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Yan LX, Liu CQ, Mei P, Liu C, Chen Y, Zhang MH, Liu J, Liu ZH, Zhang QL, Liu YH. [Multiple tracheal and bronchial glandular papilloma and adenocarcinoma with FGFR1-FILIP1 fusion and FGFR1 amplification: report of a case]. Zhonghua Bing Li Xue Za Zhi 2023; 52:847-849. [PMID: 37527993 DOI: 10.3760/cma.j.cn112151-20221116-00960] [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: 08/03/2023]
Affiliation(s)
- L X Yan
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - C Q Liu
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - P Mei
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - C Liu
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Y Chen
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - M H Zhang
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - J Liu
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Z H Liu
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Q L Zhang
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
| | - Y H Liu
- Department of Pathology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
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Feng XJ, Yan N, Wang Y, Mei P, Chen W, Lu L, Lai L. Corrosion Inhibition Studies of 8-Hydroxyquinoline Derivatives for N80 Steel in a 1.0 M HCl Solution: Experimental, Computational Chemistry, and Quantitative Structure-Activity Relationship Studies. Langmuir 2023; 39:519-532. [PMID: 36562562 DOI: 10.1021/acs.langmuir.2c02807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Twelve kinds of 8-hydroxyquinoline derivatives were synthesized and characterized. The weight loss method was used to evaluate their inhibition efficiencies (IEs) in a 1.0 M HCl solution at 333 K. The results showed that the alkyl chain length, heteroatoms (S, N, and O), and number of benzene rings significantly affect the IE. Herein, the IE of 5-[(dodecylthio)methyl]-8-quinolinol reached 98.71%. Meanwhile, the potentiodynamic polarization results indicated that all 8-hydroxyquinoline derivatives were mixed-type inhibitors. Electrochemical impedance spectroscopy results revealed that 8-hydroxyquinoline derivatives can increase polarization resistance, supporting their adsorption on the N80 steel surface. Moreover, according to density functional theory (DFT), the frontier orbital distribution and quantum chemical parameters (EHOMO, ELUMO, dipole moment μ, etc.) were calculated, and the results confirmed that the substituents of protonated 8-hydroxyquinoline derivatives significantly influenced the frontier orbital distribution. Molecular dynamics simulation illustrated that all protonated 8-hydroxyquinoline derivatives were adsorbed parallel to the Fe(110) surface, and the interaction energy (Eint) evidenced that the molecular size would affect their strength of adsorption on the Fe(110) surface. The linear and nonlinear quantitative structure-activity relationship models were established by linear regression (LR) methods and BP neural networks (NN), respectively. The LR model was established by using Eint and μ, and the coefficient of determination (R2) was 0.934. In addition, the nonlinear NN model was obtained according to IE and all parameters (DFT parameters and Eint). Then, the two calculation inhibition efficiencies (IEcal) were obtained from the LR and NN models, and the R2 values of the linear correlation between the IEcal and the experimental IE were 0.940 and 0.951, respectively. In addition, the IE of the tested inhibitor was 51.86% and the IEcal values predicted by the LR and NN models were 52.68% and 53.06%, respectively. Our results demonstrate that both the LR and NN models have good fits and predictive ability.
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Affiliation(s)
- Xiao-Jun Feng
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou434023, P. R. China
- College of Water Resources and Environment, China University of Geosciences (Beijing), Beijing100083, P. R. China
| | - Ning Yan
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou434023, P. R. China
| | - Yanqun Wang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou434023, P. R. China
| | - Ping Mei
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou434023, P. R. China
| | - Wu Chen
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou434023, P. R. China
| | - Lilin Lu
- College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan430081, P. R. China
| | - Lu Lai
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou434023, P. R. China
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He M, Li Z, Chen C, Mei P. Impact of soil types and root exudates on cadmium and petroleum hydrocarbon phytoremediation by Sorghum sudanense, Festuca arundinace, and Lolium perenne. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.1036765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
With the development of industrialization, soils around the world have been polluted by heavy metals and oil to different degrees in recent years, and soil remediation has become a global problem. Phytoremediation has a wide application prospect because of its environmental friendliness and easy availability of materials.ObjectiveTo explore the effects of soil types and root exudates on the removal of cadmium and petroleum hydrocarbon in soils.MethodA pot experiments with three soil types (sandy, loamy and clayey) of the Changning-Weiyuan area of Sichuan province and three root exudates (citric acid, glycine, and maltose) were carried out using Sorghum sudanense (Piper) Stapf., Lolium perenne L., and Festuca arundinacea L. as test materials. Plants were grown in soils contaminated by cadmium and petroleum at different concentrations.ResultThe biomass of S. sudanense, the translocation ratio and removal rate of cadmium in S. sudanense decreased gradually with increasing soil cadmium concentration. The promotion effects of the three root exudates on S. sudanense were in the following order: citric acid > glycine > maltose. At the same cadmium pollution conditions, the biomass levels of S. sudanense in sandy, loamy, and clayey soils were in the following order: clayey soil > loamy soil > sandy soil. On the contrary, the concentration, translocation ratio, and removal rate of cadmium in S. sudanense grown in the different soils treated with root exudates were in the following order: sandy soil > loamy soil > clayey soil. Under the three soil conditions, the fresh weight of F. arundinacea (0.36 ~ 0.68 g) and S. sudanense (0.51 ~ 0.99 g) increased significantly (p < 0.05). The total petroleum hydrocarbons degradation efficiencies of F. arundinacea, L. perenne, and S. sudanense were high in sandy soil (34.27% ~ 60.52%). Changing the type of root exudate had a significant impact on the degradation of total petroleum hydrocarbons in sandy soil (p < 0.05).ConclusionThis study showed that soil types impacted the accumulation of cadmium and petroleum in plants. Phytoremediation of cadmium and petroleum contaminated soil could be enhanced by the application of root exudates. This study recommend that the method is suitable for field remediation of soils contaminated with mild cadmium and petroleum hydrocarbons.
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Yan N, Yuan KY, Mei P, Lai L. Dynamic interfacial activity and dilational viscoelasticity of polyether demulsifiers at the oil/water interface. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119875] [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: 10/17/2022]
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Yang Y, Lu R, Chen W, Mei P, Lai L. Amphiphilic carbon dots as high-efficiency corrosion inhibitor for N80 steel in HCl solution: Performance and mechanism investigation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129457] [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: 11/03/2022]
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Hao Z, Zhang W, Chen W, Mei P, Lai L. Relationship between the molecular structure of different dithiocarbamates and their oil removal performance. Water Sci Technol 2022; 86:467-481. [PMID: 35960831 DOI: 10.2166/wst.2022.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Six kinds of dithiocarbamates (DTCs) were synthesized from three linear amines with different amino numbers, two polyether amines with different molecular weights, and one branched amine with benzene rings, respectively. The conditions affecting oil removal rate and floc rising time of DTC were studied using simulated oily wastewater. Furthermore, the effects of the molecular structure of DTC on oil removal efficiency, floc morphology, floc rising time, and floc adhesion were investigated. When the conditions were optimal, the oil removal efficiency of DTC synthesized from polyethylene polyamine was 95.14%, which was higher than other DTCs. Meanwhile, the ferrous ion was the most suitable chelating metal ion for DTC than other transition metal ions. The increase of amino groups in the initiators improves the oil removal efficiency of DTC, while the linear structural DTC exhibits a low oil removal efficiency due to a lack of network structural flocs. The introduction of polyether structure helps reduce the volume of the flocs and make them compact, but it also increases the adhesion of the floc on the metal surface. The introduction of bisphenol A phenol amino resin structure induces the generation of the flocs in oil wastewater and improves the oil removal efficiency.
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Affiliation(s)
- Ziyang Hao
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China E-mail:
| | - Wenyan Zhang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China E-mail:
| | - Wu Chen
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China E-mail:
| | - Ping Mei
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China E-mail:
| | - Lu Lai
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China E-mail:
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Bao H, Li X, Cao Z, Huang Z, Chen L, Wang M, Hu J, Li W, Sun H, Jiang X, Mei P, Li H, Lu L, Zhan M. Identification of COPA as a potential prognostic biomarker and pharmacological intervention target of cervical cancer by quantitative proteomics and experimental verification. J Transl Med 2022; 20:18. [PMID: 34991628 PMCID: PMC8740354 DOI: 10.1186/s12967-021-03218-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/23/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cervical cancer is the most fatal gynecological carcinoma in the world. It is urgent to explore novel prognostic biomarkers and intervention targets for cervical cancer. METHODS Through integrated quantitative proteomic strategy, we investigated the protein expression profiles of cervical cancer; 28 fresh frozen tissue samples (11 adenocarcinoma (AC), 12 squamous cell carcinoma (SCC) and 5 normal cervixes (HC)) were included in discover cohort; 45 fresh frozen tissue samples (19 AC, 18 SCC and 8 HC) were included in verification cohort; 140 paraffin-embedded tissues samples of cervical cancer (85 AC and 55 SCC) were used for immunohistochemical evaluation (IHC) of coatomer protein subunit alpha (COPA) as a prognostic biomarker for cervical cancer; how deficiency of COPA affects cell viability and tumorigenic ability of cervical cancer cells (SiHa cells and HeLa cells) were evaluated by cell counting kit-8 and clone formation in vitro. RESULTS We identified COPA is a potential prognostic biomarker for cervical cancer in quantitative proteomics analysis. By retrospective IHC analysis, we additionally verified the proteomics results and demonstrated moderate or strong IHC staining for COPA is an unfavourable independent prognostic factor for cervical cancer. We also identified COPA is a potential pharmacological intervention target of cervical cancer by a series of in vitro experiments. CONCLUSION This study is the first to demonstrate that COPA may contribute to progression of cervical cancer. It can serve as a potential prognostic biomarker and promising intervention target for cervical cancer.
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Affiliation(s)
- Huiqiong Bao
- The Second School of Clinical Medicine, Southern Medical University, Department of Gynaecology, Guangzhou, China.,Department of Gynaecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiaobin Li
- Zhuhai Precision Medical Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China
| | - Zhixing Cao
- Department of Pathology, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China
| | - Zhihong Huang
- Department of Gynaecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Li Chen
- Zhuhai Center for Maternal and Child Health Care, Zhuhai Women and Childen's Hospital, Zhuhai, China
| | - Mingbing Wang
- The Second School of Clinical Medicine, Southern Medical University, Department of Gynaecology, Guangzhou, China.,Department of Gynaecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jiali Hu
- Zhuhai Precision Medical Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China
| | - Wenting Li
- Zhuhai Precision Medical Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China
| | - Hongwei Sun
- Zhuhai Precision Medical Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China
| | - Xue Jiang
- Department of Gynecology, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China
| | - Ping Mei
- Department of Gynaecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Huawen Li
- Department of Gynecology, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China.
| | - Ligong Lu
- The Second School of Clinical Medicine, Southern Medical University, Department of Gynaecology, Guangzhou, China. .,Zhuhai Precision Medical Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China. .,Center of Intervention Radiology, Zhuhai Precision Medicine Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China.
| | - Meixiao Zhan
- Zhuhai Precision Medical Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated With Jinan University), Zhuhai, China. .,Center of Intervention Radiology, Zhuhai Precision Medicine Center, Zhuhai People's Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China.
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Feng XJ, Tang YJ, Yang Y, Wang G, Mei P, Lai L. Relationship between the dynamic interfacial activity and demulsification performance of hyperbranched poly(amido amine) polyethers. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127869] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Wei B, Mei P, Huang S, Yu X, Zhi T, Wang G, Xu X, Xiao L, Dong X, Cui W. Evaluation of the SureX HPV genotyping test for the detection of high-risk HPV in cervical cancer screening. Virol J 2020; 17:171. [PMID: 33168022 PMCID: PMC7650185 DOI: 10.1186/s12985-020-01417-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/22/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The SureX HPV genotyping test (SureX HPV test), which targets the human papillomavirus (HPV) E6/E7 genes was compared with the Cobas 4800 and Venus HPV tests for detecting 14 high-risk HPV (HR-HPV) types in clinical referral and follow-up patients to evaluate its value for cervical cancer screening. METHODS Two different populations were enrolled in the study. The first population comprised 185 cases and was used for comparing the SureX HPV test (Health, China) with the Cobas 4800 test (Roche, USA). The second population comprised 290 cases and was used for comparing the SureX HPV test (Health, China) with the Venus HPV test (Zhijiang, China). Polymerase chain reaction (PCR) sequencing was performed for further confirmation of discordant results. RESULTS In the first population, the overall agreement rate was 95.6% for 14 high-risk HPV types. Eight discordant cases were confirmed by PCR sequencing, which showed that the agreement rates were 75.0% between the SureX HPV test and PCR sequencing and 25.0% between the Cobas 4800 test and PCR sequencing (P < 0.01). In the second population, the overall agreement rate was 95.5%. Thirteen discordant cases were confirmed by PCR sequencing, which showed that the agreement rates were 76.9% between the SureX HPV test and PCR sequencing and 23.1% between the Venus HPV test and PCR sequencing (P < 0.01). With cervical intraepithelial neoplasia grade 2+ (CIN2+) as the reference standard, the sensitivity values of the SureX HPV test and the Venus HPV test were 93.5% and 92.0%, (P > 0.05), while the specificity values were 43.3% and 46.7%, respectively (P > 0.05). CONCLUSION The SureX HPV test had good consistency with both the Cobas 4800 and Venus HPV tests for 14 HR-HPV types. In addition, it avoided some false negatives and false positives. Therefore, the SureX HPV test can be used for cervical cancer screening.
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Affiliation(s)
- Baojun Wei
- Department of Clinical Laboratory, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Beijing, 100021, People's Republic of China
| | - Ping Mei
- Department of Pathology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - Shengkai Huang
- Department of Clinical Laboratory, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Beijing, 100021, People's Republic of China
| | - Xueting Yu
- Department of Clinical Laboratory, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Beijing, 100021, People's Republic of China
| | - Tong Zhi
- Department of Clinical Laboratory, Beijing Fengtai Youanmen Hospital, Beijing, People's Republic of China
| | - Guojing Wang
- Department of Clinical Laboratory, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Beijing, 100021, People's Republic of China
| | - Xiaotian Xu
- Department of Clinical Laboratory, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Beijing, 100021, People's Republic of China
| | - Lin Xiao
- Department of Clinical Laboratory, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Beijing, 100021, People's Republic of China
| | - Xin Dong
- Department of Clinical Laboratory, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Beijing, 100021, People's Republic of China
| | - Wei Cui
- Department of Clinical Laboratory, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 17 Panjiayuannanli, Beijing, 100021, People's Republic of China.
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Sinclair W, Kobalka P, Ren R, Beshai B, Lott Limbach AA, Wei L, Mei P, Li Z. Interobserver agreement in programmed cell death-ligand 1 immunohistochemistry scoring in nonsmall cell lung carcinoma cytologic specimens. Diagn Cytopathol 2020; 49:219-225. [PMID: 33104298 DOI: 10.1002/dc.24651] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/28/2020] [Accepted: 10/14/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND The evaluation of PD-L1 expression in nonsmall cell lung carcinoma (NSCLC) is becoming increasingly important given the effectiveness of PD-L1 inhibitors. Although cytologic specimens have been shown to be compatible with surgical specimens to evaluate PD-L1 immunohistochemistry (IHC), evidence of the reproducibility of PD-L1 in cytologic specimens is lacking. The aim of this study is to evaluate interobserver agreement in PD-L1 IHC in cytologic specimens. METHODS PD-L1 IHC was performed on 86 NSCLC cytology specimens using Dako PD-L1 IHC 22C3 pharmDx. The digitally scanned whole slide images (WSI) were read by five pathologists. Each case was given a Tumor Proportion Score (TPS) and the results were compared between the observers. The interobserver concordance was assessed using 1% and 50% as cutoffs. RESULTS TPSs were highly correlated among observers (Spearman correlation coefficient, 0.86-0.94). Using greater than 1% as a cutoff, interobserver agreement measured by Fleiss Kappa was 0.74 for all pathologists and Cohen's Kappa coefficient ranged from 0.49 to 0.83, consistent with moderate to substantial agreement. With a cutoff of greater than 50%, Fleiss Kappa was 0.79 for all pathologists and the kappa values ranged from 0.63 to 0.90, consistent with substantial to almost perfect agreement. Several pitfalls were identified by reviewing discordant cases, including staining in macrophages, stromal cells, and intratumoral heterogeneity. CONCLUSION Our data suggest that TPS of PD-L1 IHC on cytology specimens is reproducible, with a better agreement when using 50% as the cutoff value. However, special attention is required when the TPS is near the 1% cutoff.
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Affiliation(s)
- William Sinclair
- Department of Pathology, Wexner Medical Center at The Ohio State University, Columbus, Ohio, USA
| | - Peter Kobalka
- Department of Pathology, Wexner Medical Center at The Ohio State University, Columbus, Ohio, USA
| | - Rongqin Ren
- Department of Pathology, Wexner Medical Center at The Ohio State University, Columbus, Ohio, USA
| | - Boulos Beshai
- Department of Pathology and Laboratory Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Abberly A Lott Limbach
- Department of Pathology, Wexner Medical Center at The Ohio State University, Columbus, Ohio, USA
| | - Lai Wei
- Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Ping Mei
- Department of Pathology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zaibo Li
- Department of Pathology, Wexner Medical Center at The Ohio State University, Columbus, Ohio, USA
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Wu LM, Lai L, Mei P, Cheng L, Wang YQ, Liu Y. Aqueous-organic phase transfer of nanoparticles: The effects of molecular structures of cationic surfactants. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Freitag CE, Mei P, Wei L, Parwani AV, Li Z. Genetic alterations and their association with clinicopathologic characteristics in advanced breast carcinomas: focusing on clinically actionable genetic alterations. Hum Pathol 2020; 102:94-103. [PMID: 32445652 DOI: 10.1016/j.humpath.2020.05.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/17/2020] [Accepted: 05/13/2020] [Indexed: 02/07/2023]
Abstract
Breast carcinomas (BCs) are genetically heterogeneous and associated with numerous mutations which can be used to predict outcomes and initiate targeted therapies. We investigated clinicopathologic characteristics associated with gene mutations detected using the FoundationOne CDx assay in a cohort of 223 clinically advanced BCs (66 locally recurrent and 157 metastatic) from our institution. One hundred fifty unique mutations were identified (total 1008) in the cohort, with the most prevalent (>10%) including TP53 (53.8%), PIK3CA (35%), MYC (22%), CCND1 (19.7%), FGF19 (19.7%), FGF4 (16.6%), FGF3 (16.1%), ZNF703 (14.8%), ESR1 (13.9%), FGFR1 (13.5%), PTEN (12.1%), and CDH1 (10.8%). ERBB2 genetic alteration was most common in human epidermal growth factor receptor 2 (HER2)-positive BCs, and GATA3 and ESR1 mutations were only identified in hormone receptor-positive BC. Mutations enriched in triple-negative BCs (TNBCs) included TP53, PTEN, RB1, and CDKN2A/B. CDH1 mutation was predominantly found in lobular carcinomas, and PIK3CA mutation was also enriched. Mutations enriched in metaplastic carcinomas with heterologous mesenchymal differentiation included TP53, PTEN, MCL1, CDKN2A/B, and NOTCH2. An increase in mutations of CCND1, FGF19, FGF4, FGF3, ESR1, and EMSY was identified in metastatic BCs compared with locally recurrent BCs. Overall, PIK3CA was the most frequent clinically actionable genetic alteration (35%), followed by MYC (22%), CCND1 (19.7%), and FGF3/FGF4/FGFR1 (16%). In conclusion, our study provides genetic insight into the biology of advanced BCs and summarizes their most frequent clinically actionable genetic alterations, generating useful genomic information for potential improvement of patient management.
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Affiliation(s)
- Cody Eric Freitag
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Ping Mei
- Department of Pathology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Lai Wei
- Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University, Columbus, OH, 43210, USA
| | - Anil V Parwani
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA
| | - Zaibo Li
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA.
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Mei P, Freitag CE, Wei L, Zhang Y, Parwani AV, Li Z. High tumor mutation burden is associated with DNA damage repair gene mutation in breast carcinomas. Diagn Pathol 2020; 15:50. [PMID: 32393302 PMCID: PMC7212599 DOI: 10.1186/s13000-020-00971-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 05/05/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Immunotherapy has demonstrated encouraging clinical benefits in patients with advanced breast carcinomas and Programmed death ligand 1 (PD-L1) expression has been proposed as an immunotherapy biomarker. Challenges with current PD-L1 testing exist and tumor mutation burden (TMB) is emerging as a biomarker to predict clinical response to immunotherapy in melanoma and non-small cell lung cancer patients. However, TMB has not been well characterized in breast carcinomas. METHODS The study cohort included 62 advanced breast cancer patients (13 primary and 49 metastatic). Genetic alterations and TMB were determined by FoundationOne CDx next generation sequencing (NGS) and the association with clinicopathologic features was analyzed. RESULTS High TMB was observed in a relatively low frequency (3/62, 4.8%). TMB levels were positively associated tumor infiltrating lymphocytes and significantly higher TMB was observed in breast carcinomas with DNA damage repair gene mutation(s). There was no significant association between TMB levels and other analyzed clinicopathologic characteristics. CONCLUSIONS Our data indicate the importance of DNA damage repair proteins in maintaining DNA integrity and immune reaction and breast carcinoma patients with DDR mutation may benefit from immunotherapy.
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Affiliation(s)
- Ping Mei
- Department of Pathology, Guangdong Provincial People's Hospital, Guangzhou, China
| | - C Eric Freitag
- Department of Pathology, Mayo Clinic, Rochester, MN, USA
| | - Lai Wei
- Department of Biomedical Informatics, Center for Biostatistics, The Ohio State University, Columbus, OH, USA
| | | | - Anil V Parwani
- Department of Pathology, The Ohio State University Wexner Medical Center, 410 W. 10th Ave, Columbus, 43210, OH, USA
| | - Zaibo Li
- Department of Pathology, The Ohio State University Wexner Medical Center, 410 W. 10th Ave, Columbus, 43210, OH, USA.
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Chen C, Li Z, Li S, Deng N, Mei P. Effects of root exudates on the activation and remediation of cadmium ion in contaminated soils. Environ Sci Pollut Res Int 2020; 27:2926-2934. [PMID: 31838688 DOI: 10.1007/s11356-019-07263-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
To screen out plants with hyperaccumulation of heavy metals and explore the effects of root exudates on the phytoremediation in contaminated soils. The germination rates of five plants including Lolium perenne L. (L. perenne), Sorghum sudanense (Piper) Stapf. (S. sudanense), Pennisetum alopecuroides (L.) Spreng. (P. alopecuroides), Medicago sativa L. (M. sativa), and Trifolium repens L. (T. repens) in different concentrations of cadmium ion solution (0-100 mg/kg) were determined. The growth adaptability of these five plants under conditions of contaminated soils with the above cadmium ion concentrations was also evaluated. S. sudanense and P. alopecuroides had higher germination rates and better growth than the three other plants and were selected as the latter experimental varieties. The activation amounts of cadmium ion in soils were measured using AAS in the presence of three types of root secretions (citric acid, glycine, and maltose) with different concentrations (10-500 mmol/L). The activation amounts decrease in the following order: citric acid > glycine > maltose. The effect of these three root exudates on the removal of cadmium-contaminated soils in combination with S. sudanense and P. alopecuroides was also tested. For S. sudanense and P. alopecuroides, the maximum biomass and removal rate reaches the maximum at 100 mmol/L of citric acid. Conversely, low concentrations (approximately 10-50 mmol/L) of glycine and maltose are more effective for plant growth and phytoremediation. The addition of citric acid at 100 mmol/L and approximately 10-50 mmol/L of glycine and maltose can effectively promote the transfer of cadmium ion from roots to leaves and the accumulation of cadmium ion in leaves.
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Affiliation(s)
- Cheng Chen
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Zhongbao Li
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Shengjin Li
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Nanxin Deng
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Ping Mei
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China.
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15
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Wu LM, Lai L, Lu Q, Mei P, Wang YQ, Cheng L, Liu Y. Comparative studies on the surface/interface properties and aggregation behavior of mono-rhamnolipid and di-rhamnolipid. Colloids Surf B Biointerfaces 2019; 181:593-601. [DOI: 10.1016/j.colsurfb.2019.06.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 05/12/2019] [Accepted: 06/06/2019] [Indexed: 11/26/2022]
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16
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Wu J, Mei P, Chen W, Li Z, Tian Q, Mei Q. Surface Properties and Solubility Enhancement of Anionic/Nonionic Surfactant Mixtures Based on Sulfonate Gemini Surfactants. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12335] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Juan Wu
- College of Chemistry and Environmental EngineeringYangtze University Jingzhou 434023 P. R. China
| | - Ping Mei
- College of Chemistry and Environmental EngineeringYangtze University Jingzhou 434023 P. R. China
- Hubei Cooperative Innovation Center of Unconventional Oil and Gas Wuhan 430100 P. R. China
| | - Wu Chen
- College of Chemistry and Environmental EngineeringYangtze University Jingzhou 434023 P. R. China
| | - Zhong‐Bao Li
- College of Chemistry and Environmental EngineeringYangtze University Jingzhou 434023 P. R. China
| | - Qing Tian
- College of Chemistry and Environmental EngineeringYangtze University Jingzhou 434023 P. R. China
| | - Qi‐Xiang Mei
- College of Chemistry and Environmental EngineeringYangtze University Jingzhou 434023 P. R. China
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Tian Q, Lai L, Zhou Z, Mei P, Lu Q, Wang Y, Xiang D, Liu Y. Interaction Mechanism of Different Surfactants with Casein: A Perspective on Bulk and Interfacial Phase Behavior. J Agric Food Chem 2019; 67:6336-6349. [PMID: 31117492 DOI: 10.1021/acs.jafc.9b00969] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Understanding the interaction mechanism between proteins and surfactants is conducive to the application of protein/surfactant mixtures in the food industry. The present study investigated the interaction mechanism of casein with cationic Gemini surfactant (BQAS), anionic Gemini surfactant (SGS), anionic single-chain surfactant (sodium dodecyl sulfate [SDS]), and two biosurfactants (rhamnolipid [RL] and lactone sophorolipid [SL]) at the interface and in bulk phase. BQAS/casein and SDS/casein mixtures exhibit a strong synergistic effect on the surface activity. For SGS, RL, and SL, the formation of surfactant/casein complexes caused no improvement in surface activity. Dilational elasticity results indicate the displacement of casein by SGS, RL, and SL at the surface. However, the BQAS/casein complexes manifested varying dilational properties from pure casein surface. The strong electrostatic interaction between BQAS and casein produced large-size precipitate particles. For other surfactants, no precipitate particles formed. Determination of ζ-potential, UV-vis absorption spectra, and fluorescence spectra demonstrated the stronger interaction of BQAS and SDS with casein than that of SGS, RL, and SL. Addition of BQAS initially increased and then decreased the α-helix structure of casein. For SGS, RL, and SL, no noticeable change occurred in the casein structure. However, the formation of SDS/casein complexes was conducive to the casein structure. In conclusion, the interaction between BQAS and casein is similar to that of cationic single-chain surfactant. Furthermore, SGS exhibits a significantly different interaction mechanism from the corresponding monomer (SDS), possibly resulting from its excellent interfacial activity, low critical micelle concentration values, and strong self-assembly capability. For RL and SL, the weak interaction is attributed to the relatively complicated structure and less charged degree of hydrophilic headgroups.
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Affiliation(s)
- Qing Tian
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P. R. China
| | - Lu Lai
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P. R. China
- Department of Chemical and Petroleum Engineering , University of Calgary , Calgary T2N 1N4 , Canada
| | - Zhiqiang Zhou
- College of Chemistry and Material Sciences , Guangxi Teachers Education University , Nanning 530001 , P. R. China
| | - Ping Mei
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P. R. China
| | - Qingye Lu
- Department of Chemical and Petroleum Engineering , University of Calgary , Calgary T2N 1N4 , Canada
| | - Yanqun Wang
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P. R. China
| | - Dong Xiang
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P. R. China
| | - Yi Liu
- College of Chemistry and Material Sciences , Guangxi Teachers Education University , Nanning 530001 , P. R. China
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (MOE), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China
- Key Laboratory of Coal Conversion and Carbon Materials of Hubei Province, College of Chemistry and Chemical Engineering , Wuhan University of Science and Technology , Wuhan 430081 , P. R. China
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Chen M, Jiang Y, Mei P, Zhang Y, Zheng X, Xiao W, You Q, Yan X, Tang H. Polyacrylamide Microspheres-Derived Fe 3C@N-doped Carbon Nanospheres as Efficient Catalyst for Oxygen Reduction Reaction. Polymers (Basel) 2019; 11:E767. [PMID: 31052409 PMCID: PMC6572022 DOI: 10.3390/polym11050767] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/16/2019] [Accepted: 04/19/2019] [Indexed: 11/16/2022] Open
Abstract
High-performance non-precious metal catalysts exhibit high electrocatalytic activity for the oxygen-reduction reaction (ORR), which is indispensable for facilitating the development of multifarious renewable energy systems. In this work; N-doped carbon-encapsulated Fe3C nanosphere ORR catalysts were prepared through simple carbonization of iron precursors loaded with polyacrylamide microspheres. The effect of iron precursors loading on the electrocatalytic activity for ORR was investigated in detail. The electrochemical measurements revealed that the N-doped carbon-encapsulated Fe3C nanospheres exhibited outstanding electrocatalytic activity for ORR in alkaline solutions. The optimized catalyst possessed more positive onset potential (0.94 V vs. reversible hydrogen electrode (RHE)), higher diffusion limiting current (5.78 mA cm-2), better selectivity (the transferred electron number n > 3.98 at 0.19 V vs. RHE) and higher durability towards ORR than a commercial Pt/C catalyst. The efficient electrocatalytic performance towards ORR can be attributed to the synergistic effect between N-doped carbon and Fe3C as catalytic active sites; and the excellent stability results from the core-shell structure of the catalysts.
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Affiliation(s)
- Ming Chen
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China.
| | - Yu Jiang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China.
| | - Ping Mei
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China.
| | - Yan Zhang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China.
| | - Xianfeng Zheng
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China.
| | - Wei Xiao
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China.
| | - Qinliang You
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China.
| | - Xuemin Yan
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China.
| | - Haolin Tang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China.
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Mei P, Shilo K, Wei L, Shen R, Tonkovich D, Li Z. Programmed cell death ligand 1 expression in cytologic and surgical non-small cell lung carcinoma specimens from a single institution: Association with clinicopathologic features and molecular alterations. Cancer Cytopathol 2019; 127:447-457. [PMID: 31025831 DOI: 10.1002/cncy.22140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 12/28/2018] [Revised: 04/11/2019] [Accepted: 04/11/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND Programmed cell death ligand 1 (PD-L1) expression by the 22C3 pharmDx companion assay has been validated in surgical specimens to support pembrolizumab treatment decisions for patients with non-small cell lung carcinoma (NSCLC). The aims of this study were 1) to assess the adequacy of cytologic specimens for PD-L1 evaluation and 2) to explore correlations of PD-L1 expression with clinicopathologic and molecular features. METHODS The study cohort included 100 cytology specimens (fluid [n = 28] and fine-needle aspiration [n = 72]) and 165 surgical specimens (biopsy [n = 138] and resection [n = 27]). The PD-L1 immunohistochemistry 22C3 assay and staining assessment were performed according to the manufacturer's instructions. PD-L1 expression was correlated with patients' demographics, pathologic characteristics, and molecular alterations. RESULTS One hundred forty-two specimens (53.6%) were positive for PD-L1 expression (≥1%). No statistically significant difference in PD-L1 expression was identified between cytologic (56.0%) and surgical specimens (52.1%). Seventy-four of 190 tested cases (38.9%) had genetic alterations. PD-L1 positivity was significantly more prevalent in cases with genetic alterations than in cases without genetic alterations. Furthermore, both PD-L1 positivity and high PD-L1 expression (≥50%) had statistically significant associations with Kirsten rat sarcoma viral oncogene homolog (KRAS) mutations. PD-L1 expression had no significant association with histologic phenotypes or other clinicopathologic features. CONCLUSIONS The data indicate that cytologic specimens are comparable to surgical specimens for PD-L1 evaluation. The association of PD-L1 expression with KRAS mutations may have clinical relevance in selecting patients with NSCLC for immunotherapy.
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Affiliation(s)
- Ping Mei
- Department of Pathology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Science, Guangzhou, China.,Department of Pathology, Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Konstantin Shilo
- Department of Pathology, Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Lai Wei
- Center for Biostatistics, Department of Biomedical Informatics, Ohio State University, Columbus, Ohio
| | - Rulong Shen
- Department of Pathology, Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Dena Tonkovich
- Department of Pathology, Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Zaibo Li
- Department of Pathology, Ohio State University Wexner Medical Center, Columbus, Ohio
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20
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Xiao W, Wang Z, Miao C, Mei P, Zhang Y, Yan X, Tian M, Jiang Y, Liu J. High Performance Composite Polymer Electrolytes Doped With Spherical-Like and Honeycomb Structural Li 0.1Ca 0.9TiO 3 Particles. Front Chem 2018; 6:525. [PMID: 30410878 PMCID: PMC6209821 DOI: 10.3389/fchem.2018.00525] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 08/26/2018] [Accepted: 10/11/2018] [Indexed: 11/13/2022] Open
Abstract
The spherical-like and honeycomb structural Li0.1Ca0.9TiO3 particles are prepared by spray drying combined with following calcination confirmed by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive X-ray spectrometer (EDS). The poly (vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP))-based composite polymer electrolytes (CPEs) modified with the particles are fabricated by phase inversion and activation processes. The characterization results show that the as-prepared CPE membranes possess the smoothest surface and most abundant micropores with the lowest crystallinity with adding the particles into the polymer matrix, which results in high ionic conductivity (3.947 mS cm-1) and lithium ion transference number (0.4962) at ambient temperature. The interfacial resistance can be quickly stabilized at 508 Ω after 5 days storage and the electrochemical working window is up to 5.2 V. Moreover, the mechanical strength of the membranes gains significant improvement without lowering the ionic conductivity. Furthermore, the assembled coin cell can also deliver high discharge specific capacity and preserve steady cycle performance at different current densities. Those outstanding properties may be ascribed to the distinctive structure of the tailored spherical-like and honeycomb structural Li0.1Ca0.9TiO3 particles, which can guarantee the desirable CPEs as a new promising candidate for the polymer electrolyte.
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Affiliation(s)
- Wei Xiao
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Zhiyan Wang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Chang Miao
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Ping Mei
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Yan Zhang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Xuemin Yan
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Minglei Tian
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Yu Jiang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Jingjing Liu
- Environmental Monitoring Department, Changsha Environmental Protection College, Changsha, China
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Li Y, Lai L, Mei P, Li SJ, Cheng L, Ren ZH, Zheng YC, Liu Y. Equilibrium and Dynamic Surface Properties of Cationic/Anionic Surfactant Mixtures Based on Carboxylate Gemini Surfactant. J SURFACTANTS DETERG 2018. [DOI: 10.1002/jsde.12179] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Yan Li
- Department of Chemistry, College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 China
| | - Lu Lai
- Department of Chemistry, College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 China
- Hubei Cooperative Innovation Center of Unconventional Oil and Gas; Wuhan 430100 China
| | - Ping Mei
- Department of Chemistry, College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 China
- Hubei Cooperative Innovation Center of Unconventional Oil and Gas; Wuhan 430100 China
| | - Sheng-Jin Li
- Department of Chemistry, College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 China
| | - Li Cheng
- Department of Oilfield Chemistry, College of Petroleum Engineering; Yangtze University; Wuhan 430100 China
| | - Zhao-Hua Ren
- Department of Chemistry, College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 China
| | - Yan-Cheng Zheng
- Department of Chemistry, College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 China
| | - Yi Liu
- Institute of Physical Chemistry, State Key Laboratory of Virology and Key Laboratory of Analytical Chemistry for Biology and Medicine, College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
- Department of Chemistry, College of Chemistry and Chemical Engineering; Wuhan University of Science and Technology; Wuhan 430081 China
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Ding Y, Wang C, Li X, Jiang Y, Mei P, Huang W, Song G, Wang J, Ping G, Hu R, Miao C, He X, Chen G, Li H, Zhu Y, Zhang Z. Novel clinicopathological and molecular characterization of metanephric adenoma: a study of 28 cases. Diagn Pathol 2018; 13:54. [PMID: 30111351 PMCID: PMC6094885 DOI: 10.1186/s13000-018-0732-x] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 07/30/2018] [Indexed: 12/22/2022] Open
Abstract
Background Metanephric adenoma is a rare, benign renal neoplasm with occasional misdiagnosis. However, its molecular characterization is not fully understood. Methods In this study, we use the hybrid capture-based Next-Generation Sequencing to sequence a panel of 295 well-established oncogene or tumor suppressor genes in 28 cases of MA patients in China. Novel clinicopathological markers associated with the mitogen-activated protein kinase (MAPK) pathway in metanephric adenoma were detected by immunohistochemistry. Results It was found that except for BRAF (22/28) mutations (c.1799 T > A, p.V600E), NF1 (6/28), NOTCH1 (5/28), SPEN (5/28), AKT2 (4/28), APC (4/28), ATRX (3/28), and ETV4 (3/28) mutations could also be detected. Meanwhile, a novel and rare gene fusion of STARD9-BRAF, CUX1-BRAF, and LOC100507389-BRAF was detected in one MA patient. In addition, although MEK phosphorylation was normally activated, the phosphorylation level of ERK was low in metanephric adenoma cases. Highly expressed p16 and DUSP6 may have contributed to these results, which maintained MA as a benign renal tumor. Conclusions This study provides novel molecular and pathological markers for metanephric adenoma, which could improve its diagnosis and increase the understanding of its pathologic mechanism. Electronic supplementary material The online version of this article (10.1186/s13000-018-0732-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ying Ding
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Cong Wang
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Xuejie Li
- Department of Pathology, The First Affiliated Hospital, School of Medicine, Zhejiang Unversity, Hangzhou, 310003, China
| | - Yangyang Jiang
- Department of Pathology, Shenzhen People's Hospital, Shenzhen, 518020, China
| | - Ping Mei
- Department of Pathology, Guangdong General Hospital/Guangdong Academy of Medical Sciences, Guangzhou, 510000, China
| | - Wenbin Huang
- Department of Pathology, Nanjing First Hospital, Nanjing, 210000, China
| | - Guoxin Song
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Jinsong Wang
- Department of Pathology, Nanjing First Hospital, Nanjing, 210000, China
| | - Guoqiang Ping
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Ran Hu
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Chen Miao
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Xiao He
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Gang Chen
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Hai Li
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Yan Zhu
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Zhihong Zhang
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
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Wu HM, Liu C, Liu XH, Yao J, Liao JQ, Chen Y, Mei P, Huang LY, Liu YH. [Clinicopathologic features of myxoid adrenocortical adenomas]. Zhonghua Bing Li Xue Za Zhi 2018; 47:527-530. [PMID: 29996318 DOI: 10.3760/cma.j.issn.0529-5807.2018.07.009] [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 study the clinicopathologic characteristics, immunophenotype, pathologic diagnosis and differential diagnosis of myxoid adrenocortical adenomas. Methods: The clinical data, histological features and immunohistochemical results of 4 cases of myxoid adrenocortical adenomas were analyzed, which were collected from January 2014 to December 2016 at Guangdong General Hospital, with review of literature. Results: Four cases of myxoid adrenocortical adenomas were presented. The patients ages ranged from 26 to 45 years (mean =35 years). Microscopically, it showed a typical morphology, characterized by small-sized tumor cell cords or pseudo-glands embedded in an abundant extracellular myxoid matrix. Immunohistochemical staining showed tumor cells were strongly positive for Melan A, vimentin and focally for α-inhibin, one case showed strong and diffuse positivity for CAM5.2, and two cases showed diffuse positivity for synaptophysin, while negative for CgA, S-100 protein, epithelial antigen, CK7, CK20 and CKpan. Conclusions: Myxoid adrenocortical adenomas are extremely rare, which may cause confusion with metastatic well-differentiated neuroendocrine tumours, sex cord-stromal tumoursor metanephric adenoma. Recognition of this entity would be beneficial for pathologists to avoid misdiagnosis, and unnecessary treatment.
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Affiliation(s)
- H M Wu
- Department of Pathology, Guangdong General Hospital; Guangdong Academy of Medical Sciences, Guangzhou 510080, China
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Wang Z, Miao C, Xiao W, Zhang Y, Mei P, Yan X, Jiang Y, Tian M. Effect of different contents of organic-inorganic hybrid particles poly(methyl methacrylate) ZrO 2 on the properties of poly(vinylidene fluoride-hexafluoroprolene)-based composite gel polymer electrolytes. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Li SJ, Lai L, Mei P, Li Y, Cheng L, Ren ZH, Liu Y. Equilibrium and dynamic surface properties of cationic/anionic surfactant mixtures based on bisquaternary ammonium salt. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.057] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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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Lai L, Wei XQ, Huang WH, Mei P, Ren ZH, Liu Y. Impact of carbon quantum dots on dynamic properties of BSA and BSA/DPPC adsorption layers. J Colloid Interface Sci 2017; 506:245-254. [DOI: 10.1016/j.jcis.2017.07.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/09/2017] [Accepted: 07/15/2017] [Indexed: 10/19/2022]
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Mei QX, Lai L, Zhou ZQ, Mei P, Ren ZH, Zheng YC, Liu Y. Impact of multiple quaternary ammonium salts on dynamic properties of BSA adsorption layer at different pH values. Soft Matter 2017; 13:7273-7282. [PMID: 28990032 DOI: 10.1039/c7sm01607g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The interaction mechanism of multiple quaternary ammonium salts (MQAS) with bovine serum albumin (BSA) was examined by the fluorescence quenching method and circular dichroism (CD) spectra. Moreover, the effects of MQAS on the dynamic properties of BSA adsorption layers at different pH values were investigated using dilational interfacial rheology. Results show that the quenching constants increase with an increase in pH values and decrease with an increase in the experiment temperature at pH 5.3. The quenching mechanism is static quenching, and the electrostatic force dominates the interaction between MQAS and BSA at pH 5.3. Due to three positive head groups, MQAS can significantly affect the dynamic interfacial activity of BSA molecules at a relatively low concentration. At pH 4.3, the electrostatic repulsion is unfavorable for the formation of MQAS/BSA complexes. Consequently, MQAS molecules will replace BSA molecules from the interface by competitive adsorption. At the pH value above the isoelectric point of BSA, the electrostatic attraction is better for the formation of MQAS/BSA complexes, which exhibit a rapid adsorption rate and an enhanced interfacial activity. Moreover, the kinetic dependencies of interfacial dilational elasticity for the MQAS/BSA mixtures become nonmonotonous. The appearance of the maximum interfacial elasticity values can be attributed to the formation of tails and loops, which suggests that the addition of MQAS destroys the secondary and tertiary structure of protein in the bulk phase. In addition, the effects of MQAS on the secondary structure of protein were demonstrated by CD spectra.
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Affiliation(s)
- Qi-Xiang Mei
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, P. R. China.
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Lai L, Li SJ, Feng J, Mei P, Ren ZH, Chang YL, Liu Y. Effects of Surface Charges on the Bactericide Activity of CdTe/ZnS Quantum Dots: A Cell Membrane Disruption Perspective. Langmuir 2017; 33:2378-2386. [PMID: 28178781 DOI: 10.1021/acs.langmuir.7b00173] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The inhibitory effects of CdTe/ZnS quantum dots (QDs) modified with 3-mercaptopropionic acid (negatively charged) or cysteamine (positively charged) on the metabolic activity of Escherichia coli were investigated using biological microcalorimetry. Results show that the inhibitory ratio of positive QDs is higher than that of negative QDs. Transmission electron microscopy images indicate that QDs are prone to be adsorbed on the surface of E. coli. This condition disturbs the membrane structure and function of E. coli. Fluorescence anisotropy results demonstrate that positive QDs show a significant increase in the membrane fluidity of E. coli and dipalmitoylphosphatidylcholine (DPPC) model membrane. Furthermore, fluorescence anisotropy values of DPPC membrane in the gel phase decreased upon the addition of positive QDs. By contrast, anisotropy values in the liquid-crystalline phase are almost constant. The change in membrane fluidity is associated with the increased permeability of the membrane. Finally, the kinetics of dye leakage from liposomes demonstrate that the surface charge of QDs is crucial to the interaction between QDs and membrane.
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Affiliation(s)
- Lu Lai
- College of Chemistry and Environmental Engineering, Yangtze University , Jingzhou, Hubei 434023, P. R. China
| | - Sheng-Jin Li
- College of Chemistry and Environmental Engineering, Yangtze University , Jingzhou, Hubei 434023, P. R. China
| | - Jing Feng
- College of Chemistry and Environmental Engineering, Yangtze University , Jingzhou, Hubei 434023, P. R. China
| | - Ping Mei
- College of Chemistry and Environmental Engineering, Yangtze University , Jingzhou, Hubei 434023, P. R. China
| | - Zhao-Hua Ren
- College of Chemistry and Environmental Engineering, Yangtze University , Jingzhou, Hubei 434023, P. R. China
| | - Yan-Ling Chang
- College of Chemistry and Environmental Engineering, Yangtze University , Jingzhou, Hubei 434023, P. R. China
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University , Wuhan 430072, P. R. China
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Wang Z, Miao C, Yan X, Mei P, Xiao W. Preparation and performance study on P(St-MMA)-SiO2doped P(VDF-HFP) based composite polymer electrolyte. POLYM INT 2016. [DOI: 10.1002/pi.5292] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhiyan Wang
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
| | - Chang Miao
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
| | - Xuemin Yan
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
| | - Ping Mei
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
| | - Wei Xiao
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
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Xu FP, Liu YH, Luo XL, Zhang F, Zhou HY, Ge Y, Liu C, Chen J, Luo DL, Yan LX, Mei P, Xu J, Zhuang HG. Overexpression of SRC-3 promotes esophageal squamous cell carcinoma aggressiveness by enhancing cell growth and invasiveness. Cancer Med 2016; 5:3500-3511. [PMID: 27781415 PMCID: PMC5224859 DOI: 10.1002/cam4.884] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 08/02/2016] [Accepted: 08/04/2016] [Indexed: 02/06/2023] Open
Abstract
Steroid receptor coactivator‐3 (SRC‐3), a transcriptional coactivator for nuclear receptors and other transcription factors, plays an important role in the genesis and progression of several cancers. However, studies investigated the role of SRC‐3 in esophageal squamous cell carcinomas (ESCCs) are limited, and the role of SRC‐3 in tumor progression remains unclear. We examined the expression of SRC‐3 in 8 ESCC cell lines and 302 human ESCC tissues by qPCR, Western blot, and immunohistochemistry. In addition, ESCC cell lines were subjected to proliferation and invasion assays, tumorigenicity assay, flow cytometry assay, qPCR, Western blot, and Chromatin Immunoprecipitation assay to investigate the role of SRC‐3 in cancer progression. SRC‐3 was overexpressed in 48% of cases and correlated with poor overall (P = 0.0076) and progression‐free (P = 0.0069) survival of surgically resected ESCC patient. Cox regression analysis revealed that SRC‐3 is an independent prognostic marker. Furthermore, we found that activation of insulin‐like growth factor (IGF)/AKT) was involved in the SRC‐3 on the cell growth and invasiveness in two ESCC cell lines, Eca109 and EC18 cells. SRC‐3 overexpression is clinically and functionally relevant to the progression of human ESCC, and might be a useful molecular target for ESCC prognosis and treatment.
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Affiliation(s)
- Fang-Ping Xu
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yan-Hui Liu
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xin-Lan Luo
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Fen Zhang
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Hai-Yu Zhou
- Department of Thoracic Surgery, Cancer Center, Guangdong General Hospital, Guangzhou, China
| | - Yan Ge
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Chao Liu
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jie Chen
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Dong-Lan Luo
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Li-Xu Yan
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Ping Mei
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jie Xu
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Heng-Guo Zhuang
- Department of Pathology and Laboratory Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
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Ren ZH, Huang J, Luo Y, Zheng YC, Mei P, Yu WC, Lai L, Chang YL, Li FX. Effect of isopropanol on the micellization of binary mixtures containing amino sulfonate amphoteric surfactant in aqueous solution: Mixing with octadecyltrimethyl ammonium bromide. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.063] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Lv J, Lv CQ, Wang BL, Mei P, Xu L. Membrane Glycolipids Content Variety in Gastrointestinal Tumors and Transplantable Hepatomas in Mice. Med Sci Monit Basic Res 2016; 22:87-90. [PMID: 27554918 PMCID: PMC5008736 DOI: 10.12659/msmbr.899635] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Background The aim of this study was to investigate the variety of plasma contents of membrane glycolipids in 65 gastrointestinal tumors and 31 transplant hepatomas in mice. Material/Methods The experimental model was a transplantable murine hepatoma. Experimental mice were divided into 3 groups. Results The LSA and TSA content in the 2 groups were significantly difference (p<0.01), and were significantly lower in the therapeutic group than in the control group (p<0.01). Conclusions These results indicate that membrane glycolipids index LSA and TSA are sensitive markers in gastrointestinal tumors. In the transplanted hepatomas in mice, they may be considered as ancillary indicators for judging the therapeutic effect of hepatoma.
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Affiliation(s)
- Jun Lv
- Department of Biochemistry, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Can Qun Lv
- Department of Biochemistry, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Bo-Liang Wang
- Department of Biochemistry, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Ping Mei
- Department of Biochemistry, Wannan Medical College, Wuhu, Anhui, China (mainland)
| | - Lei Xu
- Department of Biochemistry, Wannan Medical College, Wuhu, Anhui, China (mainland)
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Lai L, Li YP, Mei P, Chen W, Jiang FL, Liu Y. Size Effects on the Interaction of QDs with the Mitochondrial Membrane In Vitro. J Membr Biol 2016; 249:757-767. [PMID: 27510720 DOI: 10.1007/s00232-016-9920-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 08/01/2016] [Indexed: 01/18/2023]
Abstract
The mitochondrial toxicity induced by GSH-CdTe Quantum dots (QDs) of different sizes was investigated. The decreases in absorbance and transmission electron microscopy images show that QDs induce the swelling of mitochondria. Results of flow cytometry indicate that QDs cause a reduction of mitochondrial membrane potential (MMP). A remarkable increase in fluidity of protein regions of mitochondrial membrane is observed, whereas the lipid regions are not obviously affected. Cyclosporin A (CsA) effectively prevents the QD-induced mitochondrial swelling. On the basis of these results, it is proposed that QDs induce mitochondrial permeability transition (MPT). Moreover, with increasing QDs size, a pronounced MPT is observed. The difference between the membrane fluidity induced by QDs and Cadmium ion and the ineffective protective effects of EDTA suggests that the mitochondrial toxicity of QDs cannot be only attributed to the release of metal ion. The protective effects of HSA indicate that the interaction of QDs with pore-forming protein gives rise to the increase in membrane fluidity. This hypothesis is demonstrated by the interaction of QDs with model membranes and proteins using differential scanning calorimetry and isothermal titration microcalorimetry. In conclusion, as the size of QDs increases, the binding affinity of QDs with membrane protein increases, and therefore causes a pronounced mitochondrial damage.
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Affiliation(s)
- Lu Lai
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China.
| | - Ya-Ping Li
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Ping Mei
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Wu Chen
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, 434023, People's Republic of China
| | - Feng-Lei Jiang
- State Key Laboratory of Virology and Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Yi Liu
- State Key Laboratory of Virology and Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan, 430072, People's Republic of China.
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Lai L, Sheng SY, Mei P, Liu Y, Guo QL. Hydrothermal synthesis for high-quality glutathione-capped CdxZn1 - xSe and CdxZn1 - xSe/ZnS alloyed quantum dots and its application in Hg(II) sensing. LUMINESCENCE 2016; 32:231-239. [DOI: 10.1002/bio.3174] [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: 03/24/2016] [Revised: 05/20/2016] [Accepted: 05/23/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Lu Lai
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou Hubei People's Republic of China
| | - Si-Yu Sheng
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou Hubei People's Republic of China
| | - Ping Mei
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou Hubei People's Republic of China
| | - Yi Liu
- State Key Laboratory of Virology and Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education); College of Chemistry and Molecule Sciences, Wuhan University; Wuhan Hubei People's Republic of China
| | - Qing-Lian Guo
- Zhongnan Hospital of Wuhan University; Wuhan Hubei People's Republic of China
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Lv J, Lv CQ, Mei P, Qi SM. Diagnosis value of membrane glycolipids biochemistry index in intracranial and gastrointestinal tumors. Asian Pac J Cancer Prev 2016; 16:2693-6. [PMID: 25854348 DOI: 10.7314/apjcp.2015.16.7.2693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The diagnostic value of membrane glycolipid biochemistry index, the lipid-bound sialic acid (LSA) and total sialic acid (TSA) in cerebrospinal fluid (CSF) was evaluated in 30 intracranial and 65 gastrointestinal tumors. The plasma LSA, TSA and red cell membrane sialic acid (R-SA) in were determined according to the method of Sevenmerhulm. Our results showed that the levels of LSA and TSA in CSF of intracranial tumor patients was higher than that of normal group(p<0.01). The concentration of TSA and LSA in patients with malignant glioma was higher than that of benign meningioma patients(P<0.01). No significance was found between intracranial halmatoma patients and normal control group for levels of membrane glycolipids (p>0.05). Results also found that the plasma LSA, TSA and R-SA of gastric carcinoma were significantly higher than those of control group (p<0.05); while no significant difference was found in the plasma LSA, TSA and R-SA levels between chronic gastritis, gastrohelcoma and normal control group (p>0.05). Plasma LSA, TSA and R-SA levels of gastric carcinoma patient were significantly higher than those of chronic gastritis patients and gastrohelcoma patients(p<0.05). It was also found that plasma LSA, TSA and R-SA contents were significantly higher in large intestine carcinoma patients than in benign in stestine tumor patients (p<0.05) while no significant difference was found between intestine benign tumor and normal control group (p>0.05). The levels of LSA, TSA and R-SA were obviously higher in the patients with metastasis than in the ones without (p<0.05.) The membrane glycolipid biochemistry index LSA and TSA in CSF are sensive markers for diagnosing intracranial tumors. For gastrointestinal malignant tumors the plasma LSA TSA and red blood cell membrane SA may be considered as auxiliary indicators for diagnosis. They can be used for distinguishing benign from malignant tumors.
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Affiliation(s)
- Jun Lv
- Department of Biochemistry, Wannan Medical College, Wuhu, Anhui, China E-mail :
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Yan LX, Liu YH, Xiang JW, Wu QN, Xu LB, Luo XL, Zhu XL, Liu C, Xu FP, Luo DL, Mei P, Xu J, Zhang KP, Chen J. PIK3R1 targeting by miR-21 suppresses tumor cell migration and invasion by reducing PI3K/AKT signaling and reversing EMT, and predicts clinical outcome of breast cancer. Int J Oncol 2015; 48:471-84. [PMID: 26676464 PMCID: PMC4725461 DOI: 10.3892/ijo.2015.3287] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Accepted: 11/22/2015] [Indexed: 01/06/2023] Open
Abstract
We have previously shown that dysregulation of miR-21 functioned as an oncomiR in breast cancer. The aim of the present study was to elucidate the mechanisms by which miR-21 regulate breast tumor migration and invasion. We applied pathway analysis on genome microarray data and target-predicting algorithms for miR-21 target screening, and used luciferase reporting assay to confirm the direct target. Thereafter, we investigated the function of the target gene phosphoinositide-3-kinase, regulatory subunit 1 (α) (PIK3R1), and detected PIK3R1 coding protein (p85α) by immunohistochemistry and miR-21 by RT-qPCR on 320 archival paraffin-embedded tissues of breast cancer to evaluate the correlation of their expression with prognosis. First, we found that PIK3R1 suppressed growth, invasiveness, and metastatic properties of breast cancer cells. Next, we identified the PIK3R1 as a direct target of miR-21 and showed that it was negatively regulated by miR-21. Furthermore, we demonstrated that p85α overexpression phenocopied the suppression effects of antimiR-21 on breast cancer cell growth, migration and invasion, indicating its tumor suppressor role in breast cancer. On the contrary, PIK3R1 knockdown abrogated antimiR‑21-induced effect on breast cancer cells. Notably, antimiR-21 induction increased p85α, accompanied by decreased p-AKT level. Besides, antimiR-21/PIK3R1-induced suppression of invasiveness in breast cancer cells was mediated by reversing epithelial-mesenchymal transition (EMT). p85α downregulation was found in 25 (7.8%) of the 320 breast cancer patients, and was associated with inferior 5-year disease-free survival (DFS) and overall survival (OS). Taken together, we provide novel evidence that miR-21 knockdown suppresses cell growth, migration and invasion partly by inhibiting PI3K/AKT activation via direct targeting PIK3R1 and reversing EMT in breast cancer. p85α downregulation defined a specific subgroup of breast cancer with shorter 5-year DFS and OS, which may require more aggressive treatment.
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Affiliation(s)
- Li-Xu Yan
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Yan-Hui Liu
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Jian-Wen Xiang
- Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong, P.R. China
| | - Qi-Nian Wu
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, P.R. China
| | - Lei-Bo Xu
- Sun Yat-sen Memorial Hospital, SunYat-sen University, Guangzhou, Guangdong, P.R. China
| | - Xin-Lan Luo
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Xiao-Lan Zhu
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Chao Liu
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Fang-Ping Xu
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Dong-Lan Luo
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Ping Mei
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Jie Xu
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Ke-Ping Zhang
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
| | - Jie Chen
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou, Guangdong, P.R. China
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Xiao W, Miao C, Yan X, Mei P. Effect of various electrophoretically deposited nano-silica contents on the properties of poly(vinylidene fluoride-co-hexafluoropropylene)-based electrospun polymer electrolytes. POLYM INT 2015. [DOI: 10.1002/pi.5050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wei Xiao
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
| | - Chang Miao
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
| | - Xuemin Yan
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
| | - Ping Mei
- College of Chemistry and Environmental Engineering; Yangtze University; Jingzhou 434023 People's Republic of China
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Tee BCK, Chortos A, Berndt A, Nguyen AK, Tom A, McGuire A, Lin ZC, Tien K, Bae WG, Wang H, Mei P, Chou HH, Cui B, Deisseroth K, Ng TN, Bao Z. A skin-inspired organic digital mechanoreceptor. Science 2015; 350:313-6. [DOI: 10.1126/science.aaa9306] [Citation(s) in RCA: 591] [Impact Index Per Article: 65.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Lai L, Jin JC, Xu ZQ, Mei P, Jiang FL, Liu Y. Necrotic cell death induced by the protein-mediated intercellular uptake of CdTe quantum dots. Chemosphere 2015; 135:240-249. [PMID: 25965003 DOI: 10.1016/j.chemosphere.2015.04.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 04/06/2015] [Accepted: 04/17/2015] [Indexed: 06/04/2023]
Abstract
The toxicity of CdTe QDs with nearly identical maximum emission wavelength but modified with four different ligands (MPA, NAC, GSH and dBSA) to HEK293 and HeLa cells were investigated using flow cytometry, spectroscopic and microscopic methods. The results showed that the cytotoxicity of QDs increased in a dose- and time-dependent manner. No appreciable fraction of cells with sub-G1 DNA content, the loss of membrane integrity, and the swelling of nuclei clearly indicated that CdTe QDs could lead to necrotic cell death in HEK293 cells. JC-1 staining and TEM images confirmed that QDs induced MPT, which resulted in mitochondrial swelling, collapse of the membrane potential. MPT is an important step in QDs-induced necrosis. Moreover, QDs induced MPT through the elevation of ROS. The fluorimetric assay and theoretical analysis demonstrated ROS production has been associated with the internalization of QDs with cells. Due to large surface/volume ratios of QDs, when QDs added in the culture medium, serum proteins in the culture medium will be adsorbed on the surface of QDs. This adsorption of serum protein will change the surface properties and size, and then mediate the cellular uptake of QDs via the clathrin-mediated endocytic pathway. After entering into cells, the translocation of QDs in cells is usually via endosomal or lysosomal vesicles. The rapid degradation of QDs in lysosome and the lysosomal destabilization induce cell necrosis. This study provides a basis for understanding the cytotoxicity mechanism of CdTe QDs, and valuable information for safe use of QDs in the future.
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Affiliation(s)
- Lu Lai
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan 430072, PR China; College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Jian-Cheng Jin
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan 430072, PR China
| | - Zi-Qiang Xu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan 430072, PR China
| | - Ping Mei
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, PR China
| | - Feng-Lei Jiang
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan 430072, PR China.
| | - Yi Liu
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan 430072, PR China; College of Chemistry and Material Sciences, Hubei Engineering University, Xiaogan 432000, PR China.
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Ng TN, Schwartz DE, Mei P, Krusor B, Kor S, Veres J, Bröms P, Eriksson T, Wang Y, Hagel O, Karlsson C. Printed dose-recording tag based on organic complementary circuits and ferroelectric nonvolatile memories. Sci Rep 2015; 5:13457. [PMID: 26307438 PMCID: PMC4549707 DOI: 10.1038/srep13457] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [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: 03/18/2015] [Accepted: 07/28/2015] [Indexed: 11/23/2022] Open
Abstract
We have demonstrated a printed electronic tag that monitors time-integrated sensor signals and writes to nonvolatile memories for later readout. The tag is additively fabricated on flexible plastic foil and comprises a thermistor divider, complementary organic circuits, and two nonvolatile memory cells. With a supply voltage below 30 V, the threshold temperatures can be tuned between 0 °C and 80 °C. The time-temperature dose measurement is calibrated for minute-scale integration. The two memory bits are sequentially written in a thermometer code to provide an accumulated dose record.
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Affiliation(s)
- Tse Nga Ng
- Palo Alto Research Center, Palo Alto, CA 94304, USA
| | | | - Ping Mei
- Palo Alto Research Center, Palo Alto, CA 94304, USA
| | - Brent Krusor
- Palo Alto Research Center, Palo Alto, CA 94304, USA
| | - Sivkheng Kor
- Palo Alto Research Center, Palo Alto, CA 94304, USA
| | - Janos Veres
- Palo Alto Research Center, Palo Alto, CA 94304, USA
| | - Per Bröms
- Thin Film Electronics AB, Linköping, Sweden
| | | | - Yong Wang
- Thin Film Electronics AB, Linköping, Sweden
| | - Olle Hagel
- Thin Film Electronics AB, Linköping, Sweden
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Gong B, Liu WW, Nie WJ, Li DF, Xie ZJ, Liu C, Liu YH, Mei P, Li ZJ. MiR-21/RASA1 axis affects malignancy of colon cancer cells via RAS pathways. World J Gastroenterol 2015; 21:1488-1497. [PMID: 25663768 PMCID: PMC4316091 DOI: 10.3748/wjg.v21.i5.1488] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 08/28/2014] [Accepted: 09/30/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine how the oncogene miR-21 regulates the RAS signaling pathways and affects colon cancer cell behaviors.
METHODS: RAS p21 GTPase activating protein 1 (RASA1) protein expression in six colon cancer cell lines was assessed by Western blot. Colon cancer RKO cells were chosen for transfection because they are KRAS wild type colon cancer cells whose RASA1 expression is significantly decreased. RKO cells were transfected with vectors overexpressing or down-regulating either miR-21 or RASA1. Furthermore, a luciferase reporter assay was used to determine whether RASA1 is a gene target of miR-21. Then, changes in mRNA and protein levels of RASA1, RAS-GTP, and other components of the RAS signaling pathways were assessed in transfected RKO cells by real-time quantitative reverse transcription-polymerase chain reaction, Western blot and immunoprecipitation. Finally, cell proliferation, apoptosis, invasion, and tumor formation ability were assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide dye assay, flow cytometry, transwell assay, and animal experiment, respectively.
RESULTS: RASA1 protein levels were significantly decreased in RKO cells compared with the other 5 colon cancer cell lines, and RASA1 was confirmed as a target gene of miR-21. Interestingly, RASA1 mRNA and protein levels in pre-miR-21-LV (up-regulation of miR-21) cells were lower than those in anti-miR-21-LV (down-regulation of miR-21) cells (P < 0.05). In addition, pre-miR-21-LV or siRASA1 (down-regulation of RASA1) cells showed higher cell proliferation, reduced apoptosis, increased expression of RAS-GTP, p-AKT, Raf-1, KRAS, and p-ERK1/2, and higher invasion and tumor formation ability, compared with control, anti-miR-21-LV or pcDNA3.1-RASA1 (up-regulation of RASA1) cells (P < 0.05).
CONCLUSION: RASA1 is a target gene of miR-21, which promotes malignant behaviors of RKO cells through regulation of RASA1 expression.
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Liu H, Juan YH, Fei H, Mei P, Zhang X, Xu W, Liang C, Wang Q, Saboo SS. Tumor involvement of the left atrium and mitral valve: imaging features of intra-cardiac malignancy. QJM 2014; 107:747-9. [PMID: 24633259 DOI: 10.1093/qjmed/hcu058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Liu
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Y-H Juan
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - H Fei
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - P Mei
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - X Zhang
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - W Xu
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - C Liang
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Q Wang
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - S S Saboo
- From the Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China, Department of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Linkou and Chang Gung University, Taoyuan, Taiwan, Department of Cardiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, GuangZhou, GuangDong, China and Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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Liu S, Mei P, Shi W, Zhang B, Li S, Liang X, Ye Z, Xu L, Ma J, Li Z, Zhang L, Wang W, Wang L, Li R, Feng Z, Dong W, Tao Y. Urinary messenger RNA of the receptor activator of NF-kappaB could be used to differentiate between minimal change disease and membranous nephropathy. Biomarkers 2014; 19:597-603. [DOI: 10.3109/1354750x.2014.956148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | - Ping Mei
- Department of Pathology, Guangdong General Hospital, Guangdong Academy of Medical Sciences
Guangzhou, GuangdongChina
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Feng Z, Liu S, Shi W, Xiao H, Liang X, Liu X, Ye Z, Wang S, Liang Y, Zhang B, Wang W, Liu Y, Mei P, Xu L, Ma J, Xia Y. [Renal expression of RANK-RANKL in a rat model of puromycin aminonucleoside nephropathy]. Nan Fang Yi Ke Da Xue Xue Bao 2014; 34:65-69. [PMID: 24463119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To investigate RANK-RANKL expression in the kidneys of a rat model of puromycin aminonucleoside nephropathy (PAN). METHODS Thirty-six SD rats were randomly divided into PAN model group and normal control group. PAN was induced by a single intravenous injection of 100 mg/kg puromycin aminonucleoside. Serum creatinine and 24-hour urinary protein were measured on days 3, 7, and 14 after the injection, and renal pathologies were assessed with optical and immune transmission electron microscopy. The expression of RANK and RANKL in the kidneys was examined using reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting. RESULTS The PAN model rats showed massive proteinuria and elevated serum creatinine on day 3, which peaked on day 7. RANK-RANKL protein and mRNA expressions in PAN model group was higher than those in the control group. In the PAN rats, RANK was expressed mainly on the top cell membrane and in the cytoplasm of renal podocytes with a significantly increased expression level compared with that in the control group. CONCLUSION The PAN rat model shows aberrant RANK and RANKL expressions in the podocytes, indicating their contribution to podocyte injury in PAN.
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Affiliation(s)
- Zhonglin Feng
- Department of Nephrology, Guangdong Generral Hospital/Guangdong Provincial Academy of Medical Sciences, Guangzhou 510080, China. E-mail:
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Xiang J, Zhao LL, Luo Y, Yan ZH, Wang CH, Zhang J, Zhou F, Mei P. Synthesis, crystal structures and magnetic studies on the nickel(II) and manganese(II) complexes containing the 2-pyridyl methyl ketazine. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.01.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
BACKGROUND KRAS mutation plays an important role in the pathogenesis of pancreatic cancer. However, the role of wild-type KRAS in the progression of pancreatic cancer remains unknown. The present study was to investigate the expression of the Ras GTPase activating protein (DAB2IP) in pancreatic cancer and its clinical significance. METHODS The expression of DAB2IP in pancreatic cancer cell lines and normal human pancreatic ductal epithelial cells was analyzed by Western blotting and real-time quantitative reverse transcription-PCR (qRT-PCR). The KRAS mutational types of pancreatic cancer tissues obtained from pancreatic cancer patients (n=20) were also analyzed. Subsequently, DAB2IP expression was detected in pancreatic cancer tissues, adjacent and normal pancreatic tissues (n=2) by immunohistochemistry, and the relationship between DAB2IP expression and the clinical characteristics of patients was evaluated. RESULTS Western blotting and qRT-PCR results showed that DAB2IP expression in pancreatic cancer cells with wild-type KRAS was lower than that in those with mutation-type KRAS and normal human pancreatic ductal epithelial cells (P<0.05). Immunohistochemistry showed that DAB2IP expression was lower in pancreatic cancer tissues than that in adjacent and normal pancreatic tissues (Z=-4.000, P=0.000). DAB2IP expression was lower in pancreatic cancer patients with the wild-type KRAS gene than that in those with KRAS mutations (WilcoxonW=35.000, P=0.042). Furthermore, DAB2IP expression in patients with perineurial invasion was lower than that in those without invasion (WilcoxonW=71.500, P=0.028). DAB2IP expression was lower in patients with more advanced stage than that in those with early clinical stage (WilcoxonW=54.000, P=0.002). CONCLUSIONS DAB2IP expression was reduced in patients with pancreatic cancer compared with those with no cancer. DAB2IP expression was correlated with the KRAS gene, perineurial invasion and clinical stage of the disease. Our data indicated that DAP2IP expression can be used as a potential prognostic indicator and a promising molecular target for therapeutic intervention in patients with pancreatic cancer.
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Affiliation(s)
- Yi-Fan Duan
- Southern Medical University, Guangzhou 510515, China
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Lai L, Lin C, Xiao CQ, Xu ZQ, Han XL, Fu L, Li DW, Mei P, Jiang FL, Guo QL, Liu Y. Adhesion of quantum dots-induced membrane damage of Escherichia coli. J Colloid Interface Sci 2013; 389:61-70. [DOI: 10.1016/j.jcis.2012.09.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 09/01/2012] [Accepted: 09/03/2012] [Indexed: 11/30/2022]
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Yan XM, Mei P, Xiong L, Gao L, Yang Q, Gong L. Mesoporous titania–silica–polyoxometalate nanocomposite materials for catalytic oxidation desulfurization of fuel oil. Catal Sci Technol 2013. [DOI: 10.1039/c3cy20732c] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lai L, Lin C, Xu ZQ, Han XL, Tian FF, Mei P, Li DW, Ge YS, Jiang FL, Zhang YZ, Liu Y. Spectroscopic studies on the interactions between CdTe quantum dots coated with different ligands and human serum albumin. Spectrochim Acta A Mol Biomol Spectrosc 2012; 97:366-376. [PMID: 22797377 DOI: 10.1016/j.saa.2012.06.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 06/10/2012] [Accepted: 06/16/2012] [Indexed: 06/01/2023]
Abstract
This paper investigates the interactions between human serum albumin (HSA) and CdTe quantum dots (QDs) with nearly identical hydrodynamic size, but capped with four different ligands (MPA, NAC, and GSH are negatively charged; CA is positively charged) under physiological conditions. The investigation was carried out using fluorescence spectroscopy, circular dichroism (CD) spectra, UV-vis spectroscopy, and dynamic light scattering (DLS). The results of fluorescence quenching and UV-vis absorption spectra experiments indicated the formation of the complex of HSA and negatively charged QDs (MPA-CdTe, NAC-CdTe, and GSH-CdTe), which was also reconfirmed by the increasing of the hydrodynamic radius of QDs. The K(a) values of the three negatively charged QDs are of the same order of magnitude, indicating that the interactions are related to the nanoparticle itself rather than the ligands. ΔH<0 and ΔS>0 implied that the electrostatic interactions play predominant roles in the adsorption process. Furthermore, it was also proven that QDs can induce the conformational changes of HSA from the CD spectra and the three-dimensional fluorescence spectra of HSA. However, our results demonstrate that the interaction mechanism between the positively charged QDs (CA-CdTe) and HSA is significantly different from negatively charged QDs. For CA-CdTe QDs, both the static and dynamic quenching occur within the investigated range of concentrations. According to the DLS results, some large-size agglomeration also emerged.
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Affiliation(s)
- Lu Lai
- State Key Laboratory of Virology & Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecule Sciences, Wuhan University, Wuhan 430072, PR China
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Xiang J, Mei P. The reactivity of hydrazones in the presence of Zn(II) ion: Oxidative coupling of hydrazones with alcohol and oxidative cyclization of hydrazones. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.06.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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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