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Lou J, He X. [Progress of researches on the antiparasitic activity of antimicrobial peptide LL-37]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2024; 36:98-104. [PMID: 38604693 DOI: 10.16250/j.32.1374.2023157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Parasitic diseases caused by protozoan and helminth infections are still widespread across the world, notably in tropical and subtropical areas, which threaten the children and adult health. Long-term use of anti-parasitic drugs may result in reduced drug susceptibility and even drug resistance. Antimicrobial peptides have been demonstrated to inhibit parasite growth and development, which has potential antiparasitic values. LL-37, the only human antimicrobial peptide in the cathelicidin family, has been widely investigated. This paper reviews the progress of researches on the antiparasitic activity of LL-37, and discusses the prospects of LL-37 in the research of parasites.
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Affiliation(s)
- J Lou
- School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- National Health Commission Key Laboratory of Parasitic Disease Prevention and Control Technology, Jiangsu Provincial Key Laboratory of Parasites and Vector Control Technology, Jiangsu Institute of Parasitic Diseases, Wuxi, Jiangsu 214064, China
| | - X He
- School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
- National Health Commission Key Laboratory of Parasitic Disease Prevention and Control Technology, Jiangsu Provincial Key Laboratory of Parasites and Vector Control Technology, Jiangsu Institute of Parasitic Diseases, Wuxi, Jiangsu 214064, China
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2
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Yang Y, Alves T, Miao M, Wu Y, Li G, Lou J, Hasturk H, Van Dyke T, Kantarci A, Wu D. Single-Cell Transcriptomic Analysis of Dental Pulp and Periodontal Ligament Stem Cells. J Dent Res 2024; 103:71-80. [PMID: 37982164 PMCID: PMC10850875 DOI: 10.1177/00220345231205283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023] Open
Abstract
The regeneration of periodontal, periapical, and pulpal tissues is a complex process requiring the direct involvement of cells derived from pluripotent stem cells in the periodontal ligament and dental pulp. Dental pulp stem cells (DPSCs) and periodontal ligament stem cells (PDLSCs) are spatially distinct with the potential to differentiate into similar functional and phenotypic cells. We aimed to identify the cell heterogeneity of DPSCs and PDLSCs and explore the differentiation potentials of their specialized organ-specific functions using single-cell transcriptomic analysis. Our results revealed 7 distinct clusters, with cluster 3 showing the highest potential for differentiation. Clusters 0 to 2 displayed features similar to fibroblasts. The trajectory route of the cell state transition from cluster 3 to clusters 0, 1, and 2 indicated the distinct nature of cell differentiation. PDLSCs had a higher proportion of cells (78.6%) at the G1 phase, while DPSCs had a higher proportion of cells at the S and G2/M phases (36.1%), mirroring the lower cell proliferation capacity of PDLSCs than DPSCs. Our study suggested the heterogeneity of stemness across PDLSCs and DPSCs, the similarities of these 2 stem cell compartments to be potentially integrated for regenerative strategies, and the distinct features between them potentially particularized for organ-specific functions of the dental pulp and periodontal ligament for a targeted regenerative dental tissue repair and other regeneration therapies.
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Affiliation(s)
- Y. Yang
- Department of Genetics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - T. Alves
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - M.Z. Miao
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Cell Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Y.C. Wu
- The Forsyth Institute, Cambridge, MA, USA
| | - G. Li
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
- eScience Institute, University of Washington, Seattle, WA, USA
| | - J. Lou
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - H. Hasturk
- The Forsyth Institute, Cambridge, MA, USA
| | | | | | - D. Wu
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Wu C, Zhao L, Ai Q, Risal S, Lou J, Yao Y, Fan Z. In situ Observation of Lithium Stripping and Plating Process in an Open-cell All-solid-state Lithium Metal Battery. Microsc Microanal 2023; 29:1287-1288. [PMID: 37613571 DOI: 10.1093/micmic/ozad067.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- C Wu
- Materials Science and Engineering Program and Texas Center for Superconductivity at the University of Houston, University of Houston, Houston, Texas, United States
| | - L Zhao
- Materials Science and Engineering Program and Texas Center for Superconductivity at the University of Houston, University of Houston, Houston, Texas, United States
- Department of Electrical and Computer Engineering, University of Houston, Houston, Texas, United States
| | - Q Ai
- Department of Materials Science and Nano Engineering, Rice University, Houston, TX, United States
| | - S Risal
- Materials Science and Engineering Program and Texas Center for Superconductivity at the University of Houston, University of Houston, Houston, Texas, United States
| | - J Lou
- Department of Materials Science and Nano Engineering, Rice University, Houston, TX, United States
| | - Y Yao
- Materials Science and Engineering Program and Texas Center for Superconductivity at the University of Houston, University of Houston, Houston, Texas, United States
- Department of Electrical and Computer Engineering, University of Houston, Houston, Texas, United States
| | - Zheng Fan
- Department of Engineering Technology, University of Houston, Houston, TX, United States
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Di Lorenzo E, Xu T, Zhao Y, Newman M, Capotondi A, Stevenson S, Amaya DJ, Anderson BT, Ding R, Furtado JC, Joh Y, Liguori G, Lou J, Miller AJ, Navarra G, Schneider N, Vimont DJ, Wu S, Zhang H. Modes and Mechanisms of Pacific Decadal-Scale Variability. Ann Rev Mar Sci 2023; 15:249-275. [PMID: 36112981 DOI: 10.1146/annurev-marine-040422-084555] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The modes of Pacific decadal-scale variability (PDV), traditionally defined as statistical patterns of variance, reflect to first order the ocean's integration (i.e., reddening) of atmospheric forcing that arises from both a shift and a change in strength of the climatological (time-mean) atmospheric circulation. While these patterns concisely describe PDV, they do not distinguish among the key dynamical processes driving the evolution of PDV anomalies, including atmospheric and ocean teleconnections and coupled feedbacks with similar spatial structures that operate on different timescales. In this review, we synthesize past analysis using an empirical dynamical model constructed from monthly ocean surface anomalies drawn from several reanalysis products, showing that the PDV modes of variance result from two fundamental low-frequency dynamical eigenmodes: the North Pacific-central Pacific (NP-CP) and Kuroshio-Oyashio Extension (KOE) modes. Both eigenmodes highlight how two-way tropical-extratropical teleconnection dynamics are the primary mechanisms energizing and synchronizing the basin-scale footprint of PDV. While the NP-CP mode captures interannual- to decadal-scale variability, the KOE mode is linked to the basin-scale expression of PDV on decadal to multidecadal timescales, including contributions from the South Pacific.
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Affiliation(s)
- E Di Lorenzo
- Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, Rhode Island, USA;
| | - T Xu
- Physical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
| | - Y Zhao
- Deep-Sea Multidisciplinary Research Center, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - M Newman
- Physical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
- Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, Boulder, Colorado, USA
| | - A Capotondi
- Physical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
- Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, Boulder, Colorado, USA
| | - S Stevenson
- Bren School of Environmental Science and Management, University of California, Santa Barbara, California, USA
| | - D J Amaya
- Physical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
| | - B T Anderson
- Department of Earth and Environment, Boston University, Boston, Massachusetts, USA
| | - R Ding
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China
| | - J C Furtado
- School of Meteorology, University of Oklahoma, Norman, Oklahoma, USA
| | - Y Joh
- Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, New Jersey, USA
| | - G Liguori
- Department of Physics and Astronomy, University of Bologna, Bologna, Italy
- School of Earth, Atmosphere, and Environment, Monash University, Melbourne, Victoria, Australia
| | - J Lou
- Physical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
- Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, Boulder, Colorado, USA
| | - A J Miller
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, USA
| | - G Navarra
- Program in Ocean Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - N Schneider
- International Pacific Research Center and Department of Oceanography, University of Hawai'i at Mānoa, Honolulu, Hawaii, USA
| | - D J Vimont
- Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - S Wu
- Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China
| | - H Zhang
- Department of Earth and Atmospheric Sciences, University of Houston, Houston, Texas, USA
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Xu Y, Xu W, Lu Z, Cheung MH, Lin M, Liang C, Lou J, Chen Y. Anti-Gastric Cancer Effect of Purified Omphalia lapidescens Protein via Regulating the JAK/STAT3 Signaling Pathway. Nutr Cancer 2021; 74:1780-1791. [PMID: 34601984 DOI: 10.1080/01635581.2021.1960385] [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: 10/20/2022]
Abstract
Gastric cancer is the leading cause of cancer-related death worldwide. The aim of present study was to investigate the anti-tumor effect of purified Omphalia lapidescens protein (pPeOp) in gastric cancer. Microarray analysis was performed to find out differentially expressed genes in pPeOp-treated MC-4 gastric cancer cells. The Janus kinase (JAK)/signal transducer and activator of transcription (STAT) three signaling pathway was most likely to be altered based on bioinformatics analysis. Interleukin-6 (IL-6) and NSC74859 were used as the agonist and inhibitor of the JAK/STAT3 signaling pathway, respectively. Flow cytometry and MTS assay were used for cell proliferation and viability analysis in pPeOp-treated gastric cancer cell lines with IL-6 or NSC74859. The anti-tumor effect was increased when pPeOp were co-treated with IL-6, while decreased in inhibitor treatment. The expression of the crucial members in the pathway of MC-4 cells, including glycoprotein 130 (GP130), JAK1, JAK2, STAT3, p-STAT3, suppressor of cytokine signaling SOCS1 and SOCS3, was detected by western blotting. pPeOp exhibited promising anticancer effect in the xenograft nude mice model, established by STAT3 knock down gastric cancer cells.Thus, JAK/STAT3 inhibition partially contributed to the anticancer effect of pPeOp, which may serve as a novel strategy for gastric cancer.Supplemental data for this article is available online at https://doi.org/10.1080/01635581.2021.1960385.
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Affiliation(s)
- Yuqin Xu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Wenjun Xu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhongxia Lu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China.,School of Medicine and Pharmacy, Ocean University of China, QingDao, China
| | - Man Hei Cheung
- Division of Life Science, Center for Cancer Research and State Key Lab for Molecular Neural Science, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Meiai Lin
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chun Liang
- School of Medicine and Pharmacy, Ocean University of China, QingDao, China.,EnKang Pharmaceuticals (Guangzhou), Ltd., Guangzhou, China
| | - Jianshu Lou
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province, Holistic Integrative Pharmacy Institutes, School of medicine, Hangzhou Normal University, Hangzhou, China
| | - Yitao Chen
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China.,Division of Life Science, Center for Cancer Research and State Key Lab for Molecular Neural Science, The Hong Kong University of Science and Technology, Hong Kong, China
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Zhai B, Wu Q, Wang W, Zhang M, Han X, Li Q, Chen P, Chen X, Huang X, Li G, Zhang Q, Zhang R, Xiang Y, Liu S, Duan T, Lou J, Xie T, Sui X. Preparation, characterization, pharmacokinetics and anticancer effects of PEGylated β-elemene liposomes. Cancer Biol Med 2021; 17:60-75. [PMID: 32296587 PMCID: PMC7142831 DOI: 10.20892/j.issn.2095-3941.2019.0156] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 08/01/2019] [Indexed: 12/16/2022] Open
Abstract
Objective: This study aimed to develop a new polyethylene glycol (PEG)ylated β-elemene liposome (PEG-Lipo-β-E) and evaluate its characterization, pharmacokinetics, antitumor effects and safety in vitro and in vivo. Methods: The liposomes were prepared by ethanol injection and high-pressure micro-jet homogenization. Characterization of the liposomes was conducted, and drug content, entrapment efficiency (EE), in vitro release and stability were studied by ultra-fast liquid chromatography (UFLC) and a liquid surface method. Blood was drawn from rats to establish the pharmacokinetic parameters. The anticancer effect was evaluated in a KU-19-19 bladder cancer xenograft model. Histological analyses were performed to evaluate safety. Results: The PEG-Lipo-β-E showed good stability and was characterized as 83.31 ± 0.181 nm in size, 0.279 ± 0.004 in polydispersity index (PDI), −21.4 ± 1.06 mV in zeta potential, 6.65 ± 0.02 in pH, 5.024 ± 0.107 mg/mL in β-elemene (β-E) content, and 95.53 ± 1.712% in average EE. The Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) indicated the formation of PEG-Lipo-β-E. Compared to elemene injection, PEG-Lipo-β-E demonstrated a 1.75-fold decrease in clearance, a 1.62-fold increase in half-life, and a 1.76-fold increase in area under the concentration-time curves (AUCs) from 0 hour to 1.5 hours (P < 0.05). PEG-Lipo-β-E also showed an enhanced anticancer effect in vivo. Histological analyses showed that there was no evidence of toxicity to the heart, kidney, liver, lung or spleen. Conclusions: The present study demonstrates PEG-Lipo-β-E as a new formulation with ease of preparation, high EE, good stability, improved bioavailability and antitumor effects.
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Affiliation(s)
- Bingtao Zhai
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.,Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,State Key Laboratory of Quality Research in Chinese Medicines, Faculty of Chinese Medicine, Macau University of Science and Technology, Macau 519020, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Qibiao Wu
- State Key Laboratory of Quality Research in Chinese Medicines, Faculty of Chinese Medicine, Macau University of Science and Technology, Macau 519020, China
| | - Wengang Wang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.,Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Mingming Zhang
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Xuemeng Han
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Qiujie Li
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Peng Chen
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Xiaying Chen
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Xingxing Huang
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China
| | - Guohua Li
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Qin Zhang
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Ruonan Zhang
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Yu Xiang
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Shuiping Liu
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Ting Duan
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Jianshu Lou
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Tian Xie
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.,Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
| | - Xinbing Sui
- Department of Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou 310018, China.,Key Laboratory of Elemene Class Anticancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou 310018, China
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Sun YJ, Lou J, Xu QL, Xing YG, Zhao XZ, Zhao LL, Wang XN. Comparison of clinical diagnostic value of spiral CT with different dose in patients with early-stage peripheral lung cancer. Clin Transl Oncol 2020; 23:1128-1133. [PMID: 33222059 DOI: 10.1007/s12094-020-02503-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 09/15/2020] [Indexed: 10/22/2022]
Abstract
PURPOSE To compare the clinical diagnostic value of spiral CT scan with different dose in patients with early-stage peripheral lung cancer. METHODS A total of 163 cases of patients with early-stage peripheral lung cancer who came to People's Hospital of Rizhao for treatment from June 2014 to January 2017 were retrospectively analyzed. A total of 78 cases of patients who received low-dose CT scanning were the low-dose group, another 84 cases of patients who received routine dose CT scanning were the routine dose group. Multislice helical CT (MSCT) scanning was performed in both groups, with tube voltage of 120 kV. Tube current was 25 m A in the low-dose group and 250 m A in the routine dose group. In addition, a total of 80 patients with lobar pneumonia were added as the control group of diagnostic sensitivity, specificity and accuracy. Pathological diagnosis was taken as the gold standard to compare the diagnostic sensitivity, specificity and accuracy of the two groups. RESULTS The image quality, nodules and signs of the two groups were compared, and the results of radiation dose of the two groups were compared. The diagnostic sensitivity, specificity and accuracy of the low-dose group were 82.05%, 87.50% and 84.81%, respectively. The diagnostic sensitivity, specificity and accuracy of the routine dose group were 85.71%, 86.25% and 85.97%, respectively. The diagnostic value of the two groups was not statistically significant (p > 0.05). However, the radiation dose in the low-dose group was significantly lower than that in the routine group. CONCLUSION Low-dose MSCT scanning can meet the clinical requirements for imaging diagnosis of peripheral lung cancer, and can reduce the radiation dose of patients.
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Affiliation(s)
- Y J Sun
- Department of Radiology, People's Hospital of Rizhao, Rizhao, 276826, People's Republic of China
| | - J Lou
- Department of General Surgery Ward, Jinan Zhangqiu District Hospital of TCM, Jinan, 250200, People's Republic of China
| | - Q L Xu
- Health Care Ward, The People's Hospital of Zhangqiu Area, Jinan, 250200, People's Republic of China
| | - Y G Xing
- Department of Ultrasound, The People's Hospital of Zhangqiu Area, Jinan, 250200, People's Republic of China
| | - X Z Zhao
- Pediatric Ward 2, The People's Hospital of Zhangqiu Area, Jinan, 250200, People's Republic of China
| | - L L Zhao
- Department of Respiratory Medicine, People's Hospital of Rizhao, Rizhao, 276826, People's Republic of China
| | - X N Wang
- Department of Radiology, Qingdao No. 6 People's Hospital, No. 9 Fushun Road, Qingdao, 266033, People's Republic of China.
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Lou J, Tian SJ, Niu SM, Kang XQ, Lian HX, Zhang LX, Zhang JJ. Coronavirus disease 2019: a bibliometric analysis and review. Eur Rev Med Pharmacol Sci 2020; 24:3411-3421. [PMID: 32271460 DOI: 10.26355/eurrev_202003_20712] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE On December 8, 2019, many cases of pneumonia with unknown etiology were first reported in Wuhan, China, subsequently identified as a novel coronavirus infection aroused worldwide concern. As the outbreak is ongoing, more and more researchers focused interest on the COVID-19. Therefore, we retrospectively analyzed the publications about COVID-19 to summarize the research hotspots and make a review, to provide reference for researchers in the world. MATERIALS AND METHODS We conducted a search in PubMed using the keywords "COVID-19" from inception to March 1, 2020. Identified and analyzed the data included title, corresponding author, language, publication time, publication type, research focus. RESULTS 183 publications published from 2020 January 14 to 2020 February 29 were included in the study. The first corresponding authors of the publications were from 20 different countries. Among them, 78 (42.6%) from the hospital, 64 (35%) from the university and 39 (21.3%) from the research institution. All the publications were published in 80 different journals. Journal of Medical Virology published most of them (n=25). 60 (32.8%) were original research, 29 (15.8%) were review, 20 (10.9%) were short communications. 68 (37.2%) epidemiology, 49 (26.8%) virology and 26 (14.2%) clinical features. CONCLUSIONS According to our review, China has provided a large number of research data for various research fields, during the outbreak of COVID-19. Most of the findings play an important role in preventing and controlling the epidemic around the world. With research on the COVID-19 still booming, new vaccine and effective medicine for COVID-19 will be expected to come out in the near future with the joint efforts of researchers worldwide.
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Affiliation(s)
- J Lou
- Beijing Emergency Medicine Research Institute, Beijing Emergency Medical Center, Beijing, China.
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Liu S, Lin H, Wang D, Li Q, Luo H, Li G, Chen X, Li Y, Chen P, Zhai B, Wang W, Zhang R, Chen B, Zhang M, Han X, Li Q, Chen L, Liu Y, Chen X, Li G, Xiang Y, Duan T, Feng J, Lou J, Huang X, Zhang Q, Pan T, Yan L, Jin T, Zhang W, Zhuo L, Sun Y, Xie T, Sui X. PCDH17 increases the sensitivity of colorectal cancer to 5-fluorouracil treatment by inducing apoptosis and autophagic cell death. Signal Transduct Target Ther 2019; 4:53. [PMID: 31815010 PMCID: PMC6882894 DOI: 10.1038/s41392-019-0087-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/27/2019] [Accepted: 10/24/2019] [Indexed: 02/06/2023] Open
Abstract
5-Fluorouracil (5-FU) is known as a first-line chemotherapeutic agent against colorectal cancer (CRC), but drug resistance occurs frequently and significantly limits its clinical success. Our previous study showed that the protocadherin 17 (PCDH17) gene was frequently methylated and functioned as a tumor suppressor in CRC. However, the relationship between PCDH17 and 5-FU resistance in CRC remains unclear. Here, we revealed that PCDH17 was more highly expressed in 5-FU-sensitive CRC tissues than in 5-FU-resistant CRC tissues, and high expression of PCDH17 was correlated with high BECN1 expression. Moreover, this expression profile contributed to superior prognosis and increased survival in CRC patients. Restoring PCDH17 expression augmented the 5-FU sensitivity of CRC in vitro and in vivo by promoting apoptosis and autophagic cell death. Furthermore, autophagy played a dominant role in PCDH17-induced cell death, as an autophagy inhibitor blocked cell death to a greater extent than the pancaspase inhibitor Z-VAD-FMK. PCDH17 inhibition by siRNA decreased the autophagy response and 5-FU sensitivity. Mechanistically, we showed that c-Jun NH2-terminal kinase (JNK) activation was a key determinant in PCDH17-induced autophagy. The compound SP600125, an inhibitor of JNK, suppressed autophagy and 5-FU-induced cell death in PCDH17-reexpressing CRC cells. Taken together, our findings suggest for the first time that PCDH17 increases the sensitivity of CRC to 5-FU treatment by inducing apoptosis and JNK-dependent autophagic cell death. PCDH17 may be a potential prognostic marker for predicting 5-FU sensitivity in CRC patients.
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Affiliation(s)
- Shuiping Liu
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Haoming Lin
- Department of Hepatobiliary Pancreatic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Da Wang
- Department of Colorectal Surgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Qiang Li
- Department of Ultrasound Medicine, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Hong Luo
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Guoxiong Li
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Xiaohui Chen
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Yongqiang Li
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Peng Chen
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Bingtao Zhai
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Wengang Wang
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Ruonan Zhang
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Bi Chen
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Mingming Zhang
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Xuemeng Han
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Qiujie Li
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Liuxi Chen
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Ying Liu
- Department of Medical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Xiaying Chen
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Guohua Li
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Yu Xiang
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Ting Duan
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Jiao Feng
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Jianshu Lou
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Xingxing Huang
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Qin Zhang
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Ting Pan
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Lili Yan
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Ting Jin
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Wenzheng Zhang
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Lvjia Zhuo
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Yitian Sun
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Tian Xie
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang China
| | - Xinbing Sui
- Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center, the Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang China
- Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang China
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
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10
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Li HY, Osman H, Kang CW, Ba T, Lou J. Numerical and experimental studies of water disinfection in UV reactors. Water Sci Technol 2019; 80:1456-1465. [PMID: 31961808 DOI: 10.2166/wst.2019.394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Performance of UV reactors for water disinfection is investigated in this paper. Both experimental and numerical studies are performed on base reactor LP24. Enterobacteria phage MS2 is chosen as the challenge microorganism in the experiments. Experiments are conducted to evaluate the effect of different parameters, i.e. flow rate and UV transmission, on the reactor performance. Simulation is carried out based on the commercial software ANSYS FLUENT with user defined functions (UDFs) implemented. The UDF is programmed to calculate UV dose absorbed by different microorganisms along their flow trajectories. The effect with boundary layer mesh and without boundary layer mesh for LP24 is studied. The results show that the inclusion of boundary layer mesh does not have much effect on the reactor performance in terms of reduction equivalent dose (RED). The numerical results agree well with the experimental measurements, hence validating the numerical model. With this achieved, the numerical model is applied to study other scaled reactors: LP12, LP40, LP60 and LP80. Comparisons show that LP40 has the highest RED and log inactivation among all the reactors while LP80 has the lowest RED and log inactivation.
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Affiliation(s)
- H Y Li
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore E-mail:
| | - H Osman
- Research & Development, Sembcorp Marine Ltd, 80 Tuas South Boulevard, Singapore 637051, Singapore
| | - C W Kang
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore E-mail:
| | - T Ba
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore E-mail:
| | - J Lou
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, 16-16 Connexis, Singapore 138632, Singapore E-mail:
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11
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Gong J, Tian J, Lou J, Wang X, Ke J, Li J, Yang Y, Gong Y, Zhu Y, Zou D, Peng X, Yang N, Mei S, Zhong R, Chang J, Miao X. A polymorphic MYC response element in KBTBD11 influences colorectal cancer risk, especially in interaction with an MYC-regulated SNP rs6983267. Ann Oncol 2019; 29:632-639. [PMID: 29267898 DOI: 10.1093/annonc/mdx789] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background MYC is a well-established cancer driver gene regulating the expression of numerous genes, indicating that polymorphisms in MYC response elements could affect tumorigenesis through altering MYC regulation. We performed integrative multistage study to evaluate the effects of variants in MYC response elements and colorectal cancer (CRC) risk. Patients and methods We systematically integrated ChIP-Seq, DNase-Seq and transcription factor motif data to screen variants with potential ability to affect the MYC binding affinity. Then, we conducted a two-stage case-control study, totally consisting of 4830 CRC cases and 4759 controls in Chinese population to identify risk polymorphisms and interactions. The effects of risk variants were confirmed by functional assays in CRC LoVo, SW480 and HCT15 cells. Results We identified a novel polymorphism rs11777210 in KBTBD11 significantly associated with CRC susceptibility (P = 2.43 × 10-12). Notably, we observed a significant interaction between rs11777210 and MYC nearby rs6983267 (P-multi = 0.003, P-add = 0.005), subjects carrying rs6983267 GG and rs11777210 CC genotypes showing higher susceptibility to CRC (2.83-fold) than those carrying rs6983267 TT and rs11777210 TT genotypes. We further demonstrated that rs6983267 T > G increased MYC expression, and MYC bound to and negatively regulated KBTBD11 expression when the rs11777210 C risk allele was present. KBTBD11 was downregulated in tumor tissues, and KBTBD11 knockdown promoted cell proliferation and inhibited cell apoptosis. Conclusion The rs11777210 is a potential predictive biomarker of CRC susceptibility, and KBTBD11 functions as a putative tumor suppressor in tumorigenesis. Our study highlighted the high CRC risk of people carrying rs6983267 G and rs11777210 C alleles, and provided possible biological mechanism of the interaction.
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Affiliation(s)
- J Gong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Tian
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Lou
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Wang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Ke
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Li
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Yang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Gong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Zhu
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - D Zou
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Peng
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - N Yang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - S Mei
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - R Zhong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Chang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Miao
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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12
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Lou J, Wang L, Weng L, Chen X, Li M, Guo Q, Yu W, Meng Q, Wang H, Wittkop T, Zhao G, Fahem M, Lin S. P1.09-13 Detection of Actionable Mutations in Plasma cfDNA Samples From NSCLC Patients Using a Novel Amplicon-Based Firefly NGS Assay. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Wang H, Du X, Chen WH, Lou J, Xiao HL, Pan YM, Chen H, An N, Zhang QX. Establishment of a Quantitative Polymerase Chain Reaction Assay for Monitoring Chimeric Antigen Receptor T Cells in Peripheral Blood. Transplant Proc 2018; 50:104-109. [PMID: 29407291 DOI: 10.1016/j.transproceed.2017.11.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 09/24/2017] [Accepted: 11/03/2017] [Indexed: 12/30/2022]
Abstract
BACKGROUND The chimeric antigen receptor (CAR) consists of an antigen recognition moiety from a monoclonal antibody fused to an intracellular signalling domain capable of activating T cells. The specific structure of the CAR molecule has been used in various basic research and clinical settings to detect CAR expression, but it is necessary to develop more specific and simpler monitoring methods to observe real-time changes. MATERIALS AND METHODS To develop a quantitative assay for the universal detection of DNA from anti-CD19 CAR-T cells, a TaqMan real-time quantitative polymerase chain reaction (qPCR) assay was developed using primers based on FMC63-28Z gene sequences. We identified the numbers of copies of CAR gene on T cells transduced with the CAR gene that were obtained from peripheral blood. RESULTS The assay had a minimum detection limit of 10 copies/μL and a strong linear standard curve (y = -3.3682x + 38.594; R2 = 0.999) within the range of the input CAR gene (10-107 copies/μL). The reproducibility test showed a coefficient of variation ranging from 0.63%-1.65%. Real-time qPCR is a highly sensitive, specific, reproducible, and universal method that can be used to detect anti-CD19 CAR-T cells in peripheral blood.
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Affiliation(s)
- H Wang
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China; Guangzhou Medical University, Guangzhou, China
| | - X Du
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - W-H Chen
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - J Lou
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - H-L Xiao
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China; Guangzhou Medical University, Guangzhou, China
| | - Y-M Pan
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - H Chen
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - N An
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Q-X Zhang
- Shenzhen Bone Marrow Transplantation Public Service Platform, Shenzhen Institute of Hematology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China.
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14
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Yan L, Wei M, Gong AG, Song P, Lou J, Bi CW, Xu SL, Xiong A, Dong TT, Tsim KW. A Modified Chinese Herbal Decoction (Kai-Xin-San) Promotes NGF-Induced Neuronal Differentiation in PC12 Cells via Up-Regulating Trk A Signaling. Front Cell Dev Biol 2017; 5:118. [PMID: 29312939 PMCID: PMC5744097 DOI: 10.3389/fcell.2017.00118] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 12/11/2017] [Indexed: 02/04/2023] Open
Abstract
Kai-Xin-San (KXS), a Chinese herbal decoction, has been applied to medical care of depression for thousands of years. It is composed of two functional paired-herbs: Ginseng Radix et Rhizoma (GR)-Polygalae Radix (PR) and Acori Tatarinowii Rhizoma (ATR)-Poria (PO). The compatibility of the paired-herbs has been frequently changed to meet the criteria of syndrome differentiation and treatment variation. Currently, a modified KXS (namely KXS2012) was prepared by optimizing the combinations of GR-PR and ATR-PO: the new herbal formula was shown to be very effective in animal studies. However, the cellular mechanism of KXS2012 against depression has not been fully investigated. Here, the study on KXS2012-induced neuronal differentiation in cultured PC12 cells was analyzed. In PC12 cultures, single application of KXS2012 showed no effect on the neuronal differentiation, but which showed robust effects in potentiating nerve growth factor (NGF)-induced neurite outgrowth and neurofilament expression. The potentiating effect of KXS2012 was mediated through NGF receptor, tropomyosin receptor kinase (Trk) A: because the receptor expression and activity was markedly up-regulated in the presence of KXS2012, and the potentiating effect was blocked by k252a, an inhibitor of Trk A. Our current results in cell cultures fully support the therapeutic efficacy of KXS2012 against depression.
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Affiliation(s)
- Lu Yan
- Shenzhen Research Institute, Hong Kong University of Science and Technology, Shenzhez, China.,Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden Mem. Sun Yat-Sen, Nanjing, China.,Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China.,Division of Life Science and Center for Chinese Medicine, Hong Kong University of Science and Technology, Hong Kong, China
| | - Min Wei
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden Mem. Sun Yat-Sen, Nanjing, China.,Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China
| | - Amy G Gong
- Shenzhen Research Institute, Hong Kong University of Science and Technology, Shenzhez, China.,Division of Life Science and Center for Chinese Medicine, Hong Kong University of Science and Technology, Hong Kong, China
| | - Pingping Song
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden Mem. Sun Yat-Sen, Nanjing, China.,Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China
| | - Jianshu Lou
- Shenzhen Research Institute, Hong Kong University of Science and Technology, Shenzhez, China.,Division of Life Science and Center for Chinese Medicine, Hong Kong University of Science and Technology, Hong Kong, China
| | - Cathy W Bi
- Shenzhen Research Institute, Hong Kong University of Science and Technology, Shenzhez, China.,Division of Life Science and Center for Chinese Medicine, Hong Kong University of Science and Technology, Hong Kong, China
| | - Sherry L Xu
- Division of Life Science and Center for Chinese Medicine, Hong Kong University of Science and Technology, Hong Kong, China
| | - Aizhen Xiong
- Division of Life Science and Center for Chinese Medicine, Hong Kong University of Science and Technology, Hong Kong, China
| | - Tina T Dong
- Shenzhen Research Institute, Hong Kong University of Science and Technology, Shenzhez, China.,Division of Life Science and Center for Chinese Medicine, Hong Kong University of Science and Technology, Hong Kong, China
| | - Karl W Tsim
- Shenzhen Research Institute, Hong Kong University of Science and Technology, Shenzhez, China.,Division of Life Science and Center for Chinese Medicine, Hong Kong University of Science and Technology, Hong Kong, China
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15
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Zhou Q, Wang L, Huang J, Liao M, Jian H, Lou J, Lu S, Luo Q. PUB044 Diagnostic Value of FR+-CTCs Detected by LT-PCR for Lung Cancer in SPN and Tumor Invasiveness in Adenocarcinoma (T≪3cm). J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Gajate N, Tufail A, Lightman S, Kamal A, Pleyer U, Dot C, Li X, Jiao J, Lou J, Hashad Y. Post-marketing surveillance study of the safety of dexamethasone intravitreal implant (DEX) in patients with retinal vein occlusion (RVO) or noninfectious posterior segment uveitis (NIPSU). Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.0t083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- N.M. Gajate
- Servicio de Oftalmología; Hospital Universitario de Burgos; Burgos Spain
| | - A. Tufail
- Ophthalmology; Moorfields Eye Hospital; London UK
| | - S. Lightman
- Ophthalmology; Moorfields Eye Hospital; London UK
| | - A. Kamal
- Ophthalmology; Aintree University Hospital; Liverpool UK
| | - U. Pleyer
- Ophthalmology; Charite Universitätsmedizin Berlin; Berlin Germany
| | - C. Dot
- Ophthalmology; Ophtalmologie - Hôpital Desgenettes; Lyon France
| | - X.Y. Li
- Clinical Development; Allergan plc Irvine USA
| | - J. Jiao
- Biostatistics; Allergan plc; Irvine USA
| | - J. Lou
- Clinical Development; Allergan plc Irvine USA
| | - Y. Hashad
- Clinical Development; Allergan plc Irvine USA
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17
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Qian F, Yang W, Wang H, Teng J, Zhang Y, Chen Q, Ye J, Lou J, Shi R, Jiang L, Gu A, Zhao Y, Jin B, Zhang X, Xu J, Lou Y, Han B. Community-based lung cancer screening of high-risk population with low-dose computed tomography in China. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx383.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Lyu Y, Lou J, Yang Y, Feng J, Hao Y, Huang S, Yin L, Xu J, Huang D, Ma B, Zou D, Wang Y, Zhang Y, Zhang B, Chen P, Yu K, Lam EWF, Wang X, Liu Q, Yan J, Jin B. Dysfunction of the WT1-MEG3 signaling promotes AML leukemogenesis via p53-dependent and -independent pathways. Leukemia 2017; 31:2543-2551. [PMID: 28400619 PMCID: PMC5729340 DOI: 10.1038/leu.2017.116] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [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: 08/26/2016] [Revised: 03/16/2017] [Accepted: 04/04/2017] [Indexed: 12/14/2022]
Abstract
Long non-coding RNAs (lncRNAs) play a pivotal role in tumorigenesis, exemplified by the recent finding that lncRNA maternally expressed gene 3 (MEG3) inhibits tumor growth in a p53-dependent manner. Acute myeloid leukemia (AML) is the most common malignant myeloid disorder in adults, and TP53 mutations or loss are frequently detected in patients with therapy-related AML or AML with complex karyotype. Here, we reveal that MEG3 is significantly downregulated in AML and suppresses leukemogenesis not only in a p53-dependent, but also a p53-independent manner. In addition, MEG3 is proven to be transcriptionally activated by Wilms’ tumor 1 (WT1), dysregulation of which by epigenetic silencing or mutations is causally involved in AML. Therefore MEG3 is identified as a novel target of the WT1 molecule. Ten–eleven translocation-2 (TET2) mutations frequently occur in AML and significantly promote leukemogenesis of this disorder. In our study, TET2, acting as a cofactor of WT1, increases MEG3 expression. Taken together, our work demonstrates that TET2 dysregulated WT1-MEG3 axis significantly promotes AML leukemogenesis, paving a new avenue for diagnosis and treatment of AML patients.
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Affiliation(s)
- Y Lyu
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,Department of Hematology, the Second Affiliated Hospital, Institute of Hematopoeitic Stem Cell Transplantation of Dalian Medical University, Liaoning Hematopoeitic Stem Cell Transplantation Medical Center, Dalian Key Laboratory of Hematology, Dalian Medical University, Dalian, China
| | - J Lou
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,Department of Neurosurgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Y Yang
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,Department of Hematology, the Second Affiliated Hospital, Institute of Hematopoeitic Stem Cell Transplantation of Dalian Medical University, Liaoning Hematopoeitic Stem Cell Transplantation Medical Center, Dalian Key Laboratory of Hematology, Dalian Medical University, Dalian, China
| | - J Feng
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Y Hao
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - S Huang
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - L Yin
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,Department of Hematology, the Second Affiliated Hospital, Institute of Hematopoeitic Stem Cell Transplantation of Dalian Medical University, Liaoning Hematopoeitic Stem Cell Transplantation Medical Center, Dalian Key Laboratory of Hematology, Dalian Medical University, Dalian, China
| | - J Xu
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - D Huang
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,Department of Hematology, the Second Affiliated Hospital, Institute of Hematopoeitic Stem Cell Transplantation of Dalian Medical University, Liaoning Hematopoeitic Stem Cell Transplantation Medical Center, Dalian Key Laboratory of Hematology, Dalian Medical University, Dalian, China
| | - B Ma
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,Department of Neurosurgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - D Zou
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Y Wang
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,Department of Hematology, the Second Affiliated Hospital, Institute of Hematopoeitic Stem Cell Transplantation of Dalian Medical University, Liaoning Hematopoeitic Stem Cell Transplantation Medical Center, Dalian Key Laboratory of Hematology, Dalian Medical University, Dalian, China
| | - Y Zhang
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - B Zhang
- Department of Neurosurgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - P Chen
- Department of Obstetrics and Gynecology, the Second Xiangya Hospital, Central South University, Changsha, China
| | - K Yu
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, GA, USA
| | - E W-F Lam
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - X Wang
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - Q Liu
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
| | - J Yan
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China.,Department of Hematology, the Second Affiliated Hospital, Institute of Hematopoeitic Stem Cell Transplantation of Dalian Medical University, Liaoning Hematopoeitic Stem Cell Transplantation Medical Center, Dalian Key Laboratory of Hematology, Dalian Medical University, Dalian, China
| | - B Jin
- Department of Hematology, the Second Affiliated Hospital, Institute of Cancer Stem Cell, Cancer Center, Dalian Medical University, Dalian, China
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19
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Zhang M, Zhao X, Fang Z, Niu Y, Lou J, Wu Y, Zou S, Xia S, Sun M, Du F. Fabrication of HA/PEI-functionalized carbon dots for tumor targeting, intracellular imaging and gene delivery. RSC Adv 2017. [DOI: 10.1039/c6ra26048a] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Carbon quantum dots (CDs) as emerging carbon nano-materials have attracted tremendous attention in biomedical fields due to unique properties.
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Affiliation(s)
- M. Zhang
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - X. Zhao
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Z. Fang
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Y. Niu
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - J. Lou
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Y. Wu
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - S. Zou
- Department of Hepatosis
- The Third Hospital of Zhenjiang Affiliated to Jiangsu University
- Zhenjiang
- P. R. China
| | - S. Xia
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - M. Sun
- Department of Clinical Laboratory
- Affiliated Yancheng Hospital
- School of Medicine
- Southeast University
- Yancheng
| | - F. Du
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
- Department of Hepatosis
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20
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Yan L, Hu Q, Mak MSH, Lou J, Xu SL, Bi CWC, Zhu Y, Wang H, Dong TTX, Tsim KWK. A Chinese herbal decoction, reformulated from Kai-Xin-San, relieves the depression-like symptoms in stressed rats and induces neurogenesis in cultured neurons. Sci Rep 2016; 6:30014. [PMID: 27444820 PMCID: PMC4957105 DOI: 10.1038/srep30014] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 06/29/2016] [Indexed: 12/26/2022] Open
Abstract
Kai-Xin-San (KXS), a Chinese herbal decoction for anti-depression, is a combination of paired-herbs, i.e. Ginseng Radix et Rhizoma (GR)-Polygalae Radix (PR) and Acori Tatarinowii Rhizoma (ATR)-Poria (PO). The make-up of the paired-herbs has been commonly revised according to syndrome differentiation and treatment variation of individual. Currently, an optimized KXS (KXS2012) was prepared by functional screening different combination of GR-PR and ATR-PO. The aim of this study was to verify the effect and underlying mechanism of KXS2012 against depression in chronic mild stress (CMS)-induced depressive rats and in primary cultures of neurons and astrocytes. In rat model, the CMS-induced depressive symptoms were markedly alleviated by the treatment with KXS2012. The CMS-suppressed neurotransmitter amounts were restored in the presence of KXS2012. And the expressions of neurotropic factors and its corresponding receptors were increased under KXS2012 administration. In cultured neurons, application of KXS2012 could promote neurogenesis by inducing the expression of synaptotagmin and dendritic spine density. Moreover, application of KXS2012 in cultured astrocytes, or in H2O2-stressed astrocytes, induced the expressions of neurotrophic factors: the increase might be associated with the modification of Erk1/2 and CREB phosphorylation. Our current results fully support the therapeutic efficacy of KXS2012 against depression in cell and animal models.
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Affiliation(s)
- Lu Yan
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, 518057, China
| | - Qinghua Hu
- College of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Marvin S. H. Mak
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Jianshu Lou
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Sherry L. Xu
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Cathy W. C. Bi
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, 518057, China
| | - Yue Zhu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China
| | - Huaiyou Wang
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, 518057, China
| | - Tina T. X. Dong
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, 518057, China
| | - Karl W. K. Tsim
- Division of Life Science, Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, 518057, China
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21
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Xie TY, Yan W, Lou J, Chen XY. Effect of ozone on vascular endothelial growth factor (VEGF) and related inflammatory cytokines in rats with diabetic retinopathy. Genet Mol Res 2016; 15:gmr7558. [PMID: 27323014 DOI: 10.4238/gmr.15027558] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to investigate the effect of ozone on inflammatory cytokines in diabetic retinopathy (DR) rats. Male rats (40) weighing 300-360 g were included in this study. Thirty rats were randomly divided into the model and ozone groups after DR was induced by streptozotocin. Ten rats served as the blank group. After the diabetic models were established for one month, the rats in the ozone group were treated with 50 mg/kg ozone coloclysis for one month (three times a week). After the rats were anesthetized by intraperitoneal injection, blood samples from the abdominal aorta were collected, and the supernatant was obtained by centrifugation. Vascular endothelial growth factor (VEGF) and inflammatory cytokine content in the serum was detected by enzyme linked immunosorbent assay. The values of VEGF, intercellular cell adhesion molecule-1, interleukin-1 beta, tumor necrosis factor-a, and IL-6 were significantly different among the three groups (P < 0.05). The cytokine levels in the model group were higher than those in the blank group (P < 0.05). The level of each cytokine in the ozone group was higher than that in the blank group. Compared with the model group, the cytokine levels in the ozone group were significantly reduced (P < 0.05). Ozone had no effect on the blood glucose of diabetic rats. Treatment with ozone coloclysis may effectively reduce the secretion of VEGF and inflammatory cytokines in diabetic retinopathy rats.
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Affiliation(s)
- T Y Xie
- Department of Ophthalmology, The First Affiliated Hospital of Xinjiang Medical University, Urumchi, China
| | - W Yan
- Department of Ophthalmology, The First Affiliated Hospital of Xinjiang Medical University, Urumchi, China
| | - J Lou
- Department of Ophthalmology, The First Affiliated Hospital of Xinjiang Medical University, Urumchi, China
| | - X Y Chen
- Department of Ophthalmology, The First Affiliated Hospital of Xinjiang Medical University, Urumchi, China
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22
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Abid I, Bohloul A, Najmaei S, Avendano C, Liu HL, Péchou R, Mlayah A, Lou J. Resonant surface plasmon-exciton interaction in hybrid MoSe2@Au nanostructures. Nanoscale 2016; 8:8151-9. [PMID: 27029770 DOI: 10.1039/c6nr00829a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In this work we investigate the interaction between plasmonic and excitonic resonances in hybrid MoSe2@Au nanostructures. The latter were fabricated by combining chemical vapor deposition of MoSe2 atomic layers, Au disk processing by nanosphere lithography and a soft lift-off/transfer technique. The samples were characterized by scanning electron and atomic force microscopy. Their optical properties were investigated experimentally using optical absorption, Raman scattering and photoluminescence spectroscopy. The work is focused on a resonant situation where the surface plasmon resonance is tuned to the excitonic transition. In that case, the near-field interaction between the surface plasmons and the confined excitons leads to interference between the plasmonic and excitonic resonances that manifests in the optical spectra as a transparency dip. The plasmonic-excitonic interaction regime is determined using quantitative analysis of the optical extinction spectra based on an analytical model supported by numerical simulations. We found that the plasmonic-excitonic resonances do interfere thus leading to a typical Fano lineshape of the optical extinction. The near-field nature of the plasmonic-excitonic interaction is pointed out experimentally from the dependence of the optical absorption on the number of monolayer stacks on the Au nanodisks. The results presented in this work contribute to the development of new concepts in the field of hybrid plasmonics.
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Affiliation(s)
- I Abid
- Centre d'Elaboration de Matériaux et d'Etudes Structurales, UPR 8011, CNRS-Université de Toulouse, 29 rue Jeanne Marvig, BP 94347, F-31055 Toulouse, France.
| | - A Bohloul
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA.
| | - S Najmaei
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA. and United States Army Research Laboratories, Sensors and Electron Devices Directorate, 2800, Powder Mill Road, Adelphi, MD 20783, USA
| | - C Avendano
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA.
| | - H-L Liu
- Department of Physics, National Taiwan Normal University, Taipei 11677, Taiwan
| | - R Péchou
- Centre d'Elaboration de Matériaux et d'Etudes Structurales, UPR 8011, CNRS-Université de Toulouse, 29 rue Jeanne Marvig, BP 94347, F-31055 Toulouse, France.
| | - A Mlayah
- Centre d'Elaboration de Matériaux et d'Etudes Structurales, UPR 8011, CNRS-Université de Toulouse, 29 rue Jeanne Marvig, BP 94347, F-31055 Toulouse, France.
| | - J Lou
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, USA.
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23
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Lou J, Mai X, Lozoff B, Felt BT, Kileny PR, Zhao Z, Shao J. Prenatal Iron Deficiency and Auditory Brainstem Responses at 3 and 10 Months: A Pilot Study. Hong Kong J Paediatr 2016; 20:71-79. [PMID: 26500419 PMCID: PMC4613755] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
PURPOSE To examine whether prenatal iron deficiency delays auditory brainstem response (ABR) maturation in infancy. METHODS One hundred and fifteen full-term healthy Chinese infants with maternal and cord blood haemoglobin and serum ferritin determinations were recruited into this study. Forty-eight infants received ABR testing at 3 months, and 45 infants were tested at 10 months. Comparison of the ABR variables were made between infants with and those without evidence of prenatal iron deficiency (maternal 3rd trimester haemoglobin <110 g/L, cord blood ferritin <75 μg/L); or anaemia at 10 months (haemoglobin <110 g/L). RESULTS Latencies for wave V and wave III-V and I-V intervals were prolonged at 3 months in infants of anaemic mothers (effect sizes 1.02-1.19 SD). At 10 months, infants with low cord blood serum ferritin (indicating low iron stores at birth) showed longer wave I latency and possibly wave V latency also, besides demonstrating a smaller wave V amplitude (effect sizes 0.58-0.62 SD). Infants with low ferritin at birth and anemia at 10 months had longer wave III-V latency than other groups. CONCLUSION In full-term healthy infants, prenatal iron deficiency appears to have adverse effects on the developing central nervous system and auditory system as assessed by ABRs at 3 and/or 10 months.
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Affiliation(s)
- J Lou
- Department of Gastroenterology, Children's Hospital Zhejiang University School of Medicine, 57 Zhugan Xiang Road, Hangzhou, Zhejiang 310003, China
| | - X Mai
- Center for Human Growth and Development, University of Michigan, 300 North Ingalls Street, Ann Arbor, MI 48109, United States
| | - B Lozoff
- Center for Human Growth and Development, University of Michigan, 300 North Ingalls Street, Ann Arbor, MI 48109, United States
| | - B T Felt
- Center for Human Growth and Development, University of Michigan, 300 North Ingalls Street, Ann Arbor, MI 48109, United States
| | - P R Kileny
- Department of Otorhinolaryngology, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, MI 48109, United States
| | - Z Zhao
- Department of Child Health Care, Children's Hospital Zhejiang University School of Medicine, 57 Zhugan Xiang Road, Hangzhou, Zhejiang 310003, China
| | - J Shao
- Department of Child Health Care, Children's Hospital Zhejiang University School of Medicine, 57 Zhugan Xiang Road, Hangzhou, Zhejiang 310003, China
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24
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Zhang M, Fang Z, Zhao X, Niu Y, Lou J, Zhao L, Wu Y, Zou S, Du F, Shao Q. Hyaluronic acid functionalized nitrogen-doped carbon quantum dots for targeted specific bioimaging. RSC Adv 2016. [DOI: 10.1039/c6ra22210b] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [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] Open
Abstract
Schematic illustration of the preparation of HA-CQDs (A) and the following bioimaging application (B).
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Affiliation(s)
- M. Zhang
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Z. Fang
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - X. Zhao
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Y. Niu
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - J. Lou
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - L. Zhao
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Y. Wu
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
| | - S. Zou
- Department of Hepatosis
- The Third Hospital of Zhenjiang Affiliated to Jiangsu University
- Zhenjiang
- P. R. China
| | - F. Du
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
- Department of Hepatosis
| | - Q. Shao
- School of Medicine
- Jiangsu University
- Zhenjiang
- P. R. China
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Zhu YL, Lou J, Guo JY, Huang Z, Lv SW. A meta analysis of cetuximab plus oxaliplatin based chemotherapy regimen for metastatic colorectal cancer. Indian J Cancer 2015; 51 Suppl 3:e113-6. [PMID: 25818736 DOI: 10.4103/0019-509x.154101] [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: 11/04/2022]
Abstract
BACKGROUND Oxaliplatin based chemotherapy regimen was one of the most used chemotherapy modality for metastatic colorectal cancer. The purpose of this meta-analysis was to assess the clinical activity and toxicities of cetuximab plus oxaliplatin-based chemotherapy regimen for metastatic colorectal Cancer. METHODS We searched the clinical studies about the cetuximab plus oxaliplatin-based chemotherapy regimen versus oxaliplatin-based chemotherapy alone for metastatic colorectal cancer in the databases of PubMed, EMBASE, Cochran, and CNKI. The data of response and toxicities were extracted and pooled by random or fixed effects model. And publication bias was evaluated by begg's funnel plot and egger's regression test. RESULTS Seven papers were included in this study. Adding cetuximab to oxaliplatin-based chemotherapy regime can significant increase response rate in K-RAS mutation metastatic colorectal patients (odds ratio [OR]: 1.45, 95% confidence interval [CI]: 1.17-1.80, Z = 3.38, P = 0.001) and metastatic colorectal patients without knowing the K-RAS status (OR: 1.36, 95% CI: 1.11-1.65, Z = 1.89, P = 0.003). But for patients with mutated K-RAS, the improvement for objective response rate was not statistical significant (OR: 0.70, 95% CI: 0.49-1.01, Z = 3.00, P = 0.058) when adding cetuximab to oxaliplatin-based chemotherapy regime. The pooled results indicating the rash and diarrhea risk was significantly increased in the combined treatment group (P < 0.05). The toxicity of peripheral neuritis was decreased by adding the cetuximab (P < 0.05). And other toxicities were not statistical different between the two groups (P > 0.05). Significant publication bias was found in toxicities evaluation. CONCLUSION Cetuximab plus oxaliplatin-based chemotherapy regimen significant increase the response rate for metastatic colorectal cancer. But the some toxicities such rash and diarrhea risk was also increased.
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Affiliation(s)
| | | | | | | | - S W Lv
- Department of Clinical Pharmacy, The Central Hospital of Jinhua City, Jinhua Zhejiang Province 321000, China
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26
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Guan YX, Chen Q, Wan SH, Huang JS, Yang XQ, Pan LJ, Zhang QI, Zhang Q, Ou YJ, Peng XW, Liu SZ, Chen QJ, Lou J. Effect of different time phases of radionuclide hepatobiliary scintigraphy on the differential diagnosis of congenital biliary atresia. Genet Mol Res 2015; 14:3862-8. [PMID: 25966156 DOI: 10.4238/2015.april.22.15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
To investigate the value and essentiality of 6- and 24-h delay hepatobiliary scintigraphy in the differential diagnosis of biliary atresia (BA), we retrospectively analyzed 197 infants (121 boys/76 girls; age range, 3-205 days; average age, 63.9 days) admitted to Jiangxi Children's Hospital for persistent jaundice (> 2 weeks), hepatosplenomegaly, and abnormal liver function. After receiving anti-inflammatory treatment and cholagogic pre-treatment for 7-10 days without a clear diagnosis, the children underwent 99mTc-labeled diethylacetanilide-iminodiacetic acid hepatobiliary scintigraphy. BA and infant hepatitis syndrome were diagnosed in 107 and 90 infants, respectively after laparoscopic cholangiography, surgical pathology, or 6-month clinical follow-up. The diagnostic efficiencies of hepatobiliary scintigraphy for BA were evaluated within 50 min and at 6 and 24 h. The areas under the receiver operating characteristic curves within 50 min, at 6 and 24 h were 0.696, 0.829 , and 0.779 , suggesting poor diagnostic value within 50 min, but improvement at 6 and 24 h. The compliance rate of 6- and 24-h imaging for BA diagnosis was 89.34% (176/197; paired chi-square test Kappa value, 0.77; P > 0.05), signifying high consistency. The diagnostic efficiency values of 6-/24-h imaging for BA diagnosis were sensitivity (90.65/89.72%), specificity (74.44/78.89%), accuracy (83.25/84.77%), positive and negative predictive values (80.83/83.48% and 87.01/86.59%), with no significant difference (P > 0.05). To provide optimal treatment in early BA, the- 6-h hepatobiliary scintigraphy had practical value, especially when combined with tomographic or dynamic imaging; 24-h delay imaging was deemed unnecessary because it was not significantly superior.
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Affiliation(s)
- Y X Guan
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Q Chen
- Children's Hospital of Jiangxi Province, Jiangxi, China
| | - S H Wan
- Children's Hospital of Jiangxi Province, Jiangxi, China
| | - J S Huang
- Children's Hospital of Jiangxi Province, Jiangxi, China
| | - X Q Yang
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - L J Pan
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Q I Zhang
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Q Zhang
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Y J Ou
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - X W Peng
- Children's Hospital of Jiangxi Province, Jiangxi, China
| | - S Z Liu
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Q J Chen
- The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - J Lou
- The First Affiliated Hospital of Nanchang University, Nanchang, China
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Subramanian A, Hudak NS, Huang JY, Zhan Y, Lou J, Sullivan JP. On-chip lithium cells for electrical and structural characterization of single nanowire electrodes. Nanotechnology 2014; 25:265402. [PMID: 24919450 DOI: 10.1088/0957-4484/25/26/265402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a transmission electron microscopy (TEM)-compatible, hybrid nanomachined, on-chip construct for probing the structural and electrical changes in individual nanowire electrodes during lithium insertion. We have assembled arrays of individual β-phase manganese dioxide (β-MnO2) nanowires (NWs), which are employed as a model material system, into functional electrochemical cells through a combination of bottom-up (dielectrophoresis) and top-down (silicon nanomachining) unit processes. The on-chip NWs are electrochemically lithiated inside a helium-filled glovebox and their electrical conductivity is studied as a function of incremental lithium loading during initial lithiation. We observe a dramatic reduction in NW conductivity (on the order of two to three orders in magnitude), which is not reversed when the lithium is extracted from the nanoelectrode. This conductivity change is attributed to an increase in lattice disorder within the material, which is observed from TEM images of the lithiated NWs. Furthermore, electron energy loss spectroscopy (EELS) was employed to confirm the reduction in valence state of manganese, which occurs due to the transformation of MnO2 to LixMnO2.
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Affiliation(s)
- A Subramanian
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA. Sandia National Laboratories, Albuquerque, NM 87185, USA
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Zheng L, Fu Y, Zhuang L, Gai R, Ma J, Lou J, Zhu H, He Q, Yang B. Simultaneous NF-κB inhibition and E-cadherin upregulation mediate mutually synergistic anticancer activity of celastrol and SAHA in vitro and in vivo. Int J Cancer 2014; 135:1721-32. [PMID: 24615207 DOI: 10.1002/ijc.28810] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 02/13/2014] [Indexed: 12/31/2022]
Abstract
Suberoylanilide hydroxamic acid (SAHA) is a promising histone deacetylase (HDAC) inhibitor approved by the US Food and Drug Administration (FDA) and whose clinical application for solid tumours is partially limited by decreased susceptibility in cancer cells due to nuclear factor (NF)-κB activation. As an NF-κB inhibitor, celastrol exhibits potent anticancer effects but has failed to enter clinical trials due to its toxicity. In this report, we demonstrated that the combination of celastrol and SAHA exerted substantial synergistic efficacy against human cancer cells in vitro and in vivo accompanied by enhanced caspase-mediated apoptosis. This drug combination inhibited the activation of NF-κB caused by SAHA monotherapy and consequently led to increased apoptosis in cancer cells. Interestingly, E-cadherin was dramatically downregulated in celastrol-resistant cancer cells, and E-cadherin expression was closely related to decreased sensitivity to celastrol. However, our combination treatment significantly augmented the expression of E-cadherin, suggesting that mutual mechanisms contributed to the synergistic anticancer activity. Furthermore, the enhanced anticancer efficacy of celastrol combined with SAHA was validated in a human lung cancer 95-D xenograft model without increased toxicity. Taken together, our data demonstrated the synergistic anticancer effects of celastrol and SAHA due to their reciprocal sensitisation, which was simultaneously regulated by NF-κB and E-cadherin; thus, the combination of celastrol and SAHA was superior to other combination regimens that rely on a single mechanism. Our findings not only open new opportunities for the clinical development of SAHA but should also motivate the clinical investigation of celastrol, which has been hampered by its toxicity.
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Affiliation(s)
- Lin Zheng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
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Wu Y, Fu Y, Zheng L, Lin G, Ma J, Lou J, Zhu H, He Q, Yang B. Nutlin-3 inhibits epithelial–mesenchymal transition by interfering with canonical transforming growth factor-β1-Smad-Snail/Slug axis. Cancer Lett 2014; 342:82-91. [DOI: 10.1016/j.canlet.2013.08.039] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 07/31/2013] [Accepted: 08/22/2013] [Indexed: 11/25/2022]
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Zhao JC, Gu YJ, Lou J, Tang BHJ, Zheng J, Xu JL. Rheological phase synthesis and electrochemical performance of Co3O4 for supercapacitors. RUSS J ELECTROCHEM+ 2013. [DOI: 10.1134/s1023193513110141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Najmaei S, Ajayan PM, Lou J. Quantitative analysis of the temperature dependency in Raman active vibrational modes of molybdenum disulfide atomic layers. Nanoscale 2013; 5:9758-63. [PMID: 23963480 DOI: 10.1039/c3nr02567e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Raman spectroscopy is utilized to quantify the temperature dependency of the vibrational modes in molybdenum disulfide (MoS2) atomic layers. These analyses are essential for understanding the structural properties and phononic behaviors of this two-dimensional (2D) material. We quantitatively analyze the temperature dependent shifts of the Raman peak positions in the temperature range from 300 to 550 K, and find that both planar and out-of-plane characteristic modes are highly sensitive to temperature variations. This temperature dependency is linear and can be fully explained by the first-order temperature coefficient. Using a semi-quantitative model, we evaluate the contributions of the material's thermal expansion and intrinsic temperature effects to this dependency. We reveal that the dominating source of shift in the peak position of planar mode E2g(1) for samples of all thicknesses investigated is the four-phonon process. In addition to the four-phonon process, thermal expansion plays a significant role in the temperature dependency of the out-of-plane mode, A1g. The thickness dependency of the temperature coefficient for MoS2 and a drastic change in behaviors of samples from bi- to single-layered are also demonstrated. We further explore the role of defects in the thermal properties of MoS2 by examining the temperature dependency of Raman modes in CVD-grown samples.
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Affiliation(s)
- Sina Najmaei
- Department of Mechanical Engineering & Materials Science, Rice University, Houston, Texas 77005, USA.
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Zhang J, Lu H, Sun Y, Ci L, Ajayan PM, Lou J. Humidity effects on anisotropic nanofriction behaviors of aligned carbon nanotube carpets. ACS Appl Mater Interfaces 2013; 5:9501-9507. [PMID: 24004024 DOI: 10.1021/am402221u] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We evaluated the interfacial properties of vertically and transversely aligned multiwalled carbon nanotubes (CNTs) carpets using atomic force microscopy (AFM) under ambient (26%-52% relative humidity (RH)), mild (10% RH), and dry conditions (<3.3% RH). The frictional forces on a transversely aligned CNT (TAMWCNT) surface are lower than those on a vertically aligned CNT (VAMWCNT) surface, and they decrease as the relative humidity decreases for both TAMWCNT and VAMWCNT surfaces. Similar trends are found for adhesion forces on both surfaces. Contact mechanics theories are applied and compared in an attempt to better understand these results. The tribological behavior of CNT carpets unveiled in this paper is expected to inspire tunable friction surface engineering strategies.
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Affiliation(s)
- J Zhang
- Department of Mechanical Engineering and Materials Science, Rice University , Houston, Texas 77005, United States
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Fan Y, Lou J, Garcia C, Zhai W, Dong J, Wen W, Conrad F, Brown J, Skerry J, Smith T, Smith L, Marks J. Monoclonal antibodies against botulinum neurotoxin serotype F. Toxicon 2013. [DOI: 10.1016/j.toxicon.2012.07.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sun Z, Lou J, Cheng L, Smith T, Dong J, Wen W, Conrad F, Garcia C, Fan Y, Henderson T, Brown J, Skerry J, Smith L, Harrison T, D'Andrea A, Tomic M, Marks J. Comparison of neutralizing abilities of human monoclonal antibodies binding different epitopes on botulinum neurotoxin A. Toxicon 2013. [DOI: 10.1016/j.toxicon.2012.07.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Meng Q, Garcia C, Silberg M, Manzanarez G, Lou J, Fan Y, Conrad F, Li M, Freeberg J, Bettencourt J, Breece T, Pan X, Ma J, To B, Obi C, Tomic M, Marks J. Generation, expression and purification of monoclonal-antibody-specific engineered domains to support development of oligoclonal recombinant antitoxins against BoNT/B and BoNT/E. Toxicon 2013. [DOI: 10.1016/j.toxicon.2012.07.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bagramyan K, Trinh D, Lou J, Sun Z, Marks J, Kalkum M. Quantification of botulinum neurotoxin in intoxicated neurons. Toxicon 2013. [DOI: 10.1016/j.toxicon.2012.07.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Tomic M, Garcia C, Lou J, Geren I, Meng Q, Conrad F, Wen W, Smith T, Brown J, Smith L, Wajid A, Dadson A, Horwitz A, Freeberg J, Marks J. Recombinant monoclonal-antibody-based antitoxins for treatment of types A, B, and E botulism. Toxicon 2013. [DOI: 10.1016/j.toxicon.2012.07.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Garcia C, Yan S, Geren I, Lou J, Wen W, Conrad F, Smith T, Brown J, Skerry J, Smith L, Marks J. Human monoclonal antibodies binding botulinum neurotoxin types C, D, and mosaic neurotoxins C-D and D-C. Toxicon 2013. [DOI: 10.1016/j.toxicon.2012.07.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Li S, Liu M, Lou J, Xing X, Wu J, Hu Y, Cai X, Xu F, Sun NX, Duh JG. Microwave frequency performance and high magnetic anisotropy of nanocrystalline Fe70Co30-B films prepared by composition gradient sputtering. J Nanosci Nanotechnol 2013; 13:1091-1094. [PMID: 23646578 DOI: 10.1166/jnn.2013.5973] [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: 06/02/2023]
Abstract
The fabrication and high-frequency ferromagnetic performances of nanocrystalline Fe70Co30-B soft magnetic films were investigated. It is revealed that the composition gradient sputtering method dramatically improves the high-frequency soft magnetic properties of the as-prepared films. This method gives rise to almost a linearly-increased distribution of compositions and residual stress. As a result, a very high ferromagnetic resonance frequency up to 6.7 GHz, high uniaxial magnetic anisotropic field up to 450 Oe, and low magnetic loss were obtained in as-deposited samples, which are particularly in favor of the integration between magnetic films and microwave components.
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Affiliation(s)
- Shandong Li
- Department of Physics, Fujian Normal University, Fuzhou 350007, China
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Li S, Liu M, Lou J, Xing X, Qiu J, Lin J, Cai Z, Xu F, Sun NX, Duh JG. Tunable microwave frequency performance of nanocomposite Co2MnSi/PZN-PT magnetoelectric coupling structure. J Nanosci Nanotechnol 2013; 13:1182-1185. [PMID: 23646598 DOI: 10.1166/jnn.2013.6050] [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: 06/02/2023]
Abstract
Nanocrystalline Co2MnSi Heusler alloy films were deposited on the PZN-PT substrates by a composition gradient sputtering method. It is revealed that this multiferroic heterostructure shows very strong magnetoelectric coupling, leading to continuously tunable microwave frequency characteristics by electric field. With the increase of electric field intensity from 0 to 6 kV/cm, the magnetic anisotropy field H(K) increases from 90 Oe to 182 Oe with an increment of 102%, corresponding to a ME coefficient of 15.3 Oe cm/kV; the ferromagnetic resonance frequency f(FMR) shifts from 3.38 to 4.82 GHz with an increment of deltaf(FMR) = 1440 MHz or deltaf(FMR)/f(FMR) = 43%; moreover, the damping constant alpha dramatically decreases from 0.035 to 0.018. These merits demonstrate that this nanocomposite multiferroic structure is promising in fabrication of tunable microwave components.
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Affiliation(s)
- Shandong Li
- College of Physics Science, Qingdao University, Qingdao 266071, China
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Zhong R, Liu L, Zou L, Sheng W, Zhu B, Xiang H, Chen W, Chen J, Rui R, Zheng X, Yin J, Duan S, Yang B, Sun J, Lou J, Liu L, Xie D, Xu Y, Nie S, Miao X. Genetic variations in the TGF signaling pathway, smoking and risk of colorectal cancer in a Chinese population. Carcinogenesis 2012; 34:936-42. [DOI: 10.1093/carcin/bgs395] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Soumyanath A, Dimitrova D, Arnold G, Belding H, Seifer N, Le N, Lou J. P02.186. CAST (Centella asiatica selected triterpenes): stability, safety, and effect on diabetic neuropathy (DN). Altern Ther Health Med 2012. [PMCID: PMC3373754 DOI: 10.1186/1472-6882-12-s1-p242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Fan Y, Lu YC, Lou J, Tang CC, Shinozaki DM. Structure orientation and micromechanical characterization of platelet-reinforced polyethylene nanocomposites. J Appl Polym Sci 2012. [DOI: 10.1002/app.38018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Liu C, Li G, Zheng X, Meng H, Qiu L, Lou J. Experimental study on culture modelling and phenotypes analysis of human bone marrow-derived mesenchymal stem cells in vitro. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Garcia-Rodriguez C, Geren IN, Lou J, Conrad F, Forsyth C, Wen W, Chakraborti S, Zao H, Manzanarez G, Smith TJ, Brown J, Tepp WH, Liu N, Wijesuriya S, Tomic MT, Johnson EA, Smith LA, Marks JD. Response re: 'Neutralizing human monoclonal antibodies binding multiple serotypes of botulinum neurotoxin' by Garcia-Rodriguez et al., PEDS, 2011;24:321-331. Protein Eng Des Sel 2011. [DOI: 10.1093/protein/gzr012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Fang Y, Zhou X, Lin M, Ying M, Luo P, Zhu D, Lou J, Yang B, He Q. Inhibition of all-trans-retinoic acid-induced proteasome activation potentiates the differentiating effect of retinoid in acute myeloid leukemia cells. Mol Carcinog 2011; 50:24-35. [PMID: 20945414 DOI: 10.1002/mc.20687] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
All-trans retinoic acid (ATRA) is nowadays considered to be the sole efficient agent for differentiation-based therapy in leukemia; however, the mechanisms of ATRA's biological effects remain largely unknown. Here we first reported that ATRA-induced myeloid leukemia differentiation was accompanied with the increased level of ubiquitin-protein conjugates and the upregulation of proteasome activity. To explore the functional role of the activated proteasome in retinoic acid (RA) signaling, the effects of proteasome inhibitors on RA-induced cell differentiation were determined. Our results demonstrated that inhibition of ATRA-elevated proteasome activity obviously promoted the myeloid maturation program triggered by ATRA, suggesting that the overactivated proteasome is not beneficial for ATRA's effects. Further studies demonstrated that the synergistic differentiating effects of ATRA and proteasome inhibitors might be associated with the protection of retinoic acid receptor alpha (RARα) from degradation by the ubiquitin-proteasome pathway (UPP). Moreover, the accumulated RARα was able to enhance the transcription of its target gene, which might also contribute to the enhanced differentiation of leukemia cells. Together, by linking the UPP to ATRA-dependent signaling, our data provide a novel insight into studying the mechanisms of ATRA-elicited cellular effects and imply the possibility of combination of ATRA and proteasome inhibitors in leukemia therapy.
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Affiliation(s)
- Yanfen Fang
- Institute of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
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Garcia-Rodriguez C, Geren IN, Lou J, Conrad F, Forsyth C, Wen W, Chakraborti S, Zao H, Manzanarez G, Smith TJ, Brown J, Tepp WH, Liu N, Wijesuriya S, Tomic MT, Johnson EA, Smith LA, Marks JD. Neutralizing human monoclonal antibodies binding multiple serotypes of botulinum neurotoxin. Protein Eng Des Sel 2010; 24:321-31. [PMID: 21149386 DOI: 10.1093/protein/gzq111] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [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] Open
Abstract
Botulism, a disease of humans characterized by prolonged paralysis, is caused by botulinum neurotoxins (BoNTs), the most poisonous substances known. There are seven serotypes of BoNT (A-G) which differ from each other by 34-64% at the amino acid level. Each serotype is uniquely recognized by polyclonal antibodies, which originally were used to classify serotypes. To determine if there existed monoclonal antibodies (mAbs) capable of binding two or more serotypes, we evaluated the ability of 35 yeast-displayed single-chain variable fragment antibodies generated from vaccinated humans or mice for their ability to bind multiple BoNT serotypes. Two such clonally related human mAbs (1B18 and 4E17) were identified that bound BoNT serotype A (BoNT/A) and B or BoNT/A, B, E and F, respectively, with high affinity. Using molecular evolution techniques, it proved possible to both increase affinity and maintain cross-serotype reactivity for the 4E17 mAb. Both 1B18 and 4E17 bound to a relatively conserved epitope at the tip of the BoNT translocation domain. Immunoglobulin G constructed from affinity matured variants of 1B18 and 4E17 were evaluated for their ability to neutralize BoNT/B and E, respectively, in vivo. Both antibodies potently neutralized BoNT in vivo demonstrating that this epitope is functionally important in the intoxication pathway. Such cross-serotype binding and neutralizing mAbs should simplify the development of antibody-based BoNT diagnostics and therapeutics.
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Affiliation(s)
- C Garcia-Rodriguez
- Department of Anesthesia and Pharmaceutical Chemistry, University of California-San Francisco, Rm 3C-38, San Francisco General Hospital, 1001 Potrero Ave., San Francisco, CA 94110, USA
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Zhu D, Lou J, Wu H, Luo P, Li L. Correlation of pharmacokinetic features and tissue distribution with toxicity of Q39, a hypoxic cell cytotoxic agent. Pharmazie 2010; 65:683-689. [PMID: 21038846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
3-(4-Bromophenyl)-2-(ethylsulfonyl)-6-methyl- quinoxaline 1,4-dioxide (Q39), is one of synthesized tirapazamine (TPZ) analogues that has been investigated preclinically as a hypoxic anticancer candidate. To date, there has not been a study to systematically evaluate the toxicity and pharmacokinetics of Q39. In the present study, we characterized the toxicity profile of Q39 in ICR mice. No toxicities were observed in mice treated with Q39 at dose levels that 168 mg/kg. LD50 value was 257.8 mg/kg (95% confidence interval = 231.1-287.5 mg/kg), which was 3.3-fold higher than that of TPZ. For the plasma pharmacokinetic assessment, a balb/c nude mice bearing K562 leukemia cell xenografted model was introduced and dosed with Q39 intravenous (i.v.)(1.0 mg/kg). Rapid resolution liquid chromatography coupled with tanderm mass spectrometry quantitative detection method (RRLC-MS/MS) was used to quantitatively determine plasma concentration. The RRLC-MS/MS method was validated within the concentration range 25-2000 ng/mL, and the calibration curves were linear with correlation coefficients of > 0.999. Following intravenous administration to nude mice (1.0 mg/kg), plasma concentrations declined rapidly from 1063.3 microg/mL at 10 min to 81.5 microg/mL at 3h. Elimination was triexponential, with T1/2 values of 1.4 h. The CL was 930.0 mL/h/kg, the V(d) was 1.88 L/kg, and the AUC(0-infinity) was 1080.5 ng/mL h. In the tissue distribution assay, concentration of Q39 was higher in the heart, liver, spleen and tumor tissues. The present study offers insights into the toxicological and pharmacologic profiles of Q39 which could help to optimize the dosage of Q39 for the future research and development.
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Affiliation(s)
- Difeng Zhu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medical College, Zhejiang University, Hangzhou, China
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Abstract
Prevotella ruminicola is an important ruminal bacteria. In maltose-grown cells, nearly 60% of cell dry weight consisted of high-molecular-weight (>2 x 10(sup6)) glycogen. The ratio of glycogen to protein (grams per gram) was relatively low (1.3) during exponential growth, but when cell growth slowed during the transition to the stationary phase, the ratio increased to 1.8. As much as 40% of the maltose was converted to glycogen during cell growth. Glycogen accumulation in glucose-grown cells was threefold lower than that in maltose-grown cells. In continuous cultures provided with maltose, much less glycogen was synthesized at high (>0.2 per h) than at low dilution rates, where maltose was limiting (28 versus 60% of dry weight, respectively). These results indicated that glycogen synthesis was stimulated at low growth rates and was also influenced by the growth substrate. In permeabilized cells, glycogen was synthesized from [(sup14)C]glucose-1-phosphate but not radiolabelled glucose, indicating that glucose-1-phosphate is the initial precursor of glycogen formation. Glycogen accumulation may provide a survival mechanism for P. ruminicola during periods of carbon starvation and may have a role in controlling starch fermentation in the rumen.
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