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Huang W, Zeng W, Huang Z, Fang D, Liu H, Feng M, Mao L, Ye D. Ratiometric Afterglow Luminescent Imaging of Matrix Metalloproteinase-2 Activity via an Energy Diversion Process. Angew Chem Int Ed Engl 2024:e202404244. [PMID: 38639067 DOI: 10.1002/anie.202404244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/08/2024] [Accepted: 04/18/2024] [Indexed: 04/20/2024]
Abstract
Ratiometric afterglow luminescent (AGL) probes are attractive for in vivo imaging due to their high sensitivity and signal self-calibration function. However, there are currently few ratiometric AGL probes available for imaging enzymatic activity in living organisms. Here, we present an energy diversion (ED) strategy that enables the design of an enzyme-activated ratiometric AGL probe (RAG-RGD) for in vivo afterglow imaging. The ED process provides RAG-RGD with a radiative transition for an 'always on' 520-nm AGL signal (AGL520) and a cascade three-step energy transfer (ET) process for an 'off-on' 710-nm AGL signal (AGL710) in response to a specific enzyme. Using matrix metalloproteinase-2 (MMP-2) as an example, RAG-RGD shows a significant ~11-fold increase in AGL710/AGL520 toward MMP-2. This can sensitively detect U87MG brain tumors through ratiometric afterglow imaging of MMP-2 activity, with a high signal-to-background ratio and deep imaging depth. Furthermore, by utilizing the self-calibration effect of ratiometric imaging, RAG-RGD demonstrated a strong negative correlation between the AGL710/AGL520 value and the size of orthotopic U87MG tumor, enabling accurate monitoring of orthotopic glioma growth in vivo. This ED process may be applied for the design of other enzyme-activated ratiometric afterglow probes for sensitive afterglow imaging.
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Affiliation(s)
| | | | | | - Daqing Fang
- Shanghai Institute of Materia Medica CAS, Medicinal Chemistry, CHINA
| | - Hong Liu
- Shanghai Institute of Materia Medica CAS, Medicinal Chemistry, CHINA
| | - Min Feng
- Nanjing Drum Tower Hospital, General Surgery, CHINA
| | - Liang Mao
- Nanjing University, Environment, CHINA
| | - Deju Ye
- Nanjing University, Chemistry, 163 Xianlin Road,, 210023, Nanjing, CHINA
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Chen W, Bai Y, Fang P, Chen J, Wang X, Li Y, Luo X, Xiao Z, Iyer R, Shan F, Yuan T, Wu M, Huang X, Fang D, Yang Q, Zhang Y. Body mass index's effect on CRSwNP extends to pathological endotype and recurrence. Rhinology 2024; 0:3161. [PMID: 38416065 DOI: 10.4193/rhin23.402] [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: 02/29/2024]
Abstract
BACKGROUND Elevated body mass index (BMI) has been recognized as an important contributor to corticosteroid insensitivity in chronic rhinosinusitis with nasal polyps (CRSwNP). We aimed to delineate the effects of elevated BMI on immunological endotype and recurrence in CRSwNP individuals. METHODOLOGY A total of 325 patients with CRSwNP undergoing FESS were recruited and stratified by BMI. H&E staining was employed for histological evaluation. Characteristics of inflammatory patterns were identified by immunohistochemical staining. The predictive factors for recurrence were determined and evaluated by multivariable logistic regression analysis and the receiver operating characteristic (ROC) curves across all subjects and by weight group. RESULTS In all patients with CRSwNP, 26.15% subjects were classified as overweight/obese group across BMI categories and exhibited a higher symptom burden. The upregulated eosinophil/neutrophil-dominant cellular endotype and amplified type 2/ type 3 coexisting inflammation was present in overweight/obese compared to underweight/normal weight controls. Additionally, a higher recurrent proportion was shown in overweight/obese patients than that in underweight/normal weight cohorts. Multivariable logistic regression analysis identified BMI as an independent predictor for recurrence. The predictive capacity of each conventional parameter (tissue eosinophil and CLCs count, and blood eosinophil percentage) alone or in combination was poor in overweight/obese subjects. CONCLUSIONS Overweight/obese CRSwNP stands for a unique phenotype and endotype. Conventional parameters predicting recurrence are compromised in overweight/obese CRSwNP, and there is an urgent need for novel biomarkers that predict recurrence for these patients.
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Affiliation(s)
- W Chen
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Bai
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - P Fang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - J Chen
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - X Wang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Li
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - X Luo
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Z Xiao
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - R Iyer
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - F Shan
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - T Yuan
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - M Wu
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - X Huang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - D Fang
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Q Yang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Zhang
- Department of Otolaryngology-Head and Neck Surgery, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Department of Allergy, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diabetology, Guangzhou Key Laboratory of Mechanistic and Translational Obesity Research, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Fang D, Pan D, Wen X, Zhang J, Yang M, Ye D, Liu H. A Near-infrared Fluorescence and Positron Emission Tomography Bimodal Probe for In Vivo Imaging of Amyloid-β Species. ACS Chem Neurosci 2024; 15:472-478. [PMID: 38214485 DOI: 10.1021/acschemneuro.3c00377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024] Open
Abstract
Noninvasive imaging of amyloid-β (Aβ) species in vivo is important for the early diagnosis of Alzheimer's disease (AD). In this paper, we report a near-infrared (NIR) fluorescence (FL) and positron emission tomography (PET) bimodal probe (NIR-[68Ga]) for in vivo imaging of both soluble and insoluble Aβ species. NIR-[68Ga] holds a high binding affinity, high selectivity and high sensitivity toward Aβ42 monomers, oligomers, and aggregates in vitro. In vivo imaging results show that NIR-[68Ga] can cross the blood-brain-barrier (BBB), and produce significantly higher PET and NIR FL bimodal signals in the brains of APP/PS1 transgenic AD mice relative to that of age-matched wild-type mice, which are also validated by the ex vivo autoradiography and histological staining images. Our results demonstrate that NIR-[68Ga] is an efficient NIR FL and PET bimodal probe for the sensitive imaging of soluble and insoluble Aβ species in AD mice.
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Affiliation(s)
- Daqing Fang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- State Key Laboratory of Analytical Chemistry for Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Donghui Pan
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, China
| | - Xidan Wen
- State Key Laboratory of Analytical Chemistry for Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Junya Zhang
- State Key Laboratory of Analytical Chemistry for Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Min Yang
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi 214063, China
| | - Deju Ye
- State Key Laboratory of Analytical Chemistry for Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hong Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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Zhang F, Zhang J, Fang D, Zhang Y, Wang D. Unusual magnetic interaction in CrTe: insights from machine-learning and empirical models. J Phys Condens Matter 2023; 36:135804. [PMID: 38091625 DOI: 10.1088/1361-648x/ad154f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/13/2023] [Indexed: 12/28/2023]
Abstract
Chromium telluride (CrTe) has received much attention due to its small magnetic anisotropy, which hosts the potential for complex magnetic structures. However, its magnetic properties have been relatively unexplored with numerical simulations, as the magnetic interactions inside are quite unusual. In this study, we employ both a machine-learning model and an empirical model to investigate the magnetic phase transitions of bulk and monolayer CrTe, revealing the existence of unusual magnetic interaction, which can be captured by the machine-learning model but not the simple empirical model. Furthermore, our results also demonstrate that magnetic moments further apart exhibit stronger interactions than those in closer proximity, deviating from typical behavior.
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Affiliation(s)
- F Zhang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - J Zhang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - D Fang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Y Zhang
- School of Physics, Henan Normal University, Xinxiang 453007, People's Republic of China
| | - D Wang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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Nie XQ, Huang CF, Yin Z, Yang Y, Zhou X, Fang D, Cao R, Liu QF, Lin R, Deng YJ, Yu GP. [Two cases of EB virus-positive diffuse large B-cell lymphoma with HAVCR2 mutation]. Zhonghua Nei Ke Za Zhi 2023; 62:863-866. [PMID: 37394859 DOI: 10.3760/cma.j.cn112138-20221018-00764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Affiliation(s)
- X Q Nie
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - C F Huang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Z Yin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Y Yang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X Zhou
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - D Fang
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - R Cao
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Q F Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - R Lin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Y J Deng
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G P Yu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Zhao XY, Gu TW, Fang D, Sun HX, Bi Y. [Association between serum sex hormone-binding globulin and non-alcoholic steatohepatitis]. Zhonghua Nei Ke Za Zhi 2022; 61:1239-1246. [PMID: 36323566 DOI: 10.3760/cma.j.cn112138-20220218-00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To investigate the association between serum sex hormone-binding globulin (SHBG) and non-alcoholic steatohepatitis (NASH). Methods: In this cross-sectional study, a total of 371 middle-aged and young obese patients who were hospitalized and underwent liver puncture in Nanjing Drum Tower Hospital from January 2016 to April 2021 were included. The population was divided into control group (n=43) and non-alcoholic fatty liver disease (NAFLD) group (n=328) based on the non-alcoholic fatty liver disease activity score. Subjects in NAFLD group were further divided into non-alcoholic fatty liver (NAFL) (n=60), uncertain-NASH (n=172), and NASH (n=96). Serum SHBG was tested in patients with NAFLD who were divided into three subgroups according to tertiles. The liver pathological characteristics in different SHBG level subgroups were compared. The risk factors of NASH were analyzed by logistic regression. The prediction model of NASH noninvasive diagnosis was established by forward stepwise regression, and the diagnostic value of non-invasive model for NASH was evaluated by receiver operating characteristic (ROC) curve. Results: The median age in patients were (32±10) years old with a body mass index of (39.16±6.58) kg/m², including 236 females (63.6%). Serum SHBG level [M (Q1, Q3)] in NAFLD group was significantly lower than that in control group [16.90 (11.43, 23.00) vs. (23.45 (15.40, 31.22) mmol/L, P<0.05], and progressively diminished in NAFL, uncertain-NASH and NASH subgroups [(22.24±10.47), (20.57±19.58), (15.80±8.74) mmol; P for trend<0.05]. Compared with the high-leveled SHBG subgroup, the steatosis score (2.09±0.80 vs. 1.51±0.72, P<0.01) and lobular inflammation score (1.10±0.68 vs. 0.85±0.68, P<0.05) were significantly higher in the low-leveled SHBG group. Multivariate logistic regression analysis indicated that lower serum SHBG level was an independent risk factor for NASH (OR=2.527, 95%CI: 1.296 to 4.928, P<0.05). The area under ROC curve of SHBG combined with aspartate aminotransferase in predicting NASH in NAFLD patients was 0.752 (95%CI: 0.696 to 0.809). Conclusion: Low serum SHBG level is associated with NASH.
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Affiliation(s)
- X Y Zhao
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - T W Gu
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - D Fang
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - H X Sun
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Y Bi
- Department of Endocrinology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
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7
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Zhang F, Zhang J, Nan H, Fang D, Zhang GX, Zhang Y, Liu L, Wang D. Magnetic phase transition of monolayer chromium trihalides investigated with machine learning: toward a universal magnetic Hamiltonian. J Phys Condens Matter 2022; 34:395901. [PMID: 35817029 DOI: 10.1088/1361-648x/ac8037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
The prediction of magnetic phase transitions often requires model Hamiltonians to describe the necessary magnetic interactions. The advance of machine learning provides an opportunity to build a unified approach that can treat various magnetic systems without proposing new model Hamiltonians. Here, we develop such an approach by proposing a novel set of descriptors that describes the magnetic interactions and training the artificial neural network (ANN) that plays the role of a universal magnetic Hamiltonian. We then employ this approach and Monte Carlo simulation to investigate the magnetic phase transition of two-dimensional monolayer chromium trihalides using the trained ANNs as energy calculator. We show that the machine-learning-based approach shows advantages over traditional methods in the investigation of ferromagnetic and antiferromagnetic phase transitions, demonstrating its potential for other magnetic systems.
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Affiliation(s)
- F Zhang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - J Zhang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - H Nan
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - D Fang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - G-X Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China
| | - Y Zhang
- School of Physics, Henan Normal University, Xinxiang 453007, People's Republic of China
| | - L Liu
- Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources in Guangxi, Guilin University of Technology, Guilin, 541004, People's Republic of China
| | - D Wang
- School of Microelectronics & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- Key Lab of Micro-Nano Electronics and System Integration of Xi'an City, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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Bi G, Zhang N, Jiang J, Li Y, Chen T, Fu W, Zhang X, Fang D, Ding X. Microstructure and yield phenomenon of an extruded Mg-Y-Cu alloy with LPSO phase. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.01.011] [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: 11/30/2022]
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Fang D, Wen X, Wang Y, Sun Y, An R, Zhou Y, Ye D, Liu H. Engineering of donor-acceptor-donor curcumin analogues as near-infrared fluorescent probes for in vivo imaging of amyloid-β species. Am J Cancer Res 2022; 12:3178-3195. [PMID: 35547754 PMCID: PMC9065200 DOI: 10.7150/thno.68679] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 02/28/2022] [Indexed: 11/05/2022] Open
Abstract
Near-infrared (NIR) fluorescent imaging of both soluble and insoluble Aβ species in the brain of Alzheimer's disease (AD) is crucial for the early diagnosis and intervention of AD. To date, a variety of NIR fluorescent probes have been reported for the detection of Aβ species. Among these probes, CRANAD-58 was reported to have the capability to detect both soluble and insoluble Aβ species, which is vital to monitor the changes of Aβ species during the pathological course of the disease. Though CRANAD-58 has shown promise to noninvasively detect Aβ species in transgenic AD mice, the emission wavelength (~670 nm) is still too short for further applications. Therefore, new probes with longer emission wavelength and improved physiological properties are in highly demand. Herein, we report the design and engineering of nine donor-acceptor-donor molecules as "off-on" near-infrared fluorescent probes for in vivo imaging of both soluble and insoluble Aβ species in living AD mice owing to its improved in vitro properties and in vivo performance. Methods: We report a two-round strategy to develop nine "off-on" NIR fluorescence probes via structural modification of a curcumin analogue-based donor-acceptor-donor architecture. In round one, probes 1 and 2 were synthesized, and probe 2 was identified to be an optimum probe as it showed distinct "off-on" NIR fluorescence at > 690 nm upon binding to Aβ monomers, oligomers and aggregates. To further improve the in vivo performance, further structural modification of probe 2 into probes 3-9 was then conducted. The fluorescence response with Aβ species and histological staining in vitro and in vivo imaging of Aβ species in APP/PS1 transgenic AD mice and age-matched wild-type mice were performed. Results: We demonstrate that, compared to probe 2, probe 9 with improved physiological properties hold the fastest kinetics (~10 min) to produce not only higher brain fluorescence intensity in 10-month-old APP/PS1 transgenic AD mice, but also afford a higher discrepancy in brain fluorescence to discriminate AD mice from wild-type (WT) mice. Probe 9 also hold the ability to detect soluble Aβ species in 6-month-old APP/PS1 transgenic mice. Probe 9 was further applied for dynamic visualization of Aβ plaques in a skull-thinning 14-month-old APP/PS1 mouse, which revealed its immediate penetration into brain parenchyma and selective labeling of both parenchymal and angiopathic Aβ plaques. In addition, probe 9 possessed significantly high attenuation effect on the aggregation of Aβ monomers. Conclusion: Our results demonstrate the good potential of probe 9 for longitudinal NIR fluorescence imaging of soluble and insoluble Aβ species in APP/PS1 transgenic AD mice, which may act as a useful tool for early diagnosis and intervention of AD.
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Li J, Li H, Fang D, Liu L, Han X, Sun J, Li C, Zhou Y, Ye D, Liu H. Sulfoximines Assisted Rh(III)-Catalyzed C-H Activation/Annulation Cascade to Synthesize Highly Fused Indeno-1,2-benzothiazines. J Org Chem 2021; 86:15217-15227. [PMID: 34613739 DOI: 10.1021/acs.joc.1c01820] [Citation(s) in RCA: 7] [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] [Indexed: 12/28/2022]
Abstract
A facile access to highly fused tetracyclic indeno-1,2-benzothiazines has been established via a Rh(III)-catalyzed C-H bond activation and intramolecular annulation cascade between sulfoximides and all-carbon diazo indandiones. This strategy is characterized by the fact that the diazo coupling partners do not require preactivation, along with its high efficiency, broad substrate generality, and facile transformation. Particularly, the highly conjugated tetracyclic products demonstrate good optical properties and can easily enter cells to emit bright fluorescence for live cell imaging.
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Affiliation(s)
- Jian Li
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing 210023, China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Hui Li
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing 210023, China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Daqing Fang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Lingjun Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Xu Han
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Jina Sun
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Chunpu Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Yu Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Deju Ye
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hong Liu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Nanjing 210023, China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
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11
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Wang J, Liang H, Fang D, Huang Y, Miao Y, Yu Y, Gao Q. [Inhibition of mitochondrial reactive oxygen species reduces high glucose-induced pyroptosis and ferroptosis in H9C2 cardiac myocytes]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:980-987. [PMID: 34308846 DOI: 10.12122/j.issn.1673-4254.2021.07.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To observe the effect of inhibiting mitochondrial oxidative stress and NLRP3 inflammasomes on high glucose (HG)-induced pyroptosis and ferroptosis in H9C2 cardiac muscle cells and explore the possible interactions between mitochondrial reactive oxygen species (ROS) and inflammasomes. METHODS H9C2 cells exposed to high glucose (35 mmol/L) were treated with the mitochondrial antioxidant mitoquinone (MitoQ), the NLRP3 antagonist MCC950, or both MCC950 and rotenone (a mitochondrial electron transport antagonist), and the cell viability was measured with CCK-8 assay. The cellular and mitochondrial ROS levels were measured using CellRox and Mitosox fluorescent probes, respectively. The cellular NLRP3 inflammasome level was detected with immunofluorescence assay, and the expressions of the key proteins related with pyroptosis and ferroptosis were determined with Western blotting. RESULTS HG exposure significantly lowered the viability of H9C2 cells (P < 0.01), reduced the expression of GPX4 protein (a key protein related with ferroptosis) (P < 0.01), and increased the fluorescence intensities of NLRP3 (P < 0.01) and ROS (at both the cellular and mitochondrial levels, P < 0.01) and the protein expressions of NLRP3 and GSDMD-NT (P < 0.01). Treatment with either MitoQ or MCC950 significantly increased the viability of HG-exposed cells (P < 0.01), increased GPX4 expression (P < 0.01), and reduced the fluorescence intensities of NLRP3 (P < 0.01) and cellular and mitochondrial ROS (P < 0.01) and the protein expressions of NLRP3 and GSDMD-NT (P < 0.05). Compared with MCC950 treatment, treatment with both MCC950 and rotenone significantly reduced the viability of HG-exposed cells (P < 0.01), lowered GPX4 expression (P < 0.01), and increased the fluorescence intensities of ROS and NLRP3 (P < 0.01) and the protein levels of NLRP3 and GSDMD-NT (P < 0.05). CONCLUSION MitoQ inhibits mitochondrial ROS production to reduce HGinduced NLRP3 inflammasome activation and thus suppress pyroptosis and ferroptosis of cardiac muscle cells. There may be an interaction between mitochondrial ROS and NLRP3 inflammasomes.
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Affiliation(s)
- J Wang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - H Liang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - D Fang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Y Huang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Y Miao
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Y Yu
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Q Gao
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China.,Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical College, Bengbu 233000, China
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He Z, Xian H, Tang M, Chen Y, Lian Z, Fang D, Peng X, Hu D. DNA polymerase β may be involved in protecting human bronchial epithelial cells from the toxic effects induced by methyl tert-butyl ether exposure. Hum Exp Toxicol 2021; 40:2135-2144. [PMID: 34121485 DOI: 10.1177/09603271211022788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Methyl tert-butyl ether (MTBE), a widely used gasoline additive and a ubiquitous environmental pollutant in many countries and regions, can cause various kinds of toxic effects on human health. However, the molecular mechanism underlying its toxic effects remains elusive. The present study aimed to explore the cytotoxicity, DNA damage and oxidative damage effects of MTBE on human bronchial epithelial cells (16HBE) and the possible role of DNA polymerase β (pol-β) in this process. RNA interference (RNAi) was used to obtain pol-β gene knocked-down cells (pol-β-). CCK-8 assay was adopted to analyze the cell viability. Alkaline single-cell gel electrophoresis (SCGE) was performed to detect the DNA damage effects of MTBE. The enzyme activity of GSH-Px, SOD, CAT and the level of MDA were assessed. The data indicated that when treated with MTBE at the concentration exceeding 50 μmol/L and for the time exceeding 24 h, the pol-β- exhibited significantly decreased cell viability and increased DNA damage effects, as compared to the control (P < 0.05). Furthermore, there was significant difference in the levels of GSH-pX, SOD, CAT and MDA between the pol-β- and the control (P < 0.05). Our investigation suggests that MTBE can cause obvious cytotoxicity, DNA damage and oxidative damage effects on 16HBE cells. DNA polymerase β may be involved in protecting 16HBE cells from the toxic effects induced by MTBE exposure. These findings provide a novel insight into the molecular mechanism underlying the toxic effects of MTBE on human cells.
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Affiliation(s)
- Z He
- Shiyan Institute of Preventive Medicine and Health Care, Baoan District, Shenzhen City, People's Republic of China.,Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - H Xian
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - M Tang
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - Y Chen
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - Z Lian
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
| | - D Fang
- Department of Environmental Health, Center for Disease Control and Prevention of Shenzhen City, Shenzhen, People's Republic of China
| | - X Peng
- State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, People's Republic of China
| | - D Hu
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People's Republic of China
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13
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Sun H, Tang Q, Fang D, Kong Y, Rong T, Yang D, Zhai Y, Wu Y. MA01.10 MDM2 Inhibitor APG-115 Suppresses Cell Proliferation and Tumor Growth in Preclinical Models Of NSCLC Harboring STK11 Mutations. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.205] [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: 10/21/2022]
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Bao G, Lu H, Liang Y, Xu Z, Shi Y, Li J, Kong W, Liu J, Fang D, Gong Y, He S, He Q, Li X, Ci W, Zhou L. The copy number variation signatures in upper tract urothelial carcinoma define distinct subtypes with prognostic relevance. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34089-1] [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: 11/16/2022] Open
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Yao K, Wei Z, Xie Y, Wang D, Liu H, Fang D, Ma M, Liu J. Lactation performance and nitrogen utilization of dairy cows on diets including unfermented or fermented yellow wine lees mix. Livest Sci 2020. [DOI: 10.1016/j.livsci.2020.104025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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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Han X, Gao F, Li C, Fang D, Xie X, Zhou Y, Liu H. Synthesis of Highly Fused Pyrano[2,3-b]pyridines via Rh(III)-Catalyzed C–H Activation and Intramolecular Cascade Annulation under Room Temperature. J Org Chem 2020; 85:6281-6294. [DOI: 10.1021/acs.joc.9b03102] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xu Han
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Feng Gao
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Chunpu Li
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Daqing Fang
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang 110016, China
| | - Xiong Xie
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Yu Zhou
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Hong Liu
- State Key Laboratory of Drug Research and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
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Heslop KA, Rovini A, Hunt EG, Fang D, Morris ME, Christie CF, Gooz MB, DeHart DN, Dang Y, Lemasters JJ, Maldonado EN. JNK activation and translocation to mitochondria mediates mitochondrial dysfunction and cell death induced by VDAC opening and sorafenib in hepatocarcinoma cells. Biochem Pharmacol 2020; 171:113728. [PMID: 31759978 PMCID: PMC7309270 DOI: 10.1016/j.bcp.2019.113728] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/20/2019] [Indexed: 02/07/2023]
Abstract
The multikinase inhibitor sorafenib, and opening of voltage dependent anion channels (VDAC) by the erastin-like compound X1 promotes oxidative stress and mitochondrial dysfunction in hepatocarcinoma cells. Here, we hypothesized that X1 and sorafenib induce mitochondrial dysfunction by increasing reactive oxygen species (ROS) formation and activating c-Jun N-terminal kinases (JNKs), leading to translocation of activated JNK to mitochondria. Both X1 and sorafenib increased production of ROS and activated JNK. X1 and sorafenib caused a drop in mitochondrial membrane potential (ΔΨ), a readout of mitochondrial metabolism, after 60 min. Mitochondrial depolarization after X1 and sorafenib occurred in parallel with JNK activation, increased superoxide (O2•-) production, decreased basal and oligomycin sensitive respiration, and decreased maximal respiratory capacity. Increased production of O2•- after X1 or sorafenib was abrogated by JNK inhibition and antioxidants. S3QEL 2, a specific inhibitor of site IIIQo, at Complex III, prevented depolarization induced by X1. JNK inhibition by JNK inhibitors VIII and SP600125 also prevented mitochondrial depolarization. After X1, activated JNK translocated to mitochondria as assessed by proximity ligation assays. Tat-Sab KIM1, a peptide selectively preventing the binding of JNK to the outer mitochondrial membrane protein Sab, blocked the depolarization induced by X1 and sorafenib. X1 promoted cell death mostly by necroptosis that was partially prevented by JNK inhibition. These results indicate that JNK activation and translocation to mitochondria is a common mechanism of mitochondrial dysfunction induced by both VDAC opening and sorafenib.
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Affiliation(s)
- K A Heslop
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - A Rovini
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - E G Hunt
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - D Fang
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - M E Morris
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - C F Christie
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - M B Gooz
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - D N DeHart
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - Y Dang
- Department of Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - J J Lemasters
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States; Department of Biochemistry & Molecular Biology, Medical University of South Carolina, Charleston, SC, United States; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States
| | - E N Maldonado
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States.
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Xin ZC, Yang BC, Li M, Yuan YM, Cui WS, Tang Y, Fang D, Song WD. [Appllication of human acellular dermal matrix in surgical treatment of genitourinary disease]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:778-782. [PMID: 31420640 DOI: 10.19723/j.issn.1671-167x.2019.04.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Humanacellular dermal matrix (HADM) is widely used in the field of burn wound repair and tissue engineering plastic surgery. HADM is manufactored by physical and chemical decellular process to remove the antigenic components that might cause immune rejection in dermis.The extracellular matrix of three-dimensional cell scaffold structure with collagen fibers had been used for wound repair and tissue regeneration, while HADM characterized with low absorption rate after implantation and strong ability to induce angiogenesis in host tissue. Studies reported that after the HADM was implanted into the patient, the host cells, such as fibroblasts and myofibroblasts, as well as lymphocytes, macrophages, granulocytes and mast cells, rapidly infiltrated the graft. The connective tissue and neovascularization were then formed within the HADM three-dimensional cell scaffold, the lymphatic system also appears after vascular reconstruction. Traditional urethral reconstruction using autologous skin flaps has some defects, such as complexity of the technology, risk of necrosis of the skin flaps after transplantation, and failure to achieve functional repair of the urethral epithelium. It has been reported that using HADM to reconstruct the urethra in patients with urethral stricture, hypospadias and bladder-vaginal fistula, showed promising results. Others have reported the experience of using HADM to repair and reconstruct congenital classic bladder exstrophy. HADM has also been used for tissue repair in patients with penile skin defect caused by Fonier's gangrene and hidradenitis suppurativa, and implanted under Bucks' fascia to enlarge the penis. The report of HADM implantation for treating premature ejaculation also deserves attention. Researchers found that HADM implantation can form a tissue barrier between the skin and corpus cavernosum, which can effectively reduce penile sensitivity and treat premature ejaculation. The safety and effectiveness of HADM implantation in the treatment of premature ejaculation need to be further standardized by data from multi-center, large-sample clinical studies. In summary, HADM is the extracellular matrix and three-dimensional cell scaffold of human dermis. As a new type of tissue repair material, new blood vessels are formed actively after implantation, which shows good histocompatibility. HADM has shown increasingly broad application prospects in treatment of genitourinary diseases including penis, urethra and bladder diseases. HADM has also been used in the treatment of premature ejaculation in recent clinical studies, and its long-term safety and efficacy need to be further investigated.
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Affiliation(s)
- Z C Xin
- Andrology Center, Peking University First Hospital, Beijing 100034, China
| | - B C Yang
- Andrology Center, Peking University First Hospital, Beijing 100034, China
| | - M Li
- Andrology Center, Peking University First Hospital, Beijing 100034, China
| | - Y M Yuan
- Andrology Center, Peking University First Hospital, Beijing 100034, China
| | - W S Cui
- Andrology Center, Peking University First Hospital, Beijing 100034, China
| | - Y Tang
- Andrology Center, Peking University First Hospital, Beijing 100034, China
| | - D Fang
- Andrology Center, Peking University First Hospital, Beijing 100034, China
| | - W D Song
- Andrology Center, Peking University First Hospital, Beijing 100034, China
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Yan R, Hu Y, Liu F, Wei S, Fang D, Shuhendler AJ, Liu H, Chen HY, Ye D. Activatable NIR Fluorescence/MRI Bimodal Probes for in Vivo Imaging by Enzyme-Mediated Fluorogenic Reaction and Self-Assembly. J Am Chem Soc 2019; 141:10331-10341. [PMID: 31244188 DOI: 10.1021/jacs.9b03649] [Citation(s) in RCA: 203] [Impact Index Per Article: 40.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Stimuli-responsive in situ self-assembly of small molecules to form nanostructures in living subjects has produced promising tools for molecular imaging and tissue engineering. However, controlling the self-assembly process to simultaneously activate multimodality imaging signals in a small-molecule probe is challenging. In this paper, we rationally integrate a fluorogenic reaction into enzyme-responsive in situ self-assembly to design small-molecule-based activatable near-infrared (NIR) fluorescence and magnetic resonance (MR) bimodal probes for molecular imaging. Using alkaline phosphatase (ALP) as a model target, we demonstrate that probe (P-CyFF-Gd) can be activated by endogenous ALP overexpressed on cell membranes, producing membrane-localized assembled nanoparticles (NPs) that can be directly visualized by cryo-SEM. Simultaneous enhancements in NIR fluorescence (>70-fold at 710 nm) and r1 relaxivity (∼2.3-fold) enable real-time, high-sensitivity, high-spatial-resolution imaging and localization of the ALP activity in live tumor cells and mice. P-CyFF-Gd can also delineate orthotopic liver tumor foci, facilitating efficient real-time, image-guided surgical resection of tumor tissues in intraoperative mice. This strategy combines activatable NIR fluorescence via a fluorogenic reaction and activatable MRI via in situ self-assembly to promote ALP activity imaging, which could be applicable to design other activatable bimodal probes for in vivo imaging of enzyme activity and locations in real time.
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Affiliation(s)
- Runqi Yan
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Yuxuan Hu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Fei Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Shixuan Wei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Daqing Fang
- State Key Laboratory of Drug Research and Key Laboratory of Receptor Research , Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road , Shanghai 201203 , China
| | - Adam J Shuhendler
- Department of Chemistry & Biomolecular Sciences , University of Ottawa , Ottawa , ON K1N 6N5 , Canada
| | - Hong Liu
- State Key Laboratory of Drug Research and Key Laboratory of Receptor Research , Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road , Shanghai 201203 , China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Deju Ye
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China.,Research Center for Environmental Nanotechnology (ReCent) , Nanjing University , Nanjing , 210023 , China
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Chen L, Wei Y, Chi W, Fang D, Jiang X, Zhang S. Potential Mutations in Chinese Pathologic Myopic Patients and Contributions to Phenotype. Curr Mol Med 2019; 18:689-697. [PMID: 30747064 PMCID: PMC6635424 DOI: 10.2174/1566524019666190211120016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 01/07/2019] [Accepted: 01/07/2019] [Indexed: 12/02/2022]
Abstract
Purpose Pathologic myopia is a leading cause of visual impairment in East Asia. The aim of this study was to investigate the potential mutations in Chinese pathologic myopic patients and to analyze the correlations between genotype and clinical phenotype. Method One hundred and three patients with pathologic myopia and one hundred and nine unrelated healthy controls were recruited from Zhongshan Ophthalmic Center. Detailed clinical data, including ultra-widefield retinal images, measurements of best-corrected visual acuity, axial length, refractive error and ophthalmic examination results, were obtained. Blood samples were collected for high-throughput DNA targeted sequencing. Based on the screening results, phenotype-genotype correlations were analyzed. Results The study included 196 eyes of 103 patients (36 men and 67 women) with an average age of 52.19 (38.92 – 65.46) years, an average refractive error of -11.80 D (-16.38 – -7.22) and a mean axial length of 28.26 mm (25.79 – 30.73). The patients were subdivided into three groups: myopic chorioretinal atrophy (190 eyes of 101 patients), myopic choroidal neovascularization (17 eyes of 15 patients), and myopic traction retinopathy (71 eyes of 61 patients). Systematic analysis of variants in the 255 genes revealed six potential pathogenic mutations: PEX7, OCA2, LRP5 (rs545382, c.1647T>C), TSPAN12 (rs41623, c.765G>T), RDH5 (rs3138142, c.423C>T) and TTC21B (rs80225158, c.2385G>C). OCA2 mutations were primarily observed in patients with myopic traction maculopathy. Conclusion Genetic alterations contribute to various clinical characteristics in Chinese pathologic myopic patients. The study may provide new insights into the etiology of pathologic myopia and potential targets for therapeutic interventions.
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Affiliation(s)
- L Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.,Shenzhen Eye Hospital, Shenzhen Eye Institute, Jinan University, Shenzhen, China
| | - Y Wei
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - W Chi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - D Fang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - X Jiang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - S Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
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Ni W, Chen J, Xiao Z, Yu S, Zhang W, Zhou Z, Chen D, Qinfu F, Chen X, Lin Y, Zhu K, He J, Gao S, Xue Q, Mao Y, Cheng G, Sun K, Liu X, Fang D. The Value of Postoperative Radiation Therapy for 1 to 2 Pathological Lymph Nodes Metastases of Esophageal Squamous Cell Carcinoma Using Propensity Score-Matched: Analysis from a Two-Center Study. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.534] [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: 10/28/2022]
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Ni W, Chen J, Xiao Z, Yu S, Zhang W, Zhou Z, Chen D, Qinfu F, Chen X, Lin Y, Zhu K, He J, Gao S, Xue Q, Mao Y, Cheng G, Sun K, Liu X, Fang D. Effect of Adjuvant Radiation Therapy on Survival in Resected Thoracic Esophageal Squamous Cell Carcinoma According to the 8th AJCC Stage System: Pooled Analysis of Two Cancer Centers in China. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.536] [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: 11/16/2022]
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Deng W, Chen J, Xiao Z, Ni W, Li C, Chang X, Yang J, Yu S, Zhang W, Zhou Z, Chen D, Qinfu F, Chen X, Lin Y, Zhu K, He J, Gao S, Xue Q, Mao Y, Cheng G, Sun K, Liu X, Fang D. Nomogram to Predict Disease-Free Survival in Stage IB-III Thoracic Esophageal Squamous Cell Carcinoma Patients after Radical Esophagectomy. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.512] [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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Su X, Fang D, Liu Y, Ruan G, Seuntjens J, Kinsella JM, Tran SD. Lyophilized bone marrow cell extract functionally restores irradiation-injured salivary glands. Oral Dis 2018; 24:202-206. [PMID: 29480601 DOI: 10.1111/odi.12728] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 08/02/2017] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Bone marrow cell extract (BMCE) was previously reported to restore salivary gland hypofunction caused by irradiation injury. Proteins were shown to be the main active factors in BMCE. However, BMCE therapy requires multiple injections and protein denaturation is a concern during BMCE storage. This study aimed to preserve, by lyophilization (freeze-drying), the bioactive factors in BMCE. METHODS We developed a method to freeze-dry BMCE and then to analyze its ingredients and functions in vivo. Freeze-dried (FD) BMCE, freshly prepared BMCE (positive control), or saline (vehicle control) was injected into the tail vein of mice that had received irradiation to damage their salivary glands. RESULTS Results demonstrated that the presence of angiogenesis-related factors and cytokines in FD-BMCE remained comparable to those found in fresh BMCE. Both fresh and FD-BMCE restored comparably saliva secretion, increased cell proliferation, upregulated regenerative/repair genes, protected salivary acinar cells, parasympathetic nerves, and blood vessels from irradiation-damaged salivary glands. CONCLUSION Lyophilization of BMCE maintained its bioactivity and therapeutic effect on irradiation-injured salivary glands. The advantages of freeze-drying BMCE are its storage and transport at ambient temperature.
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Affiliation(s)
- X Su
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | - D Fang
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | - Y Liu
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | - G Ruan
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada.,College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi, China
| | - J Seuntjens
- Department of Oncology, Medical Physics Unit, McGill University, Montreal, QC, Canada
| | - J M Kinsella
- Department of Bioengineering, McGill University, Montreal, QC, Canada
| | - S D Tran
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada
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25
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Zhao H, Wang J, Fang D, Lee O, Chatterton RT, Stearns V, Khan SA, Bulun SE. Adiposity Results in Metabolic and Inflammation Differences in Premenopausal and Postmenopausal Women Consistent with the Difference in Breast Cancer Risk. Horm Cancer 2018; 9:229-239. [PMID: 29546532 PMCID: PMC10355891 DOI: 10.1007/s12672-018-0329-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 03/05/2018] [Indexed: 11/28/2022]
Abstract
Obesity is associated with increased risk of breast cancer in postmenopausal but not in premenopausal women. Many factors may be responsible for this difference. The aim of this study was to determine the mechanisms by which the genes related to the AMPK pathway, inflammation, and estrogen actions are affected by adiposity in breast tissue with the objective of identifying differences that may explain the different breast cancer risk in premenopausal and postmenopausal women. Random fine needle aspirates (rFNAs) of breast tissue were collected from 57 premenopausal and 55 postmenopausal women and were classified as normal weight, overweight, or obese. Expression levels of 21 target genes were determined using a TaqMan Low Density Array procedure. Breast tissue estradiol levels were measured by a liquid chromatography-tandem mass spectrometry procedure, and serum estradiol and follicle-stimulating hormone (FSH) were measured by a radioimmunoassay and an enzyme-linked immunosorbent assay, respectively. We found that in postmenopausal women, serum and tissue estradiol levels were increased in those who were overweight, and serum FSH levels were decreased in obese status. Interestingly, RPS6KB1, an AMPK downstream-responsive gene for protein synthesis and cell growth, and estrogen receptor α (encoded by the ESR1 gene) and its target gene GATA3 were significantly decreased in rFNA of premenopausal, obese women. In postmenopausal women, RPS6KB1, ESR1, and GATA3 expression remained unchanged in relation to adiposity. However, prostaglandin-endoperoxide synthase 2 (PTGS2), cyclin D1 (CCND1), and another ESR1 target gene, TFF1, were elevated in rFNA of obese postmenopausal women. Thus, as bodyweight increases, gene expression is indicative of increased proliferation in postmenopausal women but decreased proliferation in premenopausal women. Overall, our data reveal a novel process by which obesity promotes the risk of breast cancer in postmenopausal but not premenopausal women.
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Affiliation(s)
- H Zhao
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
- Division of Reproductive Science in Medicine, Department of Obstetrics and Gynecology, Feinberg School of Medicine at Northwestern University, Robert H. Lurie Comprehensive Cancer Center, 303 E. Superior Street, Suite 4-121, Chicago, IL, 60611, USA.
| | - J Wang
- Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - D Fang
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - O Lee
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - R T Chatterton
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - V Stearns
- Kimmel Cancer Center, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - S A Khan
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - S E Bulun
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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Li M, Lei H, Xu Y, Li H, Yang B, Yu C, Yuan Y, Fang D, Xin Z, Guan R. Exosomes derived from mesenchymal stem cells exert therapeutic effect in a rat model of cavernous nerves injury. Andrology 2018; 6:927-935. [PMID: 30009463 DOI: 10.1111/andr.12519] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 04/25/2018] [Accepted: 06/05/2018] [Indexed: 01/08/2023]
Affiliation(s)
- M. Li
- Molecular Biology Laboratory of Andrology Center; Peking University First Hospital; Peking University; Beijing China
| | - H. Lei
- Department of Urology; Beijing Chao-Yang Hospital; Capital Medical University; Beijing China
| | - Y. Xu
- Department of Urology; First Hospital Affiliated to Chinese; PLA General Hospital; Beijing China
| | - H. Li
- Molecular Biology Laboratory of Andrology Center; Peking University First Hospital; Peking University; Beijing China
| | - B. Yang
- Molecular Biology Laboratory of Andrology Center; Peking University First Hospital; Peking University; Beijing China
| | - C. Yu
- Department of Urology; General Hospital of Ningxia Medical University; Ningxia Medical University; Ningxia China
| | - Y. Yuan
- Molecular Biology Laboratory of Andrology Center; Peking University First Hospital; Peking University; Beijing China
| | - D. Fang
- Molecular Biology Laboratory of Andrology Center; Peking University First Hospital; Peking University; Beijing China
| | - Z. Xin
- Molecular Biology Laboratory of Andrology Center; Peking University First Hospital; Peking University; Beijing China
| | - R. Guan
- Molecular Biology Laboratory of Andrology Center; Peking University First Hospital; Peking University; Beijing China
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27
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Wang Y, Cao C, Fang D, Hu Y. Role of APC-mediated MDR-1/CLCX-1 signaling pathway in ovarian tumors. J BIOL REG HOMEOS AG 2018; 32:529-536. [PMID: 29921377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We explored the role of APC-mediated MDR-1/CLCX-1 signaling pathway in ovarian tumors. In this study, ovarian tumor cell lines SKOV-3, ES-2 and MCV-152 were used to conduct the research. Fluorescence quantitative PCR and Western-blotting were used to investigate the effects of MDR-1/CLCX-1 signaling pathway in ovarian tumors. The effects of the APC gene silencing and overexpression on proliferation and apoptosis of ovarian tumor cells were detected by flow cytometry. Compared to normal cells, the expression of APC gene mRNA in ovarian tumor cells was significantly decreased (p less than 0.05). Western-blotting results showed that the level of APC protein in ovarian tumor cells was significantly lower than that in normal tissue, while MDR-1/CLCX-1 related proteins levels were significantly increased (p less than 0.05). In the APC gene silenced ovarian tumor cell lines, the expression of MDR-1/CLCX-1 was significantly higher than that of the untreated group (p less than 0.05), and apoptosis of ovarian tumor cells decreased. However, in ovarian tumor cell lines that over-expressed APC gene, the expression of MDR-1/CLCX-1 was significantly lower than that of the untreated group (p less than 0.05), and apoptosis of ovarian tumor cells was increased. There is a certain correlation between the APC gene and ovarian tumors, and the APC gene mediates the apoptosis of tumor cells through the MDR-1/CLCX-1 signaling pathway.
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Affiliation(s)
- Y Wang
- Department of Gynecology, Maternal and Child Health Care Hospital, Laiwu City, Shandong Province, China
| | - C Cao
- Department of Gynecology, Maternal and Child Health Care Hospital, Laiwu City, Shandong Province, China
| | - D Fang
- Department of Gynecology, Maternal and Child Health Care Hospital, Laiwu City, Shandong Province, China
| | - Y Hu
- Department of Gynecology, Maternal and Child Health Care Hospital, Laiwu City, Shandong Province, China
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Mao JB, Wu SL, Chen YQ, Dong YG, Zheng B, Tao JW, Zhao SX, Fang D, Shen LJ. [The efficiency of 23 G vitrectomy combined with preoperative subtenon injection of triamcinolone acetonide for treatment of retinal detachment associated with choroidal detachment]. Zhonghua Yan Ke Za Zhi 2018; 54:252-257. [PMID: 29747353 DOI: 10.3760/cma.j.issn.0412-4081.2018.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the efficiency of 23 G vitrectomy combined with preoperative subtenon injecfion of triamcinolone acetonide for treatment of rhegmatogenous retinal detachment associated with choroidal detachment. Methods: A retrospective analysis. Forty-eight (16 males and 32 females, aged 57.3±13.9) consecutive patients (48 eyes) who were diagnosed with rhegmatogenous retinal detachment associated with choroidal detachment and received 23 G vitrectomy at the Eye Hospital of Wenzhou Medical University during January 2012 and January 2015 were enrolled. Twenty-three eyes were treated with subtenon injection TA 5 d before the planned 23 G vitrectomy (TA group). Twenty-five eyes were treated with dexamethasone 3 to 5 d before the planned vitrectomy (Dex group). Type-B ultrasonic, intraocular pressure, best corrected visual acuity examinations were conducted for all eyes on admission day, preoperatively and at 1 month, 3 month postoperatively, and during the last visit. The rate of reattachment, change of height of choroidal detachment, intraocular pressure, best corrected visual acuity, and the complication of the eyes between the two groups were compared. All patients were followed up at least half a year after the repair surgery. Results: The intraocular pressure of the TA group was higher than the Dex group[(8.58±3.83)mmHg vs. (6.70±2.49)mmHg (1 mmHg=0.133 kPa), (t=2.032)], and the height of choroidal detachment was lower in TA group [0.90(0.00, 3.84)mm vs. 4.03(1.05, 5.38)mm, Z=-2.569, P<0.05]. There is no statistic difference between the reattachment rate of the two groups [95.7%(22/23) vs. 76.0%(19/25), χ(2)=2.304, P=0.129], but it seems it was better in TA group. The best corrected visual acuity results of the last visit was better in TA group than Dex group [(0.91±0.54) vs. (1.25±0.62), t=-2.034, P=0.048]. The rate of hypertention was higher in TA group than Dex group at 1 month, 3 month postoperatively(χ(2)=2.304, 5.648, P<0.05), while there was no statistic difference of hypertention rate during last visit between the two groups (χ(2)=0.006, P=0.941). Conclusions: The treatment of 23 G vitrectomy combined with subtenon injection of triamcinolone acetonide can improve the intraocular pressure, reduce the height of choroidal detachment, and improve the best corrected visual acuity after the surgery, but it may cause heyertenion. (Chin J Ophthalmol, 2018, 54: 252-257).
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Affiliation(s)
- J B Mao
- The affiliated Eye Hospital of Wenzhou Medical University, Wenzhou 325027, China
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29
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Zhang Y, Wang X, Wang C, Liu J, Zhai H, Liu B, Zhao X, Fang D. Facile fabrication of zinc oxide coated superhydrophobic and superoleophilic meshes for efficient oil/water separation. RSC Adv 2018; 8:35150-35156. [PMID: 35547068 PMCID: PMC9087884 DOI: 10.1039/c8ra06059b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 07/17/2018] [Accepted: 10/05/2018] [Indexed: 11/22/2022] Open
Abstract
Zinc oxide (ZnO) coated superhydrophobic and superoleophilic stainless steel meshes are facilely fabricated via chemical immersion growth and subsequent surface modification. The as-prepared meshes show good mechanical durability, chemical stability and corrosion-resistant properties due to a combination of the hierarchical ZnO structure and the low surface energy modification. More importantly, the as-prepared meshes are used for highly efficient separation of various oil/water mixtures. Meanwhile, a new oil skimmer based on the as-prepared mesh is proposed to spontaneously collect floating oil with high separation efficiency and desirable durability. Zinc oxide coated superhydrophobic and superoleophilic stainless steel mesh was fabricated by a simple and inexpensive approach for efficient oil/water separation.![]()
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Affiliation(s)
- Yuezhong Zhang
- College of Chemical and Biological Engineering
- Taiyuan University of Science and Technology
- Taiyuan
- China
| | - Xiaoyu Wang
- College of Materials Science and Engineering
- Taiyuan University of Science and Technology
- Taiyuan
- China
| | - Chunhui Wang
- College of Materials Science and Engineering
- Taiyuan University of Science and Technology
- Taiyuan
- China
| | - Jiangjiang Liu
- College of Materials Science and Engineering
- Taiyuan University of Science and Technology
- Taiyuan
- China
| | - Hongbiao Zhai
- College of Materials Science and Engineering
- Taiyuan University of Science and Technology
- Taiyuan
- China
| | - Baosheng Liu
- College of Materials Science and Engineering
- Taiyuan University of Science and Technology
- Taiyuan
- China
| | - Xudong Zhao
- College of Chemical and Biological Engineering
- Taiyuan University of Science and Technology
- Taiyuan
- China
| | - Daqing Fang
- College of Materials Science and Engineering
- Taiyuan University of Science and Technology
- Taiyuan
- China
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30
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Luo JH, Qiu WJ, Fang D, Ye J, Han LS, Zhang HW, Yu YG, Liang LL, Gu XF. [Clinical and gene mutation analysis of three children with late-onset glycogen storage disease type Ⅱ with hypertrophic cardiomyopathy]. Zhonghua Er Ke Za Zhi 2017; 55:423-427. [PMID: 28592009 DOI: 10.3760/cma.j.issn.0578-1310.2017.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical and laboratory features of three children with late-onset type Ⅱ glycogen storage disease(GSD) who presented with hypertrophic cardiomyopathy and to analyze the effect of five mutations identified on the acid-α-glucosidase (GAA) activity and stability. Method: Three cases of children with muscle weakness were included in this study.GAA activity was analyzed in Dried Blood Spot of the patients.DNA was extracted from peripheral blood in all the patients and their parents and subjected to polymerase chain reaction and directly sequencing of GAA gene.Five mutant pcDNA3.1-myc-his-GAA expression plasmids(p.G478R, p.P361L, p.P266S, p.Q323X, p.R672Q) were constructed and transient instantaneously transfected into 293T cells to analyze the enzyme activity and stability of GAA. Result: All the three children had the onset of disease at 3 years or 1.5 years of age.They presented with developmental delay, muscle weakness and hypertrophic cardiomyopathy.GAA activity of 3 patients was 2.65, 3.55 and 1.51 pmol(punch·h)(8.00-98.02)respectively. Genetic analysis found 5 mutations (p.G478R, p. P361L, p. P266S, p. Q323X, p. R672Q), and all of these 3 cases had clinical manifestations and were diagnosed as late-onset type Ⅱ glycogen storage disease.Five mutant pcDNA3.1-myc-his-GAA expression plasmids were transfected into 293T cells.Five mutant enzyme activities were found to be only 9.9%-22.5% of the wild-type enzyme activity and the protein expression of the five mutants was 32.0%-63.9% compared with the wild type. Conclusion: This study reports 3 children with late-onset GSD Ⅱ accompanied by hypertrophic cardiomyopathy and compensatory stage of cardiac function in addition to limb muscle weakness.Five pathogenic mutations were identified, and these 5 mutations result in decreased GAA activity and GAA expression by in vitro functional analysis.
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Affiliation(s)
- J H Luo
- Department of Pediatric Endocrinology and Genetics, Shanghai Institute of Pediatric Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
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31
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Li X, Wang E, Yin B, Fang D, Chen P, Wang G, Zhao J, Zhang H, Chen W. Effects of Lactobacillus casei CCFM419 on insulin resistance and gut microbiota in type 2 diabetic mice. Benef Microbes 2017; 8:421-432. [PMID: 28504567 DOI: 10.3920/bm2016.0167] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The antidiabetic effect of Lactobacillus is increasingly recognized worldwide. In this research, the hypoglycemic activity of Lactobacillus casei CCFM419 was investigated in mice with high-fat and low-dose streptozotocin induced type 2 diabetes. Oral L. casei CCFM419 administration favourably regulated blood glucose balance, increased glucose tolerance and protected islets in the diabetic mice, accompanied by an improvement in lipid metabolism. The homeostasis model of insulin resistance, insulin level and insulin tolerance test and mRNA expression of PI3K/Akt signalling pathway indexes revealed that L. casei CCFM419 had a positive effect on insulin resistance. Furthermore, treatment with L. casei CCFM419 recovered the level of short-chain fatty acids and increased the abundance of butyrate-producing bacteria, such as Allobaculum and Bacteriodes. These results demonstrated that L. casei CCFM419 had the potential ability to ameliorate insulin resistance and hyperglycaemic in type 2 diabetic mice through underlying PI3K/Akt signalling pathway and short-chain fatty acids/gut microbiota pathways.
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Affiliation(s)
- X Li
- 1 State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China P.R.,2 Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China P.R
| | - E Wang
- 1 State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China P.R.,2 Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China P.R
| | - B Yin
- 3 Kangyuan Dairy Co., Ltd., Yangzhou University, Yangzhou 225004, China P.R
| | - D Fang
- 3 Kangyuan Dairy Co., Ltd., Yangzhou University, Yangzhou 225004, China P.R
| | - P Chen
- 5 Shanxi University of Technology, School of Biological Science and Engineering, Hanzhong 723001, China P.R
| | - G Wang
- 1 State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China P.R.,2 Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China P.R
| | - J Zhao
- 1 State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China P.R.,2 Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China P.R
| | - H Zhang
- 1 State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China P.R.,2 Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China P.R
| | - W Chen
- 1 State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China P.R.,2 Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi 214122, China P.R.,4 Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, China P.R
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32
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Frias J, Guja C, Hardy E, Azazuddin A, Fang D, Öhman P, Jabbour S, Rodrigues Costa M. Exenatide einmal wöchentlich plus Dapagliflozin einmal täglich versus Exenatide oder Dapagliflozin allein bei Patienten mit Typ 2 Diabetes, für die eine Metformin-Monotherapie nicht ausreichend war (DURATION-8): Eine 28-wöchige, multizentrische, doppelblinde, randomisierte, kontrollierte Phase-3-Studie. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601752] [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: 10/19/2022]
Affiliation(s)
- J Frias
- National Research Institute, Los Angeles, United States
| | - C Guja
- University of Medicine and Pharmacy, Bucarest, Romania
| | - E Hardy
- AstraZeneca, Gaithersburg, United States
| | - A Azazuddin
- Rush University Medical Center, Chicago, United States
| | - D Fang
- AstraZeneca, Gaithersburg, United States
| | - P Öhman
- AstraZeneca, Gaithersburg, United States
| | - S Jabbour
- Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, United States
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Li X, Wang N, Yin B, Fang D, Jiang T, Fang S, Zhao J, Zhang H, Wang G, Chen W. Effects of Lactobacillus plantarum CCFM0236 on hyperglycaemia and insulin resistance in high-fat and streptozotocin-induced type 2 diabetic mice. J Appl Microbiol 2017; 121:1727-1736. [PMID: 27552342 DOI: 10.1111/jam.13276] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 07/31/2016] [Accepted: 08/15/2016] [Indexed: 01/10/2023]
Abstract
AIMS The aim of this study was to rapidly screen potential hypoglycaemic strain by α-glucosidase inhibitory activity in vitro, then explored the antidiabetic effect of Lactobacillus plantarum CCFM0236 in vivo. METHODS AND RESULTS The cell-free supernatant of Lact. plantarum CCFM0236 significantly inhibited α-glucosidase activity in vitro. Therefore, the effects of Lact. plantarum CCFM0236, with potential hypoglycaemia activity, on insulin resistance and hyperglycaemia were explored in high-fat and streptozotocin-induced type 2 diabetes mice. Oral administration of Lact. plantarum CCFM0236 was found to decrease food intake, blood glucose level, glycosylated haemoglobin level and leptin level. Treatments of Lact. plantarum CCFM0236 also favourably regulated insulin level, AUCglucose , and HOMA-IR index, and increased the activities of glutathione peroxidase and the levels of glutathione, high-density lipoprotein cholesterol and interleukin-10. In addition, Lact. plantarum CCFM0236 reduced levels of malondialdehyde and tumour necrosis factor-α and protected pancreas function. CONCLUSIONS Lactobacillus plantarum CCFM0236 has potential hypoglycaemic ability by ameliorating insulin resistance, antioxidant capacity and systemic inflammation in mice. SIGNIFICANCE AND IMPACT OF THE STUDY The method of α-glucosidase inhibitory activity could be effectively used to screen potential hypoglycaemic products and Lact. plantarum CCFM0236 might be a promising therapeutic agent for ameliorating type 2 diabetes.
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Affiliation(s)
- X Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, China
| | - N Wang
- School of Business, Jiangnan University, Wuxi, China
| | - B Yin
- Kangyuan Dairy Co., Ltd., Yangzhou University, Yangzhou, China
| | - D Fang
- Kangyuan Dairy Co., Ltd., Yangzhou University, Yangzhou, China
| | - T Jiang
- Jiangsu Wecare Biotechnology co., Ltd, Wujiang, China
| | - S Fang
- Jiangsu Wecare Biotechnology co., Ltd, Wujiang, China
| | - J Zhao
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, China
| | - H Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, China
| | - G Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, China
| | - W Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, China.,Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, China
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Song G, Ji GJ, Fang D, Huang C, Xiong GY, He Q, Yang XY, Shen Q, He ZS, Zhou LQ. [Clinical and pathological characteristics of prostate cancer patients younger than 55 years old]. Zhonghua Yi Xue Za Zhi 2017; 97:608-611. [PMID: 28260306 DOI: 10.3760/cma.j.issn.0376-2491.2017.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Prostate cancer is commonly diagnosed among old men while younger men are rarely diagnosed with prostate cancer. In this study we identify clinical and pathological features of 154 patients with prostate cancer younger than 55 years old and to assist intreatment decisions. Methods: The medical records of 154 prostate cancer patients younger than 55 years old in Peking University First Hospital from Feb 1953 to Jun 2016 were reviewed, retrospectively. Data was collected including symptoms, digital rectal examination (DRE), prostate-specific antigen (PSA), Gleason score, tumor stage, treatment strategies. Results: The mean age was 50.9±4.5, and 25.3% patients were between 40-50 years. Fifty-six (36.4%) patients initially presented with lower urinary tract symptoms. A solid mass could be found by digital rectal examination in 48(31.2%) patients. All patients were diagnosed by pathology of biopsy or surgery. The median Gleason score was 8. Gleason 2-6, 3+ 4, 4+ 3, 8, 9-10 were 15 cases(9.7%), 28 cases(18.2%), 21 cases(13.6%), 15 cases(9.7%), 51 cases(33.1%), respectively. Based on 2009 AJCC TNM Classification criteria the distribution of tumor stage was T1, T2, T3, and T4 in 2(1.3%), 54 (35.1%), 60 (39.0%), and 37 (24.0%) patients. Forty patients (25.9%) were found with bone metastasis and four (2.5%) suffered from visceral metastasis. Fifty-three(34.4%)underwent hormonal therapy and 79(51.3%) underwent radical prostatectomy. Conclusion: Younger prostate caner patients usually presented with LUTS symptoms and were featured for higher tumor stage and aggressiveness. More optimal and personalized risk-based therapy options are required.
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Affiliation(s)
- G Song
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Center, Beijing 100034, China
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Yuan Y, Zhang Z, Cui W, Fang D, Xin Z. 118 Number of Intravaginal Thrusts Before Ejaculation (Nitbe), A Convenient and Reliable Tool for Premature Ejaculation Assessment. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.11.071] [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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Xing YC, Xiong GY, Fang D, Zhang Z, Cai L, Zhang L, He ZS, Li XS, Zhou LQ. [Preoperative prognostic factors and preoperative risk stratification of upper tract urothelial carcinoma]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:1032-1037. [PMID: 27987509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To identify the preoperative prognostic factors of upper tract urothelial carcinoma (UTUC) and construct preoperative risk stratification system. METHODS A retrospective study including 686 patients who were diagnosed with UTUC and received radical nephroureterectomy or partial ureterectomy in Peking University First Hospital during 2003 and 2013. RESULTS Of the 686 UTUC patients, 303 (44.2%) were male and 383 (55.8%) female. The postoperative pathological examination showed that 203 (29.6%) had high tumor stages (T3, T4), 300 (43.7%) had high tumor grades (G3) and 54 (7.9%) had lymph nodes metastasis (N1). After multivariate analysis, renal pelvic tumor, large tumor, estimated glomerular filtration rate (eGFR)≥30 mL/min, and male were associated with high tumor stage. Ureteral tumor, large tumor, and non-smoking history were associated with high tumor grade. Renal pelvis tumor, large tumor, and preoperative anemia were associated with positive N status. During the follow-up, 208 (30.3%) died for cancer and 210 (30.6%) developed intravesical recurrence. Multivariate analysis showed: large tumor (P=0.001), concomitant ipsilateral hydronephrosis (P=0.041), and preoperative anemia (P=0.001) were independently associated cancer-specific mortality after surgery, while ureteral tumor (P=0.04), multiple tumor (P=0.005), and high preoperative creatinine (P=0.036) were independent risk factors for intravesical recurrence. CONCLUSION Of the preoperative clinical parameters of UTUC patients, the large tumor, concomitant ipsilateral hydronephrosis, and preoperative anemia were independently associated with cancer-specific mortality after surgery. Ureteral tumor, multiple tumor, and high preoperative creatinine were independently associated with intravesical recurrence after surgery.
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Affiliation(s)
- Y C Xing
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - G Y Xiong
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - D Fang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Z Zhang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - L Cai
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - L Zhang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Z S He
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - X S Li
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - L Q Zhou
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
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Deng W, Wang Q, Xiao Z, Tan L, Zhou Z, Zhang H, Chen D, Feng Q, Liang J, He J, Gao S, Sun K, Cheng G, Liu X, Fang D, Xue Q, Mao Y, Wang D, Li J. 231P Nomogram to predict prognosis in thoracic esophageal squamous cell carcinoma after neoadjuvant radiotherapy or chemoradiotherapy. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw582.012] [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: 11/14/2022] Open
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38
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Deng W, Wang Q, Xiao Z, Tan L, Zhou Z, Zhang H, Chen D, Feng Q, Liang J, Gao S, Sun K, Cheng G, Liu X, Fang D, Xue Q, Mao Y, Wang D. 231P Nomogram to predict prognosis in thoracic esophageal squamous cell carcinoma after neoadjuvant radiotherapy or chemoradiotherapy. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00388-4] [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] Open
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39
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Lichtenberger LM, Phan T, Fang D, Edler S, Philip J, Li-Geng T, Dial EJ. Bioavailability of aspirin in rats comparing the drug's uptake into gastrointestinal tissue and vascular and lymphatic systems: implications on aspirin's chemopreventive action. J Physiol Pharmacol 2016; 67:635-642. [PMID: 28011944] [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] [Received: 08/02/2016] [Accepted: 10/31/2016] [Indexed: 06/06/2023]
Abstract
Aspirin is an effective analgesic and antiplatelet drug that in addition to its ability to reduce pain, inflammation and fever, appears to have efficacy in the prevention/treatment of a range of diseases including heart disease, numerous cancers and Alzheimer's. It is important to understand the bioavailability of aspirin and its major metabolite, salicylic acid, since dosage and route of administration can vary for treating differing diseases, and the major side-effects of aspirin, upper gastrointestinal ulceration and bleeding, are dose-dependent. We examined the time course for gastroduodenal uptake of aspirin and the appearance of its major metabolite salicylic acid in blood and lymph after intragastric (to simulate oral) and intraduodenal (to simulate enteric-coating) dosing in rats. Results show that after intragastric dosing, intact aspirin is absorbed primarily by the gastric mucosa and to a lesser extent by the duodenal mucosa. When aspirin is dosed intragastrically or intraduodenally, a much greater concentration of aspirin enters the lymph than the blood. In contrast, the concentration of salicylic acid was higher in blood than in lymph. Lymph levels of both aspirin and salicylic acid were sufficiently high so as to perform a pharmacologic function there, possibly as a chemopreventive agent against colon cancer and potentially the metastatic spread of non-gastrointestinal cancers.
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Affiliation(s)
- L M Lichtenberger
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston - McGovern Medical School, Houston, TX, USA.
| | - T Phan
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston - McGovern Medical School, Houston, TX, USA
| | - D Fang
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston - McGovern Medical School, Houston, TX, USA
| | - S Edler
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston - McGovern Medical School, Houston, TX, USA
| | - J Philip
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston - McGovern Medical School, Houston, TX, USA
| | - T Li-Geng
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston - McGovern Medical School, Houston, TX, USA
| | - E J Dial
- Department of Integrative Biology and Pharmacology, The University of Texas Health Science Center at Houston - McGovern Medical School, Houston, TX, USA
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Yang J, Xiao Z, He J, Gao S, Sun K, Liu X, Fang D, Mu J, Wang D. Nomogram Predicting Survival for Pathological T2∼3N0M0 Stage Thoracic Esophageal Squamous Cell Carcinoma After Radical Surgery. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1078] [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: 10/20/2022]
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41
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Desai A, Ku E, Shi C, Fang D, Lawrence C, Chen Y, Feinn R, Iannuzzi C. Is Contouring the Whole Breast Necessary for Tangential Field-in-Field 3-Dimensional Breast Planning? Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.617] [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: 11/24/2022]
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42
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Fang D, Chen H, Zhu JY, Wang W, Teng Y, Ding HF, Jing Q, Su SB, Huang S. Epithelial-mesenchymal transition of ovarian cancer cells is sustained by Rac1 through simultaneous activation of MEK1/2 and Src signaling pathways. Oncogene 2016; 36:1546-1558. [PMID: 27617576 PMCID: PMC5346482 DOI: 10.1038/onc.2016.323] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [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: 08/31/2015] [Revised: 06/07/2016] [Accepted: 07/28/2016] [Indexed: 12/14/2022]
Abstract
Epithelial-mesenchymal transition (EMT) is regarded as a crucial contributing factor to cancer progression. Diverse factors have been identified as potent EMT inducers in ovarian cancer. However, molecular mechanism sustaining EMT of ovarian cancer cells remains elusive. Here, we show that the presence of SOS1/EPS8/ABI1 complex is critical for sustained EMT traits of ovarian cancer cells. Consistent with the role of SOS1/EPS8/ABI1 complex as a Rac1-specific guanine nucleotide exchange factor, depleting Rac1 results in the loss of most of mesenchymal traits in mesenchymal-like ovarian cancer cells while expressing constitutively active Rac1 leads to EMT in epithelial-like ovarian cancer cells. With the aid of clinically tested inhibitors targeting various EMT-associated signaling pathways, we show that only combined treatment of MEK1/2 and Src inhibitors can abolish constitutively active Rac1-led EMT and mesenchymal traits displayed by mesenchymal-like ovarian cancer cells. Further experiments also reveal that EMT can be induced in epithelial-like ovarian cancer cells by co-expressing constitutively active MEK1 and Src rather than either alone. As the activities of Erk and Src are higher in ovarian cancer cells with constitutively active Rac1, we conclude that Rac1 sustains ovarian cancer cell EMT through simultaneous activation of MEK1/2 and Src signaling pathways. Importantly, we demonstrate that combined use of MEK1/2 and Src inhibitors effectively suppresses development of intraperitoneal xenografts and prolongs the survival of ovarian cancer-bearing mice. This study suggests that cocktail of MEK1/2 and Src inhibitors represents an effective therapeutic strategy against ovarian cancer progression.
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Affiliation(s)
- D Fang
- Research Center for Traditional Chinese Medicine Complexity System, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,E-institute of Shanghai Municipal Education Committee, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - H Chen
- Department of Obstetrics and Gynecology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - J Y Zhu
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
| | - W Wang
- Research Center for Traditional Chinese Medicine Complexity System, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Y Teng
- Department of Oral Biology, Dental College of Georgia, Augusta University, Augusta, GA, USA.,Georgia Cancer Center, Augusta University, Augusta, GA, USA
| | - H-F Ding
- Georgia Cancer Center, Augusta University, Augusta, GA, USA
| | - Q Jing
- Department of Cardiology, Changhai Hospital, Shanghai, China
| | - S-B Su
- Research Center for Traditional Chinese Medicine Complexity System, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,E-institute of Shanghai Municipal Education Committee, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - S Huang
- Research Center for Traditional Chinese Medicine Complexity System, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,E-institute of Shanghai Municipal Education Committee, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
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Abstract
Spinal pseudarthrosis is an important mechanical complication in longstanding ankylosing spondylitis. Thirty-five patients with 40 lesions were studied. Three lesions through vertebral bodies resulted from complete fractures. The rest occurred at interspaces, more common at the lower thoracic and upper lumbar segments. Double pseudarthrotic lesions were observed in 5 patients. Progressive osteolysis of the anterior elements was prominent, with variable sclerosis, osteophytes, vacuum phenomenon, subluxation and fragmentation. A posterior element weak link, as a bony break or facet joint non-fusion, was an essential component in every lesion, playing an initiating or perpetuating role in its pathogenesis. Mechanical derangement from trauma, severe round kyphosis, spondylodiscitis, hip disease, spinal operation and unusual activities may be contributing factors. Initial treatment is conservative, but 16 patients required operative stabilisation.
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Fang D, Seisen T, Yang K, Liu P, Fan X, Singla N, Xiong G, Zhang L, Li X, Zhou L. A systematic review and meta-analysis of oncological and renal function outcomes obtained after segmental ureterectomy versus radical nephroureterectomy for upper tract urothelial carcinoma. Eur J Surg Oncol 2016; 42:1625-1635. [PMID: 27612412 DOI: 10.1016/j.ejso.2016.08.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 08/03/2016] [Accepted: 08/06/2016] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE To perform a systematic review and meta-analysis of the comparative studies reporting oncological and renal function outcomes of segmental ureterectomy (SU) versus radical nephroureterectomy (RNU) for upper tract urothelial carcinomas (UTUC). MATERIALS AND METHODS A literature search on Pubmed, Embase, and the Cochrane library was conducted according to the PRISMA guidelines, and a meta-analysis was performed to assess cancer-specific survival (CSS), overall survival (OS), recurrence-free survival (RFS), intravesical recurrence free survival (IVRFS) and surgery-related variations in estimated glomerular filtration rate (eGFR). RESULTS A total of 11 retrospective studies with 3963 patients who underwent either SU (n = 983; 24.8%) or RNU (n = 2980; 75.2%) were included. Although patients treated with SU were more likely to be diagnosed with favorable pathological features, the meta-analysis of unadjusted data revealed no significant difference between both groups in terms of CSS (HR 0.90, p = 0.33) and OS (HR 0.98, p = 0.93). Accordingly, the meta-analysis of adjusted data confirmed equivalent CSS (HR = 0.90, p = 0.47) between SU and RNU. Similarly, no significant difference was found in terms of RFS (HR 1.06, p = 0.72) and IVRFS (HR 1.35, p = 0.39). However, a significant decreased risk of impaired renal function was observed after SU when compared to RNU (mean eGFR difference = 9.32 ml/1.73 m2, p = 0.007). CONCLUSION Although adverse patient and tumor characteristics were not equally balanced between treatment arms, our systematic review and meta-analysis supports similar oncological outcomes between SU and RNU, with better preservation of renal function after SU. As such, SU should be preferably used as the first-line treatment for low-risk ureter tumors, while considered for selected cases of high-risk disease.
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Affiliation(s)
- D Fang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Centre, No. 8 Xishiku St, Xicheng District, Beijing 100034, China
| | - T Seisen
- Academic Department of Urology, Pitié Salpétrière Hospital, APHP, 47-83 Boulevard de l'Hôpital, Paris F-75013, France; UPMC University Paris 06, GRC5, ONCOTYPE-Uro, Institut Universitaire de Cancérologie, Paris F-75005, France
| | - K Yang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Centre, No. 8 Xishiku St, Xicheng District, Beijing 100034, China
| | - P Liu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Centre, No. 8 Xishiku St, Xicheng District, Beijing 100034, China
| | - X Fan
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No.107 Yanjiang West Rd, Yuexiu District, Guangzhou 510120, China
| | - N Singla
- Department of Urology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX 75390, USA
| | - G Xiong
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Centre, No. 8 Xishiku St, Xicheng District, Beijing 100034, China
| | - L Zhang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Centre, No. 8 Xishiku St, Xicheng District, Beijing 100034, China
| | - X Li
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Centre, No. 8 Xishiku St, Xicheng District, Beijing 100034, China.
| | - L Zhou
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological Cancer Centre, No. 8 Xishiku St, Xicheng District, Beijing 100034, China
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Liu J, Xiong GY, Tang Q, Fang D, Li XS, Zhou LQ. [Methylation status of RASSF1A gene promoter in upper tract urothelial carcinoma and its clinical significance]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:571-578. [PMID: 29263491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the methylation status of the RASSF1A gene promoter in upper tract urothelial carcinoma (UTUC) tissues and its correlation with clinicopathologic characteristics and postoperative recurrence of primary UTUC. METHODS In a retrospective design, a total of 687 patients who underwent surgeries for primary UTUC in the urology department of Peking University First Hospital were enrolled. The methylation status of the RASSF1A gene promoter was analyzed using methylation-sensitive polymerase chain reaction on tumor specimens. RESULTS Aberrant methylation for the RASSF1A gene promoter was detected in 183 (26.6%) DNA samples in total. Aberrant methylation of the RASSF1A gene was strongly associated with tobacco consumption (P=0.044), ipsilateral hydronephrosis (P<0.001 ), tumor location (P<0.001 ), tumor stage (P=0.001), tumor grade (P=0.007), lymph node metastasis (P=0.001) and growth pattern (P=0.013). The methylated RASSF1A gene promoter was an independent risk factor for bladder recurrence (P<0.001, HR=0.471) and contralateral recurrence (P=0.030, HR=0.269) of UTUC after surgery. Hypermethylated RASSF1A was predictive for improved bladder recurrence-free survival (BRFS) (P<0.001) and contralateral recurrence-free survival (CRFS) (P=0.021) in the UTUC patients. Compared with the patients with unmethylated RASSF1A, the patients containing tumors with hypermethylated RASSF1A had tendency toward longer recurrence-free survival time [(114.4±3.9) months vs. (84.0±3.2) months for BRFS, (138.1±1.8) months vs. (132.9±1.9) months for CRFS] and higher estimated cumulative recurrence-free survive rates ( five-year survival rate for example, 79.8%±3.4% vs. 57.4%±2.6% for BRFS, 98.9%±0.8% vs. 93.0%±1.4% for CRFS). Additionally, tumor multifocality (P=0.002, HR=1.538), and ureteroscopy before surgery (P=0.001, HR=1.725) were independent risk factors for bladder recurrence in postoperative UTUC patients. CONCLUSION The methylation status of the RASSF1A gene promoter appears to be a promising epigenomic biomarker for assessing the aggressiveness of UTUC and a predictor predicting the urinary tract recurrence after surgery.
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Affiliation(s)
- J Liu
- Department of Urology, Peking University First Hospital, Beijing 100034, China
| | - G Y Xiong
- Department of Urology, Peking University First Hospital, Beijing 100034, China
| | - Q Tang
- Department of Urology, Peking University First Hospital, Beijing 100034, China
| | - D Fang
- Department of Urology, Peking University First Hospital, Beijing 100034, China
| | - X S Li
- Department of Urology, Peking University First Hospital, Beijing 100034, China
| | - L Q Zhou
- Department of Urology, Peking University First Hospital, Beijing 100034, China
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Bao ZQ, Fang D, Yue CB, Cai L, Wang TY, Li XS, Zhou LQ. [Primary penoscrotal extra-mammary Paget's disease: analysis of 22 cases]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:638-642. [PMID: 29263504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the clinical characteristics, treatment and prognosis of primary penoscrotal extra-mammary Paget's disease (PSPD). METHODS The clinical and pathological data of 22 cases of primary PSPD were retrospectively reviewed. Survival rate of the overall patients, the invasive patients, and the patients with positive surgical margin or negative surgical margin were analyzed with Kaplan-Meier survival curve method. RESULTS Among all the patients with primary PSPD, the median age of onset was 64.5 (39-84) years, the median time of disease duration was 40 (2-300) months, and the median long diameter of lesion was 4.75 (1-10) cm. In the study, 12 patients (54.5%) were in pathological stage A1, 6 patients (27.3%) were in pathological stage A2, and 4 patients (18.2%) were in pathological stage B. Scrotum and penile of most patients (n=12, 54.5%) were involved, 5 patients (22.7%) were scrotum only, and 5 patients (22.7%) were penile only. Erythema (n=18, 81.8%), itchiness (n=16, 72.7%), ulcerate (n=12, 54.5%), exudation (n=11, 50.0%), and pain (n=4, 18.2%) were the major manifestations. All the patients with primary PSPD were treated with wide surgical excision. The rate of invasive patients was 77.3% (n=17). Of them, 6 patients had positive surgical margin. The surgical margins of non-invasive patients were all negative. Twelve patients exhibited local recurrence or/and metastases, and the status of surgical margins (P=0.015) and the depth of invasion (P=0.010) were important risk factors. Inguinal lymph nodes were generally involved. The difference of the delay of diagnosis between metastasis and non-metastasis was significant (P=0.040). The 5-year survival rates of the overall and invasive patients were 33.7% and 27.9%, respectively. The patients with positive surgical margin had poor prognosis. CONCLUSION Primary PSPD, with the characteristics of long duration, high invasive tendency and high incidence of local recurrence or metastases, generally occurs in the elderly. Surgery should be performed at first. The delay of diagnosis, positive surgical margins and the involvement of inguinal lymph node are important risk factors. Biopsy, frozen section and inguinal lymph node biopsy (ILNB) can standardize diagnosis and treatment.
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Affiliation(s)
- Z Q Bao
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - D Fang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - C B Yue
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - L Cai
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - T Y Wang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - X S Li
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - L Q Zhou
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
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Luo X, Fang D, Chai Y, Yang B. Effect of Ca addition on the microstructure and mechanical properties of as-cast Mg-Sm alloys. Microsc Res Tech 2016; 79:707-11. [DOI: 10.1002/jemt.22688] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 05/05/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaoping Luo
- School of Materials Science and Engineering; Taiyuan University of Science and Technology; Taiyuan Shanxi 030024 China
| | - Daqing Fang
- School of Materials Science and Engineering; Taiyuan University of Science and Technology; Taiyuan Shanxi 030024 China
| | - Yuesheng Chai
- School of Materials Science and Engineering; Taiyuan University of Science and Technology; Taiyuan Shanxi 030024 China
| | - Bin Yang
- School of Materials Science and Engineering; Taiyuan University of Science and Technology; Taiyuan Shanxi 030024 China
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Su X, Fang D, Liu Y, Ramamoorthi M, Zeitouni A, Chen W, Tran SD. Three-dimensional organotypic culture of human salivary glands: the slice culture model. Oral Dis 2016; 22:639-48. [PMID: 27214128 DOI: 10.1111/odi.12508] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/05/2016] [Accepted: 05/16/2016] [Indexed: 12/21/2022]
Abstract
OBJECTIVE A challenge in studying human salivary glands is to maintain the cells ex vivo in their three-dimensional (3D) morphology with an intact native extracellular matrix (ECM) environment. This paper established a human salivary 3D organotypic slice culture model that could maintain its physiological functions as well as allowing a direct visualization of the cells. METHODS Human salivary biopsies from six patients were embedded in agarose and submerged in cold buffer for thin (50 μm) sectioning using a vibratome. 'Salivary slices' were mechanically supported by a porous membrane insert that allowed an air-liquid interface and cultured in serum-free culture media. Cell viability, proliferation, apoptosis, physiological functions, and gene expression were assessed during 14 days of culture. RESULTS Human salivary slices maintained cell survival (70-40%) and proliferation (6-17%) for 14 days ex vivo. The protein secretory (amylase) function decreased, but fluid (intracellular calcium mobilization) function was maintained. Acinar, ductal, and myoepithelial cell populations survived and maintained their 3D organization within the slice culture model. CONCLUSION The human salivary slice culture model kept cells alive ex vivo for 14 days as well as maintaining their 3D morphology and physiological functions.
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Affiliation(s)
- X Su
- Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada.,College of Stomatology, Guangxi Medical University, Nanning, Guangxi, China
| | - D Fang
- Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | - Y Liu
- Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | - M Ramamoorthi
- Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | - A Zeitouni
- Department of Otolaryngology, McGill University Health Center, McGill University, Montreal, QC, Canada
| | - W Chen
- College of Stomatology, Guangxi Medical University, Nanning, Guangxi, China.
| | - S D Tran
- Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, Montreal, QC, Canada.
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Desai A, Ku E, Fang D, Lawrence C, Iannuzzi C, Shi C. SU-F-T-455: Is Contouring the Whole Breast Necessary for Two-Field 3D Breast Planning? Med Phys 2016. [DOI: 10.1118/1.4956640] [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: 11/07/2022] Open
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50
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Ku E, Desai A, Fang D, Lawrence C, Iannuzzi C, Shi C. SU-F-T-112: Long-Term Follow-Up of NSCLC Patients Treated with Lung SBRT Using the Modified Conformal Arc (MDCA) Planning Technique. Med Phys 2016. [DOI: 10.1118/1.4956248] [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: 11/07/2022] Open
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