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Ma QM, Tang WB, Li XJ, Chang F, Yin X, Chen ZH, Wu GH, Xia CD, Li XL, Wang DY, Chu ZG, Zhang Y, Wang L, Wu CL, Tong YL, Cui P, Guo GH, Zhu ZH, Huang SY, Chang L, Liu R, Liu YJ, Wang YS, Liu XB, Shen T, Zhu F. [Multicenter retrospect analysis of early clinical features and analysis of risk factors on prognosis of elderly patients with severe burns]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2024; 40:249-257. [PMID: 38548395 DOI: 10.3760/cma.j.cn501225-20230808-00042] [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] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Objective: To investigate the early clinical characteristics of elderly patients with severe burns and the risk factors on prognosis. Methods: This study was a retrospective case series study. Clinical data of 124 elderly patients with severe burns who met the inclusion criteria and were admitted to the 12 hospitals from January 2015 to December 2020 were collected, including 4 patients from the Fourth People's Hospital of Dalian, 5 patients from Fujian Medical University Union Hospital, 22 patients from Guangzhou Red Cross Hospital of Jinan University, 5 patients from Heilongjiang Provincial Hospital, 27 patients from the First Affiliated Hospital of Naval Medical University, 9 patients from the First Affiliated Hospital of Nanchang University, 10 patients from Affiliated Hospital of Nantong University, 9 patients from Tongren Hospital of Wuhan University & Wuhan Third Hospital, 12 patients from the 924th Hospital of PLA, 6 patients from Zhangjiagang First People's Hospital, 4 patients from Taizhou Hospital of Zhejiang Province, and 11 patients from Zhengzhou First People's Hospital. The patients' overall clinical characteristics, such as gender, age, body mass index, total burn area, full-thickness burn area, inhalation injury, causative factors, whether combined with underlying medical diseases, and admission time after injury were recorded. According to the survival outcome within 28 days after injury, the patients were divided into survival group (89 cases) and death group (35 cases). The following data of patients were compared between the two groups, including the basic data and injuries (the same as the overall clinical characteristics ahead); the coagulation indexes within the first 24 hours of injury such as prothrombin time (PT), activated partial thromboplastin time (APTT), thrombin time, D-dimer, fibrinogen degradation product (FDP), international normalized ratio (INR), and fibrinogen; the blood routine indexes within the first 24 hours of injury such as white blood cell count, platelet count, neutrophil-to-lymphocyte ratio, monocyte count, red blood cell count, hemoglobin, and hematocrit; the organ function indexes within the first 24 hours of injury such as direct bilirubin, total bilirubin, urea, serum creatinine, aspartate aminotransferase, alanine aminotransferase, total protein, albumin, globulin, blood glucose, triglyceride, total cholesterol, alkaline phosphatase, creatine kinase, electrolyte indexes (potassium, sodium, chlorine, calcium, magnesium, and phosphorus in blood), uric acid, myoglobin, and brain natriuretic peptide; the infection and blood gas indexes within the first 24 hours of injury such as procalcitonin, C-reactive protein, pH value, oxygenation index, base excess, and lactate; treatment such as whether conducted with mechanical ventilation, whether conducted with continuous renal replacement therapy, whether conducted with anticoagulation therapy, whether applied with vasoactive drugs, and fluid resuscitation. The analysis was conducted to screen the independent risk factors for the mortality within 28 days after injury in elderly patients with severe burns. Results: Among 124 patients, there were 82 males and 42 females, aged 60-97 years, with body mass index of 23.44 (21.09, 25.95) kg/m2, total burn area of 54.00% (42.00%, 75.00%) total body surface area (TBSA), and full-thickness burn area of 25.00% (10.00%, 40.00%) TBSA. The patients were mainly combined with moderate to severe inhalation injury and caused by flame burns. There were 43 cases with underlying medical diseases. The majority of patients were admitted to the hospital within 8 hours after injury. There were statistically significant differences between patients in the 2 groups in terms of age, total burn area, full-thickness burn area, and inhalation injury, and PT, APTT, D-dimer, FDP, INR, white blood cell count, platelet count, urea, serum creatinine, blood glucose, blood sodium, uric acid, myoglobin, and urine volume within the first 24 hours of injury (with Z values of 2.37, 5.49, 5.26, 5.97, 2.18, 1.95, 2.68, 2.68, 2.51, 2.82, 2.14, 3.40, 5.31, 3.41, 2.35, 3.81, 2.16, and -3.82, respectively, P<0.05); there were statistically significant differences between two groups of patients in whether conducted with mechanical ventilation and whether applied with vasoactive drugs (with χ2 values of 9.44 and 28.50, respectively, P<0.05). Age, total burn area, full-thickness burn area, serum creatinine within the first 24 hours of injury, and APTT within the first 24 hours of injury were the independent risk factors for the mortality within 28 days after injury in elderly patients with severe burns (with odds ratios of 1.17, 1.10, 1.10, 1.09, and 1.27, 95% confidence intervals of 1.03-1.40, 1.04-1.21, 1.05-1.19, 1.05-1.17, and 1.07-1.69, respectively, P<0.05). Conclusions: The elderly patients with severe burns had the injuries mainly from flame burns, often accompanied by moderate to severe inhalation injury and enhanced inflammatory response, elevated blood glucose levels, activated fibrinolysis, and impaired organ function in the early stage, which are associated with their prognosis. Age, total burn area, full-thickness burn area, and serum creatinine and APTT within the first 24 hours of injury are the independent risk factors for death within 28 days after injury in this population.
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Affiliation(s)
- Q M Ma
- Department of Burn Surgery, the First Affiliated Hospital of Naval Medical University, Shanghai 200433, China Department of Critical Care Medicine, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, China
| | - W B Tang
- Department of Burns and Plastic Surgery, Guangzhou Red Cross Hospital of Jinan University, Guangzhou 510220, China
| | - X J Li
- Department of Burns and Plastic Surgery, Guangzhou Red Cross Hospital of Jinan University, Guangzhou 510220, China
| | - F Chang
- Department of Burns and Plastic Surgery, Zhangjiagang First People's Hospital, Zhangjiagang 215600, China
| | - X Yin
- Department of Burns and Plastic Surgery, Zhangjiagang First People's Hospital, Zhangjiagang 215600, China
| | - Z H Chen
- Department of Burns, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - G H Wu
- Department of Burns, Fujian Medical University Union Hospital, Fuzhou 350001, China
| | - C D Xia
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X L Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - D Y Wang
- Department of Burns, Tongren Hospital of Wuhan University & Wuhan Third Hospital, Wuhan 430060, China
| | - Z G Chu
- Department of Burns, Tongren Hospital of Wuhan University & Wuhan Third Hospital, Wuhan 430060, China
| | - Y Zhang
- Department of Burns and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - L Wang
- Department of Burns and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - C L Wu
- Department of Burns, Taizhou Hospital of Zhejiang Province, Linhai 317000, China
| | - Y L Tong
- Department of Burns and Plastic Surgery, the 924th Hospital of PLA, Guilin 541002, China
| | - P Cui
- Department of Burns and Plastic Surgery, the 924th Hospital of PLA, Guilin 541002, China
| | - G H Guo
- Medical Center of Burn Plastic and Wound Repair, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Z H Zhu
- Medical Center of Burn Plastic and Wound Repair, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - S Y Huang
- Medical Center of Burn Plastic and Wound Repair, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - L Chang
- Department of Burns and Plastic Surgery, the Fourth People's Hospital of Dalian, Dalian 116031, China
| | - R Liu
- Department of Burns, Heilongjiang Provincial Hospital, Harbin 150036, China
| | - Y J Liu
- Department of Burns, Heilongjiang Provincial Hospital, Harbin 150036, China
| | - Y S Wang
- Department of Burn Surgery, the First Affiliated Hospital of Naval Medical University, Shanghai 200433, China
| | - X B Liu
- Department of Critical Care Medicine, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, China
| | - T Shen
- Department of Critical Care Medicine, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, China
| | - F Zhu
- Department of Critical Care Medicine, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, China
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Li C, Guan R, Li W, Wei D, Cao S, Chang F, Wei Q, Wei R, Chen L, Xu C, Wu K, Lei D. Analysis of myosin genes in HNSCC and identify MYL1 as a specific poor prognostic biomarker, promotes tumor metastasis and correlates with tumor immune infiltration in HNSCC. BMC Cancer 2023; 23:840. [PMID: 37679666 PMCID: PMC10486092 DOI: 10.1186/s12885-023-11349-5] [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: 04/01/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023] Open
Abstract
Head neck squamous cell carcinoma (HNSCC) is one of the most common malignant tumors which ranks the sixth incidence in the world. Although treatments for HNSCC have improved significantly in recent years, its recurrence rate and mortality rate remain high. Myosin genes have been studied in a variety of tumors, however its role in HNSCC has not been elucidated. GSE58911 and GSE30784 gene expression profile analysis were performed to detect significantly dys-regulated myosin genes in HNSCC. The Cancer Genome Atlas (TCGA) HNSCC database was used to verify the dys-regulated myosin genes and study the relationship between these genes and prognosis in HNSCC. The results showed that MYL1, MYL2, MYL3, MYH2, and MYH7 were down-regulated, while MYH10 was up-regulated in patients with HNSCC. Interestingly, MYL1, MYL2, MYH1, MYH2, and MYH7 were shown to be unfavorable prognostic markers in HNSCC. It is also worth noting that MYL1 was a specific unfavorable prognostic biomarker in HNSCC. MYL1, MYL2, MYL3, MYH2, MYH7, and MYH10 promoted CD4 + T cells activation in HNSCC. MYL1 was proved to be down-regulated in HNSCC tissues compared to normal tissues at protein levels. MYL1 overexpression had no effect on proliferation, but significantly promoted migration of Fadu cells. MYL1 increased EGF and EGFR protein expression levels. Moreover, there is a positive correlation between MYL1 expression and Tcm CD8 cells, Tcm CD4 + cells, NK cells, Mast cells, NKT cells, Tfh cells and Treg cells in HNSCC. Overall, MYL1 facilitates tumor metastasis and correlates with tumor immune infiltration in HNSCC and these effects may be associated with the EGF/EGFR pathway.
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Affiliation(s)
- Ce Li
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Rui Guan
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Wenming Li
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Dongmin Wei
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Shengda Cao
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Fen Chang
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Qun Wei
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Ran Wei
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Long Chen
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Chenyang Xu
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Kainan Wu
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China
| | - Dapeng Lei
- Department of Otorhinolaryngology, Qilu Hospital, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Shandong University, 107 West Wenhua Road, Jinan, 250012, Shandong, China.
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Li C, Guan R, Li W, Wei D, Cao S, Xu C, Chang F, Wang P, Chen L, Lei D. Single-cell RNA sequencing reveals tumor immune microenvironment in human hypopharygeal squamous cell carcinoma and lymphatic metastasis. Front Immunol 2023; 14:1168191. [PMID: 37503341 PMCID: PMC10369788 DOI: 10.3389/fimmu.2023.1168191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 06/23/2023] [Indexed: 07/29/2023] Open
Abstract
Background Human hypopharygeal squamous cell carcinoma (HSCC) is a common head and neck cancer with a poor prognosis in advanced stages. The occurrence and development of tumor is the result of mutual influence and co-evolution between tumor cells and tumor microenvironment (TME). Tumor immune microenvironment (TIME) refers to the immune microenvironment surrounding tumor cells. Studying TIME in HSCC could provide new targets and therapeutic strategies for HSCC. Methods We performed single-cell RNA sequencing (scRNA-seq) and analysis of hypopharyngeal carcinoma, paracancerous, and lymphoid tissues from five HSCC patients. Subdivide of B cells, T cells, macrophages cells, and monocytes and their distribution in three kinds of tissues as well as marker genes were analyzed. Different genes of IGHG1 plasma cells and SPP1+ macrophages between HSCC tissues, adjacent normal tissues and lymphatic tissues were analyzed. Additionally, we studied proliferating lymphocytes, T cells exhaustion, and T cell receptor (TCR) repertoire in three kinds of tissues. Results Transcriptome profiles of 132,869 single cells were obtained and grouped into seven cell clusters, including epithelial cells, lymphocytes, mononuclear phagocytics system (MPs), fibroblasts, endothelial cells (ECs), plasmacytoid dendritic cells (pDCs), and mast cells. Tumor metastasis occurred in three lymphoid tissues. Four distinct populations were identified from lymphocytes, including B cells, plasma cells, T cells and proliferating lymphocytes. We found IGHA1 and IGHG1 specific plasma cells significantly overexpressed in HSCC tissues compared with normal hypopharygeal tissues and lymphatic tissues. Five distinct populations from MPs were identified, including macrophages, monocytes, mature dendritic cells (DCs), Type 1 conventional dendritic cells (cDC1) and Type 2 conventional dendritic cells (cDC2). SPP1+ macrophages were significantly overexpressed in HSCC tissues and lymphatic tissues compared with normal hypopharygeal tissues, which are thought to be M2-type macrophages. Exhaustion of CD8+ Teff cells occurred in HSCC tissues. At last, we verified that IgA and IgG1 protein expression levels were significantly up-regulated in HSCC tissues compared to adjacent normal tissues. Conclusion Overall, this study revealed TIME in HSCC and lymphatic metastasis, and provided potential therapeutic targets for HSCC.
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Duan J, Huang D, Liu C, Lv Y, Zhang L, Chang F, Zeng X, Li L, Wang W, Shao G. USP11-mediated LSH deubiquitination inhibits ferroptosis in colorectal cancer through epigenetic activation of CYP24A1. Cell Death Dis 2023; 14:402. [PMID: 37414755 PMCID: PMC10326026 DOI: 10.1038/s41419-023-05915-9] [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: 11/25/2022] [Revised: 06/07/2023] [Accepted: 06/21/2023] [Indexed: 07/08/2023]
Abstract
Ferroptosis is an iron-dependent form of regulated cell death characterized by lipid peroxidation. Colorectal cancer (CRC) cells evade ferroptosis despite their requirement of substantial iron and reactive oxygen species (ROS) to sustain active metabolism and extensive proliferation. However, the underlying mechanism is unclear. Herein, we report the role of lymphoid-specific helicase (LSH), a chromatin-remodeling protein, in suppressing erastin-induced ferroptosis in CRC cells. We demonstrate that erastin treatment leads to dose- and time-dependent downregulation of LSH in CRC cells, and depletion of LSH increases cell sensitivity to ferroptosis. Mechanistically, LSH interacts with and is stabilized by ubiquitin-specific protease 11 (USP11) via deubiquitination; this interaction was disrupted by erastin treatment, resulting in increased ubiquitination and LSH degradation. Moreover, we identified cytochrome P450 family 24 subfamily A member 1 (CYP24A1) as a transcriptional target of LSH. LSH binds to the CYP24A1 promoter, promoting nucleosome eviction and reducing H3K27me3 occupancy, thus leading to transcription of CYP24A1. This cascade inhibits excessive intracellular Ca2+ influx, thereby reducing lipid peroxidation and ultimately conferring resistance to ferroptosis. Importantly, aberrant expression of USP11, LSH, and CYP24A1 is observed in CRC tissues and correlates with poor patient prognosis. Taken together, our study demonstrates the crucial role of the USP11/LSH/CYP24A1 signaling axis in inhibiting ferroptosis in CRC, highlighting its potential as a therapeutic target in CRC treatment.
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Affiliation(s)
- Junyi Duan
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Daoyuan Huang
- Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, 100053, Beijing, China
| | - Cheng Liu
- Program for Cancer and Cell Biology, Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University International Cancer Institute, 100191, Beijing, China
| | - Yangbo Lv
- Colorectal Department of Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, 324000, Quzhou, China
| | - Lei Zhang
- Program for Cancer and Cell Biology, Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University International Cancer Institute, 100191, Beijing, China
| | - Fen Chang
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), 250012, Jinan, China
| | - Xiangyu Zeng
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Li Li
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Weiping Wang
- Department of Biochemistry and Molecular Biology, Peking University Health Science Center, 100191, Beijing, China.
| | - Genze Shao
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China.
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Wu K, Chang F, Li W, Wei D, Cao S, Xie Y, Li C, Lei D. Preliminary study based on methylation and transcriptome gene sequencing of lncRNAs and immune infiltration in hypopharyngeal carcinoma. Front Oncol 2023; 13:1117622. [PMID: 37182154 PMCID: PMC10168126 DOI: 10.3389/fonc.2023.1117622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 03/21/2023] [Indexed: 05/16/2023] Open
Abstract
Background Hypopharyngeal squamous cell cancer (HSCC) is one of the most malignant tumors of the head and neck. It is not easy to detect in the early stage due to its hidden location; thus, lymph node metastasis is highly likely at diagnosis, leading to a poor prognosis. It is believed that epigenetic modification is related to cancer invasion and metastasis. However, the role of m6A-related lncRNA in the tumor microenvironment (TME) of HSCC remains unclear. Methods The whole transcriptome and methylation sequencing of 5 pairs of HSCC tissues and adjacent tissues were performed to identify the methylation and transcriptome profiles of lncRNAs. The biological significance of lncRNAs differentially expressing the m6A peak was analyzed by Gene Ontology and Kyoto Encyclopedia of Genes and Genomes. By constructing an m6A lncRNA-microRNA network, the mechanism of m6A lncRNAs in HSCC was analyzed. The relative expression levels of selected lncRNAs were examined by quantitative polymerase chain reaction. The CIBERSORT algorithm was used to evaluate the relative proportion of immune cell infiltration in HSCC and paracancerous tissues. Results Based on an in-depth analysis of the sequencing results, 14413 differentially expressed lncRNAs were revealed, including 7329 up-regulated and 7084 down-regulated lncRNAs. Additionally, 4542 up-methylated and 2253 down-methylated lncRNAs were detected. We demonstrated methylation patterns and gene expression profiles of lncRNAs of HSCC transcriptome. In the intersection analysis of lncRNAs and methylated lncRNAs, 51 lncRNAs with up-regulated transcriptome and methylation and 40 lncRNAs with down-regulated transcriptome and methylation were screened, and significantly differentiated lncRNAs were further studied. In the immune cell infiltration analysis, B cell memory was significantly elevated in cancer tissue, while γδT cell amount was significantly decreased. Conclusion m6A modification of lncRNAs might be involved in HSCC pathogenesis. Infiltration of immune cells in HSCC might provide a new direction for its treatment. This study provides new insights for exploring the possible HSCC pathogenesis and searching for new potential therapeutic targets.
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Affiliation(s)
- Kainan Wu
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Fen Chang
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Wenming Li
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Dongmin Wei
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Shengda Cao
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yulin Xie
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Ce Li
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Dapeng Lei
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan, Shandong, China
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
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Li Q, Ma Y, Chang F, Xu Y, Deng J, Duan J, Jiang W, He Q, Xu L, Zhong L, Shao G, Li L. The deubiquitinating enzyme complex BRISC regulates Aurora B activation via lysine-63-linked ubiquitination in mitosis. Commun Biol 2022; 5:1335. [PMID: 36473924 PMCID: PMC9726926 DOI: 10.1038/s42003-022-04299-4] [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: 01/14/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022] Open
Abstract
Faithful chromosome segregation requires bi-oriented kinetochore-microtubule attachment on the metaphase spindle. Aurora B kinase, the catalytic core of the chromosome passage complex (CPC), plays a crucial role in this process. Aurora B activation has widely been investigated in the context of protein phosphorylation. Here, we report that Aurora B is ubiquitinated in mitosis through lysine-63 ubiquitin chains (K63-Ub), which is required for its activation. Mutation of Aurora B at its primary K63 ubiquitin site inhibits its activation, reduces its kinase activity, and disrupts the association of Aurora B with other components of CPC, leading to severe mitotic defects and cell apoptosis. Moreover, we identify that BRCC36 isopeptidase complex (BRISC) is the K63-specific deubiquitinating enzyme for Aurora B. BRISC deficiency augments the accumulation of Aurora B K63-Ubs, leading to Aurora B hyperactivation and erroneous chromosome-microtubule attachments. These findings define the role of K63-linked ubiquitination in regulating Aurora B activation and provide a potential site for Aurora B-targeting drug design.
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Affiliation(s)
- Qin Li
- grid.11135.370000 0001 2256 9319Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
| | - Yanfang Ma
- grid.11135.370000 0001 2256 9319Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
| | - Fen Chang
- grid.11135.370000 0001 2256 9319Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
| | - Yongjie Xu
- grid.11135.370000 0001 2256 9319Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
| | - Jingcheng Deng
- grid.11135.370000 0001 2256 9319Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
| | - Junyi Duan
- grid.11135.370000 0001 2256 9319Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
| | - Wei Jiang
- grid.11135.370000 0001 2256 9319Department of Biochemistry and Biophysics, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
| | - Qihua He
- grid.11135.370000 0001 2256 9319Center of Medical and Health Analysis, Peking University Health Science Center, 100191 Beijing, China
| | - Luzheng Xu
- grid.11135.370000 0001 2256 9319Center of Medical and Health Analysis, Peking University Health Science Center, 100191 Beijing, China
| | - Lijun Zhong
- grid.11135.370000 0001 2256 9319Center of Medical and Health Analysis, Peking University Health Science Center, 100191 Beijing, China
| | - Genze Shao
- grid.11135.370000 0001 2256 9319Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
| | - Li Li
- grid.11135.370000 0001 2256 9319Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, 100191 Beijing, China
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Chen H, Xiong Z, Zhang A, Ge C, Chang F. Improving the Production of Antitumor Calicheamicin by the Micromonospora echinospora Mutant Coupled with in situ Resin Adsorption in Fermentation Process. APPL BIOCHEM MICRO+ 2022. [DOI: 10.1134/s0003683822100040] [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: 03/01/2023]
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Wu K, Chang F, Li W, Su T, Lei D. Role of IGF2BPs in head and neck squamous cell carcinoma. Front Oncol 2022; 12:1003808. [PMID: 36237306 PMCID: PMC9552850 DOI: 10.3389/fonc.2022.1003808] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/07/2022] [Indexed: 12/24/2022] Open
Abstract
IGF2BPs belongs to a family of conserved RNA-bound oncoembryonic proteins that play a crucial part in various aspects of cell function, such as cell migration, morphology, metabolism, proliferation and differentiation. Recent studies have shown that IGF2BPs play a role as a member of m6A reader. m6A is the most abundant modification in RNA epigenetics, which is closely related to a family of RNA-binding proteins. These proteins are fell into three categories—writers, readers and erasers. In the present study, IGF2BPs play an important role in tumor metabolism, especially in head and neck squamous cell carcinoma (HNSCC) metabolism. In this paper, the basic structure of IGF2BPs, its role in the development of HNSCC, molecular mechanism, research progress and research prospect of IGF2BPs in HNSCC are reviewed, which will providing new ideas for further study of IGF2BPs.
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Affiliation(s)
- Kainan Wu
- Key Laboratory of Otolaryngology, NHFPC (Shandong University), Shandong, China
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Shandong, China
| | - Fen Chang
- Key Laboratory of Otolaryngology, NHFPC (Shandong University), Shandong, China
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Shandong, China
| | - Wenming Li
- Key Laboratory of Otolaryngology, NHFPC (Shandong University), Shandong, China
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Shandong, China
| | - Tongdong Su
- Key Laboratory of Otolaryngology, NHFPC (Shandong University), Shandong, China
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Shandong, China
| | - Dapeng Lei
- Key Laboratory of Otolaryngology, NHFPC (Shandong University), Shandong, China
- Department of Otorhinolaryngology, Qilu Hospital, Shandong University, Shandong, China
- *Correspondence: Dapeng Lei,
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9
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Cho M, Wang L, Chang F. Synergistic effect of berberine and tea tree oil against neisseria gonorrhea, in vitro T84 cell mucosa model. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.524] [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]
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10
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Moore JL, Davies AR, Santaolalla A, van Hemelrijck M, Maisey N, Lagergren J, Gossage JA, Kelly M, Baker CR, Jacques A, Griffin N, Goh V, Ngan S, Lumsden A, Owczarczyk K, Qureshi A, Deere H, Green M, Chang F, Mahadeva U, Gill-Barman B, George S, Meenan J, Hill M, Waters J, Cominos M, Hynes O, Tham G, Bott RK, Dunn JM, Zeki SS. ASO Visual Abstract: Clinical Relevance of the Tumor Location-Modified Laurén Classification System of Gastric Cancer in a Western Population. Ann Surg Oncol 2022. [DOI: 10.1245/s10434-021-11308-z] [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: 11/18/2022]
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11
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Liu F, Han Q, Zhang T, Chang F, Deng J, Huang X, Wang W, Xu Y, Li Q, Xu L, Zhang B, Li W, Li L, Su Y, Li Y, Shao G. CRL4-DCAF8L1 Regulates BRCA1 and BARD1 Protein Stability. Int J Biol Sci 2022; 18:1434-1450. [PMID: 35280675 PMCID: PMC8898372 DOI: 10.7150/ijbs.57178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 12/25/2021] [Indexed: 11/05/2022] Open
Abstract
BRCA1 is frequently down-regulated in breast cancer, the underlying mechanism is unclear. Here we identified DCAF8L1, an X-linked gene product, as a DDB1-Cullin associated Factor (DCAF) for CUL4 E3 ligases to target BRCA1 and BARD1 for proteasomal degradation. Forced expression of DCAF8L1 caused reduction of BRCA1 and BARD1, and impaired DNA damage repair function, conferring increased sensitivity to irradiation and DNA damaging agents, as well as Olaparib, a PARPi anticancer drug; while depletion of DCAF8L1 restored BRCA1 and suppressed the growth of its xenograft tumors. Furthermore, the expression of DCAF8L1 was induced in human H9 ES cells during transition from primed to naïve state when Xi chromosome was reactivated. Aberrant expression of DCAF8L1 was observed in human breast fibroadenoma and breast cancer. These findings suggest that CRL4DCAF8L1 is an important E3 ligase that may participate in the development of breast cancer, probably through regulating the stability of BRCA1 and BARD1 tumor suppressor, linking BRCA1 and X chromosome inactivation to breast carcinogenesis.
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Xu Y, Hu Y, Xu T, Yan K, Zhang T, Li Q, Chang F, Guo X, Peng J, Li M, Zhao M, Zhen H, Xu L, Zheng D, Li L, Shao G. RNF8-mediated regulation of Akt promotes lung cancer cell survival and resistance to DNA damage. Cell Rep 2021; 37:109854. [PMID: 34686341 DOI: 10.1016/j.celrep.2021.109854] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 11/25/2020] [Revised: 08/18/2021] [Accepted: 09/28/2021] [Indexed: 01/21/2023] Open
Abstract
Despite the tremendous success of targeted and conventional therapies for lung cancer, therapeutic resistance is a common and major clinical challenge. RNF8 is a ubiquitin E3 ligase that plays essential roles in the DNA damage response; however, its role in the pathogenesis of lung cancer is unclear. Here, we report that RNF8 is overexpressed in lung cancer and positively correlates with the expression of p-Akt and poor survival of patients with non-small-cell lung cancer. In addition, we identify RNF8 as the E3 ligase for regulating the activation of Akt by K63-linked ubiquitination under physiological and genotoxic conditions, which leads to lung cancer cell proliferation and resistance to chemotherapy. Together, our study suggests that RNF8 could be a very promising target in precision medicine for lung cancer.
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Affiliation(s)
- Yongjie Xu
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Yumeng Hu
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Tao Xu
- The Affiliated Hospital of Qingdao University, Qingdao 266021, China
| | - Kaowen Yan
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ting Zhang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Qin Li
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Fen Chang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Xueyuan Guo
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Jingyu Peng
- State Key Laboratory of Membrane Biology, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, School of Life Sciences, Peking University, Beijing 100871, China
| | - Mo Li
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Min Zhao
- Department of Oncology, Hebei Chest Hospital, Research Center of Hebei Lung Cancer Prevention and Treatment, Shijiazhuang, Hebei 050041, China
| | - Hongying Zhen
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Luzheng Xu
- Medical and Health Analysis Center, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Duo Zheng
- Department of Cell Biology and Genetics, Shenzhen University School of Medicine, Shenzhen 518055, China
| | - Li Li
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.
| | - Genze Shao
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.
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13
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Chang X, Li S, Xue XD, Chang F. Propranolol regulates ERK1/2 signaling pathway and promotes chronic wound healing in diabetic rats. Eur Rev Med Pharmacol Sci 2020; 23:4498-4506. [PMID: 31173327 DOI: 10.26355/eurrev_201905_17962] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aimed to investigate if propranolol could regulate ERK1/2 signaling pathway and promote chronic wound healing in diabetic rats. MATERIALS AND METHODS Twenty-two rats were used to establish a diabetic chronic wound animal model. They were randomly separated into two groups: the propranolol group and the control group. The propranolol group was treated with propranolol ointment and the control group was treated with propranolol matrix cream to cover the wound surface. The expression of the p-ERK1/2 protein was detected by the Western Blot. RT-qPCR was used to detect the expression of VEGF. The concentrations of IL-6 and TNF-α were detected by ELISA. RESULTS The body weight of rats was significantly reduced after type 2 diabetes mellitus modeling. The healing rate of rats in the control group was significantly lower than that in the propranolol group (p<0.05). There was a significant increase in the expression of the p-ERK1/2 protein in the wound tissue of the propranolol group compared with that in the control group, except for the 11th day (p<0.05). The relative expression of Vascular Endothelial Growth Factor (VEGF) in the propranolol group was significantly higher than that in the control group on the 2nd day (p<0.05), while the relative expression of VEGF in the propranolol group was significantly increased on the 11th day after modeling (p<0.05). On the 20th day, the expressions of IL-6 and TNF-α in the propranolol group were significantly higher than those in the control group, and there were significant differences (p<0.05). It was found that the IL-6 and TNF-α expressions in the propranolol group reached the peak on the 11th day and then gradually decreased (p<0.05). CONCLUSIONS The results indicated that propranolol can accelerate the healing of diabetic wounds by regulating the expression of VEGF by phosphorylation of ERK1/2 protein, thus promoting chronic wound healing in diabetes.
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Affiliation(s)
- X Chang
- Department of Endocrinology, Wuwei People's Hospital, Wuwei, P.R. China.
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Zhang T, Gao G, Chang F. miR-152 promotes spinal cord injury recovery via c-jun amino terminal kinase pathway. Eur Rev Med Pharmacol Sci 2020; 23:44-51. [PMID: 30657545 DOI: 10.26355/eurrev_201901_16746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this research is to explore the possible role of miR-152 in spinal cord injury and its underlying mechanism. MATERIALS AND METHODS After a mouse model of spinal cord injury (SCI) was developed, Real Time-quantitative Polymerase Chain Reaction (RT-qPCR) was used to detect the expression of miR-152 and c-jun in the mouse. In addition, the expression levels of interleukin-1b (IL-1b), interleukin-18 (IL-18) and tumor necrosis factor-α (TNF-α) were detected by enzyme-linked immunosorbent assay (ELISA). Subsequently, miR-152 was overexpressed and the levels of inflammation and c-jun after spinal cord injury were detected by Western blot. Furthermore, the grip strength of double forelimb, left forelimb or right forelimb of the mice was detected using a grip force test after miR-152 was overexpressed in the injured area of each group. RESULTS By constructing a mouse model of spinal cord injury, we found that the expression of miR-152 in the injured area decreased with time; meanwhile, the inflammatory relative genes including IL-1b, IL18, TNF-α, and c-jun were significantly increased. However, miR-152 overexpression significantly reduced the levels of inflammation genes as well as the expression of c-jun. Besides, the strength of the forelimbs in the spinal cord injury mice was restored. CONCLUSIONS MiR-152 could inhibit inflammatory responses and promote the recovery of the spinal cord injury through the c-jun N-terminal kinase pathway and it can be a target molecular for treating spinal cord injury.
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Affiliation(s)
- T Zhang
- Department of Orthopaedic Surgery, Affiliated Shanxi Provincial People's Hospital, Shanxi Medical University, Taiyuan, China.
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15
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Yu JB, Zhang HJ, Yan LW, Chang F, Jia ZW, Yang XR. [microRNA-16-5p targeted tetraspanin 15 gene to inhibit the proliferation, migration and invasion of osteosarcoma cell through phospoinositide 3-kinase/protein kinase B signaling pathway]. Zhonghua Yi Xue Za Zhi 2020; 100:1668-1675. [PMID: 32486604 DOI: 10.3760/cma.j.cn112137-20191101-02376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the effects of miR-16-5p on proliferation, migration and invasion of osteosarcoma cells and its mechanism. Methods: Quantitative polymerase chain reaction (qPCR) and Western blotting were used to detect the mRNA and protein expression of miR-16-5p and TSPAN15 in human normal osteoblasts hFOB 1.19 and osteosarcoma cells MG63, Saos2 and HOS. The miR-16-5p or si-TSPAN15 was transfected into MG63 cells to observe its role in cell proliferation, migration and invasion. Cell proliferation was measured with MTT assay, cell migration and invasion were examined by Transwell, and the protein expression of CyclinD1, matrix metalloproteinase 2 (MMP-2), MMP-9, tetraspanin 15 (TSPAN15), phospha-tidylinositol3-kinase(p-PI3K) and phospha-protein kinase B(p-AKT) were determined by using Western blotting. The starbase website prediction combined with dual luciferase gene reporter assay was performed to analyze the targeting relationship between miR-16-5p and TSPAN15. miR-16-5p and pcDNA-TSPAN1 were co-transfected to assess the effect of high expression of TSPAN15 on overexpression of miR-16-5p-induced proliferation, migration and invasion of MG63 cells. Data comparison between the two groups was performed by using t test. Results: Compared with hFOB 1.19 cells (1.00±0.12), the expression of miR-16-5p was significantly decreased in MG63, Saos2 and HOS cells (0.32±0.05, 0.40±0.04, 0.45±0.06, respectively)(F=156.204, P<0.05), and TSPAN15 mRNA and protein levels were greatly increased (F=71.718, 110.350, both P<0.05). Overexpression of miR-16-5p obviously reduced the expression of CyclinD1, MMP-2, MMP-9 protein, cell viability, cell migration and invasion (F=150.136,117.228, 154.971, 89.479, 98.373, 130.880, all P<0.05) in MG63 cells. Knockdown of TSPAN15 greatly reduced CyclinD1, MMP-2, MMP-9 protein levels, cell survival rate, cell migration, and invasion number (F=93.206, 107.030, 109.326, 115.625, 146.113, 139.300, all P<0.05). Overexpression of miR-16-5p markedly decreased the expression of p-PI3K and p-AKT protein in MG63 cells (F=156.755, 181.419, both P<0.05). miR-16-5p targeted to regulate the expression of TSPAN15. High expression of TSPAN15 partially reversed the inhibitory effect of miR-16-5p on TSPAN15, CyclinD1, MMP-2, MMP-9, p-PI3K, p-AKT protein expression, cell viability, cell migration number and invasion number in MG63 cells. Conclusion: miR-16-5p inhibits the proliferation, migration and invasion of osteosarcoma cells by targeting the TSPAN15 gene and regulating the PI3K/AKT signaling pathway.
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Affiliation(s)
- J B Yu
- Orthopedics Departmentof Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - H J Zhang
- Department of Nursing Surgery of Shanxi Health Vocational College, Taiyuan 030607, China
| | - L W Yan
- Orthopedics Department of Xinzhou People's Hospital, Xinzhou 034000, China
| | - F Chang
- Orthopedics Departmentof Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - Z W Jia
- Orthopedics Departmentof Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - X R Yang
- Department of Physiology, Shanxi Medical University, Taiyuan 030604, China
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Chang F, Li HZ, Zhang SY, Chen C, Liu C, Fan HY, Xing Y, Zahng QT, Cai WX. Working Memory of Patients with Mild Cognitive Impairment due to Brain Trauma Based on fNIRS. Fa Yi Xue Za Zhi 2020; 36:52-60. [PMID: 32250079 DOI: 10.12116/j.issn.1004-5619.2020.01.011] [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] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 11/30/2022]
Abstract
ABSTRACT Objective To discuss the activation characteristics of the prefrontal cortex of people with mild cognitive impairment (MCI) due to brain trauma during working memory tasks. Methods The psychological experiment design software E-prime was used and N-back paradigm was adopted as working memory task. Functional near-infrared spectroscopy (fNIRS) was used to detect changes in cortical oxygenated hemoglobin concentrations of 22 channels within the prefrontal lobe of 24 people with MCI due to brain trauma (study group) and 27 healthy volunteers (control group) with matching gender and age. Behavioral data, such as the number of keystroke errors and reaction time, were recorded simultaneously. Independent samples t test and non-parametric test were used to compare the mean value of oxygenated hemoglobin concentration change, the number of key errors and the mean value of reaction time of the two groups in each task. Results (1) The differences in the number of errors and reaction time between the two groups in 1-back and 2-back tasks had statistical significance (P<0.05).The main effects of task load and group were both significant (task F=14.11, P=0.001 1; group F=10.39, P=0.001 5). (2) During the 1-back task, the differences in oxygenated hemoglobin concentration changes of the 22 channels between the two groups had no statistical significance (P>0.05). During the 2-back task, the differences in oxygenated hemoglobin concentration changes of the two groups in channel 2, 3, 7, 9, 10, 11, 14, 15, 18, 19, 21 and 22 had statistical significance (P<0.05). (3) In the 1-back task, the left frontal pole and dorsolateral prefrontal area in both groups were activated. In the 2-back task, the activation areas of the control group were the left frontal pole area and the left dorsolateral prefrontal area, while that of the study group almost covered most of the left and right frontal pole areas, which were scattered and the right area was activated, too. Conclusion Patients with MCI due to brain trauma have obvious working memory impairment, and during the 2-back working memory task, the activation of the prefrontal lobe decreased, but the activation range was wider.
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Affiliation(s)
- F Chang
- School of Psychiatry, Wenzhou Medical University, Wenzhou 325035, Zhejiang Province, China.,Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - H Z Li
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - S Y Zhang
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - C Chen
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - C Liu
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - H Y Fan
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - Y Xing
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - Q T Zahng
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - W X Cai
- School of Psychiatry, Wenzhou Medical University, Wenzhou 325035, Zhejiang Province, China.,Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
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Wang XJ, Zhang ZH, Zhang J, Yu JP, An XJ, Zhou XS, Zhang HX, Liu F, Guo XS, Song JF, Chang F, Su YX, Li RS. [Malfunction of autophagy in tibial growth plate chondrocytes causes increased apoptosis rate in chronic renal insufficiency rats]. Zhonghua Yi Xue Za Zhi 2020; 100:141-145. [PMID: 31937055 DOI: 10.3760/cma.j.issn.0376-2491.2020.02.012] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the effect of autophagy of tibial growth plate chondrocyte on apoptosis in chronic renal insufficiency (CRI) rats. Methods: Male 4-week-old SD rats were randomly divided into two groups: (1) Sham group: only the left ureter was exposed (n=10); (2) CRI group: the left ureter was ligated to cause CRI (n=10). The urine from all the rats was collected 6 weeks after the operation and the total protein content was measured. Then all the rats were sacrificed and the concentrations of creatinine and urea nitrogen in intracardiac blood were detected. The proximal tibia were fixed and decalcified to prepare histological sections, and the number of chondrocytes of column cells in the proliferative area of tibia growth plate was observed by saffron O staining. The expression rate of protein Light Chain-3, an autophagy marker of chondrocytes, was detected by immunofluorescence. The apoptosis rate of chondrocytes was detected by the method of TUNEL assay. The level of glycogenin-1, a glycogen formation marker of chondrocyte was detected by immunohistochemistry in chondrocytes. Results: The 24 h urine total protein was higher in CRI group [(163.5±11.3) mg vs (38.6±9.8) mg, t=25.620, P<0.001]. The levels of blood creatinine [(67.3±16.2) μmol/L vs (28.4±11.5) μmol/L, t=5.974, P<0.001] and urea nitrogen [(16.4±6.4) mmol/L vs (4.8±2.0) mmol/L, t=5.198, P<0.001] were higher in CRI group. The number of chondrocytes of column cells in the proliferating area of tibia growth plate was lower in CRI group (4.2±2.1 vs 9.1±3.8, t=3.109, P=0.006). The expression rate of LC-3 protein in chondrocytes of CRI group was lower [(27.2±12.6)% vs (51.4±18.2)%, t=3.457, P=0.003]. The level of glycogenin-1 of chondrocytes in CRI group increased significantly (6.1±2.5 vs 3.5±1.8, t=2.669, P=0.016). The apoptosis rate of chondrocytes in CRI group also increased [(17.2±4.8)% vs (5.1±3.4)%, t=6.505, P<0.001]. Conclusion: Malfunction of autophagy in tibial growth plate chondrocytes causes increased apoptosis rate in CRI rats, which might be caused by the failure of glycogen degradation in chondrocytes.
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Affiliation(s)
- X J Wang
- Department of Orthopaedic Surgery, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - Z H Zhang
- Shanxi Health Vocational College, Taiyuan 030012, China
| | - J Zhang
- Department of Orthopaedic Surgery, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - J P Yu
- Department of Orthopaedic Surgery, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - X J An
- Department of Orthopaedic Surgery, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - X S Zhou
- Department of Nephrology, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - H X Zhang
- Department of Nephrology, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - F Liu
- Medical Information and Data Center, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - X S Guo
- Department of Orthopaedic Surgery, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - J F Song
- Department of Orthopaedic Surgery, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - F Chang
- Department of Orthopaedic Surgery, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - Y X Su
- Department of Orthopaedic Surgery, Shanxi Provincial People's Hospital, Taiyuan 030012, China
| | - R S Li
- Department of Nephrology, Shanxi Provincial People's Hospital, Taiyuan 030012, China
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Shen T, Chang F, Zhu F. [Advances in the research of severe burn-related corticosteroid insufficiency]. Zhonghua Shao Shang Za Zhi 2019; 35:884-887. [PMID: 31877613 DOI: 10.3760/cma.j.issn.1009-2587.2019.12.011] [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
Despite considerable advances in diagnosis and treatment of the critical illness-related corticosteroid insufficiency (CIRCI), it is still not clear that whether it is common in severe burn patients or not, and how clinical diagnosis, treatment, and research progress. Severe burn is a systemic disease involving the damage of multiple organs of the whole body. The course of the disease is relatively long, and there often exists persistent inflammation, immunosuppression, and catabolism. On the basis of CIRCI study, the epidemiological evidence, possible mechanism, suspicious clinical manifestations, diagnosis and treatment of severe burn-related corticosteroid insufficiency (SBRCI) were briefly reviewed in this article in order to help clinical diagnosis and treatment of SBRCI.
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Affiliation(s)
- T Shen
- Burn Institute of PLA, Department of Burn Surgery, the First Affiliated Hospital, Naval Medical University, Shanghai 200433, China
| | - F Chang
- Department of Burns and Plastic Surgery, Zhangjiagang First People's Hospital (Zhangjiagang Hospital Affiliated to Soochow University), Zhangjiagang 215600, China
| | - F Zhu
- Burn Institute of PLA, Department of Burn Surgery, the First Affiliated Hospital, Naval Medical University, Shanghai 200433, China
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Knight WRC, Yip C, Wulaningsih W, Jacques A, Griffin N, Zylstra J, Van Hemelrijck M, Maisey N, Gaya A, Baker CR, Kelly M, Gossage JA, Lagergren J, Landau D, Goh V, Davies AR, Ngan S, Qureshi A, Deere H, Green M, Chang F, Mahadeva U, Gill‐Barman B, George S, Dunn J, Zeki S, Meenan J, Hynes O, Tham G, Iezzi C. Prediction of a positive circumferential resection margin at surgery following neoadjuvant chemotherapy for adenocarcinoma of the oesophagus. BJS Open 2019; 3:767-776. [PMID: 31832583 PMCID: PMC6887675 DOI: 10.1002/bjs5.50211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/24/2019] [Indexed: 02/06/2023] Open
Abstract
Background A positive circumferential resection margin (CRM) has been associated with higher rates of locoregional recurrence and worse survival in oesophageal cancer. The aim of this study was to establish if clinicopathological and radiological variables might predict CRM positivity in patients who received neoadjuvant chemotherapy before surgery for oesophageal adenocarcinoma. Methods Multivariable analysis of clinicopathological and CT imaging characteristics considered potentially predictive of CRM was performed at initial staging and following neoadjuvant chemotherapy. Prediction models were constructed. The area under the curve (AUC) with 95% confidence intervals (c.i.) from 1000 bootstrapping was assessed. Results A total of 223 patients were included in the study. Poor differentiation (odds ratio (OR) 2·84, 95 per cent c.i. 1·39 to 6·01) and advanced clinical tumour status (T3-4) (OR 2·93, 1·03 to 9·48) were independently associated with an increased CRM risk at diagnosis. CT-assessed lack of response (stable or progressive disease) following chemotherapy independently corresponded with an increased risk of CRM positivity (OR 3·38, 1·43 to 8·50). Additional CT evidence of local invasion and higher CT tumour volume (14 cm3) improved the performance of a prediction model, including all the above parameters, with an AUC (c-index) of 0·76 (0·67 to 0·83). Variables associated with significantly higher rates of locoregional recurrence were pN status (P = 0·020), lymphovascular invasion (P = 0·007) and poor response to chemotherapy (Mandard score 4-5) (P = 0·006). CRM positivity was associated with a higher locoregional recurrence rate, but this was not statistically significant (P = 0·092). Conclusion The presence of advanced cT status, poor tumour differentiation, and CT-assessed lack of response to chemotherapy, higher tumour volume and local invasion can be used to identify patients at risk of a positive CRM following neoadjuvant chemotherapy.
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Affiliation(s)
- W. R. C. Knight
- Department of Surgery, Guy's and St Thomas' Oesophago‐Gastric Centre, King's College London
- School of Cancer and Pharmaceutical Sciences, King's College London
| | - C. Yip
- School of Biomedical Engineering and Imaging Sciences, King's College London
| | - W. Wulaningsih
- Cancer Epidemiology and Population Health Associated Research Group, King's College London
| | - A. Jacques
- Department of Radiology, Guy's and St Thomas' Hospital, London, UK
| | - N. Griffin
- Department of Radiology, Guy's and St Thomas' Hospital, London, UK
| | - J. Zylstra
- Department of Surgery, Guy's and St Thomas' Oesophago‐Gastric Centre, King's College London
| | - M. Van Hemelrijck
- Cancer Epidemiology and Population Health Associated Research Group, King's College London
| | - N. Maisey
- Department of Oncology, Guy's and St Thomas' Hospital, London, UK
| | - A. Gaya
- Department of Oncology, Guy's and St Thomas' Hospital, London, UK
| | - C. R. Baker
- Department of Surgery, Guy's and St Thomas' Oesophago‐Gastric Centre, King's College London
| | - M. Kelly
- Department of Surgery, Guy's and St Thomas' Oesophago‐Gastric Centre, King's College London
| | - J. A. Gossage
- Department of Surgery, Guy's and St Thomas' Oesophago‐Gastric Centre, King's College London
- School of Cancer and Pharmaceutical Sciences, King's College London
- Upper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - J. Lagergren
- Department of Surgery, Guy's and St Thomas' Oesophago‐Gastric Centre, King's College London
- School of Cancer and Pharmaceutical Sciences, King's College London
- Upper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - D. Landau
- Department of Oncology, Guy's and St Thomas' Hospital, London, UK
| | - V. Goh
- School of Biomedical Engineering and Imaging Sciences, King's College London
- Cancer Epidemiology and Population Health Associated Research Group, King's College London
| | - A. R. Davies
- Department of Surgery, Guy's and St Thomas' Oesophago‐Gastric Centre, King's College London
- School of Cancer and Pharmaceutical Sciences, King's College London
- Upper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
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Zhao WB, Fu H, Chang F, Liu J, Wang J, Li F, Zhao J. Effects of various doses of atorvastatin on vascular endothelial cell apoptosis and autophagy in vitro. Mol Med Rep 2019; 19:1919-1925. [PMID: 30628690 DOI: 10.3892/mmr.2019.9828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 01/26/2018] [Indexed: 11/06/2022] Open
Abstract
Atorvastatin (Lipitor™) is a lipid‑lowering agent that is widely used in the treatment of cardiovascular diseases. Previous research has largely focused on its cholesterol‑lowering effects; however, a limited number of studies have investigated the actions of atorvastatin on vascular endothelial cells. In the present study, the effects of various doses of atorvastatin were investigated on human umbilical vein endothelial cells (HUVECs). HUVECs were treated with various concentrations of atorvastatin in serum‑free or serum‑containing medium, and alterations in HUVEC morphology were observed. Cell survival and necrosis rates were evaluated using sulforhodamine B and lactate dehydrogenase assays, respectively. In addition, the protein expression levels of cellular apoptosis and autophagy markers were detected using western blot analysis. The results revealed that HUVEC morphology was altered following treatment with various concentrations of atorvastatin. In addition, autophagy was demonstrated to be induced by atorvastatin treatment at all concentrations, whereas high concentrations appeared to induce apoptosis and suppress the survival of HUVECs. In conclusion, the results of the present study suggested that various doses of atorvastatin may exert differential effects on HUVECs, and high doses may suppress angiogenesis. Therefore, atorvastatin may present a novel potential anti‑tumor therapeutic strategy. However, further studies are required to fully elucidate the association between the dose of atorvastatin and its clinical outcome.
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Affiliation(s)
- Wen-Bo Zhao
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Hui Fu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, Shandong 250100, P.R. China
| | - Fen Chang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, Shandong 250100, P.R. China
| | - Jing Liu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, Shandong 250100, P.R. China
| | - Jinlan Wang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, Shandong 250100, P.R. China
| | - Fang Li
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, Shandong 250100, P.R. China
| | - Jing Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, Shandong 250100, P.R. China
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Ge D, Gao J, Han L, Li Y, Liu HH, Yang WC, Chang F, Liu J, Yu M, Zhao J. Novel effects of sphingosylphosphorylcholine on the apoptosis of breast cancer via autophagy/AKT/p38 and JNK signaling. J Cell Physiol 2018; 234:11451-11462. [PMID: 30488428 DOI: 10.1002/jcp.27802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 11/01/2018] [Indexed: 12/27/2022]
Abstract
Sphingosylphosphorylcholine (SPC), an important lipid mediator in blood, inhibits the proliferation and migration of various cancer cells. However, its effect as a cell-specific sphingolipid in breast cancer cells is still unknown. Here, we showed that SPC promoted autophagy and apoptosis in triple-negative breast cancer MDA-MB-231 cells. Autophagy worked as a negative regulator of apoptosis-induced by SPC. Mechanistically, SPC mediated apoptosis via activating c-Jun N-terminal kinase (JNK). Meanwhile, p38MAPK (p38) and protein kinase B (PKB or AKT) signaling pathways were also activated to inhibit apoptosis, suggesting that SPC could evoke multiple signaling pathways to modulate cell apoptosis. In addition, the crosstalk between autophagy, p38, AKT and JNK is that autophagy, p38, and AKT attenuated the JNK. AKT and p38 were in the downstream of autophagy, which is autophagy/AKT/p38 signaling evoked by SPC to antagonize JNK signaling and subsequent apoptosis. Although the pathways that antagonize apoptosis were evoked, the cells eventually reached apoptosis by SPC. Therefore, the combination with pharmacological autophagy inhibitors would be a more effective therapeutic strategy for eliminating breast cancer cells by SPC.
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Affiliation(s)
- Di Ge
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, China.,School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Jia Gao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, China
| | - Lina Han
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Ying Li
- Jinan Central Hospital Affiliated to Shandong University, Jinan, China
| | - Hong-Hong Liu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, China
| | - Wan-Cheng Yang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, China
| | - Fen Chang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, China
| | - Jing Liu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, China
| | - Mei Yu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, China
| | - Jing Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, China
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Liu F, Cao L, Zhang T, Chang F, Xu Y, Li Q, Deng J, Li L, Shao G. CRL4B RBBP7 targets HUWE1 for ubiquitination and proteasomal degradation. Biochem Biophys Res Commun 2018; 501:440-447. [PMID: 29738775 DOI: 10.1016/j.bbrc.2018.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 05/02/2018] [Indexed: 10/16/2022]
Abstract
The E3 ubiquitin ligase HUWE1/Mule/ARF-BP1 plays an important role in diverse biological processes including DNA damage repair and apoptosis. Our previous study has shown that in response to DNA damage HUWE1 was downregulated in CUL4B-mediated ubiquitination and subsequent proteasomal degradation, and CUL4B-mediated regulation of HUWE1 was important for cell survival upon DNA damage. CUL4B is a core component of the CUL4B Ring ligase complexes containing ROC1, DDB1 and a DDB1-Cullin Associated Factors (DCAFs), the latter of which are DDB1-binding WD40 adaptors critical for substrate recognition and recruitment. However, the identity of DCAF in CRL4B that mediates degradation of HUWE1 remains elusive. Here we report that RBBP7 is the DCAF in the CRL4B complex bridging the DDB1-CUL4B-ROC1 to HUWE1. Loading of HUWE1 to the E3 ubiquitin ligase complex resulted in its polyubiquitination, and consequently its proteasome mediated degradation. Overexpression of RBBP7 promoted HUWE1 protein degradation, while depletion of RBBP7 stabilized HUWE1, and hence accelerated the degradation of MCL-1 and BRCA1, two substrates of HUWE1 that are critical in apoptosis and DNA damage repair. Taken together, these data reveal CRL4BRBBP7 is the E3 ligase responsible for the proteasomal degradation of HUWE1, and further provide a potential strategy for cancer therapy by targeting HUWE1 and the CUL4B E3 ligase complex.
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Affiliation(s)
- Fei Liu
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China; Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Li Cao
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Ting Zhang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Fen Chang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Yongjie Xu
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Qin Li
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Jingcheng Deng
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Li Li
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China
| | - Genze Shao
- Department of Cell Biology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, 100191, China.
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Chang F, Xiong W, Wang D, Liu XZ, Zhang W, Zhang M, Jing P. Facilitation of ultrasonic microvesicles on homing and molecular mechanism of bone marrow mesenchymal stem cells in cerebral infarction patients. Eur Rev Med Pharmacol Sci 2017; 21:3916-3923. [PMID: 28975970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE Cerebral infarction, or ischemia brain stroke, is a common cerebrovascular disease. Bone marrow mesenchymal stem cells (BMSCs) are widely used to treating ischemia disease such as cardiac infarction. Ultrasonic microvesicles may help the targeting of exogenous factors via localized energy blast. Therefore, this study aims to investigate the effect of ultrasonic microvesicles on the homing of BMSCs on artery thrombosis and the associated molecular mechanisms. MATERIALS AND METHODS Rat BMSCs were isolated and cultured. Rats were divided into sham, model, BMSCs, and microvesicles groups. Cerebral infarction model was prepared by ligation of cervical artery and middle cerebral artery. 3×106/kg BMSCs were transplanted via tail veins. Microvesicles were used for assisting BMSCs infusion. Sex-determining region Y (SRY) gene expression was measured by Real-time PCR, while 2,3,5-triphenyltetrazolium chloride (TTC) staining was employed for describing the area of cerebral infarction. The activity of caspase 3 was assayed by test kit. Vascular endothelial growth factor (VEGF), nuclear factor kappa B (NF-κB) mRNA/protein levels, were quantified by Real-time PCR, and Western blotting, respectively. RESULTS Microvesicle group had significantly elevated SRY expression (p<0.05 compared to BMSCs group). Transplantation of BMSCs remarkably decreased cerebral infarction area, caspase 3 activity or NF-κB expression, and increased VEGF expression (p<0.05 compared to model group). Microvesicle induced BMSCs had more potent effects (p<0.01). CONCLUSIONS Ultrasound microvesicle facilitated homing of BMSCs in cerebral infarction, and improved infarction disease via up-regulating VEGF expression, inhibiting NF-κB expression, and modulating apoptosis.
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Affiliation(s)
- F Chang
- Department of Neurology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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Yi P, Tsai C, Chang F. 0076 TWO NOVEL ADENOSINE ANALOGUES AS HYPNOTICS. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.075] [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: 11/12/2022] Open
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25
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Yamashita A, Murakami T, Kadowaki S, Yoshida K, Ito E, Matsuda N, Chang F, Hattori N, Miyai I, Ugawa Y. Spike-timing dependent plasticity at spinal motoneurons. Brain Stimul 2017. [DOI: 10.1016/j.brs.2017.01.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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26
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Liu J, Fu H, Chang F, Wang J, Zhang S, Caudle Y, Zhao J, Yin D. Sodium orthovanadate suppresses palmitate-induced cardiomyocyte apoptosis by regulation of the JAK2/STAT3 signaling pathway. Apoptosis 2016; 21:546-57. [PMID: 26921179 DOI: 10.1007/s10495-016-1231-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Elevated circulatory free fatty acids (FFAs) especially saturated FFAs, such as palmitate (PA), are detrimental to the heart. However, mechanisms responsible for this phenomenon remain unknown. Here, the role of JAK2/STAT3 in PA-induced cytotoxicity was investigated in cardiomyocytes. We demonstrate that PA suppressed the JAK2/STAT3 pathway by dephosphorylation of JAK2 (Y1007/1008) and STAT3 (Y705), and thus blocked the translocation of STAT3 into the nucleus. Conversely, phosphorylation of S727, another phosphorylated site of STAT3, was increased in response to PA treatment. Pretreatment of JNK inhibitor, but not p38 MAPK inhibitor, inhibited STAT3 (S727) activation induced by PA and rescued the phosphorylation of STAT3 (Y705). The data suggested that JNK may be another upstream factor regulating STAT3, and verified the important function of P-STAT3 (Y705) in PA-induced cardiomyocyte apoptosis. Sodium orthovanadate (SOV), a protein tyrosine phosphatase inhibitor, obviously inhibited PA-induced apoptosis by restoring JAK2/STAT3 pathways. This effect was diminished by STAT3 inhibitor Stattic. Collectively, our data suggested a novel mechanism that the inhibition of JAK2/STAT3 activation was responsible for palmitic lipotoxicity and SOV may act as a potential therapeutic agent by targeting JAK2/STAT3 in lipotoxic cardiomyopathy treatment.
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Affiliation(s)
- Jing Liu
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, People's Republic of China
| | - Hui Fu
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, People's Republic of China
| | - Fen Chang
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, People's Republic of China
| | - Jinlan Wang
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, People's Republic of China
| | - Shangli Zhang
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, People's Republic of China
| | - Yi Caudle
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City, TN, 37614, USA
| | - Jing Zhao
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, People's Republic of China.
| | - Deling Yin
- School of Pharmacy, Central South University, Changsha, 410023, People's Republic of China.
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City, TN, 37614, USA.
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Chang F, Wang P, Tsai P, Lee S, Yeh C, Fan K, Chang J. SU-F-T-597: Modeling and Evaluation of RapidPlan for Simultaneous Integrated Boost NPC Cases. Med Phys 2016. [DOI: 10.1118/1.4956782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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28
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Wang J, Zhang Z, Chang F, Yin D. Bioinformatics analysis of the structural and evolutionary characteristics for toll-like receptor 15. PeerJ 2016; 4:e2079. [PMID: 27257554 PMCID: PMC4888287 DOI: 10.7717/peerj.2079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/03/2016] [Indexed: 12/21/2022] Open
Abstract
Toll-like receptors (TLRs) play important role in the innate immune system. TLR15 is reported to have a unique role in defense against pathogens, but its structural and evolution characterizations are still poorly understood. In this study, we identified 57 completed TLR15 genes from avian and reptilian genomes. TLR15 clustered into an individual clade and was closely related to family 1 on the phylogenetic tree. Unlike the TLRs in family 1 with the broken asparagine ladders in the middle, TLR15 ectodomain had an intact asparagine ladder that is critical to maintain the overall shape of ectodomain. The conservation analysis found that TLR15 ectodomain had a highly evolutionarily conserved region on the convex surface of LRR11 module, which is probably involved in TLR15 activation process. Furthermore, the protein-protein docking analysis indicated that TLR15 TIR domains have the potential to form homodimers, the predicted interaction interface of TIR dimer was formed mainly by residues from the BB-loops and αC-helixes. Although TLR15 mainly underwent purifying selection, we detected 27 sites under positive selection for TLR15, 24 of which are located on its ectodomain. Our observations suggest the structural features of TLR15 which may be relevant to its function, but which requires further experimental validation.
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Affiliation(s)
- Jinlan Wang
- Institute of Developmental Biology, School of Life Science, Shandong University , Jinan , China
| | - Zheng Zhang
- State Key Laboratory of Microbial Technology, School of Life Science, Shandong University , Jinan , China
| | - Fen Chang
- Institute of Developmental Biology, School of Life Science, Shandong University , Jinan , China
| | - Deling Yin
- School of Pharmacy, Central South University, Changsha, China; Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson, TN, USA
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Wang J, Zhang Z, Fu H, Zhang S, Liu J, Chang F, Li F, Zhao J, Yin D. Structural and evolutionary characteristics of fish-specific TLR19. Fish Shellfish Immunol 2015; 47:271-279. [PMID: 26363234 DOI: 10.1016/j.fsi.2015.09.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 08/28/2015] [Accepted: 09/01/2015] [Indexed: 06/05/2023]
Abstract
Toll-like receptors (TLRs) are important pattern recognition receptors in the innate immune system of fish. Although ten years have passed since the first identification, the systematic knowledge about fish-specific TLR19 is still far insufficient. In present study, a phylogenetic analysis showed that TLR19 belonged to family 11, and clustered with TLR20 and TLR11/12 on the evolutionary tree. TLR20 is the closest paralogue of TLR19. The ectodomain of TLR19 contains 24 leucine-rich repeat (LRR) modules. The electrostatic surface potential analysis indicated that the modeled structure of TLR19 ectodomain showed much stronger polarity on the ascending lateral surface than on the descending lateral surface. The ascending lateral surface with strong electrostatic surface potential possibly mainly participates in the ligand binding of TLR19 ectodomain. The quite small dN/dS value at the TLR19 locus showed that TLR19 was very conserved. Approximately one third codons in the coding sequence of TLR19 were subjected to significantly negative selection, whereas only 5 codons underwent significantly positive selection. Overall, these findings possibly help in deepening the understanding to fish-specific TLR19.
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Affiliation(s)
- Jinlan Wang
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Zheng Zhang
- State Key Laboratory of Microbial Technology, School of Life Science, Shandong University, Jinan 250100, PR China.
| | - Hui Fu
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Shangli Zhang
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Jing Liu
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Fen Chang
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Fang Li
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Jing Zhao
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Deling Yin
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA.
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Chen J, Shen Y, Tsai P, Lee S, Wang P, Chang F, Liu Y, Chang J. 632 Dosimetric comparison of volumetric modulated arc therapy and proton pencil beam scanning technique under deep inspiration breath hold. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30368-9] [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: 10/22/2022]
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31
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Yue HW, Liu J, Liu PP, Li WJ, Chang F, Miao JY, Zhao J. Sphingosylphosphorylcholine protects cardiomyocytes against ischemic apoptosis via lipid raft/PTEN/Akt1/mTOR mediated autophagy. Biochim Biophys Acta Mol Cell Biol Lipids 2015; 1851:1186-93. [DOI: 10.1016/j.bbalip.2015.04.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/30/2015] [Accepted: 04/03/2015] [Indexed: 10/23/2022]
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Wang J, Zhang Z, Liu J, Li F, Chang F, Fu H, Zhao J, Yin D. Structural characterization and evolutionary analysis of fish-specific TLR27. Fish Shellfish Immunol 2015; 45:940-945. [PMID: 26093204 DOI: 10.1016/j.fsi.2015.06.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 06/02/2015] [Accepted: 06/13/2015] [Indexed: 06/04/2023]
Abstract
Toll-like receptors (TLRs) are critical components of the innate immune response of fish. In a phylogenetic analysis, TLR27 from three fish species, which belongs to TLR family 1, clustered with TLR14/18 and TLR25 on the evolutionary tree. The ectodomain of TLR27 is predicted to include 19 leucine-rich repeat (LRR) modules. Structural modeling showed that the TLR27 ectodomain can be divided into three distinctive sections. The lack of conserved asparagines on the concave surface of the central subdomain causes a structural transition in the middle of the ectodomain, forming a distinct hydrophobic pocket at the border between the central subdomain and the C-terminal subdomain. We infer that, like other functionally characterized TLRs in family 1, the hydrophobic pocket located between LRR11 and LRR12 participates in ligand recognition by TLR27. An evolutionary analysis showed that the dN/dS value at the TLR27 locus was very low. Approximately one quarter of the total number of TLR27 sites are under significant negatively selection pressure, whereas only two sites are under positive selection. Consequently, TLR27 is highly evolutionarily conserved and probably plays an extremely important role in the innate immune systems of fishes.
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Affiliation(s)
- Jinlan Wang
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Zheng Zhang
- State Key Laboratory of Microbial Technology, School of Life Science, Shandong University, Jinan 250100, PR China.
| | - Jing Liu
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Fang Li
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Fen Chang
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Hui Fu
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Jing Zhao
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan 250100, PR China
| | - Deling Yin
- Department of Internal Medicine, College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA.
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Zhao J, Liu J, Denney J, Li C, Li F, Chang F, Chen M, Yin D. TLR2 Involved in Naive CD4+ T Cells Rescues Stress-Induced Immune Suppression by Regulating Th1/Th2 and Th17. Neuroimmunomodulation 2015; 22:328-36. [PMID: 25721027 DOI: 10.1159/000371468] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 12/05/2014] [Indexed: 11/19/2022] Open
Abstract
Stress, either physical or psychological, can have a dramatic impact on our immune system. There has been little progress, however, in understanding chronic stress-induced immunosuppression. Naive CD4+ T cells could modulate immune responses via differentiation to T helper (Th) cells. In this study, we showed that stress promotes the release of the Th1 cytokines interferon (IFN)-γ and tumor necrosis factor (TNF)-α, the Th2 cytokines interleukin (IL)-4 and IL-10 and the Th17 cytokine IL-17 of splenic naive CD4+ T cells. This suggests that stress promotes the differentiation of naive CD4+ T cells to Th1, Th2 and Th17 cells. Knockout strategies verified that TLR2 might modulate the differentiation of Th1/Th2 cells by inhibiting p38 mitogen-activated protein kinase (MAPK). Taken together, our data suggest that chronic stress induces immune suppression by targeting TLR2 and p38 MAPK in naive CD4+ T cells.
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Affiliation(s)
- Jing Zhao
- Institute of Developmental Biology, School of Life Science, Shandong University, Jinan, China
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Chiu C, Yang C, Shih J, Huang M, Su W, Lai R, Wang C, Hsiao S, Lin Y, Ho C, Wu M, Hsia T, Lai C, Lee K, Lin C, Chang F, Chuang C, Yeh D, Perng R. Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitor Treatment Response in Advanced Non-Small Cell Lung Cancer with G719X/L861Q/S768I Mutations. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu349.7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lai I, Shiau C, Hu Y, Wong T, Ho D, Chang K, Chang F, Liang M, Lee Y, Chen H, Yen S, Chen Y. Treatment Results and Prognostic Factors for Intracranial Non-germinomatous Germ Cell Tumors: Single Institute Experience. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2107] [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: 10/24/2022]
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Zhou L, Lu Y, Vitale CJ, Mar PL, Chang F, Dhopeshwarkar N, Rocha RA. Representation of information about family relatives as structured data in electronic health records. Appl Clin Inform 2014; 5:349-67. [PMID: 25024754 DOI: 10.4338/aci-2013-10-ra-0080] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 02/11/2014] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The ability to manage and leverage family history information in the electronic health record (EHR) is crucial to delivering high-quality clinical care. OBJECTIVES We aimed to evaluate existing standards in representing relative information, examine this information documented in EHRs, and develop a natural language processing (NLP) application to extract relative information from free-text clinical documents. METHODS We reviewed a random sample of 100 admission notes and 100 discharge summaries of 198 patients, and also reviewed the structured entries for these patients in an EHR system's family history module. We investigated the two standards used by Stage 2 of Meaningful Use (SNOMED CT and HL7 Family History Standard) and identified coverage gaps of each standard in coding relative information. Finally, we evaluated the performance of the MTERMS NLP system in identifying relative information from free-text documents. RESULTS The structure and content of SNOMED CT and HL7 for representing relative information are different in several ways. Both terminologies have high coverage to represent local relative concepts built in an ambulatory EHR system, but gaps in key concept coverage were detected; coverage rates for relative information in free-text clinical documents were 95.2% and 98.6%, respectively. Compared to structured entries, richer family history information was only available in free-text documents. Using a comprehensive lexicon that included concepts and terms of relative information from different sources, we expanded the MTERMS NLP system to extract and encode relative information in clinical documents and achieved a corresponding precision of 100% and recall of 97.4%. CONCLUSIONS Comprehensive assessment and user guidance are critical to adopting standards into EHR systems in a meaningful way. A significant portion of patients' family history information is only documented in free-text clinical documents and NLP can be used to extract this information.
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Affiliation(s)
- L Zhou
- Clinical Informatics, Partners eCare, Partners HealthCare System , Boston, MA ; Division of General Internal Medicine and Primary Care, Brigham and Women's Hospital , Boston, MA ; Harvard Medical School , Boston, MA
| | - Y Lu
- Clinical Informatics, Partners eCare, Partners HealthCare System , Boston, MA
| | - C J Vitale
- Clinical Informatics, Partners eCare, Partners HealthCare System , Boston, MA
| | - P L Mar
- Clinical Informatics, Partners eCare, Partners HealthCare System , Boston, MA ; Division of General Internal Medicine and Primary Care, Brigham and Women's Hospital , Boston, MA ; Harvard Medical School , Boston, MA
| | - F Chang
- Clinical Informatics, Partners eCare, Partners HealthCare System , Boston, MA
| | - N Dhopeshwarkar
- Clinical Informatics, Partners eCare, Partners HealthCare System , Boston, MA
| | - R A Rocha
- Clinical Informatics, Partners eCare, Partners HealthCare System , Boston, MA ; Division of General Internal Medicine and Primary Care, Brigham and Women's Hospital , Boston, MA ; Harvard Medical School , Boston, MA
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Saldanha L, Dwyer J, Bailen R, Andrews K, Bailey R, Betz J, Burt V, Chang F, Costello R, Emenaker N, Gahche J, Harnly J, Hardy C, Pehrsson P. When a dietary supplement product name says “energy”, what’s in the bottle? (634.1). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.634.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - J Dwyer
- ODS/NIHBETHESDAMDUnited States
| | | | | | | | - J Betz
- ODS/NIHBETHESDAMDUnited States
| | - V Burt
- NHANES/CDCHyattsvilleMDUnited States
| | - F Chang
- NLM/NIHBETHESDAMDUnited States
| | | | | | - J Gahche
- NHANES/CDCHyattsvilleMDUnited States
| | - J Harnly
- ARS/USDABeltsvilleMDUnited States
| | - C Hardy
- CFSAN/FDACollege ParkMDUnited States
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Potthoff P, Gargani L, Agoston G, Moreo A, Pingitore A, Lombardi M, Varga A, Sicari R, Picano E, Hu K, Liu D, Niemann M, Herrmann S, Cikes M, Gaudron P, Knop S, Ertl G, Bijnens B, Weidemann F, Orii M, Hirata K, Yamano T, Tanimoto T, Ino Y, Yamaguchi T, Kubo T, Imanishi T, Akasaka T, Addetia K, Patel A, Spencer K, Mor-Avi V, Lang R, Yu WC, Liao J, Chang F, Niu D. Oral Abstract session * The importance of cardiac imaging in systemic diseases: 12/12/2013, 08:30-10:00 * Location: Bursa. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet218] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yi P, Chang F. Amygdala opioid receptors mediate the electroacupuncture-induced deterioration of sleep disruptions in epilepsy rats. Sleep Med 2013. [DOI: 10.1016/j.sleep.2013.11.756] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chang F, Seguin J, Gupta N, Munoz C, Stringer D. Health and wealth awareness and assessment in rural Ontario. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wang P, Hsu W, Chung N, Chang F, Fogliata A, Cozzi L. Results From a Phase II Non-randomized Trial on 145 Patients With Hepatocellular Carcinoma Treated With Volumetric Modulated Arc Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.879] [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: 10/27/2022]
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Beall S, Moon K, Widra E, DeCherney A, Chang F, Richter K. Matched samples comparison of in vitro fertilization (IVF) clinical outcomes associated with leuprolide acetate (LA) versus human chorionic gonadotropin (hCG) trigger for oocyte maturation. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Beall S, Moon K, Widra E, Segars J, Chang F, Richter K. Human chorionic gonadotropin (hCG) re-trigger following a poor response to leuprolide acetate (LA) trigger is not associated with poor in vitro fertilization (IVF) treatment outcomes. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Chang F, Lei T, Wong ACM. Improved Likelihood Inference on Testing the Difference of Non Centrality Parameters of Two Independent Non central tDistributions with Identical Degrees of Freedom. COMMUN STAT-SIMUL C 2012. [DOI: 10.1080/03610918.2011.585005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Botha AJ, Odendaal W, Patel V, Watcyn-Jones T, Mahadeva U, Chang F, Deere H. Total adventitial resection of the cardia: 'optimal local resection' for tumours of the oesophagogastric junction. Ann R Coll Surg Engl 2011; 93:608-14. [PMID: 22041237 PMCID: PMC3566686 DOI: 10.1308/003588411x13165261994111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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] [Accepted: 07/18/2011] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Little is published about the local resection of oesophageal cancers. We adopted the principles of rectal cancer surgery, ie standard surgical dissection techniques as well as standard pathological processing and reporting, and assessed the feasibility of applying them to oesophagogastric junction (OGJ) cancer. METHODS Over a two-year period consecutive patients with invasive cancers of the OGJ were studied. Following staging and neoadjuvant chemotherapy (NAC), a standard dissection defined as a total adventitial resection of the cardia (TARC) was performed. Standard histopathological processing involved external inking, photographing, transverse slicing and mounting of cut samples on megablocks. Hospital morbidity and mortality as well as survival at five years' follow-up were assessed. RESULTS Forty consecutive patients had a TARC for OGJ carcinoma. Of these, 32 were offered NAC. Introducing TARC did not result in increased morbidity or mortality. Twenty-seven patients (68%) had an R0 resection that was directly related to the tumour stage and significantly related to a response to chemotherapy. Sixteen patients (42%) were alive five years after their TARC operation. CONCLUSIONS Although the adventitia of the OGJ is not as well developed as that of the rectum, TARC can be performed safely as a standardised resection for OGJ cancers. Whereas the R0 rate for early stage tumours is very high, it remains disappointingly low for T3N1 tumours despite NAC. Improved long-term survival for these advanced tumours will only be achieved with better neoadjuvant and adjuvant therapies.
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Affiliation(s)
- A J Botha
- Guy's and St Thomas' NHS Foundation Trust, London, UK.
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Hartman L, Shafer MA, Pollack L, Wibbelsman C, Chang F, Tebb K. P2-S1.05 Parental acceptability of contraceptive methods offered to their teen during a confidential healthcare visit. Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.283] [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: 11/04/2022]
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Nishino T, Chang F, Ishii T, Yanai T, Mishima H, Ochiai N. Joint distraction and movement for repair of articular cartilage in a rabbit model with subsequent weight-bearing. ACTA ACUST UNITED AC 2010; 92:1033-40. [DOI: 10.1302/0301-620x.92b7.23200] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We have previously shown that joint distraction and movement with a hinged external fixation device for 12 weeks was useful for repairing a large articular cartilage defect in a rabbit model. We have now investigated the results after six months and one year. The device was applied to 16 rabbits who underwent resection of the articular cartilage and subchondral bone from the entire tibial plateau. In group A (nine rabbits) the device was applied for six months. In group B (seven rabbits) it was in place for six months, after which it was removed and the animals were allowed to move freely for an additional six months. The cartilage remained sound in all rabbits. The areas of type II collagen-positive staining and repaired soft tissue were larger in group B than in group A. These findings provide evidence of long-term persistence of repaired cartilage with this technique and that weight-bearing has a positive effect on the quality of the cartilage.
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Affiliation(s)
- T. Nishino
- Department of Orthopaedic Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - F. Chang
- Department of Orthopaedic Surgery China-Japan Union Hospital of Jilin University, 126 Xian Tai Street, Changchun, Jilin 130033, China
| | - T. Ishii
- Department of Orthopaedic Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - T. Yanai
- Department of Orthopaedic Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - H. Mishima
- Department of Orthopaedic Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - N. Ochiai
- Department of Orthopaedic Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
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Abstract
We propose and simulate a photovoltaic solar cell comprised of Si and Ge pn junctions in tandem. With an anti-reflection film at the front surface, we have shown that optimal solar cells favor a thin Si layer and a thick Ge layer with a thin tunnel hetero-diode placed in between. We predict efficiency ranging from 19% to 28% for AM1.5G solar irradiance concentrated from 1 approximately 1000 Suns for a cell with a total thickness approximately 100 microm.
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Affiliation(s)
- G Sun
- Department of Physics, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA 02125, USA.
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