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Wang P, Lan Q, Huang Q, Zhang R, Zhang S, Yang L, Song Y, Wang T, Ma G, Liu X, Guo X, Zhang Y, Liu C. Schisandrin A Attenuates Diabetic Nephropathy via EGFR/AKT/GSK3β Signaling Pathway Based on Network Pharmacology and Experimental Validation. BIOLOGY 2024; 13:597. [DOI: 10.3390/biology13080597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Diabetic nephropathy (DN) is one of the common complications of diabetes and the main cause of end-stage renal disease (ESRD) in clinical practice. Schisandrin A (Sch A) has multiple pharmacological activities, including inhibiting fibrosis, reducing apoptosis and oxidative stress, and regulating immunity, but its pharmacological mechanism for the treatment of DN is still unclear. In vivo, streptozotocin (STZ) and a high-fat diet were used to induce type 2 diabetic rats, and Sch A was administered for 4 weeks. At the same time, protein–protein interaction (PPI) networks were established to analyze the overlapping genes of DN and Sch A. Subsequently, the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) analyses were performed to determine the hub pathway. In addition, molecular docking was used to preliminarily verify the affinity of hub proteins and Sch A. Further, H&E staining, Sirius red staining, immunohistochemistry, immunofluorescence, and western blot analysis were used to detect the location and expression of related proteins in DN. This study revealed the multi-target and multi-pathway characteristics of Sch A in the treatment of DN. First, Sch A could effectively improve glucose tolerance, reduce urine microprotein and urine creatinine levels, and alleviate renal pathological damage in DN rats. Second, EGFR was the hub gene screened in overlapping genes (43) of Sch A (100) and DN (2524). Finally, it was revealed that Sch A could inhibit the protein expression levels of EGFR and PTRF and reduced the expression of apoptosis-related proteins, and this effect was related to the modulation of the AKT/GSK-3β signaling pathway. In summary, Sch A has a protective effect in DN rats, EGFR may be a potential therapeutic target, throughout modulating AKT/GSK-3β pathway.
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Affiliation(s)
- Pengyu Wang
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Qing Lan
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Qi Huang
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Ruyi Zhang
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430000, China
| | - Shuo Zhang
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Leiming Yang
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Yan Song
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Tong Wang
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Guandi Ma
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Xiufen Liu
- Hubei Key Laboratory of Diabetes and Angiopathy, Medical Research Institute, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Xiying Guo
- Hubei Key Laboratory of Diabetes and Angiopathy, Medical Research Institute, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Youzhi Zhang
- School of Pharmacy, Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
- Hubei Key Laboratory of Diabetes and Angiopathy, Medical Research Institute, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Chao Liu
- Hubei Key Laboratory of Diabetes and Angiopathy, Medical Research Institute, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
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Feng X, Wang C, Ji B, Qiao J, Xu Y, Zhu S, Ji Z, Zhou B, Tong W, Xu W. CD_99 G1 neutrophils modulate osteogenic differentiation of mesenchymal stem cells in the pathological process of ankylosing spondylitis. Ann Rheum Dis 2024; 83:324-334. [PMID: 37977819 PMCID: PMC10894850 DOI: 10.1136/ard-2023-224107] [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: 03/02/2023] [Accepted: 10/28/2023] [Indexed: 11/19/2023]
Abstract
OBJECTIVES This study aimed to identify the types and heterogeneity of cells within the spinal enthesis and investigate the underlying mechanisms of osteogenesis. METHODS Single-cell RNA sequencing was used to identify cell populations and their gene signatures in the spinal enthesis of five patients with ankylosing spondylitis (AS) and three healthy individuals. The transcriptomes of 40 065 single cells were profiled and divided into 7 clusters: neutrophils, monocytic cells, granulomonocytic progenitor_erythroblasts, T cells, B cells, plasma cells and stromal cells. Real-time quantitative PCR, immunofluorescence, flow cytometry, osteogenesis induction, alizarin red staining, immunohistochemistry, short hairpin RNA and H&E staining were applied to validate the bioinformatics analysis. RESULTS Pseudo-time analysis showed two differentiation directions of stromal cells from the mesenchymal stem cell subpopulation MSC-C2 to two Cxcl12-abundant-reticular (CAR) cell subsets, Osteo-CAR and Adipo-CAR, within which three transcription factors, C-JUN, C-FOS and CAVIN1, were highly expressed in AS and regulated the osteogenesis of mesenchymal stem cells. A novel subcluster of early-stage neutrophils, CD99_G1, was elevated in AS. The proinflammatory characteristics of monocyte dendritic cell progenitor-recombinant adiponectin receptor 2 monocytic cells were explored. Interactions between Adipo-CAR cells, CD99_G1 neutrophils and other cell types were mapped by identifying ligand-receptor pairs, revealing the recruitment characteristics of CD99_G1 neutrophils by Adipo-CAR cells and the pathogenesis of osteogenesis induced in AS. CONCLUSIONS Our results revealed the dynamics of cell subpopulations, gene expression and intercellular interactions during AS pathogenesis. These findings provide new insights into the cellular and molecular mechanisms of osteogenesis and will benefit the development of novel therapeutic strategies.
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Affiliation(s)
- Xinzhe Feng
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Chen Wang
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Boyao Ji
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Junjie Qiao
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yihong Xu
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Shanbang Zhu
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zhou Ji
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Bole Zhou
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Wenwen Tong
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Weidong Xu
- Department of Joint Bone Disease Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
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Sun S, Yang C, Wang K, Huang R, Zhang KN, Liu Y, Cao Z, Zhao Z, Jiang T. Molecular and clinical characterization of PTRF in glioma via 1,022 samples. BMC Cancer 2023; 23:551. [PMID: 37322408 DOI: 10.1186/s12885-023-11001-2] [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: 01/30/2023] [Accepted: 05/24/2023] [Indexed: 06/17/2023] Open
Abstract
Polymerase I and transcript release factor (PTRF) plays a role in the regulation of gene expression and the release of RNA transcripts during transcription, which have been associated with various human diseases. However, the role of PTRF in glioma remains unclear. In this study, RNA sequencing (RNA-seq) data (n = 1022 cases) and whole-exome sequencing (WES) data (n = 286 cases) were used to characterize the PTRF expression features. Gene ontology (GO) functional enrichment analysis was used to assess the biological implication of changes in PTRF expression. As a result, the expression of PTRF was associated with malignant progression in gliomas. Meanwhile, somatic mutational profiles and copy number variations (CNV) revealed the glioma subtypes classified by PTRF expression showed distinct genomic alteration. Furthermore, GO functional enrichment analysis suggested that PTRF expression was associated with cell migration and angiogenesis, particularly during an immune response. Survival analysis confirmed that a high expression of PTRF is associated with a poor prognosis. In summary, PTRF may be a valuable factor for the diagnosis and treatment target of glioma.
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Affiliation(s)
- Si Sun
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Changlin Yang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Kuanyu Wang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Ruoyu Huang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Ke-Nan Zhang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China
| | - Yanwei Liu
- Department of Radiotherapy, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
| | - Zhi Cao
- Department of Neurosurgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110032, China.
| | - Zheng Zhao
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China.
- Chinese Glioma Genome Atlas Network and Asian Glioma Genome Atlas Network, Beijing, 100070, China.
| | - Tao Jiang
- Beijing Neurosurgical Institute, Capital Medical University, Beijing, 100070, China.
- Chinese Glioma Genome Atlas Network and Asian Glioma Genome Atlas Network, Beijing, 100070, China.
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
- Center of Brain Tumor, Beijing Institute for Brain Disorders, Beijing, 100069, China.
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, China.
- Research Unit of Accurate Diagnosis, Treatment, and Translational Medicine of Brain Tumors, Chinese Academy of Medical Sciences, Beijing, 100070, China.
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3D osteogenic differentiation of human iPSCs reveals the role of TGFβ signal in the transition from progenitors to osteoblasts and osteoblasts to osteocytes. Sci Rep 2023; 13:1094. [PMID: 36658197 PMCID: PMC9852429 DOI: 10.1038/s41598-023-27556-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 01/04/2023] [Indexed: 01/21/2023] Open
Abstract
Although the formation of bone-like nodules is regarded as the differentiation process from stem cells to osteogenic cells, including osteoblasts and osteocytes, the precise biological events during nodule formation are unknown. Here we performed the osteogenic induction of human induced pluripotent stem cells using a three-dimensional (3D) culture system using type I collagen gel and a rapid induction method with retinoic acid. Confocal and time-lapse imaging revealed the osteogenic differentiation was initiated with vigorous focal proliferation followed by aggregation, from which cells invaded the gel. Invading cells changed their morphology and expressed osteocyte marker genes, suggesting the transition from osteoblasts to osteocytes. Single-cell RNA sequencing analysis revealed that 3D culture-induced cells with features of periosteal skeletal stem cells, some of which expressed TGFβ-regulated osteoblast-related molecules. The role of TGFβ signal was further analyzed in the transition from osteoblasts to osteocytes, which revealed that modulation of the TGFβ signal changed the morphology and motility of cells isolated from the 3D culture, suggesting that the TGFβ signal maintains the osteoblastic phenotype and the transition into osteocytes requires down-regulation of the TGFβ signal.
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Zapata-Mercado E, Azarova EV, Hristova K. Effect of reversible osmotic stress on live cell plasma membranes, probed via Laurdan general polarization measurements. Biophys J 2022; 121:2411-2418. [PMID: 35596525 DOI: 10.1016/j.bpj.2022.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/10/2021] [Accepted: 05/16/2022] [Indexed: 11/02/2022] Open
Abstract
Here we seek to gain insight into changes in the plasma membrane of live cells upon the application of osmotic stress using Laurdan, a fluorescent probe that reports on membrane organization, hydration, and dynamics. It is known that the application of osmotic stress to lipid vesicles causes a decrease in Laurdan's generalized polarization (GP), which has been interpreted as an indication of membrane stretching. In cells, we see the opposite effects, as GP increases when the osmolarity of the solution is decreased. This increase in GP is associated with the presence of caveolae, which are known to disassemble and flatten in response to osmotic stress.
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Affiliation(s)
- Elmer Zapata-Mercado
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, and Program in Molecular Biophysics, Johns Hopkins University, Baltimore, MD 21218
| | - Evgenia V Azarova
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, and Program in Molecular Biophysics, Johns Hopkins University, Baltimore, MD 21218
| | - Kalina Hristova
- Department of Materials Science and Engineering, Institute for NanoBioTechnology, and Program in Molecular Biophysics, Johns Hopkins University, Baltimore, MD 21218.
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Low JY, Laiho M. Caveolae-Associated Molecules, Tumor Stroma, and Cancer Drug Resistance: Current Findings and Future Perspectives. Cancers (Basel) 2022; 14:cancers14030589. [PMID: 35158857 PMCID: PMC8833326 DOI: 10.3390/cancers14030589] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/21/2022] [Accepted: 01/22/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Cell membranes contain small invaginations called caveolae. They are a specialized lipid domain and orchestrate cellular signaling events, mechanoprotection, and lipid homeostasis. Formation of the caveolae depends on two classes of proteins, the caveolins and cavins, which form large complexes that allow their self-assembly into caveolae. Loss of either of these two proteins leads to distortion of the caveolae structure and disruption of many physiological processes that affect diseases of the muscle, metabolic states governing lipids, and the glucose balance as well as cancers. In cancers, the expression of caveolins and cavins is heterogenous, and they undergo alterations both in the tumors and the surrounding tumor microenvironment stromal cells. Remarkably, their expression and function has been associated with resistance to many cancer drugs. Here, we summarize the current knowledge of the resistance mechanisms and how this knowledge could be applied into the clinic in future. Abstract The discovery of small, “cave-like” invaginations at the plasma membrane, called caveola, has opened up a new and exciting research area in health and diseases revolving around this cellular ultrastructure. Caveolae are rich in cholesterol and orchestrate cellular signaling events. Within caveola, the caveola-associated proteins, caveolins and cavins, are critical components for the formation of these lipid rafts, their dynamics, and cellular pathophysiology. Their alterations underlie human diseases such as lipodystrophy, muscular dystrophy, cardiovascular disease, and diabetes. The expression of caveolins and cavins is modulated in tumors and in tumor stroma, and their alterations are connected with cancer progression and treatment resistance. To date, although substantial breakthroughs in cancer drug development have been made, drug resistance remains a problem leading to treatment failures and challenging translation and bench-to-bedside research. Here, we summarize the current progress in understanding cancer drug resistance in the context of caveola-associated molecules and tumor stroma and discuss how we can potentially design therapeutic avenues to target these molecules in order to overcome treatment resistance.
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Affiliation(s)
- Jin-Yih Low
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA;
- Correspondence: ; Tel.: +1-410-502-9748; Fax: +1-410-502-2821
| | - Marikki Laiho
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA;
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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Zhou HH, Zhang YM, Zhang SP, Xu QX, Tian YQ, Li P, Cao D, Zheng YQ. Suppression of PTRF Alleviates Post-Infectious Irritable Bowel Syndrome via Downregulation of the TLR4 Pathway in Rats. Front Pharmacol 2021; 12:724410. [PMID: 34690766 PMCID: PMC8529073 DOI: 10.3389/fphar.2021.724410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 08/13/2021] [Indexed: 12/15/2022] Open
Abstract
Background: Accumulating evidence suggests that the polymerase I and transcript release factor (PTRF), a key component of the caveolae structure on the plasma membrane, plays a pivotal role in suppressing the progression of colorectal cancers. However, the role of PTRF in the development of functional gastrointestinal (GI) disorders remains unclear. Post-infectious irritable bowel syndrome (PI-IBS) is a common functional GI disorder that occurs after an acute GI infection. Here, we focused on the role of PTRF in the occurrence of PI-IBS and investigated the underlying mechanisms. Methods: Lipopolysaccharide (LPS) (5 μg/ml) was used to induce inflammatory injury in human primary colonic epithelial cells (HCoEpiCs). Furthermore, a rat model of PI-IBS was used to study the role of PTRF. Intestinal sensitivity was assessed based on the fecal water content. A two-bottle sucrose intake test was used to evaluate behavioral changes. Furthermore, shRNA-mediated knockdown of PTRF was performed both in vitro and in vivo. We detected the expression of PTRF in colonic mucosal tissues through immunohistochemistry (IHC), western blotting (WB), and immunofluorescence (IF) analysis. Luciferase activity was quantified using a luciferase assay. Co-localization of PTRF and Toll-like receptor 4 (TLR4) was detected using IF analysis. The activation of the signaling pathways downstream of TLR4, including the iNOs, p38, extracellular signal-regulated kinase (ERK), and c-Jun N-terminal kinase (JNK) pathways, was detected via WB. The levels of NO, IL-1β, IL-6, and TNF-α were measured using enzyme-linked immunosorbent assays. Results: LPS significantly induced PTRF expression and signaling downstream of TLR4, including p38, ERK, and JNK pathways, in HCoEpiCs. Moreover, shRNA-mediated knockdown of PTRF in HCoEpiCs significantly decreased the phosphorylation of JNK, ERK, and p38 and iNOS expression. In PI-IBS rats, the lack of PTRF not only reduced fecal water content and suppressed depressive behavior but also increased the body weight. Furthermore, we found a strong co-localization pattern for PTRF and TLR4. Consistently, the lack of PTRF impaired TLR4 signaling, as shown by the decreased levels of p-JNK, p-ERK, and p-p38, which are upstream factors involved in iNOS expression. Conclusion: PTRF promoted PI-IBS and stimulated TLR4 signaling both in vitro and in vivo. The results of this study not only enlighten the pathogenesis of PI-IBS but also help us understand the biological activity of PTRF and provide an important basis for the clinical treatment of PI-IBS by targeting PTRF.
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Affiliation(s)
| | | | | | | | | | | | - Di Cao
- Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Teaching and Research Section of Traditional Chinese Medicine, School of Pharmacy, Wannan Medical College, Wuhu, China
| | - Yong-qiu Zheng
- Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Teaching and Research Section of Traditional Chinese Medicine, School of Pharmacy, Wannan Medical College, Wuhu, China
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Tian Y, Liu X, Hu J, Zhang H, Wang B, Li Y, Fu L, Su R, Yu Y. Integrated Bioinformatic Analysis of the Expression and Prognosis of Caveolae-Related Genes in Human Breast Cancer. Front Oncol 2021; 11:703501. [PMID: 34513683 PMCID: PMC8427033 DOI: 10.3389/fonc.2021.703501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/31/2021] [Indexed: 12/21/2022] Open
Abstract
Caveolae-related genes, including CAVs that encodes caveolins and CAVINs that encodes caveolae-associated proteins cavins, have been identified for playing significant roles in a variety of biological processes including cholesterol transport and signal transduction, but evidences related to tumorigenesis and cancer progression are not abundant to correlate with clinical characteristics and prognosis of patients with cancer. In this study, we investigated the expression of these genes at transcriptional and translational levels in patients with breast cancer using Oncomine, Gene Expression Profiling Interactive Analysis (GEPIA), cBioPortal databases, and immunohistochemistry of the patients in our hospital. Prognosis of patients with breast cancer based on the expressions of CAVs and CAVINs was summarized using Kaplan-Meier Plotter with their correlation to different subtyping. The relevant molecular pathways of these genes were further analyzed using Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway database and Gene Set Enrichment Analysis (GSEA). Results elucidated that expression levels of CAV1, CAV2, CAVIN1, CAVIN2, and CAVIN3 were significantly lower in breast cancer tissues than in normal samples, while the expression level of CAVIN2 was correlated with advanced tumor stage. Furthermore, investigations on survival of patients with breast cancer indicated outstanding associations between prognosis and CAVIN2 levels, especially for the patients with estrogen receptor positive (ER+) breast cancer. In conclusion, our investigation indicated CAVIN2 is a potential therapeutic target for patients with ER+ breast cancer, which may relate to functions of cancer cell surface receptors and adhesion molecules.
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Affiliation(s)
- Yao Tian
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Xiaofeng Liu
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Jing Hu
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Huan Zhang
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Baichuan Wang
- Anhui Medical University Clinical College of Chest, Hefei, China.,Department of Thoracic Surgery, Anhui Chest Hospital, Hefei, China
| | - Yingxi Li
- Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Li Fu
- Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Department of Breast Cancer Pathology and Research Laboratory, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Ran Su
- School of Computer Software, College of Intelligence and Computing, Tianjin University, Tianjin, China
| | - Yue Yu
- The First Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China.,Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
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Bai L, Lyu Y, Shi G, Li K, Huang Y, Ma Y, Cong YS, Zhang L, Qin C. Polymerase I and transcript release factor transgenic mice show impaired function of hematopoietic stem cells. Aging (Albany NY) 2020; 12:20152-20162. [PMID: 33087586 PMCID: PMC7655181 DOI: 10.18632/aging.103729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022]
Abstract
The age-dependent decline in stem cell function plays a critical role in aging, although the molecular mechanisms remain unclear. PTRF/Cavin-1 is an essential component in the biogenesis and function of caveolae, which regulates cell proliferation, endocytosis, signal transduction and senescence. This study aimed to analyze the role of PTRF in hematopoietic stem cells (HSCs) senescence using PTRF transgenic mice. Flow cytometry was used to detect the frequency of immune cells and hematopoietic stem/progenitor cells (HSCs and HPCs). The results showed than the HSC compartment was significantly expanded in the bone marrow of PTRF transgenic mice compared to age-matched wild-type (WT) mice, and exhibited the senescent phenotype characterized by G1 cell cycle arrest, increased SA-β-Gal activity and high levels of reactive oxygen species (ROS). The PTRF-overexpressing HSCs also showed significantly lower self-renewal and ability to reconstitute hematopoiesis in vitro and in vivo. Real-time PCR was performed to analyze the expression levels of senescence-related genes. PTRF induced HSCs senescence via the ROS-p38-p16 and caveolin-1-p53-p21 pathways. Furthermore, the PTRF+cav-1-/- mice showed similar HSCs function as WT mice, indicating that PTRF induces senescence in HSCs partly through caveolin-1. Thus PTRF impaired HSCs aging partly via caveolin-1.
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Affiliation(s)
- Lin Bai
- NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China.,Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Beijing 100021, China
| | - Ying Lyu
- NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China.,Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Beijing 100021, China
| | - Guiying Shi
- NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China.,Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Beijing 100021, China
| | - Keya Li
- NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China.,Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Beijing 100021, China
| | - Yiying Huang
- NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China.,Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Beijing 100021, China
| | - Yuanwu Ma
- NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China.,Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Beijing 100021, China
| | - Yu-Sheng Cong
- Institute of Aging Research, Hangzhou Normal University School of Medicine, Hangzhou 310036, China
| | - Lianfeng Zhang
- NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China.,Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Beijing 100021, China
| | - Chuan Qin
- NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, CAMS&PUMC, Beijing 100021, China.,Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Beijing 100021, China
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Low JY, Brennen WN, Meeker AK, Ikonen E, Simons BW, Laiho M. Stromal CAVIN1 Controls Prostate Cancer Microenvironment and Metastasis by Modulating Lipid Distribution and Inflammatory Signaling. Mol Cancer Res 2020; 18:1414-1426. [PMID: 32493699 DOI: 10.1158/1541-7786.mcr-20-0364] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/01/2020] [Accepted: 05/28/2020] [Indexed: 11/16/2022]
Abstract
Lipid uptake occurs through caveolae, plasma membrane invaginations formed by caveolins (CAV) and caveolae-associated protein 1 (CAVIN1). Genetic alterations of CAV1N1 and CAV1 modify lipid metabolism and underpin lipodystrophy syndromes. Lipids contribute to tumorigenesis by providing fuel to cancer metabolism and supporting growth and signaling. Tumor stroma promotes tumor proliferation, invasion, and metastasis, but how stromal lipids influence these processes remain to be defined. Here, we show that stromal CAVIN1 regulates lipid abundance in the prostate cancer microenvironment and suppresses metastasis. We show that depletion of CAVIN1 in prostate stromal cells markedly reduces their lipid droplet accumulation and increases inflammation. Stromal cells lacking CAVIN1 enhance prostate cancer cell migration and invasion. Remarkably, they increase lipid uptake and M2 inflammatory macrophage infiltration in the primary tumors and metastasis to distant sites. Our data support the concept that stromal cells contribute to prostate cancer aggressiveness by modulating lipid content and inflammation in the tumor microenvironment. IMPLICATIONS: This study showed that stromal CAVIN1 suppresses prostate cancer metastasis by modulating tumor microenvironment, lipid content, and inflammatory response.
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Affiliation(s)
- Jin-Yih Low
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - W Nathaniel Brennen
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Alan K Meeker
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland.,Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland.,Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Elina Ikonen
- Faculty of Medicine, Anatomy and Stem Cells and Metabolism Research Program, University of Helsinki, Helsinki, Finland.,Minerva Foundation Institute for Medical Research, Helsinki, Finland
| | - Brian W Simons
- Center for Comparative Medicine, Baylor College of Medicine, Houston, Texas
| | - Marikki Laiho
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland. .,Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
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11
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Liebelt F, Schimmel J, Verlaan-de Vries M, Klemann E, van Royen ME, van der Weegen Y, Luijsterburg MS, Mullenders LH, Pines A, Vermeulen W, Vertegaal ACO. Transcription-coupled nucleotide excision repair is coordinated by ubiquitin and SUMO in response to ultraviolet irradiation. Nucleic Acids Res 2020; 48:231-248. [PMID: 31722399 PMCID: PMC7145520 DOI: 10.1093/nar/gkz977] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 10/08/2019] [Accepted: 10/14/2019] [Indexed: 12/04/2022] Open
Abstract
Cockayne Syndrome (CS) is a severe neurodegenerative and premature aging autosomal-recessive disease, caused by inherited defects in the CSA and CSB genes, leading to defects in transcription-coupled nucleotide excision repair (TC-NER) and consequently hypersensitivity to ultraviolet (UV) irradiation. TC-NER is initiated by lesion-stalled RNA polymerase II, which stabilizes the interaction with the SNF2/SWI2 ATPase CSB to facilitate recruitment of the CSA E3 Cullin ubiquitin ligase complex. However, the precise biochemical connections between CSA and CSB are unknown. The small ubiquitin-like modifier SUMO is important in the DNA damage response. We found that CSB, among an extensive set of other target proteins, is the most dynamically SUMOylated substrate in response to UV irradiation. Inhibiting SUMOylation reduced the accumulation of CSB at local sites of UV irradiation and reduced recovery of RNA synthesis. Interestingly, CSA is required for the efficient clearance of SUMOylated CSB. However, subsequent proteomic analysis of CSA-dependent ubiquitinated substrates revealed that CSA does not ubiquitinate CSB in a UV-dependent manner. Surprisingly, we found that CSA is required for the ubiquitination of the largest subunit of RNA polymerase II, RPB1. Combined, our results indicate that the CSA, CSB, RNA polymerase II triad is coordinated by ubiquitin and SUMO in response to UV irradiation. Furthermore, our work provides a resource of SUMO targets regulated in response to UV or ionizing radiation.
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Affiliation(s)
- Frauke Liebelt
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands
| | - Joost Schimmel
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands.,Department of Human Genetics, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands
| | - Matty Verlaan-de Vries
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands
| | - Esra Klemann
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands
| | - Martin E van Royen
- Department of Pathology, Cancer Treatment Screening Facility (CTSF), Erasmus Optical Imaging Centre (OIC), Erasmus University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
| | - Yana van der Weegen
- Department of Human Genetics, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands
| | - Martijn S Luijsterburg
- Department of Human Genetics, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands
| | - Leon H Mullenders
- Department of Human Genetics, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands.,Department of Genetics, Research Institute of Environmental Medicine (RIeM), Nagoya University, Japan
| | - Alex Pines
- Department of Molecular Genetics, Oncode Institute, Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Wim Vermeulen
- Department of Molecular Genetics, Oncode Institute, Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Alfred C O Vertegaal
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands
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12
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Ni Y, Hao J, Hou X, Du W, Yu Y, Chen T, Wei Z, Li Y, Zhu F, Wang S, Liang R, Li D, Lu Y, Liao K, Li B, Shi G. Dephosphorylated Polymerase I and Transcript Release Factor Prevents Allergic Asthma Exacerbations by Limiting IL-33 Release. Front Immunol 2018; 9:1422. [PMID: 29977243 PMCID: PMC6021487 DOI: 10.3389/fimmu.2018.01422] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 06/07/2018] [Indexed: 01/12/2023] Open
Abstract
Background Asthma is a chronic inflammatory disease characterized by airway inflammation and airway hyperresponsiveness (AHR). IL-33 is considered as one of the most critical molecules in asthma pathogenesis. IL-33 is stored in nucleus and passively released during necrosis. But little is known about whether living cells can release IL-33 and how this process is regulated. Objective We sought to investigate the role of polymerase I and transcript release factor (PTRF) in IL-33 release and asthma pathogenesis. Methods Ovalbumin (OVA)-induced asthma model in PTRF+/- mice were employed to dissect the role of PTRF in vivo. Then, further in vitro experiments were carried out to unwind the potential mechanism involved. Results In OVA asthma model with challenge phase, PTRF+/- mice showed a greater airway hyper-reaction, with an intense airway inflammation and more eosinophils in bronchoalveolar lavage fluid (BALF). Consistently, more acute type 2 immune response in lung and a higher IL-33 level in BALF were found in PTRF+/- mice. In OVA asthma model without challenge phase, airway inflammation and local type 2 immune responses were comparable between control mice and PTRF+/- mice. Knockdown of PTRF in 16HBE led to a significantly increased level of IL-33 in cell culture supernatants in response to LPS or HDM. Immunoprecipitation assay clarified Y158 as the major phosphorylation site of PTRF, which was also critical for the interaction of IL-33 and PTRF. Overexpression of dephosphorylated mutant Y158F of PTRF sequestered IL-33 in nucleus together with PTRF and limited IL-33 extracellular secretion. Conclusion Partial loss of PTRF led to a greater AHR and potent type 2 immune responses during challenge phase of asthma model, without influencing the sensitization phase. PTRF phosphorylation status determined subcellular location of PTRF and, therefore, regulated IL-33 release.
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Affiliation(s)
- Yingmeng Ni
- Department of Pulmonary and Critical Care Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jimin Hao
- Department of Pulmonary and Critical Care Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoxia Hou
- Department of Pulmonary and Critical Care Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Du
- Department of Pulmonary and Critical Care Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Youchao Yu
- Department of Pulmonary and Critical Care Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tiantian Chen
- Department of Pulmonary and Critical Care Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhuang Wei
- Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yangyang Li
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Fuxiang Zhu
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shuaiwei Wang
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Rui Liang
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Dan Li
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yue Lu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Kan Liao
- Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Bin Li
- Department of Immunology and Microbiology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Guochao Shi
- Department of Pulmonary and Critical Care Medicine, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Institute of Respiratory Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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13
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Li Q, Bai L, Shi G, Zhang L, Dai Y, Liu P, Cong YS, Wang M. Ptrf
transgenic mice exhibit obesity and fatty liver. Clin Exp Pharmacol Physiol 2018; 45:704-710. [DOI: 10.1111/1440-1681.12920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 01/16/2018] [Accepted: 01/18/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Qian Li
- Institute of Aging Research; Hangzhou Normal University School of Medicine; Hangzhou China
| | - Lin Bai
- Key Laboratory of Human Disease Comparative Medicine of the Ministry of Health; Institute of Laboratory Animal Science; Chinese Academy of Medical Sciences and Comparative Medical Center; Peking Union Medical College; Beijing China
| | - Guiying Shi
- Key Laboratory of Human Disease Comparative Medicine of the Ministry of Health; Institute of Laboratory Animal Science; Chinese Academy of Medical Sciences and Comparative Medical Center; Peking Union Medical College; Beijing China
| | - Lianfeng Zhang
- Key Laboratory of Human Disease Comparative Medicine of the Ministry of Health; Institute of Laboratory Animal Science; Chinese Academy of Medical Sciences and Comparative Medical Center; Peking Union Medical College; Beijing China
| | - Yifan Dai
- Center of Metabolic Disease Research; Nanjing Medical University; Nanjing China
| | - Pingsheng Liu
- National Laboratory of Biomacromolecules; Institute of Biophysics; Chinese Academy of Sciences; Beijing China
| | - Yu-Sheng Cong
- Institute of Aging Research; Hangzhou Normal University School of Medicine; Hangzhou China
| | - Miao Wang
- Institute of Aging Research; Hangzhou Normal University School of Medicine; Hangzhou China
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14
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Cavin-2 is a specific marker for detection of well-differentiated liposarcoma. Biochem Biophys Res Commun 2017; 493:660-665. [PMID: 28865960 DOI: 10.1016/j.bbrc.2017.08.135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 08/29/2017] [Indexed: 12/16/2022]
Abstract
Caveolae are cholesterol enriched invaginations of the plasma membrane involved in a variety of processes, including glucose and fatty acids absorption, cell transduction and mechanoprotection. The biogenesis and function of caveolae depend on the activity of Caveolin (Cav-1, -2 and -3) and Cavin (Cavin-1, -2, -3 and -4) protein families. Since the membrane Cavin-2 protein was reported to play a key role in caveolae formation of adipocytes, in this work we have used a multidisciplinary approach to investigate its expression in liposarcoma (LPS), an adipocytic soft tissue sarcoma affecting adults. Data obtained through an in silico and immunohistochemical analysis suggest that Cavin-2, along with Cavin-1, Cav-1 and Cav-2, is mostly expressed in the least aggressive LPS subtype, namely well-differentiated LPS, while is almost undetectable in the more aggressive myxoid, pleomorphic and dedifferentiated LPS tumors. Accordingly, in vitro analysis confirmed that Cavin-2 expression increases in LPS tumor cell lines during differentiation as compared to proliferation, as detected by immunoblotting and immunofluorescence analysis. Overall, these data suggest that Cavin-2 represents a useful marker for discriminating the degree of differentiation in LPS tumors.
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15
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Zhou LJ, Chen XY, Liu SP, Zhang LL, Xu YN, Mu PW, Geng DF, Tan Z. Downregulation of Cavin-1 Expression via Increasing Caveolin-1 Degradation Prompts the Proliferation and Migration of Vascular Smooth Muscle Cells in Balloon Injury-Induced Neointimal Hyperplasia. J Am Heart Assoc 2017; 6:e005754. [PMID: 28751541 PMCID: PMC5586430 DOI: 10.1161/jaha.117.005754] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 06/08/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Percutaneous coronary intervention has been widely used in the treatment of ischemic heart disease, but vascular restenosis is a main limitation of percutaneous coronary intervention. Our previous work reported that caveolin-1 had a key functional role in intimal hyperplasia, whereas whether Cavin-1 (another important caveolae-related protein) was involved is still unknown. Therefore, we will investigate the effect of Cavin-1 on neointimal formation. METHODS AND RESULTS Balloon injury markedly reduced Cavin-1 protein and enhanced ubiquitin protein expression accompanied with neointimal hyperplasia in injured carotid arteries, whereas Cavin-1 mRNA had no change. In cultured vascular smooth muscle cells (VSMCs), Cavin-1 was downregulated after inhibition of protein synthesis by cycloheximide, which was distinctly prevented by pretreatment with proteasome inhibitor MG132 but not by lysosomal inhibitor chloroquine, suggesting that proteasomal degradation resulted in Cavin-1 downregulation. Knockdown of Cavin-1 by local injection of Cavin-1 short hairpin RNA (shRNA) into balloon-injured carotid arteries in vivo promoted neointimal formation. In addition, inhibition or overexpression of Cavin-1 in cultured VSMCs in vitro prompted or suppressed VSMC proliferation and migration via increasing or decreasing extracellular signal-regulated kinase phosphorylation and matrix-degrading metalloproteinases-9 activity, respectively. However, under basic conditions, the effect of Cavin-1 on VSMC migration was stronger than on proliferation. Moreover, our results indicated that Cavin-1 regulated caveolin-1 expression via lysosomal degradation pathway. CONCLUSIONS Our study revealed the role and the mechanisms of Cavin-1 downregulation in neointimal formation by promoting VSMC proliferation, migration, and synchronously enhancing caveolin-1 lysosomal degradation. Cavin-1 may be a potential therapeutic target for the treatment of postinjury vascular remodeling.
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MESH Headings
- Angioplasty, Balloon/adverse effects
- Animals
- Carotid Artery Injuries/etiology
- Carotid Artery Injuries/genetics
- Carotid Artery Injuries/metabolism
- Carotid Artery Injuries/pathology
- Carotid Artery, External/metabolism
- Carotid Artery, External/pathology
- Caveolin 1/metabolism
- Cell Movement
- Cell Proliferation
- Cells, Cultured
- Disease Models, Animal
- Extracellular Signal-Regulated MAP Kinases/metabolism
- Lysosomes/metabolism
- Matrix Metalloproteinase 9/metabolism
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Muscle, Smooth, Vascular/injuries
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Neointima
- Proteasome Endopeptidase Complex/metabolism
- Proteolysis
- RNA Interference
- RNA, Small Interfering/administration & dosage
- RNA-Binding Proteins/genetics
- RNA-Binding Proteins/metabolism
- Rats, Sprague-Dawley
- Signal Transduction
- Time Factors
- Transfection
- Vascular Remodeling
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Affiliation(s)
- Li-Jun Zhou
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xue-Ying Chen
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Shui-Ping Liu
- Department of Forensic Pathology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Lin-Lin Zhang
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Ya-Nan Xu
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Pan-Wei Mu
- Department of Endocrinology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Deng-Feng Geng
- Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhi Tan
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
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16
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Codenotti S, Vezzoli M, Monti E, Fanzani A. Focus on the role of Caveolin and Cavin protein families in liposarcoma. Differentiation 2017; 94:21-26. [DOI: 10.1016/j.diff.2016.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/15/2016] [Accepted: 11/22/2016] [Indexed: 01/06/2023]
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17
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Tome ME, Herndon JM, Schaefer CP, Jacobs LM, Zhang Y, Jarvis CK, Davis TP. P-glycoprotein traffics from the nucleus to the plasma membrane in rat brain endothelium during inflammatory pain. J Cereb Blood Flow Metab 2016; 36:1913-1928. [PMID: 27466374 PMCID: PMC5094312 DOI: 10.1177/0271678x16661728] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 06/28/2016] [Indexed: 02/01/2023]
Abstract
P-glycoprotein (PgP), a drug efflux pump in blood-brain barrier endothelial cells, is a major clinical obstacle for effective central nervous system drug delivery. Identifying PgP regulatory pathways that can be exploited clinically is critical for improving central nervous system drug delivery. We previously found that PgP activity increases in rat brain microvessels concomitant with decreased central nervous system drug delivery in response to acute peripheral inflammatory pain. In the current study, we tested the hypothesis that PgP traffics to the luminal plasma membrane of the microvessel endothelial cells from intracellular stores during peripheral inflammatory pain. Using immunofluorescence microscopy, we detected PgP in endothelial cell nuclei and in the luminal plasma membrane in control animals. Following peripheral inflammatory pain, luminal PgP staining increased while staining in the nucleus decreased. Biochemical analysis of nuclear PgP content confirmed our visual observations. Peripheral inflammatory pain also increased endothelial cell luminal staining of polymerase 1 and transcript release factor/cavin1 and serum deprivation response protein/cavin2, two caveolar scaffold proteins, without changing caveolin1 or protein kinase C delta binding protein/cavin3 location. Our data (a) indicate that PgP traffics from stores in the nucleus to the endothelial cell luminal membrane in response to peripheral inflammatory pain; (b) provide an explanation for our previous observation that peripheral inflammatory pain inhibits central nervous system drug uptake; and (c) suggest a novel regulatory mechanism for PgP activity in rat brain.
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Affiliation(s)
- Margaret E Tome
- Department of Pharmacology, University of Arizona, Tucson, USA
| | | | | | - Leigh M Jacobs
- Department of Pharmacology, University of Arizona, Tucson, USA
| | - Yifeng Zhang
- Department of Pharmacology, University of Arizona, Tucson, USA
| | | | - Thomas P Davis
- Department of Pharmacology, University of Arizona, Tucson, USA
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18
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Mohamed BA, Asif AR, Schnelle M, Qasim M, Khadjeh S, Lbik D, Schott P, Hasenfuss G, Toischer K. Proteomic analysis of short-term preload-induced eccentric cardiac hypertrophy. J Transl Med 2016; 14:149. [PMID: 27234427 PMCID: PMC4884361 DOI: 10.1186/s12967-016-0898-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 05/07/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Hemodynamic load leads to cardiac hypertrophy and heart failure. While afterload (pressure overload) induces concentric hypertrophy, elevation of preload (volume overload) yields eccentric hypertrophy and is associated with a better outcome. Here we analysed the proteomic pattern of mice subjected to short-term preload. METHODS AND RESULTS Female FVB/N mice were subjected to aortocaval shunt-induced volume overload that leads to an eccentric hypertrophy (left ventricular weight/tibia length +31 %) with sustained systolic heart function at 1 week after operation. Two-dimensional gel electrophoresis (2-DE) followed by mass spectrometric analysis showed alteration in the expression of 25 protein spots representing 21 different proteins. 64 % of these protein spots were up-regulated and 36 % of the protein spots were consistently down-regulated. Interestingly, α-1-antitrypsin was down-regulated, indicating higher elastin degradation and possibly contributing to the early dilatation. In addition to contractile and mitochondrial proteins, polymerase I and transcript release factor protein (PTRF) was also up-regulated, possibly contributing to the preload-induced signal transduction. CONCLUSIONS Our findings reveal the proteomic changes of early-stage eccentric myocardial remodeling after volume overload. Induced expression of some of the respiratory chain enzymes suggests a metabolic shift towards an oxidative phosphorylation that might contribute to the favorable remodeling seen in early VO. Down-regulation of α-1-antitrypsin might contribute to extracellular matrix remodeling and left ventricular dilatation. We also identified PTRF as a potential signaling regulator of volume overload-induced cardiac hypertrophy.
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Affiliation(s)
- Belal A Mohamed
- Department of Cardiology and Pneumology, University Medical Center, Goettingen, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Goettingen, Germany.,Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Abdul R Asif
- Institute of Clinical Chemistry/UMG-Laboratories, University Medical Center, Goettingen, Germany
| | - Moritz Schnelle
- Department of Cardiology and Pneumology, University Medical Center, Goettingen, Germany
| | - Mohamed Qasim
- Institute of Clinical Chemistry/UMG-Laboratories, University Medical Center, Goettingen, Germany.,Department of Microbiology, Kohat University of Science and Technology, Kohat, Pakistan
| | - Sara Khadjeh
- Department of Cardiology and Pneumology, University Medical Center, Goettingen, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Goettingen, Germany
| | - Dawid Lbik
- Department of Cardiology and Pneumology, University Medical Center, Goettingen, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Goettingen, Germany
| | - Peter Schott
- Department of Cardiology and Pneumology, University Medical Center, Goettingen, Germany
| | - Gerd Hasenfuss
- Department of Cardiology and Pneumology, University Medical Center, Goettingen, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Goettingen, Germany
| | - Karl Toischer
- Department of Cardiology and Pneumology, University Medical Center, Goettingen, Germany. .,DZHK (German Centre for Cardiovascular Research), Partner Site Goettingen, Germany. .,Abteilung Kardiologie und Pneumologie, Universitätsmedizin Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
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19
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Low JY, D. Nicholson H. The up-stream regulation of polymerase-1 and transcript release factor(PTRF/Cavin-1) in prostate cancer: an epigenetic analysis. AIMS MOLECULAR SCIENCE 2016. [DOI: 10.3934/molsci.2016.3.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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20
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Low JY, Nicholson HD. Epigenetic modifications of caveolae associated proteins in health and disease. BMC Genet 2015; 16:71. [PMID: 26112043 PMCID: PMC4482180 DOI: 10.1186/s12863-015-0231-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 06/15/2015] [Indexed: 02/06/2023] Open
Abstract
Caveolae are small, “omega-shaped” invaginations at the plasma membrane of the cell which are involved in a variety of processes including cholesterol transport, potocytosis and cell signalling. Within caveolae there are caveolae-associated proteins, and changes in expression of these molecules have been described to play a role in the pathophysiology of various diseases including cancer and cardiovascular disease. Evidence is beginning to accumulate that epigenetic processes may regulate the expression of these caveolae related genes, and hence contribute to disease progression. Here, we summarize the current knowledge of the role of epigenetic modification in regulating the expression of these caveolae related genes and how this relates to changes in cellular physiology and in health and disease.
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Affiliation(s)
- Jin-Yih Low
- Department of Anatomy, Otago School of Medical Sciences, University of Otago, P.O. Box 913, Dunedin, 9054, New Zealand.
| | - Helen D Nicholson
- Department of Anatomy, Otago School of Medical Sciences, University of Otago, P.O. Box 913, Dunedin, 9054, New Zealand.
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21
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