signaling pathway. Int J Mol Med 2020; 46:201-210. [PMID: 32377720 PMCID: PMC7255471 DOI: 10.3892/ijmm.2020.4593] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/13/2020] [Indexed: 12/24/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a lethal disease due to its high aggressiveness. The aim of the present study was to investigate the role of xeroderma pigmentosum complementation group D (XPD) in the growth and invasion of ESCC and to elucidate the potential underlying molecular mechanisms. Western blot analysis and RT-qPCR were used to detect the expression level of XPD in ESCC tissue samples and adjacent normal esophageal tissue samples. The pEGFP-N2/XPD plasmid was transfected into human ESCC cell lines (EC9706 and EC109). The proliferation, apoptosis, migration and invasion of EC9706 or EC109 cells were assessed following transfection with the XPD overexpression plasmid. The chemosensitivity of EC9706 or EC109 cells to cisplatin or fluorouracil was evaluated by CCK-8 assay. The expression levels of phosphoinositide 3-kinase (PI3K)/AKT, nuclear factor (NF)-κB, Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) and mitogen-activated protein kinase (MAPK) signaling pathway-related genes were detected by RT-qPCR and western blot analysis. The results demonstrated that the expression level of XPD was markedly lower in ESCC tissue samples than in adjacent normal esophageal tissue samples. The pEGFP-N2/XPD plasmid was successfully transfected into EC9706 or EC109 cells, inducing XPD overexpression. A High XPD expression markedly suppressed cell proliferation, migration and invasion, and increased the apoptotic rate of EC9706 and EC109 cells. Furthermore, the overexpression of XPD significantly increased the chemosensitivity of EC9706 and EC109 cells to cisplatin or fluorouracil. Following XPD overexpression, the expression levels of PI3K, p-AKT, c-Myc, Cyclin D1, Bcl-2, vascular endothelial growth factor (VEGF) and matrix metalloproteinase (MMP)-9 were markedly downregulated, while the expression level of p21 was markedly upregulated. On the whole, the findings of the present study demonstrate that XPD inhibits the growth and invasion of EC9706 and EC109 cells, whilst also enhancing the chemosensitivity of EC9706 and EC109 cells to cisplatin or fluorouracil by regulating the PI3K/AKT signaling pathway. XPD may thus be an underlying target for ESCC treatment and drug resistance.
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Affiliation(s)
- Jie Jian
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Shuang Li
- Department of Geriatrics and General Medicine, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Li-Zhen Liu
- Department of Oncology, Jiading District Central Hospital Affiliated Shanghai University of Medicine and Health Sciences, Shanghai 201800, P.R. China
| | - Li Zhen
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Ling Yao
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Li-Hong Gan
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Ya-Qing Huang
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Nian Fang
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
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Huang DH, Jian J, Li S, Zhang Y, Liu LZ. TPX2 silencing exerts anti‑tumor effects on hepatocellular carcinoma by regulating the PI3K/AKT signaling pathway. Int J Mol Med 2019; 44:2113-2122. [PMID: 31638175 PMCID: PMC6844623 DOI: 10.3892/ijmm.2019.4371] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 06/10/2019] [Accepted: 09/11/2019] [Indexed: 12/24/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the primary causes of cancer-associated deaths worldwide. Current treatment methods include surgical resection, chemotherapy and radiotherapy; however the curative rate remains low, thus novel treatments are required. The aim of the present study was to investigate the role of targeting protein for Xenopus kinesin-like protein 2 (TPX2) in the growth of HCC and its underlying molecular mechanism. Immunohistochemistry staining, reverse transcription-quantitative (RT-q)PCR and western blotting were used to detect the expression of TPX2 mRNA and protein in liver cancer tissue samples, adjacent normal liver tissue samples, and the HCC cell lines Huh7, Hep3B, PLC/PRF/5 and MHCC97-H. The recombinant plasmid pMagic4.1-shRNA-TPX2 was constructed and transfected into Huh7 and Hep3B HCC cells to silence TPX2 expression. The proliferation, apoptosis, migration and invasion of Huh7 cells and Hep3B cells were evaluated before and after TPX2 silencing. The mRNA and protein expression levels of multiple signaling pathway-associated genes were detected by RT-qPCR and western blotting. The expression levels of TPX2 mRNA and protein were significantly higher in HCC tissue samples compared with adjacent normal liver tissue sample. TPX2 mRNA and protein expression levels were detected in the different HCC cell lines. The recombinant plasmid pMagic4.1-shRNA-TPX2 was successfully transfected into Huh7 and Hep3B cells, resulting in TPX2 silencing. TPX2 knockdown significantly reduced cell proliferation, cell migration and cell invasion of Huh7 and Hep3B cells, whilst also increasing the rate of apoptosis in these cells. Following TPX2 silencing, the expression levels of PI3K, phospho-AKT, Bcl-2, c-Myc and Cyclin D1 were significantly decreased, whereas the expression levels of P21 and P27 were significantly increased. In conclusion, TPX2 may suppress the growth of HCC by regulating the PI3K/AKT signaling pathway and thus, TPX2 may be a potential target for the treatment of liver cancer.
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Affiliation(s)
- Dan-Hong Huang
- Department of Clinical Laboratory, Jiading District Central Hospital of Shanghai University of Medicine and Health Sciences, Shanghai 201800, P.R. China
| | - Jie Jian
- Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Shuang Li
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
| | - Yan Zhang
- Department of Oncology, Jiading District Central Hospital of Shanghai University of Medicine and Health Sciences, Shanghai 201800, P.R. China
| | - Li-Zhen Liu
- Department of Oncology, Jiading District Central Hospital of Shanghai University of Medicine and Health Sciences, Shanghai 201800, P.R. China
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Wang XH, Zhang Y, Liu LZ, Shang CG. [Effects of metformin and adiponectin on endometrial cancer cells growth]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:767-773. [PMID: 30337733] [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: 06/08/2023]
Abstract
OBJECTIVE To determine the effect of metformin and adiponectin on the proliferation of EC cells and the relationship between metformin and adiponectin. METHODS The proliferation impact of different concentrations of metformin and adiponectin on two types of EC cells ishikawa (IK) and HEC-1B was confirmed by CCK-8 method. qRT-PCR and Western blot were used to detect the effect of different concentrations of metformin on the changes of adiponectin receptors (AdipoR1 and AdipoR2) of the EC cells both in mRNA and protein level and the role of compound C, an adenosine monophosphate-activated protein kinase (AMPK) inhibitor, on the above effects. RESULTS (1) Both metformin and adiponectin could significantly promote the proliferation of endometrial cancer (EC) cells in a time and concentration dependent manner (P<0.05).(2)Metformin and adiponectin had synergy anti-proliferative effect on EC cells and the combination index (CI) value of IK cells was 0.906 34 and of HEC-1B cells was 0.827 65. (3)qRT-PCR was used to detect the mRNA levels of AdipoR1 and AdipoR2 after 5 mmol/L and 10 mmol/L metformin, respectively, stimulating IK and HEC-1B cells for 48 hours and the mRNA expressions of AdipoR1 and AdipoR2 were significantly increased when compared with the control group (0 mmol/L)(IK: AdipoR1 of 5 mmol/L and 10 mmol/L group: P<0.001,AdipoR2 of 5 mmol/L group: P<0.001; HEC-1B: AdipoR1 of 5 mmol/L group: P<0.001, 10 mmol/L group: P=0.023, AdipoR2 of 5 mmol/L group: P<0.001, 10 mmol/L group: P=0.024). When combined with compound C, the RNA levels of AdipoR1 and AdipoR2 were not different compared with the control group (0 mmol/L, P>0.05). (4) Western blot was used to detect the protein levels of AdipoR1 and AdipoR2 after 5 mmol/L and 10 mmol/L metformin, stimulating IK and HEC-1B cells for 48 hours and the protein level was significantly increased when compared with the control group (0 mmol/L)(IK: AdipoR1 of 5 mmol/L group: P=0.04, 10 mmol/L group: P=0.033, AdipoR2 of 5 mmol/L group: P=0.044, 10 mmol/L group: P=0.046; HEC-1B: AdipoR1 of 5 mmol/L group: P=0.04, 10 mmol/L group: P=0.049, AdipoR2 of 5 mmol/L group: P=0.043, 10 mmol/L group: P=0.035). When combined with compound C,the protein levels of AdipoR1 and AdipoR2 were not different compared with the control group (0 mmol/L, P>0.05). CONCLUSION We find that metformin and adiponectin have synergy anti-proliferative effect on EC cells. Besides, metformin can increase adiponectin receptors expressions of EC cells both in mRNA and protein levels and this effect is accomplished by the activation of AMPK signaling pathway.
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Affiliation(s)
- X H Wang
- Department of Obstetrics and Gynecology,Peking University First Hospital, Beijing 100034, China
| | - Y Zhang
- Department of Obstetrics and Gynecology,Peking University First Hospital, Beijing 100034, China
| | - L Z Liu
- Department of Obstetrics and Gynecology,Peking University First Hospital, Beijing 100034, China
| | - C G Shang
- Department of Obstetrics and Gynecology,Peking University First Hospital, Beijing 100034, China
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Tong RH, Chen ZY, Jiang ZH, Zhang XL, Cheng ZF, Liu LZ, Li W, Yan W, Wei YN, Lin ZF, Huang Y, Yang ZJ. Measurement of the toroidal radiation asymmetry during massive gas injection triggered disruptions on J-TEXT. Rev Sci Instrum 2018; 89:10E113. [PMID: 30399685 DOI: 10.1063/1.5035187] [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] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 06/21/2018] [Indexed: 06/08/2023]
Abstract
Disruptions have the potential to cause severe damage to large tokamaks like ITER. The mitigation of disruption damage is one of the essential issues for the tokamak. Massive gas injection (MGI) is a technique in which large amounts of a noble gas are injected into the plasma in order to safely radiate the plasma energy evenly over the entire plasma-facing wall. However, the radiated energy during the disruption triggered by massive gas injection is found to be toroidally asymmetric. In order to investigate the spatial and temporal structures of the radiation asymmetry, the radiated power diagnostics for the J-TEXT tokamak have been upgraded. The multi-channel arrays of absolute extreme ultraviolet photodiodes have been upgraded at four different toroidal positions to investigate the radiation asymmetries during massive gas injection. It is found that the toroidal asymmetry is associated with plasma properties and MGI induced MHD activities.
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Affiliation(s)
- R H Tong
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z Y Chen
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z H Jiang
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - X L Zhang
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z F Cheng
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - L Z Liu
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - W Li
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - W Yan
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y N Wei
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z F Lin
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Y Huang
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Z J Yang
- International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Ding L, Sun Q, Tan KT, Chien W, Mayakonda A, Lin D, Loh X, Xiao J, Meggendorfer M, Alpermann T, Garg M, Lim SL, Madan V, Hattori N, Nagata Y, Miyano S, Juh AYE, Hou HA, Jiang YY, Jiang YY, Takao S, Liu LZ, Tan SZ, Tan SZ, Lill M, Hayashi M, Kinoshita A, Kantarjian HM, Kornblau SM, Ogawa S, Haferlach T, Yang H, Koeffler HP. Abstract 2450: Mutational profiling of MLL-PTD acute myeloid leukemia. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-2450] [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]
Abstract
Abstract
In this study, we performed whole-exome and targeted sequencing on 85 MLL-PTD AML patients. These AMLs have oncogenic tandem duplication of the MLL gene. At least one well-known oncogenic driver mutation was identified in over 90% of the MLL-PTD patients. In line with earlier sequencing studies of other AML subtypes and the TCGA-AML-sequencing project, DNMT3A was the most often mutated epigenetic regulator (25%); IDH1/2 hotspot mutations were identified in 31% of patients. TET family was the third most prominently mutated epigenetic regulator (TET1 (5%), TET2 (16.3%). Mutations of epigenetic regulators also occurred in polycomb-associated proteins (EZH2, ASXL family members), chromatin remodelers (ARID2, ARID1A), genes associated with histone acetylation (CREBBP, EP300, KAT6A, KAT6B) and histone methylation (MLL2, MLL3).
Proliferation-related pathway was extensively mutated, with 54 of 80 MLL-PTD patients (67.5%) carrying at least one mutation of proliferative genes. Specifically, FLT3 mutations were found in 46% of patient samples. Notably, some FLT3-ITD patients had more than one type of internal tandem duplication (ITD) insertion, probably reflecting existence of multiple subclones in these leukemias.
We found highly prevalent mutations of cohesin genes: STAG2 (16%), SMC1A (6%), SMC3 (1%), RAD21 (1%) and CTCF (6%). Cohesin pathway is more frequently mutated in MLL-PTD patients (26%) than the AML samples from either TCGA (13%) or a meta-analysis of 1000 AML (9.1%). Remarkably, an extremely high proportion of the mutations had a strong tendency to disrupt the coding sequence in STAG2, emphasizing their crucial tumor-suppressor role in this AML subtype (16% in MLL-PTD vs 3% in TCGA-AML.
RNA processing pathway was also strikingly altered in MLL-PTD patients. The most prominently mutated genes within this category were the splicing factors. They included U2AF1 (13%, S34F/Y), SRSF2 (3%), SF3A1 (5%), ZRSR2 (3%), DHX15 (1%) and CWC22 (1%).
Multiple mutations co-occur with MLL-PTD which are usually acquired in a sequential manner. A potential ordering for acquisition of many mutations include IDH2/DNMT3A/U2AF1/TET2→MLL-PTD→RAS-receptor tyrosine kinase based on the following reasons: #1, real-time-PCR showed that MLL-PTD was absent in remission while mutations of IDH2, DNMT3A, TET2 and U2AF1 were still retained with a high VAF. This suggests that MLL-PTD was acquired after mutations of IDH2, DNMT3A, TET2 and U2AF1; #2, MLL-PTD is highly stable during disease progression as compared with mutations of the RAS-RTK. On the other hand, RAS-RTK mutations frequently exist as subclonal mutations and tend to be unstable during disease progression. These observations support a notion that MLL-PTD was acquired prior to RAS-RTK. Taken together, MLL-PTD is acquired after those remission-persisting, initiating mutations (IDH2, DNMT3A, TET2 and U2AF1), but prior to lesions of the proliferation-related drivers.
Citation Format: Lingwen Ding, Qiaoyang Sun, Kar-Tong Tan, Wenwen Chien, Anand Mayakonda, Dechen Lin, Xinyi Loh, Jinfen Xiao, Manja Meggendorfer, Tamara Alpermann, Manoj Garg, Su-Lin Lim, Vikas Madan, Norimichi Hattori, Yasunobu Nagata, Satoru Miyano, Allen Yeoh Eng Juh, Hsin-An Hou, Yan-Yi Jiang, Yan-Yi Jiang, Sumiko Takao, Li-Zhen Liu, Siew-Zhuan Tan, Siew-Zhuan Tan, Michael Lill, Mutsumi Hayashi, Akitoshi Kinoshita, Hagop M. Kantarjian, Steven M. Kornblau, Seishi Ogawa, Torsten Haferlach, Henry Yang, H. Phillip Koeffler. Mutational profiling of MLL-PTD acute myeloid leukemia [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 2450. doi:10.1158/1538-7445.AM2017-2450
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Affiliation(s)
- Lingwen Ding
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Qiaoyang Sun
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Kar-Tong Tan
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Wenwen Chien
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Anand Mayakonda
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Dechen Lin
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Xinyi Loh
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Jinfen Xiao
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | | | | | - Manoj Garg
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Su-Lin Lim
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Vikas Madan
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | | | | | | | | | - Hsin-An Hou
- 5National Taiwan University Hospital, Taiwan, Taiwan
| | - Yan-Yi Jiang
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Yan-Yi Jiang
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Sumiko Takao
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Li-Zhen Liu
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Siew-Zhuan Tan
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Siew-Zhuan Tan
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | | | | | | | | | | | - Seishi Ogawa
- 3Department of Pathology and Tumor Biology, Kyoto, Japan
| | | | - Henry Yang
- 1Cancer Science Institute of Singapore, Singapore, Singapore
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Liu LZ, Wu JY, Wu ZY, Chen ZH, Ling L, Sun B, Li YF, Huang XS. [Clinical and electrophysiological studies of oxaliplatin-induced peripheral neuropathy]. Zhonghua Yi Xue Za Zhi 2017; 96:1021-5. [PMID: 27055794 DOI: 10.3760/cma.j.issn.0376-2491.2016.13.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To identify the sensitive scales and the early change of nerve conduction for chronic oxaliplatin-induced peripheral neuropathy (OXLIPN), and to investigate correlation between the symptoms of acute OXLIPN and chronic OXLIPN. METHODS Between December 2014 and August 2015, 16 colorectal cancer patients confirmed by pathology, from department of Oncology, Chinese PLA General Hospital, scheduled to receive XELOX, completed the acute neurotoxic symptoms questionnaire at the end of 1 cycles and the scales of TNSc and NCI-CTC at the baseline and the end of 4 cycles. Nerve conduction studies (bilateral peroneal nerves and sural nerves) were performed in 11 patients at the baseline and the end of 4 cycles. RESULTS After chemotherapy, TNSc increased 1-9 points for all cases, while NCI-CTC increased 1 point for only 9 cases, the remaining 7 cases had the same NCI-CTC score before and after chemotherapy, where TNSc increased 1-6 points. Left sural nerve a-SNAP (amplitude of sensory nerve action potential) was (15.3±5.8)μV before chemotherapy and(12.3±5.0)μV after chemotherapy. Right sural nerve a-SNAP was (17.4±8.6)μV before chemotherapy and (13.3±6.7)μV after chemotherapy. After chemotherapy, these datum were significantly reduced for left peroneal nerve distal and proximal a-CMAP (amplitude of compound muscle action potential), bilateral sural nerve a-SNAP and left sural nerve SCV (sensory conduction velocity) (P<0.05). After chemotherapy, TNSc was correlated significantly with the acute neurotoxic symptoms questionnaire (Spearman r=0.698, P=0.003). CONCLUSIONS TNSc is more sensitive to the severity and changes in chronic OXLIPN than NCI-CTC. Sural nerve a-SNAP has a higher sensitivity for the early changes of nerve conduction studies in chronic OXLIPN. Patients who have more symptoms of acute OXLIPN are those who eventually develop more severe chronic OXLIPN.
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Affiliation(s)
- L Z Liu
- Department of Neurology, Chinese PLA General Hospital, Beijing 100853, China
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17
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Ding LW, Sun QY, Tan KT, Chien W, Mayakonda A, Yeoh AEJ, Kawamata N, Nagata Y, Xiao JF, Loh XY, Lin DC, Garg M, Jiang YY, Xu L, Lim SL, Liu LZ, Madan V, Sanada M, Fernández LT, Hema Preethi SS, Lill M, Kantarjian HM, Kornblau SM, Miyano S, Liang DC, Ogawa S, Shih LY, Yang H, Koeffler HP. Mutational Landscape of Pediatric Acute Lymphoblastic Leukemia. Cancer Res 2016; 77:390-400. [PMID: 27872090 DOI: 10.1158/0008-5472.can-16-1303] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 09/30/2016] [Accepted: 10/20/2016] [Indexed: 01/07/2023]
Abstract
Current standard of care for patients with pediatric acute lymphoblastic leukemia (ALL) is mainly effective, with high remission rates after treatment. However, the genetic perturbations that give rise to this disease remain largely undefined, limiting the ability to address resistant tumors or develop less toxic targeted therapies. Here, we report the use of next-generation sequencing to interrogate the genetic and pathogenic mechanisms of 240 pediatric ALL cases with their matched remission samples. Commonly mutated genes fell into several categories, including RAS/receptor tyrosine kinases, epigenetic regulators, transcription factors involved in lineage commitment, and the p53/cell-cycle pathway. Unique recurrent mutational hotspots were observed in epigenetic regulators CREBBP (R1446C/H), WHSC1 (E1099K), and the tyrosine kinase FLT3 (K663R, N676K). The mutant WHSC1 was established as a gain-of-function oncogene, while the epigenetic regulator ARID1A and transcription factor CTCF were functionally identified as potential tumor suppressors. Analysis of 28 diagnosis/relapse trio patients plus 10 relapse cases revealed four evolutionary paths and uncovered the ordering of acquisition of mutations in these patients. This study provides a detailed mutational portrait of pediatric ALL and gives insights into the molecular pathogenesis of this disease. Cancer Res; 77(2); 390-400. ©2016 AACR.
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Affiliation(s)
- Ling-Wen Ding
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Qiao-Yang Sun
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Kar-Tong Tan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Wenwen Chien
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Anand Mayakonda
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Allen Eng Juh Yeoh
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Norihiko Kawamata
- Department of Molecular and Cellular Biology, Beckman Research Institute of City of Hope, Duarte, CA, USA.,Division of Hematology/Oncology, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, USA
| | - Yasunobu Nagata
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Jin-Fen Xiao
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Xin-Yi Loh
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - De-Chen Lin
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Division of Hematology/Oncology, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, USA
| | - Manoj Garg
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Yan-Yi Jiang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Liang Xu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Su-Lin Lim
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Li-Zhen Liu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Vikas Madan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Masashi Sanada
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Lucia Torres Fernández
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - S S Hema Preethi
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Michael Lill
- Division of Hematology/Oncology, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, USA
| | - Hagop M Kantarjian
- Department of Leukemia, University of Texas, MD Anderson Cancer Center, Houston, USA
| | - Steven M Kornblau
- Department of Leukemia, University of Texas, MD Anderson Cancer Center, Houston, USA
| | - Satoru Miyano
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Laboratory of Sequence Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Der-Cherng Liang
- Department of Pediatrics, Mackay Memorial Hospital, Taipei, Taiwan
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Lee-Yung Shih
- Division of Hematology-Oncology, Chang Gung Memorial Hospital, Linkou, Chang Gung University, Taipei, Taiwan
| | - Henry Yang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - H Phillip Koeffler
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.,Division of Hematology/Oncology, Cedars-Sinai Medical Center, UCLA School of Medicine, Los Angeles, USA
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Liu LZ, Zhang YM, Chen Y, Li L. Spreading patterns, prognostic factors and treatment outcomes of nasopharyngeal papillary adenocarcinoma and salivary gland-type carcinomas. Clin Otolaryngol 2016; 41:160-8. [PMID: 26118586 DOI: 10.1111/coa.12492] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2015] [Indexed: 11/27/2022]
Abstract
OBJECTIVES In this study, we aim to analyse the different spreading patterns, prognostic factors and treatment outcomes of nasopharyngeal papillary adenocarcinoma (NPAC) and salivary gland-type carcinomas (NPCs). DESIGN, SETTING AND PARTICIPANT The current study report on a retrospective analysis of oncologic outcome of 76 pathologically confirmed consecutive cases of nasopharyngeal adenocarcinomas (NAC), including 31 NPAC, 33 adenoid cystic carcinomas (ACC) and 12 mucoepidermoid carcinomas (MEC). MAIN OUTCOME MEASURE Overall survival rates (OS) and disease-free survival rates (DFS). RESULTS In 12 patients with cranial nerve (CN) palsy, there were ACC (n = 9), NPAC (n = 2) and MEC (n = 1) (P = 0.016). CT-/MRI-detected CN involvements were found in 22 patients. Lymph node metastasis was observed in 25.8% of NPAC (n = 8), 12.1% of ACC (n = 4) and 8.3% of MEC (n = 1). Significant differences were observed in 5-year overall survival (OS) and disease-free survival (DFS) rates between patients with and without CT-/MRI-detected CN involvement (P = 0.002 and P = 0.002, respectively), and similar results were found between patients with and without lymph node metastasis (P = 0.002 and P = 0.018, respectively). In 37 patients with early-stage disease (stages I-II), significant differences were observed in 5-year OS and DFS rates between the surgical and non-surgical treated groups (P = 0.031 and P = 0.012, respectively). In 39 patients with advanced-stage disease (stages III-IV), significant or marginally differences were observed in DFS and OS between the chemoradiotherapy and non-chemoradiotherapy groups (P = 0.007 and P = 0.062, respectively). CONCLUSIONS ACC has a higher CN invasion than NPAC and MEC, and NPAC has the highest rate of lymphatic metastases. CT-/MRI-detected CN involvements and lymph node metastasis indicate a negative impact on the prognosis. The outcome of surgical patients in our series is encouraging in early-stage NPAC and NPCs, and chemoradiotherapy may be the optimal treatment for the advanced-stage patients.
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Affiliation(s)
- L Z Liu
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, China.,Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y M Zhang
- Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y Chen
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - L Li
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, China.,Imaging Diagnosis and Interventional Center, Sun Yat-sen University Cancer Center, Guangzhou, China
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Liu T, Zhao FZ, Wang YY, Hou JM, Liu LZ, Shen YQ, Liu Z, Zhang HT, Zuo YH. Comparative analysis of phylogenetic relationships, morphologies, and pathogenicities among Curvularia lunata isolates from maize in China. Genet Mol Res 2015; 14:12537-46. [PMID: 26505404 DOI: 10.4238/2015.october.16.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
To understand the effects of disease-resistant maize varieties and new cropping systems on the population of Curvularia lunata, 52 isolates of C. lunata were collected in China from 2011 to 2013. The isolates were analyzed in terms of phylogenetic relationships, morphology, and pathogenicity. Phylogenetic analysis showed that the 52 isolates clustered into 2 distinct clusters with further subdivisions, suggesting the emergence of new genetic divergence within C. lunata. Results of morphology and pathogenicity analyses demonstrated that there were significant differences among these isolates: 27 isolates were classified as fast growing, 5 as slow growing, and 20 as moderate growing. Three isolates had white-colored colonies, 13 had yellowish green-colored colonies, and the remaining isolates had dark green-colored colonies. Furthermore, conidiation rates were assessed: 30 isolates were characterized as having low conidiation rates, 15 as having medium conidiation rates, and the remaining 7 isolates as having high conidiation rates. Eleven of the isolates appeared to be strongly pathogenic against maize, 15 isolates proved to be weakly pathogenic against maize, and the remaining isolates were regarded to be moderately pathogenic. Interestingly, correlation analysis demonstrated a negative correlation between the growth rate and the pathogenicity of the isolates, while a positive correlation was observed between the conidiation rate and the pathogenicity. No correlation was observed between the colony color and the pathogenicity of the isolates.
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Affiliation(s)
- T Liu
- Institute of Plant Pathology and Applied Microbiology, Agricultural School, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - F Z Zhao
- Institute of Plant Pathology and Applied Microbiology, Agricultural School, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Y Y Wang
- Institute of Plant Pathology and Applied Microbiology, Agricultural School, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - J M Hou
- Institute of Plant Pathology and Applied Microbiology, Agricultural School, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - L Z Liu
- Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Y Q Shen
- Institute of Plant Pathology and Applied Microbiology, Agricultural School, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Z Liu
- Institute of Plant Pathology and Applied Microbiology, Agricultural School, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - H T Zhang
- Institute of Plant Pathology and Applied Microbiology, Agricultural School, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Y H Zuo
- Institute of Plant Pathology and Applied Microbiology, Agricultural School, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
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Xu L, Lin DC, Chen Y, Yan H, Hazawa M, Doan N, Said JW, Ding LW, Liu LZ, Yang H, Yu SZ, Kahn M, Yin D, Koeffler P. Abstract 122: PARK2 is a negative regulator of Wnt and EGFR pathways in glioma. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-122] [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]
Abstract
Abstract
PARK2 is an E3 ubiquitin ligase whose dysfunction has been associated with the progression of autosomal recessive juvenile Parkinson's disease and human malignancies. However, its role in cancer remains to be explored. In this study, we report that PARK2 is frequently deleted and underexpressed in human glioma, and low PARK2 expression is associated with poor survival in cohorts of both low-grade glioma and glioblastoma multiforme (GBM). Functional studies revealed a tumor-suppressive role of PARK2 in GBM cells. Restoration of PARK2 significantly inhibited glioma cell growth both in vitro and in vivo, while depletion of endogenous PARK2 promoted cell proliferation. cDNA microarray analysis showed that PARK2 expression strongly altered the activity of both the Wnt and EGFR pathways. Immunoblot analysis confirmed that ectopic expression of PARK2 suppressed the intracellular levels of β-catenin, EGFR, as well as their down-stream targets including Cyclin D1, TCF4, c-Myc, p-AKT and p-S6K, etc. Notably, PARK2 physically interacted with both β-catenin and EGFR, and promoted their ubiquitination in an E3-ligase dependent manner. Similar to the ligase-dead PARK2 mutant (C431S), three PARK2 mutants harboring cancer-derived somatic mutations (T173A, T240M and P294S) showed decreased ability to ubiquitinate either β-catenin or EGFR proteins. We further found that PARK2 attenuated the cellular response to both Wnt3a and EGF stimulation, suggesting PARK2 is a negative regulator of both the Wnt and EGFR pathways. Lastly, inspired by these newly identified functions of PARK2, we tested and proved that the combination of small-molecule inhibitors targeting both Wnt-β-catenin and EGFR-AKT pathways synergistically impaired glioma cell viability. In aggregate, our findings uncover novel, cancer-associated functions of PARK2 and provide a potential therapeutic approach to treat glioma.
Citation Format: Liang Xu, De-Chen Lin, Ye Chen, Haiyan Yan, Masaharu Hazawa, Ngan Doan, Jonathan W. Said, Ling-Wen Ding, Li-Zhen Liu, Henry Yang, Shi-zhu Yu, Michael Kahn, Dong Yin, Phillip Koeffler. PARK2 is a negative regulator of Wnt and EGFR pathways in glioma. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 122. doi:10.1158/1538-7445.AM2015-122
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Affiliation(s)
- Liang Xu
- 1National University of Singapore, Singapore
| | - De-Chen Lin
- 1National University of Singapore, Singapore
| | - Ye Chen
- 1National University of Singapore, Singapore
| | - Haiyan Yan
- 2Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | | | - Ngan Doan
- 3UCLA School of Medicine, Los Angeles, CA
| | | | | | - Li-Zhen Liu
- 1National University of Singapore, Singapore
| | - Henry Yang
- 1National University of Singapore, Singapore
| | - Shi-zhu Yu
- 4Tianjin Medical University General Hospital, Tianjin, China
| | - Michael Kahn
- 5University of Southern California, Los Angeles, CA
| | - Dong Yin
- 2Sun Yat-Sen Memorial Hospital, Guangzhou, China
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LIN DECHEN, Meng X, Hazawa M, Nagata Y, Varela AM, Xu L, Sato Y, Liu LZ, Ding LW, Sharma A, Goh BC, Lee SC, Petersson BF, Yu FG, Macary P, Oo MZ, Chan SH, Yang H, Ogawa S, Koeffler HP. Abstract 3939: The genomic landscape of nasopharyngeal carcinoma. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-3939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background Nasopharyngeal carcinoma (NPC) arises from the epithelial tissue of the nasopharynx. This cancer has remarkable ethnic and geographic distributions, with a particularly high prevalence in Southern China and Southeast Asia. Genetic susceptibility and Epstein-Barr virus infections have been implicated in the pathogenesis of NPC. However, genomic abnormalities of this neoplasm remain largely obscure, and no effective targeted therapy has been established. Therefore, a strong need exists to characterize the genetic alterations of this type of tumour for guiding the development of more effective and innovative therapeutic regimens.
Methods Whole exomes sequencing (WES) was performed on 56 NPC germline/tumor pairs and 5 NPC cell lines. Transcriptome sequencing (RNA-seq) was conducted on 4 tumors from this cohort. An additional 61 NPC germline/tumor pairs and 5 non-paired primary tumors were further subjected to targeted regional deep-sequencing (TS). The somatic copy number variations (SCNV) of 52 primary tumors were profiled by SNP-array hybridization (50 of them also had WES data). Finally, both in vitro and in vivo biological and biochemical experiments were performed to evaluate the newly-identified mutations in NPC cell lines.
Results We identified a total of 1,577 non-silent somatic mutations affecting 1,413 genes from WES, revealing a relatively low mutational rate and wide mutational diversity. Integration of the results from WES, TS and RNA-seq revealed a distinct mutational signature and a number of significantly mutated genes (such as TP53, ARID1A, MLL2, BAP1, PIK3CA, etc.) in NPC. Pathway enrichment analysis of genetic lesions identified several important cellular processes and pathways in NPC including chromatin modification, ERBB-PI3K signaling and autophagy machinery. We further characterized the biological functions of both ARID1A and BAP1 proteins in NPC cell lines. Depletion of wild-type endogenous ARID1A expression with shRNAs resulted in increased anchorage-independent colony formation, cell migration and xenograft growth in vivo, whereas ectopically expressed ARID1A suppressed both cell proliferation and migration. Similarly, ectopic expression of wild-type BAP1 suppressed anchorage-independent colony formation of NPC cells.
Conclusion We characterized the genomic landscape of 128 NPC cases, and identified a number of novel driver genes with statistical and biological evidence. Integrated analysis showed enrichment of genetic lesions affecting chromatin modification, ERBB-PI3K signaling and autophagy machinery, offering opportunities for developing novel treatments. These results in aggregate provide an important genetic foundation for further study of the molecular pathology and etiology of this fatal disease.
Citation Format: DECHEN LIN, Xuan Meng, Masaharu Hazawa, Yasunobu Nagata, Ana Maria Varela, Liang Xu, Yusuke Sato, Li-Zhen Liu, Ling-Wen Ding, Arjun Sharma, Boon Cher Goh, Soo Chin Lee, Bengt Fredrik Petersson, Feng Gang Yu, Paul Macary, Min Zin Oo, Soh Ha Chan, Henry Yang, Seishi Ogawa, H. Phillip Koeffler. The genomic landscape of nasopharyngeal carcinoma. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 3939. doi:10.1158/1538-7445.AM2015-3939
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Affiliation(s)
- DECHEN LIN
- 1Cedars-Sinai Medical Center, Los Angeles, CA
| | - Xuan Meng
- 2Cancer Science Institute of Singapore, Singapore
| | | | | | | | - Liang Xu
- 2Cancer Science Institute of Singapore, Singapore
| | | | - Li-Zhen Liu
- 2Cancer Science Institute of Singapore, Singapore
| | | | - Arjun Sharma
- 2Cancer Science Institute of Singapore, Singapore
| | | | - Soo Chin Lee
- 2Cancer Science Institute of Singapore, Singapore
| | | | - Feng Gang Yu
- 5National University Hospital Singapore, Singapore
| | - Paul Macary
- 6National University of Singapore, Singapore
| | - Min Zin Oo
- 6National University of Singapore, Singapore
| | - Soh Ha Chan
- 6National University of Singapore, Singapore
| | - Henry Yang
- 2Cancer Science Institute of Singapore, Singapore
| | - Seishi Ogawa
- 5National University Hospital Singapore, Singapore
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22
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Lin DC, Xu L, Chen Y, Yan H, Hazawa M, Doan N, Said JW, Ding LW, Liu LZ, Yang H, Yu S, Kahn M, Yin D, Koeffler HP. Genomic and Functional Analysis of the E3 Ligase PARK2 in Glioma. Cancer Res 2015; 75:1815-27. [PMID: 25877876 DOI: 10.1158/0008-5472.can-14-1433] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 11/13/2014] [Indexed: 11/16/2022]
Abstract
PARK2 (PARKIN) is an E3 ubiquitin ligase whose dysfunction has been associated with the progression of Parkinsonism and human malignancies, and its role in cancer remains to be explored. In this study, we report that PARK2 is frequently deleted and underexpressed in human glioma, and low PARK2 expression is associated with poor survival. Restoration of PARK2 significantly inhibited glioma cell growth both in vitro and in vivo, whereas depletion of PARK2 promoted cell proliferation. PARK2 attenuated both Wnt- and EGF-stimulated pathways through downregulating the intracellular level of β-catenin and EGFR. Notably, PARK2 physically interacted with both β-catenin and EGFR. We further found that PARK2 promoted the ubiquitination of these two proteins in an E3 ligase activity-dependent manner. Finally, inspired by these newly identified tumor-suppressive functions of PARK2, we tested and proved that combination of small-molecule inhibitors targeting both Wnt-β-catenin and EGFR-AKT pathways synergistically impaired glioma cell viability. Together, our findings uncover novel cancer-associated functions of PARK2 and provide a potential therapeutic approach to treat glioma.
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Affiliation(s)
- De-Chen Lin
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore.
| | - Liang Xu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Ye Chen
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Haiyan Yan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Masaharu Hazawa
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Ngan Doan
- Department of Pathology and Laboratory Medicine, UCLA School of Medicine, Los Angeles, California
| | - Jonathan W Said
- Department of Pathology and Laboratory Medicine, UCLA School of Medicine, Los Angeles, California
| | - Ling-Wen Ding
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Li-Zhen Liu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Henry Yang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Shizhu Yu
- Department of Neuropathology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, China. Key Laboratory of Neurotrauma, Variation and Regeneration of Education Ministry and Tianjin Municipality, Tianjin, China
| | - Michael Kahn
- Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California. Department of Molecular Pharmacology and Toxicology, Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Dong Yin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.
| | - H Phillip Koeffler
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore. National University Cancer Institute, National University Health System and National University of Singapore, Singapore, Singapore. Division of Hematology/Oncology, Cedars-Sinai Medical Center, University of California School of Medicine, Los Angeles, California
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Ng CLL, Pang BC, Medina PJA, Tan KA, Dahshaini S, Liu LZ. The learning curve of lateral access lumbar interbody fusion in an Asian population: a prospective study. Eur Spine J 2015; 24 Suppl 3:361-8. [DOI: 10.1007/s00586-015-3876-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 02/13/2015] [Accepted: 02/26/2015] [Indexed: 11/24/2022]
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24
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Garg M, Okamoto R, Nagata Y, Kanojia D, Venkatesan S, M T A, Braunstein GD, Said JW, Doan NB, Ho Q, Akagi T, Gery S, Liu LZ, Tan KT, Chng WJ, Yang H, Ogawa S, Koeffler HP. Establishment and characterization of novel human primary and metastatic anaplastic thyroid cancer cell lines and their genomic evolution over a year as a primagraft. J Clin Endocrinol Metab 2015; 100:725-35. [PMID: 25365311 PMCID: PMC4318896 DOI: 10.1210/jc.2014-2359] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Anaplastic thyroid cancer (ATC) has no effective treatment, resulting in a high rate of mortality. We established cell lines from a primary ATC and its lymph node metastasis, and investigated the molecular factors and genomic changes associated with tumor growth. OBJECTIVE The aim of the study was to understand the molecular and genomic changes of highly aggressive ATC and its clonal evolution to develop rational therapies. DESIGN We established unique cell lines from primary (OGK-P) and metastatic (OGK-M) ATC specimen, as well as primagraft from the metastatic ATC, which was serially xeno-transplanted for more than 1 year in NOD scid gamma mice were established. These cell lines and primagraft were used as tools to examine gene expression, copy number changes, and somatic mutations using RNA array, SNP Chip, and whole exome sequencing. RESULTS Mice carrying sc (OGK-P and OGK-M) tumors developed splenomegaly and neutrophilia with high expression of cytokines including CSF1, CSF2, CSF3, IL-1β, and IL-6. Levels of HIF-1α and its targeted genes were also elevated in these tumors. The treatment of tumor carrying mice with Bevacizumab effectively decreased tumor growth, macrophage infiltration, and peripheral WBCs. SNP chip analysis showed homozygous deletion of exons 3-22 of the PARD3 gene in the cells. Forced expression of PARD3 decreased cell proliferation, motility, and invasiveness, restores cell-cell contacts and enhanced cell adhesion. Next generation exome sequencing identified the somatic changes present in the primary, metastatic, and primagraft tumors demonstrating evolution of the mutational signature over the year of passage in vivo. CONCLUSION To our knowledge, we established the first paired human primary and metastatic ATC cell lines offering unique possibilities for comparative functional investigations in vitro and in vivo. Our exome sequencing also identified novel mutations, as well as clonal evolution in both the metastasis and primagraft.
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Affiliation(s)
- Manoj Garg
- Cancer Science Institute (CSI) of Singapore (M.G., D.K., S.V., A.M.T., L.-z.L., K.T.T., W.J.C., H.Y., H.P.K.), National University of Singapore, Singapore 117599, Singapore; Division of Hematology/Oncology (R.O., Q.H., T.A., S.G., H.P.K.), Cedars-Sinai Medical Center, Los Angeles, California 90048; Graduate School of Medicine (Y.N., S.O.), The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; Department of Medicine (G.D.B.), Cedars-Sinai Medical Center, Los Angeles, California 90048; Department of Pathology and Laboratory Medicine (J.W.S., N.B.D.), David Geffen School of Medicine, Los Angeles, California 90048; and National University Cancer Institute (H.P.K.), National University Hospital, Singapore 117599
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Sun QY, Ding LW, Xiao JF, Chien W, Lim SL, Hattori N, Goodglick L, Chia D, Mah V, Alavi M, Kim SR, Doan NB, Said JW, Loh XY, Xu L, Liu LZ, Yang H, Hayano T, Shi S, Xie D, Lin DC, Koeffler HP. SETDB1 accelerates tumourigenesis by regulating the WNT signalling pathway. J Pathol 2014; 235:559-70. [PMID: 25404354 DOI: 10.1002/path.4482] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [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: 06/03/2014] [Revised: 10/07/2014] [Accepted: 11/08/2014] [Indexed: 12/21/2022]
Abstract
We investigated the oncogenic role of SETDB1, focusing on non-small cell lung cancer (NSCLC), which has high expression of this protein. A total of 387 lung cancer cases were examined by immunohistochemistry; 72% of NSCLC samples were positive for SETDB1 staining, compared to 46% samples of normal bronchial epithelium (106 cases) (p <0.0001). The percentage of positive cells and the intensity of staining increased significantly with increased grade of disease. Forced expression of SETDB1 in NSCLC cell lines enhanced their clonogenic growth in vitro and markedly increased tumour size in a murine xenograft model, while silencing (shRNA) SETDB1 in NSCLC cells slowed their proliferation. SETDB1 positively stimulated activity of the WNT-β-catenin pathway and diminished P53 expression, resulting in enhanced NSCLC growth in vitro and in vivo. Our finding suggests that therapeutic targeting of SETDB1 may benefit patients whose tumours express high levels of SETDB1.
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Affiliation(s)
- Qiao-Yang Sun
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
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26
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Garg M, Kanojia D, Okamoto R, Madan V, Chien W, Sampath A, Ding LW, Xuan M, Said JW, Doan N, Liu LZ, Yang H, Gery S, Braunstein GD, Koeffler H. Abstract 5570: Laminin-5 gamma-2 (LAMC2) is highly expressed in anaplastic thyroid carcinoma and is associated with tumor progression, migration and invasion by modulating signaling of EGFR. Cancer Res 2014. [DOI: 10.1158/1538-7445.am2014-5570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Context: Anaplastic thyroid carcinoma (ATC) is an aggressive malignancy having no effective treatment. Laminin subunit gamma-2 (LAMC2) is an epithelial basement membrane protein involved in cell migration and tumour invasion and might represent an ideal target for the development of novel therapeutic approaches for ATC.
Objective: Study the role of LAMC2 in ATC tumorigenesis.
Design: LAMC2 expression was evaluated by RT-PCR, western blotting and immunohistochemistry in tumor specimens, adjacent non-cancerous tissues and cell lines. shRNA approach was used to investigate the effect of LAMC2 knockdown on tumorigenesis of ATC.
Results: LAMC2 was highly expressed in ATC samples and cell lines compared to normal thyroid tissues. Silencing LAMC2 by shRNA in ATC cells moderately inhibited cell growth in liquid culture and dramatically decreased growth in soft agar and in xenografts growing in immunodeficient mice. Silencing LAMC2 caused cell cycle arrest and significantly suppressed migration, invasion and wound healing of ATC cells. Rescue experiments by overexpressing LAMC2 in LAMC2 knockdown cells, reversed the inhibitory effects as shown by increased cell proliferation and colony formation. Microarray data demonstrated that LAMC2 shRNA significantly altered expression of genes associated with migration, invasion, proliferation and survival. Immunoprecipitation and co-localization experiments showed that LAMC2 bound to EGFR in ATC cells. Silencing LAMC2 partially blocked EGF-mediated activation of EGFR and its downstream pathway. Interestingly, cetuximab (EGFR blocking antibody) or EGFR siRNA additively enhanced the anti-proliferative activity of the LAMC2 knockdown ATC cells compared to control cells.
Conclusions: To our knowledge, this is the first report investigating the effect of LAMC2 on cell growth, cell cycle, migration, invasion and EGFR signaling in ATC cells, suggesting that LAMC2 may be a potential therapeutic target for treatment of ATC.
Citation Format: Manoj Garg, Deepika Kanojia, Ryoko Okamoto, Vikas Madan, Wenwen Chien, Abhishek Sampath, Ling-Wen Ding, Meng Xuan, Jonathan W Said, Ngan Doan, Li-Zhen Liu, Henry Yang, Sigal Gery, Gleen D Braunstein, H.Phillip Koeffler. Laminin-5 gamma-2 (LAMC2) is highly expressed in anaplastic thyroid carcinoma and is associated with tumor progression, migration and invasion by modulating signaling of EGFR. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 5570. doi:10.1158/1538-7445.AM2014-5570
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Affiliation(s)
- Manoj Garg
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Deepika Kanojia
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Ryoko Okamoto
- 2Cedars-Sinai Medical Center, Division of Hematology/ Oncology, UCLA, Los Angeles, CA
| | - Vikas Madan
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Wenwen Chien
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Abhishek Sampath
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Ling-Wen Ding
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Meng Xuan
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Jonathan W Said
- 3Cedars-Sinai, Department of Pathology and Laboratory Medicine, Los Angeles, CA
| | - Ngan Doan
- 3Cedars-Sinai, Department of Pathology and Laboratory Medicine, Los Angeles, CA
| | - Li-Zhen Liu
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Henry Yang
- 1Cancer Science Institute (CSI) of Singapore, Singapore, Singapore
| | - Sigal Gery
- 2Cedars-Sinai Medical Center, Division of Hematology/ Oncology, UCLA, Los Angeles, CA
| | - Gleen D Braunstein
- 4Department of Medicine, David Geffen School of Medicine, Los Angeles, CA
| | - H.Phillip Koeffler
- 2Cedars-Sinai Medical Center, Division of Hematology/ Oncology, UCLA, Los Angeles, CA
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27
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Tang SY, Li L, Liu Y, Liu AY, Yu MJ, Zhang Y, Liu LZ, Wan YP. [Interaction of DAXX and human papillomavirus type 16 E2 protein]. Mol Biol (Mosk) 2014; 48:682-686. [PMID: 25842852] [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: 06/04/2023]
Abstract
The aim of the study was to explore the interactions of human papilloma virus 16 (HPV16) E2 protein and Daxx. The location or co-localization of PML and E2 with Daxx in Caski cells was observed by indirect immunofluorescence test. The interaction of E2 and Daxx was analyzed by co-immunoprecipitation, Western-blot and yeast-two hybrid assay. In Caski cells the fluorescence of Daxx or PML was mainly distributed in the cytoplasm or nucleus, respectively, and in the align image their signals did not overlapped. However, when the red signal of HPV16 E2 and the green signal of Daxx in cyto- plasm of Caski cells were merged, the yellow signals appeared. The yeast co-transformed with pGBKT7/Daxx and pGADT7/E2 or pGADT7/E2 TAD can grow onto SD/-Trp-Leu-His and SD/-Trp-Leu-His-Ade plates. So Daxx wasn't co-located with PML but with HPV16 E2 mainly in the cytoplasm of Caski cells. On the base of the results one can propose that HPV16 E2, in particularly its transcription-activity domain (TAD), interacts with Daxx.
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28
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Lin DC, Meng X, Hazawa M, Nagata Y, Varela AM, Xu L, Sato Y, Liu LZ, Ding LW, Sharma A, Goh BC, Lee SC, Petersson BF, Yu FG, Macary P, Oo MZ, Ha CS, Yang H, Ogawa S, Loh KS, Koeffler HP. The genomic landscape of nasopharyngeal carcinoma. Nat Genet 2014; 46:866-71. [PMID: 24952746 DOI: 10.1038/ng.3006] [Citation(s) in RCA: 253] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 05/13/2014] [Indexed: 12/15/2022]
Abstract
Nasopharyngeal carcinoma (NPC) has extremely skewed ethnic and geographic distributions, is poorly understood at the genetic level and is in need of effective therapeutic approaches. Here we determined the mutational landscape of 128 cases with NPC using whole-exome and targeted deep sequencing, as well as SNP array analysis. These approaches revealed a distinct mutational signature and nine significantly mutated genes, many of which have not been implicated previously in NPC. Notably, integrated analysis showed enrichment of genetic lesions affecting several important cellular processes and pathways, including chromatin modification, ERBB-PI3K signaling and autophagy machinery. Further functional studies suggested the biological relevance of these lesions to the NPC malignant phenotype. In addition, we uncovered a number of new druggable candidates because of their genomic alterations. Together our study provides a molecular basis for a comprehensive understanding of, and exploring new therapies for, NPC.
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Affiliation(s)
- De-Chen Lin
- 1] Cancer Science Institute of Singapore, National University of Singapore, Singapore. [2] Division of Hematology/Oncology, Cedars-Sinai Medical Center, University of California, Los Angeles School of Medicine, Los Angeles, California, USA. [3]
| | - Xuan Meng
- 1] Cancer Science Institute of Singapore, National University of Singapore, Singapore. [2] Department of Medicine, School of Medicine, National University of Singapore, Singapore. [3]
| | - Masaharu Hazawa
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Yasunobu Nagata
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ana Maria Varela
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Liang Xu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Yusuke Sato
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Li-Zhen Liu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Ling-Wen Ding
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Arjun Sharma
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Boon Cher Goh
- 1] Cancer Science Institute of Singapore, National University of Singapore, Singapore. [2] Department of Haematology-Oncology, National University Cancer Institute, Singapore
| | - Soo Chin Lee
- 1] Cancer Science Institute of Singapore, National University of Singapore, Singapore. [2] Department of Haematology-Oncology, National University Cancer Institute, Singapore
| | | | - Feng Gang Yu
- Department of Otolaryngology, National University Hospital Singapore, Singapore
| | - Paul Macary
- Department of Immunology, National University of Singapore, Singapore
| | - Min Zin Oo
- Department of Immunology, National University of Singapore, Singapore
| | - Chan Soh Ha
- Department of Microbiology, National University of Singapore, Singapore
| | - Henry Yang
- 1] Cancer Science Institute of Singapore, National University of Singapore, Singapore. [2]
| | - Seishi Ogawa
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan. [3]
| | - Kwok Seng Loh
- 1] Department of Otolaryngology, National University Hospital Singapore, Singapore. [2]
| | - H Phillip Koeffler
- 1] Cancer Science Institute of Singapore, National University of Singapore, Singapore. [2] Division of Hematology/Oncology, Cedars-Sinai Medical Center, University of California, Los Angeles School of Medicine, Los Angeles, California, USA. [3] National University Cancer Institute, National University Hospital Singapore, Singapore. [4]
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Ma J, He SW, Li H, Guo QC, Pan WW, Wang XJ, Zhang J, Liu LZ, Liu W, Liu Y. First survey of helminths in adult goats in Hunan Province, China. Trop Biomed 2014; 31:261-269. [PMID: 25134894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The objective of the present survey was to reveal the prevalence of helminths in adult goats in Hunan Province, the People's Republic of China. From July 2010 through February 2013, a total of 479 goats slaughtered in local abattoirs and markets were examined for the presence of helminths using a helminthological approach. Eighty-six percent of the examined goats were infected with at least one species of helminths. In total, 15 genera of helminths were found representing 2 phyla, 3 classes, 5 orders, and 11 families. Oesophago-stomum, Ostertagia and Haemonchus were the most prevailing nematode genera, Eurytrema was the predominant trematode genus detected, whereas the infection of adult goats with cestodes was not common, with Cysticercus tenuicollis being the most common genus. The worm burdens showed obvious seasonal variation in that nematodes and cestodes were abundant in summer and winter, and the trematodes peaked in winter, which was consistent with the seasonal precipitation of Hunan Province. The geographical distribution of helminths in goats ascended with altitude. Goats in the mountainous areas were more severely infected with helminths than goats in the hilly areas, whereas infection of goats with helminths was much less in the lake areas. The present investigation highlights the high prevalence of helminths in adult goats in Hunan Province, China, which provides baseline data for assessing the effectiveness of future prevention and controlling measures against helminth infection in adult goats in this province and elsewhere.
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Affiliation(s)
- J Ma
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China
| | - S W He
- Xiangxi Vocational and Technical College for Nationalities, Jishou, Hunan Province 416000, PR China
| | - H Li
- Xiangxi Vocational and Technical College for Nationalities, Jishou, Hunan Province 416000, PR China
| | - Q C Guo
- Huaihua Vocational and Technical College, Huaihua, Hunan Province 418000, PR China
| | - W W Pan
- Loudi Animal Husbandry and Fishery Bureau, Loudi, Hunan Province 417000, PR China
| | - X J Wang
- Changsha Animal Health Supervision Institute, Changsha, Hunan Province 410006, PR China
| | - J Zhang
- Hunan Animal Health Supervision Institute, Changsha, Hunan Province 410007, PR China
| | - L Z Liu
- Boehringer Ingelheim Pharmaceutical Company Limited, Changde, Hunan Province 415000, PR China
| | - W Liu
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China
| | - Y Liu
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China
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Lin DC, Hao JJ, Nagata Y, Xu L, Shang L, Meng X, Sato Y, Okuno Y, Varela AM, Ding LW, Garg M, Liu LZ, Yang H, Yin D, Shi ZZ, Jiang YY, Gu WY, Gong T, Zhang Y, Xu X, Kalid O, Shacham S, Ogawa S, Wang MR, Koeffler HP. Genomic and molecular characterization of esophageal squamous cell carcinoma. Nat Genet 2014; 46:467-73. [PMID: 24686850 PMCID: PMC4070589 DOI: 10.1038/ng.2935] [Citation(s) in RCA: 438] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 03/05/2014] [Indexed: 02/06/2023]
Abstract
Esophageal squamous cell carcinoma (ESCC) is prevalent worldwide and particularly common in certain regions of Asia. Here we report the whole-exome or targeted deep sequencing of 139 paired ESCC cases, and analysis of somatic copy number variations (SCNV) of over 180 ESCCs. We identified previously uncharacterized mutated genes such as FAT1, FAT2, ZNF750 and KMT2D, in addition to those already known (TP53, PIK3CA and NOTCH1). Further SCNV evaluation, immunohistochemistry and biological analysis suggested their functional relevance in ESCC. Notably, RTK-MAPK-PI3K pathways, cell cycle and epigenetic regulation are frequently dysregulated by multiple molecular mechanisms in this cancer. Our approaches also uncovered many druggable candidates, and XPO1 was further explored as a therapeutic target because it showed both gene mutation and protein overexpression. Our integrated study unmasks a number of novel genetic lesions in ESCC and provides an important molecular foundation for understanding esophageal tumors and developing therapeutic targets.
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Affiliation(s)
- De-Chen Lin
- Cedars-Sinai Medical Center, Division of Hematology/Oncology, UCLA School of Medicine, Los Angeles, USA
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Jia-Jie Hao
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Yasunobu Nagata
- Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Liang Xu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Li Shang
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xuan Meng
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Yusuke Sato
- Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yusuke Okuno
- Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ana Maria Varela
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Ling-Wen Ding
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Manoj Garg
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Li-Zhen Liu
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Henry Yang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
| | - Dong Yin
- Medical Research Center, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Zhi-Zhou Shi
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Yan-Yi Jiang
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Wen-Yue Gu
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Ting Gong
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Yu Zhang
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Xin Xu
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Ori Kalid
- Karyopharm Therapeutics, Natick, MA, USA
| | | | - Seishi Ogawa
- Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ming-Rong Wang
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - H. Phillip Koeffler
- Cedars-Sinai Medical Center, Division of Hematology/Oncology, UCLA School of Medicine, Los Angeles, USA
- Cancer Science Institute of Singapore, National University of Singapore, Singapore
- National University Cancer Institute, National University Hospital Singapore, Singapore
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Garg M, Kanojia D, Okamoto R, Jain S, Madan V, Chien W, Sampath A, Ding LW, Xuan M, Said JW, Doan NB, Liu LZ, Yang H, Gery S, Braunstein GD, Koeffler HP. Laminin-5γ-2 (LAMC2) is highly expressed in anaplastic thyroid carcinoma and is associated with tumor progression, migration, and invasion by modulating signaling of EGFR. J Clin Endocrinol Metab 2014; 99:E62-72. [PMID: 24170107 PMCID: PMC3879679 DOI: 10.1210/jc.2013-2994] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Anaplastic thyroid carcinoma (ATC) is an aggressive malignancy having no effective treatment. Laminin subunit-γ-2 (LAMC2) is an epithelial basement membrane protein involved in cell migration and tumor invasion and might represent an ideal target for the development of novel therapeutic approaches for ATC. OBJECTIVE The objective of the investigation was to study the role of LAMC2 in ATC tumorigenesis. DESIGN LAMC2 expression was evaluated by RT-PCR, Western blotting, and immunohistochemistry in tumor specimens, adjacent noncancerous tissues, and cell lines. The short hairpin RNA (shRNA) approach was used to investigate the effect of LAMC2 knockdown on the tumorigenesis of ATC. RESULTS LAMC2 was highly expressed in ATC samples and cell lines compared with normal thyroid tissues. Silencing LAMC2 by shRNA in ATC cells moderately inhibited cell growth in liquid culture and dramatically decreased growth in soft agar and in xenografts growing in immunodeficient mice. Silencing LAMC2 caused cell cycle arrest and significantly suppressed the migration, invasion, and wound healing of ATC cells. Rescue experiments by overexpressing LAMC2 in LAMC2 knockdown cells reversed the inhibitory effects as shown by increased cell proliferation and colony formation. Microarray data demonstrated that LAMC2 shRNA significantly altered the expression of genes associated with migration, invasion, proliferation, and survival. Immunoprecipitation studies showed that LAMC2 bound to epidermal growth factor receptor (EGFR) in the ATC cells. Silencing LAMC2 partially blocked epidermal growth factor-mediated activation of EGFR and its downstream pathway. Interestingly, cetuximab (an EGFR blocking antibody) or EGFR small interfering RNA additively enhanced the antiproliferative activity of the LAMC2 knockdown ATC cells compared with the control cells. CONCLUSIONS To our knowledge, this is the first report investigating the effect of LAMC2 on cell growth, cell cycle, migration, invasion, and EGFR signaling in ATC cells, suggesting that LAMC2 may be a potential therapeutic target for the treatment of ATC.
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Affiliation(s)
- Manoj Garg
- Cancer Science Institute of Singapore (M.G., D.K., S.J., V.M., W.C., A.S., LW.D., M.X., L.-Z.L., H.Y., H.P.K.), National University of Singapore, and National University Cancer Institute (H.P.K.), National University Hospital, 117599 Singapore; Division of Hematology/Oncology (R.O., S.G., H.P.K.), Cedars-Sinai Medical Center, and Departments of Pathology and Laboratory Medicine (J.W.S., N.B.D.), Medicine (G.D.B), David Geffen School of Medicine, University of California School of Medicine, Los Angeles, California 90059
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Wu KN, Zhao YM, He Y, Wang BS, Du KL, Fu S, Hu KM, Zhang LF, Liu LZ, Hu YX, Wang YJ, Huang H. Rapamycin interacts synergistically with idarubicin to induce T-leukemia cell apoptosis in vitro and in a mesenchymal stem cell simulated drug-resistant microenvironment via Akt/mammalian target of rapamycin and extracellular signal-related kinase signaling pathways. Leuk Lymphoma 2013; 55:668-76. [PMID: 23741975 DOI: 10.3109/10428194.2013.811579] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
T-cell acute lymphoblastic leukemias (T-ALLs) are clonal lymphoid malignancies with a poor prognosis, and still a lack of effective treatment. Here we examined the interactions between the mammalian target of rapamycin (mTOR) inhibitor rapamycin and idarubicin (IDA) in a series of human T-ALL cell lines Molt-4, Jurkat, CCRF-CEM and CEM/C1. Co-exposure of cells to rapamycin and IDA synergistically induced T-ALL cell growth inhibition and apoptosis mediated by caspase activation via the intrinsic mitochondrial pathway and extrinsic pathway. Combined treatment with rapamycin and IDA down-regulated Bcl-2 and Mcl-1, and inhibited the activation of phosphoinositide 3-kinase (PI3K)/mTOR and extracellular signal-related kinase (ERK). They also played synergistic pro-apoptotic roles in the drug-resistant microenvironment simulated by mesenchymal stem cells (MSCs) as a feeder layer. In addition, MSCs protected T-ALL cells from IDA cytotoxicity by up-regulating ERK phosphorylation, while rapamycin efficiently reversed this protective effect. Taken together, we confirm the synergistic antitumor effects of rapamycin and IDA, and provide an insight into the potential future clinical applications of combined rapamycin-IDA regimens for treating T-cell malignancies.
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Affiliation(s)
- Kang-Ni Wu
- Bone Marrow Transplantation Center, The First Affiliated Hospital, School of Medicine, Zhejiang University , Hangzhou , China
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33
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Wei XP, Zhang YQ, Liu LZ. [Pediatric acute disseminated encephalomyelitis: clinical features and follow-up study in 39 cases]. Zhongguo Dang Dai Er Ke Za Zhi 2013; 15:693-695. [PMID: 23965888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Affiliation(s)
- Xin-Ping Wei
- Tianjin Children's Hospital, Tianjin 300074, China
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Wang YL, Xue F, Liu LZ, He ZH. Pathway analysis detect potential mechanism for familial combined hyperlipidemia. Eur Rev Med Pharmacol Sci 2013; 17:1909-1915. [PMID: 23877856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Familial combined hyperlipidemia (FCHL) is the most commonly inherited hyperlipidemia in men. It constitutes a substantial risk factor for atherosclerosis patients. AIM To delineating the potential mechanism of FCHL by bioinformatics tools. MATERIALS AND METHODS In this study, Protein-Protein Interaction (PPI) network was constructed to identify the potential functional proteins and their interactive relationships in familial combined hyperlipidemia. RESULTS Our results showed that androgen receptor (AR) might play an important role in familial combined hyperlipidemia by interaction with TGIF1, NR3C1, KLK2, etc. Some pathways were also identified, such as Hedgehog signaling pathway, Phosphatidylinositol signaling system, and Long-term depression, which were all demonstrated participating in lipid metabolism in previous experiments. CONCLUSIONS Although lack of direct evidence, by PPI network construction it proved AR is a key factor in FCHL, and also demonstrated that PPI network construction is an alternative avenue for FCHL analysis.
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Affiliation(s)
- Y L Wang
- Department of Orthopedics, Feng Xian Center Hospital, Shanghai, China.
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Lin D, Xu L, Ding LW, Sharma A, Liu LZ, Yang H, Tan P, Vadgama J, Karlan B, Lester J, Urban N, Schummer M, Doan N, Said J, Walsh M, Patel P, Thomas C, Chan D, Koeffler P. Abstract 586: Genomic and functional characterizations of phosphodiesterase 4Din human cancers. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-586] [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]
Abstract
Abstract
Background
Phosphodiesterase 4D (PDE4D) degrades the secondary messenger adenosine 3’, 5’-cyclic monophosphate (cAMP). PDE4D recently was implicated in cancer cell proliferation, but alterations in its genome and function in tumors are unclear.
Methods
PDE4D gene copy number determined by SNP-CHIP was comprehensively analyzed in a large number of solid tumor specimens from diverse origins (n=5,569). Expression of PDE4D gene transcripts were examined in 971 primary tumors, as well as established cancer cell lines. PDE4D protein expression in 11 different types of cancers were evaluated by immunohistochemistry (n=165). Endogenous PDE4D in multiple types of tumor cell lines was suppressed by both shRNAs and compound 26B, a novel inhibitor of PDE4D, and the effects on apoptosis and proliferation were examined. We further investigated the molecular mechanisms involved. Effect of ectopic expression of PDE4D on tumor growth was assessed both in vitro and in vivo.
Results
Homozygous deletion of PDE4D occurred in 198 cases out of 5,569 primary solid tumors (3.56%), with most of them being internal microdeletions. Unexpectedly, these internal microdeletions did not result in loss of its gene products, as the expression of PDE4D mRNA and protein was not compromised in the PDE4D-microdeleted samples. Immunohistochemistry staining revealed that PDE4D protein levels were up-regulated in several types of tumors. Importantly, genetic and pharmacological suppression of endogenous PDE4D caused apoptosis and growth inhibition preferentially in a variety of cancer cells but not in non-malignant epithelial cells. We further showed that anti-tumor events triggered by PDE4D-suppression were lineage-dependently associated with induction of BIM and down-regulation of MITF. Moreover, ectopic expression of the PDE4D short isoform (PDE4D2) enhanced the proliferation of melanoma both in vitro and in vivo.
Conclusions
We show for the first time that although targeted by genomic homozygous microdeletions, alternatively spliced PDE4D can function as a tumor-promoting factor. PDE4D represents a novel, targetable enzyme of cancer cells.
Citation Format: Dechen Lin, Liang Xu, Ling-Wen Ding, Arjun Sharma, Li-Zhen Liu, Henry Yang, Patrick Tan, Jay Vadgama, Beth Karlan, Jenny Lester, Nicole Urban, Michèl Schummer, Ngan Doan, Jonathan Said, Martin Walsh, Paresma Patel, Craig Thomas, Daniel Chan, Phillip Koeffler. Genomic and functional characterizations of phosphodiesterase 4Din human cancers. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 586. doi:10.1158/1538-7445.AM2013-586
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Affiliation(s)
- Dechen Lin
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Liang Xu
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Ling-Wen Ding
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Arjun Sharma
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Li-Zhen Liu
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Henry Yang
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Patrick Tan
- 1Cancer Science Institute of Singapore, Singapore, Singapore
| | - Jay Vadgama
- 2Charles R Drew University of Medicine and Science, CA
| | | | | | | | | | - Ngan Doan
- 5Santa Monica-University of California-Los Angeles Medical Center, Singapore, CA
| | - Jonathan Said
- 6Santa Monica-University of California-Los Angeles Medical Center, CA
| | | | | | | | - Daniel Chan
- 8National University Cancer Institute, Singapore, Singapore
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Xue C, Huang Y, Huang PY, Yu QT, Pan JJ, Liu LZ, Song XQ, Lin SJ, Wu JX, Zhang JW, Zhao HY, Xu F, Liu JL, Hu ZH, Zhao LP, Zhao YY, Wu X, Zhang J, Ma YX, Zhang L. Phase II study of sorafenib in combination with cisplatin and 5-fluorouracil to treat recurrent or metastatic nasopharyngeal carcinoma. Ann Oncol 2012; 24:1055-61. [PMID: 23172635 DOI: 10.1093/annonc/mds581] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND We aimed to investigate the efficacy and tolerability of sorafenib combined with cisplatin and 5-fluorouracil (5-FU) in patients with recurrent or metastatic nasopharyngeal carcinoma (NPC). PATIENTS AND METHODS It was a Simon two-stage designed trial. Chemotherapy-naive patients with recurrent or metastatic disease were enrolled. The regimen was sorafenib 400 mg orally b.i.d., cisplatin 80 mg/m(2) i.v. day 1, and 5-FU 1000 mg/m(2)/day CIV for 4 days, repeated every 21 days. After a maximum of six cycles of chemotherapy, patients received maintenance of sorafenib. RESULTS In total, 54 patients were enrolled. The objective response rate reached 77.8%, including 1 complete response and 41 partial responses. The median progression-free survival was 7.2 months (95% CI 6.8-8.4 months), and the median overall survival was 11.8 months (95% CI 10.6-18.7 months). Major toxic effects included hand-foot skin reaction, myelosuppression, and gastrointestinal (GI) reaction. The incidence of hemorrhage was 22.2%, and one patient with liver metastases died of GI bleeding. Contrast-enhanced ultrasonography was carried out in a subset of patients with liver metastases. CONCLUSION Combination of sorafenib, cisplatin (80 mg/m(2)) and 5-FU (3000 mg/m(2)) was tolerable and feasible in recurrent or metastatic NPC. Further randomized trials to compare sorafenib plus cisplatin and 5-FU with standard dose of cisplatin plus 5-FU in NPC are warranted.
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Affiliation(s)
- C Xue
- State Key Laboratory of Oncology in South China
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Wang YL, Cheng YS, Liu LZ, He ZH, Ding KH. Emergency transcatheter arterial embolization for patients with acute massive duodenal ulcer hemorrhage. World J Gastroenterol 2012; 18:4765-70. [PMID: 23002347 PMCID: PMC3442216 DOI: 10.3748/wjg.v18.i34.4765] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 02/02/2012] [Accepted: 05/06/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the efficacy and safety of emergency transcatheter arterial embolization (ETAE) for patients with acute massive duodenal ulcer hemorrhage.
METHODS: Twenty-nine consecutive patients with acute massive bleeding of duodenal ulcer were admitted to our hospital from 2006 to 2011. Superselective angiography of the celiac and gastroduodenal arteries was performed to find out the bleeding sites before ETAE, then, embolotherapy was done with gelatin sponge particles or microstrips via a 5 French angiographic catheter or 3 French microcatheter. After ETAE, further superior mesenteric arteriography was undertaken in case collateral circulation supplied areas of the duodenal ulcer. Technical and clinical success rates were analyzed. Changes in the mucous membrane were observed using endoscopy following ETAE.
RESULTS: Angiography showed active bleeding with extravasation of contrast medium in seven cases with a 24% positive rate of celiac artery bleeding, and in 19 cases with a 65.5% rate of gastroduodenal artery bleeding. There were no angiographic signs of bleeding in three patients who underwent endoscopy prior to ETAE. Twenty-six patients achieved immediate hemostasis and technical success rate reached 90%. No hemostasis was observed in 27 patients within 30 d after ETAE and clinical success rate was 93%. Recurrent hemorrhage occurred in two patients who drank a lot of wine who were treated by a second embolotherapy in the same way. Five patients underwent transient ischem with light abdominal pain under xiphoid, spontaneous restoration without special treatment. No mucous necrosis happened to 29 cases for ischem of gastroduodenal arteries embolized.
CONCLUSION: ETAE is an effective and safe measure to control acute massive bleeding of duodenal ulcer.
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Wang YL, Liu LZ, He ZH, Ding KH, Xue F. Phenotypic transformation and migration of adventitial cells following angioplasty. Exp Ther Med 2012; 4:26-32. [PMID: 23060918 DOI: 10.3892/etm.2012.551] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Accepted: 03/16/2012] [Indexed: 12/25/2022] Open
Abstract
The present study was designed to investigate the phenotypic transformation and migration of adventitial fibroblasts using 5-bromo-2'-deoxyuridine (BrdU) labeling following angioplasty and to explore the correlation between adventitial cells and post-angioplasty restenosis. A vascular restenosis model was established in 23 rats by injuring the common carotid artery with a wire. BrDU was used to label the fibroblasts followed by immunohistochemistry for α-actin. Blood vessels were observed under light microscopy and scanning electron microscopy followed by image analysis. The number of BrDU-positive fibroblasts in the intima, media and adventitia of the blood vessels was determined 3, 7, 41 and 28 days after injury. The results demonstrated that at different time points, the number of BrDU-positive cells was significantly different in the intima, media and adventia (P<0.05). Electron microscopy indicated that the fibroblasts were full of cytoplasm. In addition, many secretory granules were noted on the rough endoplasmic reticulum and a large amount of microfilament bundles were noted after angioplasty. The fibroblasts transformed into myofibroblasts. Seven and 14 days after injury, the myofibroblasts formed wide pseudopods stretching to the fenestrae of the external and internal elastic lamina, and cells had a tendency to migrate into the lumen. The fibroblasts in the adventitia underwent transformation after percutaneous transluminal angioplasty and secreted α-actin. In conclusion, the fibroblasts in the adventitia transformed into myofibroblasts, migrated into and proliferated in the intima and became a component of the newly generated intima. Adventitial cells are thus related to vascular restenosis.
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Affiliation(s)
- Yong-Li Wang
- Department of Interventional Radiology, Fengxian Center Hospital - Branch of Shanghai Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 201400, P.R. China
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Pei XQ, Liu LZ, Liu M, Zheng W, Han F, Li AH, Cai MY. Contrast-enhanced ultrasonography of hepatocellular carcinoma: correlation between quantitative parameters and histological grading. Br J Radiol 2011; 85:e740-7. [PMID: 22096225 DOI: 10.1259/bjr/20402927] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVE The quantitative parameters in the contrast-enhanced ultrasonography time-intensity curve of hepatocellular carcinoma (HCC) were studied to explore their possible implication for histological grading of HCC. METHODS A total of 130 HCC patients (115 males and 15 females; age: 48.13±11.00 years) were studied using contrast-enhanced ultrasonography time-intensity curve and histological pathology. The quantification software Sonoliver® (TomTec Imaging Systems, Unterschleissheim, Germany) was applied to derive time-intensity curves of regions of interest in the interior of HCCs and in reference. Quantitative parameters of 115 patients were successfully obtained, including maximum of intensity (IMAX), rise time (RT), time to peak (TTP), rise slope (RS) and washout time (WT). Histological grading of HCC was performed using haematoxylin-eosin staining, and monoclonal antibodies specific for smooth muscle actin were used to observe unpaired arteries (UAs). RESULTS There were significant differences among WTs in the three differentiated HCC groups (p<0.05). However, there were no significant differences among RT, TTP, RS and IMAX in the differentiated HCC groups. Moreover, the number of UAs in the differentiated HCC groups showed no statistical significance. CONCLUSION WT plays an important role in predicting well, moderately and poorly differentiated HCC.
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Affiliation(s)
- X Q Pei
- Department of Ultrasound, State Key Laboratory of Oncology in South China & Sun Yat-Sen University Cancer Center, Guangzhou, China
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Li TH, Liu LZ, Li XX, Wu XL, Chen HT, Chu PK. Oxygen vacancy density-dependent transformation from infrared to Raman active vibration mode in SnO2 nanostructures. Opt Lett 2011; 36:4296-4298. [PMID: 22048396 DOI: 10.1364/ol.36.004296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Raman spectra acquired from spherical, cubic, and cuboid SnO2 nanocrystals (NCs) reveal a morphologically independent Raman mode at ∼302 cm(-1). The frequency of this mode is slightly affected by the NC size, but the intensity increases obviously with decreasing NC size. By considering the dipole changes induced by oxygen vacancies and derivation based on the density functional theory and phonon confinement model, an oxygen vacancy density larger than 6% is shown to be responsible for the transformation of the IR to Raman active vibration mode, and the intensity enhancement is due to strong phonon confinement.
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Affiliation(s)
- T H Li
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
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41
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Hu YX, Luo Y, Tan YM, Shi JM, Sheng LX, Fu HR, Liu LZ, Xu YL, Wu KN, Xiao HW, Zhang LF, Yu XH, Cai Z, Huang H. Donor bone marrow-derived stem cells contribute to oral squamous cell carcinoma transformation in a recipient after hematopoietic stem cell transplantation. Stem Cells Dev 2011; 21:177-80. [PMID: 21910644 DOI: 10.1089/scd.2011.0308] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Abstract
Glycerol-passivated 3C-SiC nanocrystal (NC) solid films with tunable blue photoluminescence show abnormal longitudinal optical (LO) phonon behavior. As the NC size increases, the LO phonon intensity increases in the Raman spectra of the solid films and is even larger than that of the transverse optical mode. The Raman spectra cannot be fitted by using only the phonon confinement model. When further considering the coupling between the LO phonon and plasmon induced by the surface deformation potential in the glycerol layer, good agreement is achieved between the experiments and theory. This indicates that the coupled LO phonon-plasmon effect arising from the surface bonding structure plays a crucial role in the modified LO phonon behavior.
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Affiliation(s)
- L Z Liu
- Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
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Liu LZ, Wu XL, Zhang ZY, Xu LL, Li TH, Chu PK. Crystalline core/shell Si/SiO2 nanotubes formed via interfacial stress imbalance. J Nanosci Nanotechnol 2010; 10:5583-5586. [PMID: 21133077 DOI: 10.1166/jnn.2010.2443] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Crystalline core/shell Si/SiO2 nanotubes (NTs) with outer diameters of 130-220 nm and lengths of approximately 1 microm have been synthesized using thermal evaporation. High resolution scanning electron microscopy reveals that the NT formation stems from the intrinsic interfacial stress imbalance in the strained Si/SiO2 bilayered film, consequently leading to NTs with different orifice levels. The NT diameters depend strongly on the bilayer film thicknesses and crystal orientations of the Si and SiO2 layers. A modified Timoshenko formula is derived to calculate the dependence of the tube diameter on the bilayer film thickness. The obtained results are consistent well with experimental data.
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Affiliation(s)
- L Z Liu
- Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, Nanjing 210093, PR China
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Abstract
Melon (Cucumis melo L.) plants in commercial fields in Shanghai, Jiangsu, and Zhejiang exhibited stunting, deformation, interveinal chlorosis, and leaf mottling in the spring of 2008. In addition, adult and immature whiteflies (Bemisia tabaci biotype B) were present in these melon fields. Thirty-two symptomatic leaf samples were collected from these fields for further analysis (9 from Nanhui County in Shanghai, 11 from Fengxian County in Shanghai, 6 from Kunshan County of Jiangsu, and 6 from Jiashan County of Zhejiang). Total RNA was extracted from these samples along with asymptomatic control plants and screened for the presence of Cucurbit yellow stunting disorder virus (CYSDV) by using primers specific to genes encoding coat protein (2) and HSP70h (1) of CYSDV through reverse transcription (RT)-PCR methods. RNA was successfully extracted from 31 of 32 symptomatic samples. All 31 symptomatic leaf samples tested with coat protein primers were positive for CYSDV and yielded the expected fragment length of 394 bp. The RT-PCR products of the coat protein gene from all 31 isolates were cloned and found to be identical in sequence. Thus, only one was deposited in GenBank (No. GU189240). The submitted sequence of the amplified part of the coat protein gene was 99% identical to the sequence of coat protein gene of CYSDV from Jordan, France, and Florida (GenBank Accession Nos. DQ903107, AY204220, and EU596528, respectively) and 98% identical to that of an isolate from Spain (GenBank Accession No. AJ243000). Similarly, all 31 samples were also positive for CYSDV with the primers specific to HSP70h and yielded the expected fragment length of 175 bp. The RT-PCR products of the HSP70h gene from these isolates were also cloned and found to be identical in sequence. The sequence of the amplified portion of the HSP70h gene was found to be identical to the sequence of HSP70h of CYSDV deposited in GenBank (No. AJ439690.2). CYSDV was noticed in all three surveyed regions and the percentage of disease incidence was approximately 68% in all these regions. The occurrence of CYSDV has been previously reported in Europe (Spain and France), southern Asia (Iran and Jordan), North America (United States and Mexico), and other countries (1). To our knowledge, this is first report of CYSDV in China. References: (1) Y.-W. Kuo et al. Plant Dis. 91:330, 2007. (2) J. E. Polston et al. Plant Dis. 92:1251, 2008.
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Affiliation(s)
- L Z Liu
- Horticultural Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai Key Lab of Protected Horticultural Technology, Shanghai, 201106, China
| | - Y Y Chen
- Horticultural Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai Key Lab of Protected Horticultural Technology, Shanghai, 201106, China
| | - W M Zhu
- Horticultural Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai Key Lab of Protected Horticultural Technology, Shanghai, 201106, China
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Liu LZ, Wu XL, Gao F, Yang YM, Li TH, Chu PK. Size-independent low-frequency Raman scattering in Ge-nanocrystal-embedded SiO2 films. Opt Lett 2010; 35:1022-1024. [PMID: 20364204 DOI: 10.1364/ol.35.001022] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The peak position and linewidth of the low-frequency Raman mode observed from amorphous silica films embedded with Ge nanocrystals doped with Si show a size-independent behavior. Spectral analysis reveals the formation of a thin amorphous GeSi layer on the surface of the Ge nanocrystal. Theoretical calculation based on a modified three-region model discloses that the acoustic impedance of the interfacial GeSiO layer is responsible for the size-independent behavior. During high-temperature annealing, Ge atoms are segregated from the interface into the core, and the GeSiO interface layer is converted to SiO(2), leading to disappearance of the size-independent vibration mode.
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Affiliation(s)
- L Z Liu
- Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
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Liu XJ, Li W, Zhang YQ, Liu YM, Liu LZ. [Clinical features and treatment of serious brainstem encephalitis caused by enterovirus 71 infection]. Zhongguo Dang Dai Er Ke Za Zhi 2009; 11:967-969. [PMID: 20113599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE To study the clinical features and treatment of serious brainstem encephalitis caused by enterovirus 71 (EV71) infection. METHODS The clinical data of 32 hospitalized children with serious brainstem encephalitis caused by EV71 infection between May and December 2008 were retrospectively reviewed. RESULTS The children whose age was younger than 3 years old accounted for 88% (22 cases). Fever(>38.5 degrees centigrade)lasting at least 3 days, frequent vomiting and limb twitch were presented as the main manifestations in the 32 children. Cyanosis, tachypnea, tachycardia and cold extremities were observed, and pulmonary edema or even pulmonary hemorrhage occurred in 8 children 3 to 4 days after the onset. The 32 children received a medical treatment: reduction of intracranial pressure with mannitol or frusemide, inhibition of inflammation reactivity with gamma globulin and methylprednisolone, and improvement of cardiac function and pulmonary edema with innotropic agents, fluid restriction and positive mechanical ventilation. CONCLUSIONS Vegetative nerve functional disturbance is the main clinical feature of brainstem encephalitis caused by EV71 infection in children. An early identification and treatment of pulmonary edema or hemorrhage is of great importance.
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Affiliation(s)
- Xiao-Jun Liu
- Department of Neurology, Tianjin Children's Hospital, Tianjin 300074, China
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Yu YW, Qu X, Li JJ, Song Y, Liu L, Xi NN, Liao Y, Liu LZ. The relationship between plasma level of adiponectin and coronary lesion complexity in the population of north-east China. J Int Med Res 2009; 37:1479-85. [PMID: 19930854 DOI: 10.1177/147323000903700524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The relationship between plasma adiponectin and severity of coronary artery disease (CAD) in 683 cases of suspected CAD from north-east China was determined. Cases were divided into four groups, as follows: group 1, no stenosis; group 2, > 50% stenosis of one vessel; group 3, > 50% stenosis of two vessels; group 4, > 50% stenosis of three or more vessels. Group 1 was classified as a non-CAD group (control) and groups 2, 3 and 4 were classified as CAD groups. Plasma adiponectin levels were significantly correlated with coronary artery stenosis and were lower in the CAD groups than in the non-CAD group. Adiponectin concentration decreased from group 2 to group 4, but this difference was not significant. Adiponectin levels among females were also lower than for males in the CAD groups. There was a significant difference between plasma adiponectin levels in patients with coronary stenoses versus those without, but there were no significant differences between the three CAD groups in terms of plasma adiponectin levels.
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Affiliation(s)
- Y W Yu
- The First Clinical College of Harbin Medical University, Nangang District, Harbin, Heilongjiang, China
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Liu L, Liu LZ, Liu XZ, Bi B, Xu L. 2-(3-Oxocyclohex-1-enylamino)acetic acid. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o2776. [PMID: 21578369 PMCID: PMC2971405 DOI: 10.1107/s1600536809039646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Accepted: 09/29/2009] [Indexed: 12/03/2022]
Abstract
The six-membered ring of the title compound, C8H11NO3, adopts an envelope shape with the C atom in the meta position of the carbonyl representing the flap. This atom is disordered over two positions in an 0.865 (6): 0.135 (6) ratio. In the crystal, a two-dimensional supramolecular network parallel to the ac plane is built up from O—H⋯O and N—H⋯O hydrogen bonds.
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Liu LZ, Jian J, Wu JB, Huang LZ, Shi F. Effects of Nimesulide combined with Oxaliplatin on the proliferation and apoptosis of human liver cancer cells. Shijie Huaren Xiaohua Zazhi 2008; 16:4041-4045. [DOI: 10.11569/wcjd.v16.i36.4041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effects of cycloxy-genase-2 (COX-2) selective inhibitor Nimesulide combined with Oxaliplatin(L-OHP) on cell proliferation and apoptosis of human liver cancer cell line SMMC-7721.
METHODS: Nimesulide at the effective final concentration determined by pre-screen test, combined with different concentrations of L-OHP (0.5, 1.0, 2.0, 5 mg/L) was used to treat liver cancer cells for 48 hours. L-OHP final concentration and the final concentration of Nimesulide alone or jointly were used to treat liver cancer cells 24 h, 48 h, 72 h. Cell morphology changes was detected using inverted microscopy; cell proliferation changes was determined using MTT; cell apoptosis was determined using flow cytometry.
RESULTS: Nimesulide at different concentrations combined with L-OHP demonstrated growth inhibitory effect on SMMC-7721 with a dosage dependence effect. Nimesulide (50 mmol/L) or L-OHP (1 mg/L) alone significantly inhibited SMMC-7721 cell proliferation. The inhibitory effect of 50 mmol/L Nimesulide combined with L-OHP (0.5, 1.0, 2.0, 5.0 mg/L) was a joint synergy (Q > 1.15). After SMMC-7721 cells were treated with L-OHP 1.0 mg/L, Nimesulide 50 mmol/L, alone or jointly at 24 h, 48 h, 72 h, inhibitory effect of liver cancer cells was increased with time and a synergic effect was observed (Q > 1.15). Flow cytometry showed that both of the two drugs induced SMMC-7721 cells apoptosis, and the combined use resulted in synergic effect.
CONCLUSION: Both Nimesulide and L-OHP can inhibit cell proliferation and promote cell apoptosis of human liver cancer cell line SMMC-7721, and combined use shows a synergic effect.
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Jian J, Liu LZ, Li XY, Hu ZF, Wang D, Huang Y. Effects of ginsenoside Rg3 on the expression of Pim-3 and Bad in human hepatocarcinoma cell lines. Shijie Huaren Xiaohua Zazhi 2008; 16:2229-2233. [DOI: 10.11569/wcjd.v16.i20.2229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effects of ginsenoside Rg3 on the expression of Pim-3 and Bad phosphorylated proteins including pBad (Ser112) and pBad (Ser136) in human hepatocarcinoma cell line SMMC-7721.
METHODS: SMMC-7721 cells were exposed to 0, 5, 10, 20, 40 and 80 μmol/L ginsenoside Rg3 for 24 h. The effect of ginsenoside Rg3 on cell proliferation was measured using methyl thiazolyl tetrazolium (MTT) assay, and the apoptosis of SMMC-7721 cells was evaluated by inverted microscopy and flow cytometry. The expression of Pim-3 and pBad (Ser112) and pBad (ser136) were measured by Western blot.
RESULTS: The inhibitory rates were 4.69%, 15.53%, 22.17%, 50.97% and 61.65% respectively, after SMMC-7721 cells were exposed to 5, 10, 20, 40 and 80 μmol/L ginsenoside Rg3 for 24 h. Marked morphological changes of apoptosis were observed following exposure to 5-80 μmol/L ginsenoside Rg3. Flow cytometry showed the apoptosis rate was 0.39% in the normal control cells and 16.49% in the cells exposed to 80 μmol/L ginsenoside Rg3 for 24 h, indicating a marked elevation in apoptosis rate (P < 0.01). Ginsenoside Rg3 had no marked influences on the total Bad protein expression. Pim-3 expression was decreased with elevated ginsenoside Rg3 concentration, and the pBad (Ser112) was increased with elevated ginsenoside Rg3. But the pBad (Ser136) was not expressed.
CONCLUSION: The anti-cancer action of ginsenoside Rg3 may be associated with the decreased expression of Pim-3 and the increased expression of pBad (Ser112).
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