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Du Y, Fang Z, Jiao J, Xi G, Zhu C, Ren Y, Guo Y, Wang Y. Application of ultrasound-based radiomics technology in fetal-lung-texture analysis in pregnancies complicated by gestational diabetes and/or pre-eclampsia. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 57:804-812. [PMID: 32250510 DOI: 10.1002/uog.22037] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 03/06/2020] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVES To analyze and compare, using ultrasound-based radiomics technology, fetal-lung texture in pregnancies affected by gestational diabetes mellitus (GDM) and/or pre-eclampsia (PE) and in normal pregnancies, overall and at different gestational ages. METHODS In this retrospective study, 430 high-throughput features per fetal-lung image were extracted from 548 fetal-lung ultrasound images (obtained at the level of the four-chamber view of the heart) in 548 pregnant women who delivered between July 2018 and August 2019 at the Obstetrics and Gynecology Hospital of Fudan University. Images had been obtained during ultrasound examinations between 28 and 41 weeks of gestation. The data were divided randomly into training set (80% of fetal-lung images) and independent test set (20% of images), and 20% of the images in the training set were then selected as the validation set. A standard machine-learning model based on ultrasound-based radiomics technology was created using features of fetal-lung texture extracted from the images, and a regression model was used to evaluate the relationship between lung-texture features, GDM and/or PE and gestational age. RESULTS Of the 548 pregnancies included, 108 were affected by GDM alone, 71 by PE alone and 25 by both GDM and PE, and 344 were normal. The overall performance of the GDM and PE prediction model was superior to that of the gestational-age prediction model, with an area under the receiver-operating-characteristics curve of 0.95-0.99, sensitivity of 78.8-97.1% in the validation set and 74.5-91.3% in the independent test set, specificity of 79.8-94.3% in the validation set and 75.7-88.4% in the independent test set and accuracy of 81.0-95.3% in the validation set and 80.6-86.4% in the independent test set. CONCLUSIONS Using ultrasound-based radiomics technology, fetal lungs from pregnancies grouped according to whether they were affected by GDM and/or PE could be distinguished from each other and from fetal lungs of normal pregnancies, and lungs from pregnancies at different gestational ages could be distinguished. These findings support further research to explore the use of this non-invasive technology to predict neonatal respiratory complications in women with PE, GDM or their combination. © 2020 International Society of Ultrasound in Obstetrics and Gynecology.
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Yang YT, Du Y, Yuan WJ, Wang L. [Role of histone demethylase KDM6B in HBx-mediated podocyte-macrophage transdifferentiation]. ZHONGHUA YI XUE ZA ZHI 2021; 101:866-871. [PMID: 33789369 DOI: 10.3760/cma.j.cn112137-20210119-00170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the expression of lysine (k)-specific demethylase 6B (KDM6B) in the renal tissues of hepatitis B virus-associated glomerulonephritis (HBV-GN) patients and human podocytes transfected with hepatitis B virus X (HBx) gene, and its role in HBx-mediated podocyte-macrophage transdifferentiation (PMT). Methods: Forty-eight patients diagnosed as HBV-GN by renal biopsy from 2013 to 2018 at the Shanghai Jiaotong University Affiliated First People's Hospital were included in this study. Thirty patients with primary glomerulonephritis (PGN) and fifteen patients with renal tumor were chosen as control group. The expression of KDM6B and macrophage marker F4/80 in renal tissues of HBV-GN patients was observed by immunofluorescence and immunohistochemistry. The association between kidney KDM6B levels and clinical features of HBV-GN patients was analyzed. The expression of KDM6B, F4/80, major histocompatibility complex (MHC)-Ⅱ and CD40 in the podocytes was detected by Western blotting. The contents of interferon-γ (IFN-γ) and interleukin-6 (IL-6) in the supernatant were determined by enzyme-linked immunosorbent assay (ELISA). The small interfering RNA of KDM6B (KDM6B siRNA) was used to silence the expression of KDM6B and the protein levels of KDM6B, F4/80 and tri-methylation of lysine 27 of histone H3 (H3K27me3) induced by HBx gene transfection were detected by Western blotting. Results: Renal KDM6B expression was significantly increased in HBV-GN patients compared to normal control (0.022±0.004 vs 0.006±0.002, P=0.006). There was no significant difference in the positive rate of KDM6B among different pathological types of HBV-GN (P=0.139). Moreover, co-expression of KDM6B and F4/80 could be observed in the podocytes of HBV-GN patients. Patients with estimated glomerular filtration (eGFR)<60 ml·min-1·(1.73 m2)-1or proteinuria ≥ 3.5 g/day had a significantly higher renal KDM6B expression compared to control groups (all P<0.05). In addition, the expression of KDM6B, F4/80, MHC-II and CD40 was significantly up-regulated in the podocytes transfected with HBx gene (all P<0.05). The content of IFN-γ and IL-6 in the supernatant was significantly increased (all P<0.05). After gene silencing of KDM6B, the expression of F4/80 induced by HBx in the podocytes was significantly down-regulated, while the level of H3K27me3 was significantly increased (both P<0.05). Conclusions: HBx could induce KDM6B expression in podocytes and initiate PMT, thereby involving in the dysfunction of immune microenviroment in the renal tissues of HBV-GN.
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Du Y, Jia Q, Yao L, Pang L, Qiu Y, Zhang JJ, Zhang ZY, Wang WD. Forensic Analysis of 105 Autopsy Cases of Psychiatric Patients. FA YI XUE ZA ZHI 2021; 37:54-57. [PMID: 33780185 DOI: 10.12116/j.issn.1004-5619.2020.400303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Indexed: 11/30/2022]
Abstract
Abstract Objective To provide reference for medical and health services and forensic expertise, the causes and manners of death of psychiatric patients were analyzed retrospectively. Methods A total of 105 autopsy cases of psychiatric patients accepted and settled by Institute of Forensic Science of Criminal Investigation Police University of China from 2004 to 2019 were collected. The cases were divided into four groups: disease death, suicidal death, accidental death and homicidal death. The common causes of death of each group were statistically analyzed and the differences in age, disease duration, body mass index (BMI) and gender among the groups were assessed. Results Of the 105 cases, 60 were male and 45 were female, the course of psychosis was (12.9±10.4) years, the age of the deceased was (51.3±11.4) years, and 61.0% was schizophrenic. There were 50 cases (47.6%) in the disease death group, in which the psychiatric patients were the oldest and had the longest course of psychosis and lowest BMI. Pulmonary thromboembolism, respiratory infections, and cardiogenic disease were the most common causes of death in the group. There were 26 accidental deaths (24.8%), among which traffic accidents were the most common cause of death. There were 15 homicidal deaths (14.3%), all of which were male, with craniocerebral injury being the most common cause of death. There were 14 suicidal deaths (13.3%). In suicidal death group, the age of the deceased was the youngest, the course of psychosis was the shortest and falling from the height was the most common way to commit suicide. Conclusion Understanding the common causes of death of psychiatric patients may contribute to developing measures to reduce the mortality rate of the population. It is necessary to investigate the age, course of psychosis and gender of the deceased when assessing the manner of death.
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Du Y, Sidorenkov G, Heuvelmans M, Groen H, Greuter M, De Bock G. MA05.11 Effect of Lowering the Starting Age for Lung Cancer Screening by Low-Dose Computed Tomography Among Women: A Harm-Benefit Analysis. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Du Y, Li Y, Dorrius M, Sidorenkov G, Vonder M, Vliegenthart R, Heuvelmans M, Cui X, Ye Z, De Bock G. P45.03 Lung Nodule Management Based on Diameter and Volume in Lung Cancer Screening with Low-Dose Computed Tomography. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fukui M, Hashimoto G, Lopes B, Du Y, Stanberry L, Garcia S, Goessl M, Enriquez-Sarano M, Bapat V, Sorajja P, Lesser J, Cavalcante J. Computed tomography derived left ventricular global longitudinal strain associate with clinical outcomes in patients undergoing transcatheter aortic valve replacement. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Computed tomography angiography (CTA) is key imaging modality for procedure planning for transcatheter aortic valve replacement (TAVR). Functional assessment by CTA with LV global longitudinal strain (LVGLS) has recently shown to be feasible. However, there is limited data on its prognostic value in patients with severe aortic stenosis (AS) who treated with TAVR.
Purpose
To evaluate the association of baseline CTA-LVGLS with post-TAVR outcome.
Methods
Patients who underwent contrast multiphasic gated CTA for TAVR planning were studied. LVGLS was measured using dedicated feature-tracking software (Medis®). Cox regression analysis evaluated the association of baseline LVGLS with a composite outcome of all-cause death and heart failure hospitalization after TAVR.
Results
A total of 431 patients were included (median [IQR] age, 83 [77,87]years; 44% female); the society of Thoracic Surgeons Predicted Risk of Mortality (STS-PROM) score, 3.3 [2.3,5.1]%; CTA-LVGLS, -18.0 [-21.6,-14.2]%; LV ejection fraction was preserved at 60 [55,65]%. After a median follow-up of 19 [13,27] months, 99 composite outcomes occurred after TAVR. On multivariable Cox regression analysis, LVGLS was associated with the risk of composite outcome even after adjustment for baseline characteristics (Figure A). Patients with reduced LVGLS (above the median >-18.0%) had higher risk of the composite outcome than those with preserved GLS (p = 0.003; Figure B).
Conclusion
Baseline CTA-LVGLS was associated with the risk of death or heart failure hospitalization over the clinical and echocardiographic characteristics in severe AS patients undergoing TAVR.
Abstract Figure.
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Cunha Lopes B, Hashimoto G, Fukui M, Du Y, Bae R, Stanberry L, S Schwartz R, R Lesser J, Sorajja P, L Cavalcante J. Functional DSCT assessment of tricuspid regurgitation: AROA reproducibility and comparison with 3D TEE. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
onbehalf
Minneapolis Heart Institute Foundation
Background
Tricuspid regurgitation (TR) assessment by echocardiography is often challenging. Functional dual-source CT (DSCT) with third-generation scanners allows accurate evaluation of leaflet anatomy and mobility.
Purpose
Investigate the reproducibility of tricuspid anatomical regurgitant orifice area (AROA) by DSCT, and its correlation with TR quantification by 3D TEE.
Methods
We evaluated patients with symptomatic TR referred for transcatheter tricuspid repair. DSCT (SOMATOM Force [Siemens, Erlangen, Germany]) and 3D TEE was performed on the same day as part of our institutional registry. DSCT scans were retrospective and ECG-gated, with a contrast protocol to enhance the right heart. The reproducibility of tricuspid AROA was assessed in 20 patients. The tricuspid AROA was compared with the TR severity (5-grade classification) and the 3D VCA by TEE (Panel 1).
Results
We included 60 patients (Table). The AROA had excellent intra and interobserver reliability (ICC 0.99 [0.97, 0.99] and 0.99 [0.96, 0.99]). We found a stepwise increase in tricuspid AROA from moderate to torrential TR (Panel 2A). Of 60 patients, 3D VCA was feasible in 39; in those, we found an excellent linear correlation of AROA and 3D VCA (Panel 2B).
Conclusions
Tricuspid AROA by DSCT was reproducible, showed a stepwise increase from moderate to massive TR and correlated with 3D VCA by TEE.
Baseline Patient Characteristics All (n = 60) Age, years 82 ± 7 BSA, m2 1.8 ± 0.2 NYHA III-IV, n(%) 42 (70) Atrial Fibrilation 55 (91) Hypertension 44 (73) Pulmonary Hypertension 34 (56) Chronic Kidney Disease 25 (44) Coronary Artery Disease 17 (28) Chronic Lung Disease 14 (23) Permanent Pacemaker 13 (21) Diabetes Mellitus 10 (17) Mitral Valve Repair (MitraClip) 9 (15) Mitral Valve Replacement 7 (12) Mitral Valve Repair 3 (5) Aortic Valve Replacement 5 (8) Values are mean ± SD and n (%). BSA = body surface area. Abstract Figure. Panels
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Murray I, Du Y. Systemic Radiotherapy of Bone Metastases With Radionuclides. Clin Oncol (R Coll Radiol) 2020; 33:98-105. [PMID: 33353771 DOI: 10.1016/j.clon.2020.11.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/23/2020] [Accepted: 11/30/2020] [Indexed: 11/30/2022]
Abstract
Treatments of bone metastases using radionuclides are now well established in oncology. It is also a field that continues to develop. This article reviews the evidence base that led to the approval of strontium-89 and samarium-153 ethylenediaminetetramethylene phophanate (EDTMP) for the palliation of pain from bone metastases, as well as the evidence for the use of radium-223 in metastatic castrate-resistant prostate cancer. Efforts to optimise treatments and improve response rates, either by safely increasing the radiation dose to bone metastases or by combining treatment with non-radiation-based therapies, are discussed. In addition, the development of both alpha- and beta-particle-emitting radiopharmaceuticals designed to target prostate-specific membrane antigen are reviewed.
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Du Y, Li WP, Xiong H, Zhang S, Zhou ZY, Deng JP, Zhang JN. [Efficacy and safety of pylorus-preserving gastrectomy for early gastric cancer located in the middle third of the stomach: a meta-analysis]. ZHONGHUA WEI CHANG WAI KE ZA ZHI = CHINESE JOURNAL OF GASTROINTESTINAL SURGERY 2020; 23:1088-1096. [PMID: 33212558 DOI: 10.3760/cma.j.cn.441530-20200228-00098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: It is yet to be clarified whether pylorus-preserving gastrectomy (PPG) for early gastric cancer will bring the risk of radical tumor resection, whether it will increase the incidence of postoperative complications, and how much is the benefit of the quality of life for patients after surgery, these issues are not clear. This meta-analysis aims to evaluate the efficacy and safety of pylorus-preserving gastrectomy (PPG) for early middle gastric cancer. Methods: The Chinese and English literatures about PPG and distal gastrectomy (DG) for early gastric cancer were searched from PubMed, Embase, The Cochrane Library, Web of Science, CNKI net and Wanfang database. Literature inclusion criteria: (1) Prospective or retrospective cohort study of PPG and DG for early middle-third gastric cancer published publicly; (2) Patients with early middle-third gastric cancer; (3) The enrolled literatures include at least one of the following outcome indicators: the efficacy indicators include gallstone, residual gastritis, bile reflux, delayed gastric emptying, dumping syndrome, reflux esophagitis and overall complication; the long-term prognostic indicators include 5-year survival rate and 5-year tumor recurrence. Literature exclusion criteria: (1) Reviews, case reports, conference summaries and other non-control studies; (2) Repeated published studies, incomplete studies and unextractable studies; (3) The depth of tumor invasion exceeding submucosa. The search time ended in July 2020. The basic information and evaluation indicators included in the article were extracted. The retrospective study was evaluated using Newcastle-Ottawa literature quality evaluation scale. The prospective randomized controlled study was evaluated using Jadad modified scale. Meta-analysis was performed using Review Manager 5.3. Publication bias was assessed using funnel map. Publication bias was tested using Egger tools. Results: A total of 717 literatures were retrieved, and 17 literatures were enrolled finally, including 2 randomized controlled trials and 15 retrospective studies. A total of 2427 patients were enrolled, including 948 in PPG group and 1479 in DG group. The meta-analysis of the efficacy indicators showed that there were significant differences in gallstones incidence (OR=0.42, 95% CI: 0.28-0.65, P<0.001), residual gastritis incidence (OR=0.50, 95% CI: 0.32-0.77,P=0.002), bile reflux incidence (OR=0.30, 95% CI: 0.20-0.45, P<0.001), delayed gastric emptying incidence (OR=2.40, 95% CI:1.67-3.45, P<0.001), and postoperative dumping syndrome incidence (OR=0.28, 95% CI: 0.15-0.51, P<0.001), while there were no significant differences in postoperative overall complications (OR=0.97, 95% CI: 0.69-1.35, P=0.840), reflux esophagitis incidence (OR=0.79, 95% CI: 0.39-1.61, P=0.520) between the two groups. The meta-analysis of the long-term prognostic indicators showed that no significant differences of 5-year survival (OR=1.02, 95% CI: 0.61-1.71, P=0.940) or 5-year tumor recurrence (OR=0.77, 95% CI: 0.36-1.68, P=0.520) were observed between the two groups. Conclusion: The incidences of gallstone, residual gastritis, dumping syndrome, bile reflux are lower after PPG in early gastric cancer, while the postoperative overall complications and long-term survival are comparable between PPG and DG, indicating that PPG is quite safe and feasible.
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Han K, Lu Q, Zhu WJ, Wang TZ, Du Y, Bai L. Correlations of degree of coronary artery stenosis with blood lipid, CRP, Hcy, GGT, SCD36 and fibrinogen levels in elderly patients with coronary heart disease. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2020; 23:9582-9589. [PMID: 31773710 DOI: 10.26355/eurrev_201911_19453] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To explore the correlations between the degree of coronary artery stenosis with blood lipid, C-reactive protein (CRP), homocysteine (Hcy), gamma-glutamyl transpeptidase (GGT), soluble cluster determinant 36 (sCD36), and fibrinogen (Fib) levels in elderly patients with coronary heart disease. PATIENTS AND METHODS The Gensini scores for the coronary artery stenosis were analyzed in patients with single-vessel, double-vessel, and multi-vessel coronary artery diseases in observation group and normal people in control group. Changes in blood lipid-associated parameters, including total cholesterol (TC), triacylglycerol (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C), CRP, Hcy, GGT, sCD36, and Fib were compared between the two groups. The correlations between the Gensini score with changes of the blood-associated parameters, CRP, Hcy, GGT, sCD36, and Fib were analyzed. Finally, univariate and multivariate logistic regression analyses were conducted to determine the risk factors for coronary artery stenosis in elderly patients with coronary heart disease. RESULTS The Gensini score was significantly higher in coronary heart disease patients with multi-vessel, double-vessel, and single-vessel coronary artery diseases compared with that in normal people (p<0.05). The levels of the blood lipid-associated parameters TC, TG, and LDL-C in observation group were substantially higher than those in control group (p<0.05), and the level of HDL-C was notably lower than that in control group (p<0.05). Subjects in observation group had markedly higher levels of CRP, Hcy, GGT, sCD36, and Fib than control group (p<0.05). The Gensini score for the degree of coronary artery stenosis was positively correlated with the levels of the blood lipid-associated parameters TC and TG, CRP, Hcy, GGT, sCD36, and Fib (p<0.05) and negatively associated with the level of HDL-C (p<0.05). Blood lipid-associated parameters, CRP, Hcy, GGT, sCD36, and Fib were the independent risk factors for coronary artery stenosis in elderly patients with coronary heart disease patients. CONCLUSIONS The elevations of blood lipid, CRP, Hcy, GGT, sCD36, and Fib levels are closely associated with coronary artery stenosis, and serve as the independent risk factors for coronary artery stenosis.
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Sun J, Shi Y, Du Y, Wang Z, Liu Z, Wang H, Zhao G, Ma Y, Zheng M. Rapid Detection of Diarrheagenic Escherichia coli by a New Multiplex Real-Time Quantitative PCR Assay. APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820060174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhang H, Cao X, Wang D, Xin H, Liu Z, Yan J, Feng B, Quan Z, Du Y, Liu J, Guan L, Shen F, Guan X, Jin Q, Pan S, Gao L. The acquisition of Mycobacterium tuberculosis infection in village doctors in China: a prospective study. Int J Tuberc Lung Dis 2020; 24:1241-1246. [PMID: 33317666 DOI: 10.5588/ijtld.20.0153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Occupational exposure-related risk of Mycobacterium tuberculosis infection has been reported for village doctors in China. This prospective study aims to estimate the infection acquisition in this key population.METHODS: At baseline, all village doctors registered in Zhongmu County were tested by QuantiFERON®-TB Gold In-Tube (QFT) and QuantiFERON®-TB Gold Plus (QFT-Plus) in parallel. Those negatives for either of the tests were retested to identify conversions at the 2-year follow-up investigation.RESULTS: A total of 367 eligible participants completed the 2-year follow-up survey with frequency of conversion of 5.0% (18/361) for QFT and 6.1% (21/343) for QFT-Plus. The agreement of follow-up results between the tests was 93.2% with a κ coefficient of 0.43 (95%CI 0.20-0.65). Among QFT-Plus convertors, the difference between TB1 and TB2 tubes (TB2-TB1) was significantly increased as compared with baseline results (P = 0.039). Participants from the villages with occurrence of microbiologically confirmed pulmonary TB showed higher frequency of QFT conversions (11.0% vs. 3.2%, P = 0.011) and QFT-Plus conversions (12.3% vs. 4.4%, P = 0.027) than those from the villages without occurrence.CONCLUSION: Our results consistently suggest that capability on occupational protection and M. tuberculosis infection control should be improved in village doctors in China.
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Luo L, Wang Y, Du Y, Dong C, Ma A, Wang T. MOG1 restores the expression and function of SCN5A-p.R104W through sec23a-mediated forward trafficking. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Brugada syndrome (BrS) is an inherited disease which causes fatal arrhythmias and sudden cardiac death. Mutations in SCN5A gene, which encoding cardiac sodium channel (NaV1.5), are the most common genotype of BrS patients. Some SCN5A-related variants were reported to retain NaV1.5 in endoplasmic reticulum (ER) due to trafficking deficiency. MOG1 was previously reported to interact with NaV1.5 and increased sodium current (INa) through enhancing the trafficking. However, its molecular mechanisms are still unclear. Coat protein complex II (COPII) is responsible for the ER to Golgi transport. Sec23 forms the inner coat of COPII and participates in cargo proteins selection.
Purpose
To demonstrate that MOG1 rescues SCN5A-related variants by enhancing the forward trafficking through Sec23a-NaV1.5 interaction.
Methods
Site directed mutagenesis, immunofluorescence staining, biotinylation assay, Western blot analysis and whole-cell patch clamp recording were used. CRISPR/Cas9 was used to knock out Sec23a expression in HEK293 cells.
Results
We found that SCN5A-p.R104W was characterized as reduced NaV1.5 level and lack of INa. The variant SCN5A-p.R104W was mainly distributed in ER. MOG1 could rescue the total and surface expression of SCN5A-p.R104W but could not restore INa (Figure 1a). Considering that most patients are heterozygous, co-transfection of SCN5A-WT and SCN5A-p.R104W were obtained. We found MOG1 could increase both NaV1.5 level and INa of heterozygous expressed SCN5A-p.R104W. We further revealed an interaction between NaV1.5 and Sec23a by co-immunoprecipitation (Co-IP) assay. The interaction between NaV1.5 and Sec23a was increased by MOG1, which indicates that Sec23a participates in MOG1-mediated increase in NaV1.5 level (Figure 1b). Knockout of Sec23a reduced cell surface, but not total, NaV1.5 level (Figure 1c and 1d). Next, the Sec23a knockout HEK293 cells were co-transfected with SCN5A-p.R104W and pcDNA3 or MOG1. MOG1 could not increase SCN5A-p.R104W protein level in Sec23a knockout cells.
Conclusion
Our data demonstrated a novel mechanism that MOG1 restores the expression and function of SCN5A-p.R104W by enhancing its forward trafficking through Sec23a-NaV1.5 interaction.
Figure 1
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Natural Science Foundation of China
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Ahmed A, Cavalcante J, Goessl M, Ukaigwe A, Schmidt C, Du Y, Lopes B, Bae R, Sorajja P. Prevalence and prognosis of mitral disease due to mitral annular calcification. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
While mitral annular calcification (MAC) is associated with valvular regurgitation or stenosis, this disease entity remains poorly understood.
Purpose
We sought to evaluate the prevalence and outcomes of patients with MAC.
Methods
Between January 2014 and December 2015, we reviewed all patients who underwent transthoracic echocardiography (TTE), and were identified as having MAC with either mitral regurgitation (MR) or stenosis (MS). Medical records were manually examined for demographics, morbidities, type and severity of mitral disease, and clinical outcomes for this cohort.
Results
Of 41,136 patients who had undergone TTE, MAC was identified in 2,855 (6.9%) patients, including 434 (1.0%) patients who had significant concomitant MR or MS (mean age, 78.9±10.4 years; 63% women). Severe heart failure (NYHA III or IV, 37%), renal failure (mean GFR, 47.3±15.7 ml/min), aortic stenosis (26% with severe stenosis or prior aortic intervention), diabetes (35%), and atrial fibrillation (50%) were common. The mean mitral gradient was 6.2±3.0 mmHg. Fifty-eight patients (13%) underwent surgical or transcatheter mitral valve intervention, with two procedural deaths (3.4%). Overall, the 3-year survival free of all-cause mortality was 53.9%, while freedom from all-cause mortality, hospitalization for heart failure, myocardial infarction and cerebrovascular accident was only 26.5% (Figure 1). Three-year survival free of all-cause mortality for those who had surgery or transcatheter therapy was better in comparison to those treated medically (77.6% vs. 50.3%; p<0.001).
Conclusions
Patients with MAC with MR or MS are common, have severe co-morbidities, and have poor long-term survival. Further study is needed to improve the clinical outcomes of these patients.
KM curves for MAC and MR/MS patients
Funding Acknowledgement
Type of funding source: None
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Wang X, Li Z, Du Y, Jia L, Fan J, Guo R, Ma X, Nie S, Wei Y. Association of C1q/TNF-related protein-9 (CTRP9) level with obstructive sleep apnea in patients with coronary artery disease. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Obstructive sleep apnea (OSA) is closely related to the incidence and progression of coronary artery disease (CAD), but the mechanisms linking OSA and CAD are unclear. C1q/TNF-related protein-9 (CTRP9) is a novel adipokine that protects the heart against ischemic injury and ameliorates cardiac remodeling.
Purpose
We aimed to ascertain the clinical relevance of CTRP9 with OSA prevalence in patients with CAD.
Methods
From August 2016 to March 2019, consecutive eligible patients with CAD (n=154; angina pectoris, n=88; acute myocardial infarction [AMI], n=66) underwent cardiorespiratory polygraphy during hospitalization. OSA was defined as an apnea-hypopnea index (AHI) ≥15 events h–1. Plasma CTRP9 concentrations were measured by ELISA method.
Results
OSA was present in 89 patients (57.8%). CTRP9 levels were significantly decreased in the OSA group than in the non-OSA group (4.7 [4.1–5.2] ng/mL vs. 4.9 [4.4–6.0] ng/mL, P=0.003). The difference between groups was only observed in patients with AMI (3.0 [2.3–4.9] vs. 4.5 [3.2–7.9], P=0.009), but not in patients with AP (5.0 [4.7–5.3] ng/mL vs. 5.1 [4.7–5.9] ng/mL, P=0.571) (Figure 1). Correlation analysis showed that CTRP9 levels were negatively correlated with AHI (r=−0.238, P=0.003) and oxygen desaturation index (r=−0.234, P=0.004), and positively correlated with left ventricular ejection fraction (r=0.251, P=0.004) in all subjects. Multivariate analysis showed that male gender (OR 3.099, 95% CI 1.029–9.330, P=0.044), body mass index (OR 1.148, 95% CI 1.040–1.268, P=0.006), and CTRP9 levels (OR 0.726, 95% CI 0.592–0.890, P=0.002) were independently associated with the prevalence of OSA.
Conclusions
Plasma CTRP9 levels were independently related to the prevalence of OSA in patients with CAD, suggesting that CTRP9 might play a role in the pathogenesis of CAD exacerbated by OSA.
Figure 1. CTRP9 levels in OSA and non-OAS groups
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): National Natural Science Foundation of China
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Sun G, Peng W, Wang F, Cheng H, Wang S, Xia L, Du Y. 390P A real-world clinical study of camrelizumab in the treatment of esophageal cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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92
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Ma Q, Du Y, Wang J, Wu S, Zhao Y, Zhou Y. Long-term safety and performance of a novel conical bioresorbable vascular scaffold: insights from in-vitro and in-vivo studies. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The phenomenon of size-mismatches between cylindrical stents and tapered vessels is not uncommon in current endovascular interventions which is associated with poor clinical outcomes.
Purpose
The aim of the present study was to evaluate the mechanical properties of the novel conic BRS and to validate its performance with the support of optical coherence tomography (OCT), quantitative coronary angiography (QCA) and histology up to 2 years in a porcine model.
Methods
We produced the conical BRS with the four-axis 3D printing system, with a computer-controlled rotational axis (the 4th axis) in addition to the 3 axes of traditional 3D printing systems.
Mechanical properties were evaluated by recoil and radial strength, cyclic fatigability testing.
Twelve swine that received 12 conic BRS were evaluated by OCT, QCA and histology post-implantation and at 12 and 24 months.
Results
The in vitro study showed no fractures after accelerated cycle testing over time (at 3.8×108 cycles).
The recoil rate of the scaffolds after plate compress test was 14.3±0.61%.
There was no significant peri-operative complications.
By OCT, 60±21 struts per BRS were recognizable by 2 years. Quantitative coronary angiography showed late luminal loss and percent diameter stenosis were 0.02±0.52 mm and 0.50±16.90% at 2-year follow-up.
Histopathological analysis demonstrated mild vessel injuries, inflammatory cell infiltration around struts at 1 and 2 years follow ups.
Conclusions
The conical BRS showed optimal performance and has the potential to improve clinical outcome.
OCT and histological images
Funding Acknowledgement
Type of funding source: None
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Du Y, Zhu J, Chu BF, Yang YP, Zhang SL. MiR-548c-3p suppressed the progression of papillary thyroid carcinoma via inhibition of the HIF1α-mediated VEGF signaling pathway. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2020; 23:6570-6578. [PMID: 31378898 DOI: 10.26355/eurrev_201908_18543] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Papillary thyroid carcinoma (PTC) is the most common type of thyroid malignancy with physiological microRNA (miR) pathomorphological changes. MiR-548c-3p participates in multiple processes of tumor development and progression. However, the role of miR-548c-3p in PTC and the underlying mechanisms remain undefined. Therefore, this study aimed to detect the expression of miR-548c-3p in PTC and to explore its exact function. MATERIALS AND METHODS MiR-548c-3p expression was analyzed in PTC tissue and cell lines by Real-Time fluorescence quantitative Polymerase Chain Reaction. Colony formation and cell viability assay were used to measure cell proliferation. Wound healing assay and transwell invasion assay were conducted to examine cell migration and invasion. The protein expression of the signaling pathways was determined by Western blot analysis. RESULTS Our results indicated that miR-548c-3p was downregulated in PTC tissues and cell lines. Moreover, miR-548c-3p mimics suppressed PTC cell viability, colony formation, cell migration, and invasion capacity. Low expression of miR-548c-3p significantly enhanced N-cadherin and vimentin expression. A negative correlation was determined between miR-548c-3p and hypoxia-inducible factor (HIF) 1α or vascular endothelial growth factor (VEGF) levels, indicating that miR-548c-3p inhibited tumor progression by suppressing the HIF1α-mediated VEGF signaling pathway. CONCLUSIONS MiR-548c-3p could suppress PTC progression by inhibiting the HIF1α-mediated VEGF signaling pathway.
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Yi L, Du Y, Mao C, Li J, Jin M, Sun L, Wang Y. Immunogenicity and protective ability of RpoE against Streptococcus suis serotype 2. J Appl Microbiol 2020; 130:1075-1083. [PMID: 32996241 DOI: 10.1111/jam.14874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 08/13/2020] [Accepted: 09/19/2020] [Indexed: 02/06/2023]
Abstract
AIMS RpoE is quite immunogenic and can be used as a candidate vaccine for Streptococcus suis infection via immunoproteomics as reported in our previous studies. In this study, we aimed to verify the immunogenicity of recombinant RpoE and its protective effect against of S. suis. METHODS AND RESULTS The RpoE protein was successfully expressed in Escherichia coli, and the purified recombinant protein was mixed with ISA206 to prepare an S. suis subunit vaccine. Mice were immunized with the RpoE subunit vaccine and then infected with the virulent S. suis strain ZY05719. Subunit vaccine-immunized mice achieved 50% protection, less pathological damage and less bacterial distribution in each organ compared with the control mice. Furthermore, in vitro culture, showed that mouse antisera significantly (P < 0·001) inhibited the growth of S. suis, and qRT-PCR results showed that RpoE successfully induced the up-regulation of IL-6 and TNF-α cytokines. CONCLUSIONS RpoE mice were vaccinated to obtain immune protection, which may be candidates for S. suis subunit vaccine. SIGNIFICANCE AND IMPACT OF THE STUDY The results of this study will provide new ideas for the development of safe and effective recombinant subunits vaccines for S. suis.
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Shi X, Gao Y, Song L, Zhao P, Zhang Y, Ding Y, Sun R, Du Y, Gong M, Gao Q, Shi Y, Guo Q, Shi H. Sulfur dioxide derivatives produce antidepressant- and anxiolytic-like effects in mice. Neuropharmacology 2020; 176:108252. [PMID: 32712276 DOI: 10.1016/j.neuropharm.2020.108252] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 07/18/2020] [Accepted: 07/20/2020] [Indexed: 12/22/2022]
Abstract
Sulfur dioxide (SO2) can be endogenously generated from sulfur-containing amino acids in animals and humans. Increasing evidence shows that endogenous SO2 may act as a gaseous molecule to participate in many physiological and pathological processes. However, the role of SO2 and its derivatives in the central nervous system remains poorly understood. The present study explored the protective effects of exogenous SO2 derivatives (Na2SO3:NaHSO3, 3:1 M/M) on cellular injury in vitro by using the cell proliferation assay (MTS), cell counting kit 8 assay (CCK-8), and cyto-flow assay in the corticosterone (CORT)-induced PC12 cell injury model. We also examined the antidepressant and anxiolytic effects of SO2 derivatives on the chronic mild stress (CMS)-induced depression mouse model by using the open field test, novelty suppressed feeding test, forced swimming test, tail suspension test, and sucrose preference test. In the MTS and CCK-8 assays, we found that preexposure of SO2 derivatives significantly blocked CORT-induced decrease of cellular survival without causing any negative effects. Results from the cyto-flow assay indicated that treatment with SO2 derivatives could reverse CORT-induced early and late apoptosis of PC12 cells. Systemic treatment with SO2 derivatives produced markedly antidepressant- and anxiolytic-like activities in mice under normal condition and rapidly reversed CMS-induced depressive- and anxiety-like behaviors. In conclusion, these findings indicate that exogenous SO2 derivatives show protective properties against the detrimental effects of stress and exert antidepressant- and anxiolytic-like actions. The present study suggests that exogenous SO2 derivatives are potential therapeutic agents for the treatment of depression, anxiety, and other stress-related diseases.
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Baumert J, Schmid GL, Du Y, Paprott R, Carmienke S, Stühmann LM, Frese T, Heidemann C, Scheidt-Nave C. Patient-assessed quality of care in type 2 diabetes in a German nationwide health survey 2017. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Patient-assessed quality of chronic illness care is important to guide medical care for patients with diabetes and other complex chronic diseases, but information from epidemiological studies is scarce. Thus, we examined self-assessed quality of care among adults with type 2 diabetes (T2D) based on a population-based design.
Methods
The study population was drawn from a nationwide survey on diabetes-related knowledge and information needs conducted in Germany in 2017 and included participants aged ≥18 years with known type 2 diabetes (T2D) in the last 12 months (n = 1,328). A German short version of the “Patient assessment of chronic illness care (PACIC-DSF)” consisting of 9 items based on 5-point Likert scale was applied to assess self-reported quality of care in diabetes which was operationalized by a standardized PACIC sum score ranging from 1 to 5. Linear regression with different stages of adjustment was applied to assess the association of basic characteristics and diabetes-related factors with the PACIC score.
Results
Quality of care was assessed less favorably by women than by men (PACIC score: 2.38 vs. 2.47) overall and decreased along with age. The PACIC score significantly increased in participants with insulin use (β = 0.16, p = 0.024), ever participating in a diabetes education program (β = 0.33, p < 0.001), following a diet plan at least once a week (β = 0.33, p < =0.001) as well as performing daily self-examination of feet (β = 0.14, p = 0.023), self-control of blood glucose (β = 0.34, p < 0.001), and being physically active for at least 30 min (β = 0.21, p < 0.001) compared to participants without the respective trait.
Conclusions
Self-assessed quality of care by adults with known T2D from this population-based study is moderate and seems lower compared to findings from clinical studies.
Key messages
An active involvement of people with type 2 diabetes into the implementation of care is essential and may contribute to improved self-perceived quality of care. To identify and overcome obstacles in diabetes care based on the patient’s perspective remains a public health challenge.
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Baumert J, von der Lippe E, Paprott R, Du Y, Reitzle L, Heidemann C, Schmidt C, Scheidt-Nave C. Life expectancy and healthy life years associated with diabetes in Germany. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
While life expectancy (LE) is rising, years lived with severe health impairments especially due to chronic diseases also increase. Diabetes is one of the major chronic diseases with high potential for co-morbidity and premature deaths needing life-long care. Therefore, information about loss in LE and healthy life years (HLY) in people with diabetes compared to people without diabetes is essential for assessing the burden of diabetes.
Methods
Data on all-cause mortality rates for the general population of Germany in 2014 was drawn from the Federal Statistical Office; mortality rate ratios for people with diabetes compared to people without diabetes were based on claims data from about 70 million people covered by statutory health insurances in 2014. Data of three nationwide health telephone surveys conducted among adults in Germany 2009-2012 (n ∼ 60,000) were used to assess severe health impairments defined as self-reported limitations in daily activities due to diseases for at least six months in people with and without diabetes. Based on these figures, estimates on LE and HLY could be calculated by sex and 5-year age-groups for people with and without diabetes aged ≥ 30 years.
Results
In both sexes and in all 5-year age-groups, LE and HLY were substantially lower for people with than for people without diabetes. For example, among women in the age group 30-34 years, LE and HLY estimates were 48.0 and 36.4 years for those with diabetes compared to 54.9 and 47.6 years for those without diabetes; in men, these figures were estimated as 42.6 and 32.4 years for those with diabetes compared to 50.3 and 44.1 years for those without diabetes. Differences in LE and HLY between people with and without diabetes attenuated with increasing age.
Conclusions
The present study revealed substantial reductions in LE and HLY related to diabetes and underlines the importance of integrating both figures in a national diabetes surveillance.
Key messages
There are substantial differences in life expectancy and healthy life years between people with and without diabetes. Specific intervention and prevention activities should be implemented to tackle disability in persons with diabetes.
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Vaishampayan U, Muzaffar J, Velcheti V, Winer I, Hoimes C, Rosen S, Spreafico A, McDermott D, Chu QC, Dumas O, Gilbert L, Hirte H, Curtis K, Du Y, Bidollari I, Sun L, Putiri E, Losey H, Dezube B, Ernstoff M. 1027MO ALKS 4230 monotherapy and in combination with pembrolizumab (pembro) in patients (pts) with refractory solid tumours (ARTISTRY-1). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1147] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Reitzle L, Paprott R, Heidemann C, Schmidt C, Baumert J, Färber F, Du Y, Scheidt-Nave C, Ziese T. Towards NCD surveillance in Germany – diabetes as a paradigm. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Non-communicable diseases (NCD) are a major public health challenge in Germany and throughout the world. The epidemiology of diabetes, in particular type 2 diabetes, exemplifies the need for effective prevention and control. To support policy making with actionable evidence, the Robert Koch Institute (RKI) is developing a diabetes surveillance system for Germany serving as model for NCD surveillance.
Methods
First, we consented a conceptual framework and key indicators among experts and stakeholders based on an extensive literature review including national and international NCD surveillance systems. After prioritization of indicators applying a two-step Delphi method, we identified data sources for sustainable surveillance including data from nationwide RKI health surveys as well as external data such as claims or registry data. Lastly, in cooperation with stakeholders we developed first dissemination products.
Results
During concept phase, we identified 40 indicators ranging from risk factors, disease incidence and prevalence to quality of care, mortality and burden of disease. During implementation, suitable data sources and results on temporal trends have been obtained for a large part of the indicators. For dissemination we developed a website with interactive visualization of results supported by an explainer video on YouTube. Additionally, we prepared a printed diabetes report summarizing and interpreting key findings for a broader audience, including health politicians and public health researchers.
Conclusions
We demonstrated the feasibility of the systematic collection and analysis of health data to describe the disease and care situation of diabetes in Germany. The methodology and data sources of indicators can be transferred to further NCDs and shared risk factors are already depicted. Next steps are to close remaining data gaps and to advance dissemination products in collaboration with our stakeholder network tailored to their information needs.
Key messages
Considering available health data, we showed the feasibility of implementing a diabetes surveillance system for Germany providing reliable information on disease dynamics for various stakeholders. The knowledge on methodology and data sources gained establishing a diabetes surveillance system can be extended to other noncommunicable diseases.
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Zhang FB, Du Y, Tian Y, Ji ZG, Yang PQ. MiR-1299 functions as a tumor suppressor to inhibit the proliferation and metastasis of prostate cancer by targeting NEK2. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2020; 23:530-538. [PMID: 30720160 DOI: 10.26355/eurrev_201901_16865] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the inhibitory role of microRNA-1299 (miR-1299) in prostate cancer, and to explore the possible underlying mechanism. PATIENTS AND METHODS The expression of miR-1299 in 35 PCa tissues and para-carcinoma tissues, as well as PCa cell lines (PC-3) and prostatic epithelial cell line (RWPE-1), was detected by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR). Then, we explored the possible targets of miR-1299 by searching online databases. NIMA-related kinase 2 (NEK2) was identified as a direct target gene of miR-1299. Subsequently, qRT-PCR, Western blot (WB), and luciferase reporter gene assay were used to further verify the correlation between miR-1299 and NEK2. To better characterize the role of miR-1299 and NEK2 in PCa, we conducted functional experiments (MTT, flow cytometry, scratch-wound, and transwell assay) by transfecting PC-3 cells with miR-1299 mimics and si-NEK2 in different groups. RESULTS The expression level of miR-1299 in PCa tissues was significantly lower than that of para-carcinoma tissues. Meanwhile, the expression of miR-1299 in PC-3 cells was also significantly downregulated when compared with RWPE-1 cells. Subsequent qRT-PCR, WB, and luciferase reporter gene assay verified that miR-1299 transcriptionally repressed NEK2 by interacting with the essential binding sequence in 3'-UTR. Also, functional experiments demonstrated that decreased expression of NEK2 resulting from miR-1299 up-regulation could remarkably inhibit the proliferation, invasion, and migration of PCa cells. CONCLUSIONS Our study indicated that miR-1299 was a novel suppressor in PCa through its negative regulation of NEK2. Moreover, our findings revealed that miR-1299/NEK2 axis might be a potential therapeutic target for the treatment of PCa.
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