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Zhang L, Wang L, Ji D, Xia Z, Nan P, Zhang J, Li K, Qi B, Du R, Sun Y, Wang Y, Hu B. Explainable ensemble machine learning revealing the effect of meteorology and sources on ozone formation in megacity Hangzhou, China. Sci Total Environ 2024; 922:171295. [PMID: 38417501 DOI: 10.1016/j.scitotenv.2024.171295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/23/2024] [Accepted: 02/25/2024] [Indexed: 03/01/2024]
Abstract
Megacity Hangzhou, located in eastern China, has experienced severe O3 pollution in recent years, thereby clarifying the key drivers of the formation is essential to suppress O3 deterioration. In this study, the ensemble machine learning model (EML) coupled with Shapley additive explanations (SHAP), and positive matrix factorization were used to explore the impact of various factors (including meteorology, chemical components, sources) on O3 formation during the whole period, pollution days, and typical persistent pollution events from April to October in 2021-2022. The EML model achieved better performance than the single model, with R2 values of 0.91. SHAP analysis revealed that meteorological conditions had the greatest effects on O3 variability with the contribution of 57 %-60 % for different pollution levels, and the main drivers were relative humidity and radiation. The effects of chemical factors on O3 formation presented a positive response to volatile organic compounds (VOCs) and fine particulate matter (PM2.5), and a negative response to nitrogen oxides (NOx). Oxygenated compounds (OVOCs), alkenes, and aromatic of VOCs subgroups had higher contribution; additionally, the effects of PM2.5 and NOx were also important and increased with the O3 deterioration. The impact of seven emission sources on O3 formation in Hangzhou indicated that vehicle exhaust (35 %), biomass combustion (16 %), and biogenic emissions (12 %) were the dominant drivers. However, for the O3 pollution days, the effects of biomass combustion and biogenic emissions increased. Especially in persistent pollution events with highest O3 concentrations, the magnitude of biogenic emission effect elevated significantly by 156 % compared to the whole situations. Our finding revealed that the combination of the EML model and SHAP analysis could provide a reliable method for rapid diagnosis of the cause of O3 pollution at different event scales, supporting the formulation of control measures.
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Affiliation(s)
- Lei Zhang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Lili Wang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; Zhejiang Key Laboratory of Ecological and Environmental Big Data (2022P10005), Zhejiang Ecological and Environmental Monitoring Center, Hangzhou 310012, China; Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - Dan Ji
- Suichang Meteorological Bureau, Suichang 323000, China
| | - Zheng Xia
- Zhejiang Key Laboratory of Ecological and Environmental Big Data (2022P10005), Zhejiang Ecological and Environmental Monitoring Center, Hangzhou 310012, China; Zhejiang Key Laboratory of Ecological and Environmental Monitoring, Forewarning and Quality Control, Hangzhou 310012, China
| | - Peifan Nan
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; College of Resources Environment and Tourism, Capital Normal University, Beijing 100048, China
| | - Jiaxin Zhang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Ke Li
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Bing Qi
- Hangzhou Meteorological Bureau, Hangzhou 310051, China
| | - Rongguang Du
- Hangzhou Meteorological Bureau, Hangzhou 310051, China
| | - Yang Sun
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
| | - Yuesi Wang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Hu
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
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Hoffman C, Cheng J, Morales R, Ji D, Dabaghian Y. Altered patterning of neural activity in a tauopathy mouse model. bioRxiv 2024:2024.03.23.586417. [PMID: 38585991 PMCID: PMC10996513 DOI: 10.1101/2024.03.23.586417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Alzheimer's disease (AD) is a complex neurodegenerative condition that manifests at multiple levels and involves a spectrum of abnormalities ranging from the cellular to cognitive. Here, we investigate the impact of AD-related tau-pathology on hippocampal circuits in mice engaged in spatial navigation, and study changes of neuronal firing and dynamics of extracellular fields. While most studies are based on analyzing instantaneous or time-averaged characteristics of neuronal activity, we focus on intermediate timescales-spike trains and waveforms of oscillatory potentials, which we consider as single entities. We find that, in healthy mice, spike arrangements and wave patterns (series of crests or troughs) are coupled to the animal's location, speed, and acceleration. In contrast, in tau-mice, neural activity is structurally disarrayed: brainwave cadence is detached from locomotion, spatial selectivity is lost, the spike flow is scrambled. Importantly, these alterations start early and accumulate with age, which exposes progressive disinvolvement the hippocampus circuit in spatial navigation. These features highlight qualitatively different neurodynamics than the ones provided by conventional analyses, and are more salient, thus revealing a new level of the hippocampal circuit disruptions.
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Affiliation(s)
- C Hoffman
- Department of Neurology, The University of Texas McGovern Medical School, 6431 Fannin St, Houston, TX 77030
| | - J Cheng
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030
| | - R Morales
- Department of Neurology, The University of Texas McGovern Medical School, 6431 Fannin St, Houston, TX 77030
| | - D Ji
- Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030
| | - Y Dabaghian
- Department of Neurology, The University of Texas McGovern Medical School, 6431 Fannin St, Houston, TX 77030
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Xu J, Gong J, Ji D. Exploring the determinants of users' co-creation behavior on music streaming platforms in China. PLoS One 2023; 18:e0291313. [PMID: 38150464 PMCID: PMC10752535 DOI: 10.1371/journal.pone.0291313] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 08/15/2023] [Indexed: 12/29/2023] Open
Abstract
Music streaming platforms have recently become one of the latest innovative music devices used to replace traditional music sets. In order to examine users' behavior on music streaming platforms, this study proposes an extended research model based on flow theory and investigates the relationship between flow experience and co-creation behavior. A partial least square methodology was employed to test the proposed model and corresponding hypotheses on data collected from 390 survey samples. The results showed that flow experience has a significant influence on users' co-creation behavior. Among the three antecedents, only perceived skill and perceived interactivity have the strongest effects on flow experience, while perceived control has little effect on flow experience. This study discusses some valuable theoretical implications and offers insights useful for both researchers and practitioners.
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Affiliation(s)
- Jinghong Xu
- School of Journalism and Communication, Beijing Normal University, Beijing, China
| | - Jiankun Gong
- Department of Media and Communication Studies, Faculty of Arts and Social Sciences, University of Malaya, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Dan Ji
- School of Humanity, Shanghai Jiao Tong University, Shanghai, China
- School of International and Public Affairs, China Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai, China
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Song Y, Yoon DH, Yang H, Cao J, Ji D, Koh Y, Jing H, Eom H, Kwak J, Lee W, Lee J, Shin H, Jin J, Wang M, Yang Z, Kim WS, Zhu J. Phase I dose escalation and expansion study of golidocitinib, a highly selective JAK1 inhibitor, in relapsed or refractory peripheral T-cell lymphomas. Ann Oncol 2023; 34:1055-1063. [PMID: 37673210 DOI: 10.1016/j.annonc.2023.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/09/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND Relapsed or refractory peripheral T-cell lymphomas (r/r PTCLs) are a group of rare and aggressive diseases that lack effective therapies. Constitutive activation of the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway is reported to be associated with PTCLs. Golidocitinib is an oral, potent JAK1 selective inhibitor evaluated in a phase I/II multinational study in patients with r/r PTCLs. PATIENTS AND METHODS Patients with r/r PTCLs were eligible. The primary objectives were to assess safety and tolerability of golidocitinib and to define its recommended phase II dose (RP2D). The secondary objectives were to evaluate its antitumor activity and pharmacokinetics (PK). RESULTS A total of 51 patients were enrolled and received golidocitinib treatment at 150 or 250 mg once daily (QD). The median prior lines of therapies were 2 (range: 1-8). Golidocitinib was tolerated at both doses tested, while a higher incidence of serious adverse events and dose modifications at 250 mg were observed. The most common grade ≥3 drug-related treatment-emergent adverse events were neutropenia (27.5%) and thrombocytopenia (11.8%). An objective response rate of 39.2% and a complete response rate of 21.6% were observed. With median follow-up time of 14.7 and 15.9 months, the median duration of response (DoR) and progression-free survival were 8.0 and 3.3 months, respectively. Based on these data, 150 mg QD was defined as the RP2D. Golidocitinib demonstrated a favorable PK profile as an oral agent. Biomarker analysis suggested a potential correlation between JAK/STAT pathway aberrations and clinical activity of golidocitinib. CONCLUSIONS In this phase I study, golidocitinib demonstrated an acceptable safety profile and encouraging antitumor efficacy in heavily pretreated patients with r/r PTCLs. These results support the initiation of the multinational pivotal study in patients with r/r PTCLs.
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Affiliation(s)
- Y Song
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Lymphoma, Peking University Cancer Hospital and Institute, Beijing, China
| | - D H Yoon
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - H Yang
- Department of Lymphoma, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou
| | - J Cao
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - D Ji
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Y Koh
- Department of Internal Medicine, Division of Hematology and Medical Oncology, Seoul National University Hospital, Seoul, South Korea
| | - H Jing
- Department of Hematology and Lymphoma Research Center, Peking University Third Hospital, Beijing, China
| | - H Eom
- Hematology-Oncology Clinic, National Cancer Center, Goyang
| | - J Kwak
- Department of Internal Medicine, Chonbuk National University Medical School, Jeonju
| | - W Lee
- Department of Hematology-Oncology, Inje University College of Medicine, Busan Paik Hospital, Busan
| | - J Lee
- Division of Hematology-Oncology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam
| | - H Shin
- Division of Hematology-Oncology, Department of Internal Medicine, Medical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, South Korea
| | - J Jin
- Department of Hematology, The First Affiliated Hospital, Zhejiang University College of Medicine, Hangzhou
| | - M Wang
- Dizal Pharmaceutical, Jiangsu, China
| | - Z Yang
- Dizal Pharmaceutical, Jiangsu, China
| | - W S Kim
- Division of Hematology and Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
| | - J Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Lymphoma, Peking University Cancer Hospital and Institute, Beijing, China.
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Xu W, Zhu C, Ji D, Qian H, Shi L, Mao X, Zhou H, Wang L. CT-based radiomics prediction of CXCL13 expression in ovarian cancer. Med Phys 2023; 50:6801-6814. [PMID: 37690459 DOI: 10.1002/mp.16730] [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: 12/30/2022] [Revised: 06/05/2023] [Accepted: 08/08/2023] [Indexed: 09/12/2023] Open
Abstract
BACKGROUND Ovarian cancer, the most common malignancy in the female reproductive system, and patients tend to be at middle and advanced clinical stages when diagnosed. Therefore, early detection and early diagnosis have important clinical significance for the treatment of ovarian cancer patients. CXCL13, a chemokine with the ligands CXCR3 and CXCR5, is involved in the tumor metastasis process. PURPOSE This study aimed to predict mRNA expression of CXCL13 in ovarian cancer tissues noninvasively. METHODS Medical imaging data and transcriptomic sequencing data of the 343 ovarian cancer patients were downloaded from the TCIA and TCGA databases, respectively. Seventy-six radiomics features were extracted from the CT data. Seven features were selected for model construction by using logistic regression. Accuracy, specificity, sensitivity, positive predictive value, and negative predictive value were used to evaluate the radiomics model. RESULTS High CXCL13 expression was found to be a significant protective factor for OS [HR (95% CI) = 0.755 (0.622-0.916), p = 0.004]. There was a significant positive correlation between CXCL13 and the degree of eosinophil infiltration. A calibration curve and the Hosmer-Lemeshow goodness-of-fit test showed that the prediction probability of the radiomics prediction model for high expression of CXCL13 was consistent with the true value. The AUC value of the nomogram model's ability to predict OS (12 months) was 0.758. The calibration plot and DCA both showed high clinical applicability for the nomogram model. CONCLUSION CXCL13 is a candidate predictive biomarker for OC and correlates with the degree of plasma cell and eosinophil infiltration.
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Affiliation(s)
- Wenting Xu
- Department of Reproduction, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu, China
| | - Chengyi Zhu
- Department of Reproduction, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu, China
| | - Dan Ji
- X-ray Department, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu, China
| | - Haiqing Qian
- Department of Reproduction, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu, China
| | - Lingli Shi
- Department of Reproduction, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu, China
| | - Xuping Mao
- X-ray Department, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu, China
| | - Huifang Zhou
- Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Lihong Wang
- Department of Reproduction, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu, China
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Chen M, Zhong M, Huang S, Chen Y, Cao F, Hu H, Huang W, Ji D, Zhu M. α-Cyanostilbene-based sensor with “AIE and ESIPT” features emitting long-wavelength intense red-fluorescence for highly selective and sensitive detection of Cu2+. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110640] [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: 04/03/2023]
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Mao C, Ji D, Ding Y, Zhang Y, Song W, Liu L, Wu Y, Song L, Feng X, Zhang J, Cao J, Xu N. Suvemcitug as second-line treatment of advanced or metastatic solid tumors and with FOLFIRI for pretreated metastatic colorectal cancer: phase Ia/Ib open label, dose-escalation trials. ESMO Open 2023; 8:101540. [PMID: 37178668 DOI: 10.1016/j.esmoop.2023.101540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/20/2023] [Accepted: 03/29/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND Suvemcitug (BD0801), a novel humanized rabbit monoclonal antibody against vascular endothelial growth factor, has demonstrated promising antitumor activities in preclinical studies. PATIENTS AND METHODS The phase Ia/b trials investigated the safety and tolerability and antitumor activities of suvemcitug for pretreated advanced solid tumors and in combination with FOLFIRI (leucovorin and fluorouracil plus irinotecan) in second-line treatment of metastatic colorectal cancer using a 3 + 3 dose-escalation design. Patients received escalating doses of suvemcitug (phase Ia: 2, 4, 5, 6, and 7.5 mg/kg; phase Ib: 1, 2, 3, 4, and 5 mg/kg plus FOLFIRI). The primary endpoint was safety and tolerability in both trials. RESULTS All patients in the phase Ia trial had at least one adverse event (AE). Dose-limiting toxicities included grade 3 hyperbilirubinemia (one patient), hypertension and proteinuria (one patient), and proteinuria (one patient). The maximum tolerated dose was 5 mg/kg. The most common grade 3 and above AEs were proteinuria (9/25, 36%) and hypertension (8/25, 32%). Forty-eight patients (85.7%) in phase Ib had grade 3 and above AEs, including neutropenia (25/56, 44.6%), reduced leucocyte count (12/56, 21.4%), proteinuria (10/56, 17.9%), and elevated blood pressure (9/56, 16.1%). Only 1 patient in the phase Ia trial showed partial response, [objective response rate 4.0%, 95% confidence interval (CI) 0.1% to 20.4%] whereas 18/53 patients in the phase Ib trial exhibited partial response (objective response rate 34.0%, 95% CI 21.5% to 48.3%). The median progression-free survival was 7.2 months (95% CI 5.1-8.7 months). CONCLUSIONS Suvemcitug has an acceptable toxicity profile and exhibits antitumor activities in pretreated patients with advanced solid tumors or metastatic colorectal cancer.
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Affiliation(s)
- C Mao
- Department of Medical Oncology, The First Affiliated Hospital of Medical College of Zhejiang University, Shangcheng District, Hangzhou, Zhejiang Province
| | - D Ji
- Department of Head & Neck Tumors and Neuroendocrine Tumors, Fudan University Shanghai Cancer Hospital, Xuhui District, Shanghai; Department of Oncology, Shanghai Medical College, Fudan University, Xuhui District, Shanghai, China
| | - Y Ding
- Phase I Clinical Trials Unit, The First Hospital of Jilin University, Chaoyang District, Changchun, Jilin Province, China
| | - Y Zhang
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Nangang District, Harbin, China
| | - W Song
- Clinical Science, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - L Liu
- Clinical Statistics, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - Y Wu
- Clinical Science, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - L Song
- Clinical Pharmacology, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - X Feng
- Clinical Science, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - J Zhang
- Clinical Science, Shandong Simcere Bio-Pharmaceutical Co., Ltd., Yantai, Shandong Province, China
| | - J Cao
- Department of Lymphoma, Fudan University Shanghai Cancer Hospital, Xuhui District, Shanghai, China.
| | - N Xu
- Department of Medical Oncology, The First Affiliated Hospital of Medical College of Zhejiang University, Shangcheng District, Hangzhou, Zhejiang Province.
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Zeng Z, You M, Rong R, Fan C, Chen M, Li H, Ji D, Xia X. Translocator protein 18 kDa regulates retinal neuron apoptosis and pyroptosis in glaucoma. Redox Biol 2023; 63:102713. [PMID: 37120931 PMCID: PMC10172718 DOI: 10.1016/j.redox.2023.102713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 04/22/2023] [Indexed: 05/02/2023] Open
Abstract
Glaucoma is the leading cause of blindness worldwide. However, our insufficient understanding of the pathogenesis of glaucoma has limited the development of effective treatments. Because recent research has highlighted the importance of non-coding RNAs (ncRNAs) in various diseases, we investigated their roles in glaucoma. Specifically, we detected expression changes of ncRNAs in cell and animal models of acute glaucoma. Further analysis revealed that the Ier2/miR-1839/TSPO axis was critical to cell loss and retinal damage. The knockdown of Ier2, the overexpression of miR-1839, and the silencing of TSPO effectively prevented retinal damage and cell loss. Furthermore, we found that the Ier2/miR-1839/TSPO axis regulated the pyroptosis and apoptosis of retinal neurons through the NLRP3/caspase1/GSDMD, cleaved-caspase3 pathways. In addition to high expression in the retina, TSPO expression was found to be significantly higher in the dorsal lateral geniculate nucleus (DLG) of the brain in the pathologically high intraocular pressure (ph-IOP) rat model, as well as in the peripheral blood mononuclear cells (PBMCs) of glaucoma patients with high IOP. These results indicate that TSPO, which is regulated by Ier2/miR-1839, plays an important role in the pathogenesis of glaucoma, and this study provides a theoretical basis and a new target for the diagnosis and treatment of glaucoma.
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Affiliation(s)
- Zhou Zeng
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China; Hunan Key Laboratory of Ophthalmology, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Mengling You
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China; Hunan Key Laboratory of Ophthalmology, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Rong Rong
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China; Hunan Key Laboratory of Ophthalmology, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Cong Fan
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China; Hunan Key Laboratory of Ophthalmology, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Meini Chen
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China; Hunan Key Laboratory of Ophthalmology, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Haibo Li
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China; Hunan Key Laboratory of Ophthalmology, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Dan Ji
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China; Hunan Key Laboratory of Ophthalmology, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
| | - Xiaobo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China; Hunan Key Laboratory of Ophthalmology, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
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Long L, Ji D, Hu C, Yang L, Tang S, Wang Y. Microneedles for in situ tissue regeneration. Mater Today Bio 2023; 19:100579. [PMID: 36880084 PMCID: PMC9984687 DOI: 10.1016/j.mtbio.2023.100579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/06/2023] [Accepted: 02/10/2023] [Indexed: 02/13/2023] Open
Abstract
Tissue injury is a common clinical problem, which may cause great burden on patients' life. It is important to develop functional scaffolds to promote tissue repair and regeneration. Due to their unique composition and structure, microneedles have attracted extensive attention in various tissues regeneration, including skin wound, corneal injury, myocardial infarction, endometrial injury, and spinal cord injury et al. Microneedles with micro-needle structure can effectively penetrate the barriers of necrotic tissue or biofilm, therefore improving the bioavailability of drugs. The use of microneedles to deliver bioactive molecules, mesenchymal stem cells, and growth factors in situ allows for targeted tissue and better spatial distribution. At the same time, microneedles can also provide mechanical support or directional traction for tissue, thus accelerating tissue repair. This review summarized the research progress of microneedles for in situ tissue regeneration over the past decade. At the same time, the shortcomings of existing researches, future research direction and clinical application prospect were also discussed.
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Affiliation(s)
- Linyu Long
- Aier Eye Institute, Changsha, Hunan Province, 410035, China
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Cheng Hu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
| | - Li Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
- Corresponding author.
| | - Shibo Tang
- Aier Eye Institute, Changsha, Hunan Province, 410035, China
- Aier School of Ophthalmology, Central South University, Changsha, Hunan, 410009, China
- CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China
- Corresponding author. Aier Eye Institute, Changsha, Hunan Province, 410035, China.
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China
- Corresponding author.
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Ji D, Lu JD, Zhang ZG, Mao XP. Misdiagnosis of food-borne foreign bodies outside of the digestive tract on magnetic resonance imaging: Two case reports. World J Clin Cases 2023; 11:1650-1655. [PMID: 36926397 PMCID: PMC10011975 DOI: 10.12998/wjcc.v11.i7.1650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/27/2023] [Accepted: 02/15/2023] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND Patients with foreign bodies in the digestive tract are often encountered, but complete penetration of a foreign body through the gastrointestinal tract is rare, and the choice of imaging method is very important. Improper selection may lead to missed diagnosis or misdiagnosis.
CASE SUMMARY An 81-year-old man was diagnosed as having a liver malignancy after he took magnetic resonance imaging and positron emission tomography/computed tomography (CT) examinations. The pain improved after the patient accepted gamma knife treatment. However, he was admitted to our hospital 2 mo later due to fever and abdominal pain. This time, he received a contrast-enhanced CT scan, which showed fish-boon-like foreign bodies in the liver with peripheral abscess formation, then he went to the superior hospital for surgery. It lasted for more than 2 mo from the onset of the disease to the surgical treatment. A 43-year-old woman with a 1 mo history of a perianal mass with no obvious pain or discomfort was diagnosed as having an anal fistula with the formation of a local small abscess cavity. Clinical perianal abscess surgery was performed, and fish bone foreign body was found in perianal soft tissue during the operation.
CONCLUSION For patients with pain symptoms, the possibility of foreign body perforation should be considered. Magnetic resonance imaging is not comprehensive and that a plain computed tomography scan of the pain area is necessary.
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Affiliation(s)
- Dan Ji
- Department of Radiology, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang 215600, Jiangsu Province, China
| | - Jian-Dong Lu
- Department of Radiology, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang 215600, Jiangsu Province, China
| | - Zhi-Guo Zhang
- Department of Radiology, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang 215600, Jiangsu Province, China
| | - Xu-Ping Mao
- Department of Radiology, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang 215600, Jiangsu Province, China
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You M, Rong R, Zeng Z, Fan C, Li H, Yang Q, Ji D. Integrated analysis of long non-coding RNAs and mRNAs associated with glaucoma in vitro. Front Endocrinol (Lausanne) 2023; 14:1087442. [PMID: 36923213 PMCID: PMC10008935 DOI: 10.3389/fendo.2023.1087442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 01/02/2023] [Indexed: 03/03/2023] Open
Abstract
INTRODUCTION In recent years, the biological functions and important roles of long non-coding RNAs (lncRNAs) have been widely reported in many diseases. Although glaucoma is the leading cause of blindness worldwide, the specific mechanisms of lncRNAs in the pathogenesis and progression of glaucoma remain unclear. Our research aims to elucidate the differentially expressed lncRNAs and mRNAs in glaucoma and to provide a basis for further exploration of the specific mechanism of action of lncRNAs in the progression of glaucoma. METHODS We performed RNA sequencing on samples from a pressurized model of R28 cells and performed bioinformatics analyses on the sequencing results. The expression consistency of lncRNAs in clinical samples from patients with glaucoma or cataracts was detected using real-time quantitative polymerase chain reaction (RT-qPCR). RESULTS RNA sequencing results showed that lncRNAs in cluster 5 were upregulated with increasing stress after typing all significantly altered lncRNAs using k-means in a cellular stress model. KEGG analysis indicated that they were associated with neurodegenerative diseases. Differentially expressed lncRNAs were verified by RT-qPCR, and the lncRNA expression levels of AC120246.2 and XLOC_006247 were significantly higher in the aqueous humor (AH) of patients with glaucoma than in those with cataracts. For LOC102551819, there was almost no expression in the AH and trabecular meshwork in patients with glaucoma but high expression was observed in the iris. CONCLUSION Our research proposes potential diagnostic or intervention targets for clinical applications as well as a theoretical basis for more in-depth research on the function of lncRNAs in glaucoma.
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Affiliation(s)
- Mengling You
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Rong Rong
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Zhou Zeng
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Cong Fan
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Haibo Li
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Qian Yang
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Dan Ji
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Dan Ji,
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Rong R, Zhou X, Liang G, Li H, You M, Liang Z, Zeng Z, Xiao H, Ji D, Xia X. Targeting Cell Membranes, Depleting ROS by Dithiane and Thioketal-Containing Polymers with Pendant Cholesterols Delivering Necrostatin-1 for Glaucoma Treatment. ACS Nano 2022; 16:21225-21239. [PMID: 36487191 DOI: 10.1021/acsnano.2c09202] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Glaucoma is the leading cause of irreversible blindness worldwide, characterized by progressive vision loss due to the selective damage to retinal ganglion cells (RGCs) and their axons. Oxidative stress is generally believed as one key factor of RGCs death. Recently, necroptosis was identified to play a key role in glaucomatous injury. Therefore, depletion of reactive oxygen species (ROS) and inhibition of necroptosis in RGCs has become one of treatment strategies for glaucoma. However, existing drugs without efficient drug enter into the retina and have controlled release due to a short drug retention. Herein, we designed a glaucomatous microenvironment-responsive drug carrier polymer, which is characterized by the presence of thioketal bonds and 1,4-dithiane unit in the main chain for depleting ROS as well as the pendant cholesterols for targeting cell membranes. This polymer was adopted to encapsulate an inhibitor of necroptosis, necrostatin-1, into nanoparticles (designated as NP1). NP1 with superior biosafety could scavenge ROS in RGCs both in vitro and in vivo of an acute pathological glaucomatous injury model. Further, NP1 was found to effectively inhibit the upregulation of the necroptosis pathway, reducing the death of RGCs. The findings in this study exemplified the use of nanomaterials as potential strategies to treat glaucoma.
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Affiliation(s)
- Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan410008, P. R. China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan410008, P. R. China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Central South University, Changsha, Hunan410008, P. R. China
| | - Xuezhi Zhou
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan410008, P. R. China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan410008, P. R. China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Central South University, Changsha, Hunan410008, P. R. China
| | - Ganghao Liang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Haibo Li
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan410008, P. R. China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan410008, P. R. China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Central South University, Changsha, Hunan410008, P. R. China
| | - Mengling You
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan410008, P. R. China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan410008, P. R. China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Central South University, Changsha, Hunan410008, P. R. China
| | - Zhuotao Liang
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Central South University, Changsha, Hunan410008, P. R. China
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, Hunan410008, P. R. China
| | - Zhou Zeng
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan410008, P. R. China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan410008, P. R. China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Central South University, Changsha, Hunan410008, P. R. China
| | - Haihua Xiao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan410008, P. R. China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan410008, P. R. China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Central South University, Changsha, Hunan410008, P. R. China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan410008, P. R. China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan410008, P. R. China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Central South University, Changsha, Hunan410008, P. R. China
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Chen M, Huang W, Li Y, Chen Y, Ji D, Zhu M. Preparation, AIE and ESIPT behaviour, controllable solid-state fluorescence and application of Co2+ probe based on α-cyanostilbene. Methods Appl Fluoresc 2022; 11. [DOI: 10.1088/2050-6120/aca378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 11/16/2022] [Indexed: 11/17/2022]
Abstract
Abstract
A simple α-cyanostilbene-functioned salicylaldehyde-based Schiff-base probe, which exhibited outstanding “aggregation-induced emission and excited state intramolecular proton transfer (AIE + ESIPT)” emission in solution, aggregation and solid states, was synthesized in high yield of 87%. Its solid-states with different morphologies emitted different fluorescence after crystallization in EtOH/H2O (1/2, v/v) mixtures or pure EtOH solvent. Besides, it exhibited an obvious spectro-photometrical fluorescence quenching for highly selective sensing of Co2+ in THF/water system (ƒw = 60%, pH = 7.4), accompanied by an intense green fluorescence turn-off behavior under UV365nm illumination. The binding stochiometry between the ligand and Co2+ was found to be 2:1, and the detection limit (DL) was calculated to be 0.41 × 10-8 M. In addition, it could be applied to detect Co2+ in real water samples and on silica gel testing strip.
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Liu M, Li H, Yang R, Ji D, Xia X. GSK872 and necrostatin-1 protect retinal ganglion cells against necroptosis through inhibition of RIP1/RIP3/MLKL pathway in glutamate-induced retinal excitotoxic model of glaucoma. J Neuroinflammation 2022; 19:262. [PMID: 36289519 PMCID: PMC9608931 DOI: 10.1186/s12974-022-02626-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/17/2022] [Indexed: 11/14/2022] Open
Abstract
Background Glaucoma, the major cause of irreversible blindness worldwide, is characterized by progressive degeneration of retinal ganglion cells (RGCs). Current treatments for glaucoma only slow or partially prevent the disease progression, failing to prevent RGCs death and visual field defects completely. Glutamate excitotoxicity via N-methyl-d-aspartic acid (NMDA) receptors plays a vital role in RGCs death in glaucoma, which is often accompanied by oxidative stress and NLRP3 inflammasome activation. However, the exact mechanisms remain unclear. Methods The glutamate-induced R28 cell excitotoxicity model and NMDA-induced mouse glaucoma model were established in this study. Cell counting kit-8, Hoechst 33342/PI dual staining and lactate dehydrogenase release assay were performed to evaluate cell viability. Annexin V-FITC/PI double staining was used to detect apoptosis and necrosis rate. Reactive oxygen species (ROS) and glutathione (GSH) were used to detect oxidative stress in R28 cells. Levels of proinflammatory cytokines were measured by qRT-PCR. Transmission electron microscopy (TEM) was used to detect necroptotic morphological changes in RGCs. Retinal RGCs numbers were detected by immunofluorescence. Hematoxylin and eosin staining was used to detect retinal morphological changes. The expression levels of RIP1, RIP3, MLKL and NLRP3 inflammasome-related proteins were measured by immunofluorescence and western blotting. Results We found that glutamate excitotoxicity induced necroptosis in RGCs through activation of the RIP1/RIP3/MLKL pathway in vivo and in vitro. Administration of the RIP3 inhibitor GSK872 and RIP1 inhibitor necrostatin-1 (Nec-1) prevented glutamate-induced RGCs loss, retinal damage, neuroinflammation, overproduction of ROS and a decrease in GSH. Furthermore, after suppression of the RIP1/RIP3/MLKL pathway by GSK872 and Nec-1, glutamate-induced upregulation of key proteins involved in NLRP3 inflammasome activation, including NLRP3, pro-caspase-1, cleaved-caspase-1, and interleukin-1β (IL-1β), was markedly inhibited. Conclusions Our findings suggest that the RIP1/RIP3/MLKL pathway mediates necroptosis of RGCs and regulates NLRP3 inflammasome activation induced by glutamate excitotoxicity. Moreover, GSK872 and Nec-1 can protect RGCs from necroptosis and suppress NLRP3 inflammasome activation through inhibition of RIP1/RIP3/MLKL pathway, conferring a novel neuroprotective treatment for glaucoma. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02626-4.
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Affiliation(s)
- Mengyuan Liu
- grid.216417.70000 0001 0379 7164Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan People’s Republic of China ,grid.452223.00000 0004 1757 7615Hunan Key Laboratory of Ophthalmology, Changsha, 410008 Hunan People’s Republic of China ,grid.216417.70000 0001 0379 7164National Clinical Research Center for Geriatric Disorders, Xiangya Hosiptal, Central South University, Changsha, Hunan People’s Republic of China
| | - Haibo Li
- grid.216417.70000 0001 0379 7164Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan People’s Republic of China ,grid.452223.00000 0004 1757 7615Hunan Key Laboratory of Ophthalmology, Changsha, 410008 Hunan People’s Republic of China ,grid.216417.70000 0001 0379 7164National Clinical Research Center for Geriatric Disorders, Xiangya Hosiptal, Central South University, Changsha, Hunan People’s Republic of China
| | - Rongliang Yang
- grid.216417.70000 0001 0379 7164Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan People’s Republic of China ,grid.452223.00000 0004 1757 7615Hunan Key Laboratory of Ophthalmology, Changsha, 410008 Hunan People’s Republic of China ,grid.216417.70000 0001 0379 7164National Clinical Research Center for Geriatric Disorders, Xiangya Hosiptal, Central South University, Changsha, Hunan People’s Republic of China
| | - Dan Ji
- grid.216417.70000 0001 0379 7164Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan People’s Republic of China ,grid.452223.00000 0004 1757 7615Hunan Key Laboratory of Ophthalmology, Changsha, 410008 Hunan People’s Republic of China ,grid.216417.70000 0001 0379 7164National Clinical Research Center for Geriatric Disorders, Xiangya Hosiptal, Central South University, Changsha, Hunan People’s Republic of China
| | - Xiaobo Xia
- grid.216417.70000 0001 0379 7164Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan People’s Republic of China ,grid.452223.00000 0004 1757 7615Hunan Key Laboratory of Ophthalmology, Changsha, 410008 Hunan People’s Republic of China ,grid.216417.70000 0001 0379 7164National Clinical Research Center for Geriatric Disorders, Xiangya Hosiptal, Central South University, Changsha, Hunan People’s Republic of China
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Lu CL, Lee BH, Ren YL, Ji D, Rao SQ, Li HX, Yang ZQ. Effects of exopolysaccharides from Antrodia cinnamomea on inflammation and intestinal microbiota disturbance induced by antibiotics in mice. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102116] [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: 11/06/2022]
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Ji D, Yang Y, Zhou F, Li C. A nine–consensus–prognostic –gene–based prognostic signature, recognizing the dichotomized subgroups of gastric cancer patients with different clinical outcomes and therapeutic strategies. Front Genet 2022; 13:909175. [PMID: 36226177 PMCID: PMC9550166 DOI: 10.3389/fgene.2022.909175] [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: 04/04/2022] [Accepted: 08/10/2022] [Indexed: 12/24/2022] Open
Abstract
Background: The increasing prevalence and mortality of gastric cancer (GC) has promoted the urgent need for prognostic signatures to predict the long-term risk and search for therapeutic biomarkers. Methods and materials: A total of 921 GC patients from three GEO cohorts were enrolled in the current study. The GSE15459 and GSE62254 cohorts were used to select the top prognostic gene via the evaluation of the area under the receiver operating characteristic (ROC) curve (AUC) values. The GSE84437 cohort was used as the external validation cohort. Least absolute shrinkage and selector operation (LASSO) regression analysis was applied to reduce the feature dimension and construct the prognostic signature. Furthermore, a nomogram was constructed by integrating the independent prognostic analysis and validated by calibration plot, decision curve analysis and clinical impact curve. The molecular features and response to chemo-/immunotherapy among risk subgroups were evaluated by the “MOVICS” and “ESTAMATE” R packages and the SubMap algorithm. Lauren classification and ACRG molecular subtype were obtained to compare with the risk model. Results: Forty-four prognosis-associated genes were identified with a preset cutoff AUC value of 0.65 in both the GSE62254 and GSE15459 cohorts. With the 10-fold cross validation analysis of LASSO, nine genes were selected to construct the nine-consensus-prognostic-gene signature. The signature showed good prognostic value in the GSE62254 (p < 0.001, HR: 3.81, 95% CI: 2.44–5.956) and GSE15459 (p < 0.001, HR: 2.65, 95% CI: 1.892–3.709) cohorts and the external validation GSE84437 cohort (p < 0.001, HR: 2.06, 95% CI: 1.554–2.735). The nomogram constructed based on two independent predictive factors, tumor stage and the signature, predicted events tightly consistent with the actual (Hosmer–Lemeshow p value: 1-year, 0.624; 3-years, 0.795; 5-years, 0.824). For the molecular features, we observed the activation of apical junction, epithelial mesenchymal transition, and immune pathways in the high-risk group, while in the low-risk group, cell cycle associated G2M, E2F and MYC target pathways were activated. Based on the results we obtained, we indicated that gastric patients in the low-risk group are more suitable for 5-fluorouracil therapy, while high-risk group patients are more suitable for anti-CTLA4 immunotherapy, these results need more support in the further studies. After compare with proposed molecular subtypes, we realized that the nine-consensus prognostic gene signature is a powerful addition to identify the gastric patients with poor prognosis. Conclusion: In summary, we constructed a robust nine-consensus-prognostic-gene signature for the prediction of GC prognosis, which can also predict the personalized treatment of GC patients.
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Affiliation(s)
- Dan Ji
- Department of Basic Medicine, Anhui Medical College, Hefei, Anhui, China
| | - Yang Yang
- Huangshan Health Vocational College, Huangshan, Anhui, China
| | - Fei Zhou
- Department of Basic Medicine, Anhui Medical College, Hefei, Anhui, China
| | - Chao Li
- Department of General Surgery, Hefei First People’s Hospital, Hefei, China
- *Correspondence: Chao Li,
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Li H, Ji D, Luo Z, Ren Y, Lu Z, Yang Z, Xu Z. Comparative Transcriptomic Analyses Reveal the Regulatory Mechanism of Nutrient Limitation-Induced Sporulation of Antrodia cinnamomea in Submerged Fermentation. Foods 2022; 11:foods11172715. [PMID: 36076898 PMCID: PMC9455894 DOI: 10.3390/foods11172715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 08/27/2022] [Accepted: 08/31/2022] [Indexed: 12/04/2022] Open
Abstract
Antrodia cinnamomea is a precious edible and medicinal mushroom with various biological activities, such as hepatoprotection, antitumor, antivirus, immunoregulation, and intestinal flora regulation. However, the wild fruiting bodies of A. cinnamomea are scarce and expensive. Submerged fermentation based on spore inoculation has become the most efficient and popular artificial culture method for A. cinnamomea. In order to complement the mechanism of asexual sporulation of A. cinnamomea in submerged fermentation, and provide a theoretical basis to further improve the sporulation, comparative transcriptomics analysis using RNA-seq and RT-qPCR were conducted on A. cinnamomea mycelia cultured under different nutritional conditions to reveal the regulatory mechanism underlying the asexual sporulation induced by nutrient limitation. The obtained mechanism is as follows: under nitrogen starvation, the corresponding sensors transmit signals to genes, such as areA and tmpA, and promote their expression. Among these genes, AreA has a direct or indirect effect on flbD and promotes its expression, further enhancing the expression of brlA. Meanwhile, TmpA has a direct or indirect effect on brlA and promotes its expression; under carbon starvation, transport protein Rco-3, as a glucose sensor, directly or indirectly transmits signals to brlA and promotes its expression. BrlA promotes the expression of abaA gene, which further enhances the expression of wetA gene, and wetA then directly leads to asexual sporulation and promotes spore maturation; meanwhile, gulC can also promote cell autolysis, which provides energy and raw materials for sporulation.
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Affiliation(s)
- Huaxiang Li
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225009, China
| | - Dan Ji
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225009, China
| | - Zhishan Luo
- School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Yilin Ren
- Department of Gastroenterology, Affiliated Hospital of Jiangnan University, Wuxi 214041, China
| | - Zhenming Lu
- School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zhenquan Yang
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225009, China
- Jiangsu Key Laboratory of Dairy Biotechnology and Safety Control, Yangzhou University, Yangzhou 225009, China
- Correspondence: (Z.Y.); (Z.X.)
| | - Zhenghong Xu
- School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Correspondence: (Z.Y.); (Z.X.)
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Xu Y, Ji D, Pan P, Li T, Han LX, Zhang Z, Wang Y, Li H, Chen XF, Zheng XJ, Xu L, Liu HX, Meng QH, Wang MZ, Zheng QS. 1175P Pharmacokinetics of ensartinib in advanced solid tumors and anaplastic lymphoma kinase-positive non-small cell lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1298] [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: 11/01/2022] Open
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Fan Y, Ji D, Luo Y, Wang J, Chen S, Lan B, Xu B. 207P Comparison of CDK4/6 inhibitors, PI3K/mTOR inhibitors, and HDAC inhibitors in the second-line treatment of hormone receptor-positive, HER2-negative advanced breast cancer: A network meta-analysis. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.241] [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: 11/01/2022] Open
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Zhou X, Rong R, Xiong S, Song W, Ji D, Xia X. Integrated analysis to reveal potential therapeutic targets and prognostic biomarkers of skin cutaneous melanoma. Front Immunol 2022; 13:914108. [PMID: 36032150 PMCID: PMC9402985 DOI: 10.3389/fimmu.2022.914108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/21/2022] [Indexed: 11/24/2022] Open
Abstract
Skin cutaneous melanoma (SKCM) is a malignant tumor with high mortality rate in human, and its occurrence and development are jointly regulated by genes and the environment. However, the specific pathogenesis of SKCM is not completely understood. In recent years, an increasing number of studies have reported the important role of competing endogenous RNA (ceRNA) regulatory networks in various tumors; however, the complexity and specific biological effects of the ceRNA regulatory network of SKCM remain unclear. In the present study, we obtained a ceRNA regulatory network of long non-coding RNAs, microRNAs, and mRNAs related to the phosphatase and tensin homolog (PTEN) in SKCM and identified the potential diagnostic and prognostic markers related to SKCM. We extracted the above three types of RNA involved in SKCM from The Cancer Genome Atlas database. Through bioinformatics analysis, the OIP5-AS1-hsa-miR-186-5p/hsa-miR-616-3p/hsa-miR-135a-5p/hsa-miR-23b-3p/hsa-miR-374b-5p-PTPRC/IL7R/CD69 and MALAT1-hsa-miR-135a-5p/hsa-miR-23b-3p/hsa-miR-374b-5p-IL7R/CD69 ceRNA networks were found to be related to the prognosis of SKCM. Finally, we determined the OIP5-AS1-PTPRC/IL7R/CD69 and MALAT1-IL7R/CD69 axes in ceRNA as a clinical prognostic model using correlation and Cox regression analyses. Additionally, we explored the possible role of these two axes in affecting gene expression and immune microenvironment changes and the occurrence and development of SKCM through methylation and immune infiltration analyses. In summary, the ceRNA-based OIP5-AS1-PTPRC/IL7R/CD69 and MALAT1-IL7R/CD69 axes may be a novel and important approach for the diagnosis and prognosis of SKCM.
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Affiliation(s)
- Xuezhi Zhou
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Changsha, China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, China
| | - Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Changsha, China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, China
| | - Siqi Xiong
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Changsha, China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, China
| | - Weitao Song
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Changsha, China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Changsha, China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Changsha, China
- National Clinical Research Center for Geriatric Diseases (Xiangya Hospital), Changsha, China
- *Correspondence: Xiaobo Xia,
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Liu M, Wang Q, Ji D, Zhou J, Yang J. The Effect of Diammonium Glycyrrhizinate Lipid Ligand on Nonalcoholic Fatty Liver Disease Induced Leukocyte Infiltration in Rat Model. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.3060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Objective: To investigate the effects of diammonium glycyrrhizinate lipid ligand (DGLL) on nonalcoholic fatty liver disease (NAFLD)-induced leukocyte infiltration in rat and underlying mechanisms. Methods: Sixty SD rats were randomly distributed into six groups, control
group, NAFLD model group, DGLL (30, 60, 120 mg/kg) treatment group and positive control (biphenyl biester tablets (BDP), 200 mg/kg) group. The expression and activity of myeloperoxidase (MPO) in liver tissues were measured by immunohistochemistry and ELISA, respectively. The expressions of
leukocyte adhesion molecules in whole blood were determined by flow cytometry. The intercellular adhesion molecule-1 (ICAM-1) expressions in liver tissues was detected by western blotting. Results: Compared with NAFLD model groups, the expression and activity of MPO in liver tissues
of DGLL (30, 60, 120 mg/kg) treatment group were all significantly ameliorated by the administration of DGLL (P < 0.05). Meanwhile, the up-regulation of adhesion molecules expressed on monocytes and neutrophils in whole blood, as well as endothelial ICAM-1 expression in NAFLD model
groups were eliminated by DGLL treatment (P < 0.05). Conclusion: DGLL ameliorated leukocyte activation and infiltration in rat liver with NAFLD, which might be related to suppression of adhesion molecules expression on leukocyte and endothelium.
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Affiliation(s)
- Meimei Liu
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui Province, 230601, China
| | - Qi Wang
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui Province, 230601, China
| | - Dan Ji
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui Province, 230601, China
| | - Jin Zhou
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui Province, 230601, China
| | - Jun Yang
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui Province, 230601, China
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22
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Huang Q, Ji D, Tian X, Ma L, Sun X. [Berberine inhibits erastin-induced ferroptosis of mouse hippocampal neuronal cells possibly by activating the Nrf2-HO-1/GPX4 pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:937-943. [PMID: 35790446 DOI: 10.12122/j.issn.1673-4254.2022.06.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the mechanism by which berberine inhibits ferroptosis of mouse hippocampal neuronal cells (HT22). METHODS Cultured HT22 cells were pretreated with 30 or 60 μmol/L berberine for 2 h before exposure to 0.5 μmol/L erastin for 8 h, and the cell proliferation, intracellular ferric iron level, changes in intracellular reactive oxygen species (ROS) and cell apoptosis were detected using CCK-8, Fe2+ fluorescent probe, fluorescent dye (DAPI) and fluorescent probe (H2DCFH-DA). RT-qPCR and Western blotting were used to detect the mRNA and protein expressions of Nrf2, HO-1 and GPX4 in the cells. We further tested the effects of treatments with 2 μmol/L ML385 (a Nrf2 inhibitor), 60 μmol/L berberine and erastin in the cells to explore the protective mechanism of berberine against erastin-induced ferroptosis in the neuronal cells. RESULTS Treatment with 0.5 μmol/L erastin significantly lowered the viability of HT22 cells (P < 0.05) and increased the production of ROS, cell apoptosis rate and ferric iron level (P < 0.05). Pretreatment with 30 and 60 μmol/L berberine both significantly increased the vitality of erastin-exposed cells (P < 0.05) and lowered the levels of intracellular ROS and ferric iron content (P < 0.05). RT-qPCR and Western blotting showed that berberine obviously promoted the expressions of Nrf2, HO-1 and GPX4 in the cells (P < 0.05), and treatment with ML385 significantly inhibited the Nrf2-HO-1/GPX4 pathway, increased intracellular ROS and ferric iron contents and mitigated the protective effect of berberine against erastin-induced ferroptosis (P < 0.05). CONCLUSION Berberine can inhibit erastin-induced ferroptosis in HT22 cells possibly by activating the Nrf2-HO-1/ GPX4 pathway.
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Affiliation(s)
- Q Huang
- Department of Clinical Medicine, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
| | - D Ji
- Department of Clinical Medicine, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
| | - X Tian
- Department of Clinical Medicine, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
| | - L Ma
- Department of Pharmacy, Bengbu Medical College, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
| | - X Sun
- Department of Pharmacy, Bengbu Medical College, Biochemical Drugs Engineering and Technological Research Center of Anhui Province, Bengbu 233030, China
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23
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He M, Rong R, Ji D, Xia X. From Bench to Bed: The Current Genome Editing Therapies for Glaucoma. Front Cell Dev Biol 2022; 10:879957. [PMID: 35652098 PMCID: PMC9149310 DOI: 10.3389/fcell.2022.879957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 04/25/2022] [Indexed: 11/20/2022] Open
Abstract
Glaucoma is a group of optic neuropathies featured by degeneration of retinal ganglion cells and loss of their axons in the optic nerve. The only currently approved therapies focus on lowering intraocular pressure with medication and surgery. Over the previous few decades, technological advances and research progress regarding pathogenesis has brought glaucomatous gene therapy to the forefront. In this review, we discuss the three current genome editing methods and potential disease mechanisms of glaucoma. We further summarize different genome editing strategies that are being developed to target a number of glaucoma-related genes and pathways from four aspects including strategies to lower intraocular pressure, neuroprotection, RGC and optic nerve neuro-regeneration, and other strategies. In summary, genome therapy is a promising therapy for treating patients with glaucoma and has great potential to be widely applied in clinical practice.
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Affiliation(s)
- Meihui He
- Eye Center of Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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24
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Ji D, Papachristou S, Francesconi M. The role of inflammation and cortisol in the relationship between social cognition abilities and later emotional or behavioural problems: evidence from a UK birth cohort. Eur Psychiatry 2022. [PMCID: PMC9562928 DOI: 10.1192/j.eurpsy.2022.928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Deficits in social cognition have been associated with the onset of emotional and behavioural problems, but the biological mechanisms underlying this relationship remain unclear. Objectives This study examined whether diurnal cortisol patterns, systemic inflammation, or both, explained the association between social cognition difficulties and subsequent emotional and behavioural symptoms. Methods The sample consisted of 714 individuals from the Avon Longitudinal Study of Parents and Children (ALSPAC) with valid data on cortisol measures (age 15 years) and emotional or behavioural problems (age 17 years). Social cognition abilities were measured at 8, 11, and 14 years old. Inflammation was measured using serum levels of interleukin 6 (IL-6, age 9 years) and C-reactive protein (CRP, age 9 and 16 years). Bayesian structural equation modelling was used to investigate the mediating effect of cortisol or inflammation on the association between social cognitive difficulties and emotional or behavioural problems. Results Children with social cognition difficulties were associated with later emotional and behavioural problems. Flattened diurnal cortisol slope was associated with the hyperactivity/inattention problem two years later. Mediation analyses revealed that lower morning cortisol significantly mediated the associations between social communication difficulties at 8 years with hyperactivity/inattention and conduct problems in adolescence, with the adjustment of inflammation and all covariates. Systemic inflammation was not related to social cognitive difficulties or future emotional and behavioural problems. Conclusions The finding suggests that social cognition is related to cortisol activities longitudinally. It also expands the evidence that adolescents with behavioural problems are characterised by hypoactivity of the hypothalamic-pituitary-adrenal (HPA) axis. Disclosure No significant relationships.
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25
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Ouyang S, Ji D, He S, Xia X. Endoplasmic reticulum stress as a novel target to inhibit transdifferentiation of human retinal pigment epithelial cells. Front Biosci (Landmark Ed) 2022; 27:38. [DOI: 10.31083/j.fbl2702038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/07/2021] [Accepted: 12/12/2021] [Indexed: 11/06/2022]
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26
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Ji D, Zhu QC, Wei YH. [The in vivo imaging of zebrafish for chemical vascular toxicity assessment]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:33-37. [PMID: 35092988 DOI: 10.3760/cma.j.cn112150-20210510-00457] [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: 06/14/2023]
Abstract
Objective: To evaluate the vascular toxicity of chemicals by a real-time observation approach using the transgenic zebrafish. Methods: The spatiotemporal vascular alterations of transgenic zebrafish after chemical exposure were assessed by laser confocal microscopy and high-content screening analysis, respectively. Results: The method using Laser Confocal Microscopy (LCM) is easier to operate and yields high-resolution images, while it is lower throughput and inefficient. In contrast, high-content analysis (HCA) analysis obtains high-quality data of vascular toxicity manifesting whole blood vasculature, whereas it requires delicate operation procedures and advanced experimental conditions. Conclusion: Two kinds of zebrafish imaging methods each have advantages and disadvantages. LCM is suitable for the evaluation of a small number of chemicals. HCA, a cutting-edge technology, has great potential for chemical safety assessment allowing high throughput vascular toxicity tests of a good number of chemicals at a time.
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Affiliation(s)
- D Ji
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Q C Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Y H Wei
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
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27
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Rong R, Yang R, Li H, You M, Liang Z, Zeng Z, Zhou R, Xia X, Ji D. The roles of mitochondrial dynamics and NLRP3 inflammasomes in the pathogenesis of retinal light damage. Ann N Y Acad Sci 2021; 1508:78-91. [PMID: 34741555 DOI: 10.1111/nyas.14716] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/01/2021] [Accepted: 10/12/2021] [Indexed: 12/15/2022]
Abstract
With the widespread popularity of electronic products and the diversification of lighting equipment, ocular photochemical damage caused by light has attracted research attention. Although such equipment mainly cause damage to the retina, the specific pathogenesis has not been systematically elucidated. Thus, the goal of this study was to explore the relationship between mitochondrial dysfunction and the activation of the NOD-like receptor protein 3 (NLRP3) inflammasome in retinal cell death caused by light damage. We used a white light-emitting diode source to establish a mouse model of retinal light damage and observed significant changes of retinal structure and an impairment of visual function. Further experiments revealed that dynamin-related protein 1 (Drp1)-mediated excessive mitochondrial fission induced overproduction of reactive oxygen species in the retinal cells, leading to apoptosis, activation of microglia, and formation of the NLRP3 inflammasome. This, in turn, triggered a series of inflammatory cascade reactions, leading to pyroptosis. We also carried out red light and Drp1 inhibitor treatment and found that retinal damage and the decline in visual function caused by white light could be partially ameliorated. In conclusion, this study clarified the association between mitochondrial dynamics and the NLRP3 inflammasome in retinal light damage and provides opportunities for therapeutic intervention.
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Affiliation(s)
- Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Rongliang Yang
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Haibo Li
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Mengling You
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Zhuotao Liang
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhou Zeng
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Rongrong Zhou
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
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28
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Kim W, Yoon D, Song Y, Koh Y, Cao J, Ji D, Yang H, Eom H, Jing H, Kwak J, Lee W, Lee J, Shin H, Jin J, Wang M, Li J, Huang X, Deng X, Yang Z, Zhu J. EARLY SAFETY AND EFFICACY DATA FROM A PHASE I/II TRIAL OF DZD4205, A SELECTIVE JAK1 INHIBITOR, IN RELAPSED/REFRACTORY PERIPHERAL T‐CELL LYMPHOMA. Hematol Oncol 2021. [DOI: 10.1002/hon.57_2879] [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: 11/07/2022]
Affiliation(s)
- W.‐S. Kim
- Samsung Medical Center Department of Hematology and Oncology Seoul Korea
| | - D.‐H. Yoon
- Asan Medical Center Department of Oncology ‐ Hematologic Cancer & BMT center Seoul Korea
| | - Y. Song
- Peking University Cancer Hospital Department of Lymphoma Beijing China
| | - Y. Koh
- Seoul National University Hospital Department of Hemato‐Oncology Center Seoul Korea
| | - J. Cao
- Fudan University Shanghai Cancer Center Department of Oncology Shanghai China
| | - D. Ji
- Fudan University Shanghai Cancer Center Department of Oncology Shanghai China
| | - H. Yang
- Zhejiang Cancer Hospital Department of Lymphoma Hangzhou China
| | - H.‐S. Eom
- National Cancer Center Center for Hematologic Malignancy Goyang Korea
| | - H. Jing
- Peking University Third Hospital Department of Hematology Beijing China
| | - J.‐Y. Kwak
- Chonbuk National University Hospital Department of Hemato‐oncology Jeonju Korea
| | - W.‐S. Lee
- Inje University Busan Paik Hospital Department of Hemato‐oncology Busan Korea
| | - J.‐S. Lee
- Seoul National University Bundang Hospital Department of Hematology & Medical Oncology Seongnam Korea
| | - H.‐J. Shin
- Pusan National University Hospital Department of Hemato‐oncology Busan Korea
| | - J. Jin
- The First Affiliated Hospital of Zhejiang University Department of Hematology Hangzhou China
| | - M. Wang
- Dizal Pharmaceuticals Bioscience Shanghai China
| | - J. Li
- Dizal Pharmaceuticals Clinical Development Shanghai China
| | - X. Huang
- Dizal Pharmaceuticals Clinical Development Shanghai China
| | - X. Deng
- Dizal Pharmaceuticals Biostatistics Shanghai China
| | - Z. Yang
- Dizal Pharmaceuticals Clinical Development Shanghai China
| | - J. Zhu
- Peking University Cancer Hospital Department of Lymphoma Beijing China
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29
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Yang D, Rong R, Yang R, You M, Wang M, Li H, Ji D. CaMK II -induced Drp1 phosphorylation contributes to blue light-induced AIF-mediated necroptosis in retinal R28 cells. Biochem Biophys Res Commun 2021; 559:113-120. [PMID: 33940381 DOI: 10.1016/j.bbrc.2021.04.082] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 04/19/2021] [Indexed: 11/17/2022]
Abstract
Retinal damage caused by blue light has become an important public health concern. Mitochondria have been found to play a key role in light-induced retinal cell death. In this study, we aimed to clarify the molecular mechanism involved in mitochondrion-related retinal cell damage caused by blue light, the major component of light-emitting diodes (LEDs). Our results show that blue light (450 nm, 300lux)-induced R28 cell death is caspase independent and can be attenuated by necrostatin-1. Apoptosis-inducing factor (AIF) cleavage and translocation to the nucleus are involved in the cell death progress. Blue light exposure causes mitochondrial fragmentation, which is mediated by phosphorylation at dynamin-related protein 1 (Drp1) Ser616 site, but it does not alter the protein levels of fission or fusion machinery. Knocking down Drp1 or treatment with Drp1 inhibitor Mdivi-1 protects R28 cells from blue light. Overproduction of reactive oxygen species (ROS) is induced by blue light. The ROS scavenger Trolox decreases Drp1 Ser616 phosphorylation level and mitochondrial fragmentation upon blue light exposure. Moreover, Calcium/calmodulin-dependent protein kinase II (CaMKII) inhibitor KN93 blocks Drp1 phosphorylation and rescues mitochondrial fragmentation and AIF-mediated cell death caused by blue light. In conclusion, our data suggest that the CaMKII-Drp1 pathway plays a major role in blue light-induced AIF-mediated retinal cell damage.
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Affiliation(s)
- Dawei Yang
- The School of Life Sciences, Central South University, Changsha, 410078, Hunan Province, China; Eye Center of Xiangya Hospital and Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, 410008, Hunan Province, China
| | - Rong Rong
- Eye Center of Xiangya Hospital and Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, 410008, Hunan Province, China
| | - Rongliang Yang
- Eye Center of Xiangya Hospital and Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, 410008, Hunan Province, China
| | - Mengling You
- Eye Center of Xiangya Hospital and Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, 410008, Hunan Province, China
| | - Mengxiao Wang
- Eye Center of Xiangya Hospital and Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, 410008, Hunan Province, China
| | - Haibo Li
- Eye Center of Xiangya Hospital and Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, 410008, Hunan Province, China.
| | - Dan Ji
- Eye Center of Xiangya Hospital and Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, 410008, Hunan Province, China.
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30
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Abstract
The death of retinal ganglion cells (RGCs) is a key factor in the pathophysiology of all types of glaucoma, but the mechanism of pathogenesis of glaucoma remains unclear. RGCs are a group of central nervous system (CNS) neurons whose soma are in the inner retina. The axons of RGCs form the optic nerve and converge at the optic chiasma; from there, they project to the visual cortex via the lateral geniculate nucleus (LGN). In recent years, there has been increasing interest in the dysfunction and death of CNS and retinal neurons caused by transneuronal degeneration of RGCs, and the view that glaucoma is a widespread neurodegenerative disease involving CNS damage appears more and more frequently in the literature. In this review, we summarize the current knowledge of LGN and visual cortex neuron damage in glaucoma and possible mechanisms behind the damage. This review presents an updated and expanded view of neuronal damage in glaucoma, and reveals new and potential targets for neuroprotection and treatment.
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Affiliation(s)
- Mengling You
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
| | - Rong Rong
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
| | - Zhou Zeng
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
| | - Xiaobo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
| | - Dan Ji
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, China
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31
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You M, Rong R, Zeng Z, Li H, Xia X, Ji D. Single-cell RNA sequencing: A new opportunity for retinal research. Wiley Interdiscip Rev RNA 2021; 12:e1652. [PMID: 33754496 DOI: 10.1002/wrna.1652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 11/08/2022]
Abstract
Single-cell RNA sequencing (scRNA-seq) is a technology for single-cell transcriptome analysis that can be used to characterize complex dynamics of various retinal cell types. It provides deep scrutiny into the gene expression character of diverse cell types, lending insight into all the biological processes being carried out. The scRNA-seq is an alternative to regular RNA-seq, which does not achieve cellular heterogeneity. The retina, is a part of the central nervous system (CNS) and consists of six types of neurons and several types of glial cells. Studying retinal cell heterogeneity is important for understanding retinal diseases. Currently, scRNA-seq is employed to assess retina development and retinal disease pathogenesis and has improved our understanding of the relationship between the retina, its visual pathways, and the brain. Moreover, this technology provides new ideas on the sensitivity and molecular mechanisms of cell subtypes involved in retinal-related diseases. The application of scRNA-seq technology has given us a deeper understanding of the latest advancements and challenges in retinal development and diseases. We advocate scRNA-seq as one of the important tools for developing novel therapies for retinal diseases. This article is categorized under: RNA Methods > RNA Analyses in Cells RNA in Disease and Development > RNA in Development RNA in Disease and Development > RNA in Disease.
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Affiliation(s)
- Mengling You
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Rong Rong
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Zhou Zeng
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Haibo Li
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Xiaobo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Dan Ji
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
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32
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Rong R, Wang M, You M, Li H, Xia X, Ji D. Pathogenesis and prospects for therapeutic clinical application of noncoding RNAs in glaucoma: Systematic perspectives. J Cell Physiol 2021; 236:7097-7116. [PMID: 33634475 PMCID: PMC8451868 DOI: 10.1002/jcp.30347] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/24/2021] [Accepted: 02/16/2021] [Indexed: 12/18/2022]
Abstract
Noncoding ribonucleic acids (ncRNAs) are an increasingly studied class of RNA molecules with extensive biological activities, including important roles in human development, health, and disease. Glaucoma is a neurodegenerative disease of the retina, and one of the leading causes of blindness worldwide. However, the specific roles of ncRNAs in the development and progression of glaucoma are unclear, and related reports are fragmented. An in‐depth understanding of ncRNAs participating in the pathogenesis and progression of glaucoma would be helpful for opening up new avenues to facilitate the early diagnosis and clinical treatment. Therefore, in this review, we aimed to discuss the current research progress, the potentialfuture clinical applications and the research limitations of three critical classes of ncRNAs in glaucoma, namely microRNAs, long noncoding RNAs, and circular RNAs.
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Affiliation(s)
- Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Mengxiao Wang
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Mengling You
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Haibo Li
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Ophthalmology, Changsha, Hunan, China
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Liu MM, Zhou J, Ji D, Yang J, Huang YP, Wang Q. Diammonium glycyrrhizinate lipid ligand ameliorates lipopolysaccharide-induced acute lung injury by modulating vascular endothelial barrier function. Exp Ther Med 2021; 21:303. [PMID: 33717246 PMCID: PMC7885082 DOI: 10.3892/etm.2021.9734] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 11/24/2020] [Indexed: 01/12/2023] Open
Abstract
The aim of the present study was to investigate the effects of diammonium glycyrrhizinate lipid ligand (DGLL) treatment on acute lung injury (ALI) and pulmonary edema induced by lipopolysaccharide (LPS) in Sprague-Dawley rats. Rats orally received 30, 60 and 120 mg/kg DGLL. After 1 h, the rat ALI model was established by LPS (10 mg/kg) intraperitoneal injection. After 6 h, lung injury was evaluated using hematoxylin and eosin staining techniques. Pulmonary edema was evaluated using lung wet-dry weight ratio, protein concentrations in the bronchoalveolar lavage fluid (BALF) and Evans blue (EB) extravasation in lung tissue. The expression levels of tumor necrosis factor (TNF)-α and interleukin (IL)-1β in lung tissues were measured using ELISA. Myeloperoxidase (MPO) expression levels were detected by immunohistochemical staining. Western blotting was used to measure the expression level changes of intercellular adhesion molecule (ICAM)-1, as well as adherent and tight junction proteins, including vascular endothelial (VE)-cadherin, zonula occludens (ZO)-1, occludin and junctional adhesion molecule (JAM)-1 that were associated with pulmonary inflammation and microvascular permeability. DGLL treatment significantly alleviated ALI induced by LPS, which was demonstrated by reduction of MPO-positive cells and expression levels of TNF-α, IL-1β and ICAM-1 in rat lung tissues. In addition, DGLL abrogated LPS-induced pulmonary edema, decreased the protein concentration in BALF and reduced EB extravasation. DGLL also reversed the reduced expression of VE-cadherin and tight junction proteins, including ZO-1, occludin and JAM-1 in the lung tissues caused by LPS. In conclusion, DGLL exhibits a protective effect on LPS-induced rat ALI, which is associated with the inhibition of inflammatory cell infiltration and microvascular barrier disruption. The present results provide a theoretical basis for the application of DGLL for the potential clinical treatment of ALI.
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Affiliation(s)
- Mei-Mei Liu
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui 230601, P.R. China
| | - Jin Zhou
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui 230601, P.R. China
| | - Dan Ji
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui 230601, P.R. China
| | - Jun Yang
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui 230601, P.R. China
| | - Yan-Ping Huang
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui 230601, P.R. China
| | - Qi Wang
- Department of Histology and Embryology, Anhui Medical College, Hefei, Anhui 230601, P.R. China
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Huang Y, Wang S, Huang F, Zhang Q, Qin B, Liao L, Wang M, Wan H, Yan W, Chen D, Liu F, Jiang B, Ji D, Xia X, Huang J, Xiong K. c-FLIP regulates pyroptosis in retinal neurons following oxygen-glucose deprivation/recovery via a GSDMD-mediated pathway. Ann Anat 2021; 235:151672. [PMID: 33434657 DOI: 10.1016/j.aanat.2020.151672] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/26/2020] [Accepted: 12/09/2020] [Indexed: 02/06/2023]
Abstract
Cellular FLICE-inhibitory protein (c-FLIP), an anti-apoptotic regulator, shows remarkable similarities to caspase-8, which plays a key role in the cleavage of gasdermin D (GSDMD). It has been reported that the oxygen-glucose deprivation/recovery (OGD/R) model and lipopolysaccharide (LPS)/adenosine triphosphate (ATP) treatment could induce inflammation and pyroptosis. However, the regulatory role of c-FLIP in the pyroptotic death of retinal neurons is unclear. In this study, we hypothesized that c-FLIP might regulate retinal neuronal pyroptosis by GSDMD cleavage. To investigate this hypothesis, we induced retinal neuronal damage in vitro (OGD/R and LPS/ATP) and in vivo (acute high intraocular pressure [aHIOP]). Our results demonstrated that the three injuries triggered the up-regulation of pyroptosis-related proteins, and c-FLIP could cleave GSDMD to generate a functional N-terminal (NT) domain of GSDMD, causing retinal neuronal pyroptosis. In addition, c-FLIP knockdown in vivo ameliorated the already established visual impairment mediated by acute IOP elevation. Taken together, these findings revealed that decreased c-FLIP expression protected against pyroptotic death of retinal neurons possibly by inhibiting GSDMD-NT generation. Therefore, c-FLIP might provide new insights into the pathogenesis of pyroptosis-related diseases and help to elucidate new therapeutic targets and potential treatment strategies.
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Affiliation(s)
- Yanxia Huang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China; Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Shuchao Wang
- Center for Medical Research, The Second Xiangya Hospital of Central South University, Changsha 410013, China
| | - Fei Huang
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha 410013, China
| | - Qi Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - Bo Qin
- Department of Anatomy, Medical College of Hubei Polytechnic University, Huang shi 435003, China
| | - Lvshuang Liao
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - Mi Wang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - Hao Wan
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - Weitao Yan
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - Dan Chen
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China
| | - Fengxia Liu
- Department of Human Anatomy, School of Basic Medical Science, Xinjiang Medical University, Urumqi 830001, China
| | - Bing Jiang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha 410008, China
| | - Dan Ji
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiaobo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Jufang Huang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China.
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, China.
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Song C, Chongsuvivatwong V, Wangdui S, Mima D, Zhuoma C, Ji D, Luobu O, Sriplung H. Coverage and effectiveness of hypertension screening in different altitudes of Tibet autonomous region. BMC Public Health 2021; 21:33. [PMID: 33407265 PMCID: PMC7788880 DOI: 10.1186/s12889-020-09858-0] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 11/09/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Tibet is an autonomous region in China located around an average altitude of 4500 m above sea level. Since 2012 the local government of Tibet has been providing free physical examinations, including screening for hypertension. However, the coverage and effectiveness of this free program have not been uncovered. This study aims to assess the coverage and effectiveness of hypertension screening and management program in 3 altitude levels of Tibet, and also the determinants of the success of the screening program. METHODS A stratified cluster survey was conducted among 1636 residents aged 18 years or over in three different altitude areas in Tibet. We adjusted for age and sex based on national census data and used weighted logistic regression models to find factors associated with hypertension screening. RESULTS The coverage of the hypertension screening program evaluated by participation rate in the previous screening was 94.9%, while 24.7% (95% CI: 22.1-27.3%) of them were diagnosed with hypertension. Females and alcohol drinkers were more likely to be screened. Among those diagnosed with hypertension, 28.7% had it under control. High altitude areas had a high proportion of controlled hypertension. The overall rate of controlled hypertension in high, moderate and low altitude areas was 35.1% (95% CI: 24.8-45.3%), 32.7% (95% CI: 22.2-43.2%) and 23.7% (95% CI: 14.7-32.6%), respectively. Younger aged persons were more likely to have better control of their hypertension. CONCLUSIONS The coverage of hypertension screening in Tibet was high, especially in the low altitude areas. However, the effectiveness of hypertension control was low, indicating a need to implement the treatment adherence routines into the current screening interventions.
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Affiliation(s)
- Ci Song
- Medical College, Tibet University, Lhasa, 850002 China
- Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110 Thailand
| | | | - Suolang Wangdui
- Bomi county centers for disease control and prevention, Nyingchi, 860300 China
| | - Danzeng Mima
- Dagze district centers for disease control and prevention, Lhasa, 850100 China
| | - Cuoji Zhuoma
- Nagarze county centers for disease control and prevention, Lhokha, 851100 China
| | - D. Ji
- Medical College, Tibet University, Lhasa, 850002 China
| | - Ouzhu Luobu
- Medical College, Tibet University, Lhasa, 850002 China
| | - Hutcha Sriplung
- Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110 Thailand
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Li H, Jiang H, Rong R, Jiang J, Ji D, Song W, Xia X. Identification of GJA3 p.S50P Mutation in a Chinese Family with Autosomal Dominant Congenital Cataract and Its Underlying Pathogenesis. DNA Cell Biol 2020; 39:1760-1766. [PMID: 32808810 DOI: 10.1089/dna.2020.5605] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Congenital cataract refers to a lens opacity caused by multiple etiological factors, including genetic mutation, abnormal metabolism of the lens, and infection. Currently, there are >100 known disease-causing genes as well as 60 known mutations in the Cx46 gene (Gap junction alpha-3, GJA3) associated with congenital cataracts. Dysfunction of gap junctions impairs homeostasis in lens cells, thereby inducing cataract pathogenesis. This study aims to identify the disease-causing mutation in a family with congenital cataract, and to further explore the possible pathogenic mechanism resulting from this mutation. We identified that a recurrent heterozygous missense mutation c.T148C (p.S50P) in GJA3 was the pathogenic mutation in this family. Previously, this mutation was found in a British family causing bilateral congenital cataract. We further demonstrated that CX46 wild type (WT) was coupled through functional gap junctions in HeLa cells, while mutant Cx46 S50P lost this ability. Moreover, the half-life of Cx46 S50P was longer than that of Cx46 WT, Cx46 S50P protein was also localized to the endoplasmic reticulum and induced more reactive oxygen species compared to Cx46 WT, which may lead to dysregulation of Cx46-formed gap junction. Collectively, our study defines the genetics basis of a congenital cataract family as well as the cellular mechanisms of mutant Cx46 S50P, and provides useful information for further studies of the pathogenesis and therapeutic strategy for treating congenital cataract.
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Affiliation(s)
- Haibo Li
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, China
| | - Haibo Jiang
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
| | - Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
| | - Jian Jiang
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, China
| | - Weitao Song
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Ophthalmology, Central South University, Changsha, China
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Huang J, Zhu T, Rong R, You M, Ji D, Li H. FUN14 domain-containing 1-mediated mitophagy suppresses interleukin-1β production in macrophages. Int Immunopharmacol 2020; 88:106964. [PMID: 33182075 DOI: 10.1016/j.intimp.2020.106964] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/14/2020] [Accepted: 08/28/2020] [Indexed: 01/18/2023]
Abstract
Mitochondria play a critical role in triggering immune response. Although recent evidence indicates that autophagy/mitophagy can suppress inflammation via regulation of mitochondrial homeostasis, limited information is available regarding physiological regulation of mitochondria-controlled inflammation. In this study, we investigated FUN14 domain containing 1 (FUNDC1)-mediated mitophagy in the regulation of interleukin-1β (IL-1β) in vitro and in vivo, wild-type FUNDC1 and its mitophagy defective Y18A/L21A mutant were analyzed in bone marrow-derived macrophages (BMDMs)for their effects on IL-1β expression and mitochondrial damage. The current study identified that LPS plus nigericin stimulation induced NLR family pyrin domain containing 3 (NLRP3) inflammasome activation, which was detected by IL-1β expression. Moreover, FUNDC1-mediated mitophagy promoted the alleviation of intracellular reactive oxygen species (ROS). IL-1β production was suppressed by the overexpression of wild-type FUNDC1, but not the Y18A/L21A mutant. Our results suggest that FUNDC1 suppresses LPS plus nigericin-mediated IL-1β production through its regulatory effect on mitophagy, which will greatly promote the understanding of mitophagy-related protein in the regulation of immune response.
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Affiliation(s)
- Jia Huang
- Department of Intensive Care Unit, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen Third People's Hospital, Shenzhen 518112, China
| | - Tengfei Zhu
- Department of Intensive Care Unit, Second Hospital Affiliated to Southern University of Science and Technology, Shenzhen Third People's Hospital, Shenzhen 518112, China
| | - Rong Rong
- Eye Center of Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Mengling You
- Eye Center of Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
| | - Dan Ji
- Eye Center of Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China; Hunan Key Laboratory of Ophthalmogy, Central South University, Changsha 410008, Hunan Province, China.
| | - Haibo Li
- Eye Center of Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China; Hunan Key Laboratory of Ophthalmogy, Central South University, Changsha 410008, Hunan Province, China.
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38
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You M, Xia X, Li H, Wu J, Rong R, Zeng Z, Xiong K, Huang J, Tang L, Lei H, Wu W, Ji D. Normal vitreous promotes angiogenesi via the epidermal growth factor receptor. FASEB J 2020; 34:14799-14809. [PMID: 32910506 DOI: 10.1096/fj.201902862rrr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 08/16/2020] [Accepted: 08/23/2020] [Indexed: 11/11/2022]
Abstract
Vitreous, a transparent tissue in our body, contains anti-angiogenesis factors. Our previous work reported that vitreous activates the signaling pathway of epidermal growth factor receptor (EGFR), which plays a critical role in angiogenesis. The aim of this study was to determine the role of EGFR in vitreous-induced angiogenesis-related cellular responses in vitro. Using a pharmacologic and molecular approach, we found that vitreous increased proliferation and migration via EGFR in human umbilical vein endothelial cells (HUVECs). Furthermore, we demonstrated that vitreous promoted tube formation via EGFR in HUVECs. Subsequently, depletion of EGFR using CRISPR/Cas9 and blockage with EGFR inhibitor AG1478 suppressed vitreous-induced Akt activation and cell proliferation, migration, and tube formation in HUVECs. The significance of the angiogenic effect derived from vitreous demonstrates the importance of vitreous in the ocular physiology and the pathobiology of angiogenesis-related ophthalmic diseases, such as proliferative diabetic retinopathy.
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Affiliation(s)
- Mengling You
- Departments of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, P.R. China
| | - Xiaobo Xia
- Departments of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, P.R. China
| | - Haibo Li
- Departments of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, P.R. China
| | - Jiayu Wu
- School of Life Sciences, Central South University, Changsha, P.R. China
| | - Rong Rong
- Departments of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, P.R. China
| | - Zhou Zeng
- Departments of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, P.R. China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, P.R. China
| | - Jufang Huang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, P.R. China
| | - Luosheng Tang
- Departments of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Hetian Lei
- Shenzhen Eye Hospital, Shenzhen Eye Institute, Shenzhen, P.R. China
| | - Wenyi Wu
- Departments of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, P.R. China
| | - Dan Ji
- Departments of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Ophthalmology, Changsha, P.R. China
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Wang M, Wan H, Wang S, Liao L, Huang Y, Guo L, Liu F, Shang L, Huang J, Ji D, Xia X, Jiang B, Chen D, Xiong K. RSK3 mediates necroptosis by regulating phosphorylation of RIP3 in rat retinal ganglion cells. J Anat 2020; 237:29-47. [PMID: 32162697 PMCID: PMC7309291 DOI: 10.1111/joa.13185] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 12/15/2022] Open
Abstract
Receptor-interacting protein 3 (RIP3) plays an important role in the necroptosis signaling pathway. Our previous studies have shown that the RIP3/mixed lineage kinase domain-like protein (MLKL)-mediated necroptosis occurs in retinal ganglion cell line 5 (RGC-5) following oxygen-glucose deprivation (OGD). However, upstream regulatory pathways of RIP3 are yet to be uncovered. The purpose of the present study was to investigate the role of p90 ribosomal protein S6 kinase 3 (RSK3) in the phosphorylation of RIP3 in RGC-5 cell necroptosis following OGD. Our results showed that expression of RSK3, RIP3, and MLKL was upregulated in necroptosis of RGC-5 after OGD. A computer simulation based on our preliminary results indicated that RSK3 might interact with RIP3, which was subsequently confirmed by co-immunoprecipitation. Further, we found that the application of a specific RSK inhibitor, LJH685, or rsk3 small interfering RNA (siRNA), downregulated the phosphorylation of RIP3. However, the overexpression of rip3 did not affect the expression of RSK3, thereby indicating that RSK3 could be a possible upstream regulator of RIP3 phosphorylation in OGD-induced necroptosis of RGC-5 cells. Moreover, our in vivo results showed that pretreatment with LJH685 before acute high intraocular pressure episodes could reduce the necroptosis of retinal neurons and improve recovery of impaired visual function. Taken together, our findings suggested that RSK3 might work as an upstream regulator of RIP3 phosphorylation during RGC-5 necroptosis.
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Affiliation(s)
- Mi Wang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Hao Wan
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Shuchao Wang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Lvshuang Liao
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Yanxia Huang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Limin Guo
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
| | - Fengxia Liu
- Department of Human AnatomySchool of Basic Medical ScienceXinjiang Medical UniversityUrumqiChina
| | - Lei Shang
- Jiangxi Research Institute of Ophthalmology and Visual SciencesAffiliated Eye Hospital of Nanchang UniversityNanchangChina
| | - Jufang Huang
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
| | - Dan Ji
- Hunan Key Laboratory of OphthalmologyChangshaChina
- Department of OphthalmologyXiangya HospitalCentral South UniversityChangshaChina
| | - Xiaobo Xia
- Hunan Key Laboratory of OphthalmologyChangshaChina
- Department of OphthalmologyXiangya HospitalCentral South UniversityChangshaChina
| | - Bin Jiang
- Department of OphthalmologyThe Second Xiangya HospitalCentral South UniversityChangshaChina
| | - Dan Chen
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
| | - Kun Xiong
- Department of Anatomy and NeurobiologySchool of Basic Medical ScienceCentral South UniversityChangshaChina
- Hunan Key Laboratory of OphthalmologyChangshaChina
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40
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Ji D, An M, Fang Q. Whether miR-4293 rs12220909 variant affects cancer susceptibility: evidence from 11255 subjects. Artif Cells Nanomed Biotechnol 2020; 48:933-938. [PMID: 32496828 DOI: 10.1080/21691401.2020.1773483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Background: miR-4293 rs12220909 polymorphism was reported associated with tumorigenesis, but the results are controversial. Thus, we planned to verify and obtain precise results.Methods: Databases were searched and reviewed up to November, 2019. Case-control studies which concern about the association between cancer risks and miR-4293 polymorphisms were all enrolled. The odds ratios (ORs) and 95% confidence intervals (CIs) calculated by the Z test were used to assess the underlying links. We also prospected how the miR-4293 impacts biological process through its target genes.Result: Finally, there are seven independent studies meet the enrolled criteria, along with 5147 cases and 6108 healthy controls. We revealed that there is a significant decrease effect of miR-4293 rs12220909 to cancer risks in heterozygote genetic model (BA vs. AA: OR = 0.857, p = .032), the similar results were also uncovered in PB control group, lung cancer and the studies conform to HWE. Results from GO items and KEGG pathway analysis illustrated that myeloid cell development, transcription factor complex, RNA polymerase II regulatory region DNA binding were regulated by miR-4293.Conclusion: In summary, our meta-analysis chase down heterozygote rs12220909 polymorphism of miR-4293 is a protective factor to cancer initiation, especially for lung cancer.
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Affiliation(s)
- Dan Ji
- Department of foundation courses, Anhui Medical College, Hefei, China
| | - Mei An
- Department of foundation courses, Anhui Medical College, Hefei, China
| | - Qiong Fang
- Department of foundation courses, Anhui Medical College, Hefei, China
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Ji D, Mao Z, He J, Peng S, Wen H. Characterization and genomic function analysis of phenanthrene-degrading bacterium Pseudomonas sp. Lphe-2. J Environ Sci Health A Tox Hazard Subst Environ Eng 2020; 55:549-562. [PMID: 31913782 DOI: 10.1080/10934529.2019.1711352] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 04/18/2019] [Revised: 12/24/2019] [Accepted: 12/28/2019] [Indexed: 06/10/2023]
Abstract
A stain of Pseudomonas sp. Lphe-2, which could degrade phenanthrene as the main carbon and energy source, was isolated from the aerobic sludge of a coking plant. Then its biodegradation characteristics, whole genome sequence and biodegradation pathway were examined. The Lphe-2 strain exhibited broad-spectrum degradation activities for various polycyclic aromatic hydrocarbons (PAHs), including naphthalene (NAP), phenanthrene (PHE), and pyrene (PYR). Under the optimal conditions, the degradation efficiency of phenanthrene (100 mg/L) is 92.76% on the 7th day, and 2-carboxybenzaldehyde and 1-hydroxy-2-naphthoic acid are the major metabolites found in phenanthrene metabolism. Genomic analysis of Pseudomonas sp. Lphe-2 showed that a total of 3879 genes from the Lphe-2 strain were annotated based on the COG classification, and the genomic information was annotated to 185 metabolic pathways. Based on the intermediate metabolites detected by Gas Chromatography-Mass Spectrometer (GC-MS) and all potential phenanthrene-degrading genes identified by BLAST search, a phenanthrene biodegradation pathway of Lphe-2 strain was proposed. These results suggested that Lphe-2 strain has a good prospect in the bioremediation of PAHs pollution.
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Affiliation(s)
- Dan Ji
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Zhen Mao
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Jian He
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Sihan Peng
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, China
| | - Hongyu Wen
- School of life Sciences, Jiangsu Normal University, Xuzhou, China
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42
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Zhou RR, Li HB, You QS, Rong R, You ML, Xiong K, Huang JF, Xia XB, Ji D. Silencing of GAS5 Alleviates Glaucoma in Rat Models by Reducing Retinal Ganglion Cell Apoptosis. Hum Gene Ther 2019; 30:1505-1519. [PMID: 31608710 DOI: 10.1089/hum.2019.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Rong-Rong Zhou
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Hai-Bo Li
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - Qi-Sheng You
- Casey Eye Institute, Oregon Health Science University, Portland, Oregon
| | - Rong Rong
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - Meng-Ling You
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Ju-Fang Huang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Xiao-Bo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - Dan Ji
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
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43
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Sorenson WR, Sullivan D, Baugh S, Collison M, Das R, Erickson A, Harmon T, Heathman S, Ji D, Khandelwal B, Kohn A, Morris S, Norden D, Peng T, Post B, Powers E, Reif K, Schulzki G, Shevchuk C, Solyom A. Determination of Campesterol, Stigmasterol, and Beta-Sitosterol in Saw Palmetto Raw Materials and Dietary Supplements by Gas Chromatography: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/90.3.670] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
An interlaboratory study was conducted to evaluate a method for the determination of campesterol, stigmasterol, and beta-sitosterol in saw palmetto raw materials and dietary supplements at levels >1.00 mg/100 g based on a 23 g sample. Test samples were saponified at high temperature with ethanolic KOH solution. The unsaponifiable fraction containing phytosterols (campesterol, stigmasterol, and beta-sitosterol) was extracted with toluene. Phytosterols were derivatized to trimethylsilyl ethers and then quantified by gas chromatography with hydrogen flame ionization detection. Twelve blind duplicates, one of which was fortified, were successfully analyzed by 10 collaborators. Recoveries were obtained for the sample that was fortified. The results were 99.8, 111, and 111% for campesterol, stigmasterol, and beta-sitosterol, respectively. For repeatability, the relative standard deviation (RSDr) ranged from 3.93 to 17.3% for campesterol, 3.56 to 22.7% for stigmasterol, and 3.70 to 43.9% for beta-sitosterol. For reproducibility, the RSDR ranged from 7.97 to 22.6%, 0 to 26.7%, and 5.27 to 43.9% for campesterol, stigmasterol, and beta-sitosterol, respectively. Overall, the Study Director approved 5 materials with acceptable HorRat values for campesterol, stigmasterol, and beta-sitosterol ranging from 1.02 to 2.16.
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Szpylka J, DeVries JW, Bhandari S, Bui MH, Ji D, Konings E, Lewis R, Maas P, Parish H, Post B, Schierle J, Sullivan; D, Taylor A, Wang J, Ware G, Woollard D, Wu T. Determination of β-Carotene in Supplements and Raw Materials by Reversed-Phase High Pressure Liquid Chromatography: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/88.5.1279] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Twelve laboratories representing 4 countries participated in an interlaboratory study conducted to determine all-trans-β-carotene and total β-carotene in dietary supplements and raw materials. Thirteen samples were sent as blind duplicates to the collaborators. Results obtained from 11 laboratories are reported. For products composed as softgels and tablets that were analyzed for total β-carotene, the reproducibility relative standard deviation (RSDR) ranged from 3.35 to 23.09% and the HorRat values ranged from 1.06 to 3.72. For these products analyzed for trans β-carotene, the reproducibility relative standard deviation (RSDR) ranged from 4.28 to 22.76% and the HorRat values ranged from 0.92 to 3.37. The RSDr and HorRat values in the analysis of a beadlet raw material were substantial and it is believed that the variability within the material itself introduced significant variation in subsampling. The method uses high pressure liquid chromatography (LC) in the reversed-phase mode with visible light absorbance for detection and quantitation. If high levels of α-carotenes are present, a second LC system is used for additional separation and quantitation of the carotene species. It is recommended that the method be adopted as an AOAC Official Method.
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Affiliation(s)
- John Szpylka
- Medallion Laboratories Division of General Mills, 9000 Plymouth Ave N, Minneapolis, MN 55427-3870
| | - Jonathan W DeVries
- Medallion Laboratories Division of General Mills, 9000 Plymouth Ave N, Minneapolis, MN 55427-3870
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Ding LM, Hu HX, Wang YJ, Ji D, Ni LY, Sun ZH, Ding HY. [Tall cell variant of papillary breast carcinoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2019; 48:815-817. [PMID: 31594051 DOI: 10.3760/cma.j.issn.0529-5807.2019.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- L M Ding
- Department of Pathology, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - H X Hu
- Department of General Surgery, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - Y J Wang
- Clinicopathological Center, the Fourth Affiliated Hospital of Anhui Medical University, Hefei 230011, China
| | - D Ji
- Department of Pathology, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - L Y Ni
- Department of Pathology, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - Z H Sun
- Department of Pathology, Yi'an District People's Hospital, Tongling City, Anhui Province, Tongling 244100, China
| | - H Y Ding
- Department of Pathology, the Seventh Medical Center of PLA General Hospital, Beijing 100700, China
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Wang S, Liao L, Huang Y, Wang M, Zhou H, Chen D, Liu F, Ji D, Xia X, Jiang B, Huang J, Xiong K. Pin1 Is Regulated by CaMKII Activation in Glutamate-Induced Retinal Neuronal Regulated Necrosis. Front Cell Neurosci 2019; 13:276. [PMID: 31293391 PMCID: PMC6603237 DOI: 10.3389/fncel.2019.00276] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 06/07/2019] [Indexed: 12/28/2022] Open
Abstract
In our previous study, we reported that peptidyl-prolyl isomerase 1 (Pin1)-modulated regulated necrosis (RN) occurred in cultured retinal neurons after glutamate injury. In the current study, we investigated the role of calcium/calmodulin-dependent protein kinase II (CaMKII) in Pin1-modulated RN in cultured rat retinal neurons, and in an animal in vivo model. We first demonstrated that glutamate might lead to calcium overloading mainly through ionotropic glutamate receptors activation. Furthermore, CaMKII activation induced by overloaded calcium leads to Pin1 activation and subsequent RN. Inactivation of CaMKII by KN-93 (KN, i.e., a specific CaMKII inhibitor) application can decrease the glutamate-induced retinal neuronal RN. Finally, by using an animal in vivo model, we also demonstrated the important role of CaMKII in glutamate-induced RN in rat retina. In addition, flash electroretinogram results provided evidence that the impaired visual function induced by glutamate can recover after CaMKII inhibition. In conclusion, CaMKII is an up-regulator of Pin1 and responsible for the RN induced by glutamate. This study provides further understanding of the regulatory pathway of RN and is a complementary mechanism for Pin1 activation mediated necrosis. This finding will provide a potential target to protect neurons from necrosis in neurodegenerative diseases, such as glaucoma, diabetic retinopathy, and even central nervous system diseases.
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Affiliation(s)
- Shuchao Wang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China.,Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Lvshuang Liao
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yanxia Huang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Mi Wang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Hongkang Zhou
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Dan Chen
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Fengxia Liu
- Department of Human Anatomy, School of Basic Medical Science, Xinjiang Medical University, Ürümqi, China
| | - Dan Ji
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaobo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - Bing Jiang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jufang Huang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
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Duan X, Yang S, Zhang H, Wu J, Zhang Y, Ji D, Tie L, Boerkoel C. A Novel AMELX Mutation, Its Phenotypic Features, and Skewed X Inactivation. J Dent Res 2019; 98:870-878. [DOI: 10.1177/0022034519854973] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Amelogenesis imperfecta (AI) is a group of genetic disorders of defective dental enamel. Mutation of AMELX encoding amelogenin on the X chromosome is a major cause of AI. Here we report a Chinese family with hypoplastic and hypomineralized AI. Whole exome analysis revealed a novel mutation c.185delC in exon 5 of AMELX causing the frame shift p.Pro62ArgfsTer47 (or p.Pro62Argfs*47). By sequencing of polymerase chain reaction products and T-vector clones, the mutation was confirmed as homozygous in the proband, hemizygous in her father, and heterozygous in her mother. The proband and her father had small and yellowish teeth with thin and rough enamel that was radiographically indistinguishable from the underlying dentin. Scanning electronic microscopy of 1 maternal tooth showed cracks and exposed loosely packed enamel prisms in affected areas. Consistent with a 25:75 skewing of X inactivation in the peripheral blood DNA as measured by androgen receptor allele methylation, the surface of the mother’s tooth had alternating vertical ridges of transparent normal and white chalky enamel in a 34:66 ratio. In summary, this study provides one of the few phenotypic comparisons of hemizygous and homozygous AMELX mutations and suggests that the skewing of X inactivation in AI contributes to the phenotypic variations in heterozygous carriers of X-linked AI.
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Affiliation(s)
- X. Duan
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - S. Yang
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - H. Zhang
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - J. Wu
- Department of Prosthodontic, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - Y. Zhang
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - D. Ji
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - L. Tie
- Department of Oral Biology, Clinic of Oral Rare and Genetic Diseases, School of Stomatology, Air Force Military Medical University (the Fourth Military Medical University), Xi’an, China
| | - C.F. Boerkoel
- Department of Medical Genetics, Children’s and Women’s Health Centre of BC, University of British Columbia, Vancouver, BC, Canada
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Li Q, Luo L, Lu X, Ji X, Ji D, Feng H, Jiang S. PROTEOMIC ANALYSIS OF SERUM PROTEINS AT THE ONSET OF ARDS IN PATIENTS. Chest 2019. [DOI: 10.1016/j.chest.2019.02.366] [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] Open
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49
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Ji D, Peng L, Shen J, Deng M, Mao Z, Tan L, Wang M, Xiang R, Wang J, Shah SSA. Inert V2O3 oxide promotes the electrocatalytic activity of Ni metal for alkaline hydrogen evolution. Chem Commun (Camb) 2019; 55:3290-3293. [DOI: 10.1039/c8cc10128k] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Inert V2O3 oxide without reducible metal cations has been demonstrated to greatly promote the HER activity of Ni by creating highly active metal/oxide interfaces.
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50
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Wang S, Huang Y, Yan Y, Zhou H, Wang M, Liao L, Wang Z, Chen D, Ji D, Xia X, Liu F, Huang J, Xiong K. Calpain2 but not calpain1 mediated by calpastatin following glutamate-induced regulated necrosis in rat retinal neurons. Ann Anat 2019; 221:57-67. [DOI: 10.1016/j.aanat.2018.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 08/15/2018] [Accepted: 08/16/2018] [Indexed: 12/12/2022]
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