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Fu J, Li G, Li X, Song S, Cheng L, Rui B, Jiang L. Gut commensal Alistipes as a potential pathogenic factor in colorectal cancer. Discov Oncol 2024; 15:473. [PMID: 39331213 PMCID: PMC11436608 DOI: 10.1007/s12672-024-01393-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2024] [Accepted: 09/24/2024] [Indexed: 09/28/2024] Open
Abstract
Although previous research has shown that inflammation is associated with development of colorectal cancer (CRC), questions remain about whether inflammatory factor-secreting bacteria play a crucial role in CRC development. The potential role of gut microbiota in secreting inflammatory factors involved in the carcinogenesis of CRC among Chinese patients was explored in this study. 16S rRNA sequencing was utilized to evaluate the distinct microbial characteristics between patients with CRC and colorectal adenoma. The serum levels of TNF-α, IL-6 and IL-10 were measured using Enzyme-linked immunosorbent assay (ELISA), while the expression of LRG1 and TGF-β1 in tissues was evaluated by immunohistochemistry. The correlation between gut microbiota and inflammatory factor signaling was analyzed. Compared with the adenoma group, CRC patients exhibit distinct pathologies. Moreover, elevated levels of CEA, erythrocytes and haemoglobin in the blood of CRC patients were found. In addition, CRC patients have significantly higher levels of TNF-α, IL-6, IL-10, LRG1 and TGF-β1. Spearman correlation analysis revealed that LRG1 was positively related to IL-6 and TNF-α, respectively. The correlation analysis results of TGF-β1 were consistent with the above. The abundance of Blautia and Streptococcus was lower in CRC patients, while the relative abundance of Alistipes, Peptostreptococcus and Porphyromonas was significantly elevated. Moreover, positive correlations between Alistipes and inflammatory factor signaling were also found. Our results suggest that gut commensal Alistipes is a key bacterium with pro-inflammatory properties in the CRC carcinogenesis. TNF-α and IL-6 associated with Alistipes might activate LRG1/TGF-β1 signaling which contributed to the carcinogenesis of CRC.
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Affiliation(s)
- Jingjing Fu
- Department of Pharmacy, Anhui No.2 Provincial People's Hospital, Hefei, 230041, Anhui, China
- Anhui No.2 Provincial People's Hospital Clinical College, Anhui Medical University, Hefei, 230041, Anhui, China
| | - Guangyao Li
- Department of Gastrointestinal Surgery, The Second People's Hospital of Wuhu, Wuhu, 241000, Anhui, China
| | - Xiaoping Li
- Department of Gastroenterology Department 1, Anhui No.2 Provincial People's Hospital, Hefei, 230041, Anhui, China
| | - Shasha Song
- Department of Gastroenterology, the Second Hospital of Anhui Medical University, Hefei, 230601, Anhui, China
| | - Lijuan Cheng
- Department of Pharmacy, Anhui No.2 Provincial People's Hospital, Hefei, 230041, Anhui, China
- Anhui No.2 Provincial People's Hospital Clinical College, Anhui Medical University, Hefei, 230041, Anhui, China
| | - Beibei Rui
- Department of Pharmacy, Anhui No.2 Provincial People's Hospital, Hefei, 230041, Anhui, China
- Anhui No.2 Provincial People's Hospital Clinical College, Anhui Medical University, Hefei, 230041, Anhui, China
| | - Lei Jiang
- Department of Pharmacy, Anhui No.2 Provincial People's Hospital, Hefei, 230041, Anhui, China.
- Anhui No.2 Provincial People's Hospital Clinical College, Anhui Medical University, Hefei, 230041, Anhui, China.
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2
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Qian L, Zhu J, Xue Z, Zhou Y, Xiang N, Xu H, Sun R, Gong W, Cai X, Sun L, Ge W, Liu Y, Su Y, Lin W, Zhan Y, Wang J, Song S, Yi X, Ni M, Zhu Y, Hua Y, Zheng Z, Guo T. Proteomic landscape of epithelial ovarian cancer. Nat Commun 2024; 15:6462. [PMID: 39085232 PMCID: PMC11291745 DOI: 10.1038/s41467-024-50786-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 07/19/2024] [Indexed: 08/02/2024] Open
Abstract
Epithelial ovarian cancer (EOC) is a deadly disease with limited diagnostic biomarkers and therapeutic targets. Here we conduct a comprehensive proteomic profiling of ovarian tissue and plasma samples from 813 patients with different histotypes and therapeutic regimens, covering the expression of 10,715 proteins. We identify eight proteins associated with tumor malignancy in the tissue specimens, which are further validated as potential circulating biomarkers in plasma. Targeted proteomics assays are developed for 12 tissue proteins and 7 blood proteins, and machine learning models are constructed to predict one-year recurrence, which are validated in an independent cohort. These findings contribute to the understanding of EOC pathogenesis and provide potential biomarkers for early detection and monitoring of the disease. Additionally, by integrating mutation analysis with proteomic data, we identify multiple proteins related to DNA damage in recurrent resistant tumors, shedding light on the molecular mechanisms underlying treatment resistance. This study provides a multi-histotype proteomic landscape of EOC, advancing our knowledge for improved diagnosis and treatment strategies.
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Affiliation(s)
- Liujia Qian
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China
| | - Jianqing Zhu
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Zhangzhi Xue
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China
| | - Yan Zhou
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China
| | - Nan Xiang
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China
| | - Hong Xu
- MOE Key Laboratory of Biosystems Homeostasis and Protection, Institute of Biophysics, College of Life Science, Zhejiang University, Hangzhou, China
| | - Rui Sun
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China
| | - Wangang Gong
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Xue Cai
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China
| | - Lu Sun
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Weigang Ge
- Westlake Omics (Hangzhou) Biotechnology Co., Ltd., Hangzhou, Zhejiang Province, China
| | - Yufeng Liu
- MOE Key Laboratory of Biosystems Homeostasis and Protection, Institute of Biophysics, College of Life Science, Zhejiang University, Hangzhou, China
| | - Ying Su
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Wangmin Lin
- Westlake Omics (Hangzhou) Biotechnology Co., Ltd., Hangzhou, Zhejiang Province, China
| | - Yuecheng Zhan
- Westlake Omics (Hangzhou) Biotechnology Co., Ltd., Hangzhou, Zhejiang Province, China
| | - Junjian Wang
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Shuang Song
- MOE Key Laboratory of Biosystems Homeostasis and Protection, Institute of Biophysics, College of Life Science, Zhejiang University, Hangzhou, China
| | - Xiao Yi
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China
| | - Maowei Ni
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China
| | - Yi Zhu
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China.
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China.
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China.
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China.
| | - Yuejin Hua
- MOE Key Laboratory of Biosystems Homeostasis and Protection, Institute of Biophysics, College of Life Science, Zhejiang University, Hangzhou, China.
| | - Zhiguo Zheng
- Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China.
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, China.
| | - Tiannan Guo
- School of Medicine, Westlake University, Hangzhou, Zhejiang Province, China.
- Westlake Center for Intelligent Proteomics, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang Province, China.
- Research Center for Industries of the Future, School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China.
- Affiliated Hangzhou First People's Hospital, School of Medicine, Westlake University, Hangzhou, Zhejiang, China.
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Huang A, Sun Z, Hong H, Yang Y, Chen J, Gao Z, Gu J. Novel hypoxia- and lactate metabolism-related molecular subtyping and prognostic signature for colorectal cancer. J Transl Med 2024; 22:587. [PMID: 38902737 PMCID: PMC11191174 DOI: 10.1186/s12967-024-05391-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 06/12/2024] [Indexed: 06/22/2024] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is a serious global health burden because of its high morbidity and mortality rates. Hypoxia and massive lactate production are hallmarks of the CRC microenvironment. However, the effects of hypoxia and lactate metabolism on CRC have not been fully elucidated. This study aimed to develop a novel molecular subtyping based on hypoxia-related genes (HRGs) and lactate metabolism-related genes (LMRGs) and construct a signature to predict the prognosis of patients with CRC and treatment efficacy. METHODS Bulk and single-cell RNA-sequencing and clinical data of CRC were downloaded from the TCGA and GEO databases. HRGs and LMRGs were obtained from the Molecular Signatures Database. The R software package DESeq2 was used to perform differential expression analysis. Molecular subtyping was performed using unsupervised clustering. A predictive signature was developed using univariate Cox regression, random forest model, LASSO, and multivariate Cox regression analyses. Finally, the sensitivity of tumor cells to chemotherapeutic agents before and after hypoxia was verified using in vitro experiments. RESULTS We classified 575 patients with CRC into three molecular subtypes and were able to distinguish their prognoses clearly. The C1 subtype, which exhibits high levels of hypoxia, has a low proportion of CD8 + T cells and a high proportion of macrophages. The expression of immune checkpoint genes is generally elevated in C1 patients with severe immune dysfunction. Subsequently, we constructed a predictive model, the HLM score, which effectively predicts the prognosis of patients with CRC and the efficacy of immunotherapy. The HLM score was validated in GSE39582, GSE106584, GSE17536, and IMvigor210 datasets. Patients with high HLM scores exhibit high infiltration of CD8 + exhausted T cells (Tex), especially terminal Tex, and oxidative phosphorylation (OXPHOS)-Tex in the immune microenvironment. Finally, in vitro experiments confirmed that CRC cell lines were less sensitive to 5-fluorouracil, oxaliplatin, and irinotecan under hypoxic conditions. CONCLUSION We constructed novel hypoxia- and lactate metabolism-related molecular subtypes and revealed their immunological and genetic characteristics. We also developed an HLM scoring system that could be used to predict the prognosis and efficacy of immunotherapy in patients with CRC.
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Affiliation(s)
- An Huang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Haidian District, Beijing, 100142, China
| | - Zhuang Sun
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Haidian District, Beijing, 100142, China
| | - Haopeng Hong
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Haidian District, Beijing, 100142, China
| | - Yong Yang
- Department of Gastrointestinal Surgery, Peking University Shougang Hospital, Beijing, 100144, China
| | - Jiajia Chen
- Department of Gastrointestinal Surgery, Peking University Shougang Hospital, Beijing, 100144, China
| | - Zhaoya Gao
- Department of Gastrointestinal Surgery, Peking University Shougang Hospital, Beijing, 100144, China
- Department of General Surgery, Peking University First Hospital, Beijing, 100034, China
| | - Jin Gu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Haidian District, Beijing, 100142, China.
- Department of Gastrointestinal Surgery, Peking University Shougang Hospital, Beijing, 100144, China.
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4
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Wu H, Zeng C, Wu G, Fang F, Xiao C, Li L, Luo Y, Ouyang Z, Zhou C, Qian Y. Exosomal LRG1 promotes non-small cell lung cancer proliferation and metastasis by binding FN1 protein. Exp Cell Res 2024; 439:114097. [PMID: 38796135 DOI: 10.1016/j.yexcr.2024.114097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 05/13/2024] [Accepted: 05/19/2024] [Indexed: 05/28/2024]
Abstract
Leucine-rich α2-glycoprotein-1 (LRG1) is overexpressed in various cancers, including non-small cell lung cancer (NSCLC), but its role in NSCLC cell metastasis is not well understood. In this study, NSCLC cell exosomes were analyzed using different techniques, and the impact of exosomal LRG1 on NSCLC cell behavior was investigated through various assays both in vitro and in vivo. The study revealed that LRG1, found abundantly in NSCLC cells and exosomes, enhanced cell proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT). Exosomal LRG1 was shown to promote NSCLC cell metastasis in animal models. Additionally, the interaction between LRG1 and fibronectin 1 (FN1) in the cytoplasm was identified. It was observed that FN1 could counteract the effects of LRG1 knockdown on cell regulation induced by exosomes derived from NSCLC cells. Overall, the findings suggest that targeting exosomal LRG1 or FN1 may hold therapeutic potential for treating NSCLC.
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Affiliation(s)
- Hao Wu
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Chao Zeng
- Department of Thoracic Surgery, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Guodong Wu
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Fuyuan Fang
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Chunyang Xiao
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Liang Li
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China
| | - Yisheng Luo
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Zezhong Ouyang
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Chaochao Zhou
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
| | - Youhui Qian
- Department of Respiratory and Critical Care Medicine, Shenzhen Second People's Hospital, Shenzhen, 518035, China.
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5
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Gao M, Dong H, Jiang S, Chen F, Fu Y, Luo Y. Activated platelet-derived exosomal LRG1 promotes multiple myeloma cell growth. Oncogenesis 2024; 13:21. [PMID: 38871685 DOI: 10.1038/s41389-024-00522-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 05/28/2024] [Accepted: 06/03/2024] [Indexed: 06/15/2024] Open
Abstract
The hypercoagulable state is a hallmark for patients with multiple myeloma (MM) and is associated with disease progression. Activated platelets secrete exosomes and promote solid tumor growth. However, the role of platelet-derived exosomes in MM is not fully clear. We aim to study the underlying mechanism of how platelet-derived exosomes promote MM cell growth. Flow cytometry, Western blot, proteome analysis, co-immunoprecipitation, immunofluorescence staining, and NOD/SCID mouse subcutaneous transplantation model were performed to investigate the role of exosomal LRG1 on multiple myeloma cell growth. Peripheral blood platelets in MM patients were in a highly activated state, and platelet-rich plasma from MM patients significantly promoted cell proliferation and decreased apoptotic cells in U266 and RPMI8226 cells. Leucine-rich-alpha-2-glycoprotein 1 (LRG1) was significantly enriched in MM platelet-derived exosomes. Blocking LRG1 in recipient cells using LRG1 antibody could significantly eliminate the proliferation-promoting effect of platelet-derived exosomes on MM cells. And high exosomal LRG1 was associated with poor prognosis of patients with MM. Mechanistic studies revealed that LRG1 interacted with Olfactomedin 4 (OLFM4) to accelerate MM progression by activating the epithelial-to-mesenchymal transition (EMT) signaling pathway and promoting angiogenesis. Our results revealed that blocking LRG1 is a promising therapeutic strategy for the treatment of MM.
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Affiliation(s)
- Meng Gao
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Changsha, China
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hang Dong
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Siyi Jiang
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Fangping Chen
- Department of Hematology, The Third Xiangya Hospital, Central South University, Changsha, China.
| | - Yunfeng Fu
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Changsha, China.
| | - Yanwei Luo
- Department of Blood Transfusion, The Third Xiangya Hospital, Central South University, Changsha, China.
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Göbel A, Rachner TD, Hoffmann O, Klotz DM, Kasimir-Bauer S, Kimmig R, Hofbauer LC, Bittner AK. High serum levels of leucine-rich α-2 glycoprotein 1 (LRG-1) are associated with poor survival in patients with early breast cancer. Arch Gynecol Obstet 2024; 309:2789-2798. [PMID: 38413424 PMCID: PMC11147863 DOI: 10.1007/s00404-024-07434-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 02/14/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND Leucine-rich α-2 glycoprotein 1 (LRG-1) is a secreted glycoprotein that is mainly produced in the liver. Elevated levels of LRG-1 are found in a multitude of pathological conditions including eye diseases, diabetes, infections, autoimmune diseases, and cancer. In patients with early breast cancer (BC), high intratumoral LRG-1 protein expression levels are associated with reduced survival. In this study, we assessed serum levels of LRG-1 in patients with early BC and investigated its correlation with the presence of disseminated tumor cells (DTCs) in the bone marrow and survival outcomes. METHODS Serum LRG-1 levels of 509 BC patients were determined using ELISA and DTCs were assessed by immunocytochemistry using the pan-cytokeratin antibody A45-B/B3. We stratified LRG-1 levels according to selected clinical parameters. Using the log-rank (Mantel-Cox) test and multivariate Cox regression analysis, Kaplan-Meier survival curves and prognostic relevance were assessed. RESULTS Mean serum levels of LRG-1 were 29.70 ± 8.67 µg/ml. Age was positively correlated with LRG-1 expression (r = 0.19; p < 0.0001) and significantly higher LRG-1 levels were found in patients over 60 years compared to younger ones (30.49 ± 8.63 µg/ml vs. 28.85 ± 8.63 µg/ml; p = 0.011) and in postmenopausal patients compared to premenopausal patients (30.15 ± 8.34 µg/ml vs. 26.936.94 µg/ml; p = 0.002). Patients with no DTCs showed significantly elevated LRG-1 levels compared to the DTC-positive group (30.51 ± 8.69 µg/ml vs. 28.51 ± 8.54 µg/ml; p = 0.004). Overall and BC-specific survival was significantly lower in patients with high serum LRG-1 levels (above a cut-off of 33.63 µg/ml) compared to patients with lower LRG-1 levels during a mean follow-up of 8.5 years (24.8% vs. 11.1% BC-specific death; p = 0.0003; odds ratio 2.63, 95%CI: 1.56-4.36). Multivariate analyses revealed that LRG-1 is an independent prognostic marker for BC-specific survival (p = 0.001; hazard ratio 2.61). CONCLUSIONS This study highlights the potential of LRG-1 as an independent prognostic biomarker in patients with early BC.
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Affiliation(s)
- Andy Göbel
- Division of Endocrinology and Metabolic Bone Diseases, Department of Medicine III, Technische Universität Dresden, Dresden, Germany.
- Center for Healthy Ageing Department of Medicine III, Technische Universität Dresden, Dresden, Germany.
- German Cancer Consortium (DKTK), Dresden, Germany.
- German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Tilman D Rachner
- Division of Endocrinology and Metabolic Bone Diseases, Department of Medicine III, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Ageing Department of Medicine III, Technische Universität Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Oliver Hoffmann
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- National Center for Tumor Diseases (NCT), NCT West, Heidelberg, Germany
| | - Daniel Martin Klotz
- German Cancer Consortium (DKTK), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Gynecology and Obstetrics, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- National Center for Tumor Diseases (NCT), Dresden, Germany
- Helmholtz-Zentrum Dresden - Rossendorf (HZDR), Dresden, Germany
| | - Sabine Kasimir-Bauer
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- National Center for Tumor Diseases (NCT), NCT West, Heidelberg, Germany
| | - Rainer Kimmig
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- National Center for Tumor Diseases (NCT), NCT West, Heidelberg, Germany
| | - Lorenz C Hofbauer
- Division of Endocrinology and Metabolic Bone Diseases, Department of Medicine III, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Ageing Department of Medicine III, Technische Universität Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Dresden, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ann-Kathrin Bittner
- Department of Gynecology and Obstetrics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
- National Center for Tumor Diseases (NCT), NCT West, Heidelberg, Germany
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7
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Zindl CL, Wilson CG, Chadha AS, Duck LW, Cai B, Harbour SN, Nagaoka-Kamata Y, Hatton RD, Gao M, Figge DA, Weaver CT. Distal colonocytes targeted by C. rodentium recruit T-cell help for barrier defence. Nature 2024; 629:669-678. [PMID: 38600382 PMCID: PMC11096101 DOI: 10.1038/s41586-024-07288-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 03/08/2024] [Indexed: 04/12/2024]
Abstract
Interleukin 22 (IL-22) has a non-redundant role in immune defence of the intestinal barrier1-3. T cells, but not innate lymphoid cells, have an indispensable role in sustaining the IL-22 signalling that is required for the protection of colonic crypts against invasion during infection by the enteropathogen Citrobacter rodentium4 (Cr). However, the intestinal epithelial cell (IEC) subsets targeted by T cell-derived IL-22, and how T cell-derived IL-22 sustains activation in IECs, remain undefined. Here we identify a subset of absorptive IECs in the mid-distal colon that are specifically targeted by Cr and are differentially responsive to IL-22 signalling. Major histocompatibility complex class II (MHCII) expression by these colonocytes was required to elicit sustained IL-22 signalling from Cr-specific T cells, which was required to restrain Cr invasion. Our findings explain the basis for the regionalization of the host response to Cr and demonstrate that epithelial cells must elicit MHCII-dependent help from IL-22-producing T cells to orchestrate immune protection in the intestine.
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Affiliation(s)
- Carlene L Zindl
- Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - C Garrett Wilson
- Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Awalpreet S Chadha
- Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lennard W Duck
- Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Baiyi Cai
- Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Stacey N Harbour
- Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Yoshiko Nagaoka-Kamata
- Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Robin D Hatton
- Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Min Gao
- Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - David A Figge
- Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Casey T Weaver
- Department of Pathology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
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Dritsoula A, Camilli C, Moss SE, Greenwood J. The disruptive role of LRG1 on the vasculature and perivascular microenvironment. Front Cardiovasc Med 2024; 11:1386177. [PMID: 38745756 PMCID: PMC11091338 DOI: 10.3389/fcvm.2024.1386177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 04/17/2024] [Indexed: 05/16/2024] Open
Abstract
The establishment of new blood vessels, and their subsequent stabilization, is a critical process that facilitates tissue growth and organ development. Once established, vessels need to diversify to meet the specific needs of the local tissue and to maintain homeostasis. These processes are tightly regulated and fundamental to normal vessel and tissue function. The mechanisms that orchestrate angiogenesis and vessel maturation have been widely studied, with signaling crosstalk between endothelium and perivascular cells being identified as an essential component. In disease, however, new vessels develop abnormally, and existing vessels lose their specialization and function, which invariably contributes to disease progression. Despite considerable research into the vasculopathic mechanisms in disease, our knowledge remains incomplete. Accordingly, the identification of angiocrine and angiopathic molecules secreted by cells within the vascular microenvironment, and their effect on vessel behaviour, remains a major research objective. Over the last decade the secreted glycoprotein leucine-rich α-2 glycoprotein 1 (LRG1), has emerged as a significant vasculopathic molecule, stimulating defective angiogenesis, and destabilizing the existing vasculature mainly, but not uniquely, by altering both canonical and non-canonical TGF-β signaling in a highly cell and context dependent manner. Whilst LRG1 does not possess any overt homeostatic role in vessel development and maintenance, growing evidence provides a compelling case for LRG1 playing a pleiotropic role in disrupting the vasculature in many disease settings. Thus, LRG1 has now been reported to damage vessels in various disorders including cancer, diabetes, chronic kidney disease, ocular disease, and lung disease and the signaling processes that drive this dysfunction are being defined. Moreover, therapeutic targeting of LRG1 has been widely proposed to re-establish a quiescent endothelium and normalized vasculature. In this review, we consider the current status of our understanding of the role of LRG1 in vascular pathology, and its potential as a therapeutic target.
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Affiliation(s)
- Athina Dritsoula
- UCL Institute of Ophthalmology, University College London, London, United Kingdom
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9
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Paloschi V, Pauli J, Winski G, Wu Z, Li Z, Botti L, Meucci S, Conti P, Rogowitz F, Glukha N, Hummel N, Busch A, Chernogubova E, Jin H, Sachs N, Eckstein HH, Dueck A, Boon RA, Bausch AR, Maegdefessel L. Utilization of an Artery-on-a-Chip to Unravel Novel Regulators and Therapeutic Targets in Vascular Diseases. Adv Healthc Mater 2024; 13:e2302907. [PMID: 37797407 DOI: 10.1002/adhm.202302907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/18/2023] [Indexed: 10/07/2023]
Abstract
In this study, organ-on-chip technology is used to develop an in vitro model of medium-to-large size arteries, the artery-on-a-chip (AoC), with the objective to recapitulate the structure of the arterial wall and the relevant hemodynamic forces affecting luminal cells. AoCs exposed either to in vivo-like shear stress values or kept in static conditions are assessed to generate a panel of novel genes modulated by shear stress. Considering the crucial role played by shear stress alterations in carotid arteries affected by atherosclerosis (CAD) and abdominal aortic aneurysms (AAA) disease development/progression, a patient cohort of hemodynamically relevant specimens is utilized, consisting of diseased and non-diseased (internal control) vessel regions from the same patient. Genes activated by shear stress follow the same expression pattern in non-diseased segments of human vessels. Single cell RNA sequencing (scRNA-seq) enables to discriminate the unique cell subpopulations between non-diseased and diseased vessel portions, revealing an enrichment of flow activated genes in structural cells originating from non-diseased specimens. Furthermore, the AoC served as a platform for drug-testing. It reproduced the effects of a therapeutic agent (lenvatinib) previously used in preclinical AAA studies, therefore extending the understanding of its therapeutic effect through a multicellular structure.
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Affiliation(s)
- Valentina Paloschi
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 80336, Berlin, Germany
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 80336, Berlin, Germany
| | - Greg Winski
- Department of Medicine, Cardiovascular Unit, Karolinska Institute, 171 77, Stockholm, Sweden
| | - Zhiyuan Wu
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- Department of Vascular Surgery, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing, 10073, P. R. China
| | - Zhaolong Li
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Lorenzo Botti
- Department of Engineering and Applied Sciences, University of Bergamo, Bergamo, 24129, Italy
| | - Sandro Meucci
- Micronit Microtechnologies, Enschede, 15 7521, The Netherlands
| | - Pierangelo Conti
- Department of Engineering and Applied Sciences, University of Bergamo, Bergamo, 24129, Italy
| | | | - Nadiya Glukha
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Nora Hummel
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Albert Busch
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- Division of Vascular and Endovascular Surgery, Department for Visceral, Thoracic and Vascular Surgery, Medical Faculty Carl Gustav Carus and University Hospital, Technical University Dresden, 01069, Dresden, Germany
| | - Ekaterina Chernogubova
- Department of Medicine, Cardiovascular Unit, Karolinska Institute, 171 77, Stockholm, Sweden
| | - Hong Jin
- Department of Medicine, Cardiovascular Unit, Karolinska Institute, 171 77, Stockholm, Sweden
| | - Nadja Sachs
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Hans-Henning Eckstein
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Anne Dueck
- German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 80336, Berlin, Germany
- Institute of Pharmacology and Toxicology, Technical University of Munich, 80333, Munich, Germany
| | - Reinier A Boon
- Department of Physiology, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, 1081 HV, The Netherlands
- Institute of Cardiovascular Regeneration, Center of Molecular Medicine, Goethe-University, 60323, Frankfurt, Germany
- German Center for Cardiovascular Research DZHK, Partner Site Frankfurt Rhine-Main, 10785, Berlin, Germany
| | - Andreas R Bausch
- Department of Cellular Biophysics, Technical University of Munich, 80333, Munich, Germany
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 80336, Berlin, Germany
- Department of Medicine, Cardiovascular Unit, Karolinska Institute, 171 77, Stockholm, Sweden
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10
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Fu Z, Lai Y, Wang Q, Lin F, Fang J. LRG1 predicts the prognosis and is associated with immune infiltration in thyroid cancer: a bioinformatics study. Endocr Connect 2024; 13:e230418. [PMID: 37991216 PMCID: PMC10762566 DOI: 10.1530/ec-23-0418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 11/22/2023] [Indexed: 11/23/2023]
Abstract
Background The diagnostic and prognostic value of the leucine-rich alpha-2-glycoprotein 1 (LRG1) gene in thyroid cancer remains unclear. Using the Cancer Genome Atlas (TCGA) database, we conducted a bioinformatics analysis to determine the role of LRG1 in thyroid cancer. Methods Data from 512 patients with thyroid cancer and 59 normal individuals were collected from TCGA database. The Kruskal-Wallis test and logistic analysis were used to examine the relationship between LRG1 expression and clinicopathologic characteristics. Cox regression and Kaplan-Meier analysis were used to determine the predictive value of LRG1 on clinical outcomes. Single-sample gene set enrichment analysis (ssGSEA) was used to reveal associations between LRG1 expression and immune infiltration levels in thyroid cancer. Results LRG1 was highly expressed in thyroid cancer (P < 0.001) and could effectively distinguish tumor tissue (area under the curve = 0.875) from normal tissue. Moreover, LRG1 was significantly correlated with pathological N stage (odds ratio (OR) = 2.411 (1.659-3.505), P < 0.001). Kaplan-Meier survival analysis revealed that patients with high LRG1 expression had better overall survival (hazard ratio (HR) = 0.30, P = 0.038). Cox regression analysis indicated that pathological M stage was a risk factor for progression-free interval (HR = 5.964 (2.010-17.694), P < 0.001). Using ssGSEA, we found that LRG1 expression was positively correlated with the number of T helper 1 cells (R = 0.435, P < 0.001), dendritic cells (R = 0.442, P < 0.001), and macrophages (R = 0.459, P < 0.001). Conclusion LRG1 may be an important biomarker for predicting the prognosis of thyroid cancer and represent a suitable target for immunotherapy associated with immune infiltration.
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Affiliation(s)
- Zherui Fu
- Department of Emergency, The First People’s Hospital of Xiaoshan District, Xiaoshan Affiliated Hospital of Wenzhou Medical University, Hangzhou, Zhejiang, China
| | - Yi Lai
- Department of Emergency, The First People’s Hospital of Xiaoshan District, Xiaoshan Affiliated Hospital of Wenzhou Medical University, Hangzhou, Zhejiang, China
| | - Qianfei Wang
- Department of Emergency, The First People’s Hospital of Xiaoshan District, Xiaoshan Affiliated Hospital of Wenzhou Medical University, Hangzhou, Zhejiang, China
| | - Feng Lin
- Department of Orthopedics, The First People's Hospital of Xiaoshan District, Xiaoshan Affiliated Hospital of Wenzhou Medical University, Hangzhou, Zhejiang, China
| | - Jiaping Fang
- Department of Emergency, The First People’s Hospital of Xiaoshan District, Xiaoshan Affiliated Hospital of Wenzhou Medical University, Hangzhou, Zhejiang, China
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11
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Zhu Z, Guo Y, Liu Y, Ding R, Huang Z, Yu W, Cui L, Du P, Goel A, Liu C. ELK4 Promotes Colorectal Cancer Progression by Activating the Neoangiogenic Factor LRG1 in a Noncanonical SP1/3-Dependent Manner. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303378. [PMID: 37786278 PMCID: PMC10646254 DOI: 10.1002/advs.202303378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/08/2023] [Indexed: 10/04/2023]
Abstract
Although the MAPK/MEK/ERK pathway is prevalently activated in colorectal cancer (CRC), MEK/ERK inhibitors show limited efficiency in clinic. As a downstream target of MAPK, ELK4 is thought to work primarily by forming a complex with SRF. Whether ELK4 can serve as a potential therapeutic target is unclear and the transcriptional regulatory mechanism has not been systemically analyzed. Here, it is shown that ELK4 promotes CRC tumorigenesis. Integrated genomics- and proteomics-based approaches identified SP1 and SP3, instead of SRF, as cooperative functional partners of ELK4 at genome-wide level in CRC. Serum-induced phosphorylation of ELK4 by MAPKs facilitated its interaction with SP1/SP3. The pathological neoangiogenic factor LRG1 is identified as a direct target of the ELK4-SP1/SP3 complex. Furthermore, targeting the ELK4-SP1/SP3 complex by combination treatment with MEK/ERK inhibitor and the relatively specific SP1 inhibitor mithramycin A (MMA) elicited a synergistic antitumor effect on CRC. Clinically, ELK4 is a marker of poor prognosis in CRC. A 9-gene prognostic model based on the ELK4-SP1/3 complex-regulated gene set showed robust prognostic accuracy. The results demonstrate that ELK4 cooperates with SP1 and SP3 to transcriptionally regulate LRG1 to promote CRC tumorigenesis in an SRF-independent manner, identifying the ELK4-SP1/SP3 complex as a potential target for rational combination therapy.
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Affiliation(s)
- Zhehui Zhu
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
- Department of General SurgeryState Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghai200438China
| | - Yuegui Guo
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Yun Liu
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Rui Ding
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Zhenyu Huang
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Wei Yu
- Department of General SurgeryState Key Laboratory of Genetic EngineeringSchool of Life SciencesZhongshan HospitalFudan UniversityShanghai200438China
| | - Long Cui
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Peng Du
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
| | - Ajay Goel
- Center for Gastrointestinal ResearchBaylor Scott & White Research Institute and Charles A. Sammons Cancer CenterBaylor University Medical CenterDepartment of Molecular Diagnostics and Experimental TherapeuticsBeckman Research Institute of City of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Chen‐Ying Liu
- Department of Colorectal and Anal SurgeryShanghai Colorectal Cancer Research CenterXinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China
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12
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Zhang Q, Chen M, Xu F, Wu W, Luo X, Wang Y, Li J, Cui X, Tan Y, Li Z, Lin Y, Zhang H, Wang W. One-pot preparation of bi-functional POSS-based hybrid monolith via photo-initiated polymerization for isolation of extracellular vesicles. Anal Chim Acta 2023; 1279:341785. [PMID: 37827681 DOI: 10.1016/j.aca.2023.341785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 08/16/2023] [Accepted: 09/05/2023] [Indexed: 10/14/2023]
Abstract
Extracellular vesicles (EVs) are important participants in numerous pathophysiological processes, and could be used as valuable biomarkers to detect and monitor various diseases. However, facile EV isolation methods are the essential and preliminary issue for their downstream analysis and function investigation. In this work, a polyhedral oligomeric silsesquioxanes (POSS) based hybrid monolith combined metal affinity chromatography (MAC) and distearoyl phospholipid ethanolamine (DSPE) function was developed via photo-initiated thiol-ene polymerization. This synthesis process was facile, simple and convenient, and the obtained hybrid monolith could be applied to efficiently isolate EVs from bio-samples by taking advantages of the specific bond of Ti4+ and phosphate groups on the phospholipid membrane of EVs and the synergistic effect of DSPE insertion. Meanwhile, the eluted EVs could maintain their structural integrity and biological activity, suggesting they could be used for downstream application. Furthermore, 75 up-regulated proteins and 56 down-regulated proteins were identified by comparing the urinary EVs of colorectal cancer (CRC) patients and healthy donors, and these proteins might be used as potential biomarkers for early screening of CRC. These results demonstrated that this hybrid monolith could be used as a simple and convenient tool for isolating EVs from bio-samples and for wider applications in biomarker discovery.
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Affiliation(s)
- Qi Zhang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Mengxi Chen
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Fang Xu
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Wen Wu
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Xintong Luo
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Ying Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China; Taichang Liuhe People's Hospital, Suzhou, 215431, China
| | - Jiaxi Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Xuanhao Cui
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Yujia Tan
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Zhi Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Yujie Lin
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
| | - Haiyang Zhang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
| | - Weipeng Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China.
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13
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Kaçmaz M, Oğuzman H. The Leucine-Rich α2-Glycoprotein-1 Levels in Patients with Multiple Myeloma. Oncol Res Treat 2023; 46:415-423. [PMID: 37527638 DOI: 10.1159/000532042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/13/2023] [Indexed: 08/03/2023]
Abstract
INTRODUCTION Angiogenesis is considered important in the pathogenesis of multiple myeloma (MM), as well as in the targeted treatment of the disease. Leucine-rich α2-glycoprotein 1 (LRG1) is a protein that participates in angiogenesis and its effect on solid organ tumors has been investigated recently. This study aimed to investigate the relationship between MM and LRG1. METHODS The MM patients who admitted to Hatay Mustafa Kemal University Hematology Clinic between September 2021 and October 2022 were included in the study. The study consists of a total of 4 groups: newly diagnosed MM (NDMM), relapsed refractory MM (RRMM), MM in remission (Rem-MM), and control group. Demographic data were retrieved from hospital records. Blood samples of our study groups were centrifuged at 1,500 × g for 10 min and serum was collected. LRG1, IL-6, IL-8, TGF-β1, HIF-1α, FGF-2, and VEGF levels were analyzed in all groups by ELISA method, and statistical analysis was performed. RESULTS A total of 112 individuals, including NDMM (n: 27), RRMM (n: 18), Rem-MM (n: 42), and control group (n: 25), were enrolled in the study. Based on the analyses, the NDMM group exhibited significantly elevated levels of LRG1 (p < 0.001), TGF-1 (p < 0.001), and HIF-1α (p = 0.046, p < 0.001, and p = 0.003 compared to the RRMM, Rem-MM, and control groups, respectively) compared to the other groups. LRG1 levels were positively correlated with creatinine (r: 0.363, p = 0.001), calcium (r: 0.344, p = 0.001), total protein (r: 0.473, p < 0.001), erythrocyte sedimentation rate (r: 0.547, p < 0.001), lactate dehydrogenase (r: 0.321, p = 0.003), beta-2-microglobulin (r: 0.312, p = 0.017), IL-6 (r: 0.478, p < 0.001), IL-8 (r: 0.240, p = 0.03), TGF-β1 (r: 0.521, p < 0.001), and HIF-1α (r: 0.321, p = 0.003) levels and were negatively correlated with hemoglobin (r: -0.512, p < 0.001) and albumin (r: -0.549, p < 0.001) levels. Receiver operating characteristics (ROC) analysis revealed the association of LRG1 with the highest AUC value of 0.959 (95% CI: 0.904-1, p < 0.001) and the optimal cut-off value of 534.95 ng/mL (sensitivity: 93% and specificity: 99%) in the NDMM group compared to the control group. CONCLUSION In this study, providing data for the first time on LRG1 levels in the setting of MM. LRG1 levels were found to be significantly higher in NDMM patients and in our study discriminate this patient population from RRMM, Rem-MM, and normal controls. Therefore, LRG1 seems to a potential biomarker that should be evaluated in future studies addressing the diagnosis, staging, follow-up, prognosis, and treatment target of MM.
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Affiliation(s)
- Murat Kaçmaz
- Department of Hematology, Faculty of Medicine, Hatay Mustafa Kemal University, Antakya, Turkey
| | - Hamdi Oğuzman
- Department of Medical Biochemistry, Faculty of Medicine, Hatay Mustafa Kemal University, Antakya, Turkey
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14
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Alhammad R, Abu-Farha M, Rahman A, Thanaraj TA, Shaban L, Alsabah R, Hamad S, Hammad MM, Channanath A, Al-Mulla F, Abubaker J. LRG1 Associates with Iron Deficiency Anemia Markers in Adolescents. Nutrients 2023; 15:3100. [PMID: 37513518 PMCID: PMC10384480 DOI: 10.3390/nu15143100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/11/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023] Open
Abstract
Leucine-rich α-2 glycoprotein1 (LRG1) has been shown to be associated with several health conditions; however, its association with iron deficiency anemia, especially in children, has not been previously explored. In this study, we investigated the association between LRG1 and several iron deficiency anemia markers, including hemoglobin (Hb), albumin, red cell distribution width (RDW), iron, ferritin, and Hb transferrin saturation. A total of 431 participants were included in this analysis aged between 11 and 14 years. Higher LRG1 levels were observed in children diagnosed with anemia [31.1 (24.6, 43.2) µg/mL] compared to non-anemic children [29.2 (22.7-35.95) µg/mL]. Statistically significant differences of LRG1 level across the three groups (tertiles) of Hb, iron, transferrin saturation, albumin, RDW, ferritin, and WBC were observed. Strong negative correlations were observed between LRG1 and Hb (Spearman's rho = -0.11, p = 0.021), albumin (Spearman's rho = -0.24, p < 0.001), iron (Spearman's rho = -0.25, p < 0.001), and Hb transferrin saturation (Spearman's rho = -0.24, p < 0.001), whereas circulating LRG1 levels were positively associated with RDW (Spearman's rho = 0.21, p < 0.001). In conclusion, our findings demonstrate for the first time the strong association between iron deficiency anemia markers and LRG1 in otherwise healthy school-aged children. However, further studies are needed to corroborate those results and to look for similar associations in other population subgroups.
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Affiliation(s)
- Rashed Alhammad
- Department of Pharmacology, Faculty of Medicine, Kuwait University, Kuwait City 13110, Kuwait
| | - Mohamed Abu-Farha
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait
| | - Abdur Rahman
- Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Kuwait City 13110, Kuwait
| | - Thangavel Alphonse Thanaraj
- Department of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Kuwait City 13110, Kuwait
| | - Lemia Shaban
- Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Kuwait City 13110, Kuwait
| | - Reem Alsabah
- Department of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Kuwait City 13110, Kuwait
| | - Samar Hamad
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait
| | - Maha M Hammad
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait
| | - Arshad Channanath
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait
| | - Fahd Al-Mulla
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait
| | - Jehad Abubaker
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait
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Verathamjamras C, Chantaraamporn J, Sornprachum T, Mutapat P, Chokchaichamnankit D, Mingkwan K, Luevisadpibul V, Srisomsap C, Chutipongtanate S, Svasti J, Champattanachai V. Label-free quantitative proteomics reveals aberrant expression levels of LRG, C9, FN, A1AT and AGP1 in the plasma of patients with colorectal cancer. Clin Proteomics 2023; 20:15. [PMID: 37024778 PMCID: PMC10077704 DOI: 10.1186/s12014-023-09407-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 03/28/2023] [Indexed: 04/08/2023] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is one of the major causes of cancer-related death worldwide. Although commercial biomarkers of CRC are currently available, they are still lacking in terms of sensitivity and specificity; thus, searching for reliable blood-based biomarkers are important for the primary screening of CRC. METHODS Plasma samples of patients with non-metastatic (NM) and metastatic (M) CRC and healthy controls were fractionated using MARS-14 immunoaffinity chromatography. The flow-through and elute fractions representing low- and high-abundant proteins, respectively, were analyzed by label-free quantitative proteomics mass spectrometry. The functional analysis of the proteins with greater than 1.5-fold differential expression level between the CRC and the healthy control groups were analyzed for their biological processes and molecular functions. In addition, the levels of plasma proteins showing large alterations in CRC patients were confirmed by immunoblotting using two independent cohorts. Moreover, receiver operating characteristic (ROC) curve analysis was performed for individual and combinations of biomarker candidates so as to evaluate the diagnostic performance of biomarker candidates. RESULTS From 163 refined identifications, five proteins were up-regulated and two proteins were down-regulated in NM-CRC while eight proteins were up-regulated and three proteins were down-regulated in M-CRC, respectively. Altered plasma proteins in NM-CRC were mainly involved in complement activation, while those in M-CRC were clustered in acute-phase response, complement activation, and inflammatory response. Results from the study- and validation-cohorts indicate that the levels of leucine-rich alpha-2-glycoprotein-1(LRG), complement component C9 (C9), alpha-1-acid glycoprotein 1 (AGP1), and alpha-1-antitrypsin (A1AT) were statistically increased, while fibronectin (FN) level was statistically decreased in CRC patients compared to healthy controls, with most alterations found in a metastatic stage-dependent manner. ROC analysis revealed that FN exhibited the best diagnostic performance to discriminate CRC patients and healthy controls while AGP1 showed the best discrimination between the disease stages in both cohorts. The combined biomarker candidates, FN + A1AT + AGP1, exhibited perfect discriminatory power to discriminate between the CRC population and healthy controls whereas LRG + A1AT + AGP1 was likely to be the best panel to discriminate the metastatic stages in both cohorts. CONCLUSIONS This study identified and quantified distinct plasma proteome profiles of CRC patients. Selected CRC biomarker candidates including FN, LRG, C9, A1AT, and AGP1 may be further applied for screening larger cohorts including disease groups from other types of cancer or other diseases.
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Affiliation(s)
| | | | | | - Photsathorn Mutapat
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | | | - Kanokwan Mingkwan
- Division of Surgery, Sapphasitthiprasong Hospital, Ubon Ratchathani, Thailand
| | - Virat Luevisadpibul
- Division of Information and Technology, Ubonrak Thonburi Hospital, Ubon Ratchathani, Thailand
| | | | - Somchai Chutipongtanate
- Pediatric Translational Research Unit, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
- Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Jisnuson Svasti
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
- Applied Biological Science Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand
| | - Voraratt Champattanachai
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand.
- Applied Biological Science Program, Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok, Thailand.
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16
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Loch A, Tan KL, Danaee M, Idris I, Ng ML. Leucine-Rich Alpha-2-Glycoprotein: A Novel Predictor of Diastolic Dysfunction. Biomedicines 2023; 11:944. [PMID: 36979923 PMCID: PMC10045934 DOI: 10.3390/biomedicines11030944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/12/2023] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
Leucine-rich α2-glycoprotein (LRG1) mediates cardiac fibrocyte activation. It is upregulated in inflammatory conditions, atherosclerosis, and fibrosis. Diastolic dysfunction (DD) is due to myocardial fibrosis. This cross-sectional study examined the relationship between LRG1 and DD. Patients with symptoms of chronic coronary ischemia were recruited. Patients with symptoms of overt heart failure, ejection fraction (EF) < 55%, impaired renal function, infection, and recent trauma were excluded from the study. Clinical parameters examined were SYNergy between percutaneous coronary intervention with TAXus and cardiac surgery (SYNTAX) score, echocardiographic assessment, and LRG1 levels. Binary stepwise logistic regression was used to evaluate the association between LRG1 and DD. Receiver Operating Characteristic (ROC) analysis was used to determine optimal cut-off values and predictive performance of LRG1. A total of 94 patients were enrolled in the study, with 47 having a clinical diagnosis of DD. Plasma LRG1 was significantly (U = 417.00, p < 0.001) higher in the DD group (M = 14) compared to the No-DD group (M = 8) by Mann-Whitney U test. There were higher SYNTAX scores in the DD group (M = 24.5) compared with No-DD (M = 7). LRG1 had significant predictability of DD (OR = 1.32 (95% CI: 1.14-1.53)). The ROC showed an AUC = 0.89 (95% CI: 0.82-0.95). LRG1 had a 78% sensitivity (95% CI: 65.3-87.7) and 72.3% specificity (95% CI: 57.4-84.4) for predicting DD at a cut-off value of "9". In conclusion, we identified LRG1 as a novel independent predictor of DD. Further studies are warranted to validate the utility of LRG1 in predicting DD.
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Affiliation(s)
- Alexander Loch
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; (A.L.); (M.D.)
| | - Kok Leng Tan
- Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas 13200, Malaysia;
| | - Mahmoud Danaee
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia; (A.L.); (M.D.)
| | - Iskandar Idris
- Division of Medical Sciences and Graduate Entry Medicine, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK;
| | - Mei Li Ng
- Department of Medicine, National University of Singapore, Singapore 119228, Singapore
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17
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Zheng Z, Bian C, Wang H, Su J, Meng L, Xin Y, Jiang X. Prediction of immunotherapy efficacy and immunomodulatory role of hypoxia in colorectal cancer. Ther Adv Med Oncol 2022; 14:17588359221138383. [PMID: 36425871 PMCID: PMC9679351 DOI: 10.1177/17588359221138383] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 10/26/2022] [Indexed: 11/26/2023] Open
Abstract
Immunotherapy has been used in the clinical treatment of colorectal cancer (CRC); however, most patients fail to achieve satisfactory survival benefits. Biomarkers with high specificity and sensitivity are being increasingly developed to predict the efficacy of CRC immunotherapy. In addition to DNA alteration markers, such as microsatellite instability/mismatch repair and tumor mutational burden, immune cell infiltration and immune checkpoints (ICs), epigenetic changes and no-coding RNA, and gut microbiomes all show potential predictive ability. Recently, the hypoxic tumor microenvironment (TME) has been identified as a key factor mediating CRC immune evasion and resistance to treatment. Hypoxia-inducible factor-1α is the central transcription factor in the hypoxia response that drives the expression of a vast number of survival genes by binding to the hypoxia response element in cancer and immune cells in the TME. Hypoxia regulates angiogenesis, immune cell infiltration and activation, expression of ICs, and secretion of various immune molecules in the TME and is closely associated with the immunotherapeutic efficacy of CRC. Currently, various agents targeting hypoxia have been found to improve the TME and enhance the efficacy of immunotherapy. We reviewed current markers commonly used in CRC to predict therapeutic efficacy and the mechanisms underlying hypoxia-induced angiogenesis and tumor immune evasion. Exploring the mechanisms by which hypoxia affects the TME will assist the discovery of new immunotherapeutic predictive biomarkers and development of more effective combinations of agents targeting hypoxia and immunotherapy.
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Affiliation(s)
- Zhuangzhuang Zheng
- Department of Radiation Oncology, the First Hospital of Jilin University, Changchun China
- Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, Changchun, China
- NHC Key Laboratory of Radiobiology, School of Public Health of Jilin University, Changchun, China
| | - Chenbin Bian
- Department of Radiation Oncology, the First Hospital of Jilin University, Changchun China
- Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, Changchun, China
- NHC Key Laboratory of Radiobiology, School of Public Health of Jilin University, Changchun, China
| | - Huanhuan Wang
- Department of Radiation Oncology, the First Hospital of Jilin University, Changchun China
- Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, Changchun, China
- NHC Key Laboratory of Radiobiology, School of Public Health of Jilin University, Changchun, China
| | - Jing Su
- Department of Radiation Oncology, the First Hospital of Jilin University, Changchun China
- Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, Changchun, China
- NHC Key Laboratory of Radiobiology, School of Public Health of Jilin University, Changchun, China
| | - Lingbin Meng
- Department of Hematology and Medical Oncology, Moffitt Cancer Center, Tampa, FL, USA
| | - Ying Xin
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, 126 Xinmin Street, Changchun 130021, China
| | - Xin Jiang
- Department of Radiation Oncology, the First Hospital of Jilin University, 71 Xinmin Street, Changchun 130021, China
- Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, Changchun, China
- NHC Key Laboratory of Radiobiology, School of Public Health of Jilin University, Changchun, China
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18
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Identification of a 5-Hydroxymethylation Signature in Circulating Cell-Free DNA for the Noninvasive Detection of Colorectal Cancer. JOURNAL OF ONCOLOGY 2022; 2022:3798741. [PMID: 36276281 PMCID: PMC9581595 DOI: 10.1155/2022/3798741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/01/2022] [Accepted: 08/13/2022] [Indexed: 12/24/2022]
Abstract
Background As a crucial epigenetic modification, DNA 5-hydroxymethylcytosine (5-hmC) plays a key role during colorectal cancer (CRC) carcinogenesis. Nevertheless, the levels of 5-hmC-related genes in the circulating DNA of CRC remain largely unknown. Methods and Results The GSE81314 dataset from the Gene Expression Omnibus (GEO), which was generated by chemical marking-based low-input shotgun sequencing to detect 5-hmC in circulating cell-free DNA (cfDNA) was used in the present study. The GSE81314 dataset includes data for 8 plasma samples from healthy individuals and 4 plasma samples from CRC patients. The difference in the 5-hmC levels in cfDNA between the CRC group and healthy individuals was analyzed by the differentially expressed genes (DEG) package. Weighted gene coexpression network analysis (WGCNA) was conducted to analyze gene coexpression modules associated with sample characteristics. DEG analysis identified 19 upregulated and 9 downregulated 5-hmC-related genes. WGCNA showed that the pink, purple, and brown modules, which contain 531 genes in total, were significantly correlated with CRC (0.66, 0.61, and -0.59, respectively). We used gene set enrichment analysis (GSEA) software to compare 5-hmC-related genes and pathways between CRC patients and healthy controls. We further performed a protein–protein interaction (PPI) analysis and identified 4 nodes (LCN2, LRG1, S100P, and TACSTD2) that played key roles in the network, and we analyzed the expression of these nodes S100P in the GEPIA database. Consistent with the 5-hmC levels in CRC patient plasma, our external validation results from the GEPIA and UALCAN databases showed that LCN2, LRG1, S100P, and TACSTD2 were highly expressed in CRC tissue compared with controls. The DNA promoter methylation levels of LCN2, LRG1, and S100P were lower in CRC tissue than in normal control tissue. Conclusion The present findings suggest that abnormality in cell-free DNA hydroxylation in plasma may be associated with CRC. In addition, the 5-hmC levels of LCN2, LRG1, S100P, and TACSTD2 in circulating cfDNA may be used as potential noninvasive markers for CRC.
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19
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Guo Y, Wang M, Zou Y, Jin L, Zhao Z, Liu Q, Wang S, Li J. Mechanisms of chemotherapeutic resistance and the application of targeted nanoparticles for enhanced chemotherapy in colorectal cancer. J Nanobiotechnology 2022; 20:371. [PMID: 35953863 PMCID: PMC9367166 DOI: 10.1186/s12951-022-01586-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/04/2022] [Indexed: 11/10/2022] Open
Abstract
Colorectal cancer is considered one of the major malignancies that threaten the lives and health of people around the world. Patients with CRC are prone to post-operative local recurrence or metastasis, and some patients are advanced at the time of diagnosis and have no chance for complete surgical resection. These factors make chemotherapy an indispensable and important tool in treating CRC. However, the complex composition of the tumor microenvironment and the interaction of cellular and interstitial components constitute a tumor tissue with high cell density, dense extracellular matrix, and high osmotic pressure, inevitably preventing chemotherapeutic drugs from entering and acting on tumor cells. As a result, a novel drug carrier system with targeted nanoparticles has been applied to tumor therapy. It can change the physicochemical properties of drugs, facilitate the crossing of drug molecules through physiological and pathological tissue barriers, and increase the local concentration of nanomedicines at lesion sites. In addition to improving drug efficacy, targeted nanoparticles also reduce side effects, enabling safer and more effective disease diagnosis and treatment and improving bioavailability. In this review, we discuss the mechanisms by which infiltrating cells and other stromal components of the tumor microenvironment comprise barriers to chemotherapy in colorectal cancer. The research and application of targeted nanoparticles in CRC treatment are also classified.
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Affiliation(s)
- Yu Guo
- Department of the General Surgery, Jilin University Second Hospital, Changchun, 130000, China
| | - Min Wang
- Department of the General Surgery, Jilin University Second Hospital, Changchun, 130000, China
| | - Yongbo Zou
- Department of the General Surgery, Jilin University Second Hospital, Changchun, 130000, China
| | - Longhai Jin
- Department of Radiology, Jilin University Second Hospital, Changchun, 130000, China
| | - Zeyun Zhao
- Department of the General Surgery, Jilin University Second Hospital, Changchun, 130000, China
| | - Qi Liu
- Department of the General Surgery, Jilin University Second Hospital, Changchun, 130000, China
| | - Shuang Wang
- Department of the Dermatology, Jilin University Second Hospital, Changchun, 130000, China.
| | - Jiannan Li
- Department of the General Surgery, Jilin University Second Hospital, Changchun, 130000, China.
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20
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Alhammad R, Abu-Farha M, Hammad MM, Thanaraj TA, Channanath A, Alam-Eldin N, Al-Sabah R, Shaban L, Alduraywish A, Al-Mulla F, Rahman A, Abubaker J. Increased LRG1 Levels in Overweight and Obese Adolescents and Its Association with Obesity Markers, Including Leptin, Chemerin, and High Sensitivity C-Reactive Protein. Int J Mol Sci 2022; 23:ijms23158564. [PMID: 35955698 PMCID: PMC9369195 DOI: 10.3390/ijms23158564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/25/2022] [Accepted: 07/27/2022] [Indexed: 02/05/2023] Open
Abstract
Leucine-rich α-2 glycoprotein1 (LRG1) is a member of the leucine-rich repeat (LRR) family that is implicated in multiple diseases, including cancer, aging, and heart failure, as well as diabetes and obesity. LRG1 plays a key role in diet-induced hepatosteatosis and insulin resistance by mediating the crosstalk between adipocytes and hepatocytes. LRG1 also promotes hepatosteatosis by upregulating de novo lipogenesis in the liver and suppressing fatty acid β-oxidation. In this study, we investigated the association of LRG1 with obesity markers, including leptin and other adipokines in adolescents (11−14 years; n = 425). BMI-for-age classification based on WHO growth charts was used to define obesity. Plasma LRG1 was measured by ELISA, while other markers were measured by multiplexing assay. Median (IQR) of LRG1 levels was higher in obese (30 (25, 38) µg/mL) and overweight (30 (24, 39) µg/mL) adolescents, compared to normal-weight participants (27 (22, 35) µg/mL). The highest tertile of LRG1 had an OR [95% CI] of 2.55 [1.44, 4.53] for obesity. LRG1 was positively correlated to plasma levels of high sensitivity c-reactive protein (HsCRP) (ρ = 0.2), leptin (ρ = 0.2), and chemerin (ρ = 0.24) with p < 0.001. Additionally, it was positively associated with plasma level of IL6 (ρ = 0.17) and IL10 (ρ = 0.14) but not TNF-α. In conclusion, LRG1 levels are increased in obese adolescents and are associated with increased levels of adipogenic markers. These results suggest the usefulness of LRG1 as an early biomarker for obesity and its related pathologies in adolescents.
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Affiliation(s)
- Rashed Alhammad
- Department of Pharmacology, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait;
| | - Mohamed Abu-Farha
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (M.A.-F.); (M.M.H.); (N.A.-E.)
| | - Maha M. Hammad
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (M.A.-F.); (M.M.H.); (N.A.-E.)
| | - Thangavel Alphonse Thanaraj
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (T.A.T.); (A.C.); (F.A.-M.)
| | - Arshad Channanath
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (T.A.T.); (A.C.); (F.A.-M.)
| | - Nada Alam-Eldin
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (M.A.-F.); (M.M.H.); (N.A.-E.)
| | - Reem Al-Sabah
- Department of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait;
| | - Lemia Shaban
- Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Safat 13060, Kuwait;
| | - Abdulrahman Alduraywish
- Department of Internal Medicine, College of Medicine, Jouf University, Sakaka 72388, Saudi Arabia;
| | - Fahd Al-Mulla
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (T.A.T.); (A.C.); (F.A.-M.)
| | - Abdur Rahman
- Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Safat 13060, Kuwait;
- Correspondence: (A.R.); (J.A.); Tel.: +965-2463-3321 (A.R.); +965-2224-2999 (ext. 3563) (J.A.)
| | - Jehad Abubaker
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (M.A.-F.); (M.M.H.); (N.A.-E.)
- Correspondence: (A.R.); (J.A.); Tel.: +965-2463-3321 (A.R.); +965-2224-2999 (ext. 3563) (J.A.)
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21
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Downregulation of LRRC19 Is Associated with Poor Prognosis in Colorectal Cancer. JOURNAL OF ONCOLOGY 2022; 2022:5848823. [PMID: 35794979 PMCID: PMC9251150 DOI: 10.1155/2022/5848823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/25/2022] [Indexed: 11/18/2022]
Abstract
Objective. Colorectal cancer (CRC) is globally one of the most often diagnosed cancers with high mortality rates. This study aimed to explore novel biomarkers for the diagnosis and prognosis of CRC. Methods. We collected 4 datasets about CRC in GEO and sought differentially expressed genes (DEGs) with GEO2R. Leucine-rich repeat-containing protein 19 (LRRC19) expression was assessed through the Oncomine and TIMER database analyses, which was further confirmed by qRT-PCR of CRC samples. We used online survival analysis tools (GEPIA, PrognoScan, and Kaplan–Meier plotter) to examine the prognostic value of LRRC19 in CRC and other malignancies. GO and KEGG enrichment analyses were employed to explore the biological functions of LRRC19. Finally, we conducted network prediction by STRING and further validation on the GEPIA to discover other molecules that might interact with LRRC19. Results. A total of 21 upregulated and 46 downregulated DEGs were identified from the 4 datasets. The TIMER and Oncomine online analyses showed lower mRNA of LRRC19 in CRC tissues compared with adjacent normal tissues, which was validated by qRT-PCR in CRC patient samples. The survival analysis through the GEPIA and PrognoScan websites revealed that low LRRC19 expression was significantly correlated with poor prognosis in CRC patients. The Kaplan–Meier plotter survival analysis indicated that low LRRC19 expression was significantly associated with the disease progression of patients with ovarian cancer, gastric cancer, breast cancer, and lung cancer. The enrichment analysis suggested that low expression of LRRC19 could be involved in the retinol metabolism and the zymogen granule membrane. Through STRING and GEPIA, it was found that LRRC19 is clearly associated with ZCCHC10, MOB3B, IMMP2L, and TRMT11. Conclusion. LRRC19 mRNA was prominently decreased in human CRC tissues and was significantly associated with shorter survival in CRC patients. LRRC19 might serve as a possible target for early diagnosis and prognosis assessment in CRC.
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22
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LRG1 mediated by ATF3 promotes growth and angiogenesis of gastric cancer by regulating the SRC/STAT3/VEGFA pathway. Gastric Cancer 2022; 25:527-541. [PMID: 35094168 DOI: 10.1007/s10120-022-01279-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/15/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Increasing evidence indicates that leucine-rich-alpha-2-glycoprotein 1 (LRG1) is associated with multiple malignancies, but whether it participates in gastric cancer (GC) angiogenesis remains unclear. METHODS The expression levels of LRG1 were assessed in GC samples. Endothelial tube formation analysis, HUVEC migration assay, chorioallantoic membrane assay (CAM), and xenograft tumor model were used to investigate the effect of LRG1 on angiogenesis in gastric cancer. The involvement of activating transcription factor 3 (ATF3) was analyzed by chromatin immunoprecipitation (ChIP) and dual-luciferase reporter assay. Western blot and enzyme-linked immunosorbent assay were performed to measure the SRC/STAT3/VEGFA pathway. RESULTS LRG1 was overexpressed in GC tissues and associated with cancer angiogenesis. In addition, LRG1 markedly promoted GC cell proliferation in vitro and in vivo. Moreover, overexpression of LRG1 could stimulate GC angiogenesis in vitro and in vivo. Then, we identified ATF3 promotes the transcription of LRG1 and is a positive regulator of angiogenesis. Additionally, LRG1 could activate VEGFA expression via the SRC/STAT3/ VEGFA pathway in GC cells, thus contributing to the angiogenesis of GC. CONCLUSIONS The present study suggests LRG1 plays a crucial role in the regulation of angiogenesis in GC and could be a potential therapeutic target for GC.
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23
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Frudd K, Sivaprasad S, Raman R, Krishnakumar S, Revathy YR, Turowski P. Diagnostic circulating biomarkers to detect vision-threatening diabetic retinopathy: Potential screening tool of the future? Acta Ophthalmol 2022; 100:e648-e668. [PMID: 34269526 DOI: 10.1111/aos.14954] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 06/02/2021] [Accepted: 06/17/2021] [Indexed: 12/12/2022]
Abstract
With the increasing prevalence of diabetes in developing and developed countries, the socio-economic burden of diabetic retinopathy (DR), the leading complication of diabetes, is growing. Diabetic retinopathy (DR) is currently one of the leading causes of blindness in working-age adults worldwide. Robust methodologies exist to detect and monitor DR; however, these rely on specialist imaging techniques and qualified practitioners. This makes detecting and monitoring DR expensive and time-consuming, which is particularly problematic in developing countries where many patients will be remote and have little contact with specialist medical centres. Diabetic retinopathy (DR) is largely asymptomatic until late in the pathology. Therefore, early identification and stratification of vision-threatening DR (VTDR) is highly desirable and will ameliorate the global impact of this disease. A simple, reliable and more cost-effective test would greatly assist in decreasing the burden of DR around the world. Here, we evaluate and review data on circulating protein biomarkers, which have been verified in the context of DR. We also discuss the challenges and developments necessary to translate these promising data into clinically useful assays, to detect VTDR, and their potential integration into simple point-of-care testing devices.
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Affiliation(s)
- Karen Frudd
- Institute of Ophthalmology University College London London UK
| | - Sobha Sivaprasad
- Institute of Ophthalmology University College London London UK
- NIHR Moorfields Biomedical Research Centre Moorfields Eye Hospital London UK
| | - Rajiv Raman
- Vision Research Foundation Sankara Nethralaya Chennai Tamil Nadu India
| | | | | | - Patric Turowski
- Institute of Ophthalmology University College London London UK
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24
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Yin GN, Kim DK, Kang JI, Im Y, Lee DS, Han AR, Ock J, Choi MJ, Kwon MH, Limanjaya A, Jung SB, Yang J, Min KW, Yun J, Koh Y, Park JE, Hwang D, Suh JK, Ryu JK, Kim HM. Latrophilin-2 is a novel receptor of LRG1 that rescues vascular and neurological abnormalities and restores diabetic erectile function. Exp Mol Med 2022; 54:626-638. [PMID: 35562586 PMCID: PMC9166773 DOI: 10.1038/s12276-022-00773-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/07/2022] [Accepted: 02/20/2022] [Indexed: 12/19/2022] Open
Abstract
Diabetes mellitus (DM) is a chronic metabolic disorder characterized by inappropriate hyperglycemia, which causes endothelial dysfunction and peripheral neuropathy, ultimately leading to multiple complications. One prevalent complication is diabetic erectile dysfunction (ED), which is more severe and more resistant to treatment than nondiabetic ED. The serum glycoprotein leucine-rich ɑ-2-glycoprotein 1 (LRG1) is a modulator of TGF-β-mediated angiogenesis and has been proposed as a biomarker for a variety of diseases, including DM. Here, we found that the adhesion GPCR latrophilin-2 (LPHN2) is a TGF-β-independent receptor of LRG1. By interacting with LPHN2, LRG1 promotes both angiogenic and neurotrophic processes in mouse tissue explants under hyperglycemic conditions. Preclinical studies in a diabetic ED mouse model showed that LRG1 administration into the penile tissue, which exhibits significantly increased LPHN2 expression, fully restores erectile function by rescuing vascular and neurological abnormalities. Further investigations revealed that PI3K, AKT, and NF-κB p65 constitute the key intracellular signaling pathway of the LRG1/LPHN2 axis, providing important mechanistic insights into LRG1-mediated angiogenesis and nerve regeneration in DM. Our findings suggest that LRG1 can be a potential new therapeutic option for treating aberrant peripheral blood vessels and neuropathy associated with diabetic complications, such as diabetic ED.
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Affiliation(s)
- Guo Nan Yin
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, 22332, Republic of Korea
| | - Do-Kyun Kim
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan, 54596, Republic of Korea
| | - Ji In Kang
- Graduate School of Medical Science & Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Yebin Im
- School of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dong Sun Lee
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
| | - Ah-Reum Han
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
| | - Jiyeon Ock
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, 22332, Republic of Korea
| | - Min-Ji Choi
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, 22332, Republic of Korea
| | - Mi-Hye Kwon
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, 22332, Republic of Korea
| | - Anita Limanjaya
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, 22332, Republic of Korea
| | - Saet-Byel Jung
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
| | - Jimin Yang
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
| | - Kwang Wook Min
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea
| | - Jeongwon Yun
- Graduate School of Medical Science & Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Yongjun Koh
- Graduate School of Medical Science & Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Jong-Eun Park
- Graduate School of Medical Science & Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Daehee Hwang
- School of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jun-Kyu Suh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, 22332, Republic of Korea.
| | - Ji-Kan Ryu
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, 22332, Republic of Korea.
| | - Ho Min Kim
- Center for Biomolecular and Cellular Structure, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea.
- Graduate School of Medical Science & Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
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25
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Ho CK, Zheng D, Sun J, Wen D, Wu S, Yu L, Gao Y, Zhang Y, Li Q. LRG-1 promotes fat graft survival through the RAB31-mediated inhibition of hypoxia-induced apoptosis. J Cell Mol Med 2022; 26:3153-3168. [PMID: 35322540 PMCID: PMC9170820 DOI: 10.1111/jcmm.17280] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 02/10/2022] [Accepted: 02/19/2022] [Indexed: 11/29/2022] Open
Abstract
Autologous adipose tissue is an ideal soft tissue filling material, and its biocompatibility is better than that of artificial tissue substitutes, foreign bodies and heterogeneous materials. Although autologous fat transplantation has many advantages, the low retention rate of adipose tissue limits its clinical application. Here, we identified a secretory glycoprotein, leucine‐rich‐alpha‐2‐glycoprotein 1 (LRG‐1), that could promote fat graft survival through RAB31‐mediated inhibition of hypoxia‐induced apoptosis. We showed that LRG‐1 injection significantly increased the maintenance of fat volume and weight compared with the control. In addition, higher fat integrity, more viable adipocytes and fewer apoptotic cells were observed in the LRG‐1‐treated groups. Furthermore, we discovered that LRG‐1 could reduce the ADSC apoptosis induced by hypoxic conditions. The mechanism underlying the LRG‐1‐mediated suppression of the ADSC apoptosis induced by hypoxia was mediated by the upregulation of RAB31 expression. Using LRG‐1 for fat grafts may prove to be clinically successful for increasing the retention rate of transplanted fat.
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Affiliation(s)
- Chia-Kang Ho
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Danning Zheng
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jiaming Sun
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Dongsheng Wen
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Shan Wu
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Li Yu
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ya Gao
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yifan Zhang
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Qingfeng Li
- Department of Plastic & Reconstructive Surgery, School of Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
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Dritsoula A, Dowsett L, Pilotti C, O'Connor MN, Moss SE, Greenwood J. Angiopathic activity of LRG1 is induced by the IL-6/STAT3 pathway. Sci Rep 2022; 12:4867. [PMID: 35318338 PMCID: PMC8938720 DOI: 10.1038/s41598-022-08516-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 03/07/2022] [Indexed: 12/14/2022] Open
Abstract
Leucine-rich α-2-glycoprotein 1 (LRG1) is a secreted glycoprotein that under physiological conditions is produced predominantly by the liver. In disease, its local induction promotes pathogenic neovascularisation while its inhibition leads to reduced dysfunctional angiogenesis. Here we examine the role of interleukin-6 (IL-6) in defective angiogenesis mediated by LRG1. IL-6 treatment induced LRG1 expression in endothelial cells and ex vivo angiogenesis cultures and promoted vascular growth with reduced mural cell coverage. In Lrg1-/- explants, however, IL-6 failed to stimulate angiogenesis and vessels exhibited improved mural cell coverage. IL-6 activated LRG1 transcription through the phosphorylation and binding of STAT3 to a conserved consensus site in the LRG1 promoter, the deletion of which abolished activation. Blocking IL-6 signalling in human lung endothelial cells, using the anti-IL6 receptor antibody Tocilizumab, significantly reduced LRG1 expression. Our data demonstrate that IL-6, through STAT3 phosphorylation, activates LRG1 transcription resulting in vascular destabilisation. This observation is especially timely in light of the potential role of IL-6 in COVID-19 patients with severe pulmonary microvascular complications, where targeting IL-6 has been beneficial. However, our data suggest that a therapy directed towards blocking the downstream angiopathic effector molecule LRG1 may be of greater utility.
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Affiliation(s)
- Athina Dritsoula
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK.
| | - Laura Dowsett
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Camilla Pilotti
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Marie N O'Connor
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Stephen E Moss
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
| | - John Greenwood
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
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Yang P, Li S, Zhang H, Ding X, Tan Q. LRG1 Accelerates Wound Healing in Diabetic Rats by Promoting Angiogenesis via the Wnt/β-Catenin Signaling Pathway. INT J LOW EXTR WOUND 2022:15347346221081610. [PMID: 35188432 DOI: 10.1177/15347346221081610] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Patients with diabetic wounds may end with lower extremity amputation or death. Leucine-rich α-2-glycoprotein 1 (LRG1) is an effective regulator of angiogenesis and essential for timely wound healing. However, its role in regulating angiogenesis in diabetic wounds remains unclear. This study aimed to investigate the pro-angiogenic function of exogenous LRG1 in diabetic wound healing and explore possible mechanisms. LRG1 expression patterns following injury in normal and diabetic wounds were determined by western blotting. Local injection of LRG1 was used to verify the effects on angiogenesis and wound healing in diabetic rats. Immunohistochemical staining for CD31 was used to analyze the vessel density. Human umbilical vein endothelial cells (HUVECs) cultured in hyperglycemia were used to explore how LRG1 promotes angiogenesis in diabetic wound healing. We found that the expression peak of LRG1 around the wounds was delayed in diabetic rats compared with that in normal rats. Exogenous administration of LRG1 significantly accelerated the wound closure rate and promoted angiogenesis in diabetic rats. In addition, exogenous LRG1 effectively restored the proliferation, migration, and tube formation ability of HUVECs under hyperglycemia. Mechanistically, LRG1 promoted angiogenesis and diabetic wound healing mainly by activating the Wnt/β-catenin pathway, which is inhibited in diabetic wounds. This research suggests that LRG1 promotes angiogenesis and wound closure in diabetic rats by improving angiogenesis via activation of the Wnt/β-catenin pathway. Hence, LRG1 may be a possible therapeutic strategy for diabetic foot treatment.
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Affiliation(s)
- Ping Yang
- Department of Burns and Plastic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
- Department of Burns and Plastic Surgery, Anqing Shihua Hosital of Nanjing Drum Tower Hospital Group, Anqing, Anhui, China
| | - Shiyan Li
- Department of Burns and Plastic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
- Department of Burns and Plastic Surgery, Anqing Shihua Hosital of Nanjing Drum Tower Hospital Group, Anqing, Anhui, China
| | - Hao Zhang
- Department of Burns and Plastic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Xiaofeng Ding
- Department of Burns and Plastic Surgery, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Qian Tan
- Department of Burns and Plastic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
- Department of Burns and Plastic Surgery, Anqing Shihua Hosital of Nanjing Drum Tower Hospital Group, Anqing, Anhui, China
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Xu J, Yu X, Ye H, Gao S, Deng N, Lu Y, Lin H, Zhang Y, Lu D. Comparative Metabolomics and Proteomics Reveal Vibrio parahaemolyticus Targets Hypoxia-Related Signaling Pathways of Takifugu obscurus. Front Immunol 2022; 12:825358. [PMID: 35095928 PMCID: PMC8793131 DOI: 10.3389/fimmu.2021.825358] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 12/23/2021] [Indexed: 12/14/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) raises the issue of how hypoxia destroys normal physiological function and host immunity against pathogens. However, there are few or no comprehensive omics studies on this effect. From an evolutionary perspective, animals living in complex and changeable marine environments might develop signaling pathways to address bacterial threats under hypoxia. In this study, the ancient genomic model animal Takifugu obscurus and widespread Vibrio parahaemolyticus were utilized to study the effect. T. obscurus was challenged by V. parahaemolyticus or (and) exposed to hypoxia. The effects of hypoxia and infection were identified, and a theoretical model of the host critical signaling pathway in response to hypoxia and infection was defined by methods of comparative metabolomics and proteomics on the entire liver. The changing trends of some differential metabolites and proteins under hypoxia, infection or double stressors were consistent. The model includes transforming growth factor-β1 (TGF-β1), hypoxia-inducible factor-1α (HIF-1α), and epidermal growth factor (EGF) signaling pathways, and the consistent changing trends indicated that the host liver tended toward cell proliferation. Hypoxia and infection caused tissue damage and fibrosis in the portal area of the liver, which may be related to TGF-β1 signal transduction. We propose that LRG (leucine-rich alpha-2-glycoprotein) is widely involved in the transition of the TGF-β1/Smad signaling pathway in response to hypoxia and pathogenic infection in vertebrates as a conserved molecule.
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Affiliation(s)
- Jiachang Xu
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China
| | - Xue Yu
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China
| | - Hangyu Ye
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China
| | - Songze Gao
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China
| | - Niuniu Deng
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China
| | - Yuyou Lu
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China
| | - Haoran Lin
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,College of Ocean, Hainan University, Haikou, China
| | - Yong Zhang
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China
| | - Danqi Lu
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou, China
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De Rossi G, Da Vitoria Lobo ME, Greenwood J, Moss SE. LRG1 as a novel therapeutic target in eye disease. Eye (Lond) 2022; 36:328-340. [PMID: 34987199 PMCID: PMC8807626 DOI: 10.1038/s41433-021-01807-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 09/22/2021] [Accepted: 10/01/2021] [Indexed: 02/08/2023] Open
Abstract
Retinal and choroidal diseases are major causes of blindness and visual impairment in the developed world and on the rise due to an ageing population and diabetes epidemic. Standard of care is centred around blockade of vascular endothelial growth factor (VEGF), but despite having halved the number of patients losing sight, a high rate of patient non-response and loss of efficacy over time are key challenges. Dysregulation of vascular homoeostasis, coupled with fibrosis and inflammation, are major culprits driving sight-threatening eye diseases. Improving our knowledge of these pathological processes should inform the development of new drugs to address the current clinical challenges for patients. Leucine-rich α-2 glycoprotein 1 (LRG1) is an emerging key player in vascular dysfunction, inflammation and fibrosis. Under physiological conditions, LRG1 is constitutively expressed by the liver and granulocytes, but little is known about its normal biological function. In pathological scenarios, such as diabetic retinopathy (DR) and neovascular age-related macular degeneration (nvAMD), its expression is ectopically upregulated and it acquires a much better understood pathogenic role. Context-dependent modulation of the transforming growth-factor β (TGFβ) pathway is one of the main activities of LRG1, but additional roles have recently been emerging. This review aims to highlight the clinical and pre-clinical evidence for the pathogenic contribution of LRG1 to vascular retinopathies, as well as extrapolate from other diseases, functions which may be relevant to eye disease. Finally, we will provide a current update on the development of anti-LRG1 therapies for the treatment of nvAMD.
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Affiliation(s)
- Giulia De Rossi
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK.
| | | | - John Greenwood
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Stephen E Moss
- Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
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30
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Cai D, Chen C, Su Y, Tan Y, Lin X, Xing R. LRG1 in pancreatic cancer cells promotes inflammatory factor synthesis and the angiogenesis of HUVECs by activating VEGFR signaling. J Gastrointest Oncol 2022; 13:400-412. [PMID: 35284128 PMCID: PMC8899736 DOI: 10.21037/jgo-21-910] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/30/2022] [Indexed: 08/23/2024] Open
Abstract
BACKGROUND This study aimed to investigate the roles of leucine-rich alpha-2-glycoprotein 1 (LRG1) in regulating angiogenesis during pancreatic cancer (PC) pathogenesis. METHODS LRG1 expression in tissues was detected by qRT-PCR and immunohistochemistry. LRG1 in BxPC-3 and Capan-2 cells was knocked down or overexpressed. Cell viability and the migration and invasion abilities of cells were analyzed using the Cell Counting Kit-8 (CCK-8) assay and Transwell system, respectively. Interleukin-1 beta (IL-1β), IL-18, and vascular endothelial growth factor A (VEGFA) contents in cell culture were measured by ELISA, and the angiogenesis of HUVECs was assessed by the in vitro tube formation assay. In vitro LRG1 expression in BxPC-3 and Capan-2 cells was determined using immunofluorescence. RESULTS The results showed that LRG1 expression was significantly increased in pancreatic cancer tissues and cell lines. LRG1 knockdown inhibited the viability, migration, invasion, and IL-1β and IL-18 synthesis of BxPC-3 and Capan-2 cells. VEGFA synthesis in BxPC-3 and Capan-2 cells was also inhibited by LRG1 knockdown, which caused impaired tube formation of co-cultured HUVECs. LRG1 overexpression enhanced the viability, migration, and invasion of BxPC-3 and Capan-2 cells, also causing elevated tube formation of HUVECs and IL-1β and IL-18 synthesis in co-cultures of HUVECs and BxPC-3 or Capan-2 cells. Silencing of VEGF receptor (VEGFR) abrogated the enhanced tube formation and IL-1β and IL-18 synthesis in HUVECs co-cultured with BxPC-3 or Capan-2 cells overexpressing LRG1. CONCLUSIONS In conclusion, LRG1, which is highly expressed in pancreatic cancer cells, promotes inflammatory factor synthesis and the angiogenesis of HUVECs though activating the VEGFR signaling pathway.
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Affiliation(s)
- Duxiong Cai
- Department of Gastroenterology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Chunji Chen
- Department of Pathology, Hainan Provincial People’s Hospital, Haikou, China
| | - Yexiong Su
- Department of Gastroenterology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yan Tan
- Department of Gastroenterology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Xuyue Lin
- Department of Gastroenterology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Rong Xing
- Department of Gastroenterology, The First Affiliated Hospital of Hainan Medical University, Haikou, China
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31
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LRG1 expression reduced inflammation of sepsis-renal injury via activation of NLRP3 inflammasome by HIF-1 alpha. Mol Cell Toxicol 2022. [DOI: 10.1007/s13273-021-00214-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Camilli C, Hoeh AE, De Rossi G, Moss SE, Greenwood J. LRG1: an emerging player in disease pathogenesis. J Biomed Sci 2022; 29:6. [PMID: 35062948 PMCID: PMC8781713 DOI: 10.1186/s12929-022-00790-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 01/11/2022] [Indexed: 12/15/2022] Open
Abstract
The secreted glycoprotein leucine-rich α-2 glycoprotein 1 (LRG1) was first described as a key player in pathogenic ocular neovascularization almost a decade ago. Since then, an increasing number of publications have reported the involvement of LRG1 in multiple human conditions including cancer, diabetes, cardiovascular disease, neurological disease, and inflammatory disorders. The purpose of this review is to provide, for the first time, a comprehensive overview of the LRG1 literature considering its role in health and disease. Although LRG1 is constitutively expressed by hepatocytes and neutrophils, Lrg1-/- mice show no overt phenotypic abnormality suggesting that LRG1 is essentially redundant in development and homeostasis. However, emerging data are challenging this view by suggesting a novel role for LRG1 in innate immunity and preservation of tissue integrity. While our understanding of beneficial LRG1 functions in physiology remains limited, a consistent body of evidence shows that, in response to various inflammatory stimuli, LRG1 expression is induced and directly contributes to disease pathogenesis. Its potential role as a biomarker for the diagnosis, prognosis and monitoring of multiple conditions is widely discussed while dissecting the mechanisms underlying LRG1 pathogenic functions. Emphasis is given to the role that LRG1 plays as a vasculopathic factor where it disrupts the cellular interactions normally required for the formation and maintenance of mature vessels, thereby indirectly contributing to the establishment of a highly hypoxic and immunosuppressive microenvironment. In addition, LRG1 has also been reported to affect other cell types (including epithelial, immune, mesenchymal and cancer cells) mostly by modulating the TGFβ signalling pathway in a context-dependent manner. Crucially, animal studies have shown that LRG1 inhibition, through gene deletion or a function-blocking antibody, is sufficient to attenuate disease progression. In view of this, and taking into consideration its role as an upstream modifier of TGFβ signalling, LRG1 is suggested as a potentially important therapeutic target. While further investigations are needed to fill gaps in our current understanding of LRG1 function, the studies reviewed here confirm LRG1 as a pleiotropic and pathogenic signalling molecule providing a strong rationale for its use in the clinic as a biomarker and therapeutic target.
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Affiliation(s)
- Carlotta Camilli
- Institute of Ophthalmology, University College London, London, UK.
| | - Alexandra E Hoeh
- Institute of Ophthalmology, University College London, London, UK
| | - Giulia De Rossi
- Institute of Ophthalmology, University College London, London, UK
| | - Stephen E Moss
- Institute of Ophthalmology, University College London, London, UK
| | - John Greenwood
- Institute of Ophthalmology, University College London, London, UK
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Lin M, Liu J, Zhang F, Qi G, Tao S, Fan W, Chen M, Ding K, Zhou F. The role of leucine-rich alpha-2-glycoprotein-1 in proliferation, migration, and invasion of tumors. J Cancer Res Clin Oncol 2022; 148:283-291. [PMID: 35037101 DOI: 10.1007/s00432-021-03876-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 11/27/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Leucine-rich alpha-2-glycoprotein-1 (LRG1) is widely involved in proliferation, migration, and invasion of various tumor cells. Recent studies have evaluated the potential of LRG1 as both an early tumor and a prognostic biomarker. METHOD The relevant literature from PubMed is reviewed in this article. RESULTS It has been found that LRG1 mainly acts on the regulatory mechanisms of angiogenesis, epithelial-mesenchymal transition (EMT), and apoptosis by transforming growth factor (TGF-β) signaling pathway as well as affecting the occurrence and development of the tumors. Moreover, with advancement of research, LRG1 regulation pathways which are independent of TGF-β signaling pathway have been gradually revealed in different tumor cells; There are several studies on the biological effects of LRG1 as an inflammatory factor, vascular growth regulator, cell adhesion, and a cell viability influencing factor. In addition, various tumor suppression methods which are based on regulation of LRG1 levels have also shown high potential clinical value. CONCLUSIONS LRG1 are critical for the processes of tumorigenesis, development, and metastasis in various tumors. The present study reviewed the latest research on the achievements of LRG1 in tumor genesis and development. Further, this study also discussed the related molecular mechanisms of various biological functions of LRG1.
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Affiliation(s)
- Meng Lin
- Department of Pathology, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Jinmeng Liu
- Laboratory of Biochemistry and Molecular Biology, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Fengping Zhang
- Department of Pathology, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Gaoxiu Qi
- Department of Pathology, Affiliated Hospital, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Shuqi Tao
- Department of Pathology, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Wenyuan Fan
- Department of Pathology, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Min Chen
- Department of Pathology, Affiliated Hospital, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Kang Ding
- Department of Pathology, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Fenghua Zhou
- Department of Pathology, Weifang Medical University, Weifang, Shandong, People's Republic of China.
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Kim YJ, Zhao Y, Myung JK, Yi JM, Kim MJ, Lee SJ. Suppression of breast cancer progression by FBXL16 via oxygen-independent regulation of HIF1α stability. Cell Rep 2021; 37:109996. [PMID: 34818544 DOI: 10.1016/j.celrep.2021.109996] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 08/06/2021] [Accepted: 10/22/2021] [Indexed: 12/21/2022] Open
Abstract
Triple-negative breast cancers (TNBCs) are characterized by high rates of recurrence and poor clinical outcomes. Deregulated E3 ligases are involved in breast cancer pathogenesis and progression, but the underlying mechanisms are unclear. Here, we find that F-box and leucine-rich repeat protein 16 (FBXL16) acts as a tumor suppressor in TNBCs. FBXL16 directly binds to HIF1α and induces its ubiquitination and degradation, regardless of the tumor microenvironment, resulting in blockade of the HIF1α-mediated epithelial-mesenchymal transition (EMT) and angiogenesis features of breast cancer. In TNBCs, FBXL16 expression is downregulated by the p38/miR-135b-3p axis, and loss of FBXL16 expression restores HIF1α-mediated metastatic features of breast cancer. Low expression of FBXL16 is associated with high-grade and lymph node-positive tumors and poor overall survival of breast cancer. Taken together, these findings demonstrate that modulation of FBXL16 expression may offer a favorable strategy for treatment of patients with metastatic breast cancer, including TNBCs.
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Affiliation(s)
- Yeon-Ju Kim
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Republic of Korea
| | - Yi Zhao
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Republic of Korea
| | - Jae Kyung Myung
- Department of Pathology, Hanyang University Medical Center, 222-1, Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Joo Mi Yi
- Department of Microbiology and Immunology, College of Medicine, Inje University, Busan 47392, South Korea
| | - Min-Jung Kim
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Su-Jae Lee
- Department of Life Science, Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Republic of Korea.
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Li S, Li Y, Tan B, An Z. Effect of KLF17 overexpression on epithelial-mesenchymal transition of gastric cancer cells. J Int Med Res 2021; 49:3000605211051581. [PMID: 34738482 PMCID: PMC8573523 DOI: 10.1177/03000605211051581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Objective To investigate Krüppel-like factor 17 (KLF17) expression in normal and gastric cancer tissues and cell lines. Methods Levels of KLF17 mRNA and protein in GES-1 normal gastric mucosal cells, and NCI-N87, SGC-7901, BGC-823 and HGC-27 gastric cancer cells were analysed by quantitative polymerase chain reaction (qPCR) and western blot. Differences in KLF17 expression between gastric cancer and adjacent tissues were analysed by qPCR and immunohistochemistry. Invasion/migration effects of KLF17 overexpression in BGC-823 and HGC-27 cells were analysed by wound-healing and Transwell chamber assays. Changes in expression of KLF17 and epithelial–mesenchymal transition (EMT)-related genes (matrix metalloproteinase [MMP]-9, vimentin and E-cadherin) were analysed in BGC-823 and HGC-27 cells before and after transfection using qPCR and western blot. Transforming growth factor (TGF)-β1, Smad family member (Smad)2/3 and phosphorylated-Smad2/3 levels in BGC-823 and HGC-27 cells were assessed by qPCR and western blot. Results KLF17 expression was lower in gastric cancer versus adjacent tissues, and in gastric cancer cell lines versus GES-1 normal gastric mucosal cells, and was positively correlated with degree of cancer-cell differentiation. Wound-healing and Transwell assays showed decreased migration and invasion ability of BGC-823 and HGC-27 cells transfected to overexpress KLF17. KLF17 overexpression was associated with decreased MMP-9 and vimentin in BGC-823 and HGC-27 cancer cells, and increased KLF17 and E-cadherin. KLF17 overexpression also resulted in decreased levels of TGF-β1 and p-Smad2/3 in BGC-823 and HGC-27 cancer cells. Conclusion KLF17 is poorly expressed in gastric cancer tissues and cell lines. KLF17 overexpression might inhibit EMT via the TGF-β/Smad pathway, thereby reducing gastric cancer cell invasion and migration. Therefore, KLF17 may become a novel target for treating gastric cancer.
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Affiliation(s)
- Shaoyi Li
- Department of Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.,Department of Surgery, Xingtai People's Hospital, Hebei Medical University, Xingtai, Hebei, China
| | - Yong Li
- Department of Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Bibo Tan
- Department of Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Zhaojie An
- Department of Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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Zhang X, Groen K, Morten BC, Steffens Reinhardt L, Campbell HG, Braithwaite AW, Bourdon JC, Avery-Kiejda KA. Effect of p53 and its N-terminally truncated isoform, Δ40p53, on breast cancer migration and invasion. Mol Oncol 2021; 16:447-465. [PMID: 34657382 PMCID: PMC8763661 DOI: 10.1002/1878-0261.13118] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/27/2021] [Accepted: 10/14/2021] [Indexed: 01/07/2023] Open
Abstract
Breast cancer is the most diagnosed malignancy in women, with over half a million women dying from this disease each year. In our previous studies, ∆40p53, an N‐terminally truncated p53 isoform, was found to be upregulated in breast cancers, and a high ∆40p53 : p53α ratio was linked with worse disease‐free survival. Although p53α inhibits cancer migration and invasion, little is known about the role of ∆40p53 in regulating these metastasis‐related processes and its role in contributing to worse prognosis. The aim of this study was to assess the role of ∆40p53 in breast cancer migration and invasion. A relationship between Δ40p53 and gene expression profiles was identified in oestrogen‐receptor‐positive breast cancer specimens. To further evaluate the role of Δ40p53 in oestrogen‐receptor‐positive breast cancer, MCF‐7 and ZR75‐1 cell lines were transduced to knockdown p53α or Δ40p53 and overexpress Δ40p53. Proliferation, migration and invasion were assessed in the transduced sublines, and gene expression was assessed through RNA‐sequencing and validated by reverse‐transcription quantitative PCR. Knockdown of both p53α and ∆40p53 resulted in increased proliferation, whereas overexpression of ∆40p53 reduced proliferation rates. p53α knockdown was also associated with increased cell mobility. ∆40p53 overexpression reduced both migratory and invasive properties of the transduced cells. Phenotypic findings are supported by gene expression data, including differential expression of LRG1, HYOU1, UBE2QL1, SERPINA5 and PCDH7. Taken together, these results suggest that, at the basal level, ∆40p53 works similarly to p53α in suppressing cellular mobility and proliferation, although the role of Δ40p53 may be cell context‐specific.
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Affiliation(s)
- Xiajie Zhang
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, The University of Newcastle, NSW, Australia
| | - Kira Groen
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, The University of Newcastle, NSW, Australia
| | - Brianna C Morten
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, The University of Newcastle, NSW, Australia
| | - Luiza Steffens Reinhardt
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, The University of Newcastle, NSW, Australia
| | - Hamish G Campbell
- Children's Medical Research Institute, University of Sydney, NSW, Australia
| | - Antony W Braithwaite
- Children's Medical Research Institute, University of Sydney, NSW, Australia.,Department of Pathology, School of Medicine, University of Otago, Dunedin, New Zealand
| | | | - Kelly A Avery-Kiejda
- Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.,School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, The University of Newcastle, NSW, Australia
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Feng J, Zhan J, Ma S. LRG1 promotes hypoxia-induced cardiomyocyte apoptosis and autophagy by regulating hypoxia-inducible factor-1α. Bioengineered 2021; 12:8897-8907. [PMID: 34643170 PMCID: PMC8806971 DOI: 10.1080/21655979.2021.1988368] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Cardiomyocyte apoptosis and autophagy play important roles in acute myocardial infarction (AMI), but the effect of leucine-rich alpha-2-glycoprotein 1 (LRG1) on the apoptosis and autophagy of H9c2 has not yet been reported. It was found through differential gene analysis and LASSO analysis that LRG1 was the key gene in AMI. In this study, western blot was applied to detect the protein expression of Bax, Bcl2, LC3, p62, LRG1 and hypoxia-inducible factor-1α (HIF-1α); CCK-8 assay was employed to detect cell viability; Annexin V-FITC/PI staining was adopted to evaluate apoptosis, and immunofluorescence assay was applied to detect autophagy. Under hypoxia conditions in H9c2 cells, LRG1 protein levels were increased, the cell activity was decreased, and apoptosis and autophagy were promoted; the downregulated LRG1 significantly enhanced cell viability but inhibited apoptosis and autophagy. When knocking down HIF-1α in the overexpressed LRG1 cells, the effects of LRG1 were reversed under hypoxia condition. In conclusion, LRG1/HIF-1α promoted H9c2 cell apoptosis and autophagy in hypoxia, potentially providing new ideas for the determination and treatment of AMI. Abbreviation: LRG1: Leucine-rich alpha-2-glycoprotein 1; LRR: leucine-rich repeat; HIF-1α: Hypoxia-inducible factor-1α; AMI: acute myocardial infarction
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Affiliation(s)
- Jiajie Feng
- Department of Emergency, Zhejiang Hospital, Hangzhou, Zhejiang, China
| | - Jiachen Zhan
- Department of Cardiology, Zhuji People's Hospital of Zhejiang Province, Zhuji, Zhejiang, China
| | - Shuangshuang Ma
- Department of Emergency, Zhejiang Hospital, Hangzhou, Zhejiang, China
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Mundo L, Tosi GM, Lazzi S, Pertile G, Parolini B, Neri G, Posarelli M, De Benedetto E, Bacci T, Silvestri E, Siciliano MC, Barbera S, Orlandini M, Greenwood J, Moss SE, Galvagni F. LRG1 Expression Is Elevated in the Eyes of Patients with Neovascular Age-Related Macular Degeneration. Int J Mol Sci 2021; 22:8879. [PMID: 34445590 PMCID: PMC8396268 DOI: 10.3390/ijms22168879] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/11/2021] [Accepted: 08/16/2021] [Indexed: 12/14/2022] Open
Abstract
Leucine-rich a-2-glycoprotein 1 (LRG1) is a candidate therapeutic target for treating the neovascular form of age-related macular degeneration (nvAMD). In this study we examined the expression of LRG1 in eyes of nvAMD patients. Choroidal neovascular membranes (CNVMs) from patients who underwent submacular surgery for retinal pigment epithelium-choroid graft transplantation were collected from 5 nvAMD patients without any prior intravitreal anti-VEGF injection, and from six patients who received intravitreal anti-VEGF injections before surgery. As controls free of nvAMD, retina sections were obtained from the eyes resected from a patient with lacrimal sac tumor and from a patient with neuroblastoma. CNVMs were immunostained for CD34, LRG1, and α-smooth muscle actin (α-SMA). Aqueous humor samples were collected from 58 untreated-naïve nvAMD patients prior to the intravitreal injection of anti-VEGF and 51 age-matched cataract control patients, and LRG1 concentration was measured by ELISA. The level of LRG1 immunostaining is frequently high in both the endothelial cells of the blood vessels, and myofibroblasts in the surrounding tissue of CNVMs of treatment-naïve nvAMD patients. Furthermore, the average concentration of LRG1 was significantly higher in the aqueous humor of nvAMD patients than in controls. These observations provide a strong experimental basis and scientific rationale for the progression of a therapeutic anti-LRG1 monoclonal antibody into clinical trials with patients with nvAMD.
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Affiliation(s)
- Lucia Mundo
- Section of Pathology, Department of Medical Biotechnology, University of Siena, 53100 Siena, Italy; (L.M.); (S.L.); (M.C.S.)
- Health Research Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Gian Marco Tosi
- Ophthalmology Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (G.M.T.); (G.N.); (M.P.); (E.D.B.); (T.B.)
| | - Stefano Lazzi
- Section of Pathology, Department of Medical Biotechnology, University of Siena, 53100 Siena, Italy; (L.M.); (S.L.); (M.C.S.)
| | - Grazia Pertile
- IRCCS Sacro Cuore Don Calabria Hospital, 37024 Negrar, Italy;
| | | | - Giovanni Neri
- Ophthalmology Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (G.M.T.); (G.N.); (M.P.); (E.D.B.); (T.B.)
| | - Matteo Posarelli
- Ophthalmology Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (G.M.T.); (G.N.); (M.P.); (E.D.B.); (T.B.)
| | - Elena De Benedetto
- Ophthalmology Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (G.M.T.); (G.N.); (M.P.); (E.D.B.); (T.B.)
| | - Tommaso Bacci
- Ophthalmology Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, 53100 Siena, Italy; (G.M.T.); (G.N.); (M.P.); (E.D.B.); (T.B.)
| | - Ennio Silvestri
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro, 2, 53100 Siena, Italy; (E.S.); (S.B.); (M.O.)
| | - Maria Chiara Siciliano
- Section of Pathology, Department of Medical Biotechnology, University of Siena, 53100 Siena, Italy; (L.M.); (S.L.); (M.C.S.)
| | - Stefano Barbera
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro, 2, 53100 Siena, Italy; (E.S.); (S.B.); (M.O.)
| | - Maurizio Orlandini
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro, 2, 53100 Siena, Italy; (E.S.); (S.B.); (M.O.)
| | - John Greenwood
- UCL Institute of Ophthalmology, 11-43 Bath Street, London EC1V 9EL, UK;
| | - Stephen E. Moss
- UCL Institute of Ophthalmology, 11-43 Bath Street, London EC1V 9EL, UK;
| | - Federico Galvagni
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro, 2, 53100 Siena, Italy; (E.S.); (S.B.); (M.O.)
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Farmer C, Palin MF. Providing domperidone throughout lactation enhances sow lactation performance. J Anim Sci 2021; 99:6310167. [PMID: 34175933 DOI: 10.1093/jas/skab200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/25/2021] [Indexed: 11/13/2022] Open
Abstract
The goal of this project was to determine the effects of domperidone given throughout lactation on hormonal and metabolic status, lactational performance, and gene expression in mammary epithelial cells of sows. Second parity sows were divided in two treatment groups: 1) daily intramuscular injections with canola oil (Control, CTL, n = 24), or 2) daily intramuscular injections with 0.5 mg/kg body weight (BW) of domperidone (DOMP, n = 23). Injections were given at 08h05 starting the day after farrowing until weaning. Over the first 4 d of treatment, DOMP sows also received 0.5 mg/kg BW of domperidone per os twice daily, whereas CTL sows were fed the vehicle. Litter size was standardized to 11 ± 1 within 24 h of birth and piglets were weighed at birth, 24 h postpartum, and on days 7, 22 (weaning on day 23), 35, and 56. Sow feed intake was recorded daily. Representative milk samples were obtained aseptically on day 21 of lactation from 15 sows per treatment for compositional analyses and milk fat globules were used to measure mRNA abundances of various genes. Jugular blood samples were obtained from all sows on days 2, 8, 16, and 23 of lactation to measure concentrations of prolactin, insulin-like growth factor-1 (IGF-1), leptin, adiponectin, insulin, glucose, urea, and free fatty acids (FFA). Concentrations of prolactin (P < 0.001) and FFA (P < 0.01) were increased in DOMP compared with CTL sows, whereas concentrations of insulin were decreased (P < 0.05). Urea concentrations were increased by treatment (P < 0.05) on days 16 and 23 of lactation, and those of IGF-1 were increased (P < 0.01) on day 16. Piglets from DOMP sows were heavier than those from CTL sows on day 22 (P < 0.01). Milk composition was unaffected by treatment. The mRNA abundance in milk fat globules for casein beta and whey acidic protein were lower (P ≤ 0.05) in DOMP than CTL sows. The long form of the prolactin receptor and the signal transducer and activator of transcription 5A mRNA abundances tended to be lower (P < 0.10) in DOMP than CTL sows. In conclusion, hyperprolactinemia induced by domperidone during lactation affected the endocrine and metabolite status of sows and stimulated growth of their suckling piglets.
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Affiliation(s)
- Chantal Farmer
- Agriculture and Agri-Food Canada, Sherbrooke R & D Centre, 2000 College, Sherbrooke, Québec J1M 0C8, Canada
| | - Marie-France Palin
- Agriculture and Agri-Food Canada, Sherbrooke R & D Centre, 2000 College, Sherbrooke, Québec J1M 0C8, Canada
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Yu B, Yang L, Song S, Li W, Wang H, Cheng J. LRG1 facilitates corneal fibrotic response by inducing neutrophil chemotaxis via Stat3 signaling in alkali-burned mouse corneas. Am J Physiol Cell Physiol 2021; 321:C415-C428. [PMID: 34260299 DOI: 10.1152/ajpcell.00517.2020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Leucine-rich α-2-glycoprotein-1 (LRG1) is a novel profibrotic factor that modulates transforming growth factor-β (TGF-β) signaling. However, its role in the corneal fibrotic response remains unknown. In the present study, we found that the LRG1 level increased in alkali-burned mouse corneas. In the LRG1-treated alkali-burned corneas, there were higher fibrogenic protein expression and neutrophil infiltration. LRG1 promoted neutrophil chemotaxis and CXCL-1 secretion. Conversely, LRG1-specific siRNA reduced fibrogenic protein expression and neutrophil infiltration in the alkali-burned corneas. The clearance of neutrophils effectively attenuated the LRG1-enhanced corneal fibrotic response, whereas the presence of neutrophils enhanced the effect of LRG1 on the fibrotic response in cultured TKE2 cells. In addition, the topical application of LRG1 elevated interleukin-6 (IL-6) and p-Stat3 levels in the corneal epithelium and in isolated neutrophils. The clearance of neutrophils inhibited the expression of p-Stat3 and IL-6 promoted by LRG1 in alkali-burned corneas. Moreover, neutrophils significantly increased the production of IL-6 and p-Stat3 promoted by LRG1 in TKE2 cells. Furthermore, the inhibition of Stat3 signaling by S3I-201 decreased neutrophil infiltration and alleviated the LRG1-enhanced corneal fibrotic response in the alkali-burned corneas. S3I-201 also reduced LRG1 or neutrophil-induced fibrotic response in TKE2 cells. In conclusion, LRG1 promotes the corneal fibrotic response by stimulating neutrophil infiltration via the modulation of the IL-6/Stat3 signaling pathway. Therefore, LRG1 could be targeted as a promising therapeutic strategy for patients with corneal fibrosis.
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Affiliation(s)
- Bingjie Yu
- Qingdao University, Qingdao, People's Republic of China.,State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, People's Republic of China
| | - Lingling Yang
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, People's Republic of China
| | - Shan Song
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, People's Republic of China.,Chengwu Hospital Affiliated to Shandong First Medical University, Heze, People's Republic of China
| | - Weina Li
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, People's Republic of China.,Liuzhou Aier Eye Hospital, Affiliated Hospital of Aier Ophthalmology College of Central South University, Liuzhou, People's Republic of China
| | - Huifeng Wang
- Qingdao University, Qingdao, People's Republic of China.,State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, People's Republic of China
| | - Jun Cheng
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, People's Republic of China.,Qingdao Eye Hospital of Shandong First University, Qingdao, People's Republic of China
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Kwan YP, Teo MHY, Lim JCW, Tan MS, Rosellinny G, Wahli W, Wang X. LRG1 Promotes Metastatic Dissemination of Melanoma through Regulating EGFR/STAT3 Signalling. Cancers (Basel) 2021; 13:3279. [PMID: 34208965 PMCID: PMC8269286 DOI: 10.3390/cancers13133279] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/19/2021] [Accepted: 06/23/2021] [Indexed: 12/17/2022] Open
Abstract
Although less common, melanoma is the deadliest form of skin cancer largely due to its highly metastatic nature. Currently, there are limited treatment options for metastatic melanoma and many of them could cause serious side effects. A better understanding of the molecular mechanisms underlying the complex disease pathophysiology of metastatic melanoma may lead to the identification of novel therapeutic targets and facilitate the development of targeted therapeutics. In this study, we investigated the role of leucine-rich α-2-glycoprotein 1 (LRG1) in melanoma development and progression. We first established the association between LRG1 and melanoma in both human patient biopsies and mouse melanoma cell lines and revealed a significant induction of LRG1 expression in metastatic melanoma cells. We then showed no change in tumour cell growth, proliferation, and angiogenesis in the absence of the host Lrg1. On the other hand, there was reduced melanoma cell metastasis to the lungs in Lrg1-deficient mice. This observation was supported by the promoting effect of LRG1 in melanoma cell migration, invasion, and adhesion. Mechanistically, LRG1 mediates melanoma cell invasiveness in an EGFR/STAT3-dependent manner. Taken together, our studies provided compelling evidence that LRG1 is required for melanoma metastasis but not growth. Targeting LRG1 may offer an alternative strategy to control malignant melanoma.
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Affiliation(s)
- Yuet Ping Kwan
- Centre for Vision Research, Duke NUS Medical School, 8 College Road, Singapore 169857, Singapore; (Y.P.K.); (M.H.Y.T.); (G.R.)
- Singapore Eye Research Institute (SERI) The Academia, 20 College Road, Level 6 Discovery Tower, Singapore 169856, Singapore
| | - Melissa Hui Yen Teo
- Centre for Vision Research, Duke NUS Medical School, 8 College Road, Singapore 169857, Singapore; (Y.P.K.); (M.H.Y.T.); (G.R.)
- Singapore Eye Research Institute (SERI) The Academia, 20 College Road, Level 6 Discovery Tower, Singapore 169856, Singapore
| | - Jonathan Chee Woei Lim
- Pharmacotherapeutics Unit, Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
| | - Michelle Siying Tan
- Department of Surgery, Yong Yoo Lin School of Medicine, National University of Singapore, MD6, 14 Medical Drive, Singapore 117599, Singapore;
| | - Graciella Rosellinny
- Centre for Vision Research, Duke NUS Medical School, 8 College Road, Singapore 169857, Singapore; (Y.P.K.); (M.H.Y.T.); (G.R.)
- Singapore Eye Research Institute (SERI) The Academia, 20 College Road, Level 6 Discovery Tower, Singapore 169856, Singapore
| | - Walter Wahli
- Center for Integrative Genomics, Université de Lausanne, Le Génopode, CH-1015 Lausanne, Switzerland;
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11 Mandalay Road, Singapore 308232, Singapore
- Toxalim (Research Center in Food Toxicology), INRAE, ENVT, INP-PURPAN, UMR 1331, UPS, Université de Toulouse, F-31027 Toulouse, France
| | - Xiaomeng Wang
- Centre for Vision Research, Duke NUS Medical School, 8 College Road, Singapore 169857, Singapore; (Y.P.K.); (M.H.Y.T.); (G.R.)
- Singapore Eye Research Institute (SERI) The Academia, 20 College Road, Level 6 Discovery Tower, Singapore 169856, Singapore
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Proteos, 61 Biopolis Dr, Singapore 138673, Singapore
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Kakar M, Berezovska MM, Broks R, Asare L, Delorme M, Crouzen E, Zviedre A, Reinis A, Engelis A, Kroica J, Saxena A, Petersons A. Serum and Urine Biomarker Leucine-Rich Alpha-2 Glycoprotein 1 Differentiates Pediatric Acute Complicated and Uncomplicated Appendicitis. Diagnostics (Basel) 2021; 11:860. [PMID: 34064691 PMCID: PMC8151968 DOI: 10.3390/diagnostics11050860] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 12/28/2022] Open
Abstract
PURPOSE This prospective, single-center cohort study analyzes the potential of inflammatory protein mediator leucine-rich alpha-2 glycoprotein 1 (LRG1) for the early and accurate diagnosis of acute appendicitis (AA), and differentiation of acute complicated (AcA) from uncomplicated appendicitis (AuA). METHODS Participants were divided into the AcA, AuA, and control groups, and their serum (s-LRG1) and urine LRG1 (u-LRG1) levels were assayed preoperatively on the second and fifth postoperative days. RESULTS 153 patients participated, 97 had AA. Preoperative u-LRG1 with a cut-off value of 0.18 μg/mL generated an area under the receiver operated characteristic (AUC) curve of 0.70 (95% CI 0.62-0.79) for AA versus control (p < 0.001), while the results for AcA versus AuA were not significant (AUC 0.60, 95% CI 0.49-0.71, p = 0.089). The s-LRG1 levels of AA versus the control with a cut-off value of 51.69 μg/mL generated an AUC of 0.94 (95% CI 0.91-0.99, p < 0.001). The cut-off value of s-LRG1 was 84.06 μg/mL for diagnosis of AcA from AuA, and therefore, significant (AUC 0.69, 95% CI 0.59-0.80, p = 0.001). CONCLUSIONS LRG1 exhibited excellent diagnostic performance as an inexpensive, non-invasive, rapid, and accurate biomarker able to reflect the pathogenesis of AA. LRG1 has the potential to replace advanced imaging to diagnose clinically ambiguous AA cases.
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Affiliation(s)
- Mohit Kakar
- Department of Pediatric Surgery, Children’s Clinical University Hospital, LV-1004 Riga, Latvia; (M.M.B.); (A.Z.); (A.E.); (A.P.)
- Department of Pediatric Surgery, Riga Stradins University, LV-1007 Riga, Latvia
| | - Marisa Maija Berezovska
- Department of Pediatric Surgery, Children’s Clinical University Hospital, LV-1004 Riga, Latvia; (M.M.B.); (A.Z.); (A.E.); (A.P.)
- Department of Pediatric Surgery, Riga Stradins University, LV-1007 Riga, Latvia
| | - Renars Broks
- Department of Biology and Microbiology, Riga Stradins University, LV-1007 Riga, Latvia; (R.B.); (A.R.); (J.K.)
| | - Lasma Asare
- Statistical Unit, Riga Stradins University, LV-1007 Riga, Latvia;
| | - Mathilde Delorme
- Faculty of Medicine, Riga Stradins University, LV-1007 Riga, Latvia; (M.D.); (E.C.)
| | - Emile Crouzen
- Faculty of Medicine, Riga Stradins University, LV-1007 Riga, Latvia; (M.D.); (E.C.)
| | - Astra Zviedre
- Department of Pediatric Surgery, Children’s Clinical University Hospital, LV-1004 Riga, Latvia; (M.M.B.); (A.Z.); (A.E.); (A.P.)
- Department of Pediatric Surgery, Riga Stradins University, LV-1007 Riga, Latvia
| | - Aigars Reinis
- Department of Biology and Microbiology, Riga Stradins University, LV-1007 Riga, Latvia; (R.B.); (A.R.); (J.K.)
| | - Arnis Engelis
- Department of Pediatric Surgery, Children’s Clinical University Hospital, LV-1004 Riga, Latvia; (M.M.B.); (A.Z.); (A.E.); (A.P.)
- Department of Pediatric Surgery, Riga Stradins University, LV-1007 Riga, Latvia
| | - Juta Kroica
- Department of Biology and Microbiology, Riga Stradins University, LV-1007 Riga, Latvia; (R.B.); (A.R.); (J.K.)
| | - Amulya Saxena
- Department of Pediatric Surgery, Chelsea Children’s Hospital, Chelsea and Westminster NHS Fdn Trust, Imperial College London, London SW10 9NH, UK;
| | - Aigars Petersons
- Department of Pediatric Surgery, Children’s Clinical University Hospital, LV-1004 Riga, Latvia; (M.M.B.); (A.Z.); (A.E.); (A.P.)
- Department of Pediatric Surgery, Riga Stradins University, LV-1007 Riga, Latvia
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Zhou L, Shi DP, Chu WJ, Yang LL, Xu HF. LRG1 promotes epithelial-mesenchymal transition of retinal pigment epithelium cells by activating NOX4. Int J Ophthalmol 2021; 14:349-355. [PMID: 33747808 DOI: 10.18240/ijo.2021.03.03] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 10/14/2020] [Indexed: 12/19/2022] Open
Abstract
AIM To investigate the effect of leucine-rich-alpha-2-glycoprotein 1 (LRG1) on epithelial-mesenchymal transition (EMT) in retinal pigment epithelium (RPE) cells, and to explore the role of NADPH oxidase 4 (NOX4). METHODS RPE cells (ARPE-19 cell line) were treated with transforming growth factor-β1 (TGF-β1) to induce EMT. Changes of the mRNA and protein expression levels of LRG1 were tested in the TGF-β1 treated cells. The recombinant human LRG1 protein (rLRG1) and siRNA of LRG1 were used to establish accumulation of exogenous LRG1 model and the down-regulation of LRG1 model in ARPE-19 cells respectively, and to detect EMT-related markers including fibronectin, α-smooth muscle actin (α-SMA) and zonula occludens-1 (ZO-1). The mRNA and protein expression level of NOX4 were measured according to the above treatments. VAS2870 was used as a NOX4 inhibitor in rLRG1-treated cells. EMT-related markers were detected to verify the effect of NOX4 in the process of EMT. RESULTS TGF-β1 promoted the expression of LRG1 at both the mRNA and protein levels during the process of EMT which showed the up-regulation of fibronectin and α-SMA, as well as the down-regulation of ZO-1. Furthermore, the rLRG1 promoted EMT of ARPE-19 cells, which manifested high levels of fibronectin and α-SMA and low level of ZO-1, whereas knockdown of LRG1 prevented EMT by decreasing the expressions of fibronectin and α-SMA and increasing the expression of ZO-1 in ARPE-19 cells. Besides, the rLRG1 activated and LRG1 siRNA suppressed NOX4 expression. EMT was inhibited when VAS2870 was used in the rLRG1-treated cells. CONCLUSION These results for the first time demonstrate that LRG1 promotes EMT of RPE cells by activating NOX4, which may provide a novel direction to explore the mechanisms of subretinal fibrosis.
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Affiliation(s)
- Li Zhou
- Medical College, Qingdao University, Qingdao 266071, Shandong Province, China.,State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao 266071, Shandong Province, China
| | - De-Peng Shi
- Qingdao Eye Hospital, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao 266071, Shandong Province, China
| | - Wen-Juan Chu
- Qingdao Eye Hospital, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao 266071, Shandong Province, China
| | - Ling-Ling Yang
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao 266071, Shandong Province, China
| | - Hai-Feng Xu
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao 266071, Shandong Province, China.,Qingdao Eye Hospital, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao 266071, Shandong Province, China
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44
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Furuta T, Sugita Y, Komaki S, Ohshima K, Morioka M, Uchida Y, Tachikawa M, Ohtsuki S, Terasaki T, Nakada M. The Multipotential of Leucine-Rich α-2 Glycoprotein 1 as a Clinicopathological Biomarker of Glioblastoma. J Neuropathol Exp Neurol 2021; 79:873-879. [PMID: 32647893 DOI: 10.1093/jnen/nlaa058] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/02/2020] [Indexed: 01/14/2023] Open
Abstract
Leucine-rich α-2 glycoprotein 1 (LRG1) is a diagnostic marker candidate for glioblastoma. Although LRG1 has been associated with angiogenesis, it has been suggested that its biomarker role differs depending on the type of tumor. In this study, a clinicopathological examination of LRG1's role as a biomarker for glioblastoma was performed. We used tumor tissues of 155 cases with diffuse gliomas (27 astrocytomas, 14 oligodendrogliomas, 114 glioblastomas). The immunohistochemical LRG1 intensity scoring was classified into 2 groups: low expression and high expression. Mutations of IDH1, IDH2, and TERT promoter were analyzed through the Sanger method. We examined the relationship between LRG1 expression level in glioblastoma and clinical parameters, such as age, preoperative Karnofsky performance status, tumor location, extent of resection, O6-methylguanine DNA methyltransferase promoter, and prognosis. LRG1 high expression rate was 41.2% in glioblastoma, 3.7% in astrocytoma, and 21.4% in oligodendroglioma. Glioblastoma showed a significantly higher LRG1 expression than lower-grade glioma (p = 0.0003). High expression of LRG1 was an independent favorable prognostic factor (p = 0.019) in IDH-wildtype glioblastoma and correlated with gross total resection (p = 0.002) and the tumor location on nonsubventricular zone (p = 0.00007). LRG1 demonstrated multiple potential as a diagnostic, prognostic, and regional biomarker for glioblastoma.
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Affiliation(s)
- Takuya Furuta
- From the Department of Pathology; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan.,Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Yasuo Sugita
- From the Department of Pathology; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan.,Department of Neurosurgery; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan.,Kurume University School of Medicine; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan
| | - Satoru Komaki
- Department of Neurosurgery; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan
| | - Koichi Ohshima
- From the Department of Pathology; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan
| | - Motohiro Morioka
- Department of Neurosurgery; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan
| | - Yasuo Uchida
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai
| | - Masanori Tachikawa
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai.,Graduate School of Biomedical Sciences, Tokushima University, Tokushima
| | - Sumio Ohtsuki
- From the Department of Pathology; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan.,Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto
| | - Tetsuya Terasaki
- Division of Membrane Transport and Drug Targeting, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai
| | - Mitsutoshi Nakada
- From the Department of Pathology; Department of Neuropathology, St. Mary's Hospita, Kurume, Japan.,Department of Neurosurgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
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45
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Wang WS, Zhao CS. Formononetin exhibits anticancer activity in gastric carcinoma cell and regulating miR-542-5p. Kaohsiung J Med Sci 2021; 37:215-225. [PMID: 33231363 DOI: 10.1002/kjm2.12322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 10/12/2020] [Accepted: 10/18/2020] [Indexed: 12/14/2022] Open
Abstract
Formononetin exhibits anti-neoplastic activities in specific types of cancers, such as colon carcinoma and breast cancer. Nevertheless, its role in suppressing gastric carcinoma (GC) growth and metastatic-associated phenotypes has not been fully understood. Here, we demonstrated that formononetin decreased the viability of GC cell line SGC-7901 and MGC-803. Furthermore, formononetin suppressed the migration and invasion abilities of GC cells. Consistent with the results in vitro, the anticancer effect of formononetin was verified using xenograft model. The expression of microRNA-542-5p (miR-542-5p), acted as an oncogene in many cancers, was identified to be upregulated in GC. Importantly, miR-542-5p might involve in formononetin exhibits anticancer activity in GC cells. Taken together, these results indicate that formononetin inhibits the growth and aggressiveness of GC cells in vitro and in vivo.
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Affiliation(s)
- Wei-Song Wang
- Department of General Surgery, Zhuji Central Hospital, Zhuji, China
| | - Can-Song Zhao
- Department of General Surgery, Zhuji People's Hospital of Zhejiang, Zhuji, China
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46
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Nakajima H, Nakajima K, Serada S, Fujimoto M, Naka T, Sano S. The involvement of leucine-rich α-2 glycoprotein in the progression of skin and lung fibrosis in bleomycin-induced systemic sclerosis model. Mod Rheumatol 2021; 31:1120-1128. [PMID: 33535851 DOI: 10.1080/14397595.2021.1883841] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Systemc sclerosis (SSc) is an autoimmune disorder characterized by fibrosis of the skin and internal organs. Recently, it has been shown that leucine-rich α-2 glycoprotein (LRG) functions as a modulator of transforming growth factor-β (TGF-β) signaling in fibrosis. We aimed to characterize the effect of LRG in SSc model and SSc patients. METHODS Histological analysis was performed on LRG knockout (KO) and wild type (WT) mouse in the skin and the lung after bleomycin administration. Serum LRG levels were measured during the injection period. Gene expression analysis of the skin and lung tissue from LRG KO and WT mice was performed. In addition, serum LRG levels were determined in SSc patients and healthy controls. RESULTS LRG KO mice display an inhibition of fibrosis in the skin in association with a decrease of dermal thickness, collagen deposition, and phospho-Smad3 expression after bleomycin. Serum LRG concentration significantly increased in WT mice after bleomycin. There was also a suppression of inflammation and fibrosis in the LRG KO mouse lung indicated by a reduction of lung weight, collagen content, and phospho-Smad3 expression after bleomycin. Gene expressions of TGF-β and Smad2/3 were significantly reduced in LRG KO mice. Serum LRG levels in SSc patients were significantly higher than those in controls. CONCLUSION LRG promotes fibrotic processes in SSc model through TGF-β-Smad3 signaling, and LRG can be a biomarker for SSc in humans and also a potential therapeutic target for SSc.
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Affiliation(s)
- Hideki Nakajima
- Department of Dermatology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Kimiko Nakajima
- Department of Dermatology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Satoshi Serada
- Department of Clinical Immunology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Minoru Fujimoto
- Department of Clinical Immunology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Tetsuji Naka
- Department of Clinical Immunology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Shigetoshi Sano
- Department of Dermatology, Kochi Medical School, Kochi University, Nankoku, Japan
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47
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Zhang YS, Han L, Yang C, Liu YJ, Zhang XM. Prognostic Value of LRG1 in Breast Cancer: A Retrospective Study. Oncol Res Treat 2020; 44:36-42. [PMID: 33242858 DOI: 10.1159/000510945] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/15/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND High expression of leucine-rich alpha-2-glycoprotein 1 (LRG1) is closely related to angiogenesis, which may play an important role in promoting invasion and metastasis. However, the current literature has yet to clarify the clinical significance of LRG1 in breast cancer. OBJECTIVES The purpose of this work was to validate the correlation between LRG1 expression and prognosis in early breast cancer. METHODS We utilized an LRG1 detection agent in 330 cases of early breast cancer. The correlation of LRG1 expression with clinicopathological features, patient recurrence, and survival was investigated. RESULTS Compared with adjacent tissue samples, an elevated expression of LRG1 was observed in breast cancer samples. Moreover, LRG1 expression is associated with the number of lymphatic metastases and TNM pathological stage (p = 0.000, p = 0.000, respectively). For disease-free survival (DFS), the Kaplan-Meier curve indicated a poorer prognosis for the group with high LRG1 levels compared with the low LRG1 group (p = 0.000). A similar result was found for overall survival (OS; p = 0.000). The multivariate Cox regression indicated that LRG1 was still associated with DFS (HR 2.090, 95% CI 1.205-3.625, p = 0.009) and OS (HR 2.112, 95% CI 1.167-3.822, p = 0.013). The histological grade, TNM pathological stage, and molecular subtype were identified as independent risk factors affecting OS. CONCLUSION In the malignant progression of breast cancer, high LRG1 levels are associated with lymphatic metastasis, histological grade, poor DFS, and poor OS. This study validates the use of LRG1 as a potential prognosis biomarker for early breast cancer.
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Affiliation(s)
- Yan-Shou Zhang
- Breast Cancer Center, The Fourth Hospital, Hebei Medical University, Shijiazhuang, China
| | - Lei Han
- Department of Radiotherapy, The Fourth Hospital, Hebei Medical University, Shijiazhuang, China
| | - Chao Yang
- Breast Cancer Center, The Fourth Hospital, Hebei Medical University, Shijiazhuang, China
| | - Yun-Jiang Liu
- Breast Cancer Center, The Fourth Hospital, Hebei Medical University, Shijiazhuang, China,
| | - Xiang-Mei Zhang
- Research Center, The Fourth Hospital, Hebei Medical University, Shijiazhuang, China
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48
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Basak D, Uddin MN, Hancock J. The Role of Oxidative Stress and Its Counteractive Utility in Colorectal Cancer (CRC). Cancers (Basel) 2020; 12:E3336. [PMID: 33187272 PMCID: PMC7698080 DOI: 10.3390/cancers12113336] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/06/2020] [Accepted: 11/08/2020] [Indexed: 12/12/2022] Open
Abstract
An altered redox status accompanied by an elevated generation of reactive oxygen/nitrogen species (ROS/RNS) has been implicated in a number of diseases including colorectal cancer (CRC). CRC, being one of the most common cancers worldwide, has been reported to be associated with multiple environmental and lifestyle factors (e.g., dietary habits, obesity, and physical inactivity) and harboring heightened oxidative stress that results in genomic instability. Although under normal condition ROS regulate many signal transduction pathways including cell proliferation and survival, overwhelming of the antioxidant capacity due to metabolic abnormalities and oncogenic signaling leads to a redox adaptation response that imparts drug resistance. Nevertheless, excessive reliance on elevated production of ROS makes the tumor cells increasingly vulnerable to further ROS insults, and the abolition of such drug resistance through redox perturbation could be instrumental to preferentially eliminate them. The goal of this review is to demonstrate the evidence that links redox stress to the development of CRC and assimilate the most up-to-date information that would facilitate future investigation on CRC-associated redox biology. Concomitantly, we argue that the exploitation of this distinct biochemical property of CRC cells might offer a fresh avenue to effectively eradicate these cells.
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Affiliation(s)
- Debasish Basak
- College of Pharmacy, Larkin University, Miami, FL 33169, USA;
| | | | - Jake Hancock
- College of Pharmacy, Larkin University, Miami, FL 33169, USA;
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49
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Lee MS, Cho HJ, Hong JY, Lee J, Park SH, Park JO, Park YS, Lim HY, Kang WK, Cho YB, Kim ST. Clinical and molecular distinctions in patients with refractory colon cancer who benefit from regorafenib treatment. Ther Adv Med Oncol 2020; 12:1758835920965842. [PMID: 33224274 PMCID: PMC7649869 DOI: 10.1177/1758835920965842] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 09/16/2020] [Indexed: 01/01/2023] Open
Abstract
Regorafenib (Stivarga, BAY 73-4506; Bayer Pharma AG, Berlin, Germany) is a novel oral multikinase inhibitor that blocks the activity of several protein kinases. However, few guidelines exist for novel biomarkers to select patients who will likely benefit from regorafenib treatment. Metastatic colorectal cancer (mCRC) patients treated with regorafenib were evaluated in this study. Tumor tissues of these patients were subjected to next-generation sequencing-based cancer panel tests. The relationship between molecular profiling and efficacy of regorafenib was analyzed. Among the 76 mCRC patients, the median age was 58 years (range 22–79 years), and 73.7% received regorafenib as a third-line therapy. The primary tumor locations were the right side (n = 15, 19.8%) and the left side (n = 61, 80.2%). Most patients (97.4%) had received prior anti-angiogenetic agents, and a prior anti-Epidermal Growth Factor Receptor (EGFR) agent had been administered to 32.9%. Of these 76 patients, 65 were evaluated to determine the efficacy of treatment. We observed zero complete responses, seven confirmed partial responses (PR 9.2%), 26 stable disease states (34.2%), and 32 disease progressions (42.1%). The overall confirmed response rate and the disease control rate were 9.2% and 43.4%, respectively. Genomic analysis revealed that APC mutations were significant in patients who demonstrated a tumor response to regorafenib (p < 0.05). Interestingly, FGFR1 amplification was detected in only three of 76 patients (3.9%), and these three patients achieved a PR to regorafenib. The median progression-free survival time was 2.8 months (95% Confidence Interval [CI] 1.6–4.0). Patients with BRAF mutation and/or SMAD4 mutation had significantly worse progression-free survival (PFS) than those without such a mutation. On pathway analysis, Tumor Growth Factor (TGF)-beta pathways were significantly associated with worse PFS. We found that efficacy of regorafenib might be correlated with specific genetic aberrations, such as APC mutation and FGFR1 amplification. In addition, SMAD4 mutation and TGF-beta pathway were associated with worse PFS after regorafenib. We found that efficacy of regorafenib might be correlated with specific genetic aberrations, such as APC mutation and FGFR1 amplification. In addition, SMAD4 mutation and the TGF-beta pathway were associated with worse PFS after regorafenib.
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Affiliation(s)
- Min-Sang Lee
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea
| | - Hee Jin Cho
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea Precision Medicine Research Institute, Samsung Medical Center, Gangnam-gu, Seoul, Korea
| | - Jung Yong Hong
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea
| | - Jeeyun Lee
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea
| | - Se Hoon Park
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea
| | - Joon Oh Park
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea
| | - Young Suk Park
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea
| | - Ho Yeong Lim
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea
| | - Won Ki Kang
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Korea
| | - Yong Beom Cho
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Seung Tae Kim
- Division of Hematology/Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
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50
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Liu C, Teo MHY, Pek SLT, Wu X, Leong ML, Tay HM, Hou HW, Ruedl C, Moss SE, Greenwood J, Tavintharan S, Hong W, Wang X. A Multifunctional Role of Leucine-Rich α-2-Glycoprotein 1 in Cutaneous Wound Healing Under Normal and Diabetic Conditions. Diabetes 2020; 69:2467-2480. [PMID: 32887674 PMCID: PMC7576570 DOI: 10.2337/db20-0585] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 08/24/2020] [Indexed: 12/26/2022]
Abstract
Delayed wound healing is commonly associated with diabetes. It may lead to amputation and death if not treated in a timely fashion. Limited treatments are available partially due to the poor understanding of the complex disease pathophysiology. Here, we investigated the role of leucine-rich α-2-glycoprotein 1 (LRG1) in normal and diabetic wound healing. First, our data showed that LRG1 was significantly increased at the inflammation stage of murine wound healing, and bone marrow-derived cells served as a major source of LRG1. LRG1 deletion causes impaired immune cell infiltration, reepithelialization, and angiogenesis. As a consequence, there is a significant delay in wound closure. On the other hand, LRG1 was markedly induced in diabetic wounds in both humans and mice. LRG1-deficient mice were resistant to diabetes-induced delay in wound repair. We further demonstrated that this could be explained by the mitigation of increased neutrophil extracellular traps (NETs) in diabetic wounds. Mechanistically, LRG1 mediates NETosis in an Akt-dependent manner through TGFβ type I receptor kinase ALK5. Taken together, our studies demonstrated that LRG1 derived from bone marrow cells is required for normal wound healing, revealing a physiological role for this glycoprotein, but that excess LRG1 expression in diabetes is pathogenic and contributes to chronic wound formation.
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Affiliation(s)
- Chenghao Liu
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Melissa Hui Yen Teo
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore
| | | | - Xiaoting Wu
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Mei Ling Leong
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Hui Min Tay
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Han Wei Hou
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Christiane Ruedl
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Stephen E Moss
- Institute of Ophthalmology, University College London, London, U.K
| | - John Greenwood
- Institute of Ophthalmology, University College London, London, U.K
| | - Subramaniam Tavintharan
- Clinical Research Unit, Khoo Teck Puat Hospital, Singapore
- Diabetes Centre, Admiralty Medical Centre, Singapore
- Division of Endocrinology, Department of Medicine, Khoo Teck Puat Hospital, Singapore
| | - Wanjin Hong
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore
| | - Xiaomeng Wang
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore
- Singapore Eye Research Institute, The Academia, Singapore
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