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Feng J, Zhong H, Mei S, Tang R, Zhou Y, Xing S, Gao Y, Xu Q, He Z. LPS-induced monocarboxylate transporter-1 inhibition facilitates lactate accumulation triggering epithelial-mesenchymal transformation and pulmonary fibrosis. Cell Mol Life Sci 2024; 81:206. [PMID: 38709307 DOI: 10.1007/s00018-024-05242-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 04/02/2024] [Accepted: 04/17/2024] [Indexed: 05/07/2024]
Abstract
The epithelial-mesenchymal transformation (EMT) process of alveolar epithelial cells is recognized as involved in the development of pulmonary fibrosis. Recent evidence has shown that lipopolysaccharide (LPS)-induced aerobic glycolysis of lung tissue and elevated lactate concentration are associated with the pathogenesis of sepsis-associated pulmonary fibrosis. However, it is uncertain whether LPS promotes the development of sepsis-associated pulmonary fibrosis by promoting lactate accumulation in lung tissue, thereby initiating EMT process. We hypothesized that monocarboxylate transporter-1 (MCT1), as the main protein for lactate transport, may be crucial in the pathogenic process of sepsis-associated pulmonary fibrosis. We found that high concentrations of lactate induced EMT while moderate concentrations did not. Besides, we demonstrated that MCT1 inhibition enhanced EMT process in MLE-12 cells, while MCT1 upregulation could reverse lactate-induced EMT. LPS could promote EMT in MLE-12 cells through MCT1 inhibition and lactate accumulation, while this could be alleviated by upregulating the expression of MCT1. In addition, the overexpression of MCT1 prevented LPS-induced EMT and pulmonary fibrosis in vivo. Altogether, this study revealed that LPS could inhibit the expression of MCT1 in mouse alveolar epithelial cells and cause lactate transport disorder, which leads to lactate accumulation, and ultimately promotes the process of EMT and lung fibrosis.
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Affiliation(s)
- Jinhua Feng
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China
| | - Han Zhong
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China
| | - Shuya Mei
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China
| | - Ri Tang
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China
| | - Yang Zhou
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China
| | - Shunpeng Xing
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China
| | - Yuan Gao
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China
| | - Qiaoyi Xu
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China.
| | - Zhengyu He
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, Shanghai, 200127, China.
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Feng J, Huang X, Xu Q, Tang R, Zhou Y, Qin S, Xing S, Gao Y, Mei S, He Z. Pharmacological inhibition of the ACE/Ang-2/AT1 axis alleviates mechanical ventilation-induced pulmonary fibrosis. Int Immunopharmacol 2024; 131:111855. [PMID: 38493697 DOI: 10.1016/j.intimp.2024.111855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/22/2024] [Accepted: 03/10/2024] [Indexed: 03/19/2024]
Abstract
Mechanical ventilation (MV) is an essential therapy for acute respiratory distress syndrome (ARDS) and pulmonary fibrosis. However, it can also induce mechanical ventilation-induced pulmonary fibrosis (MVPF) and the underlying mechanism remains unknown. Based on a mouse model of MVPF, the present study aimed to explore the role of the angiotensin-converting enzyme/angiotensin II/angiotensin type 1 receptor (ACE/Ang-2/AT1R) axis in the process of MVPF. In addition, recombinant angiotensin-converting enzyme 2(rACE2), AT1R inhibitor valsartan, AGTR1-directed shRNA and ACE inhibitor perindopril were applied to verify the effect of inhibiting ACE/Ang-2/AT1R axis in the treatment of MVPF. Our study found MV induced an inflammatory reaction and collagen deposition in mouse lung tissue accompanied by the activation of ACE in lung tissue, increased concentration of Ang-2 in bronchoalveolar lavage fluid (BALF), and upregulation of AT1R in alveolar epithelial cells. The process of pulmonary fibrosis could be alleviated by the application of the ACE inhibitor perindopril, ATIR inhibitor valsartan and AGTR1-directed shRNA. Meanwhile, rACE2 could also alleviate MVPF through the degradation of Ang-2. Our finding indicated the ACE/Ang-2/AT1R axis played an essential role in the pathogenesis of MVPF. Pharmacological inhibition of the ACE/Ang-2/AT1R axis might be a promising strategy for the treatment of MVPF.
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Affiliation(s)
- Jinhua Feng
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Xi Huang
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Qiaoyi Xu
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Ri Tang
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yang Zhou
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Shaojie Qin
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Shunpeng Xing
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Yuan Gao
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Shuya Mei
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
| | - Zhengyu He
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.
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Zhuang M, Chen H, Li Y, Mei S, Liu J, Du B, Wang X, Wang X, Tang J. Laparoscopic posterior pelvic exenteration is safe and feasible for locally advanced primary rectal cancer in female patients: a comparative study from China PelvEx collaborative. Tech Coloproctol 2023; 27:1109-1117. [PMID: 37243857 DOI: 10.1007/s10151-023-02824-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/08/2023] [Indexed: 05/29/2023]
Abstract
PURPOSE Posterior pelvic exenteration (PPE) for locally advanced rectal cancer is a technical and challenging procedure. The safety and feasibility of laparoscopic PPE remain to be determined. This study aims to compare short-term and survival outcomes of laparoscopic PPE (LPPE) with open PPE (OPPE) in female patients. METHOD From January 2015 to December 2020, data from 105 female patients who underwent PPE at three institutions were retrospectively analyzed. The short-term and oncological outcomes between LPPE and OPPE were compared. RESULTS A total of 54 cases with LPPE and 51 cases with OPPE were enrolled. The operative time (240 vs. 295 min, p = 0.009), blood loss (100 vs. 300 ml, p < 0.001), surgical site infection (SSI) rate (20.4% vs. 58.8%, p = 0.003), urinary retention rate (3.7% vs. 17.6%, p = 0.020), and postoperative hospital stay (10 vs. 13 days, p = 0.009) were significantly lower in the LPPE group. The two groups showed no significant differences in the local recurrence rate (p = 0.296), 3-year overall survival (p = 0.129), or 3-year disease-free survival (p = 0.082). A higher CEA level (HR 1.02, p = 0.002), poor tumor differentiation (HR 3.05, p = 0.004), and (y)pT4b stage (HR 2.35, p = 0.035) were independent risk factors for disease-free survival. CONCLUSION LPPE is safe and feasible for locally advanced rectal cancers and shows lower operative time and blood loss, fewer SSI complications, and better preservation of bladder function without compromising oncological outcomes.
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Affiliation(s)
- M Zhuang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - H Chen
- Department of General Surgery, Tianjin Fifth Central Hospital, Tianjin, 300450, China
| | - Y Li
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - S Mei
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - J Liu
- Department of General Surgery, Peking University First Hospital, Beijing, 100034, China
| | - B Du
- Department of Colorectal Surgery, Gansu Provincial Hospital, Lanzhou, 730000, China
| | - X Wang
- Department of General Surgery, Peking University First Hospital, Beijing, 100034, China
| | - Xishan Wang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
| | - J Tang
- Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
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Tang R, Feng J, Mei S, Xu Q, Zhou Y, Xing S, Gao Y, He Z, Zhang Z. [Research on the mechanism of mechanical ventilation induced endoplasmic reticulum stress promoting mechanical ventilation-induced pulmonary fibrosis]. Zhonghua Wei Zhong Bing Ji Jiu Yi Xue 2023; 35:1171-1176. [PMID: 37987127 DOI: 10.3760/cma.j.cn121430-20230616-00450] [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: 11/22/2023]
Abstract
OBJECTIVE To demonstrate the mechanism of mechanical ventilation (MV) induced endoplasmic reticulum stress (ERS) promoting mechanical ventilation-induced pulmonary fibrosis (MVPF), and to clarify the role of angiotensin receptor 1 (AT1R) during the process. METHODS The C57BL/6 mice were randomly divided into four groups: Sham group, MV group, AT1R-shRNA group and MV+AT1R-shRNA group, with 6 mice in each group. The MV group and MV+AT1R-shRNA group mechanically ventilated for 2 hours after endotracheal intubation to establish MVPF animal model (parameter settings: respiratory rate 70 times/minutes, tidal volume 20 mL/kg, inhated oxygen concentration 0.21). The Sham group and AT1R-shRNA group only underwent intubation after anesthesia and maintained spontaneous breathing. AT1R-shRNA group and MV+AT1R-shRNA group were airway injected with the adeno-associated virus one month before modeling to inhibit AT1R gene expression in lung tissue. The expressions of AT1R, ERS signature proteins [immunoglobulin heavy chain-binding protein (BIP), protein disulfide isomerase (PDI)], fibrosis signature proteins [collagen I (COL1A1), α-smooth muscle actin (α-SMA)] in lung tissues were detected by immunofluorescence and Western blotting. Hematoxylin-eosin (HE) staining was used to evaluate lung injury and Masson staining was used to evaluate pulmonary fibrosis. RESULTS Compared with the Sham group, the degree of pulmonary fibrosis and lung injury were more significant in the MV group. In the MV group, the protein expressions of AT1R, BIP, PDI, COL1A1 and α-SMA were increased (AT1R/β-actin: 1.40±0.02 vs. 1, BIP/β-actin: 2.79±0.07 vs. 1, PDI/β-actin: 2.07±0.02 vs. 1, COL1A1/α-Tubulin: 2.60±0.15 vs. 1, α-SMA/α-Tubulin: 2.80±0.25 vs. 1, all P < 0.01). The number of E-cad+/AT1R+ and E-cad+/BIP+ cells in lung tissue increased, and the fluorescence intensity of COL1A1 and α-SMA increased. Compared with the MV group, the degree of pulmonary fibrosis and lung injury were significantly relieved in the MV+AT1R-shRNA group. In the MV+AT1R-shRNA group, the protein expressions of AT1R, BIP, PDI, COL1A1 and α-SMA were decreased (AT1R/β-actin: 0.53±0.03 vs. 1.40±0.02, BIP/β-actin: 1.73±0.15 vs. 2.79±0.07, PDI/β-actin: 1.04±0.07 vs. 2.07±0.02, COL1A1/α-Tubulin: 1.29±0.11 vs. 2.60±0.15, α-SMA/α-Tubulin: 1.27±0.10 vs. 2.80±0.25, all P < 0.01). The number of E-cad+/AT1R+ and E-cad+/BIP+ cells in lung tissue decreased, and the fluorescence intensity of COL1A1 and α-SMA decreased. There was no statistically significant difference in the indicators between AT1R-shRNA group and Sham group. CONCLUSIONS MV up-regulate the expression of AT1R in alveolar epithelial cells, activate the AT1R pathway, induce ERS and promote the progression of MVPF.
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Affiliation(s)
- Ri Tang
- Department of Critical Care Medicine, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China. Corresponding author: Zhang Zhiyun,
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Li H, Zhang B, Shi Z, Wu H, Mei S, Ai T, Shi A, Wang L, Zhu M, Tang J. Derivation of induced pluripotent stem cell SJTUi003-A from a 69-year-old Chinese Han Sporadic Alzheimer's disease patient with APOEε3/ε4 genetic background. Stem Cell Res 2023; 71:103142. [PMID: 37343430 DOI: 10.1016/j.scr.2023.103142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/08/2023] [Accepted: 06/10/2023] [Indexed: 06/23/2023] Open
Abstract
Alzheimer's disease (AD) is an age-related and progressive neurodegenerative disease. In this study, we generated an induced pluripotent stem cell (iPSC) line from the dermal fibroblasts of a 69-year-old female patient carrying APOEε3/ε4 allele and diagnosed with sporadic AD. The iPSC line will be a useful tool for investigating the pathogenesis mechanisms and for drug tests in AD.
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Affiliation(s)
- Hui Li
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China
| | - Bei Zhang
- Department of Neurology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200092, China.
| | - Zhiqiang Shi
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China
| | - Hui Wu
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China
| | - Shuya Mei
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China
| | - Tianyi Ai
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China
| | - An Shi
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China
| | - Lihui Wang
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China
| | - Mingli Zhu
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China.
| | - Jiajia Tang
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No.1630 Dongfang Road, Shanghai 200127, China.
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Tang R, Zhou Y, Mei S, Xu Q, Feng J, Xing S, Gao Y, Qin S, He Z. Fibrotic extracellular vesicles contribute to mechanical ventilation-induced pulmonary fibrosis development by activating lung fibroblasts via JNK signalling pathway: an experimental study. BMJ Open Respir Res 2023; 10:e001753. [PMID: 37620111 PMCID: PMC10450055 DOI: 10.1136/bmjresp-2023-001753] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/31/2023] [Indexed: 08/26/2023] Open
Abstract
Recent research has revealed that mechanical ventilation (MV) could initiate ventilator-induced lung injury along with the initiation of the process of pulmonary fibrosis (PF), leading to MV-induced PF (MVPF). However, the underlying mechanism remains unclear. This study aimed to explore the role of MV-induced extracellular vesicles (MV-EVs) and the c-Jun N-terminal kinase (JNK) signalling pathway in the pathogenesis of MVPF in vivo and in vitro. The process of MV is accompanied by the secretion of MV-EVs, which could induce lung fibroblast activation. Furthermore, single-cell RNA-sequencing analysis revealed that the JNK pathway in lung fibroblasts was activated after MV initiation. Inhibiting the JNK pathway could both restrain MV-EV-induced lung fibroblast activation in vitro or reduce the severity of MVPF in vivo. In conclusion, this study demonstrated that MV-EVs contribute to MVPF progression by activating lung fibroblasts via the JNK signalling pathway and that inhibiting the secretion of EV and the activation of the JNK signalling pathway is a promising strategy for treating MVPF.
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Affiliation(s)
- Ri Tang
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang Zhou
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuya Mei
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiaoyi Xu
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinhua Feng
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shunpeng Xing
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuan Gao
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shaojie Qin
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhengyu He
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Zhou Y, Feng J, Mei S, Tang R, Xing S, Qin S, Zhang Z, Xu Q, Gao Y, He Z. A deep learning model for predicting COVID-19 ARDS in critically ill patients. Front Med (Lausanne) 2023; 10:1221711. [PMID: 37564041 PMCID: PMC10411521 DOI: 10.3389/fmed.2023.1221711] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 07/06/2023] [Indexed: 08/12/2023] Open
Abstract
Background The coronavirus disease 2019 (COVID-19) is an acute infectious pneumonia caused by a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection previously unknown to humans. However, predictive studies of acute respiratory distress syndrome (ARDS) in patients with COVID-19 are limited. In this study, we attempted to establish predictive models to predict ARDS caused by COVID-19 via a thorough analysis of patients' clinical data and CT images. Method The data of included patients were retrospectively collected from the intensive care unit in our hospital from April 2022 to June 2022. The primary outcome was the development of ARDS after ICU admission. We first established two individual predictive models based on extreme gradient boosting (XGBoost) and convolutional neural network (CNN), respectively; then, an integrated model was developed by combining the two individual models. The performance of all the predictive models was evaluated using the area under receiver operating characteristic curve (AUC), confusion matrix, and calibration plot. Results A total of 103 critically ill COVID-19 patients were included in this research, of which 23 patients (22.3%) developed ARDS after admission; five predictive variables were selected and further used to establish the machine learning models, and the XGBoost model yielded the most accurate predictions with the highest AUC (0.94, 95% CI: 0.91-0.96). The AUC of the CT-based convolutional neural network predictive model and the integrated model was 0.96 (95% CI: 0.93-0.98) and 0.97 (95% CI: 0.95-0.99), respectively. Conclusion An integrated deep learning model could be used to predict COVID-19 ARDS in critically ill patients.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Yuan Gao
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Zhengyu He
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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Tang R, Hu Y, Mei S, Zhou Y, Feng J, Jin T, Dai B, Xing S, Gao Y, Xu Q, He Z. Non-coding RNA alterations in extracellular vesicles from bronchoalveolar lavage fluid contribute to mechanical ventilation-induced pulmonary fibrosis. Front Immunol 2023; 14:1141761. [PMID: 36993978 PMCID: PMC10040560 DOI: 10.3389/fimmu.2023.1141761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/23/2023] [Indexed: 03/18/2023] Open
Abstract
ObjectiveFor respiratory failure patients, mechanical ventilation (MV) is a life-saving therapy to maintain respiratory function. However, MV could also cause damage to pulmonary structures, result in ventilator-induced lung injury (VILI) and eventually progress to mechanical ventilation-induced pulmonary fibrosis (MVPF). Mechanically ventilated patients with MVPF are closely related to increased mortality and poor quality of life in long-term survival. Thus, a thorough understanding of the involved mechanism is necessary.MethodsWe used next-generation sequencing to identify differentially expressed non-coding RNAs (ncRNAs) in BALF EVs which were isolated from Sham and MV mice. Bioinformatics analysis was conducted to identify the engaged ncRNAs and related signaling pathways in the process of MVPF.ResultsWe found 1801 messenger RNAs (mRNA), 53 micro RNAs (miRNA), 273 circular RNAs (circRNA) and 552 long non-coding RNAs (lncRNA) in mice BALF EVs of two groups, which showed significant differential expression. TargetScan predicted that 53 differentially expressed miRNAs targeted 3105 mRNAs. MiRanda revealed that 273 differentially expressed circRNAs were associated with 241 mRNAs while 552 differentially expressed lncRNAs were predicated to target 20528 mRNAs. GO, KEGG pathway analysis and KOG classification showed that these differentially expressed ncRNA-targeted mRNAs were enriched in fibrosis related signaling pathways and biological processes. By taking the intersection of miRNAs target genes, circRNAs target genes and lncRNAs target genes, we found 24 common key genes and 6 downregulated genes were confirmed by qRT-PCR.ConclusionsChanges in BALF-EV ncRNAs may contribute to MVPF. Identification of key target genes involved in the pathogenesis of MVPF could lead to interventions that slow or reverse fibrosis progression.
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Affiliation(s)
- Ri Tang
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue Hu
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuya Mei
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang Zhou
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinhua Feng
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tao Jin
- Shanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Bo Dai
- Shanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Shunpeng Xing
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuan Gao
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiaoyi Xu
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Qiaoyi Xu, ; Zhengyu He,
| | - Zhengyu He
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Qiaoyi Xu, ; Zhengyu He,
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Zhou Y, Feng J, Mei S, Zhong H, Tang R, Xing S, Gao Y, Xu Q, He Z. MACHINE LEARNING MODELS FOR PREDICTING ACUTE KIDNEY INJURY IN PATIENTS WITH SEPSIS-ASSOCIATED ACUTE RESPIRATORY DISTRESS SYNDROME. Shock 2023; 59:352-359. [PMID: 36625493 DOI: 10.1097/shk.0000000000002065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
ABSTRACT Background: Acute kidney injury (AKI) is a prevalent and serious complication among patients with sepsis-associated acute respiratory distress syndrome (ARDS). Prompt and accurate prediction of AKI has an important role in timely intervention, ultimately improving the patients' survival rate. This study aimed to establish machine learning models to predict AKI via thorough analysis of data derived from electronic medical records. Method: The data of eligible patients were retrospectively collected from the Medical Information Mart for Intensive Care III database from 2001 to 2012. The primary outcome was the development of AKI within 48 hours after intensive care unit admission. Four different machine learning models were established based on logistic regression, support vector machine, random forest, and extreme gradient boosting (XGBoost). The performance of all predictive models was evaluated using the area under receiver operating characteristic curve, precision-recall curve, confusion matrix, and calibration plot. Moreover, the discrimination ability of the machine learning models was compared with that of the Sequential Organ Failure Assessment (SOFA) model. Results; Among 1,085 sepsis-associated ARDS patients included in this research, 375 patients (34.6%) developed AKI within 48 hours after intensive care unit admission. Twelve predictive variables were selected and further used to establish the machine learning models. The XGBoost model yielded the most accurate predictions with the highest area under receiver operating characteristic curve (0.86) and accuracy (0.81). In addition, a novel shiny application based on the XGBoost model was established to predict the probability of developing AKI among patients with sepsis-associated ARDS. Conclusions: Machine learning models could be used for predicting AKI in patients with sepsis-associated ARDS. Accordingly, a user-friendly shiny application based on the XGBoost model with reliable predictive performance was released online to predict the probability of developing AKI among patients with sepsis-associated ARDS.
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Affiliation(s)
- Yang Zhou
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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Cao Z, Gao W, Bao H, Feng H, Mei S, Chen P, Gao Y, Cui Z, Zhang Q, Meng X, Gui H, Wang W, Jiang Y, Song Z, Shi Y, Sun J, Zhang Y, Xie Q, Xu Y, Ning G, Gao Y, Zhao R. VV116 versus Nirmatrelvir-Ritonavir for Oral Treatment of Covid-19. N Engl J Med 2023; 388:406-417. [PMID: 36577095 PMCID: PMC9812289 DOI: 10.1056/nejmoa2208822] [Citation(s) in RCA: 83] [Impact Index Per Article: 83.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Nirmatrelvir-ritonavir has been authorized for emergency use by many countries for the treatment of coronavirus disease 2019 (Covid-19). However, the supply falls short of the global demand, which creates a need for more options. VV116 is an oral antiviral agent with potent activity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). METHODS We conducted a phase 3, noninferiority, observer-blinded, randomized trial during the outbreak caused by the B.1.1.529 (omicron) variant of SARS-CoV-2. Symptomatic adults with mild-to-moderate Covid-19 with a high risk of progression were assigned to receive a 5-day course of either VV116 or nirmatrelvir-ritonavir. The primary end point was the time to sustained clinical recovery through day 28. Sustained clinical recovery was defined as the alleviation of all Covid-19-related target symptoms to a total score of 0 or 1 for the sum of each symptom (on a scale from 0 to 3, with higher scores indicating greater severity; total scores on the 11-item scale range from 0 to 33) for 2 consecutive days. A lower boundary of the two-sided 95% confidence interval for the hazard ratio of more than 0.8 was considered to indicate noninferiority (with a hazard ratio of >1 indicating a shorter time to sustained clinical recovery with VV116 than with nirmatrelvir-ritonavir). RESULTS A total of 822 participants underwent randomization, and 771 received VV116 (384 participants) or nirmatrelvir-ritonavir (387 participants). The noninferiority of VV116 to nirmatrelvir-ritonavir with respect to the time to sustained clinical recovery was established in the primary analysis (hazard ratio, 1.17; 95% confidence interval [CI], 1.01 to 1.35) and was maintained in the final analysis (median, 4 days with VV116 and 5 days with nirmatrelvir-ritonavir; hazard ratio, 1.17; 95% CI, 1.02 to 1.36). In the final analysis, the time to sustained symptom resolution (score of 0 for each of the 11 Covid-19-related target symptoms for 2 consecutive days) and to a first negative SARS-CoV-2 test did not differ substantially between the two groups. No participants in either group had died or had had progression to severe Covid-19 by day 28. The incidence of adverse events was lower in the VV116 group than in the nirmatrelvir-ritonavir group (67.4% vs. 77.3%). CONCLUSIONS Among adults with mild-to-moderate Covid-19 who were at risk for progression, VV116 was noninferior to nirmatrelvir-ritonavir with respect to the time to sustained clinical recovery, with fewer safety concerns. (Funded by Vigonvita Life Sciences and others; ClinicalTrials.gov number, NCT05341609; Chinese Clinical Trial Registry number, ChiCTR2200057856.).
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Affiliation(s)
- Zhujun Cao
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Weiyi Gao
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Hong Bao
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Haiyan Feng
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Shuya Mei
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Peizhan Chen
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Yueqiu Gao
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Zhilei Cui
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Qin Zhang
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Xianmin Meng
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Honglian Gui
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Weijing Wang
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Yimei Jiang
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Zijia Song
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Yiqing Shi
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Jing Sun
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Yifei Zhang
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Qing Xie
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Yiping Xu
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Guang Ning
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Yuan Gao
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
| | - Ren Zhao
- From the Department of Infectious Diseases, Shanghai Institute of Virology (Z. Cao, H.G., W.W., Q.X.), the Department of Emergency Medicine, Shanghai Innovation Center for Digital Medicine (W.G.), the Clinical Research Center, Shanghai National Center for Translational Medicine, State Key Laboratory of Medical Genomics (P.C., Y.X.), the Departments of General Surgery (Y.J., Z.S., Y.S., R.Z.) and Gastroenterology (J.S.), the Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (Y.Z., G.N.), and Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People's Republic of China, Shanghai Key Laboratory for Endocrine Tumors (Y.Z., G.N.), Ruijin Hospital, the Department of Critical Care Medicine, Renji Hospital (S.M., Yuan Gao), the Department of Respiratory Medicine, Xinhua Hospital (Z. Cui), and the Department of Good Clinical Practice Office and Phase I Unit, Tongren Hospital (Q.Z.), Shanghai Jiao Tong University School of Medicine, the Department of Respiratory and Critical Medicine, Shanghai Pudong Hospital, Fudan University Pudong Medical Center (H.B.), the Departments of Pain Rehabilitation (H.F.) and Pharmacology (X.M.), Shanghai Public Health Clinical Center, Fudan University, and the Department of Liver Disease, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (Yueqiu Gao) - all in Shanghai, China
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Mei S, Tang R, Hu Y, Feng J, Xu Q, Zhou Y, Zhong H, Gao Y, He Z, Xing S. Integrin β3 Mediates Sepsis and Mechanical Ventilation-Associated Pulmonary Fibrosis Through Glycometabolic Reprogramming. J Transl Med 2023; 103:100021. [PMID: 36748196 DOI: 10.1016/j.labinv.2022.100021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 09/18/2022] [Accepted: 10/17/2022] [Indexed: 01/18/2023] Open
Abstract
Mechanical ventilation (MV) has become a clinical first-line treatment option for patients with respiratory failure. However, it was unclear whether MV further aggravates the process of sepsis-associated pulmonary fibrosis and eventually leads to sepsis and mechanical ventilation-associated pulmonary fibrosis (S-MVPF). This study aimed to explore the mechanism of S-MVPF concerning integrin β3 activation in glycometabolic reprogramming of lung fibroblasts. We found that MV exacerbated sepsis-associated pulmonary fibrosis induced by lipopolysaccharide, which was accompanied by proliferation of lung fibroblasts, increased deposition of collagen in lung tissue, and increased procollagen type I carboxy-terminal propeptide in the bronchoalveolar lavage fluid. A large number of integrin β3- and pyruvate kinase M2-positive fibroblasts were detected in lung tissue after stimulation with lipopolysaccharide and MV, with an increase in lactate dehydrogenase A expression and lactate levels. S-MVPF was primarily attenuated in integrin β3-knockout mice, which also resulted in a decrease in the levels of pyruvate kinase M2, lactate dehydrogenase A, and lactate. In conclusion, MV aggravated sepsis-associated pulmonary fibrosis, with glycometabolic reprogramming mediated by integrin β3 activation. Thus, integrin β3-mediated glycometabolic reprogramming might be a potential therapeutic target for S-MVPF.
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Affiliation(s)
- Shuya Mei
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Ri Tang
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yue Hu
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jinhua Feng
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Qiaoyi Xu
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yang Zhou
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Han Zhong
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yuan Gao
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Zhengyu He
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
| | - Shunpeng Xing
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China.
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Xu Q, Mei S, Nie F, Zhang Z, Feng J, Zhang J, Qian X, Gao Y, He Z, Xing S. The role of macrophage-fibroblast interaction in lipopolysaccharide-induced pulmonary fibrosis: an acceleration in lung fibroblast aerobic glycolysis. J Transl Med 2022; 102:432-439. [PMID: 34775492 DOI: 10.1038/s41374-021-00701-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 10/22/2021] [Accepted: 10/22/2021] [Indexed: 11/09/2022] Open
Abstract
Recent evidence has shown that lipopolysaccharide (LPS)-induced aerobic glycolysis of lung fibroblasts is closely associated with the pathogenesis of septic pulmonary fibrosis. Nevertheless, the underlying mechanism remains poorly defined. In this study, we demonstrate that LPS promotes c-Jun N-terminal kinase (JNK) signaling pathway activation and endogenous tumor necrosis factor-α (TNF-α) secretion in pulmonary macrophages. This, in turn, could significantly promote aerobic glycolysis and increase lactate production in lung fibroblasts through 6-phosphofructo-2-kinase/fructose-2, 6-biphosphatase 3 (PFKFB3) activation. Culturing human lung fibroblast MRC-5 cell line with TNF-α or endogenous TNF-α (cell supernatants of macrophages after LPS stimulation) both enhanced the aerobic glycolysis and increased lactate production. These effects could be prevented by treating macrophages with JNK pathway inhibitor, by administering TNF-α receptor 1 (TNFR1) siRNA, PFKFB3 inhibitor, or by silencing PFKFB3 with fibroblasts-specific shRNA. In addition, the inhibition of TNF-α secretion and PFKFB3 expression prevented LPS-induced pulmonary fibrosis in vivo. In conclusion, this study revealed that LPS-induced macrophage secretion of TNF-α could initiate fibroblast aerobic glycolysis and lactate production, implying that inflammation-metabolism interactions between lung macrophages and fibroblasts might play an essential role in LPS-induced pulmonary fibrosis.
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Affiliation(s)
- Qiaoyi Xu
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuya Mei
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fang Nie
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhiyun Zhang
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junqi Feng
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinyuan Zhang
- Department of Anesthesiology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoqing Qian
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yuan Gao
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhengyu He
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Shunpeng Xing
- Department of Critical Care Medicine, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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13
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Li Z, Qin S, Chen C, Mei S, Yao Y, Zhao Z, Li W, Deng Y, Gao Y. Emerging Trends and Hot Spots of Electrical Impedance Tomography Applications in Clinical Lung Monitoring. Front Med (Lausanne) 2022; 8:813640. [PMID: 35174185 PMCID: PMC8841839 DOI: 10.3389/fmed.2021.813640] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 12/28/2021] [Indexed: 12/14/2022] Open
Abstract
Objective This study explores the emerging trends and hot topics concerning applications on electrical impedance tomography (EIT) in clinical lung monitoring. Methods Publications on EIT applications in clinical lung monitoring in 2001–2021 were extracted from the Web of Science Core Collection (WoSCC). The search strategy was “electrical impedance tomography” and “lung.” CiteSpace, a VOS viewer was used to study the citation characteristics, cooperation, and keyword co-occurrence. Moreover, co-cited reference clustering, structural variation analysis (SVA), and future research trends were presented. Results Six hundred and thirty-six publications were included for the final analysis. The global annual publications on clinical lung monitoring gradually increased in the last two decades. Germany contributes 32.2% of total global publications. University Medical Center Schleswig-Holstein (84 publications, cited frequency 2,205), Physiological Measurement (105 publications, cited frequency 2,056), and Inéz Frerichs (116 articles, cited frequency 3,609) were the institution, journal, and author with the largest number of article citations in the research field. “Electrical impedance tomography” (occurrences, 304), “mechanical ventilation” (occurrences, 99), and “acute respiratory distress syndrome” (occurrences, 67) were the top most three frequent keywords, “noninvasive monitoring” (Avg, pub, year: 2008.17), and “extracorporeal membrane oxygenation” (Avg, pub, year: 2019.60) were the earliest and latest keywords. The keywords “electrical impedance tomography” (strength 7.88) and co-cited reference “Frerichs I, 2017, THORAX” (strength 47.45) had the highest burst value. “Driving pressure,” “respiratory failure,” and “titration” are the three keywords still maintaining a high brush value until now. The largest and smallest cluster of the co-cited references are “obstructive lung diseases” (#0, size: 97) and “lung perfusion” (#20, size: 5). Co-cited reference “Frerichs I, 2017, THORAX” (modularity change rate: 98.49) has the highest structural variability. Categories with most and least interdisciplinary crossing are “ENGINEERING” and “CRITICAL CARE MEDICINE.” Conclusions EIT is a valuable technology for clinical lung monitoring, gradually converting from imaging techniques to the clinic. Research hot spots may continue monitoring techniques, the ventilation distribution of acute respiratory distress syndrome (ARDS), and respiratory therapy strategies. More diversified lung function monitoring studies, such as lung perfusion and interdisciplinary crossing, are potentially emerging research trends.
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Affiliation(s)
- Zhe Li
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shaojie Qin
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chen Chen
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shuya Mei
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yulong Yao
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhanqi Zhao
- Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China
- Institute of Technical Medicine, Furtwangen University, Villingen-Schwenningen, Germany
| | - Wen Li
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Wen Li
| | - Yuxiao Deng
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Yuxiao Deng
| | - Yuan Gao
- Department of Critical Care Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Yuan Gao
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Mei S, Xu Q, Hu Y, Tang R, Feng J, Zhou Y, Xing S, Gao Y, He Z. Integrin β3-PKM2 pathway-mediated aerobic glycolysis contributes to mechanical ventilation-induced pulmonary fibrosis. Theranostics 2022; 12:6057-6068. [PMID: 36168620 PMCID: PMC9475464 DOI: 10.7150/thno.72328] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 08/05/2022] [Indexed: 11/05/2022] Open
Abstract
Background: Mechanical ventilation (MV) can induce pulmonary fibrosis. This study aims to investigate whether MV-induced pulmonary fibrosis is associated with aerobic glycolysis and seeks to uncover the underlying mechanisms mediated by integrin β3-pyruvate kinase M2 (PKM2) pathway. Methods: PKM2 knockdown or inhibition, integrin β3 knockout or inhibition and wild-type mice were exposed to MV (20 mL/kg) for 2 h. Results: Mice exposed to MV exhibited increased expression of collagen deposition, and upregulation of α-smooth muscle actin and collagen I in lung tissues. Single cells analysis showed that MV-induced pulmonary fibrosis was associated with increased gene expression of integrin and glycolysis in pulmonary fibroblasts, as well as upregulation of glycolytic products tested by metabolomics. Meanwhile, increased protein level of integrin β3 and PKM2 was confirmed by western blot and immunohistochemistry. Double immunofluorescence staining and flow cytometric analysis showed increased number of fibronectin+/integrin β3+ and fibronectin+/PKM2+ fibroblasts in lung tissues. Furthermore, MV-induced aerobic glycolysis and pulmonary fibrosis were ameliorated after treatment with PKM2 knockdown-AAV and inhibition, or in integrin β3 knockout and inhibition mice. Conclusions: Integrin β3-PKM2 pathway-mediated aerobic glycolysis contributes to MV-induced pulmonary fibrosis. The inhibition of aerobic glycolysis targeting integrin β3-PKM2 pathway may be a promising treatment for MV-induced pulmonary fibrosis.
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15
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Qin Y, Liu Y, Jiang Y, Mei S, Liu Y, Feng J, Guo L, Du J, Graves DT, Liu Y. Cigarette Smoke Exposure Inhibits Osteoclast Apoptosis via the mtROS Pathway. J Dent Res 2021; 100:1378-1386. [PMID: 33978516 PMCID: PMC8723169 DOI: 10.1177/00220345211009471] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
It is widely known that smoking is a risk factor for bone loss and plays a key role in osteopenia. Despite this well-known association, the mechanisms by which smoking affects bone have not been definitively established. Since smoking increases bone loss and potentially affects bone resorption in response to mechanical force, we investigated the impact of cigarette smoke on osteoclast numbers and underlying mechanisms in a mouse model of orthodontic tooth movement (OTM). The experimental group was exposed to once-daily cigarette smoke while the control group was not, and tooth movement distance and osteoclast numbers were assessed. In addition, the effect of cigarette smoke extract (CSE) on osteoclast precursor proliferation and osteoclast apoptosis was assessed in vitro. We found that cigarette smoke exposure enhanced bone remodeling stimulated by mechanical force and increased osteoclast numbers in vivo. Also, CSE increased the number of osteoclasts by inhibiting osteoclast apoptosis via the mitochondrial reactive oxygen species/cytochrome C/caspase 3 pathway in vitro. Moreover, exposure of mice to cigarette smoke affected bone marrow cells, leading to increased formation of osteoclasts in vitro. This study identifies a previously unknown mechanism of how smoking has a detrimental impact on bone.
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Affiliation(s)
- Y Qin
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Y Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Y Jiang
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - S Mei
- Department of Stomatology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Y Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - J Feng
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - L Guo
- Department of Orthodontics School of Stomatology, Capital Medical University, Beijing, China
| | - J Du
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - D T Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Y Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
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Zheng X, Wang YC, Zhu N, Cai DY, Gong XK, Mei S, Chen WJ, Chen T, Ruan JW. Downregulation of GNAS inhibits osteogenesis of bone marrow mesenchymal stem cells and promotes osteoporosis through the Wnt pathway. Eur Rev Med Pharmacol Sci 2021; 24:2886-2892. [PMID: 32271406 DOI: 10.26355/eurrev_202003_20652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to explore the role of GNAS in accelerating the progression of osteoporosis by inhibiting osteogenesis of BMSCs by the Wnt pathway. PATIENTS AND METHODS GNAS levels in OP tissues and BMSCs undergoing osteogenesis for different time points were detected. Regulatory effects of GNAS on osteogenesis-related gene expressions, ALP activity, capability of mineralization, and activation of the Wnt pathway in BMSCs were assessed through a series of functional experiments. At last, rescue experiments were performed to further verify the significance of the Wnt pathway during GNAS-mediated osteogenesis development. RESULTS GNAS was downregulated in OP tissues relative to normal bone tissues. With the prolongation of osteogenesis, GNAS level gradually increased in BMSCs. Knockdown of GNAS downregulated expression levels of ALP and RUNX2, and attenuated ALP activity and capability of mineralization in BMSCs. GNAS was able to activate the Wnt pathway in BMSCs. Notably, overexpression of Wnt3a could reverse the regulatory effects of GNAS on osteogenesis-related gene expressions, ALP activity, and capability of mineralization in BMSCs. CONCLUSIONS Downregulation of GNAS suppresses osteogenesis of BMSCs through the Wnt pathway, thus aggravating the progression of osteoporosis.
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Affiliation(s)
- X Zheng
- Department of Orthopedics, Taizhou Municipal Hospital, Taizhou, Zhejiang Province, China.
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Dempsey DE, Cronin SJ, Mei S, Kempa-Liehr AW. Automatic precursor recognition and real-time forecasting of sudden explosive volcanic eruptions at Whakaari, New Zealand. Nat Commun 2020; 11:3562. [PMID: 32678107 PMCID: PMC7367339 DOI: 10.1038/s41467-020-17375-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [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: 04/06/2020] [Accepted: 06/29/2020] [Indexed: 11/23/2022] Open
Abstract
Sudden steam-driven eruptions strike without warning and are a leading cause of fatalities at touristic volcanoes. Recent deaths following the 2019 Whakaari eruption in New Zealand expose a need for accurate, short-term forecasting. However, current volcano alert systems are heuristic and too slowly updated with human input. Here, we show that a structured machine learning approach can detect eruption precursors in real-time seismic data streamed from Whakaari. We identify four-hour energy bursts that occur hours to days before most eruptions and suggest these indicate charging of the vent hydrothermal system by hot magmatic fluids. We developed a model to issue short-term alerts of elevated eruption likelihood and show that, under cross-validation testing, it could provide advanced warning of an unseen eruption in four out of five instances, including at least four hours warning for the 2019 eruption. This makes a strong case to adopt real-time forecasting models at active volcanoes. In this study, the authors investigate the predictability of sudden eruptions, motivated by the 2019 eruption at Whakaari (White Island), New Zealand. The paper proposes a machine learning approach that is able to identify eruption precursors in data streaming from a single seismic station at Whakaari.
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Affiliation(s)
- D E Dempsey
- University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.
| | - S J Cronin
- University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - S Mei
- University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - A W Kempa-Liehr
- University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
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Wu H, Li H, Shi Z, Tang J, Mei S, Ai T, He Z. Association between NMD3 and symptoms of Parkinson's disease in Chinese patients. BMC Neurol 2020; 20:19. [PMID: 31937261 PMCID: PMC6961280 DOI: 10.1186/s12883-019-1574-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 12/15/2019] [Indexed: 02/07/2023] Open
Abstract
Background Parkinson’s disease (PD) is a progressive neurodegenerative movement disorder that is characterized by motor symptoms such as tremor, rigidity, slowness of movement and problems with gait. Large-scale meta-analyses of genome-wide association studies (GWAS) have identified few susceptibility loci in patients with sporadic PD. The aim of this study was to investigate the association between NMD3 single nucleotide polymorphism (SNP) and symptoms in PD patients in South China. Methods A total of 217 PD patients were recruited in this study and genotyped by using the SNaPshot technique and the polymerase chain reaction. All subjects were evaluated by the Mini-Mental State Examination (MMSE), Beijing version Montreal Cognitive Assessment (MoCA), Sniffin’ Sticks 16 (SS-16), Hamilton Anxiety Rating Scale, Hamilton Depression Rating Scale, 39-item Parkinson’s Disease Questionnaire (PDQ-39) and MDS Unified PD Rating Scale (MDS-UPDRS). Results NMD3 rs34016896 (C > T) carriers have worse cognitive function than wild types (MMSE: p = 0.042, NMD3 wild type: 27.44 ± 2.89, NMD3 carriers: 26.31 ± 3.79; MoCA: p = 0.005, NMD3 wild type: 23.15 ± 4.20, NMD3 carriers: 20.75 ± 6.68). Conclusions The recessive and overdominant model of NMD3 rs34016896 was associated with cognitive impairment in PD patients.
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Affiliation(s)
- Hui Wu
- Department of Anesthesiology, South Campus, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, 2000 Jiangyue Road, Shanghai, 201112, China
| | - Hui Li
- Department of Anesthesiology, South Campus, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, 2000 Jiangyue Road, Shanghai, 201112, China
| | - Zhiqiang Shi
- Department of Anesthesiology, South Campus, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, 2000 Jiangyue Road, Shanghai, 201112, China
| | - Jiajia Tang
- Department of Anesthesiology, South Campus, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, 2000 Jiangyue Road, Shanghai, 201112, China
| | - Shuya Mei
- Department of Anesthesiology, South Campus, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, 2000 Jiangyue Road, Shanghai, 201112, China
| | - Tianyi Ai
- Department of Anesthesiology, South Campus, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, 2000 Jiangyue Road, Shanghai, 201112, China
| | - Zhenzhou He
- Department of Anesthesiology, South Campus, Ren Ji Hospital, School of Medicine, Shanghai Jiaotong University, 2000 Jiangyue Road, Shanghai, 201112, China.
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Gao L, Mei S, Zhang S, Qin Q, Li H, Liao Y, Fan H, Liu Z, Zhu H. Cardio-renal Exosomes in Myocardial Infarction Serum Regulate Proangiogenic Paracrine Signaling in Adipose Mesenchymal Stem Cells. Am J Cancer Res 2020; 10:1060-1073. [PMID: 31938051 PMCID: PMC6956822 DOI: 10.7150/thno.37678] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/21/2019] [Indexed: 12/22/2022] Open
Abstract
Rationale: Mesenchymal stem cells (MSCs) play important roles in tissue repair and regeneration. However, the molecular mechanisms underlying MSCs activation remain largely unknown, thus hindering their clinical translation. Exosomes are small vesicles that act as intercellular messengers, and their potential for stem cell activation in pathological conditions has not been fully characterized yet. Here, we aim to investigate whether serum exosomes are involved in the remote activation of MSCs after myocardial infarction (MI). Methods: We established MI mouse model by ligating the left anterior descending branch of the coronary artery. Afterwards, serum exosomes were isolated from control (Con Exo) and MI mice (MI Exo) by differential centrifugation. Exosomes were characterized through transmission electron microscopy and nanoparticle tracking analysis. The cell proliferation rate was evaluated by CCK-8 and EdU incorporation assays. Exosomal miRNA and protein levels were assessed using qRT-PCR and western blotting, respectively. VEGF levels in the supernatant and serum were quantified by ELISA. Matrigel plug and tube formation assays were used to evaluate angiogenesis. To explore miR-1956 roles, overexpression and knock-down experiments were performed using mimic and inhibitor, respectively. Finally, miR-1956 target genes were confirmed using the luciferase reporter assay. Results: Both types of exosomes exhibited typical characteristics and could be internalized by adipose-derived MSCs (ADMSCs). MI Exo enhanced ADMSCs proliferation through the activation of ERK1/2. Gain- and loss-of-function studies allowed the validation of miR-1956 (enriched in MI Exo) as the functional messenger that stimulates ADMSCs-mediated angiogenesis and paracrine VEGF signaling, by downregulating Notch-1. Finally, we found that the ischemic myocardium and kidney may be the main sources that release serum exosomes after MI. Conclusions: Cardio-renal exosomes deliver miR-1956 and activate paracrine proangiogenic VEGF signaling in ADMSCs after MI; this process also involves Notch-1, which functions as the core mediator.
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Mei S, Moron A, Lee R, Kanis M, Lee Y. Trends in sentinel lymph node biopsy for vulvar carcinoma and associated disparities in its utilization. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Feng M, Jin JQ, Xia L, Xiao T, Mei S, Wang X, Huang X, Chen J, Liu M, Chen C, Rafi S, Zhu AX, Feng YX, Zhu D. Pharmacological inhibition of β-catenin/BCL9 interaction overcomes resistance to immune checkpoint blockades by modulating T reg cells. Sci Adv 2019; 5:eaau5240. [PMID: 31086813 PMCID: PMC6506245 DOI: 10.1126/sciadv.aau5240] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
The Wnt/β-catenin (β-cat) pathway plays a critical role in cancer. Using hydrocarbon-stapled peptide technologies, we aim to develop potent, selective inhibitors targeting this pathway by disrupting the interaction of β-cat with its coactivators B-cell lymphoma 9 (BCL9) and B-cell lymphoma 9-like (B9L). We identified a set of peptides, including hsBCL9CT-24, that robustly inhibits the activity of β-cat and suppresses cancer cell growth. In animal models, these peptides exhibit potent anti-tumor effects, favorable pharmacokinetic profiles, and minimal toxicities. Markedly, these peptides promote intratumoral infiltration of cytotoxic T cells by reducing regulatory T cells (Treg) and increasing dendritic cells (DCs), therefore sensitizing cancer cells to PD-1 inhibitors. Given the strong correlation between Treg infiltration and APC mutation in colorectal cancers, it indicates our peptides can reactivate anti-cancer immune response suppressed by the oncogenic Wnt pathway. In summary, we report a promising strategy for cancer therapy by pharmacological inhibition of the Wnt/β-cat signaling.
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MESH Headings
- Animals
- Antineoplastic Agents, Immunological/metabolism
- Antineoplastic Agents, Immunological/pharmacology
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Chemokine CCL20/antagonists & inhibitors
- Chemokine CCL20/metabolism
- Chemokine CCL22/antagonists & inhibitors
- Chemokine CCL22/metabolism
- Colorectal Neoplasms/metabolism
- Colorectal Neoplasms/pathology
- Female
- Humans
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Peptides/metabolism
- Peptides/pharmacology
- T-Lymphocytes, Cytotoxic/cytology
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/metabolism
- T-Lymphocytes, Regulatory/cytology
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Transcription Factors/antagonists & inhibitors
- Transcription Factors/chemistry
- Transcription Factors/metabolism
- Transplantation, Heterologous
- Wnt Signaling Pathway/drug effects
- beta Catenin/antagonists & inhibitors
- beta Catenin/metabolism
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Affiliation(s)
- M. Feng
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - J. Q. Jin
- Harvard College, Harvard University, Cambridge, MA 02138, USA
| | - L. Xia
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - T. Xiao
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02145, USA
| | - S. Mei
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - X. Wang
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - X. Huang
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - J. Chen
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - M. Liu
- Harvard College, Harvard University, Cambridge, MA 02138, USA
| | - C. Chen
- Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02145, USA
| | - S. Rafi
- Schrödinger, LLC, Cambridge, MA 02142, USA
| | - A. X. Zhu
- Massachusetts General Hospital Cancer Center, Boston, MA 02114, USA
| | - Y.-X. Feng
- The First Affiliated Hospital, Zhejiang University School of Medicine, Institute of Translational Medicine, Zhejiang University, Hangzhou 310029, China
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | - D. Zhu
- School of Pharmacy, Fudan University, Shanghai, 201203, China
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22
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Gong J, Tian J, Lou J, Wang X, Ke J, Li J, Yang Y, Gong Y, Zhu Y, Zou D, Peng X, Yang N, Mei S, Zhong R, Chang J, Miao X. A polymorphic MYC response element in KBTBD11 influences colorectal cancer risk, especially in interaction with an MYC-regulated SNP rs6983267. Ann Oncol 2019; 29:632-639. [PMID: 29267898 DOI: 10.1093/annonc/mdx789] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background MYC is a well-established cancer driver gene regulating the expression of numerous genes, indicating that polymorphisms in MYC response elements could affect tumorigenesis through altering MYC regulation. We performed integrative multistage study to evaluate the effects of variants in MYC response elements and colorectal cancer (CRC) risk. Patients and methods We systematically integrated ChIP-Seq, DNase-Seq and transcription factor motif data to screen variants with potential ability to affect the MYC binding affinity. Then, we conducted a two-stage case-control study, totally consisting of 4830 CRC cases and 4759 controls in Chinese population to identify risk polymorphisms and interactions. The effects of risk variants were confirmed by functional assays in CRC LoVo, SW480 and HCT15 cells. Results We identified a novel polymorphism rs11777210 in KBTBD11 significantly associated with CRC susceptibility (P = 2.43 × 10-12). Notably, we observed a significant interaction between rs11777210 and MYC nearby rs6983267 (P-multi = 0.003, P-add = 0.005), subjects carrying rs6983267 GG and rs11777210 CC genotypes showing higher susceptibility to CRC (2.83-fold) than those carrying rs6983267 TT and rs11777210 TT genotypes. We further demonstrated that rs6983267 T > G increased MYC expression, and MYC bound to and negatively regulated KBTBD11 expression when the rs11777210 C risk allele was present. KBTBD11 was downregulated in tumor tissues, and KBTBD11 knockdown promoted cell proliferation and inhibited cell apoptosis. Conclusion The rs11777210 is a potential predictive biomarker of CRC susceptibility, and KBTBD11 functions as a putative tumor suppressor in tumorigenesis. Our study highlighted the high CRC risk of people carrying rs6983267 G and rs11777210 C alleles, and provided possible biological mechanism of the interaction.
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Affiliation(s)
- J Gong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Tian
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Lou
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Wang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Ke
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Li
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Yang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Gong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Y Zhu
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - D Zou
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Peng
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - N Yang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - S Mei
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - R Zhong
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - J Chang
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - X Miao
- Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology, Wuhan, China; State Key Laboratory of Environment Health (Incubation), MOE (Ministry of Education) Key Laboratory of Environment & Health, Ministry of Environmental Protection Key Laboratory of Environment and Health (Wuhan), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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23
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Jaffe GR, Mei S, Boyle C, Kirch JD, Savage DE, Botez D, Mawst LJ, Knezevic I, Lagally MG, Eriksson MA. Measurements of the Thermal Resistivity of InAlAs, InGaAs, and InAlAs/InGaAs Superlattices. ACS Appl Mater Interfaces 2019; 11:11970-11975. [PMID: 30807087 DOI: 10.1021/acsami.8b17268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Thermal management efforts in nanoscale devices must consider both the thermal properties of the constituent materials and the interfaces connecting them. It is currently unclear whether alloy/alloy semiconductor superlattices such as InAlAs/InGaAs have lower thermal conductivities than their constituent alloys. We report measurements of the crossplane thermal resistivity of InAlAs/InGaAs superlattices at room temperature, showing that the superlattice resistivities are larger by a factor of 1.2-1.6 than that of the constituent bulk materials, depending on the strain state and composition. We show that the additional resistance present in these superlattices can be tuned by a factor of 2.5 by altering the lattice mismatch and thereby the phonon-mode mismatch at the interfaces, a principle that is commonly assumed for superlattices but has not been experimentally verified without adding new elements to the layers. We find that the additional resistance in superlattices does not increase significantly when the layer thickness is decreased from 4 to 2 nm. We also report measurements of 250-1000 nm thick films of undoped InGaAs and InAlAs lattice-matched to InP substrates, for there is no published thermal conductivity value for the latter, and we find it to be 2.24 ± 0.09 at 22 °C, which is ∼2.7 times smaller than the widely used estimates.
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24
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Wu Q, Wang C, Shi H, Mei S, Liu L, Xin Y, Kong X. Identification of 4 novel mutations of androgen receptor gene in 8 Chinese families with complete androgen insensitivity syndrome. Clin Genet 2018; 94:269-270. [PMID: 29693241 DOI: 10.1111/cge.13248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 02/26/2018] [Accepted: 03/03/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Q Wu
- Center of Genetics and Prenatal Diagnosis, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - C Wang
- Center of Genetics and Prenatal Diagnosis, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - H Shi
- Center of Genetics and Prenatal Diagnosis, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - S Mei
- Center of Genetics and Prenatal Diagnosis, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - L Liu
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y Xin
- Department of Obstetrics and Gynecology, The Zhengzhou Central Hospital of Zhengzhou University, Zhengzhou, China
| | - X Kong
- Center of Genetics and Prenatal Diagnosis, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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25
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Ranjan A, Raghavan N, O'Shea SJ, Mei S, Bosman M, Shubhakar K, Pey KL. Conductive Atomic Force Microscope Study of Bipolar and Threshold Resistive Switching in 2D Hexagonal Boron Nitride Films. Sci Rep 2018; 8:2854. [PMID: 29434292 PMCID: PMC5809508 DOI: 10.1038/s41598-018-21138-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [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: 11/09/2017] [Accepted: 01/29/2018] [Indexed: 11/09/2022] Open
Abstract
This study investigates the resistive switching characteristics and underlying mechanism in 2D layered hexagonal boron nitride (h-BN) dielectric films using conductive atomic force microscopy. A combination of bipolar and threshold resistive switching is observed consistently on multi-layer h-BN/Cu stacks in the low power regime with current compliance (Icomp) of less than 100 nA. Standard random telegraph noise signatures were observed in the low resistance state (LRS), similar to the trends in oxygen vacancy-based RRAM devices. While h-BN appears to be a good candidate in terms of switching performance and endurance, it performs poorly in terms of retention lifetime due to the self-recovery of LRS state (similar to recovery of soft breakdown in oxide-based dielectrics) that is consistently observed at all locations without requiring any change in the voltage polarity for Icomp ~1–100 nA.
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Affiliation(s)
- A Ranjan
- Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore. .,Institute of Materials Research and Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634, Singapore.
| | - N Raghavan
- Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore
| | - S J O'Shea
- Institute of Materials Research and Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634, Singapore
| | - S Mei
- Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore.,Institute of Materials Research and Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634, Singapore
| | - M Bosman
- Institute of Materials Research and Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, 138634, Singapore
| | - K Shubhakar
- Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore
| | - K L Pey
- Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore.
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26
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Du J, Mei S, Guo L, Su Y, Wang H, Liu Y, Zhao Z, Wang S, Liu Y. Platelet‐rich fibrin/aspirin complex promotes alveolar bone regeneration in periodontal defect in rats. J Periodontal Res 2017; 53:47-56. [PMID: 28862325 DOI: 10.1111/jre.12485] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2017] [Indexed: 12/24/2022]
Affiliation(s)
- J. Du
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction School of Stomatology Capital Medical University Beijing China
| | - S. Mei
- Department of Pharmacy Beijing Tiantan Hospital Capital Medical University Beijing China
| | - L. Guo
- Department of Orthodontics School of Stomatology Capital Medical University Beijing China
| | - Y. Su
- Department of Stomatology Beijing Tiantan Hospital Capital Medical University Beijing China
| | - H. Wang
- Department of Stomatology Beijing Tiantan Hospital Capital Medical University Beijing China
| | - Y. Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction School of Stomatology Capital Medical University Beijing China
| | - Z. Zhao
- Department of Pharmacy Beijing Tiantan Hospital Capital Medical University Beijing China
| | - S. Wang
- Salivary Gland Disease Center and Molecular Laboratory for Gene Therapy and Tooth Regeneration School of Stomatology Capital Medical University Beijing China
| | - Y. Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction School of Stomatology Capital Medical University Beijing China
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27
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Pan Y, Tian T, Park C, Lofftus S, Mei S, Liu X, Luo C, O'Malley J, Gehad A, Teague J, Divito S, Fuhlbrigge R, Puigserver P, Krueger J, Hotamisligil G, Clark R, Kupper T. 055 Tissue resident memory T cell survival requires exogenous lipid uptake and metabolism. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.068] [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: 10/19/2022]
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28
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Zhang GM, Xia JM, Sun Y, Fan LH, Duan YY, Yu SH, Duan BS, Li B, Mei S, Zhou L, Huang HB, Li JY, Guo QZ, Zhu JM. [Treatment strategies of complex lesions in patients with acute Stanford type A dissection of important branches involvement]. Zhonghua Wai Ke Za Zhi 2017; 55:251-254. [PMID: 28355760 DOI: 10.3760/cma.j.issn.0529-5815.2017.04.003] [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
Acute Stanford type A aortic dissection with important branches involved is more complex, could lead to organ malperfusion syndrome even organ failure. The understanding of pathological anatomy, classification, staging, and the pathophysiological change has increasingly mature, but not complete. In addition, the treatment strategy for complex lesions is diversified, some questions may not reach consensus. Fully understanding of the anatomical and pathophysiology is very important for surgeons to choose reasonable treatment strategy. As the rapid development of the basic research, imaging techniques and the concept of surgery procedures, the manage technique of Stanfrod type A dissection and branch vessels at the same time is getting seriously, the related issues also need further discussions.
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Affiliation(s)
- G M Zhang
- Department of Cardiovascular Surgery, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
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29
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Ding X, Jin S, Tong Y, Jiang X, Chen Z, Mei S, Zhang L, Billiar TR, Li Q. TLR4 signaling induces TLR3 up-regulation in alveolar macrophages during acute lung injury. Sci Rep 2017; 7:34278. [PMID: 28198368 PMCID: PMC5309825 DOI: 10.1038/srep34278] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 09/08/2016] [Indexed: 01/05/2023] Open
Abstract
Acute lung injury is a life-threatening inflammatory response caused by severe infection. Toll-like receptors in alveolar macrophages (AMΦ) recognize the molecular constituents of pathogens and activate the host's innate immune responses. Numerous studies have documented the importance of TLR-TLR cross talk, but few studies have specifically addressed the relationship between TLR4 and TLR3. We explored a novel mechanism of TLR3 up-regulation that is induced by LPS-TLR4 signaling in a dose- and time-dependent manner in AMΦ from C57BL/6 mice, while the LPS-induced TLR3 expression was significantly reduced in TLR4-/- and Myd88-/- mice and following pretreatment with a NF-κB inhibitor. The enhanced TLR3 up-regulation in AMΦ augmented the expression of cytokines and chemokines in response to sequential challenges with LPS and Poly I:C, a TLR3 ligand, which was physiologically associated with amplified AMΦ-induced PMN migration into lung alveoli. Our study demonstrates that the synergistic effect between TLR4 and TLR3 in macrophages is an important determinant in acute lung injury and, more importantly, that TLR3 up-regulation is dependent on TLR4-MyD88-NF-κB signaling. These results raise the possibility that bacterial infections can induce sensitivity to viral infections, which may have important implications for the therapeutic manipulation of the innate immune system.
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Affiliation(s)
- Xibing Ding
- Department of Anesthesiology, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shuqing Jin
- Department of Anesthesiology, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yao Tong
- Department of Anesthesiology, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xi Jiang
- Department of Anesthesiology, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhixia Chen
- Department of Anesthesiology, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shuya Mei
- Department of Anesthesiology, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liming Zhang
- Department of Anesthesiology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh School of Medicine, 200 Lothrop St, Pittsburgh, PA 15213, USA
| | - Quan Li
- Department of Anesthesiology, East Hospital, Tongji University School of Medicine, Shanghai, China
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30
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Yang B, Wu J, Liang X, Mei S, Zhou B. Abstract P1-01-17: Establishment and preliminary clinical application of breast cancer CTC detection kit based on immune magnetic lipid microsphere/human breast mammaglobin. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p1-01-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Objective
To explore the effect of breast cancer CTC detection kit based on immune magnetic lipid microsphere (IML) separation and human breast mammaglobin (hMAN) identification, we combined epithelial cell adhesion molecule (EpCAM) IML enrichment and immune fluorescence staining of CK/hMAN (IML/hM-BCD) method.
Methods
74 patients with metastatic breast cancer (MBC) were selected to validate the performance of our integrated CTC capture platform by carrying out side-by-side comparisons with the Cellsearch assay using the same sample. In each study, 15 mL blood was divided equally to identify CTC numbers by employing either Cellsearch and our platform.
Results
In MBC patients, the rates of diagnostic positive detection of Cellsearch and IML/hM-BCD method were 50% and 83.4%, respectively. The IML/hM-BCD method presented a greater ability to capture CTCs from MBC patients. A significant difference in the number (1~5) of CTCs captured by IMLM was observed in the images (2-fold more for IMLM vs CellsearchTM, P<0.001). Furthermore, the morphology and footprint sizes of the cells detected by IML/hM-BCD method offer another approach to validating these observations from the perspectives of cell pathology and cytology. The combined information was utilized to delineate CTCs (DAPI+/CK+/CD45-, cell size > 5 µm) from WBCs (DAPI+/CK-/CD45+, cell size < 15 µm) and cellular debris. Our immunomagnetic lipid microsphere captured significantly different CTC numbers that corresponded to the patients' clinical data.
Conclusions
The panel of IML separation and combined CK/hMAN identification may serve as representative enrichment and biomarkers for CTCs, thus it presents potentially significant valve for monitoring early metastasis, therapeutic efficacy and prognosis for the patients with breast cancer.
Citation Format: Yang B, Wu J, Liang X, Mei S, Zhou B. Establishment and preliminary clinical application of breast cancer CTC detection kit based on immune magnetic lipid microsphere/human breast mammaglobin [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P1-01-17.
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Affiliation(s)
- B Yang
- Fudan University Shanghai Cancer Center, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Baihuikang Biotechnology Co., Ltd, Shanghai, China
| | - J Wu
- Fudan University Shanghai Cancer Center, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Baihuikang Biotechnology Co., Ltd, Shanghai, China
| | - X Liang
- Fudan University Shanghai Cancer Center, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Baihuikang Biotechnology Co., Ltd, Shanghai, China
| | - S Mei
- Fudan University Shanghai Cancer Center, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Baihuikang Biotechnology Co., Ltd, Shanghai, China
| | - B Zhou
- Fudan University Shanghai Cancer Center, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Shanghai Baihuikang Biotechnology Co., Ltd, Shanghai, China
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Huertas-Company M, Gravet R, Cabrera-Vives G, Pérez-González PG, Kartaltepe JS, Barro G, Bernardi M, Mei S, Shankar F, Dimauro P, Bell EF, Kocevski D, Koo DC, Faber SM, Mcintosh DH. A CATALOG OF VISUAL-LIKE MORPHOLOGIES IN THE 5 CANDELS FIELDS USING DEEP LEARNING. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0067-0049/221/1/8] [Citation(s) in RCA: 147] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ho M, Mei S, Schlosser K, Stewart D. IDENTIFICATION OF A SUB-FRACTION OF INDUCED PLURIPOTENT STEM CELLS WITH HIGH PROPENSITY FOR DIFFERENTIATION INTO ENDOTHELIAL CELLS. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.504] [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: 11/15/2022] Open
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Li X, Yu K, Mei S, Huo J, Wang J, Zhu Y, Zhao Z. HLA-B*1502 increases the risk of phenytoin or lamotrigine induced Stevens-Johnson Syndrome/toxic epidermal necrolysis: evidence from a meta-analysis of nine case-control studies. Drug Res (Stuttg) 2014; 65:107-11. [PMID: 24871931 DOI: 10.1055/s-0034-1375684] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND AND STUDY AIMS Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are fatal adverse cutaneous drug reactions which may be induced by phenytoin (PHT) or lamotrigine (LTG). The objective of this study was to analyze the association of human leukocyte antigen (HLA)-B*1502 and PHT or LTG induced SJS/TEN. PATIENTS AND METHODS All the participants were epileptic patients and the SJS/TEN were induced by PHT or LTG. The presence or absence of the HLA-B*1502 allele of all the patients was determined. ISI Web of Knowledge, PubMed, ScienceDirect, EMBASE, and Cochrane Register of Controlled Trials (CENTRAL) data were searched for the literature published before April 2014. Meta-analysis was performed using Review Manager 5.2 software. RESULTS From 256 citations, 6 English studies were included that involved 480 epilepsy patients. Meta-analysis showed that odd ratio (OR) of PHT and LTG were 5.65 [95% CI: 2.76-11.57] and 4.51 [95% CI: 1.57-12.98], respectively. Funnel plot analysis showed symmetry, indicting less possible publication bias and the results were partly reliable. CONCLUSION There is a significant association between HLA-B*1502 and PHT or LTG-induced SJS/TEN.
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Affiliation(s)
- X Li
- Department of Pharmacy, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, China
| | - K Yu
- Department of Pharmacy, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, China
| | - S Mei
- Department of Pharmacy, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, China
| | - J Huo
- Department of Pharmacy, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, China
| | - J Wang
- Department of Pharmacy, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, China
| | - Y Zhu
- Department of Pharmacy, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, China
| | - Z Zhao
- Department of Pharmacy, Beijing Tiantan Hospital Affiliated to Capital Medical University, Beijing, China
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Bagnoli P, Ardito A, Brocchi A, Cozzaglio L, Mussi C, Mei S, Deraco M, Brusa S, Carlino C, Quagliuolo V. Cytoreductive surgery + hyperthermic intraperitoneal chemotherapy: Beginning of a demanding task in a leading cancer center. Eur J Surg Oncol 2012. [DOI: 10.1016/j.ejso.2012.07.063] [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: 11/27/2022] Open
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Xu Y, Zhao Q, Mei S, Wang J. Genomic and transcriptomic alterations following hybridisation and genome doubling in trigenomic allohexaploid Brassica carinata × Brassica rapa. Plant Biol (Stuttg) 2012; 14:734-44. [PMID: 22309095 DOI: 10.1111/j.1438-8677.2011.00553.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [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: 05/06/2023]
Abstract
Allopolyploidisation is a prominent evolutionary force that involves two major events: interspecific hybridisation and genome doubling. Both events have important functional consequences in shaping the genomic architecture of the neo-allopolyploids. The respective effects of hybridisation and genome doubling upon genomic and transcriptomic changes in Brassica allopolyploids are unresolved. In this study, amplified fragment length polymorphism (AFLP), methylation-sensitive amplification polymorphism (MSAP) and cDNA-AFLP approaches were used to track genetic, epigenetic and transcriptional changes in both allohexaploid Brassica (ArArBcBcCcCc genome) and triploid hybrids (ArBcCc genome). Results from these groups were compared with each other and also to their parents Brassica carinata (BBCC genome) and Brassica rapa (AA genome). Rapid and dramatic genetic, DNA methylation and gene expression changes were detected in the triploid hybrids. During the shift from triploidy to allohexaploidy, some of the hybridisation-induced alterations underwent reversion. Additionally, novel genetic, epigenetic and transcriptional alterations were also detected. The proportions of A-genome-specific DNA methylation and gene expression alterations were significantly greater than those of BC-genome-specific alterations in the triploid hybrids. However, the two parental genomes were equally affected during the ploidy shift. Hemi-CCG methylation changes induced by hybridisation were recovered after genome doubling. Full-CG methylation changes were a more general process initiated in the hybrid and continued after genome doubling. These results indicate that genome doubling could ameliorate genomic and transcriptomic alterations induced by hybridisation and instigate additional alterations in trigenomic Brassica allohexaploids. Moreover, genome doubling also modified hybridisation-induced progenitor genome-biased alterations and epigenetic alteration characteristics.
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Affiliation(s)
- Y Xu
- Key Laboratory of the MOE for Plant Developmental Biology, College of Life Sciences, Wuhan University, Wuhan, China Engineering Research Center of Wetland Agriculture in the Middle Reaches of the Yangtze River, Ministry of Education, College of Agriculture, Yangtze University, Jingzhou, Hubei, China Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Q Zhao
- Key Laboratory of the MOE for Plant Developmental Biology, College of Life Sciences, Wuhan University, Wuhan, China Engineering Research Center of Wetland Agriculture in the Middle Reaches of the Yangtze River, Ministry of Education, College of Agriculture, Yangtze University, Jingzhou, Hubei, China Hubei Academy of Agricultural Sciences, Wuhan, China
| | - S Mei
- Key Laboratory of the MOE for Plant Developmental Biology, College of Life Sciences, Wuhan University, Wuhan, China Engineering Research Center of Wetland Agriculture in the Middle Reaches of the Yangtze River, Ministry of Education, College of Agriculture, Yangtze University, Jingzhou, Hubei, China Hubei Academy of Agricultural Sciences, Wuhan, China
| | - J Wang
- Key Laboratory of the MOE for Plant Developmental Biology, College of Life Sciences, Wuhan University, Wuhan, China Engineering Research Center of Wetland Agriculture in the Middle Reaches of the Yangtze River, Ministry of Education, College of Agriculture, Yangtze University, Jingzhou, Hubei, China Hubei Academy of Agricultural Sciences, Wuhan, China
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Cimini A, Mei S, Benedetti E, Laurenti G, Koutris I, Cinque B, Cifone MG, Galzio R, Pitari G, Di Leandro L, Giansanti F, Lombardi A, Fabbrini MS, Ippoliti R. Distinct cellular responses induced by saporin and a transferrin-saporin conjugate in two different human glioblastoma cell lines. J Cell Physiol 2012; 227:939-51. [PMID: 21503892 DOI: 10.1002/jcp.22805] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Glioblastoma multiforme (GBM) is the most common primary brain tumour in adults, with a median survival of ~12-18 months post-diagnosis. GBM usually recurs within 12 months post-resection, with poor prognosis. Thus, novel therapeutic strategies to target and kill GBM cells are urgently needed. The marked difference of tumour cells with respect to normal brain cells renders glioblastoma a good candidate for selective targeted therapies. Recent experimental strategies focus on over expressed cell surface receptors. Targeted toxins represent a new class of selective molecules composed by a potent protein toxin and a carrier ligand. Targeted toxins approaches against glioblastoma were under investigation in phase I and II clinical trials with several immunotoxins (IT)/ligand toxins such as IL4-Pseudomonas aeruginosa exotoxin A (IL4-PE, NBI-3001), tumour growth factor fused to PE38, a shorter PE variant, (TGF)alpha-TP-38, IL13-PE38, and a transferrin-C diphtheriae toxin mutant (Tf-CRM107). In this work, we studied the effects of the plant ribosome-inactivating saporin and of its chimera transferrin-saporin against two different GBM cell lines. The data obtained here indicate that cell proliferation is affected by the toxin treatments but that different mechanisms are used, directly linked to the presence of an active or inactive p53. A model is proposed for these alternative intracellular pathways.
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Affiliation(s)
- A Cimini
- Department of Basic and Applied Biology, University of L'Aquila, L'Aquila, Italy
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Galzio R, Rosati F, Benedetti E, Cristiano L, Aldi S, Mei S, D'Angelo B, Gentile R, Laurenti G, Cifone MG, Giordano A, Cimini A. Glycosilated nucleolin as marker for human gliomas. J Cell Biochem 2012; 113:571-9. [PMID: 21938743 DOI: 10.1002/jcb.23381] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Nucleolin is a multifunctional DNA and RNA binding protein involved in regulation of gene transcription, chromatin remodeling, RNA metabolism, and ribosomal RNA synthesis. Nucleolin seems to be over-expressed in highly proliferative cells and is involved in many aspect of gene expression: DNA recombination and replication, RNA transcription by RNA polymerase I and II, rRNA processing, mRNA stabilization, cytokinesis, and apoptosis. Although nucleolin is localized predominantly in the nucleolus, it has also been shown to be localized in a phosphorylated/glycolsilated form on the cell surface of different cells. Numerous articles dealing with surface nucleolin targeting for tumor therapy have been recently published. However, at present, no extensive informations are so far available for the presence of nucleolin in human gliomas. In the present work we investigated on the presence and localization of nucleolin in glioma on glioma specimens at different grade of malignancy and on primary glioma cell cultures derived by surgical resection, trying to correlate the presence of glycosilated membrane nucleolin with the malignancy grade. To this purpose an antibody produced by us against gp273 protein, demonstrated to recognized the glycosilated surface nucleolin, has been used. The results obtained demonstrate that surface nucleolin increase with the malignancy grade thus suggesting that it may constitute a histopathological marker for glioma grading and a possible tool for targeted therapy.
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Affiliation(s)
- R Galzio
- Department of Health Sciences, University of L'Aquila, L'Aquila, Italy
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Pellegrino M, Taddeucci P, Peccianti C, Mei S, Fioravanti A, Fimiani M. Etanercept induced hidradenitis suppurativa. GIORN ITAL DERMAT V 2011; 146:503-504. [PMID: 22095184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Romano C, Taddeucci P, Mei S, Fimiani M. Solitary nodule on left lower back. GIORN ITAL DERMAT V 2011; 146:243-244. [PMID: 21566554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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40
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Zhu D, Yu B, Ju C, Mei S, Chen D. Effect of high dietary copper on the expression
of hypothalamic appetite regulators in weanling pigs. J Anim Feed Sci 2011. [DOI: 10.22358/jafs/66158/2011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Pellegrino M, Taddeucci P, Mei S, Peccianti C, Fimiani M. Chondrodermatitis nodularis chronica helicis and photodynamic therapy: a new therapeutic option? Dermatol Ther 2011; 24:144-7. [DOI: 10.1111/j.1529-8019.2010.01389.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [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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Quercetani R, Rebora AE, Fedi MC, Carelli G, Mei S, Chelli A, Poli E. Patients with profuse hair shedding may reveal anagen hair dystrophy: a diagnostic clue of alopecia areata incognita. J Eur Acad Dermatol Venereol 2010; 25:808-10. [PMID: 20946585 DOI: 10.1111/j.1468-3083.2010.03869.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Several patients, especially women, seek advice because of hair loss. They may be diagnosed clinically as having telogen effluvium (TE) or androgenetic alopecia (AGA), but histopathology may reveal that a proportion of them have in fact alopecia areata incognita (AAI). OBJECTIVES To detect dystrophic anagen hairs in such patients. METHODS We studied 1932 patients with hair loss and no signs of classical alopecia areata. They were submitted to the modified wash test (which counts the total number of telogen hairs lost and the percentage of vellus hairs) and divided into patients having pure TE (403), patients with AGA+TE (1235) and patients with pure AGA (294). Dystrophic hairs were detected with a low magnification microscope. RESULTS Dystrophic hairs were observed in 13 patients with TE (3.2%), in 54 with AGA+TE (4.4%) and in none with AGA. In addition, 7 patients with TE and 32 with AGA+TE developed small patches of alopecia areata in 6 to 9 weeks. No patches developed in patients with AGA. CONCLUSIONS The presence of dystrophic hairs and the development of patches of alopecia areata (and their absence in pure AGA) provide a first evidence of the possibility that within the heterogenous condition named TE some patients have in fact AAI.
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Affiliation(s)
- R Quercetani
- Division of Dermatology, I.F.C.A. GRUPPO G.I.O.M.I., Florence, Italy
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Mei S, Suzuki AM, Kohlstedt DL, Dixon NA, Durham WB. Experimental constraints on the strength of the lithospheric mantle. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jb006873] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Jackson MJ, Robinson GM, Ali N, Kousar Y, Mei S, Gracio J, Taylor H, Ahmed W. Surface engineering of artificial heart valve disks using nanostructured thin films deposited by chemical vapour deposition and sol-gel methods. J Med Eng Technol 2007; 30:323-9. [PMID: 16980288 DOI: 10.1080/03091900500441287] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Pyrolytic carbon (PyC) is widely used in manufacturing commercial artificial heart valve disks (HVD). Although PyC is commonly used in HVD, it is not the best material for this application since its blood compatibility is not ideal for prolonged clinical use. As a result thrombosis often occurs and the patients are required to take anti-coagulation drugs on a regular basis in order to minimize the formation of thrombosis. However, anti-coagulation therapy gives rise to some detrimental side effects in patients. Therefore, it is extremely urgent that newer and more technically advanced materials with better surface and bulk properties are developed. In this paper, we report the mechanical properties of PyC-HVD, i.e. strength, wear resistance and coefficient of friction. The strength of the material was assessed using Brinell indentation tests. Furthermore, wear resistance and coefficient of friction values were obtained from pin-on-disk testing. The micro-structural properties of PyC were characterized using XRD, Raman spectroscopy and SEM analysis. Also in this paper we report the preparation of freestanding nanocrystalline diamond films (FSND) using the time-modulated chemical vapour deposition (TMCVD) process. Furthermore, the sol-gel technique was used to uniformly coat PyC-HVD with dense, nanocrystalline-titanium oxide (nc-TiO2) coatings. The as-grown nc-TiO2 coatings were characterized for microstructure using SEM and XRD analysis.
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Affiliation(s)
- M J Jackson
- Birck Nanotechnology Center and College of Technology, Purdue University, West Lafayette, IN 47907-2021, USA.
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Nakagawa K, Holla VR, Wei Y, Wang WH, Gatica A, Wei S, Mei S, Miller CM, Cha DR, Price E, Zent R, Pozzi A, Breyer MD, Guan Y, Falck JR, Waterman MR, Capdevila JH. Does Malfunction of Arachidonic Acid Epoxygenase Explain Salt-Sensitive Hypertension? J Am Soc Nephrol 2006; 17:2345-2352. [PMID: 37000980 DOI: 10.1681/01.asn.0000926848.81018.f7] [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: 03/28/2023] Open
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Affiliation(s)
- L Amato
- Department of Dermatology, University of Florence, Florence, Italy
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Qiu L, Hu X, Zhou Y, Mei S, Nguyen KB, Pang Y. Steinernema akhursti sp. n. (Nematoda: Steinernematidae) from Yunnan, China. J Invertebr Pathol 2005; 90:151-60. [PMID: 16289544 DOI: 10.1016/j.jip.2005.09.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2004] [Revised: 05/05/2005] [Accepted: 09/02/2005] [Indexed: 10/25/2022]
Abstract
A new species of entomopathogenic nematode, herein described as Steinernema akhursti sp. n., was recovered from soil samples collected from Yunnan Province, the People's Republic of China. Both morphological and molecular data show congruently that S. akhursti sp. n. belongs to the Steinernema feltiae group. It can be separated from all described Steinernema species by the combined morphological and morphometrical characters of various stages of the nematodes. For the first generation male, the new species can be recognized by spicule length 90 +/- 4.6 microm, spicule tip blunt with an aperture on the ventral side, gubernaculum with a long and needle-shaped cuneus, and tail conoid with a prominent mucron on the tip and a concave on ventral side. For the infective juvenile, the combination of the following characters: body length 812 +/- 19 microm, distance from anterior end to excretory pore 59 +/- 1.5 microm, tail length 73 +/- 2.9 microm, E% 77 +/- 4.5, lateral field with six evenly distributed and identical ridges at the middle body portion, and tail with long and slightly constrict hyaline portion can be used to separate the new species from other nematodes. For the female, the new species is characterized by: tail conoid with a short mucron and slightly swelling anal portion and a symmetrical, slightly protruding vulva with conspicuous double-flapped epiptygma. The nematode can be separated from other described species of Steinernema by DNA sequences of either a partial 28S rDNA or the internal transcribed spacer regions of rDNA and from the closely related species S. feltiae and Steinernema oregonense by cross-breeding tests.
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Affiliation(s)
- L Qiu
- State Key Laboratory for Biocontrol, Zhongshan University, Guangzhou 510275, People's Republic of China.
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Xu X, Mei S, Ferreira JMF, Nishimura T, Hirosaki N. Temperature-induced gelation of concentrated silicon carbide suspensions. J Colloid Interface Sci 2004; 277:111-5. [PMID: 15276046 DOI: 10.1016/j.jcis.2004.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2004] [Accepted: 04/12/2004] [Indexed: 10/26/2022]
Abstract
Due to the steric barrier provided by the adsorption of the dispersant hypermer KD1 (a polyester/polyamine condensation polymer), stable and low-viscosity suspensions of SiC, Y(2)O(3), and Al(2)O(3) powder mixtures could be prepared in methyl ethyl ketone (MEK)/ethanol (E) solvent with solids loading as high as 60 vol%. The solvency of the dispersant in MEK/E decreased dramatically on cooling. Steady shear viscosity and oscillatory measurements were performed as a function of temperature for suspensions with different solids loading. The viscosity and elastic modulus of suspension increased with decreasing temperature and became more sensitive with the increase of solids loading. The suspensions with solids loading higher than 40 vol% could be solidified with decreasing temperature, but gelation temperature and gelation stiffness decreased with decreasing solids loading. The 60 vol% solid-loaded suspension was a stable and free-flowing fluid at 20 degrees C and gradually transformed to a very highly viscous and elastic system upon cooling to about 13 degrees C. Complete solidification occurred when the temperature was decreased to 5 degrees C. The gelation mechanism was mainly based on the collapse of the adsorbed layer as the temperature decreases, which induced incipient flocculation and formed a stiff network. The gelled body was further strengthened by separation of the dispersant from the suspension.
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Affiliation(s)
- X Xu
- Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
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