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Han D, Chang X, Xu D, Shen J, Fan A, Wang M, Li D, Chen X, Wang C, Wu Y, Yang Z, Li J, Wang S. Yi-Qi-Huo-Xue decoction alleviates intracerebral hemorrhage injury through inhibiting neuronal autophagy of ipsilateral cortex via BDNF/TrkB pathway. Phytomedicine 2024; 128:155438. [PMID: 38537443 DOI: 10.1016/j.phymed.2024.155438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/26/2024] [Accepted: 02/08/2024] [Indexed: 05/01/2024]
Abstract
BACKGROUND Yi-Qi-Huo-Xue Decoction (YQHXD), a traditional Chinese medicine formula, has demonstrated efficacy in the clinical treatment of intracerebral hemorrhage (ICH) for over a decade. Nevertheless, the precise pharmacotherapeutic compounds of YQHXD capable of penetrating into cerebral tissue and the pharmacological underpinnings of YQHXD remain ambiguous. METHODS The active components of YQHXD in rat brains was analyzed by ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry. The potential targets, pathways and biological progresses of YQHXD ameliorating ICH induced injury was predicted by network pharmacology. Moreover, collagenase-induced ICH rat model, primary cortex neurons exposed to hemin and molecular docking were applied to validate the molecular mechanisms of YQHXD. RESULTS Eleven active components of YQHXD were identified within the brains. Employing the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases, our investigation concentrated on the roles of autophagy and the BDNF/TrkB signaling pathway in the pharmacological context. The pharmacological results revealed that YQHXD alleviated neurological dysfunction, brain water content, brain swelling, and pathological injury caused by ICH. Meanwhile, YQHXD inhibited autophagy influx and autophagosome in vivo, and regulated cortex neuronal autophagy and TrkB/BDNF pathway both in vivo and in vitro. Subsequently, N-acetyl serotonin (NAS), a selective TrkB agonist, was employed to corroborate the significance of the BDNF/TrkB pathway in this process. The combination of NAS and YQHXD did not further enhance the protective efficacy of YQHXD in ICH rats. Additionally, outcomes of molecular docking analysis revealed that nine compounds of YQHXD exhibited potential regulatory effects on TrkB. CONCLUSIONS Ipsilateral neuronal autophagy and BDNF/TrkB pathway were activated 72 h after ICH. YQHXD effectively resisted injury induced by ICH, which was related with suppression of ipsilateral neuronal autophagy via BDNF/TrkB pathway. This study provides novel insights into the therapeutic mechanisms of traditional Chinese medicine in the context of ICH treatment.
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Affiliation(s)
- Dan Han
- Department of Pharmacy, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, 321 Zhongshan Road, Gulou District, Nanjing, 210000, Jiangsu, China; Nanjing Medical Center for Clinical Pharmacy, 321 Zhongshan Road, Gulou District, Nanjing, 210000, Jiangsu, China
| | - Xinyue Chang
- School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Gulou District, Nanjing 210000, Jiangsu, China
| | - Dan Xu
- Zonhon Biopharma Institute, inc., 518 Yunhe Road, Xinbei District, Changzhou, 213000, Jiangsu, China
| | - Jizhong Shen
- Department of Pharmacy, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, 321 Zhongshan Road, Gulou District, Nanjing, 210000, Jiangsu, China
| | - Ali Fan
- TriApex Laboratories Co., Ltd, 9 Xinglong Road, Jiangbei District, Nanjing, 210000, Jiangsu, China
| | - Meihua Wang
- Department of Pharmacy, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, 321 Zhongshan Road, Gulou District, Nanjing, 210000, Jiangsu, China
| | - Dingran Li
- School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Gulou District, Nanjing 210000, Jiangsu, China
| | - Xiangkai Chen
- School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, 24 Tongjia Lane, Gulou District, Nanjing 210000, Jiangsu, China
| | - Cheng Wang
- School of Pharmacy, Changzhou University, 21 Gehuzhong Road, Wujin District, Changzhou, 213000, Jiangsu, China
| | - Yi Wu
- Department of Neurosurgery, The Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Qinhuai District, Nanjing, 210000, Jiangsu, China
| | - Zhaocong Yang
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Gulou District, Nanjing, 210000, Jiangsu, China
| | - Jian Li
- Department of Neurosurgery, The Affiliated Hospital of Nanjing University of Chinese Medicine, 155 Hanzhong Road, Qinhuai District, Nanjing, 210000, Jiangsu, China.
| | - Siliang Wang
- Department of Pharmacy, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, 321 Zhongshan Road, Gulou District, Nanjing, 210000, Jiangsu, China; Nanjing Medical Center for Clinical Pharmacy, 321 Zhongshan Road, Gulou District, Nanjing, 210000, Jiangsu, China.
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Li J, Wang W, Li S, Qiao Z, Jiang H, Chang X, Zhu Y, Tan H, Ma X, Dong Y, He Z, Wang Z, Liu Q, Yao S, Yang C, Yang M, Cao L, Zhang J, Li W, Wang W, Yang Z, Rong P. Smad2/3/4 complex could undergo liquid liquid phase separation and induce apoptosis through TAT in hepatocellular carcinoma. Cancer Cell Int 2024; 24:176. [PMID: 38769521 DOI: 10.1186/s12935-024-03353-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 05/02/2024] [Indexed: 05/22/2024] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) represents one of the most significant causes of mortality due to cancer-related deaths. It has been previously reported that the TGF-β signaling pathway may be associated with tumor progression. However, the relationship between TGF-β signaling pathway and HCC remains to be further elucidated. The objective of our research was to investigate the impact of TGF-β signaling pathway on HCC progression as well as the potential regulatory mechanism involved. METHODS We conducted a series of bioinformatics analyses to screen and filter the most relevant hub genes associated with HCC. E. coli was utilized to express recombinant protein, and the Ni-NTA column was employed for purification of the target protein. Liquid liquid phase separation (LLPS) of protein in vitro, and fluorescent recovery after photobleaching (FRAP) were utilized to verify whether the target proteins had the ability to drive force LLPS. Western blot and quantitative real-time polymerase chain reaction (qPCR) were utilized to assess gene expression levels. Transcription factor binding sites of DNA were identified by chromatin immunoprecipitation (CHIP) qPCR. Flow cytometry was employed to examine cell apoptosis. Knockdown of target genes was achieved through shRNA. Cell Counting Kit-8 (CCK-8), colony formation assays, and nude mice tumor transplantation were utilized to test cell proliferation ability in vitro and in vivo. RESULTS We found that Smad2/3/4 complex could regulate tyrosine aminotransferase (TAT) expression, and this regulation could relate to LLPS. CHIP qPCR results showed that the key targeted DNA binding site of Smad2/3/4 complex in TAT promoter region is -1032 to -1182. In addition. CCK-8, colony formation, and nude mice tumor transplantation assays showed that Smad2/3/4 complex could repress cell proliferation through TAT. Flow cytometry assay results showed that Smad2/3/4 complex could increase the apoptosis of hepatoma cells. Western blot results showed that Smad2/3/4 complex would active caspase-9 through TAT, which uncovered the mechanism of Smad2/3/4 complex inducing hepatoma cell apoptosis. CONCLUSION This study proved that Smad2/3/4 complex could undergo LLPS to active TAT transcription, then active caspase-9 to induce hepatoma cell apoptosis in inhibiting HCC progress. The research further elucidate the relationship between TGF-β signaling pathway and HCC, which contributes to discover the mechanism of HCC development.
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Affiliation(s)
- Jiong Li
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Postdoctoral Station of Medical Aspects of Specific Environments, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wendi Wang
- College of Life Science, Liaoning University, Shenyang, China
| | - Sang Li
- Engineering and Technology Research Center for Xenotransplantation of Human Province, Changsha, China
| | - Zhengkang Qiao
- College of Life Science, Liaoning University, Shenyang, China
| | - Haoyue Jiang
- College of Life Science, Liaoning University, Shenyang, China
| | - Xinyue Chang
- College of Life Science, Liaoning University, Shenyang, China
| | - Yaning Zhu
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hongpei Tan
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaoqian Ma
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yuqian Dong
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhenhu He
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhen Wang
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qin Liu
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shanhu Yao
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Cejun Yang
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Min Yang
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lu Cao
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Juan Zhang
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wei Li
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Wei Wang
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhe Yang
- College of Life Science, Liaoning University, Shenyang, China.
- Shenyang Key Laboratory of Chronic Disease Occurrence and Nutrition Intervention, College of Life Sciences, Liaoning University, Shenyang, 110036, China.
| | - Pengfei Rong
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
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Wang L, Xing S, Chang X, Ma L, Wenda C. Cropland Microclimate And Leaf-Nesting Behavior Shape The Growth of Caterpillar Under Future Warming. Integr Comp Biol 2024:icae043. [PMID: 38755000 DOI: 10.1093/icb/icae043] [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: 05/18/2024] Open
Abstract
Predicting performance responses of insects to climate change is crucial for biodiversity conservation and pest management. While most projections on insects' performance under climate change have used macro-scale weather station data, few incorporated the microclimates within vegetation that insects inhabit and their feeding behaviors (e.g., leaf-nesting: building leaf nests or feeding inside). Here, taking advantage of relatively homogenous vegetation structures in agricultural fields, we built microclimate models to examine fine-scale air temperatures within two important crop systems (maize and rice) and compared microclimate air temperatures to temperatures from weather stations. We deployed physical models of caterpillars and quantified effects of leaf-nesting behavior on operative temperatures of two Lepidoptera pests: Ostrinia furnacalis (Pyralidae) and Cnaphalocrocis medinalis (Crambidae). We built temperature-growth rate curves and predicted the growth rate of caterpillars with and without leaf-nesting behavior based on downscaled microclimate changes under different climate change scenarios. We identified widespread differences between microclimates in our crop systems and air temperatures reported by local weather stations. Leaf-nesting individuals in general had much lower body temperatures compared to non-leaf-nesting individuals. When considering microclimates, we predicted leaf-nesting individuals grow slower compared to non-leaf nesting individuals with rising temperature. Our findings highlight the importance of considering microclimate and habitat-modifying behavior in predicting performance responses to climate change. Understanding the thermal biology of pests and other insects would allow us to make more accurate projections on crop yields and biodiversity responses to environmental changes.
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Affiliation(s)
- Ling Wang
- School of Ecology, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong 518107, China
| | - Shuang Xing
- School of Ecology, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong 518107, China
| | - Xinyue Chang
- School of Ecology, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong 518107, China
| | - Liang Ma
- School of Ecology, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong 518107, China
| | - Cheng Wenda
- School of Ecology, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong 518107, China
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Cui Y, Zhou Y, Gao Y, Ma X, Wang Y, Zhang X, Zhou T, Chen S, Lu L, Zhang Y, Chang X, Tong A, Li Y. Novel alternative tools for metastatic pheochromocytomas/paragangliomas prediction. J Endocrinol Invest 2024; 47:1191-1203. [PMID: 38206552 DOI: 10.1007/s40618-023-02239-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 11/02/2023] [Indexed: 01/12/2024]
Abstract
OBJECTIVE The existing prediction models for metastasis in pheochromocytomas/paragangliomas (PPGLs) showed high heterogeneity in different centers. Therefore, this study aimed to establish new prediction models integrating multiple variables based on different algorithms. DESIGN AND METHODS Data of patients with PPGLs undergoing surgical resection at the Peking Union Medical College Hospital from 2007 to 2022 were collected retrospectively. Patients were randomly divided into the training and testing sets in a ratio of 7:3. Subsequently, decision trees, random forest, and logistic models were constructed for metastasis prediction with the training set and Cox models for metastasis-free survival (MFS) prediction with the total population. Additionally, Ki-67 index and tumor size were transformed into categorical variables for adjusting models. The testing set was used to assess the discrimination and calibration of models and the optimal models were visualized as nomograms. Clinical characteristics and MFS were compared between patients with and without risk factors. RESULTS A total of 198 patients with 59 cases of metastasis were included and classified into the training set (n = 138) and testing set (n = 60). Among all models, the logistic regression model showed the best discrimination for metastasis prediction with an AUC of 0.891 (95% CI, 0.793-0.990), integrating SDHB germline mutations [OR: 96.72 (95% CI, 16.61-940.79)], S-100 (-) [OR: 11.22 (95% CI, 3.04-58.51)], ATRX (-) [OR: 8.42 (95% CI, 2.73-29.24)] and Ki-67 ≥ 3% [OR: 7.98 (95% CI, 2.27-32.24)] evaluated through immunohistochemistry (IHC), and tumor size ≥ 5 cm [OR: 4.59 (95% CI, 1.34-19.13)]. The multivariate Cox model including the above risk factors also showed a high C-index of 0.860 (95% CI, 0.810-0.911) in predicting MFS after surgery. Furthermore, patients with the above risk factors showed a significantly poorer MFS (P ≤ 0.001). CONCLUSIONS Models established in this study provided alternative and reliable tools for clinicians to predict PPGLs patients' metastasis and MFS. More importantly, this study revealed for the first time that IHC of ATRX could act as an independent predictor of metastasis in PPGLs.
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Affiliation(s)
- Y Cui
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - Y Zhou
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - Y Gao
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - X Ma
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - Y Wang
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - X Zhang
- Department of Urology Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - T Zhou
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - S Chen
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - L Lu
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - Y Zhang
- Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
| | - X Chang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China.
| | - A Tong
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China.
| | - Y Li
- Department of Endocrinology, Key Laboratory of Endocrinology, National Health Commission of the People's Republic of China, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, People's Republic of China
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Xu Q, Guo D, Shi M, Wang Y, Yang P, Jia Y, Sun L, Liu Y, Chang X, He Y, Hui L, Zhang Y, Zhu Z. Genetically Determined Plasma Hepatocyte Growth Factor Levels Are Associated With the Risk and Prognosis of Ischemic Stroke. Stroke 2024. [PMID: 38572663 DOI: 10.1161/strokeaha.123.045430] [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: 10/05/2023] [Accepted: 03/11/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND Observational studies suggest that hepatocyte growth factor (HGF) is associated with the risk and prognosis of ischemic stroke, but the causality of these associations remains unclear. Therefore, we conducted Mendelian randomization (MR) analyses to explore the associations of genetically determined plasma HGF levels with the risk and prognosis of ischemic stroke. METHODS A total of 13 single-nucleotide polymorphisms associated with plasma HGF were selected as genetic instruments based on the data from a genome-wide association study with 21 758 European participants. Summary data about the risk of ischemic stroke were obtained from the MEGASTROKE (Multiancestry Genome-Wide Association Study of Stroke) Consortium with 34 217 ischemic stroke cases and 406 111 controls of European ancestry, and summary data about the prognosis of ischemic stroke were obtained from the GISCOME study (Genetics of Ischaemic Stroke Functional Outcome) with 6165 European patients with ischemic stroke. We conducted an inverse-variance weighted Mendelian randomization analysis followed by a series of sensitivity analyses to evaluate the associations of genetically determined plasma HGF with the risk and prognosis of ischemic stroke. RESULTS The primary analyses showed that genetically determined high HGF was associated with an increased risk of ischemic stroke (odds ratio per SD increase, 1.11 [95% CI, 1.04-1.19]; P=1.10×10-3) and poor prognosis of ischemic stroke (odds ratio per SD increase, 2.43 [95% CI, 1.76-3.52]; P=6.35×10-8). In the secondary analysis, genetically determined plasma HGF was associated with a high risk of large atherosclerotic stroke (odds ratio per SD increase, 1.39 [95% CI, 1.18-1.63]; P=5.08×10-5) but not small vessel stroke and cardioembolic stroke. Mendelian randomization-Egger regression showed no directional pleiotropy for all associations, and the sensitivity analyses with different Mendelian randomization methods further confirmed these findings. CONCLUSIONS We found positive associations of genetically determined plasma HGF with the risk and prognosis of ischemic stroke, suggesting that HGF might be implicated in the occurrence and development of ischemic stroke.
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Affiliation(s)
- Qingyun Xu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Daoxia Guo
- School of Nursing, Suzhou Medical College of Soochow University, China. (D.G.)
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Yinan Wang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Pinni Yang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Yiming Jia
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Lulu Sun
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Yi Liu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Xinyue Chang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Yu He
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Li Hui
- Research Center of Biological Psychiatry, The Affiliated Guangji Hospital of Soochow University, Suzhou, China (L.H.)
| | - Yonghong Zhang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China. (Q.X., M.S., Y.W., P.Y., Y.J., L.S., Y.L., X.C., Y.H., Y.Z., Z.Z.)
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Liu J, Chang X, Cheng Y, Guo Z, Yan Q. Construction of novel Ag/AgI/Bi 4Ti 3O 12 plasmonic heterojunction: A study focusing on the performance and mechanism of photocatalytic removal of tetracycline. Chemosphere 2024; 352:141306. [PMID: 38286311 DOI: 10.1016/j.chemosphere.2024.141306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 01/31/2024]
Abstract
As a result of the insufficient absorption of visible light, the application of Bi4Ti3O12 in the field of photocatalysis is limited. Ag/AgI was uniformly modified on the surface of the nanoflower bulb of Bi4Ti3O12 by simple precipitation method and photodeposition. The fabricated Ag/AgI/Bi4Ti3O12 obtained an ultra-high tetracycline (TC) removal rate under visible light irradiation. And the synergetic effects caused by the surface plasmon resonance (SPR) effect of Ag, the photosensitivity of AgI and the p-n heterojunction are the key to improving the photocatalytic performance of materials. Besides, four plausible photodegradation pathways of TC were proposed and its intermediates were evaluated for toxicity, showing a significant decrease in toxicity after photoreaction.
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Affiliation(s)
- Jiayu Liu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Henan, 450001, China
| | - Xinyue Chang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Henan, 450001, China
| | - Yanan Cheng
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Henan, 450001, China
| | - Zhiyuan Guo
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Henan, 450001, China
| | - Qishe Yan
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Henan, 450001, China.
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Xu Q, Jia Y, Wang Y, Yang P, Sun L, Liu Y, Chang X, He Y, Guo D, Shi M, Zhang Y, Zhu Z. The bidirectional association between frailty index and cardiovascular disease: A Mendelian randomization study. Nutr Metab Cardiovasc Dis 2024; 34:624-632. [PMID: 38176958 DOI: 10.1016/j.numecd.2023.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 08/22/2023] [Accepted: 10/19/2023] [Indexed: 01/06/2024]
Abstract
BACKGROUND AND AIM Observational studies have suggested a relationship between frailty and cardiovascular disease (CVD), but the causality is still uncertain. We used bidirectional Mendelian randomization (MR) design to investigate the potential causal associations between frailty and four main CVDs, including hypertension, myocardial infarction (MI), heart failure (HF), and atrial fibrillation (AF). METHODS AND RESULTS Independent single-nucleotide polymorphisms for frailty index (FI) and CVDs (hypertension, MI, HF, and AF) were selected as genetic instruments based on European-descent genome-wide association studies (GWASs). Summary-level data for outcomes on FI (n = 175,226), hypertension (n = 463,010), MI (n = 171,875), HF (n = 977323), and AF (n = 1,030,836) was derived from five large-scale GWASs of European ancestry. We used the inverse-variance weighted (IVW) method to examine the bidirectional associations between FI and CVDs in the main analyses. In the IVW MR analyses, genetically determined high FI was significantly associated with increased risks of hypertension (odds ratio [OR] per 1-SD increase: 1.07 [95 % confidence interval, 1.05-1.08]), MI (OR per 1-SD increase: 1.74 [1.21-2.51]), HF (OR per 1-SD increase: 1.28 [1.10-1.48]), and AF (OR per 1-SD increase: 1.20 [1.08-1.33]). In addition, genetically determined hypertension (beta: 1.406 [1.225-1.587]), MI (beta: 0.045 [0.023-0.067]), HF (beta: 0.105 [0.066-0.143]) and AF (beta: 0.021 [0.012-0.031]) were significantly associated with high FI. These findings were robustly supported by a series of sensitivity analyses with different MR models. CONCLUSIONS We found potential bidirectional causal associations between elevated FI and increased risks of CVD, suggesting mutual risk factors between frailty and CVD.
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Affiliation(s)
- Qingyun Xu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yiming Jia
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yinan Wang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Pinni Yang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Lulu Sun
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yi Liu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Xinyue Chang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yu He
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Daoxia Guo
- School of Nursing, Medical College of Soochow University, Suzhou, China
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yonghong Zhang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China.
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Chang X, You J, Yang P, He Y, Liu Y, Shi M, Guo D, Peng Y, Chen J, Wang A, Xu T, He J, Zhang Y, Zhu Z. High-Serum Brain-Derived Neurotrophic Factor Levels Are Associated With Decreased Risk of Poststroke Cognitive Impairment. Stroke 2024; 55:643-650. [PMID: 38235585 DOI: 10.1161/strokeaha.123.044698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 01/03/2024] [Indexed: 01/19/2024]
Abstract
BACKGROUND BDNF (brain-derived neurotrophic factor) is widely implicated in the pathophysiological process of stroke, but the effect of BDNF on poststroke cognitive impairment (PSCI) remains unclear. We aimed to investigate the association between baseline serum BDNF and the risk of PSCI at 3 months in a multicenter study based on a preplanned ancillary study of the CATIS trial (China Antihypertensive Trial in Acute Ischemic Stroke). METHODS We examined serum BDNF levels at baseline and used the Mini-Mental State Examination and Montreal Cognitive Assessment to evaluate cognitive function at 3-month follow-up after ischemic stroke. PSCI was defined as Mini-Mental State Examination score <27 or Montreal Cognitive Assessment score <25. Logistic regression analyses were performed to evaluate the association between serum BDNF and the risk of 3-month PSCI. RESULTS In this ancillary study, a total of 660 patients with ischemic stroke with hypertension were included, and 593 patients (mean age, 59.90±10.44 years; 410 males and 183 females) were finally included in this analysis. According to mini-mental state examination score, after adjustment for age, sex, education, baseline National Institutes of Health Stroke Scale score, APOE ɛ4 carriers, and other potential confounders, the odds ratio of PSCI for the highest tertile of BDNF was 0.60 ([95% CI, 0.39-0.94]; P=0.024) compared with the lowest tertile. Multiple-adjusted spline regression model showed a linear association of serum BDNF levels with PSCI at 3 months (P value for linearity=0.010). Adding serum BDNF to conventional prognostic factors slightly improved the risk reclassification of PSCI (net reclassification improvement: 27.46%, P=0.001; integrated discrimination index: 1.02%, P=0.015). Similar significant findings were observed when PSCI was defined by the Montreal Cognitive Assessment score. CONCLUSIONS Elevated serum BDNF levels were associated with a decreased risk of PSCI at 3 months, suggesting that serum BDNF might be a potential predictive biomarker for PSCI among patients with ischemic stroke with hypertension.
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Affiliation(s)
- Xinyue Chang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Jiaxing You
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Pinni Yang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Yu He
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Yi Liu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (M.S., J.C., J.H., Z.Z.)
| | - Daoxia Guo
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Yanbo Peng
- Department of Neurology, Affiliated Hospital of North China University of Science and Technology, Hebei (Y.P.)
| | - Jing Chen
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (M.S., J.C., J.H., Z.Z.)
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA (J.C., J.H.)
| | - Aili Wang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Tan Xu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Jiang He
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (M.S., J.C., J.H., Z.Z.)
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA (J.C., J.H.)
| | - Yonghong Zhang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, China (X.C., J.Y., P.Y., Y.H., Y.L., M.S., D.G., A.W., T.X., Y.Z., Z.Z.)
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (M.S., J.C., J.H., Z.Z.)
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Liu Y, Jia Y, Sun H, Sun L, Wang Y, Xu Q, He Y, Chang X, Guo D, Shi M, Chen GC, Zheng J, Zhu Z. Genetic analyses identify brain imaging-derived phenotypes associated with the risk of intracerebral hemorrhage. Cereb Cortex 2024; 34:bhad518. [PMID: 38185989 DOI: 10.1093/cercor/bhad518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/08/2023] [Accepted: 12/09/2023] [Indexed: 01/09/2024] Open
Abstract
Previous observational studies have reported associations between brain imaging-derived phenotypes (IDPs) and intracerebral hemorrhage (ICH), but the causality between them remains uncertain. We aimed to investigate the potential causal relationship between IDPs and ICH by a two-sample Mendelian randomization (MR) study. We selected genetic instruments for 363 IDPs from a genome-wide association study (GWASs) based on the UK Biobank (n = 33,224). Summary-level data on ICH was derived from a European-descent GWAS with 1,545 cases and 1,481 controls. Inverse variance weighted MR method was applied in the main analysis to investigate the associations between IDPs and ICH. Reverse MR analyses were performed for significant IDPs to examine the reverse causation for the identified associations. Among the 363 IDPs, isotropic or free water volume fraction (ISOVF) in the anterior limb of the left internal capsule was identified to be associated with the risk of ICH (OR per 1-SD increase, 4.62 [95% CI, 2.18-9.81], P = 6.63 × 10-5). In addition, the reverse MR analysis indicated that ICH had no effect on ISOVF in the anterior limb of the left internal capsule (beta, 0.010 [95% CI, -0.010-0.030], P = 0.33). MR-Egger regression analysis showed no directional pleiotropy for the association between ISOVF and ICH, and sensitivity analyses with different MR models further confirmed these findings. ISOVF in the anterior limb of the left internal capsule might be a potential causal mediator of ICH, which may provide predictive guidance for the prevention of ICH. Further studies are warranted to replicate our findings and clarify the underlying mechanisms.
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Affiliation(s)
- Yi Liu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Yiming Jia
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Hongyan Sun
- Department of Medical Imaging, 11 Guangqian Road, Xiangcheng District, The Affiliated Guangji Hospital of Soochow University, Suzhou, China
| | - Lulu Sun
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Yinan Wang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Qingyun Xu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Yu He
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Xinyue Chang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Daoxia Guo
- School of Nursing, 333 Ganjiang East Road, Gusu District, Suzhou Medical College of Soochow University, Suzhou, China
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
| | - Guo-Chong Chen
- Department of Nutrition and Food Hygiene, School of Public Health, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, China
| | - Jin Zheng
- Department of Neurology, Minhang Hospital, 170 Xinsong Road, Xinzhuang Town, Minhang District, Fudan University, Shanghai, China
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, 199 Renai Road, Industrial Park District, Suzhou Medical College of Soochow University, Suzhou, Jiangsu 215123, China
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You J, Wang Y, Chang X, Liu Y, He Y, Zhou X, Zou J, Xiao M, Shi M, Guo D, Shen O, Zhu Z. Association between plasma brain-derived neurotrophic factor level and Alzheimer's disease: a Mendelian randomization study. Curr Neurovasc Res 2024; 21:CNR-EPUB-137902. [PMID: 38279765 DOI: 10.2174/0115672026281995231227070637] [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: 11/01/2023] [Revised: 01/01/1970] [Accepted: 11/20/2023] [Indexed: 01/28/2024]
Abstract
BACKGROUND High brain-derived neurotrophic factor (BDNF) concentrations have been found to be associated with a decreased risk of Alzheimer's disease (AD) in observational studies, but the causality for this association remains unclear. Therefore, we aimed to examine the association between genetically determined plasma BDNF levels and AD using a two-sample Mendelian randomization (MR) method. METHODS Twenty single-nucleotide polymorphisms associated with plasma BDNF concentrations were identified as genetic instruments based on a genome-wide association study with 3301 European individuals. Summary-level data on AD were obtained from the International Genomics of Alzheimer's Project, involving 21,982 AD cases and 41,944 controls of European ancestry. To evaluate the relationship between plasma BDNF concentrations and AD, we employed the inverse-variance weighted method along with a series of sensitivity analyses. RESULTS The inverse-variance weighted MR analysis showed that genetically determined BDNF concentrations were associated with a decreased risk of AD (odds ratio per SD increase, 0.91; 95% confidence interval, 0.86-0.96; p =0.001). The association between plasma BDNF concentrations and AD was further confirmed through sensitivity analyses using different MR methods, and MR-Egger regression suggested no directional pleiotropy for this association. CONCLUSION Genetically determined BDNF levels were associated with a decreased risk of AD, suggesting that BDNF was implicated in the development of AD and might be a promising target for the prevention of AD.
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Affiliation(s)
- Jiaxing You
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yinan Wang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Xinyue Chang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yi Liu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Yu He
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Xiya Zhou
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Jinyan Zou
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Meng Xiao
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Daoxia Guo
- School of Nursing, Suzhou Medical College of Soochow University, Suzhou, China
| | - Ouxi Shen
- Department of Occupational Health, Suzhou Industrial Park Center for Disease Control and Prevention, Suzhou, China
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
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11
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Wang Y, Shen O, Xu Q, Sun L, Jia Y, Liu Y, He Y, Chang X, Guo D, Shi M, Chen GC, Zheng J, Zhu Z. Genetic analyses identify brain imaging-derived phenotypes associated with the risk of amyotrophic lateral sclerosis. Cereb Cortex 2024; 34:bhad496. [PMID: 38112636 DOI: 10.1093/cercor/bhad496] [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: 09/08/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 12/21/2023] Open
Abstract
Brain imaging-derived phenotypes have been suggested to be associated with amyotrophic lateral sclerosis in observational studies, but whether these associations are causal remains unclear. We aimed to assess the potential bidirectional causal associations between imaging-derived phenotypes and amyotrophic lateral sclerosis using bidirectional 2-sample Mendelian randomization analyses. Summary statistics for 469 imaging-derived phenotypes (33,224 individuals) and amyotrophic lateral sclerosis (20,806 cases and 59,804 controls) were obtained from 2 large-scale genome-wide association studies of European ancestry. We used the inverse-variance weighted Mendelian randomization method in the main analysis to assess the bidirectional associations between imaging-derived phenotypes and amyotrophic lateral sclerosis, followed by several sensitivity analyses for robustness validation. In the forward Mendelian randomization analyses, we found that genetically determined high orientation dispersion index in the right cerebral peduncle was associated with the increased risk of amyotrophic lateral sclerosis (odds ratio = 1.30, 95% confidence interval = 1.16-1.45, P = 2.26 × 10-6). In addition, the reverse Mendelian randomization analysis indicated that amyotrophic lateral sclerosis had no effect on 469 imaging-derived phenotypes. Mendelian randomization-Egger regression analysis showed no directional pleiotropy for the association between high orientation dispersion index in the right cerebral peduncle and amyotrophic lateral sclerosis, and sensitivity analyses with different Mendelian randomization models further confirmed these findings. The present systematic bidirectional Mendelian randomization analysis showed that high orientation dispersion index in the right cerebral peduncle might be the potential causal mediator of amyotrophic lateral sclerosis, which may provide predictive guidance for the prevention of amyotrophic lateral sclerosis. Further studies are warranted to replicate our findings and clarify the underlying mechanisms.
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Affiliation(s)
- Yinan Wang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Ouxi Shen
- Department of Occupational Health, Suzhou Industrial Park Center for Disease Control and Prevention, 200 Suhongxi Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Qingyun Xu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Lulu Sun
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Yiming Jia
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Yi Liu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Yu He
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Xinyue Chang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Daoxia Guo
- Department of Epidemiology, School of Nursing, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Guo-Chong Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
| | - Jin Zheng
- Department of Neurology, Minhang Hospital, Fudan University, 170 Xinsong Road, Minhang District, Shanghai 200433, China
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, 199 Renai Road, Industrial Park District, Suzhou, Jiangsu Province 215123, China
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Zhang L, Yang F, Ma J, Hu Y, Li M, Wang C, Chang X, Yang L. The Impact of Testosterone on Alzheimer's Disease Are Mediated by Lipid Metabolism and Obesity: A Mendelian Randomization Study. J Prev Alzheimers Dis 2024; 11:507-513. [PMID: 38374757 DOI: 10.14283/jpad.2023.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
BACKGROUND To investigate the causal relationship between testosterone (BT) levels and Alzheimer's disease (AD) risk and to quantify the role of obesity and lipid metabolism as potential mediators. METHODS We used a two-sample, two-step MR to determine:1) the causal effect of BT levels on AD; 2) the causal effect of two lipid metabolites, obesity and LDLc on AD; and 3) the mediating effects of these metabolites. Pooled data for BT levels and lipid metabolism were obtained from the UK Biobank. AD data were obtained from the Alzheimer's Disease Project International Genomics Consortium, FinnGen Consortium, and UK Biobank study. Effect estimates from external genome-wide association study (GWAS) pooled statistics were obtained using inverse variance-weighted (IVW) MR analysis. RESULTS Higher levels of BT were associated with a reduced risk of AD (odds ratio [OR] 0.9992, 95% CI 0.9985-0.9998, P = 0.019), and there was a negative correlation with LDLc (OR 0.9208, 95% CI 0.8569-0.9895, P = 0.024) and obesity class 2 (OC2) (OR 0.7445, 95% CI 0.5873-0.9437, P = 0.014). Conversely, there was a positive correlation between LDLc (OR 1.0014, 95% CI 1.0000-1.0029, P = 0.043) and OC2 (OR 1.0005, 95% CI 1.0001-1.0009, P = 0.003) and AD. Mediation analysis showed that the indirect effect of BT levels on AD was achieved through LDLc and OC2, which accounted for 17% and 17% of the total effect, respectively. CONCLUSION Our study identified a causal role of BT levels in LDLc and OC2. BT levels may affect AD through LDLc and OC2 metabolic processes.
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Affiliation(s)
- L Zhang
- Lin Yang, Xi'an Hospital of Traditional Chinese Medicine, Shaanxi, China,
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Feng X, Zhang L, Hou Y, Ma W, Ma J, Chang X, Yang L. Mendelian Randomization Analysis Reveals Causal Factors behind Alzheimer's Disease Risk: Evidence, Opportunities, and Challenges. J Prev Alzheimers Dis 2024; 11:749-758. [PMID: 38706291 DOI: 10.14283/jpad.2024.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
Alzheimer's disease and its comorbidities pose a heavy disease burden globally, and its treatment remains a major challenge. Identifying the protective and risk factors for Alzheimer's disease, as well as its possible underlying molecular processes, can facilitate the development of interventions that can slow its progression. Observational studies and randomized controlled trials have provided some evidence regarding potential risk factors for Alzheimer's disease; however, the results of these studies vary. Mendelian randomization is a novel epidemiological methodology primarily used to infer causal relationships between exposures and outcomes. Many Mendelian randomization studies have identified potential causal relationships between Alzheimer's disease and certain diseases, lifestyle habits, and biological exposures, thus providing valuable data for further mechanistic studies and the development and implementation of clinical prevention strategies. However, the results and data from Mendelian randomization studies must be interpreted based on comprehensive evidence. Moreover, the existing Mendelian randomization studies on the epidemiology of Alzheimer's disease have some limitations that are worth exploring. Therefore, the aim of this review was to summarize the available evidence on the potential protective and risk factors for Alzheimer's disease by assessing published Mendelian randomization studies on Alzheimer's disease, and to provide new perspectives on the etiology of Alzheimer's disease.
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Affiliation(s)
- X Feng
- Lin Yang, Xian Hospital of Traditional Chinese Medicine, Xi'an, China,
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Chang X, Li Y, Li Y. Asynchronous and error-prone longitudinal data analysis via functional calibration. Biometrics 2023; 79:3374-3387. [PMID: 37042741 PMCID: PMC10567993 DOI: 10.1111/biom.13866] [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: 10/09/2022] [Accepted: 03/22/2023] [Indexed: 04/13/2023]
Abstract
In many longitudinal settings, time-varying covariates may not be measured at the same time as responses and are often prone to measurement error. Naive last-observation-carried-forward methods incur estimation biases, and existing kernel-based methods suffer from slow convergence rates and large variations. To address these challenges, we propose a new functional calibration approach to efficiently learn longitudinal covariate processes based on sparse functional data with measurement error. Our approach, stemming from functional principal component analysis, calibrates the unobserved synchronized covariate values from the observed asynchronous and error-prone covariate values, and is broadly applicable to asynchronous longitudinal regression with time-invariant or time-varying coefficients. For regression with time-invariant coefficients, our estimator is asymptotically unbiased, root-n consistent, and asymptotically normal; for time-varying coefficient models, our estimator has the optimal varying coefficient model convergence rate with inflated asymptotic variance from the calibration. In both cases, our estimators present asymptotic properties superior to the existing methods. The feasibility and usability of the proposed methods are verified by simulations and an application to the Study of Women's Health Across the Nation, a large-scale multisite longitudinal study on women's health during midlife.
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Affiliation(s)
- Xinyue Chang
- Department of Statistics, Iowa State University, Ames, IA 50011, U.S.A
| | - Yehua Li
- Department of Statistics, University of California, Riverside, CA 92521, U.S.A
| | - Yi Li
- Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109, U.S.A
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15
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Chang X, Liu SJ, Han L. Causal association between aspirin use and risk of endometrioid carcinoma: a Mendelian randomization study. Eur Rev Med Pharmacol Sci 2023; 27:11597-11605. [PMID: 38095407 DOI: 10.26355/eurrev_202312_34598] [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: 12/18/2023]
Abstract
OBJECTIVE The aim of the study was to investigate the causal relationship between aspirin use and the risk of endometrial endometrioid cancer (EEC) using two-sample Mendelian randomization (TSMR) and multivariable Mendelian randomization (MVMR) study. MATERIALS AND METHODS A TSMR analysis was conducted to estimate the potential causal relationship between aspirin use and the risk of EEC using genome-wide data from Genome-wide association study (GWAS). The causal association between aspirin use and EEC was further analyzed by MVMR analysis after adjusting for various factors such as obesity, hypertension, diabetes, and infertility. The single nucleotide polymorphism (SNP) data associated with aspirin use and EEC was obtained from the GWAS catalog database. RESULTS A total of six SNPs were included as instrumental variables in TSMR, which showed that taking aspirin reduced the risk of EEC [OR = 0.02, 95% CI = 0-0.28, p = 0.005, inverse variance weighted (IVW) method]. Besides, the results of the weighted median (WME) method, weighted mode, and simple mode were consistent with the results shown by the IVW method. After further using the MVMR method, the causal association of aspirin use and prevention of EEC onset remained significant after adjusting for the effects of obesity, hypertension, and diabetes (OR = 0.076, 95% CI = 0.007-0.793, p = 0.031). Sensitivity analyses, including heterogeneity, horizontal multiplicity, and leave-one-out tests, showed the reliability of the instrumental variables, proving that the results were reliable and not significantly biased. CONCLUSIONS Taking aspirin can reduce the risk of EEC morbidity, and it is expected to be of great significance for the early prevention and treatment of endometrial cancer by exploring the biological mechanism of aspirin on endometrioid cancer at a deeper level.
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Affiliation(s)
- X Chang
- Department of Gynecology, Dalian Women and Children's Medical Group, Dalian, Liaoning, China.
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Xu A, Zhu X, Song T, Zhang Z, Fei F, Zhu Q, Chang X, Liu H, Chen F, Xu F, Li L, Liu X. Molecular characterization of a novel mitochondrial NOD-like receptor X1 in chicken that negatively regulates IFN-β expression via STING. Poult Sci 2023; 102:103077. [PMID: 37741116 PMCID: PMC10520534 DOI: 10.1016/j.psj.2023.103077] [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: 06/06/2023] [Revised: 08/22/2023] [Accepted: 08/25/2023] [Indexed: 09/25/2023] Open
Abstract
NOD-like receptor X1 (NLRX1) is known for its unique mitochondrial localization and plays a negative role in innate immunity. The initial characterization and function of chicken NLRX1 remain unclear. Here, chicken mitochondrial-targeted NLRX1 (chNLRX1) protein was identified. It had relatively conserved domains, a unique N-terminal "X" mitochondrial-targeting domain (MT) and 2 highly conserved motifs at positions 510-520 and 412-421. Furthermore, chNLRX1 had a unique 53aa N-terminus-MT consistent with its localization to mitochondria. Additionally, chNLRX1 was observed to reduce the DNA sensing adaptor stimulator of interferon genes (STING)-induced IFN-β by attenuating the STING-TANK-binding kinase 1 (TBK1) interaction, which is a requisite for the STING-TBK1-IFN-β signaling pathway. These results suggested that chNLRX1 negatively regulated type-I interferon production via STING in host innate immunity.
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Affiliation(s)
- Aiyun Xu
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; International Immunology Center, Anhui Agricultural University, Hefei 230036, China
| | - Xiang Zhu
- Agricultural Comprehensive Administrative Law Enforcement Brigade, Mingguang 239400, China
| | - Tao Song
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; International Immunology Center, Anhui Agricultural University, Hefei 230036, China
| | - Zhenyuan Zhang
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; International Immunology Center, Anhui Agricultural University, Hefei 230036, China
| | - Fei Fei
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; International Immunology Center, Anhui Agricultural University, Hefei 230036, China
| | - Qingxiao Zhu
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; International Immunology Center, Anhui Agricultural University, Hefei 230036, China
| | - Xinyue Chang
- International Immunology Center, Anhui Agricultural University, Hefei 230036, China
| | - Hongmei Liu
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Fangfang Chen
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Fazhi Xu
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Lin Li
- Animal-derived Food Safety Innovation Team, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Xuelan Liu
- Anhui Province Key Lab of Veterinary Pathobiology and Disease Control, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China; International Immunology Center, Anhui Agricultural University, Hefei 230036, China.
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Jia Y, Sun H, Sun L, Wang Y, Xu Q, Liu Y, Chang X, He Y, Guo D, Shi M, Chen GC, Zheng J, Zhang Y, Zhu Z. Mendelian randomization analysis implicates bidirectional associations between brain imaging-derived phenotypes and ischemic stroke. Cereb Cortex 2023; 33:10848-10857. [PMID: 37697910 DOI: 10.1093/cercor/bhad329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/13/2023] Open
Abstract
Brian imaging-derived phenotypes (IDPs) have been suggested to be associated with ischemic stroke, but the causality between them remains unclear. In this bidirectional two-sample Mendelian randomization (MR) study, we explored the potential causal relationship between 461 imaging-derived phenotypes (n = 33,224, UK Biobank) and ischemic stroke (n = 34,217 cases/406,111 controls, Multiancestry Genome-Wide Association Study of Stroke). Forward MR analyses identified five IDPs associated with ischemic stroke, including mean diffusivity (MD) in the right superior fronto-occipital fasciculus (1.22 [95% CI, 1.11-1.34]), MD in the left superior fronto-occipital fasciculus (1.30 [1.17-1.44]), MD in the anterior limb of the right internal capsule (1.36 [1.22-1.51]), MD in the right anterior thalamic radiation (1.17 [1.09-1.26]), and MD in the right superior thalamic radiation (1.23 [1.11-1.35]). In the reverse MR analyses, ischemic stroke was identified to be associated with three IDPs, including high isotropic or free water volume fraction in the body of corpus callosum (beta, 0.189 [95% confidence interval, 0.107-0.271]), orientation dispersion index in the pontine crossing tract (0.175 [0.093-0.257]), and volume of the third ventricle (0.219 [0.138-0.301]). This bidirectional two-sample MR study suggested five predictors and three diagnostic markers for ischemic stroke at the brain-imaging level. Further studies are warranted to replicate our findings and clarify underlying mechanisms.
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Affiliation(s)
- Yiming Jia
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Hongyan Sun
- Department of Medical Imaging, The Affiliated Guangji Hospital of Soochow University, Suzhou 215137, China
| | - Lulu Sun
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Yinan Wang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Qingyun Xu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Yi Liu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Xinyue Chang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Yu He
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Daoxia Guo
- School of Nursing, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Guo-Chong Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Jin Zheng
- Department of Neurology, Minhang Hospital, Fudan University, Shanghai 200433, China
| | - Yonghong Zhang
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Ministry of Education (MOE) Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou 215123, China
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Xue Y, Yang X, Zhang H, Zhang T, Chen W, Chang X, Wang Y. [Protective effect of recombinant Schistosoma japonicum cystatin against acute kidney injury associated with acute liver failure in mice]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2023; 35:331-339. [PMID: 37926467 DOI: 10.16250/j.32.1374.2023067] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
OBJECTIVE To evaluate the protective effect of recombinant Schistosoma japonicum cystatin (rSj-Cys) against acute kidney injury induced by acute liver failure and unravel the underlying mechanism, so as to provide insights into the clinical therapy of acute kidney injury. METHODS Twenty-four male C57BL/6J mice at ages of 6 to 8 weeks were randomly divided into the normal control group, rSj-Cys control group, lipopolysaccharide (LPS)/D-galactosamine (D-GaIN) model group and LPS/D-GaIN + rSj-Cys treatment group, of 6 mice each group. Mice in the LPS/D-GaIN group and LPS/D-GaIN + rSj-Cys group were intraperitoneally injected with LPS (10 μg/kg) and D-GaIN (700 mg/kg), and mice in the LPS/D-GaIN + rSj-Cys group were additionally administered with rSj-Cys (1.25 mg/kg) by intraperitoneal injection 30 min post-modeling, while mice in the rSj-Cys group were intraperitoneally injected with rSj-Cys (1.25 mg/kg), and mice in the normal control group were injected with the normal volume of PBS. All mice were sacrificed 6 h post-modeling, and mouse serum and kidney samples were collected. Serum creatinine (Cr) and urea nitrogen (BUN) levels were measured, and the pathological changes of mouse kidney specimens were examined using hematoxylin-eosin (HE) staining. Serum tumor necrosis factor (TNF)-α and interleukin (IL)-6 levels were detected using enzyme-linked immunosorbent assay (ELISA), and the expression of inflammatory factors and pyroptosis-related proteins was quantified in mouse kidney specimens using immunohistochemistry. In addition, the expression of pyroptosis-related proteins and nuclear factor-kappa B (NF-κB) signaling pathway-associated proteins was determined in mouse kidney specimens using Western blotting assay. RESULTS HE staining showed no remarkable abnormality in the mouse kidney structure in the normal control group and the rSj-Cys control group, and renal tubular injury was found in LPS/D-GaIN group, while the renal tubular injury was alleviated in LPS/D-GaIN+rSj-Cys treatment group. There were significant differences in serum levels of Cr (F = 46.33, P < 0.001), BUN (F = 128.60, P < 0.001), TNF-α (F = 102.00, P < 0.001) and IL-6 (F = 202.10, P < 0.001) among the four groups, and lower serum Cr [(85.35 ± 32.05) μmol/L], BUN [(11.90 ± 2.76) mmol/L], TNF-α [(158.27 ± 15.83) pg/mL] and IL-6 levels [(56.72 ± 4.37) pg/mL] were detected in the in LPS/D-GaIN + rSj-Cys group than in the LPS/D-GaIN group (all P values < 0.01). Immunohistochemical staining detected significant differences in TNF-α (F = 24.16, P < 0.001) and IL-10 (F = 15.07, P < 0.01) expression among the four groups, and lower TNF-α [(106.50 ± 16.57)%] and higher IL-10 expression [(91.83 ± 5.23)%] was detected in the LPS/D-GaIN + rSj-Cys group than in the LPS/D-GaIN group (both P values < 0.01). Western blotting and immunohistochemistry detected significant differences in the protein expression of pyroptosis-related proteins NOD-like receptor thermal protein domain associated protein 3 (NLRP3) (F = 24.57 and 30.72, both P values < 0.001), IL-1β (F = 19.24 and 22.59, both P values < 0.001) and IL-18 (F = 16.60 and 19.30, both P values < 0.001) in kidney samples among the four groups, and lower NLRP3, IL-1β and IL-18 expression was quantified in the LPS/D-GaIN + rSj-Cys treatment group than in the LPS/D-GaIN group (P values < 0.05). In addition, there were significant differences in the protein expression of NF-κB signaling pathway-associated proteins p-NF-κB p-P65/NF-κB p65 (F = 71.88, P < 0.001), Toll-like receptor (TLR)-4 (F = 45.49, P < 0.001) and p-IκB/IκB (F = 60.87, P < 0.001) in mouse kidney samples among the four groups, and lower expression of three NF-κB signaling pathway-associated proteins was determined in the LPS/D-GaIN + rSj-Cys treatment group than in the LPS/D-GaIN group (all P values < 0.01). CONCLUSIONS rSj-Cys may present a protective effect against acute kidney injury caused by acute liver failure through inhibiting inflammation and pyroptosis and downregulating the NF-κB signaling pathway.
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Affiliation(s)
- Y Xue
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, Shanxi 030600, China
| | - X Yang
- Department of Microbiology and Parasitology, Bengbu Medical College, Anhui Provincial Key Laboratory of Infection and Immunology, China
| | - H Zhang
- Department of Pathology and Physiology, Shanxi Medical University, China
| | - T Zhang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, Shanxi 030600, China
| | - W Chen
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, Shanxi 030600, China
| | - X Chang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, Shanxi 030600, China
| | - Y Wang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, Shanxi 030600, China
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Truzzi F, Dilloo S, Chang X, Whittaker A, D'Amen E, Dinelli G. Basic Three-Dimensional (3D) Intestinal Model System with an Immune Component. J Vis Exp 2023. [PMID: 37677028 DOI: 10.3791/65484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023] Open
Abstract
There has been an increase in the use of in vivo and in vitro intestinal models to study the pathophysiology of inflammatory intestinal diseases, for the pharmacological screening of potentially beneficial substances, and for toxicity studies on potentially harmful food components. Of relevance, there is a current demand for the development of cell-based in vitro models to substitute animal models. Here, a protocol for a basic, "healthy tissue" three-dimensional (3D) intestinal equivalent model using cell lines is presented with the dual benefit of providing both experimental simplicity (standardized and easily repeatable system) and physiological complexity (Caco-2 enterocytes with a supporting immune component of U937 monocytes and L929 fibroblasts). The protocol also includes paraffin embedding for light microscopic evaluation of fixed intestinal equivalents, thereby providing the advantage of analyzing multiple visual parameters from a single experiment. Hematoxylin and eosin (H&E) stained sections showing the Caco-2 columnar cells forming a tight and regular monolayer in control treatments are used to verify the efficacy of the model as an experimental system. Using gluten as a pro-inflammatory food component, parameters analyzed from sections include reduced monolayer thickness, as well as disruption and detachment from the underlying matrix (H&E), decreased tight junction protein expression as shown from occludin staining (quantifiable statistically), and immune-activation of migrating U937 cells as evidenced from the cluster of differentiation 14 (CD14) staining and CD11b-related differentiation into macrophages. As shown by using lipopolysaccharide to simulate intestinal inflammation, additional parameters that can be measured are increased mucus staining and cytokine expression (such as midkine) that can be extracted from the medium prior to fixation. The basic three-dimensional (3D) intestinal mucosa model and fixed sections can be recommended for inflammatory status and barrier integrity studies with the possibility of analyzing multiple visual quantifiable parameters.
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Affiliation(s)
- Francesca Truzzi
- Department of Agricultural and Food Sciences, Alma Mater Studiorum-University of Bologna;
| | - Silvia Dilloo
- Department of Agricultural and Food Sciences, Alma Mater Studiorum-University of Bologna
| | - Xinyue Chang
- Department of Agricultural and Food Sciences, Alma Mater Studiorum-University of Bologna
| | - Anne Whittaker
- Department of Agricultural and Food Sciences, Alma Mater Studiorum-University of Bologna
| | - Eros D'Amen
- Department of Agricultural and Food Sciences, Alma Mater Studiorum-University of Bologna
| | - Giovanni Dinelli
- Department of Agricultural and Food Sciences, Alma Mater Studiorum-University of Bologna
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Zhang Z, Dong X, Chen J, Liu Z, Gao Z, Chang X, Du Y, Jia C, Fu H, Luo F, Wu J. Transferred Polymer-Encapsulated Metal Electrodes for Electrical Transport Measurements on Ultrathin Air-Sensitive Crystals. Small Methods 2023; 7:e2300177. [PMID: 37287373 DOI: 10.1002/smtd.202300177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 05/29/2023] [Indexed: 06/09/2023]
Abstract
Owing to rapid property degradation after ambient exposure and incompatibility with conventional device fabrication process, electrical transport measurements on air-sensitive 2D materials have always been a big issue. Here, for the first time, a facile one-step polymer-encapsulated electrode transfer (PEET) method applicable for fragile 2D materials is developed, which showed great advantages of damage-free electrodes patterning and in situ polymer encapsulation preventing from H2 O/O2 exposure during the whole electrical measurements process. The ultrathin SmTe2 metals grown by chemical vapor deposition (CVD) are chosen as the prototypical air-sensitive 2D crystals for their poor air-stability, which will become highly insulating when fabricated by conventional lithographic techniques. Nevertheless, the intrinsic electrical properties of CVD-grown SmTe2 nanosheets can be readily investigated by the PEET method instead, showing ultralow contact resistance and high signal/noise ratio. The PEET method can be applicable to other fragile ultrathin magnetic materials, such as (Mn,Cr)Te, to investigate their intrinsic electrical/magnetic properties.
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Affiliation(s)
- Zheshan Zhang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensor Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Xinyue Dong
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensor Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Jiabiao Chen
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensor Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Zhaochao Liu
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensor Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Zhansheng Gao
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensor Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Xinyue Chang
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300350, China
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensor Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Chuancheng Jia
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300350, China
| | - Huixia Fu
- Center of Quantum Materials and Devices & College of Physics, Chongqing University, Chongqing, 401331, China
| | - Feng Luo
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensor Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Jinxiong Wu
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Smart Sensor Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
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21
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Wang Y, Jia Y, Xu Q, Yang P, Sun L, Liu Y, Chang X, He Y, Shi M, Guo D, Zhang Y, Zhu Z. Association Between Prekallikrein and Stroke: A Mendelian Randomization Study. J Am Heart Assoc 2023; 12:e030525. [PMID: 37581399 PMCID: PMC10492928 DOI: 10.1161/jaha.123.030525] [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: 04/10/2023] [Accepted: 07/18/2023] [Indexed: 08/16/2023]
Abstract
Background High plasma prekallikrein was reported to be associated with increased risks of stroke, but the causality for these associations remains unclear. We aimed to investigate the associations of genetically predicted plasma prekallikrein concentrations with all-cause stroke, ischemic stroke, 3 ischemic stroke subtypes, and intracerebral hemorrhage (ICH) using a 2-sample Mendelian randomization approach. Methods and Results Seven independent prekallikrein-related single-nucleotide polymorphisms were identified as genetic instruments for prekallikrein based on a genome-wide association study with 1000 European individuals. The summary statistics for all-cause stroke, ischemic stroke, and ischemic stroke subtypes were obtained from the Multiancestry Genome-wide Association Study of Stroke Consortium with 40 585 cases and 406 111 controls of European ancestry. The summary statistics for ICH were obtained from the ISGC (International Stroke Genetics Consortium) with 1545 ICH cases and 1481 controls of European ancestry. In the main analysis, the inverse-variance weighted method was applied to estimate the associations of plasma prekallikrein concentrations with all-cause stroke, ischemic stroke, ischemic stroke subtypes, and ICH. Genetically predicted high plasma prekallikrein levels were significantly associated with elevated risks of all-cause stroke (odds ratio [OR] per SD increase, 1.04 [95% CI, 1.02-1.06]; P=5.44×10-5), ischemic stroke (OR per SD increase, 1.05 [95% CI, 1.03-1.07]; P=1.42×10-5), cardioembolic stroke (OR per SD increase, 1.08 [95% CI, 1.03-1.12]; P=3.75×10-4), and small vessel stroke (OR per SD increase, 1.11 [95% CI, 1.06-1.17]; P=3.02×10-5). However, no significant associations were observed for genetically predicted prekallikrein concentrations with large artery stroke and ICH. Conclusions This Mendelian randomization study found that genetically predicted high plasma prekallikrein concentrations were associated with increased risks of all-cause stroke, ischemic stroke, cardioembolic stroke, and small vessel stroke, indicating that prekallikrein might have a critical role in the development of stroke.
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Affiliation(s)
- Yinan Wang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Yiming Jia
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Qingyun Xu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Pinni Yang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Lulu Sun
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Yi Liu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Xinyue Chang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Yu He
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Mengyao Shi
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Daoxia Guo
- School of NursingSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Yonghong Zhang
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health and Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric DiseasesSuzhou Medical College of Soochow UniversitySuzhouChina
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22
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Zheng Q, Wang W, Zhou Y, Mo J, Chang X, Zha Z, Zha L. Synthetic nanoparticles for the delivery of CRISPR/Cas9 gene editing system: classification and biomedical applications. Biomater Sci 2023; 11:5361-5389. [PMID: 37381725 DOI: 10.1039/d3bm00788j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
Gene editing has great potential in biomedical research including disease diagnosis and treatment. Clustered regularly interspaced short palindromic repeats (CRISPR) is the most straightforward and cost-effective method. The efficient and precise delivery of CRISPR can impact the specificity and efficacy of gene editing. In recent years, synthetic nanoparticles have been discovered as effective CRISPR/Cas9 delivery vehicles. We categorized synthetic nanoparticles for CRISPR/Cas9 delivery and discribed their advantages and disadvantages. Further, the building blocks of different kinds of nanoparticles and their applications in cells/tissues, cancer and other diseases were described in detail. Finally, the challenges encountered in the clinical application of CRISPR/Cas9 delivery materials were discussed, and potential solutions were provided regarding efficiency and biosafety issues.
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Affiliation(s)
- Qi Zheng
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, P. R. China.
| | - Weitao Wang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China.
| | - Yuhang Zhou
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, P. R. China.
| | - Jiayin Mo
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, P. R. China.
| | - Xinyue Chang
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, P. R. China.
| | - Zhengbao Zha
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China.
| | - Lisha Zha
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, P. R. China.
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23
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Chang X, Yu L, Li G, Li X, Bao L. Wetland vegetation cover changes and its response to climate changes across Heilongjiang-Amur River Basin. Front Plant Sci 2023; 14:1169898. [PMID: 37600201 PMCID: PMC10437219 DOI: 10.3389/fpls.2023.1169898] [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: 02/20/2023] [Accepted: 04/17/2023] [Indexed: 08/22/2023]
Abstract
The Heilongjiang-Amur River Basin is one of the largest and most complex aquatic systems in Asia, comprising diverse wetland resources. The wetland vegetation in mid-high latitude areas has high natural value and is sensitive to climate changes. In this study, we investigated the wetland vegetation cover changes and associated responses to climate change in the Heilongjiang-Amur River Basin from 2000 to 2018 based on the growing season (May to September) climate and LAI data. Our results indicated that the wetland LAI increased at 0.014 m2·m-2/yr across Heilongjiang-Amur River Basin with the regional climate showed wetting and warming trends. On a regional scale, wetland vegetation in China and Russia had positive partial correlation with solar radiation and minimum air temperature, with precipitation showing a slight lag effect. In contrast, wetland vegetation in Mongolia had positive partial correlation with precipitation. These correlations were further investigated at different climate intervals. We found the precipitation is positively correlated with LAI in the warm regions while is negatively correlated with LAI in the wet regions, indicating an increase in precipitation is beneficial for the growth of wetland vegetation in heat sufficient areas, and when precipitation exceeds a certain threshold, it will hinder the growth of wetland vegetation. In the cold regions, we found solar radiation and minimum air temperature are positively correlated with LAI, suggesting SR and minimum air temperature instead of mean air temperature and maximum air temperature play more important roles in affecting the wetland vegetation growth in the heat limited areas. The LAI was found to be negatively correlated with maximum air temperature in the arid areas, indicating excessive temperature would inhibit the wetland vegetation growth when the water is limited. Our investigation can provide a scientific foundation for the trilateral region in wetland ecosystem protection and is beneficial for a more comprehensive understanding of the responses of wetlands in the middle and high latitudes to climate change.
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Affiliation(s)
- Xinyue Chang
- Remote Sensing and Geographic Information Research Centre, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lingxue Yu
- Remote Sensing and Geographic Information Research Centre, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Guangshuai Li
- Remote Sensing and Geographic Information Research Centre, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
- College of Geography Science, Changchun Normal University, Changchun, China
| | - Xuan Li
- Remote Sensing and Geographic Information Research Centre, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
- School of Geomatics and Prospecting Engineering, Jilin Jianzhu University, Changchun, China
| | - Lun Bao
- Remote Sensing and Geographic Information Research Centre, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
- University of Chinese Academy of Sciences, Beijing, China
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24
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Yan D, Sun Z, Fang J, Cao S, Wang W, Chang X, Badirli S, Fu H, Liu Y. scRAA: the development of a robust and automatic annotation procedure for single-cell RNA sequencing data. J Biopharm Stat 2023:1-14. [PMID: 37162278 DOI: 10.1080/10543406.2023.2208671] [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] [Indexed: 05/11/2023]
Abstract
A critical task in single-cell RNA sequencing (scRNA-Seq) data analysis is to identify cell types from heterogeneous tissues. While the majority of classification methods demonstrated high performance in scRNA-Seq annotation problems, a robust and accurate solution is desired to generate reliable outcomes for downstream analyses, for instance, marker genes identification, differentially expressed genes, and pathway analysis. It is hard to establish a universally good metric. Thus, a universally good classification method for all kinds of scenarios does not exist. In addition, reference and query data in cell classification are usually from different experimental batches, and failure to consider batch effects may result in misleading conclusions. To overcome this bottleneck, we propose a robust ensemble approach to classify cells and utilize a batch correction method between reference and query data. We simulated four scenarios that comprise simple to complex batch effect and account for varying cell-type proportions. We further tested our approach on both lung and pancreas data. We found improved prediction accuracy and robust performance across simulation scenarios and real data. The incorporation of batch effect correction between reference and query, and the ensemble approach improve cell-type prediction accuracy while maintaining robustness. We demonstrated these through simulated and real scRNA-Seq data.
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Affiliation(s)
- Dongyan Yan
- Global Statistical Science, Eli Lilly & Co, Indianapolis, Indiana, USA
| | - Zhe Sun
- Global Statistical Science, Eli Lilly & Co, Indianapolis, Indiana, USA
| | - Jiyuan Fang
- Global Statistical Science, Eli Lilly & Co, Indianapolis, Indiana, USA
| | - Shanshan Cao
- Global Statistical Science, Eli Lilly & Co, Indianapolis, Indiana, USA
| | - Wenjie Wang
- Advance Analytics and Data Science, Eli Lilly & Co, Indianapolis, Indiana, USA
| | - Xinyue Chang
- Advance Analytics and Data Science, Eli Lilly & Co, Indianapolis, Indiana, USA
| | - Sarkhan Badirli
- Advance Analytics and Data Science, Eli Lilly & Co, Indianapolis, Indiana, USA
| | - Haoda Fu
- Advance Analytics and Data Science, Eli Lilly & Co, Indianapolis, Indiana, USA
| | - Yushi Liu
- Global Statistical Science, Eli Lilly & Co, Indianapolis, Indiana, USA
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25
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Xia X, Fan M, Liu Y, Chang X, Wang J, Qian J, Yang Y. Genome-wide alternative polyadenylation dynamics underlying plant growth retardant-induced dwarfing of pomegranate. Front Plant Sci 2023; 14:1189456. [PMID: 37223801 PMCID: PMC10200943 DOI: 10.3389/fpls.2023.1189456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 04/17/2023] [Indexed: 05/25/2023]
Abstract
Dwarfed stature is a desired agronomic trait for pomegranate (Punica granatum L.), with its advantages such as lower cost and increased yield. A comprehensive understanding of regulatory mechanisms underlying the growth repression would provide a genetic foundation to molecular-assisted dwarfing cultivation of pomegranate. Our previous study induced dwarfed pomegranate seedlings via exogenous application of plant growth retardants (PGRs) and highlighted the important roles of differential expression of plant growth-related genes in eliciting the dwarfed phenotype of pomegranate. Alternative polyadenylation (APA) is an important post-transcriptional mechanism and has been demonstrated to act as a key regulator in plant growth and development. However, no attention has been paid to the role of APA in PGR-induced dwarfing in pomegranate. In this study, we characterized and compared APA-mediated regulation events underlying PGR-induced treatments and normal growth condition. Genome-wide alterations in the usage of poly(A) sites were elicited by PGR treatments, and these changes were involved in modulating the growth and development of pomegranate seedlings. Importantly, ample specificities were observed in APA dynamics among the different PGR treatments, which mirrors their distinct nature. Despite the asynchrony between APA events and differential gene expression, APA was found to regulate transcriptome via influencing microRNA (miRNA)-mediated mRNA cleavage or translation inhibition. A global preference for lengthening of 3' untranslated regions (3' UTRs) was observed under PGR treatments, which was likely to host more miRNA target sites in 3' UTRs and thus suppress the expression of the corresponding genes, especially those associated with developmental growth, lateral root branching, and maintenance of shoot apical meristem. Together, these results highlighted the key role of APA-mediated regulations in fine-tuning the PGR-induced dwarfed stature of pomegranate, which provides new insights into the genetic basis underlying the growth and development of pomegranate.
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Affiliation(s)
- Xinhui Xia
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, China
| | - Minhong Fan
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, China
| | - Yuqi Liu
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, China
| | - Xinyue Chang
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, China
| | - Jingting Wang
- College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Jingjing Qian
- College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Yuchen Yang
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Shenzhen, China
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Tse A, Janilkarn-Urena I, Lin J, Chang X, Efthymiou C, Idrissova A, Zhang M, Williams CK, Magaki S, Vinters HV, Davies DL, Gonen T, Gukasyan HJ, Seidler PM. Improving the solubility of pseudo-hydrophobic Alzheimer's Disease medicinal chemicals through co-crystal formulation. bioRxiv 2023:2023.04.25.538327. [PMID: 37162961 PMCID: PMC10168350 DOI: 10.1101/2023.04.25.538327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Natural products are ligands and potential inhibitors of Alzheimer's disease (AD) tau. Dihydromyricetin (DHM) is a CNS active natural product. Despite having signature polyphenolic character, DHM is ostensibly hydrophobic owing to intermolecular hydrogen bonds that shield hydrophilic phenols. Our research shows DHM becomes ionized at near-neutral pH allowing formulation of salts with transformed solubility. The MicroED co-crystal structure with trolamine reveals DHM salts as metastable solids with unlocked hydrogen bonding and a thermodynamic bent to solubilize in water. All salt formulations show better inhibitory activity against AD tau than the non-salt form, with efficacies correlating to enhanced solubilities. These results underscore the role of structural chemistry in guiding selection of solubilizing agents for chemical formulation. We propose DHM salts are appropriate formulations for research as dietary supplements to promote healthy aging by combating protein misfolding. Additionally, DHM is a suitable lead for medicinal chemistry and possible development of CNS pharmaceuticals.
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Affiliation(s)
- A Tse
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA
- Authors contributed equally to experimental work
| | - I Janilkarn-Urena
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA
- Authors contributed equally to experimental work
| | - J Lin
- Department of Biological Chemistry, University of California Los Angeles, 615 Charles E. Young Drive South, Los Angeles, CA 90095, USA
- Howard Hughes Medical Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
- Department of Neurology, David Geffen School of Medicine at University of California, Los Angeles, California 90095
- Authors contributed equally to experimental work
| | - X Chang
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA
| | - C Efthymiou
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA
| | - A Idrissova
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA
| | - M Zhang
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA
| | - CK Williams
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, California 90095
| | - S Magaki
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, California 90095
| | - HV Vinters
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California, Los Angeles, California 90095
- Department of Neurology, David Geffen School of Medicine at University of California, Los Angeles, California 90095
| | - DL Davies
- Titus Family Department of Clinical Pharmacy, University of Southern California School of Pharmacy, Los Angeles, CA 90089, USA
| | - T Gonen
- Department of Biological Chemistry, University of California Los Angeles, 615 Charles E. Young Drive South, Los Angeles, CA 90095, USA
- Howard Hughes Medical Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
- Department of Physiology, University of California Los Angeles, 615 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - HJ Gukasyan
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA
| | - PM Seidler
- Department of Pharmacology and Pharmaceutical Sciences, University of Southern California Mann School of Pharmacy and Pharmaceutical Sciences, 1985 Zonal Ave, Los Angeles, CA 90089-9121, USA
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27
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Chang X, Liu X, Martina B, Zeltins A, Augusto G, Vogel M, Mohsen MO, Speiser DE, Bachmann MF. Vaccination using mutated receptor binding domains of SARS-CoV-2: Evidence for partial immune escape but not serotype formation. Front Immunol 2023; 14:1114396. [PMID: 36845100 PMCID: PMC9950740 DOI: 10.3389/fimmu.2023.1114396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/09/2023] [Indexed: 02/12/2023] Open
Abstract
Introduction SARS-CoV-2 has developed a number of Variants of Concern (VOC) with increased infectivity and/or reduced recognition by neutralizing antibodies specific for the receptor binding domain (RBD) of the spike protein. Extended studies of other viruses have shown that strong and broad viral escape from neutralizing serum antibodies is typically associated with the formation of serotypes. Methods To address the question of serotype formation for SARS-CoV-2 in detail, we generated recombinant RBDs of VOCs and displayed them on virus-like particles (VLPs) for vaccination and specific antibody responses. Results As expected, mice immunized with wild type (wt) RBD generated antibodies that recognized wt RBD well but displayed reduced binding to VOC RBDs, in particular those with the E484K mutation. Unexpectedly, however, antibodies induced by the VOC vaccines typically recognized best the wt RBDs, often more than the homologous VOC RBDs used for immunization. Hence, these data do not reveal different serotypes but represent a newly observed viral evolution, suggesting a unique situation where inherent differences of RBDs are responsible for induction of neutralizing antibodies. Discussion Therefore, besides antibody (fine) specificity, other qualities of antibodies (e.g. their affinity) determine neutralizing capability. Immune escape of SARS-CoV-2 VOCs only affects a fraction of an individual's serum antibodies. Consequently, many neutralizing serum antibodies are cross-reactive and thus protective against multiple current and future VOCs. Besides considering variant sequences for next generation vaccines, broader protection will be achieved with vaccines that induce elevated titers of high-quality antibodies.
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Affiliation(s)
- Xinyue Chang
- International Immunology Centre, Anhui Agricultural University, Hefei, China
- Department of Rheumatology and Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Xuelan Liu
- International Immunology Centre, Anhui Agricultural University, Hefei, China
- Department of Rheumatology and Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | | | - Andris Zeltins
- Latvian Biomedical Research and Study Center, University of Riga, Riga, Latvia
| | - Gilles Augusto
- Department of Rheumatology and Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
- Jenner Institute, University of Oxford, Oxford, United Kingdom
| | - Monique Vogel
- Department of Rheumatology and Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Mona O. Mohsen
- Department of Rheumatology and Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
- Saiba GmbH, Pfäffikon, Switzerland
| | - Daniel E. Speiser
- Department of Rheumatology and Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Martin F. Bachmann
- International Immunology Centre, Anhui Agricultural University, Hefei, China
- Department of Rheumatology and Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
- Jenner Institute, University of Oxford, Oxford, United Kingdom
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Li G, Yu L, Liu T, Bao Y, Yu J, Xin B, Bao L, Li X, Chang X, Zhang S. Spatial and temporal variations of grassland vegetation on the Mongolian Plateau and its response to climate change. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1067209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
The Mongolian Plateau is an arid and semi-arid region with grassland as its main vegetation. It has a fragile ecosystem and is a sensitive area for global warming. The study is based on MODIS NDVI data and growth season meteorological data from 2000 to 2018, this study examined the spatial and temporal variation characteristics of grassland vegetation on the Mongolian Plateau during the growing season using trend analysis, partial correlation analysis, and residual analysis, and it explores the dual response of NDVI changes to climate and human activities. The study’s findings demonstrated that the growing season average NDVI of grassland vegetation on the plateau gradually increased from southwest to northeast during the growing season; the growing season average NDVI demonstrated a significant overall increase of 0.023/10a (p < 0.05) from 2000 to 2018, with an increase rate of 0.030/10a in Inner Mongolia and 0.019/10a in Mongolia; the area showing a significant increase in NDVI during the growing season accounted for 91.36% of the entire study area. In Mongolian Plateau grasslands during the growing season of 2000–2018, precipitation and downward surface shortwave radiation grew significantly at rates of 34.83mm/10a and 0.57 W/m2/10a, respectively, while average air temperature decreased slightly at a rate of −0.018°C/10a. Changes in meteorological factors of grassland vegetation varied by region as well, with Inner Mongolia seeing higher rates of precipitation, lower rates of average air temperature, and lower rates of downward surface shortwave radiation than Mongolia. On the Mongolian Plateau, the NDVI of grassland vegetation in the growing season showed a significant positive correlation with precipitation (0.31) and a significant negative correlation with average air temperature (−0.09) and downward surface shortwave radiation (−0.19), indicating that increased in NDVI was driven by an increase in precipitation paired with a decrease in air temperature and a decrease in surface shortwave radiation. The overall increase in NDVI caused by human activity in the grasslands of the Mongolian Plateau was primarily positive, with around 18.37% of the region being beneficial. Climate change and human activity both affect NDVI variations in Mongolian Plateau grasslands, which are spatially heterogeneous. Moderate ecological engineering and agricultural production activities are crucial for vegetation recovery. This work is crucial to further understanding surface–atmosphere interactions in arid and semi-arid regions in the context of global climate change.
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29
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Liu H, Li J, Chang X, He F, Ma J. Modeling Obesity-Associated Ovarian Dysfunction in Drosophila. Nutrients 2022; 14:nu14245365. [PMID: 36558524 PMCID: PMC9783805 DOI: 10.3390/nu14245365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
We perform quantitative studies to investigate the effect of high-calorie diet on Drosophila oogenesis. We use the central composite design (CCD) method to obtain quadratic regression models of body fat and fertility as a function of the concentrations of protein and sucrose, two major macronutrients in Drosophila diet, and treatment duration. Our results reveal complex interactions between sucrose and protein in impacting body fat and fertility when they are considered as an integrated physiological response. We verify the utility of our quantitative modeling approach by experimentally confirming the physiological responses-including increased body fat, reduced fertility, and ovarian insulin insensitivity-expected of a treatment condition identified by our modeling method. Under this treatment condition, we uncover a Drosophila oogenesis phenotype that exhibits an accumulation of immature oocytes and a halt in the production of mature oocytes, a phenotype that bears resemblance to key aspects of the human condition of polycystic ovary syndrome (PCOS). Our analysis of the dynamic progression of different aspects of diet-induced pathophysiology also suggests an order of the onset timing for obesity, ovarian dysfunction, and insulin resistance. Thus, our study documents the utility of quantitative modeling approaches toward understanding the biology of Drosophila female reproduction, in relation to diet-induced obesity and type II diabetes, serving as a potential disease model for human ovarian dysfunction.
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Affiliation(s)
- Huanju Liu
- Women’s Hospital and Institute of Genetics, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Genetic and Developmental Disorder, Hangzhou 310058, China
| | - Jiajun Li
- ZJU-UOE Institute, Zhejiang University School of Medicine, Haining 314400, China
| | - Xinyue Chang
- Women’s Hospital and Institute of Genetics, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Genetic and Developmental Disorder, Hangzhou 310058, China
| | - Feng He
- Women’s Hospital and Institute of Genetics, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Genetic and Developmental Disorder, Hangzhou 310058, China
- Correspondence: (F.H.); (J.M.)
| | - Jun Ma
- Women’s Hospital and Institute of Genetics, Zhejiang University School of Medicine, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory of Genetic and Developmental Disorder, Hangzhou 310058, China
- Women’s Reproductive Health Research Laboratory of Zhejiang Province, Hangzhou 310006, China
- Zhejiang University-University of Toronto Joint Institute of Genetics and Genome Medicine, Hangzhou 310058, China
- Correspondence: (F.H.); (J.M.)
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Chang X, Huang L, Liu J, Cao Y, Chang J. Using EBT3 Films and Monte Carlo Simulations to Determine the Percent Depth Dose of a New Y-90 Disc Source for Episcleral Brachytherapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.2174] [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: 10/31/2022]
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Huang X, Yang H, Tan D, Ge L, Fan Y, Chang X, Yang Z, Xiong H. VP.78 Clinical and genetic study of LAMA2-related muscular dystrophy patients with seizures. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.340] [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: 11/05/2022]
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Jin S, Wang X, Dong Y, Li G, Chang X, Zhang L, Jin S. The gene LpBCP increased NaHCO 3 resistance by enhancing lignin or ROS scavenging in the Nicotiana benthamiana. Plant Biol (Stuttg) 2022; 24:1057-1065. [PMID: 35976073 DOI: 10.1111/plb.13462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Lilium pumilum is an excellent wildflower germplasm resource with high resistance to salinity stress. The gene LpBCP plays an important role in salinity tolerance of L. pumilum. Studying the molecular mechanism of salinity resistance in L. pumilum will provide insights into multiple aspects, including breeding better varieties, environmental protection, improving soil conditions, etc. Conventional methods were used to determine different physiological indicators of Nicotiana benthamiana after NaHCO3 treatment, i.e. chlorophyll content, soluble phenol content and lignin content. RT-qPCR was carried out to find expression of LpBCP in different organs and under abiotic stresses. DAB was used to detect H2 O2 in leaves in situ. A yeast two-hybrid system was used to screen for LpBCP interacting proteins. LpBCP was cloned from bulbs of L. pumilum. The highest expression of LpBCP was in roots and bulbs of transgenic plants. LpBCP-overexpressed plants showed less wilting, compared to WT plants. LpBCP transgenic plants have higher chlorophyll, soluble phenol and lignin content, and lower relative conductivity under 500 mM NaHCO3 stress. In addition, H2 O2 scavenging in transgenic plants was much improved, indicating increased resistance to NaHCO3 stress. Thirteen LpBCP-interacting proteins were screened using the yeast two-hybrid method and five were associated with salt stress. Based on our findings, LPBCP could be a key gene that can be used to improve L. pumilum salt tolerance.
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Affiliation(s)
- S Jin
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
- Forestry College, Northeast Forestry University, Harbin, China
| | - X Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Y Dong
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
- Aulin College, Northeast Forestry University, Harbin, China
| | - G Li
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - X Chang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - L Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - S Jin
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
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Da C, Gu X, Lu C, Hua R, Chang X, Cheng Y, Qian F, Wang Y. Greenhouse gas emission benefits of adopting new energy vehicles in Suzhou City, China: A case study. Environ Sci Pollut Res Int 2022; 29:76286-76297. [PMID: 35668254 DOI: 10.1007/s11356-022-21284-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 03/07/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
The promotion of new energy in light-duty vehicles (LDVs) is considered as an effective approach for achieving low-carbon road transport targets. In this study, life cycle assessment was performed for five typical vehicle models in Suzhou City (fourth largest LDV stock in China): internal combustion engine vehicle (ICEV), hybrid electric vehicle (HEV), plug-in electric vehicle (PHEV), battery electric vehicle (BEV) and hydrogen fuel cell vehicle (HFCV). Their energy consumption, and greenhouse gas (GHG) and air pollutant emissions during vehicle and fuel cycles in 2020 were examined using the Greenhouse gases, Regulated Emissions, and Energy Use in Transportation (GREET) model. GHG emission reduction potential of LDV fleet was projected under various scenarios for 2021-2040. The results showed that BEVs exhibited advantages for replacing ICEVs over HEVs, PHEVs and HFCVs, taking into account China's road electrification policy. The GHG emission intensity of BEVs in 2040 was estimated to be 19-34% of ICEVs in 2020, with a deep decarbonized electricity mix and improved vehicle efficiency. For the aggressive Sustainable Development Scenario, the GHG emissions of LDVs would peak before 2026, ahead of China's target by 2030, and the ~ 100% share of EVs in 2040 would result in a lower GHG emissions, equivalent to the 2010 level. It highlights the importance of early action, green electricity mix, and public transport development in reducing GHG emissions of large LDV fleet.
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Affiliation(s)
- Cui Da
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No. 1 Kerui Road, Suzhou, 215009, People's Republic of China
| | - Xinyu Gu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No. 1 Kerui Road, Suzhou, 215009, People's Republic of China
| | - Chunchen Lu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No. 1 Kerui Road, Suzhou, 215009, People's Republic of China
| | - Ruiqi Hua
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No. 1 Kerui Road, Suzhou, 215009, People's Republic of China
| | - Xinyue Chang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No. 1 Kerui Road, Suzhou, 215009, People's Republic of China
| | - Yuanyuan Cheng
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No. 1 Kerui Road, Suzhou, 215009, People's Republic of China
| | - Feiyue Qian
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, No. 1 Kerui Road, Suzhou, 215009, People's Republic of China.
| | - Yiheng Wang
- Suzhou Foreign Language School, No. 201 Zhuyuan Road, Suzhou, 215011, People's Republic of China
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Li P, Hou S, Alharbi B, Wu Q, Chen Y, Zhou L, Gao T, Li R, Yang L, Chang X, Dong G, Liu X, Decurtins S, Liu SX, Hong W, Lambert CJ, Jia C, Guo X. Quantum Interference-Controlled Conductance Enhancement in Stacked Graphene-like Dimers. J Am Chem Soc 2022; 144:15689-15697. [PMID: 35930760 DOI: 10.1021/jacs.2c05909] [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: 11/30/2022]
Abstract
Stacking interactions are of significant importance in the fields of chemistry, biology, and material optoelectronics because they determine the efficiency of charge transfer between molecules and their quantum states. Previous studies have proven that when two monomers are π-stacked in series to form a dimer, the electrical conductance of the dimer is significantly lower than that of the monomer. Here, we present a strong opposite case that when two anthanthrene monomers are π-stacked to form a dimer in a scanning tunneling microscopic break junction, the conductance increases by as much as 25 in comparison with a monomer, which originates from a room-temperature quantum interference. Remarkably, both theory and experiment consistently reveal that this effect can be reversed by changing the connectivity of external electrodes to the monomer core. These results demonstrate that synthetic control of connectivity to molecular cores can be combined with stacking interactions between their π systems to modify and optimize charge transfer between molecules, opening up a wide variety of potential applications ranging from organic optoelectronics and photovoltaics to nanoelectronics and single-molecule electronics.
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Affiliation(s)
- Peihui Li
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China
| | - Songjun Hou
- Department of Physics, Lancaster University, Lancaster LA1 4YB, UK
| | - Bader Alharbi
- Department of Physics, Lancaster University, Lancaster LA1 4YB, UK.,Department of Physics, Prince Sattam Bin Abdulaziz University, Alkharj 16278, Saudi Arabia
| | - Qingqing Wu
- Department of Physics, Lancaster University, Lancaster LA1 4YB, UK
| | - Yijian Chen
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China
| | - Li Zhou
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China
| | - Tengyang Gao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Ruihao Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Lan Yang
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China
| | - Xinyue Chang
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China
| | - Gang Dong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Xunshan Liu
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland.,Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Silvio Decurtins
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Shi-Xia Liu
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Wenjing Hong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Colin J Lambert
- Department of Physics, Lancaster University, Lancaster LA1 4YB, UK
| | - Chuancheng Jia
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China.,Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, 292 Chengfu Road, Haidian District, Beijing 100871, P. R. China
| | - Xuefeng Guo
- Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, P. R. China.,Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, 292 Chengfu Road, Haidian District, Beijing 100871, P. R. China
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Rothen DA, Krenger PS, Nonic A, Balke I, Vogt AS, Chang X, Manenti A, Vedovi F, Resevica G, Walton SM, Zeltins A, Montomoli E, Vogel M, Bachmann MF, Mohsen MO. Intranasal administration of a virus like particles-based vaccine induces neutralizing antibodies against SARS-CoV-2 and variants of concern. Allergy 2022; 77:2446-2458. [PMID: 35403221 PMCID: PMC9111403 DOI: 10.1111/all.15311] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 12/20/2022]
Abstract
BACKGROUND The highly contagious SARS-CoV-2 is mainly transmitted by respiratory droplets and aerosols. Consequently, people are required to wear masks and maintain a social distance to avoid spreading of the virus. Despite the success of the commercially available vaccines, the virus is still uncontained globally. Given the tropism of SARS-CoV-2, a mucosal immune reaction would help to reduce viral shedding and transmission locally. Only seven out of hundreds of ongoing clinical trials are testing the intranasal delivery of a vaccine against COVID-19. METHODS In the current study, we evaluated the immunogenicity of a traditional vaccine platform based on virus-like particles (VLPs) displaying RBD of SARS-CoV-2 for intranasal administration in a murine model. The candidate vaccine platform, CuMVTT -RBD, has been optimized to incorporate a universal T helper cell epitope derived from tetanus-toxin and is self-adjuvanted with TLR7/8 ligands. RESULTS CuMVTT -RBD vaccine elicited a strong systemic RBD- and spike-IgG and IgA antibodies of high avidity. Local immune response was assessed, and our results demonstrate a strong mucosal antibody and plasma cell production in lung tissue. Furthermore, the induced systemic antibodies could efficiently recognize and neutralize different variants of concern (VOCs). CONCLUSION Our data demonstrate that intranasal administration of CuMVTT -RBD induces a protective systemic and local specific antibody response against SARS-CoV-2 and its VOCs.
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Affiliation(s)
- Dominik A. Rothen
- Department of Rheumatology and ImmunologyUniversity HospitalBernSwitzerland
- Department of BioMedical ResearchUniversity of BernBernSwitzerland
| | - Pascal S. Krenger
- Department of Rheumatology and ImmunologyUniversity HospitalBernSwitzerland
- Department of BioMedical ResearchUniversity of BernBernSwitzerland
| | - Aleksandra Nonic
- Department of Rheumatology and ImmunologyUniversity HospitalBernSwitzerland
- Department of BioMedical ResearchUniversity of BernBernSwitzerland
| | - Ina Balke
- Latvian Biomedical Research & Study CentreRigaLatvia
| | - Anne‐Cathrine S. Vogt
- Department of Rheumatology and ImmunologyUniversity HospitalBernSwitzerland
- Department of BioMedical ResearchUniversity of BernBernSwitzerland
| | - Xinyue Chang
- Department of Rheumatology and ImmunologyUniversity HospitalBernSwitzerland
- Department of BioMedical ResearchUniversity of BernBernSwitzerland
| | | | | | | | | | | | - Emanuele Montomoli
- VisMederi S.r.l.SienaItaly
- Department of Molecular and Developmental MedicineUniversity of SienaSienaItaly
| | - Monique Vogel
- Department of Rheumatology and ImmunologyUniversity HospitalBernSwitzerland
- Department of BioMedical ResearchUniversity of BernBernSwitzerland
| | - Martin F. Bachmann
- Department of Rheumatology and ImmunologyUniversity HospitalBernSwitzerland
- Department of BioMedical ResearchUniversity of BernBernSwitzerland
- Nuffield Department of MedicineThe Jenner InstituteUniversity of OxfordOxfordUK
| | - Mona O. Mohsen
- Department of Rheumatology and ImmunologyUniversity HospitalBernSwitzerland
- Department of BioMedical ResearchUniversity of BernBernSwitzerland
- Saiba AGPfaeffikonSwitzerland
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36
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Vogt ACS, Jörg L, Martina B, Krenger PS, Chang X, Zeltins A, Vogel M, Mohsen MO, Bachmann MF. Virus-Like Particles Are Efficient Tools for Boosting mRNA-Induced Antibodies. Front Immunol 2022; 13:864718. [PMID: 35784292 PMCID: PMC9245429 DOI: 10.3389/fimmu.2022.864718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 01/28/2022] [Accepted: 05/05/2022] [Indexed: 11/24/2022] Open
Abstract
mRNA based vaccines against COVID-19 have proven most successful at keeping SARS-CoV-2 pandemic at bay in many countries. Recently, there is an increased interest in heterologous prime-boost vaccination strategies for COVID-19 to maintain antibody responses for the control of continuously emerging SARS-CoV-2 variants of concern (VoCs) and to overcome other obstacles such as supply shortage, costs and reduced safety issues or inadequatly induced immune-responses. In this study, we investigated the antibody responses induced by heterologous prime-boost with vaccines based on mRNA and virus-like particles (VLPs). The VLP-based mCuMVTT-RBM vaccine candidate and the approved mRNA-1273 vaccine were used for this purpose. We find that homologous prime boost regimens with either mRNA or VLP induced high levels of high avidity antibodies. Optimal antibody responses were, however, induced by heterologous regimens both for priming with mRNA and boosting with VLP and vice versa, priming with VLP and boosting with mRNA. Thus, heterologous prime boost strategies may be able to optimize efficacy and economics of novel vaccine strategies.
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Affiliation(s)
- Anne-Cathrine S. Vogt
- Department of Rheumatology and Immunology, University Hospital, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
- *Correspondence: Anne-Cathrine S. Vogt, ; Mona O. Mohsen,
| | - Lukas Jörg
- Division of Allergology and Clinical Immunology, Department of Pneumology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Allergy Unit, Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland
| | - Byron Martina
- Erasmus Medical Center, Department of Viroscience, Rotterdam, Netherlands
- Artemis Bio-Support, Delft, Netherlands
| | - Pascal S. Krenger
- Department of Rheumatology and Immunology, University Hospital, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Xinyue Chang
- Department of Rheumatology and Immunology, University Hospital, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Andris Zeltins
- Latvian Biomedical Research & Study Centre, Riga, Latvia
| | - Monique Vogel
- Department of Rheumatology and Immunology, University Hospital, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Mona O. Mohsen
- Department of Rheumatology and Immunology, University Hospital, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
- *Correspondence: Anne-Cathrine S. Vogt, ; Mona O. Mohsen,
| | - Martin F. Bachmann
- Department of Rheumatology and Immunology, University Hospital, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
- Nuffield Department of Medicine, Centre for Cellular and Molecular Physiology (CCMP), The Jenner Institute, University of Oxford, Oxford, United Kingdom
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Wang X, Xue H, Chang X, Jin Z. Gastrointestinal: Epithelioid angiomyolipoma of the pancreas. J Gastroenterol Hepatol 2022; 37:781. [PMID: 34978112 DOI: 10.1111/jgh.15739] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 11/16/2021] [Indexed: 12/09/2022]
Affiliation(s)
- X Wang
- Department of Radiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - H Xue
- Department of Radiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - X Chang
- Department of Pathology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Z Jin
- Department of Radiology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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Chang X, Liu X, Mohsen MO, Zeltins A, Martina B, Vogel M, Bachmann MF. Induction of Broadly Cross-Reactive Antibodies by Displaying Receptor Binding Domains of SARS-CoV-2 on Virus-like Particles. Vaccines (Basel) 2022; 10:vaccines10020307. [PMID: 35214764 PMCID: PMC8876827 DOI: 10.3390/vaccines10020307] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/24/2022] [Accepted: 02/11/2022] [Indexed: 01/14/2023] Open
Abstract
The impact of the COVID-19 pandemic has been reduced since the application of vaccination programs, mostly shown in the reduction of hospitalized patients. However, the emerging variants, in particular Omicron, have caused a steep increase in the number of infections; this increase is, nevertheless, not matched by an increase in hospitalization. Therefore, a vaccine that induces cross-reactive antibodies against most or all variants is a potential solution for the issue of emerging new variants. Here, we present a vaccine candidate which displays receptor-binding domain (RBD) of SARS-CoV-2 on virus-like particles (VLP) that, in mice, not only induce strong antibody responses against RBD but also bind RBDs from other variants of concern (VOCs). The antibodies induced by wild-type (wt) RBD displayed on immunologically optimized Cucumber mosaic virus incorporated tetanus toxin (CuMVTT) VLPs bind to wt as well as RBDs of VOCs with high avidities, indicating induction of strongly cross-reactive IgG antibodies. Interestingly, similar cross-reactive IgA antibodies were induced in immunized mice. Furthermore, these cross-reactive antibodies demonstrated efficacy in neutralizing wt (Wuhan) as well as SARS-CoV-2 VOCs (Beta, Delta, and Gamma). In summary, RBDs displayed on VLPs are capable of inducing protective cross-reactive IgG and IgA antibodies in mice, indicating that it may be possible to cover emerging VOCs with a single vaccine based on wt RBD.
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Affiliation(s)
- Xinyue Chang
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
| | - Xuelan Liu
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, China;
| | - Mona O. Mohsen
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
- Saiba GmbH, 8088 Pfäffikon, Switzerland
| | - Andris Zeltins
- Latvian Biomedical Research & Study Center, Ratsupites 1, LV1067 Riga, Latvia;
| | | | - Monique Vogel
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
| | - Martin F. Bachmann
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, China;
- Jenner Institute, University of Oxford, Old Road Campus, Roosevelt Drive, Oxford OX3 7BN, UK
- Correspondence:
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Chang X, Dong M, Mi X, Hu M, Lu J, Chen X. The Protective Effect of Trichilia catigua A. Juss. on DEHP-Induced Reproductive System Damage in Male Mice. Front Pharmacol 2022; 13:832789. [PMID: 35185586 PMCID: PMC8853101 DOI: 10.3389/fphar.2022.832789] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 12/10/2021] [Accepted: 01/17/2022] [Indexed: 01/04/2023] Open
Abstract
The present study aimed to explore the protective effect and molecular mechanisms of Trichilia catigua A. Juss. extract (TCE) against di (2-ethylhexyl) phthalate (DEHP)-induced damage to the reproductive system of mice. Acute toxicity tests revealed that the maximum tolerated dose (MTD) in mice was up to 2.7 g kg−1. After induction with DEHP, TCE (L-TCE, M-TCE, H-TCE) was orally administered to mice for 28 days. Differences in indicators among groups showed that TCE significantly improved the anogenital distance and the organ indexes of the epididymides and testes. It also significantly reduced varicocele and interstitial cell lesions compared to the model group. H-TCE reduced the sperm abnormality rate, increased the levels of sex hormones, Na+K+ and Mg2+, Ca2+-ATPase enzyme activity, antioxidant enzyme vitality, coupled with a significant decrease in LH and MDA contents. The levels of testicular marker enzymes ACP and LDH were significantly augmented by both M-TCE and H-TCE. Further studies claimed that DEHP induction reduced the mRNA expression levels of Nrf2, SOD2, SOD3, CDC25C CDK1, CYP11A1, 3β-HSD, 5ɑ-R, AR, SF1, and CYP17A1, increased the level of Keap1, while TCE reversed the expression levels of these genes. Meanwhile, IHC results demonstrated a significant change in the expression activity of the relevant proteins compared to the control group. The results suggest that M-TCE and H-TCE enabled the recovery of DEHP-induced reproductive system damage in male mice by improving testicular histopathology, repairing testicular function, and reducing oxidative stress damage. The oxidation-related Keap1-Nrf2 pathway, SODs enzyme, the cell cycle control-related CDC25C-CDK1 pathway, and the steroidogenic-related pathway may contribute to this protective effects of TCE.
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Affiliation(s)
| | | | | | | | - Juan Lu
- *Correspondence: Xi Chen, ; Juan Lu,
| | - Xi Chen
- *Correspondence: Xi Chen, ; Juan Lu,
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Chang X, Krenger P, Krueger CC, Zha L, Han J, Yermanos A, Roongta S, Mohsen MO, Oxenius A, Vogel M, Bachmann MF. TLR7 Signaling Shapes and Maintains Antibody Diversity Upon Virus-Like Particle Immunization. Front Immunol 2022; 12:827256. [PMID: 35126381 PMCID: PMC8807482 DOI: 10.3389/fimmu.2021.827256] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 12/01/2021] [Accepted: 12/27/2021] [Indexed: 12/12/2022] Open
Abstract
Virus-like particles (VLPs) are used in different marketed vaccines and are able to induce potent antibody responses. The innate pattern recognition receptors TLR7/8 recognize single stranded (ss) RNA naturally packaged into some VLPs and have been shown to enhance the production of IgG antibodies upon immunization. Here we demonstrate that, upon immunization with RNA-loaded bacteriophage-derived VLP Qβ, TLR7 signaling accelerates germinal center formation, promotes affinity/avidity maturation of VLP-specific IgG and isotype switching to IgG2b/2c. These findings extrapolated to antigens displayed on Qβ; as Fel d 1, the major cat allergen, chemically attached to Qβ also induced higher affinity/avidity IgG2b/2c antibodies in a TLR7-dependent fashion. Chimeric mice lacking TLR7-expression exclusively in B cells demonstrated that the enhanced IgG responses were driven by a B cell intrinsic mechanism. Importantly, deep sequencing of the BCR repertoire of antigen-specific B cells demonstrated higher diversity in mice with TLR7 signaling in B cells, suggesting that TLR7-signaling drives BCR repertoire development and diversity. Furthermore, the current data demonstrate that high levels of clonal diversity are reached early in the response and maintained by TLR7 signaling. In conclusion, TLR7 signaling enhances levels and quality of IgG antibodies, and this finding has major implications for vaccine design.
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Affiliation(s)
- Xinyue Chang
- Department of Rheumatology & Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Pascal Krenger
- Department of Rheumatology & Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Caroline C. Krueger
- Department of Rheumatology & Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Lisha Zha
- International Immunology Centre, Anhui Agricultural University, Hefei, China
| | - Jiami Han
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH), Zürich, Basel, Switzerland
| | - Alexander Yermanos
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH), Zürich, Basel, Switzerland
- Institute of Microbiology, Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Salony Roongta
- Department of Rheumatology & Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Mona O. Mohsen
- Department of Rheumatology & Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Annette Oxenius
- Institute of Microbiology, Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland
| | - Monique Vogel
- Department of Rheumatology & Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
| | - Martin F. Bachmann
- Department of Rheumatology & Immunology, University Hospital Bern, Bern, Switzerland
- Department of BioMedical Research, University of Bern, Bern, Switzerland
- International Immunology Centre, Anhui Agricultural University, Hefei, China
- Jenner Institute, University of Oxford, Oxford, United Kingdom
- *Correspondence: Martin F. Bachmann,
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Mi X, Hu M, Dong M, Yang Z, Zhan X, Chang X, Lu J, Chen X. Folic Acid Decorated Zeolitic Imidazolate Framework (ZIF-8) Loaded with Baicalin as a Nano-Drug Delivery System for Breast Cancer Therapy. Int J Nanomedicine 2022; 16:8337-8352. [PMID: 34992370 PMCID: PMC8714011 DOI: 10.2147/ijn.s340764] [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: 09/27/2021] [Accepted: 12/14/2021] [Indexed: 01/01/2023] Open
Abstract
Background Baicalin (BAN) has attracted widespread attention due to its low-toxicity and efficient antitumor activity, but its poor water solubility and low bioavailability severely limit its clinical application. Development of a targeted drug delivery system is a good strategy to improve the antitumor activity of baicalin. Methods We prepared a BAN nano-drug delivery system PEG-FA@ZIF-8@BAN with a zeolite imidazole framework-8 (ZIF-8) as a carrier, which can achieve the response of folate receptor (FR). We characterized this system in terms of morphology, particle size, zeta-potential, infrared (IR), ultraviolet (UV), x-ray diffraction (XRD), and Brunel-Emmett-Teller (BET), and examined the in vitro cytotoxicity and cellular uptake properties of PEG-FA@ZIF-8@BAN using MCF-7 cells. Lastly, we established a 4T1 tumor-bearing mouse model and evaluated its in vivo anti-mammary cancer activity. Results The PEG-FA@ZIF-8@BAN nano-delivery system had good dispersion with a BAN loading efficiency of 41.45 ± 1.43%, hydrated particle size of 176 ± 8.1 nm, Zeta-potential of −23.83 ± 1.1 mV, and slow and massive drug release in an acidic environment (pH 5.0), whereas release was 11.03% in a neutral environment (pH 7.4). In vitro studies showed that PEG-FA@ZIF-8@BAN could significantly enhance the killing effect of BAN on MCF-7 cells, and the folic acid-mediated targeting could lead to better uptake of nanoparticles by tumor cells and thus better killing of cancer cells. In vivo studies also showed that PEG-FA@ZIF-8@BAN significantly increased the inhibition of the proliferation of solid breast cancer tumors (p < 0.01 or p < 0.001). Conclusion The PEG-FA@ZIF-8@BAN nano-drug delivery system significantly enhanced the anti-breast cancer effect of baicalin both in vivo and in vitro, providing a more promising drug delivery system for the clinical applications and tumor management.
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Affiliation(s)
- Xiao Mi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100094, People's Republic of China
| | - Meigeng Hu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100094, People's Republic of China
| | - Mingran Dong
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100094, People's Republic of China
| | - Zhihong Yang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100094, People's Republic of China
| | - Xia Zhan
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing, 100048, People's Republic of China
| | - Xinyue Chang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100094, People's Republic of China
| | - Juan Lu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100094, People's Republic of China
| | - Xi Chen
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100094, People's Republic of China
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Mohsen MO, Balke I, Zinkhan S, Zeltina V, Liu X, Chang X, Krenger PS, Plattner K, Gharailoo Z, Vogt AS, Augusto G, Zwicker M, Roongta S, Rothen DA, Josi R, da Costa JJ, Sobczak JM, Nonic A, Brand L, Nuss K, Martina B, Speiser DE, Kündig T, Jennings GT, Walton SM, Vogel M, Zeltins A, Bachmann MF. A scalable and highly immunogenic virus-like particle-based vaccine against SARS-CoV-2. Allergy 2022; 77:243-257. [PMID: 34496033 PMCID: PMC8653185 DOI: 10.1111/all.15080] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [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: 07/12/2021] [Revised: 08/12/2021] [Accepted: 08/18/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND SARS-CoV-2 caused one of the most devastating pandemics in the recent history of mankind. Due to various countermeasures, including lock-downs, wearing masks, and increased hygiene, the virus has been controlled in some parts of the world. More recently, the availability of vaccines, based on RNA or adenoviruses, has greatly added to our ability to keep the virus at bay; again, however, in some parts of the world only. While available vaccines are effective, it would be desirable to also have more classical vaccines at hand for the future. Key feature of vaccines for long-term control of SARS-CoV-2 would be inexpensive production at large scale, ability to make multiple booster injections, and long-term stability at 4℃. METHODS Here, we describe such a vaccine candidate, consisting of the SARS-CoV-2 receptor-binding motif (RBM) grafted genetically onto the surface of the immunologically optimized cucumber mosaic virus, called CuMVTT -RBM. RESULTS Using bacterial fermentation and continuous flow centrifugation for purification, the yield of the production process is estimated to be >2.5 million doses per 1000-litre fermenter run. We demonstrate that the candidate vaccine is highly immunogenic in mice and rabbits and induces more high avidity antibodies compared to convalescent human sera. The induced antibodies are more cross-reactive to mutant RBDs of variants of concern (VoC). Furthermore, antibody responses are neutralizing and long-lived. In addition, the vaccine candidate was stable for at least 14 months at 4℃. CONCLUSION Thus, the here presented VLP-based vaccine may be a good candidate for use as conventional vaccine in the long term.
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Vogel M, Augusto G, Chang X, Liu X, Speiser D, Mohsen MO, Bachmann MF. Molecular definition of severe acute respiratory syndrome coronavirus 2 receptor-binding domain mutations: Receptor affinity versus neutralization of receptor interaction. Allergy 2022; 77:143-149. [PMID: 34240429 PMCID: PMC8441680 DOI: 10.1111/all.15002] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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: 04/19/2021] [Revised: 05/21/2021] [Accepted: 06/03/2021] [Indexed: 12/12/2022]
Abstract
Background Several new variants of SARS‐CoV‐2 have emerged since fall 2020 which have multiple mutations in the receptor‐binding domain (RBD) of the spike protein. It is unclear which mutations affect receptor affinity versus immune recognition. Methods We produced wild type RBD, RBD with single mutations (E484K, K417N, or N501Y) or with all three mutations combined and tested their binding to ACE2 by biolayer interferometry (BLI). The ability of convalescent sera to recognize RBDs and block their interaction with ACE2 was tested as well. Results We demonstrated that single mutation N501Y increased binding affinity to ACE2 but did not strongly affect its recognition by convalescent sera. In contrast, single mutation E484K had almost no impact on the binding kinetics, but essentially abolished recognition of RBD by convalescent sera. Interestingly, combining mutations E484K, K417N, and N501Y resulted in a RBD with both features: enhanced receptor binding and abolished immune recognition. Conclusions Our data demonstrate that single mutations either affect receptor affinity or immune recognition while triple mutant RBDs combine both features.
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Affiliation(s)
- Monique Vogel
- Department of Immunology Inselspital University clinic of Rheumatology and Immunology Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
| | - Gilles Augusto
- The Jenner Institute Nuffield Department of Medicine Centre for Cellular and Molecular Physiology (CCMP) University of Oxford Oxford UK
| | - Xinyue Chang
- Department of Immunology Inselspital University clinic of Rheumatology and Immunology Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
| | - Xuelan Liu
- Department of Immunology Inselspital University clinic of Rheumatology and Immunology Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
- Dermatology International Immunology Centre Anhui Agricultural University Hefei China
| | - Daniel Speiser
- Department of Immunology Inselspital University clinic of Rheumatology and Immunology Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
| | - Mona O. Mohsen
- Department of Immunology Inselspital University clinic of Rheumatology and Immunology Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
| | - Martin F. Bachmann
- Department of Immunology Inselspital University clinic of Rheumatology and Immunology Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
- The Jenner Institute Nuffield Department of Medicine Centre for Cellular and Molecular Physiology (CCMP) University of Oxford Oxford UK
- Dermatology International Immunology Centre Anhui Agricultural University Hefei China
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Chang X, Yang A, Bao X, He Z, Zhou K, Dong Q, Luo W. An innovative structured fruit (SF) product made from litchi juice, king oyster mushroom (Pleurotus eryngii) and gellan gum: Nutritional, textural, sensorial properties. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.112344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Chang X, Zeltins A, Mohsen MO, Gharailoo Z, Zha L, Liu X, Walton S, Vogel M, Bachmann MF. A Novel Double Mosaic Virus-like Particle-Based Vaccine against SARS-CoV-2 Incorporates Both Receptor Binding Motif (RBM) and Fusion Domain. Vaccines (Basel) 2021; 9:1287. [PMID: 34835218 PMCID: PMC8619050 DOI: 10.3390/vaccines9111287] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/29/2021] [Accepted: 10/31/2021] [Indexed: 11/22/2022] Open
Abstract
COVID-19 has emerged, and has rapidly become a major health problem worldwide, causing millions of mortalities. Vaccination against COVID-19 is the most efficient way to stop the pandemic. The goal of vaccines is to induce neutralizing antibodies against SARS-CoV-2 virus. Here, we present a novel double mosaic virus-like particle (VLP) displaying two independent neutralizing epitopes, namely the receptor binding motif (RBM) located in S1 and the fusion peptide (AA 817-855) located in S2. CuMVTT virus-like particles were used as VLP scaffold and both domains were genetically fused in the middle of CuMVTT subunits, which co-assembled into double mosaic particles (CuMVTT-DF). A single fusion mosaic particle (CuMVTT-FP) containing the fusion peptide only was used for comparison. The vaccines were produced in E. coli, and electron microscopy and dynamic light scattering confirmed their integrity and homogeneity. In addition, the CuMVTT-DF vaccine was well recognized by ACE2 receptor, indicating that the RBM was in native conformation. Both CuMVTT-FP and CuMVTT-DF vaccines induced high levels of high avidity IgG antibodies as well as IgA recognizing spike and RBD in the case of CuMVTT-DF. Both vaccine candidates induced virus-neutralizing antibodies indicating that the fusion peptide can independently induce virus-neutralizing antibodies. In contrast, CuMVTT-DF containing both RBM and fusion peptide induced a higher level of neutralizing antibodies suggesting that the new double mosaic vaccine candidate CuMVTT-DF consisting of two antigens in one VLP maybe an attractive candidate for scale-up in a bacterial fermentation process for clinical development.
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Affiliation(s)
- Xinyue Chang
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (Z.G.); (X.L.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
| | - Andris Zeltins
- Latvian Biomedical Research & Study Center, Ratsupites 1, LV1067 Riga, Latvia;
| | - Mona O. Mohsen
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (Z.G.); (X.L.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
- Saiba GmbH, 8808 Pfäffikon, Switzerland;
| | - Zahra Gharailoo
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (Z.G.); (X.L.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
| | - Lisha Zha
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, China;
| | - Xuelan Liu
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (Z.G.); (X.L.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, China;
| | | | - Monique Vogel
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (Z.G.); (X.L.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
| | - Martin F. Bachmann
- Department of Rheumatology and Immunology, University Hospital Bern, 3010 Bern, Switzerland; (X.C.); (M.O.M.); (Z.G.); (X.L.); (M.V.)
- Department of BioMedical Research, University of Bern, 3012 Bern, Switzerland
- International Immunology Centre, Anhui Agricultural University, Hefei 230036, China;
- Jenner Institute, University of Oxford, Oxford OX3 7BN, UK
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Chang X, Deng W, Wenjie N, Li C, Han W, Gao L, Wang S, Zhou Z, Chen D, Qinfu F, Bi N, Lin Y, Gao S, Chen J, Xiao Z. Comparison of Two Major Staging Systems in Predicting Survival and Recommendation of Postoperative Radiotherapy Based on the 11th Japanese Classification for Esophageal Carcinoma After Curative Resection. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chang X, Augusto GS, Liu X, Kündig TM, Vogel M, Mohsen MO, Bachmann MF. BNT162b2 mRNA COVID-19 vaccine induces antibodies of broader cross-reactivity than natural infection, but recognition of mutant viruses is up to 10-fold reduced. Allergy 2021; 76:2895-2998. [PMID: 33948956 PMCID: PMC8222933 DOI: 10.1111/all.14893] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 02/06/2023]
Affiliation(s)
- Xinyue Chang
- Immunology RIAUniversity of Bern Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
| | - Gilles Sousa Augusto
- Immunology RIAUniversity of Bern Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
- Nuffield Department of Medicine Centre for Cellular and Molecular Physiology (CCMP) The Jenner InstituteUniversity of Oxford Oxford UK
| | - Xuelan Liu
- Immunology RIAUniversity of Bern Bern Switzerland
- International Immunology Centre Anhui Agricultural University Hefei China
| | | | - Monique Vogel
- Immunology RIAUniversity of Bern Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
| | - Mona O. Mohsen
- Immunology RIAUniversity of Bern Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
| | - Martin F. Bachmann
- Immunology RIAUniversity of Bern Bern Switzerland
- Department of BioMedical Research University of Bern Bern Switzerland
- Nuffield Department of Medicine Centre for Cellular and Molecular Physiology (CCMP) The Jenner InstituteUniversity of Oxford Oxford UK
- International Immunology Centre Anhui Agricultural University Hefei China
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Wang L, Cui H, Chang X, Zhu M, Zhao Z. Increased nitrogen fertilization inhibits the biocontrol activity promoted by the intercropping partner plant. Insect Sci 2021; 28:1179-1190. [PMID: 32567801 DOI: 10.1111/1744-7917.12843] [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] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/14/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
The examination of the compatibility between agricultural practices and biocontrol activities is crucial for establishing an efficient, eco-friendly, and sustainable pest management program. In this study, we examined the population dynamics of two specialist aphids, the English grain aphid (Sitobion avenae) on potted wheat and the pea aphid (Acyrthosiphon pisum) on potted alfalfa, as well as the biocontrol activity of a generalist predator, the harlequin ladybird beetle (Harmonia axyridis). We investigated their responses to the presence of the intercropping partner plant species (alfalfa and wheat, respectively) through plant volatiles or visual cues at three nitrogen fertilizer levels in a greenhouse. In the absence of the predator, the English grain aphid population growth rate increased significantly with increasing nitrogen levels, whereas the pea aphid population increased significantly more slowly in response to high nitrogen levels. The English grain aphid and pea aphid population dynamics were unaffected by the presence of the intercropping partner. However, the presence of the intercropping partner enhanced the control of both aphid populations by the harlequin ladybird beetle. Increasing nitrogen fertilizer levels decreased the predation rates, which were otherwise increased by the intercropping partner. The beneficial effects of the intercropping partner were eventually non-existent at the highest nitrogen level tested. These results imply that the interaction between the presence of intercropping partner and the nitrogen fertilizer application affects the biocontrol activity of the natural enemies of insect pests. Thus, the compatibility between agricultural intensification and biocontrol strategies in integrated pest management programs need to be investigated.
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Affiliation(s)
- Leyun Wang
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Hongying Cui
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Xinyue Chang
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Mengmeng Zhu
- Institute of Plant Protection, Ningxia Academy of Agricultural and Forestry Sciences, Yinchuan, China
| | - Zihua Zhao
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, China
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Chang X, Zha L, Wallimann A, Mohsen MO, Krenger P, Liu X, Vogel M, Bachmann MF. Low-affinity but high-avidity interactions may offer an explanation for IgE-mediated allergen cross-reactivity. Allergy 2021; 76:2565-2574. [PMID: 33866583 PMCID: PMC8361967 DOI: 10.1111/all.14864] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 02/23/2021] [Accepted: 03/14/2021] [Indexed: 12/04/2022]
Abstract
Background Allergy is a global disease with overall frequencies of >20%. Symptoms vary from irritating local itching to life‐threatening systemic anaphylaxis. Even though allergies are allergen‐specific, there is a wide range of cross‐reactivities (eg apple and latex) that remain largely unexplained. Given the abilities of low‐affinity IgG antibodies to inhibit mast cells activation, here we elucidate the minimal affinity of IgE antibodies to induce type I hypersensitivity. Methods Three mature (high‐affinity) IgE antibodies recognizing three distinct epitopes on Fel d 1, the major cat allergen, were back‐mutated to germline conformation, resulting in binding to Fel d 1 with low affinity. The ability of these IgE antibodies to activate mast cells in vitro and in vivo was tested. Results We demonstrate that affinities as low as 10−7 M are sufficient to activate mast cells in vitro and drive allergic reactions in vivo. Low‐affinity IgE antibodies are able to do so, since they bind allergens bivalently on the surface of mast cells, leading to high‐avidity interactions. Conclusions These results suggest that the underlying mechanism of allergen cross‐reactivity may be low‐affinity but high‐avidity binding between IgE antibodies and cross‐reactive allergen.
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Affiliation(s)
- Xinyue Chang
- International Immunology Center Anhui Agricultural University Anhui China
- Immunology RIA, Inselspital University of Bern Bern Switzerland
| | - Lisha Zha
- International Immunology Center Anhui Agricultural University Anhui China
- Immunology RIA, Inselspital University of Bern Bern Switzerland
| | | | - Mona O. Mohsen
- International Immunology Center Anhui Agricultural University Anhui China
| | - Pascal Krenger
- International Immunology Center Anhui Agricultural University Anhui China
| | - Xuelan Liu
- International Immunology Center Anhui Agricultural University Anhui China
- Immunology RIA, Inselspital University of Bern Bern Switzerland
| | - Monique Vogel
- International Immunology Center Anhui Agricultural University Anhui China
| | - Martin F. Bachmann
- International Immunology Center Anhui Agricultural University Anhui China
- Immunology RIA, Inselspital University of Bern Bern Switzerland
- Nuffield Department of Medicine Centre for Cellular and Molecular Physiology (CCMP) The Jenner Institute, University of Oxford Oxford UK
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Li G, Chang X, Luo X, Zhao Y, Wang W, Kang X. [Fucoxanthin induces prostate cancer PC-3 cell apoptosis by causing mitochondria dysfunction and oxidative stress]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:953-959. [PMID: 34238751 DOI: 10.12122/j.issn.1673-4254.2021.06.21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the apoptosis- inducing effect of fucoxanthin in human prostate cancer PC-3 cells and the underlying mechanism. OBJECTIVE The viability and apoptosis of PC-3 cells treated with fucoxanthin were analyzed using commercial kits, and the mitochondrial membrane potential, mitochondrial morphology and mitochondrial superoxide were detected using fluorescence probe staining. The contents of ATP, H2O2, malondialdehyde (MDA), superoxide and the total antioxidant capacity of PC-3 cells were determined. The protein expressions of Bcl-2, Bax and cytochrome c were detected with Western blotting, and the activity of caspase-9 and caspase- 3/7 was detected using corresponding kits. OBJECTIVE Fucoxanthin significantly inhibited the viability of PC-3 cells in a time- and dose-dependent manner, and dose-dependently induced apoptosis of the cells (P < 0.05). Fucoxanthin-treated PC-3 cells showed significantly decreased mitochondrial membrane potential, mitochondrial fragmentation and increased superoxide level in the mitochondria (P < 0.05), and these effects of fucoxanthin were dose- dependent. Fucoxanthin dose-dependently decreased ATP level and the total antioxidant capacity of PC-3 cells, increased the contents of H2O2, MDA and superoxide (all P < 0.05), enhanced the protein expressions of Bax and cytochrome c in the cytoplasm, and lowered the protein expressions of Bcl-2 and cytochromes in the mitochondria (P < 0.05). OBJECTIVE Fucoxanthin induces apoptosis of PC-3 cells by triggering mitochondrial dysfunction to cause oxidative stress and by activating mitochondria-mediated apoptotic signaling pathways, suggesting its potential in prostate cancer treatment.
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Affiliation(s)
- G Li
- Department of Urology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
| | - X Chang
- Hainan Institute for Food Control(Hainan Experimental Animal Center), Haikou 570314, China
| | - X Luo
- Hainan Institute for Food Control(Hainan Experimental Animal Center), Haikou 570314, China
| | - Y Zhao
- Hainan Institute for Drug Control, Hainan Key Laboratory for Pharmaceutical Quality Research, Haikou, 570216, China
| | - W Wang
- Department of Urology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
| | - X Kang
- Department of Urology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
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