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Wu Y, Chen D, Li L. Morinda officinalis polysaccharide promotes the osteogenic differentiation of human bone marrow-derived mesenchymal stem cells via microRNA-210-3p/scavenger receptor class A member 3. J Investig Med 2024; 72:370-382. [PMID: 38264863 DOI: 10.1177/10815589241229693] [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] [Indexed: 01/25/2024]
Abstract
Morinda officinalis polysaccharide (MOP) is the bioactive ingredient extracted from the root of Morinda officinalis, and Morinda officinalis is applied to treat osteoporosis (OP). The purpose of this study was to determine the role of MOP on human bone marrow mesenchymal stem cells (hBMSCs) and the underlying mechanism. HBMSCs were isolated from bone marrow samples of patients with OP and treated with MOP. Quantitative real-time polymerase chain reaction was adopted to quantify the expression of microRNA-210-3p (miR-210-3p) and scavenger receptor class A member 3 (SCARA3) mRNA. Cell Counting Kit-8 assay was employed to detect cell viability; Terminal-deoxynucleotidyl Transferase Mediated Nick End Labeling assay and flow cytometry were adopted to detect apoptosis; Alkaline Phosphatase (ALP) activity assay kit was applied to detect ALP activity; Western blot was executed to quantify the expression levels of SCARA3, osteogenic and adipogenic differentiation markers. Ovariectomized rats were treated with MOP. Bone mineral density (BMD), serum tartrate-resistant acid phosphatase 5b (TRACP 5b), and N-telopeptide of type I collagen (NTx) levels were assessed by BMD detector and Enzyme-linked immunosorbent assay kits. It was revealed that MOP could promote hBMSCs' viability and osteogenic differentiation and inhibit apoptosis and adipogenic differentiation. MOP could also upregulate SCARA3 expression through repressing miR-210-3p expression. Treatment with MOP increased the BMD and decreased the TRACP 5b and NTx levels in ovariectomized rats. MOP may boost the osteogenic differentiation and inhibit adipogenic differentiation of hBMSCs by miR-210-3p/SCARA3 axis.
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Affiliation(s)
- Yue Wu
- Department of Thoracic Surgery, The Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Dan Chen
- Department of Rehabilitation, The Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Longguang Li
- Department of Rehabilitation, The Third Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
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Zheng H, Aihaiti Y, Cai Y, Yuan Q, Yang M, Li Z, Xu K, Xu P. The m6A/m1A/m5C-Related Methylation Modification Patterns and Immune Landscapes in Rheumatoid Arthritis and Osteoarthritis Revealed by Microarray and Single-Cell Transcriptome. J Inflamm Res 2023; 16:5001-5025. [PMID: 37933335 PMCID: PMC10625757 DOI: 10.2147/jir.s431076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/13/2023] [Indexed: 11/08/2023] Open
Abstract
Purpose The goal of this study was to explore the expression characteristics of RNA modification-related genes, reveal immune landscapes and identify novel potential diagnostic biomarkers in osteoarthritis (OA) and rheumatoid arthritis (RA) patients. Patients and Methods RNA microarray and single-cell sequencing (scRNA-seq) data were downloaded from gene expression omnibus (GEO) database. Differentially expressed RNA modification-related genes were identified and then functionally annotated. Univariate logistic regression and lasso regression analysis were used to identify primary disease genes for OA and RA. Validation was done using scRNA-seq analysis and immunohistochemistry (IHC) in human knee synovial tissues and a murine destabilization of the medial meniscus (DMM) model. Through WGCNA analysis, genes associated with cell pyroptosis or autophagy in OA and RA were identified, which were then combined with differentially expressed RNA modification-related genes to construct a PPI interaction network. Furthermore, hub genes were selected for ceRNA interaction network analysis, correlation analysis with OA and RA molecular subtypes, as well as correlation analysis with 22 immune cells. Results Six RNA modification-related genes (ADAMDEC1, IGHM, OGN, TNFRSF11B, SCARA3 and PTN) were identified as potential OA and RA pathogenesis biomarkers. Their expression was validated in human knee synovial tissues and a murine DMM model. Functional enrichment of differentially expressed RNA modification-related genes between RA and OA was analyzed using GO, KEGG, GSEA, and GSVA. Based on WGCNA and PPI analysis, the six hub genes related to pyroptosis and RNA modification (CXCL10, CXCL9, CCR7, CCL5, CXCL1, and CCR2) were identified as central nodes for ceRNA interaction, correlation with OA and RA molecular subtypes, and association with 22 immune cells. Conclusion Our research revealed the significance of RNA modification-related genes in the development of OA and RA pathogenesis, thereby providing a novel research direction for understanding the mechanisms, diagnosis, and treatment of OA and RA.
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Affiliation(s)
- Haishi Zheng
- Department of Orthopedics, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, People’s Republic of China
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
| | - Yirixiati Aihaiti
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
| | - Yongsong Cai
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
| | - Qiling Yuan
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
| | - Mingyi Yang
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
| | - Zheng Li
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
| | - Ke Xu
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
| | - Peng Xu
- Department of Orthopedics, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, People’s Republic of China
- Department of Joint Surgery, HongHui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
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Chen X, Xu Y, Wang M, Ren C. Development of Prognostic Indicator Based on AU-Rich Elements-Related Genes in Glioblastoma. World Neurosurg 2023; 175:e601-e613. [PMID: 37030479 DOI: 10.1016/j.wneu.2023.03.148] [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: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 04/10/2023]
Abstract
BACKGROUND AREs (AU-rich elements) are important cis-acting short sequences in the 3'UTR (3'-untranslated region) that affect messenger RNA stability and translation. However, there were no systematic researches about AREs-related genes to predict the survival of patients with GBM (glioblastoma). METHODS Differentially expressed genes were acquired from The Cancer Genome Atlas and Chinese Glioma Genome Atlas databases. Differentially expressed AREs-related genes were filtered by overlapping differentially expressed genes and AREs-related genes. The prognostic genes were selected to construct a risk model. Patients with GBM were categorized into 2 risk groups depending on the medium value of risk score. Gene Set Enrichment Analysis was performed to explore the potential biological pathways. We explored the correlation between the risk model and immune cells. The chemotherapy sensitivity was predicted in different risk groups. RESULTS A risk model was constructed by 10 differentially expressed AREs-related genes (GNS, ANKH, PTPRN2, NELL1, PLAUR, SLC9A2, SCARA3, MAPK1, HOXB2, and EN2), and it could accurately predict the prognosis of patients with GBM. Higher risk scores for patients with GBM had a lower survival probability. The predictive power of risk model was decent. The risk score and treatment type were regarded as independent prognostic indicators. The mainly Gene Set Enrichment Analysis enrichment pathways were primary immunodeficiency and chemokine signaling pathway. Six immune cells were significant different in the 2 risk groups. There were higher abundance of macrophages M2 and neutrophils and higher sensitivity of 11 chemotherapy drugs in the high-risk group. CONCLUSIONS The 10 biomarkers might be important prognostic markers and potential therapeutic targets for patients with GBM.
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Affiliation(s)
- Xiao Chen
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong, University, Xi'an, Shaanxi, China; Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ying Xu
- Health information Services, The First Affiliated Hospital of Xi'an Jiaotong, University, Xi'an, Shaanxi, China
| | - Maode Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong, University, Xi'an, Shaanxi, China; Center for Brain Science, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chunying Ren
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong, University, Xi'an, Shaanxi, China; Gamma Knife Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Guo X, Liu Y, Liu J, Xu D, Chi C, Lv Z, Liu H. Sequence and functional features of a novel scavenger receptor homolog, SCARA5 from Yellow drum (Nibea albiflora). DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 135:104463. [PMID: 35690228 DOI: 10.1016/j.dci.2022.104463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 06/01/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
As an important member in SR-As, member 5 (SCARA5) can swallow apoptotic cells and foreign bodies, and participate multiple signaling pathways to inhibit tumor occurrence, development growth and metastasis. To explore its immune function, SCARA5 was identified from the yellow drum (Nibea albiflora) according to its transcriptome data, and its full-length cDNA was 6968 bp (named as NaSCARA5, GenBank accession no: MW070211) encoding 497 amino acids with a calculated molecular weight of 55.12 kDa, which had the typical motifs of SR family, such as transmembrane helix region, coil region, Pfam collagens region and SR region. BLASTp and the phylogenetic relationship analysis illustrated that the sequences shared high similarity with known SCARA5 of teleosts. Quantitative real time RT-PCR analysis showed that NaSCARA5 was expressed in intestine, stomach, liver, kidney, gill, heart and spleen, with the highest in the spleen (24.42-fold compared with that in heart). After being infected with Polyinosinic:polycytidylic acid (PolyI:C), Vibrio alginolyticus and Vibrio parahaemolyticus, NaSCARA5 mRNA were up-regulated with time dependent mode in spleen, which suggested that NaSCARA5 might play an important role in the immune process of fish. The extracellular domain of NaSCARA5 was successfully expressed in BL21 (DE3), and yielded the target protein of the expected size with many active sites for their conferring protein-protein interaction functions. After being purified by Ni-NAT Superflow resin and renatured, it was found to bind all the tested bacteria (V.parahaemolyticus,V.alginolyticus and Vibrio harveyi). The eukaryotic expression vector of the NaSCARA5-EGFP fusion protein was constructed and transferred into epithelioma papulosum cyprini (EPC) cells, and it was mainly expressed on the cell membrane indicating that NaSCARA5 was a typical transmembrane protein. The aforementioned results indicated that NaSCARA5 played a significant role in the defense against pathogenic bacteria infection as PRRs, which may provide some further understandings of the regulatory mechanisms in the fish innate immune system for SR family.
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Affiliation(s)
- Xiaoxian Guo
- National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316022, PR China
| | - Yue Liu
- National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316022, PR China
| | - Jiaxin Liu
- National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316022, PR China
| | - Dongdong Xu
- Marine Fishery Institute of Zhejiang Province, Key Lab of Mariculture and Enhancement of Zhejiang Province, Zhoushan, 316100, China
| | - Changfeng Chi
- National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316022, PR China
| | - Zhenming Lv
- National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316022, PR China
| | - Huihui Liu
- National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources, National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316022, PR China.
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Kim J, You HJ, Youn C. SCARA3 inhibits cell proliferation and EMT through AKT signaling pathway in lung cancer. BMC Cancer 2022; 22:552. [PMID: 35578316 PMCID: PMC9112459 DOI: 10.1186/s12885-022-09631-z] [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] [Received: 01/17/2022] [Accepted: 04/27/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Scavenger receptor class A member 3 (SCARA3) is decreased in prostate cancer and myeloma. However, functions of SCARA3 in various cancers remain unclear. In this study, we tried to evaluate the functional study of SCARA3 in lung cancer. METHODS The expression level of SCARA3 in the TCGA-database, lung cancer tissue microarray and lung cancer cells and the prognosis of lung cancer patients were measured. Lung cancer tissue microarray was analyzed pathologically using immunohistochemistry, and quantitative analysis of SCARA3 in normal lung cells and lung cancer cells was analyzed using western blot analysis. Survival curves for lung cancer patients were prepared with the Kaplan-Meier method. Migration and invasion of SCARA3 overexpressed lung cancer cells were determined using a Transwell chamber system. Proliferation of lung cancer cells was determined based on cell viability assay using cell culture in vitro and a tumorigenicity model of BALB/C nude mouse in vivo. RESULTS The expression of SCARA3 was abnormally reduced in TCGA-database, lung tissue microarray, and various lung cancer cells. However, overexpression of SCARA3 reduced the proliferation of lung cancer. The ability of SCARA3 to inhibit cancer cell proliferation was maintained even in vivo using a mouse xenograft model. In addition, overexpression of SCARA3 reduced migration and invasion ability of lung cancer cells and induced decreases of EMT markers such as β-catenin, vimentin, and MMP9. We aimed to prove the role of SCARA3 in the treatment of Lung cancer, and shown that the expression level of SCARA3 is important in cancer treatment using cisplatin. The enhancement of the effect of cisplatin according to SCARA3 overexpression is via the AKT and JNK pathways. CONCLUSIONS This study confirmed an abnormal decrease in SCARA3 in lung cancer. Overexpression of SCARA3 potently inhibited tumors in lung cancer and induced apoptosis by increasing sensitivity of lung cancer to cisplatin. These results suggest that SCARA3 is a major biomarker of lung cancer and that the induction of SCARA3 overexpression can indicate an effective treatment.
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Affiliation(s)
- Jeeho Kim
- Laboratory of Genomic Instability and Cancer therapeutics and Department of Pharmacology, Chosun University School of Medicine, 375 Seosuk-Dong, Gwangju, 501-759, South Korea.,Department of Pharmacology, Chosun University School of Medicine, 375 Seosuk-dong, Gwangju, 501-759, South Korea
| | - Ho Jin You
- Laboratory of Genomic Instability and Cancer therapeutics and Department of Pharmacology, Chosun University School of Medicine, 375 Seosuk-Dong, Gwangju, 501-759, South Korea. .,Department of Pharmacology, Chosun University School of Medicine, 375 Seosuk-dong, Gwangju, 501-759, South Korea.
| | - Chakyung Youn
- Department of Meridian & Acupoint∙Diagnosis College of Korean Medicine, Dongshin University 67, Dongsindae-gil, Naju-si, Jeollanam-do, Republic of Korea.
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Allegra A, Petrarca C, Di Gioacchino M, Casciaro M, Musolino C, Gangemi S. Modulation of Cellular Redox Parameters for Improving Therapeutic Responses in Multiple Myeloma. Antioxidants (Basel) 2022; 11:antiox11030455. [PMID: 35326105 PMCID: PMC8944660 DOI: 10.3390/antiox11030455] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 01/25/2023] Open
Abstract
Raised oxidative stress and abnormal redox status are typical features of multiple myeloma cells, and the identification of the intimate mechanisms that regulate the relationships between neoplastic cells and redox homeostasis may reveal possible new anti-myeloma therapeutic targets to increase the effectiveness of anti-myeloma drugs synergistically or to eradicate drug-resistant clones while reducing toxicity toward normal cells. An alteration of the oxidative state is not only responsible for the onset of multiple myeloma and its progression, but it also appears essential for the therapeutic response and for developing any chemoresistance. Our review aimed to evaluate the literature’s current data on the effects of oxidative stress on the response to drugs generally employed in the therapy of multiple myeloma, such as proteasome inhibitors, immunomodulators, and autologous transplantation. In the second part of the review, we analyzed the possibility of using other substances, often of natural origin, to modulate the oxidative stress to interfere with the progression of myelomatous disease.
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Affiliation(s)
- Alessandro Allegra
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, University of Messina, 98125 Messina, Italy;
- Correspondence: (A.A.); (M.D.G.)
| | - Claudia Petrarca
- Center for Advanced Studies and Technology, G. D’Annunzio University, 66100 Chieti, Italy;
- Institute for Clinical Immunotherapy and Advanced Biological Treatments, 65100 Pescara, Italy
| | - Mario Di Gioacchino
- Center for Advanced Studies and Technology, G. D’Annunzio University, 66100 Chieti, Italy;
- Institute for Clinical Immunotherapy and Advanced Biological Treatments, 65100 Pescara, Italy
- Correspondence: (A.A.); (M.D.G.)
| | - Marco Casciaro
- Unit and School of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (M.C.); (S.G.)
| | - Caterina Musolino
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood “Gaetano Barresi”, University of Messina, 98125 Messina, Italy;
| | - Sebastiano Gangemi
- Unit and School of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (M.C.); (S.G.)
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Motazedi E, Cheng W, Thomassen JQ, Frei O, Rongve A, Athanasiu L, Bahrami S, Shadrin A, Ulstein I, Stordal E, Brækhus A, Saltvedt I, Sando SB, O’Connell KS, Hindley G, van der Meer D, Bergh S, Nordestgaard BG, Tybjærg-Hansen A, Bråthen G, Pihlstrøm L, Djurovic S, Frikke-Schmidt R, Fladby T, Aarsland D, Selbæk G, Seibert TM, Dale AM, Fan CC, Andreassen OA. Using Polygenic Hazard Scores to Predict Age at Onset of Alzheimer's Disease in Nordic Populations. J Alzheimers Dis 2022; 88:1533-1544. [PMID: 35848024 PMCID: PMC10022308 DOI: 10.3233/jad-220174] [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] [Indexed: 11/15/2022]
Abstract
BACKGROUND Polygenic hazard scores (PHS) estimate age-dependent genetic risk of late-onset Alzheimer's disease (AD), but there is limited information about the performance of PHS on real-world data where the population of interest differs from the model development population and part of the model genotypes are missing or need to be imputed. OBJECTIVE The aim of this study was to estimate age-dependent risk of late-onset AD using polygenic predictors in Nordic populations. METHODS We used Desikan PHS model, based on Cox proportional hazards assumption, to obtain age-dependent hazard scores for AD from individual genotypes in the Norwegian DemGene cohort (n = 2,772). We assessed the risk discrimination and calibration of Desikan model and extended it by adding new genotype markers (the Desikan Nordic model). Finally, we evaluated both Desikan and Desikan Nordic models in two independent Danish cohorts: The Copenhagen City Heart Study (CCHS) cohort (n = 7,643) and The Copenhagen General Population Study (CGPS) cohort (n = 10,886). RESULTS We showed a robust prediction efficiency of Desikan model in stratifying AD risk groups in Nordic populations, even when some of the model SNPs were missing or imputed. We attempted to improve Desikan PHS model by adding new SNPs to it, but we still achieved similar risk discrimination and calibration with the extended model. CONCLUSION PHS modeling has the potential to guide the timing of treatment initiation based on individual risk profiles and can help enrich clinical trials with people at high risk to AD in Nordic populations.
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Affiliation(s)
- Ehsan Motazedi
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
| | - Weiqiu Cheng
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
| | - Jesper Q. Thomassen
- Department of Clinical Biochemistry, Copenhagen University Hospital – Rigshospitalet, 2100 Copenhagen, Denmark
| | - Oleksandr Frei
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
- Center for Bioinformatics, Department of Informatics, University of Oslo, PO box 1080, Blindern, 0316 Oslo, Norway
| | - Arvid Rongve
- Department of Clinical Medicine, University of Bergen, 5020 Bergen, Norway
| | - Lavinia Athanasiu
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
| | - Shahram Bahrami
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
| | - Alexey Shadrin
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
| | - Ingun Ulstein
- Department of Geriatric Medicine, Oslo University Hospital, Ullevål, 0424 Oslo, Norway
| | - Eystein Stordal
- Department of Neuromedicine and Movement Science (INB), NTNU, Faculty of Medicine and Health Sciences, N-7491 Trondheim, Norway
- Clinic of Psychiatry, Namsos Hospital, 7801 Namsos, Norway
| | - Anne Brækhus
- Department of Geriatric Medicine, Oslo University Hospital, Ullevål, 0424 Oslo, Norway
- Department of Neurology, Oslo University Hospital, 0424 Oslo, Norway
| | - Ingvild Saltvedt
- Department of Neuromedicine and Movement Science (INB), NTNU, Faculty of Medicine and Health Sciences, N-7491 Trondheim, Norway
- Department of geriatric medicine, Clinic of Medicine, St. Olavs Hospital, Trondheim university hospital, Trondheim, Norway
| | - Sigrid B. Sando
- Department of Neuromedicine and Movement Science (INB), NTNU, Faculty of Medicine and Health Sciences, N-7491 Trondheim, Norway
- University Hospital of Trondheim, Department of Neurology and Clinical Neurophysiology, Postboks 3250 Torgarden, N-7006 Trondheim, Norway
| | - Kevin S. O’Connell
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
| | - Guy Hindley
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
- Institute of Psychiatry, Psychology and Neuroscience, King’s College London, 16 De Crespigny Park, London, SE5 8AB
| | - Dennis van der Meer
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
- School for Mental Health and Neuroscience, Maastricht University, the Netherlands
| | - Sverre Bergh
- Research center for Age-related Functional Decline and Disease, Innlandet Hospital Trust, 2381 Brumunddal, Norway
- Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, 3103 Tønsberg, Norway
| | - Børge G. Nordestgaard
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Copenhagen University Hospital – Herlev Gentofte, 2730 Herlev, Denmark
| | - Anne Tybjærg-Hansen
- Department of Clinical Biochemistry, Copenhagen University Hospital – Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Geir Bråthen
- Department of Neuromedicine and Movement Science (INB), NTNU, Faculty of Medicine and Health Sciences, N-7491 Trondheim, Norway
- University Hospital of Trondheim, Department of Neurology and Clinical Neurophysiology, Postboks 3250 Torgarden, N-7006 Trondheim, Norway
| | - Lasse Pihlstrøm
- Department of Neurology, Oslo University Hospital, 0424 Oslo, Norway
| | - Srdjan Djurovic
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
- NORMENT Centre, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Ruth Frikke-Schmidt
- Department of Clinical Biochemistry, Copenhagen University Hospital – Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Tormod Fladby
- Department of Neuromedicine and Movement Science (INB), NTNU, Faculty of Medicine and Health Sciences, N-7491 Trondheim, Norway
- Klinikk for indremedisin og lab fag (AHUSKIL), Akershus University Hospital, 1478 Lørenskog, Norway
| | - Dag Aarsland
- Department of Old-Age Psychiatry, Stavanger University Hospital, 4011 Stavanger, Norway
- Department of Old Age Psychiatry, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, PO Box P070, De Crespigny Park, London SE5 8AF
| | - Geir Selbæk
- Department of Geriatric Medicine, Oslo University Hospital, Ullevål, 0424 Oslo, Norway
- Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, 3103 Tønsberg, Norway
- Faculty of Medicine, University of Oslo, PO BOX 1078 Blindern, 0316 Oslo, Norway
| | - Tyler M. Seibert
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
- Center for Multimodal Imaging and Genetics, University of California San Diego, La Jolla, CA 92093, USA
- Department of Radiology, University of California San Diego, La Jolla, CA, USA
- Department of Radiation Medicine, University of California San Diego, La Jolla, CA, USA
- Department of Bioengineering, University of California San Diego, La Jolla, CA
| | - Anders M. Dale
- Center for Multimodal Imaging and Genetics, University of California San Diego, La Jolla, CA 92093, USA
- Department of Radiology, University of California San Diego, La Jolla, CA, USA
- Department of Psychiatry, University of California San Diego, La Jolla, CA, USA
- Department of Neurosciences, University of California San Diego, La Jolla, CA, USA
| | - Chun C. Fan
- Center for Multimodal Imaging and Genetics, University of California San Diego, La Jolla, CA 92093, USA
- Department of Cognitive Science, University of California San Diego, La Jolla, CA, USA
- Population Neuroscience and Genetics Lab, University of California San Diego, La Jolla, CA, USA
| | - Ole A. Andreassen
- NORMENT Centre, Institute of Clinical Medicine, University of Oslo and Division of Mental Health and Addiction, Oslo University Hospital, 0407 Oslo, Norway
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PepFect14 Signaling and Transfection. Methods Mol Biol 2021. [PMID: 34766293 DOI: 10.1007/978-1-0716-1752-6_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
PepFect14 is a cell-penetrating peptide (CPP) derived from stearylated transportan-10 (strearil-TP10) with which it shares the stearic acid residue on C' terminus and the amino acid sequence except for lysines that in PepFect14 are substituted with ornithines. Being non-proteinogenic amino acids, ornithines make PepFect14 less sensitive to serum proteases and due to its positive charges the CPP can form complexes with negatively charged cargos, such as splice correcting oligonucleotides (SCOs), plasmid DNA (pDNA), and proteins. It has been reported that PepFect14/SCO complexes enter the cells mainly through endocytosis, in particular: macopinocitosys and caveolae-mediated endocytosis through the interaction with two receptors of the scavenger receptors class A family (SCARAs). PepFect14 and its complexes trigger the chaperone-mediated autophagy response involving the heat shock protein family (HSP70) whose inhibition leads to an increase of PepFect14 transfection efficacy. Exploiting the interaction between HSP70 and PepFect14 and their ability to form nanoparticle. HSP70 has been delivered in Bomirsky Hamster Melanoma cells (BHM) using PepFect14 of which a protocol is described at the end of this chapter.
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Dong X, Sun H, Mao J, Zhang S, Meng C. Differential expression of circular RNA in patients with white matter hyperintensity and cognitive impairment. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2021; 46:1080-1089. [PMID: 34911837 PMCID: PMC10930227 DOI: 10.11817/j.issn.1672-7347.2021.200692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Indexed: 11/03/2022]
Abstract
OBJECTIVES White matter hyperintensity (WMH) is an important factor leading to cognitive impairment, and the mechanism has not been clarified. In recent years, studies have found that circular RNA (circRNA) has differential expression in cerebrovascular diseases. This study aims to analyze the expression profile of circRNA in peripheral blood mononuclear cell (PBMC) of patients with WMH with cognitive impairment, to screen the differentially expressed circRNA, and to explore the possible role of circRNA in WMH with cognitive impairment. METHODS CircRNA microarray was used to detect the circRNA expression profile of PBMC in patients with WMH with cognitive impairment, and in patients with WMH without cognitive impairment as well as in normal controls (3 cases each, male to female ratio of 2꞉1). The differentially expressed circRNA in patients with WMH with cognitive impairment was screened. The screening criteria for differentially expressed circRNA was fold change (FC) ≥2.0 (|log2FC ≥1) and P<0.05. TargetScan and miRanda target gene analysis software were used to predict the relevant target miRNA, and Genespring software was used to predict the target genes. RESULTS Compared with the control group, there were 5 significantly up-regulated circRNA and 3 down-regulated circRNA in the WMH with cognitive impairment group; 8 circRNA were significantly up-regulated and 2 were down-regulated in the WMH without cognitive impairment group. When compared with the WMH with cognitive impairment group, no co-differentially expressed circRNA was found in WMH without cognitive impairment group and control group. Compared with the control group, the expression of hsa_circ_0092222 was up-regulated and the expressions of hsa_circ_0000662 and hsa_circ_0083773 were down-regulated in the WMH with cognitive impairment group and the WMH without cognitive impairment group, and there was no significant difference between the 2 groups (all P>0.05). Two target miRNA (hsa-miR-19a-3p and hsa-miR-19b-3p) of hsa_circ_0092222 were predicted, and the target gene was ribosomal protein S4, Y-linked 1 (RPS4Y1). Hsa_circ_0000662 predicted a target miRNA (hsa-miR-194) with axis inhibitor 1 (AXIN1) as the target gene. Hsa_circ_0083773 predicted 7 target miRNA, and the target gene was recombinant scavenger receptor class A member 3 (SCARA3). CONCLUSIONS The circRNA expression profile of patients with WMH is changed significantly. The differentially expressed circRNA may be the cause of WMH; Hsa_circ_0092222, hsa_circ_0000662, and hsa_circ_0083773 may regulate the expression of target genes by targeting adsorption of the target miRNA, leading to brain white matter damage through Janus kinase 2 (JAK2)/signal transducers and activators of transcription (STAT3) signal pathway and Wnt signal pathway.There is no significant difference in circRNA expression profile between WMH with or without cognitive impairment. Cognitive impairment in patients with WMH may have other reasons.
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Affiliation(s)
- Xuewei Dong
- Department of Neurology, First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China.
| | - Hongying Sun
- Department of Neurology, First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China.
| | - Jian Mao
- Department of Neurology, First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China
| | - Shuya Zhang
- Department of Neurology, First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China
| | - Chenxi Meng
- Department of Neurology, First Affiliated Hospital of Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China
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10
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Chen P, Hu B, Xie LQ, Jiang TJ, Xia ZY, Peng H. Scara3 regulates bone marrow mesenchymal stem cell fate switch between osteoblasts and adipocytes by promoting Foxo1. Cell Prolif 2021; 54:e13095. [PMID: 34254370 PMCID: PMC8349663 DOI: 10.1111/cpr.13095] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 02/06/2023] Open
Abstract
Objectives Scavenger receptor class A, member 3 (Scara3) was involved in adipogenesis. However, the effect of Scara3 on the switch between osteogenesis and adipogenesis of bone marrow mesenchymal stem cells (BMSCs) remains elusive. Materials and Methods The correlations between SCARA3 with the osteogenic‐related were analysed based on the GTEx database. The effects of Scara3 on osteogenic or adipogenic differentiation of BMSCs were evaluated by qPCR, Western blot (WB) and cell staining. The mechanisms of Scara3 regulating Foxo1 and autophagy were validated by co‐expression analysis, WB and immunofluorescence. In vivo, Scara3 adeno‐associated virus was injected into intra‐bone marrow of the aged mice and ovariectomized (OVX) mice whose phenotypes were confirmed by micro‐CT, calcein double labelling and immunochemistry (HE and OCN staining). Results SCARA3 was positively correlated with osteogenic‐related genes. Scara3 expression gradually decreased during adipogenesis but increased during osteogenesis. Moreover, the deletion of Scara3 favoured adipogenesis over osteogenesis, whereas overexpression of Scara3 significantly enhanced the osteogenesis at the expense of adipogenesis. Mechanistically, Scara3 controlled the cell fate by promoting Foxo1 expression and autophagy flux. In vivo, Scara3 promoted bone formation and reduced bone marrow fat accumulation in OVX mice. In the aged mice, Scara3 overexpression alleviated bone loss as well. Conclusions This study suggested that Scara3 regulated the switch between adipocyte and osteoblast differentiation, which represented a potential therapeutic target for bone loss and osteoporosis.
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Affiliation(s)
- Peng Chen
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China.,Department of Orthopedic, Xiangya Hospital of Central South University, Changsha, China
| | - Biao Hu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Ling-Qi Xie
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Tie-Jian Jiang
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Zhu-Ying Xia
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
| | - Hui Peng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, China
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11
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Deng F, Mu J, Qu C, Yang F, Liu X, Zeng X, Peng X. A Novel Prognostic Model of Endometrial Carcinoma Based on Clinical Variables and Oncogenomic Gene Signature. Front Mol Biosci 2021; 7:587822. [PMID: 33490103 PMCID: PMC7817972 DOI: 10.3389/fmolb.2020.587822] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 11/23/2020] [Indexed: 12/13/2022] Open
Abstract
Due to the difficulty in predicting the prognosis of endometrial carcinoma (EC) patients by clinical variables alone, this study aims to build a new EC prognosis model integrating clinical and molecular information, so as to improve the accuracy of predicting the prognosis of EC. The clinical and gene expression data of 496 EC patients in the TCGA database were used to establish and validate this model. General Cox regression was applied to analyze clinical variables and RNAs. Elastic net-penalized Cox proportional hazard regression was employed to select the best EC prognosis-related RNAs, and ridge regression was used to construct the EC prognostic model. The predictive ability of the prognostic model was evaluated by the Kaplan-Meier curve and the area under the receiver operating characteristic curve (AUC-ROC). A clinical-RNA prognostic model integrating two clinical variables and 28 RNAs was established. The 5-year AUC of the clinical-RNA prognostic model was 0.932, which is higher than that of the clinical-alone (0.897) or RNA-alone prognostic model (0.836). This clinical-RNA prognostic model can better classify the prognosis risk of EC patients. In the training group (396 patients), the overall survival of EC patients was lower in the high-risk group than in the low-risk group [HR = 32.263, (95% CI, 7.707-135.058), P = 8e-14]. The same comparison result was also observed for the validation group. A novel EC prognosis model integrating clinical variables and RNAs was established, which can better predict the prognosis and help to improve the clinical management of EC patients.
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Affiliation(s)
- Fang Deng
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Jing Mu
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Chiwen Qu
- School of Mathematics and Statistics, Hunan Normal University, Changsha, China
| | - Fang Yang
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Xing Liu
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Xiaomin Zeng
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Xiaoning Peng
- School of Mathematics and Statistics, Hunan Normal University, Changsha, China.,Department of Pathology and Pathophysiology, Hunan Normal University School of Medicine, Changsha, China.,Department of Pathophysiology, Jishou University School of Medicine, Jishou, China
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12
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Merid SK, Bustamante M, Standl M, Sunyer J, Heinrich J, Lemonnier N, Aguilar D, Antó JM, Bousquet J, Santa-Marina L, Lertxundi A, Bergström A, Kull I, Wheelock ÅM, Koppelman GH, Melén E, Gruzieva O. Integration of gene expression and DNA methylation identifies epigenetically controlled modules related to PM 2.5 exposure. ENVIRONMENT INTERNATIONAL 2021; 146:106248. [PMID: 33212358 DOI: 10.1016/j.envint.2020.106248] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/24/2020] [Accepted: 10/25/2020] [Indexed: 05/28/2023]
Abstract
Air pollution has been associated with adverse health effects across the life-course. Although underlying mechanisms are unclear, several studies suggested pollutant-induced changes in transcriptomic profiles. In this meta-analysis of transcriptome-wide association studies of 656 children and adolescents from three European cohorts participating in the MeDALL Consortium, we found two differentially expressed transcript clusters (FDR p < 0.05) associated with exposure to particulate matter < 2.5 µm in diameter (PM2.5) at birth, one of them mapping to the MIR1296 gene. Further, by integrating gene expression with DNA methylation using Functional Epigenetic Modules algorithms, we identified 9 and 6 modules in relation to PM2.5 exposure at birth and at current address, respectively (including NR1I2, MAPK6, TAF8 and SCARA3). In conclusion, PM2.5 exposure at birth was linked to differential gene expression in children and adolescents. Importantly, we identified several significant interactome hotspots of gene modules of relevance for complex diseases in relation to PM2.5 exposure.
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Affiliation(s)
- Simon Kebede Merid
- Department of Clinical Sciences and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden
| | - Mariona Bustamante
- ISGlobal, Institute for Global Health, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Marie Standl
- Institute of Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Jordi Sunyer
- ISGlobal, Institute for Global Health, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Joachim Heinrich
- Institute and Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Ziemssenstraße 1, 80336 Munich, Germany; Allergy and Lung Health Unit, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Australia
| | - Nathanaël Lemonnier
- Institute for Advanced Biosciences, UGA-INSERM U1209-CNRS UMR5309, Allée des Alpes, France
| | - Daniel Aguilar
- Biomedical Research Networking Center in Hepatic and Digestive Diseases (CIBEREHD), Instituto de Salud Carlos III, Barcelona, Spain
| | - Josep Maria Antó
- ISGlobal, Institute for Global Health, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Jean Bousquet
- Charité, Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Comprehensive Allergy Center, Department of Dermatology and Allergy, Berlin, Germany; University Hospital, Montpellier, France; MACVIA-France, Montpellier, France
| | - Loreto Santa-Marina
- Health Research Institute-BIODONOSTIA, Basque Country, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain; Health Department of Basque Government, Sub-directorate of Public Health of Gipuzkoa, 20013 San Sebastian, Spain
| | - Aitana Lertxundi
- Health Research Institute-BIODONOSTIA, Basque Country, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain; Preventive Medicine and Public Health Department, University of Basque Country (UPV/EHU), Spain
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, Sweden
| | - Inger Kull
- Department of Clinical Sciences and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden; Sachs Children's Hospital, Stockholm, Sweden
| | - Åsa M Wheelock
- Respiratory Medicine Unit, Department of Medicine and Center for Molecular Medicine, Karolinska Institutet, Solna, Stockholm, Sweden
| | - Gerard H Koppelman
- University of Groningen, University Medical Center Groningen, Beatrix Children's Hospital, Department of Pediatric Pulmonology and Pediatric Allergology, Groningen, the Netherlands; University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, the Netherlands
| | - Erik Melén
- Department of Clinical Sciences and Education, Karolinska Institutet, Södersjukhuset, Stockholm, Sweden; Sachs Children's Hospital, Stockholm, Sweden
| | - Olena Gruzieva
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, Sweden.
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13
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Li X, Meng Y. Analyses of metastasis-associated genes in IDH wild-type glioma. BMC Cancer 2020; 20:1114. [PMID: 33198677 PMCID: PMC7670782 DOI: 10.1186/s12885-020-07628-0] [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: 06/22/2020] [Accepted: 11/11/2020] [Indexed: 12/15/2022] Open
Abstract
Background Glioma is the most common malignant tumor of the brain. The existence of metastatic tumor cells is an important cause of recurrence even after radical glioma resection. Methods Single-cell sequencing data and high-throughput data were downloaded from GEO database and TCGA/CGGA database. By means of PCA and tSNE clustering methods, metastasis-associated genes in glioma were identified. GSEA explored possible biological functions that these metastasis-associated genes may participate in. Univariate and multivariate Cox regression were used to construct a prognostic model. Results Glioma metastatic cells and metastasis-associated genes were identified. The prognostic model based on metastasis-associated genes had good sensitivity and specificity for the prognosis of glioma. These genes may be involved in signal pathways such as cellular protein catabolic process, p53 signaling pathway, transcriptional misregulation in cancer and JAK-STAT signaling pathway. Conclusion This study explored glioma metastasis-associated genes through single-cell sequencing data mining, and aimed to identify prognostic metastasis-associated signatures for glioma and may provide potential targets for further cancer research.
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Affiliation(s)
- Xiaozhi Li
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yutong Meng
- Department of Stomatology, Shengjing Hospital of China Medical University, No. 36 Sanhao Street, Shenyang, Liaoning Province, 110004, People's Republic of China.
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14
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Vitorino Carvalho A, Eozenou C, Richard C, Forde N, Healey GD, Giraud-Delville C, Mansouri-Attia N, Lonergan P, Sheldon IM, Sandra O. Bovine scavenger receptor class A (SR-A) exhibit specific patterns of regulation in the endometrium during the oestrous cycle and early pregnancy. Reprod Fertil Dev 2020; 31:1078-1090. [PMID: 30922439 DOI: 10.1071/rd18411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 01/14/2019] [Indexed: 01/04/2023] Open
Abstract
In mammals, tight regulation of maternal endometrial function is critical for pregnancy success. In bovine species, endometrial expression of members of the scavenger receptor class A (SR-A) has been listed in high-throughput analyses, but very little is known about the involvement of these immune factors during implantation in mammals. To provide first insights into the contribution of SR-A to endometrial physiology, we analysed the expression and regulation of all members of SR-A (SR-A1, SR-A3-SR-A6) during the oestrous cycle and early pregnancy in cattle. Levels of SR-A1 were increased on Day 20 of pregnancy, whereas SR-A3 levels were increased on Day 13 of the oestrous cycle and of the pregnancy. Although SR-A4 levels were reduced on Day 20 of the oestrous cycle, they remained high in pregnant animals. SR-A5 levels increased by Day 13 of the oestrous cycle and decreased on Day 20, but remained high in pregnant animals. Interferon-τ does not affect SR-A gene expression, whereas progesterone regulates the expression of the SR-A3 and SR-A5 transcripts. Endometrial SR-A3 appeared significantly higher in cows carrying invitro-produced embryos than in AI cows. Our data suggest that members of the SR-A family are involved in endometrial remodelling and regulation of endometrial gland physiology, both processes being critical for implantation in mammals.
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Affiliation(s)
- A Vitorino Carvalho
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350, Jouy en Josas, France; and Present address: BOA, INRA, Université de Tours, 37380 Nouzilly, France; and Corresponding author.
| | - C Eozenou
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350, Jouy en Josas, France; and Present address: Human Developmental Genetics, Institut Pasteur, Paris, 75724, France
| | - C Richard
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350, Jouy en Josas, France
| | - N Forde
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - G D Healey
- Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - C Giraud-Delville
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350, Jouy en Josas, France
| | - N Mansouri-Attia
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350, Jouy en Josas, France; and Present address: Braverman IVF and Reproductive Immunology, 888 Park Avenue, New York City, NY 10075, USA
| | - P Lonergan
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - I M Sheldon
- Institute of Life Science, Swansea University Medical School, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - O Sandra
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350, Jouy en Josas, France
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15
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Manni S, Fregnani A, Barilà G, Zambello R, Semenzato G, Piazza F. Actionable Strategies to Target Multiple Myeloma Plasma Cell Resistance/Resilience to Stress: Insights From "Omics" Research. Front Oncol 2020; 10:802. [PMID: 32500036 PMCID: PMC7243738 DOI: 10.3389/fonc.2020.00802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 04/23/2020] [Indexed: 12/20/2022] Open
Abstract
While the modern therapeutic armamentarium to treat multiple myeloma (MM) patients allows a longer control of the disease, this second-most-frequent hematologic cancer is still uncurable in the vast majority of cases. Since MM plasma cells are subjected to various types of chronic cellular stress and the integrity of specific stress-coping pathways is essential to ensure MM cell survival, not surprisingly the most efficacious anti-MM therapy are those that make use of proteasome inhibitors and/or immunomodulatory drugs, which target the biochemical mechanisms of stress management. Based on this notion, the recently realized discoveries on MM pathobiology through high-throughput techniques (genomic, transcriptomic, and other "omics"), in order for them to be clinically useful, should be elaborated to identify novel vulnerabilities in this disease. This groundwork of information will likely allow the design of novel therapies against targetable molecules/pathways, in an unprecedented opportunity to change the management of MM according to the principle of "precision medicine." In this review, we will discuss some examples of therapeutically actionable molecules and pathways related to the regulation of cellular fitness and stress resistance in MM.
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Affiliation(s)
- Sabrina Manni
- Department of Medicine, Hematology and Clinical Immunology Branch, University of Padova, Padova, Italy
- Foundation for Advanced Biomedical Research – Veneto Institute of Molecular Medicine (FABR-VIMM), Padova, Italy
| | - Anna Fregnani
- Foundation for Advanced Biomedical Research – Veneto Institute of Molecular Medicine (FABR-VIMM), Padova, Italy
- Department of Surgery, Oncology and Gastroenterology (DISCOG), University of Padova, Padova, Italy
| | - Gregorio Barilà
- Department of Medicine, Hematology and Clinical Immunology Branch, University of Padova, Padova, Italy
- Foundation for Advanced Biomedical Research – Veneto Institute of Molecular Medicine (FABR-VIMM), Padova, Italy
| | - Renato Zambello
- Department of Medicine, Hematology and Clinical Immunology Branch, University of Padova, Padova, Italy
- Foundation for Advanced Biomedical Research – Veneto Institute of Molecular Medicine (FABR-VIMM), Padova, Italy
| | - Gianpietro Semenzato
- Department of Medicine, Hematology and Clinical Immunology Branch, University of Padova, Padova, Italy
- Foundation for Advanced Biomedical Research – Veneto Institute of Molecular Medicine (FABR-VIMM), Padova, Italy
| | - Francesco Piazza
- Department of Medicine, Hematology and Clinical Immunology Branch, University of Padova, Padova, Italy
- Foundation for Advanced Biomedical Research – Veneto Institute of Molecular Medicine (FABR-VIMM), Padova, Italy
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16
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Pogribna M, Koonce NA, Mathew A, Word B, Patri AK, Lyn-Cook B, Hammons G. Effect of titanium dioxide nanoparticles on DNA methylation in multiple human cell lines. Nanotoxicology 2020; 14:534-553. [PMID: 32031460 DOI: 10.1080/17435390.2020.1723730] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/07/2020] [Accepted: 01/24/2020] [Indexed: 12/27/2022]
Abstract
Nanoscale titanium dioxide (TiO2) is manufactured in wide scale, with a range of applications in consumer products. Significant toxicity of TiO2 nanoparticles has, however, been recognized, suggesting considerable risk to human health. To evaluate fully their toxicity, assessment of the epigenetic action of these nanoparticles is critical. However, only few studies are available examining capability of nanoparticles to alter epigenetic integrity. In the present study, the effect of TiO2 nanoparticles exposure on DNA methylation, a major epigenetic mechanism, was investigated in in vitro cellular model systems. A panel of cells relevant to portals of human exposure (Caco-2 (colorectal), HepG2 (liver), NL20 (lung), and A-431 (skin)) was exposed to TiO2 nanoparticles to assess effects on global methylation, gene-specific methylation, and expression levels of DNA methyltransferases, MBD2, and UHRF1. Global methylation was determined by enzyme-linked immunosorbent assay-based immunochemical analysis. Degree of promoter methylation across a defined panel of genes was evaluated using EpiTect Methyl II Signature PCR System Array technology. Expression of DNMT1, DNMT3a, DNMT3b, MBD2, and URHF1 was quantified by qRT-PCR. Decrease in global DNA methylation in cell lines Caco-2, HepG2, and A-431 exposed to TiO2 nanoparticles was shown. Across four cell lines, eight genes (CDKN1A, DNAJC15, GADD45A, GDF15, INSIG1, SCARA3, TP53, and BNIP3) were identified in which promotors were methylated after exposure. Altered expression of these genes is associated with disease etiology. The results also revealed aberrant expression of epigenetic regulatory genes involved in DNA methylation (DNMT1, DNMT3a, DNMT3b, MBD2, and UHRF1) in TiO2 exposed cells, which was cell type dependent. Findings from this study clearly demonstrate the impact of TiO2 nanoparticles exposure on DNA methylation in multiple cell types, supporting potential involvement of this epigenetic mechanism in the toxicity of TiO2 nanoparticles. Hence for complete assessment of potential risk from nanoparticle exposure, epigenetic studies are critical.
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Affiliation(s)
- Marta Pogribna
- Division of Biochemical Toxicity, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Nathan A Koonce
- Nanotechology Core, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Ammu Mathew
- Nanotechology Core, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Beverly Word
- Division of Biochemical Toxicity, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Anil K Patri
- Nanotechology Core, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - Beverly Lyn-Cook
- Division of Biochemical Toxicity, FDA/National Center for Toxicological Research, Jefferson, AR, USA
| | - George Hammons
- Division of Biochemical Toxicity, FDA/National Center for Toxicological Research, Jefferson, AR, USA
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17
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Shahid M, Idrees M, Butt AM, Raza SM, Amin I, Rasul A, Afzal S. Blood-based gene expression profile of oxidative stress and antioxidant genes for identifying surrogate markers of liver tissue injury in chronic hepatitis C patients. Arch Virol 2020; 165:809-822. [PMID: 32103340 DOI: 10.1007/s00705-020-04564-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 01/27/2020] [Indexed: 12/16/2022]
Abstract
Oxidative stress is the process by which reactive molecules and free radicals are formed in cells. In this study, we report the blood-based gene expression profile of oxidative stress and antioxidant genes for identifying surrogate markers of liver tissue in chronic hepatitis C (CHC) patients by using real-time PCR. A total of 144 untreated patients diagnosed with CHC having genotype 3a and 20 healthy controls were selected for the present study. Liver biopsy staging and grading of CHC patients were performed using the METAVIR score. Total RNA was extracted from liver tissue and blood samples, followed by cDNA synthesis and real-time PCR. The relative expression of genes was calculated using the ΔΔCt method. The expression profile of 84 genes associated with oxidative stress and antioxidants was determined in liver tissue and blood samples. In liver tissue, 46 differentially expressed genes (upregulated, 27; downregulated, 19) were identified in CHC patients compared to normal samples. In blood, 61 genes (upregulated, 51; downregulated; 10) were significantly expressed in CHC patients. A comparison of gene expression in liver and whole blood showed that 20 genes were expressed in a similar manner in the liver and blood. The expression levels of commonly expressed liver and blood-based genes were also correlated with clinical factors in CHC patients. A receiver operating curve (ROC) analysis of oxidative stress genes (ALB, CAT, DHCR24, GPX7, PRDX5, and MBL2) showed that infections in patients with CHC can be distinguished from healthy controls. In conclusion, blood-based gene expression can reflect the behavior of oxidative stress genes in liver tissue, and this blood-based gene expression study in CHC patients explores new blood-based non-invasive biomarkers that represent liver damage.
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Affiliation(s)
- Muhammad Shahid
- Divison of Molecular Virology, National Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan.
| | - Muhammad Idrees
- Divison of Molecular Virology, National Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan.,Hazara University, Mansehra, Pakistan
| | - Azeem Mehmood Butt
- Divison of Molecular Virology, National Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan.,Department of Bioscience, COMSATS University Islamabad, Islamabad, Pakistan
| | - Syed Mohsin Raza
- Divison of Molecular Virology, National Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan.,Institute of Biomedical and Allied Health Sciences, University of Health Science, Lahore, Pakistan
| | - Iram Amin
- Divison of Molecular Virology, National Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Afza Rasul
- Department of Statistic, Lahore College for Women University, Lahore, Pakistan
| | - Samia Afzal
- Divison of Molecular Virology, National Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
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Underestimated Aspect of Mucopolysaccharidosis Pathogenesis: Global Changes in Cellular Processes Revealed by Transcriptomic Studies. Int J Mol Sci 2020; 21:ijms21041204. [PMID: 32054071 PMCID: PMC7072725 DOI: 10.3390/ijms21041204] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/31/2020] [Accepted: 02/07/2020] [Indexed: 12/13/2022] Open
Abstract
Mucopolysaccharidoses (MPS), a group of inherited metabolic disorders caused by deficiency in enzymes involved in degradation of glycosaminoglycans (GAGs), are examples (and models) of monogenic diseases. Accumulation of undegraded GAGs in lysosomes was supposed to be the major cause of MPS symptoms; however, their complexity and variability between particular types of the disease can be hardly explained by such a simple storage mechanism. Here we show that transcriptomic (RNA-seq) analysis of the material derived from fibroblasts of patients suffering from all types and subtypes of MPS, supported by RT-qPCR results, revealed surprisingly large changes in expression of genes involved in various cellular processes, indicating complex mechanisms of MPS. Although each MPS type and subtype was characterized by specific changes in gene expression profile, there were genes with significantly changed expression relative to wild-type cells that could be classified as common for various MPS types, suggesting similar disturbances in cellular processes. Therefore, both common features of all MPS types, and differences between them, might be potentially explained on the basis of changes in certain cellular processes arising from disturbed regulations of genes’ expression. These results may shed a new light on the mechanisms of genetic diseases, indicating how a single mutation can result in complex pathomechanism, due to perturbations in the network of cellular reactions. Moreover, they should be considered in studies on development of novel therapies, suggesting also why currently available treatment methods fail to correct all/most symptoms of MPS. We propose a hypothesis that disturbances in some cellular processes cannot be corrected by simple reduction of GAG levels; thus, combined therapies are necessary which may require improvement of these processes.
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Tian Y, Zhou K, Hu J, Shan MF, Chen HJ, Cheng S, Liu LF, Mei XL. Scavenger receptor class a, member 3 is associated with severity of hand, foot, and mouth disease in a case-control study. Medicine (Baltimore) 2019; 98:e17471. [PMID: 31577778 PMCID: PMC6783241 DOI: 10.1097/md.0000000000017471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Hand, foot, and mouth disease (HFMD) spreads rapidly and has been recognized as a public health problem in recent years in China. Unfortunately, there is no effective vaccine or antiviral drug currently for EV71 infection. In this study, we aim to identify biomarker which are associated with for severity of EV71 infection cases using high-throughput RNA sequencing approach.RNA sequencing of samples from severe HFMD (S) patients group (n = 10) and control HFMD (C) patients group (n = 10) were performed and the results were verified by qPCR. mRNA with the highest expression level was selected to be validated in an independent cohort comprising of 45 severe EV71 infected patients and 45 control by qPCR assay.Seventeen significant differentially expressed genes were identified. Scavenger receptor class A, member 3 (SCARA3) was one of the significantly upregulated genes with the highest expression level and was selected for validation. The mean relative expression levels in severe HFMD and control HFMD patients were 10.1-fold and 5.0-fold, respectively, P value <.001.We found that SCARA3 is associated with severity of HFMD, and it may be a potential prognostic marker to predict the HFMD progression in EV71 infected patients.
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20
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Bennett C, Mohammed F, Álvarez-Ciara A, Nguyen MA, Dietrich WD, Rajguru SM, Streit WJ, Prasad A. Neuroinflammation, oxidative stress, and blood-brain barrier (BBB) disruption in acute Utah electrode array implants and the effect of deferoxamine as an iron chelator on acute foreign body response. Biomaterials 2019; 188:144-159. [PMID: 30343257 PMCID: PMC6300159 DOI: 10.1016/j.biomaterials.2018.09.040] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/20/2018] [Accepted: 09/24/2018] [Indexed: 02/06/2023]
Abstract
The use of intracortical microelectrode arrays has gained significant attention in being able to help restore function in paralysis patients and study the brain in various neurological disorders. Electrode implantation in the cortex causes vasculature or blood-brain barrier (BBB) disruption and thus elicits a foreign body response (FBR) that results in chronic inflammation and may lead to poor electrode performance. In this study, a comprehensive insight into the acute molecular mechanisms occurring at the Utah electrode array-tissue interface is provided to understand the oxidative stress, neuroinflammation, and neurovascular unit (astrocytes, pericytes, and endothelial cells) disruption that occurs following microelectrode implantation. Quantitative real time polymerase chain reaction (qRT-PCR) was used to quantify the gene expression at acute time-points of 48-hr, 72-hr, and 7-days for factors mediating oxidative stress, inflammation, and BBB disruption in rats implanted with a non-functional 4 × 4 Utah array in the somatosensory cortex. During vascular disruption, free iron released into the brain parenchyma can exacerbate the FBR, leading to oxidative stress and thus further contributing to BBB degradation. To reduce the free iron released into the brain tissue, the effects of an iron chelator, deferoxamine mesylate (DFX), was also evaluated.
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Affiliation(s)
- Cassie Bennett
- Department of Biomedical Engineering, University of Miami, FL, USA
| | - Farrah Mohammed
- Department of Biomedical Engineering, University of Miami, FL, USA
| | | | | | | | - Suhrud M Rajguru
- Department of Biomedical Engineering, University of Miami, FL, USA
| | | | - Abhishek Prasad
- Department of Biomedical Engineering, University of Miami, FL, USA.
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21
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Diao R, Mu X, Wang T, Li S. Risk score based on ten lncRNA-mRNA expression predicts the survival of stage II-III colorectal carcinoma. PLoS One 2017; 12:e0182908. [PMID: 28796819 PMCID: PMC5552098 DOI: 10.1371/journal.pone.0182908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 07/26/2017] [Indexed: 11/22/2022] Open
Abstract
The prognosis of colorectal carcinoma (CRC) is unstable in the stage II-III patients. Patients with early stage II CRC have a relative poor prognosis while other stage III CRC patients have a better prognosis. In our work, by utilizing the expression of lncRNAs and mRNAs measured by microarray (GSE39582), we constructed a risk score staging system with Cox multivariate regression model to predict the outcome of grade II-III CRC patients. Ten genes including two lncRNAs and eight mRNAs were used to estimate the survival of stage II-III CRC patients. The patients with high risk scores have poorer survival rate those with low risk scores, significantly. These results were further validated in another three independent datasets (GSE37892, GSE33113, and GSE17536). The relationship between clinical information and were evaluated, and the risk score is independent from the other clinical information and performs better in evaluating the survival of stage II-III CRC patients. Moreover, the correlation between chemotherapy was also evaluated, and we found that both patients with or without chemotherapy have a poor survival in high risk group. Gene Set Enrichment Analysis were used to find the difference between high-risk and low-risk groups, and pathways including cell adhesion and focal adhesion were significantly enriched, suggesting that the risk score reflects the status of cell-cell physical interaction. In summary, we constructed a risk staging model for grade II-III CRC, which is independent from and performs better than clinical information.
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Affiliation(s)
- Ruigang Diao
- Yangtai Yuhuangding Hospital, Zhifu District, Yantai, Shandong Province, China
| | - Xiaodong Mu
- Yangtai Yuhuangding Hospital, Zhifu District, Yantai, Shandong Province, China
| | - Tingting Wang
- Yangtai Yuhuangding Hospital, Zhifu District, Yantai, Shandong Province, China
| | - Shuqing Li
- Yangtai Yuhuangding Hospital, Zhifu District, Yantai, Shandong Province, China
- * E-mail:
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22
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Guadagno NA, Moriconi C, Licursi V, D'Acunto E, Nisi PS, Carucci N, De Jaco A, Cacci E, Negri R, Lupo G, Miranda E. Neuroserpin polymers cause oxidative stress in a neuronal model of the dementia FENIB. Neurobiol Dis 2017; 103:32-44. [PMID: 28363799 PMCID: PMC5439028 DOI: 10.1016/j.nbd.2017.03.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 03/10/2017] [Accepted: 03/26/2017] [Indexed: 01/20/2023] Open
Abstract
The serpinopathies are human pathologies caused by mutations that promote polymerisation and intracellular deposition of proteins of the serpin superfamily, leading to a poorly understood cell toxicity. The dementia FENIB is caused by polymerisation of the neuronal serpin neuroserpin (NS) within the endoplasmic reticulum (ER) of neurons. With the aim of understanding the toxicity due to intracellular accumulation of neuroserpin polymers, we have generated transgenic neural progenitor cell (NPC) cultures from mouse foetal cerebral cortex, stably expressing the control protein GFP (green fluorescent protein), or human wild type, G392E or delta NS. We have characterised these cell lines in the proliferative state and after differentiation to neurons. Our results show that G392E NS formed polymers that were mostly retained within the ER, while wild type NS was correctly secreted as a monomeric protein into the culture medium. Delta NS was absent at steady state due to its rapid degradation, but it was easily detected upon proteasomal block. Looking at their intracellular distribution, wild type NS was found in partial co-localisation with ER and Golgi markers, while G392E NS was localised within the ER only. Furthermore, polymers of NS were detected by ELISA and immunofluorescence in neurons expressing the mutant but not the wild type protein. We used control GFP and G392E NPCs differentiated to neurons to investigate which cellular pathways were modulated by intracellular polymers by performing RNA sequencing. We identified 747 genes with a significant upregulation (623) or downregulation (124) in G392E NS-expressing cells, and we focused our attention on several genes involved in the defence against oxidative stress that were up-regulated in cells expressing G392E NS (Aldh1b1, Apoe, Gpx1, Gstm1, Prdx6, Scara3, Sod2). Inhibition of intracellular anti-oxidants by specific pharmacological reagents uncovered the damaging effects of NS polymers. Our results support a role for oxidative stress in the cellular toxicity underlying the neurodegenerative dementia FENIB.
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Affiliation(s)
- Noemi A Guadagno
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy
| | - Claudia Moriconi
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy
| | - Valerio Licursi
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy; Institute for Systems Analysis and Computer Science 'Antonio Ruberti', National Research Council, Rome, Italy
| | - Emanuela D'Acunto
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy
| | - Paola S Nisi
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy
| | - Nicoletta Carucci
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy
| | - Antonella De Jaco
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy
| | - Emanuele Cacci
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy
| | - Rodolfo Negri
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy; Institute of Biology and Molecular Pathology (IBPM), National Research Council, Rome, Italy
| | - Giuseppe Lupo
- Dpt. of Chemistry, Sapienza University of Rome, Italy.
| | - Elena Miranda
- Dpt. of Biology and Biotechnologies 'Charles Darwin', Sapienza University of Rome, Italy; Pasteur Institute - Cenci Bolognetti Foundation, Sapienza University of Rome, Italy.
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Feng S, Jiang Y, Zhang S, Dong C, Jiang L, Peng W, Mu X, Sun X, Xu P. Genome wide identification of scavenger receptors class A in common carp (Cyprinus carpio) and their expression following Aeromonas hydrophila infection. FISH & SHELLFISH IMMUNOLOGY 2016; 54:60-67. [PMID: 27041666 DOI: 10.1016/j.fsi.2016.03.156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 03/10/2016] [Accepted: 03/24/2016] [Indexed: 06/05/2023]
Abstract
Scavenger receptors class A (SCARAs) is a subgroup of diverse families of pattern recognition receptors that bind a range of ligands, and play important roles in innate immune processes through pathogens detection, adhesion, endocytosis, and phagocytosis. However, most studies of SCARAs have focused on mammals, and much less is known of SCARAs in fish species. In this study, we identified 7 SCARAs across the common carp genome, which were classified into four subclasses according to comparative genomic analysis including sequence similarities analysis, gene structure and functional domain prediction. Further phylogenetic and syntenic analysis supported their annotation and orthologies. Through examining gene copy number of SCARA genes across several vertebrates, SCARA2, SCARA3 and SCARA4 were found have undergone gene duplication. The expression patterns of SCARAs in common carp were examined during early developmental stages, in healthy tissues, and after Aeromonas hydrophila infection. Most SCARA genes were ubiquitously expressed during common carp early developmental stages, and presented diverse patterns in various healthy tissues, with relatively high expression levels in spleen, liver, intestine, gill and brain, indicating their critical roles likely in maintaining homeostasis and host immune response activities. After A. hydrophila infection, most SCARA genes were up-regulated at 4 h post infection in mucosal tissue intestine, while generally up-regulated at 12 h post infection in spleen, suggesting a tissue-specific pattern of regulation. Taken together, all these results suggested that SCARA genes played important roles in host immune response to A. hydrophila infection in common carp, and provided important genomic resources for future studies on fish disease management.
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Affiliation(s)
- Shuaisheng Feng
- CAFS Key Laboratory of Aquatic Genomics and Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yanliang Jiang
- CAFS Key Laboratory of Aquatic Genomics and Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China.
| | - Songhao Zhang
- CAFS Key Laboratory of Aquatic Genomics and Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China
| | - Chuanju Dong
- CAFS Key Laboratory of Aquatic Genomics and Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Likun Jiang
- CAFS Key Laboratory of Aquatic Genomics and Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Wenzhu Peng
- CAFS Key Laboratory of Aquatic Genomics and Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Xidong Mu
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory of Tropical & Subtropical Fishery Resource Application & Cultivation, Ministry of Agriculture, Guangzhou, China
| | - Xiaowen Sun
- CAFS Key Laboratory of Aquatic Genomics and Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China
| | - Peng Xu
- CAFS Key Laboratory of Aquatic Genomics and Beijing Key Laboratory of Fishery Biotechnology, Centre for Applied Aquatic Genomics, Chinese Academy of Fishery Sciences, Beijing, China.
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24
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Lipchick BC, Fink EE, Nikiforov MA. Oxidative stress and proteasome inhibitors in multiple myeloma. Pharmacol Res 2016; 105:210-5. [PMID: 26827824 PMCID: PMC5044866 DOI: 10.1016/j.phrs.2016.01.029] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 01/20/2016] [Accepted: 01/22/2016] [Indexed: 11/23/2022]
Abstract
Multiple myeloma is a form of plasma cell neoplasm that accounts for approximately 10% of all hematological malignancies. Recently, several novel drugs have been discovered that almost doubled the overall survival of multiple myeloma patients. One of these drugs, the first-in-class proteasome inhibitor bortezomib (Velcade) has demonstrated remarkable response rates in multiple myeloma patients, and yet, currently this disease remains incurable. The major factor undermining the success of multiple myeloma treatment is a rapidly emerging resistance to the available therapy. Thus, the development of stand-alone or adjuvant anti-myeloma agents becomes of paramount importance. Overproduction of intracellular reactive oxygen species (ROS) often accompanies malignant transformation due to oncogene activation and/or enhanced metabolism in tumor cells. As a result, these cells possess higher levels of ROS and lower levels of antioxidant molecules compared to their normal counterparts. Unbalanced production of ROS leads to oxidative stress which, if left unchecked, could be toxic for the cell. In multiple myeloma cells where high rates of immunoglobulin synthesis is an additional factor contributing to overproduction of ROS, further induction of oxidative stress can be an effective strategy to cope with this disease. Here we will review the available data on the role of oxidative stress in the cytotoxicity of proteasome inhibitors and the use of ROS-inducing compounds as anti-myeloma agents.
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Affiliation(s)
- Brittany C Lipchick
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
| | - Emily E Fink
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
| | - Mikhail A Nikiforov
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
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25
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Karachanak-Yankova S, Dimova R, Nikolova D, Nesheva D, Koprinarova M, Maslyankov S, Tafradjiska R, Gateva P, Velizarova M, Hammoudeh Z, Stoynev N, Toncheva D, Tankova T, Dimova I. Epigenetic alterations in patients with type 2 diabetes mellitus. Balkan J Med Genet 2015; 18:15-24. [PMID: 27785392 PMCID: PMC5026264 DOI: 10.1515/bjmg-2015-0081] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Epigenetic changes, in particular DNA methylation processes, play a role in the pathogenesis and progression of type 2 diabetes mellitus (T2DM) linking genetic and environmental factors. To clarify this role, we have analyzed in patients with different duration of T2DM: (i) expression levels of methyl-CpG-binding domain protein 2 (MBD2) as marker of DNA methylation, and ii) methylation changes in 22 genes connected to cellular stress and toxicity. We have analyzed MBD2 mRNA expression levels in16 patients and 12 controls and the methylation status of stress and toxicity genes in four DNA pools: (i) controls; (ii) newly-diagnosed T2DM patients; (iii) patients with T2DM duration of <5 years and (iv) of >5 years. The MBD2 expression levels were 10.4-times increased on average in T2DM patients compared to controls. Consistent increase in DNA methylation fraction with the increase in T2DM duration was observed in Prdx2 and SCARA3 genes, connected to oxidative stress protection and in BRCA1 and Tp53 tumor-suppressor genes. In conclusion, increased MBD2 expression in patients indicated general dysregulation of DNA methylation in T2DM. The elevated methylation of Prdx2 and SCARA3 genes suggests disturbance in oxidative stress protection in T2DM. The increased methylation of BRCA1 and Tp53 genes unraveled an epigenetic cause for T2DM related increase in cancer risk.
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Affiliation(s)
- S Karachanak-Yankova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - R Dimova
- University Specialized Hospital for Active Treatment of Endocrinology ‘Acad. Ivan Penchev,’ Sofia, Bulgaria
| | - D Nikolova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - D Nesheva
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - M Koprinarova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - S Maslyankov
- Department of Surgery, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - R Tafradjiska
- Department of Pathophysiology, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - P Gateva
- Department of Pharmacology and Toxicology, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - M Velizarova
- Clinical Laboratory, University Hospital ‘Aleksandrovska,’Sofia, Bulgaria
| | - Z Hammoudeh
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - N Stoynev
- University Specialized Hospital for Active Treatment of Endocrinology ‘Acad. Ivan Penchev,’ Sofia, Bulgaria
| | - D Toncheva
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
| | - T Tankova
- University Specialized Hospital for Active Treatment of Endocrinology ‘Acad. Ivan Penchev,’ Sofia, Bulgaria
| | - I Dimova
- Department of Medical Genetics, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
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26
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Glucose availability determines silver nanoparticles toxicity in HepG2. J Nanobiotechnology 2015; 13:72. [PMID: 26493216 PMCID: PMC4618757 DOI: 10.1186/s12951-015-0132-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 10/03/2015] [Indexed: 12/19/2022] Open
Abstract
Background The increasing body of evidence suggest that nanomaterials toxicity is associated with generation of oxidative stress. In this paper we investigated the role of respiration in silver nanoparticles (AgNPs) generated oxidative stress and toxicity. Since cancer cells rely on glucose as the main source of energy supply, glucose availability might be an important determinant of NPs toxicity. Methods AgNPs of 20 nm nominal diameter were used as a model NPs. HepG2 cells were cultured in the media with high (25 mM) or low (5.5 mM) glucose content and treated with 20 nm AgNPs. AgNPs-induced toxicity was tested by neutral red assay. Generation of H2O2 in mitochondria was evaluated by use of mitochondria specific protein indicator HyPer-Mito. Expression of a 77 oxidative stress related genes was assessed by qPCR. The activity of antioxidant enzymes was estimated colorimetrically by dedicated methods in cell homogenates. Results AgNPs-induced dose-dependent generation of H2O2 and toxicity was observed. Toxicity of AgNPs towards cells maintained in the low glucose medium was significantly lower than the toxicity towards cells growing in the high glucose concentration. Scarceness of glucose supply resulted in upregulation of the endogenous antioxidant defence mechanisms that in turn alleviated AgNPs dependent ROS generation and toxicity. Conclusion Glucose availability can modify toxicity of AgNPs via elevation of antioxidant defence triggered by oxidative stress resulted from enhanced oxidative phosphorylation in mitochondria and associated generation of ROS. Presented results strengthen the idea of strong linkage between NPs toxicity and intracellular respiration and possibly other mitochondria dependent processes. Electronic supplementary material The online version of this article (doi:10.1186/s12951-015-0132-2) contains supplementary material, which is available to authorized users.
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27
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Duru AD, Sutlu T, Wallblom A, Uttervall K, Lund J, Stellan B, Gahrton G, Nahi H, Alici E. Deletion of Chromosomal Region 8p21 Confers Resistance to Bortezomib and Is Associated with Upregulated Decoy TRAIL Receptor Expression in Patients with Multiple Myeloma. PLoS One 2015; 10:e0138248. [PMID: 26378933 PMCID: PMC4574561 DOI: 10.1371/journal.pone.0138248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/27/2015] [Indexed: 01/06/2023] Open
Abstract
Loss of the chromosomal region 8p21 negatively effects survival in patients with multiple myeloma (MM) that undergo autologous stem cell transplantation (ASCT). In this study, we aimed to identify the immunological and molecular consequences of del(8)(p21) with regards to treatment response and bortezomib resistance. In patients receiving bortezomib as a single first line agent without any high-dose therapy, we have observed that patients with del(8)(p21) responded poorly to bortezomib with 50% showing no response while patients without the deletion had a response rate of 90%. In vitro analysis revealed a higher resistance to bortezomib possibly due to an altered gene expression profile caused by del(8)(p21) including genes such as TRAIL-R4, CCDC25, RHOBTB2, PTK2B, SCARA3, MYC, BCL2 and TP53. Furthermore, while bortezomib sensitized MM cells without del(8)(p21) to TRAIL/APO2L mediated apoptosis, in cells with del(8)(p21) bortezomib failed to upregulate the pro-apoptotic death receptors TRAIL-R1 and TRAIL-R2 which are located on the 8p21 region. Also expressing higher levels of the decoy death receptor TRAIL-R4, these cells were largely resistant to TRAIL/APO2L mediated apoptosis. Corroborating the clinical outcome of the patients, our data provides a potential explanation regarding the poor response of MM patients with del(8)(p21) to bortezomib treatment. Furthermore, our clinical analysis suggests that including immunomodulatory agents such as Lenalidomide in the treatment regimen may help to overcome this negative effect, providing an alternative consideration in treatment planning of MM patients with del(8)(p21).
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Affiliation(s)
- Adil Doganay Duru
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
- Center for Diseases of Aging, Vaccine and Gene Therapy Institute of Florida, Port St. Lucie, Florida, United States of America
| | - Tolga Sutlu
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
- Nanotechnology Research and Application Center, Sabanci University, Istanbul, Turkey
| | - Ann Wallblom
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Katarina Uttervall
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
- Haematology Centre, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Johan Lund
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
- Haematology Centre, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Birgitta Stellan
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Gösta Gahrton
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
- Haematology Centre, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Hareth Nahi
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
- Haematology Centre, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Evren Alici
- Center for Hematology and Regenerative Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
- Center for Diseases of Aging, Vaccine and Gene Therapy Institute of Florida, Port St. Lucie, Florida, United States of America
- Haematology Centre, Karolinska University Hospital, Huddinge, Stockholm, Sweden
- * E-mail:
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28
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Abstract
Scavenger receptors constitute a large family of evolutionally conserved protein molecules that are structurally and functionally diverse. Although scavenger receptors were originally identified based on their capacity to scavenge modified lipoproteins, these molecules have been shown to recognize and bind to a broad spectrum of ligands, including modified and unmodified host-derived molecules or microbial components. As a major subset of innate pattern recognition receptors, scavenger receptors are mainly expressed on myeloid cells and function in a wide range of biological processes, such as endocytosis, adhesion, lipid transport, antigen presentation, and pathogen clearance. In addition to playing a crucial role in maintenance of host homeostasis, scavenger receptors have been implicated in the pathogenesis of a number of diseases, e.g., atherosclerosis, neurodegeneration, or metabolic disorders. Emerging evidence has begun to reveal these receptor molecules as important regulators of tumor behavior and host immune responses to cancer. This review summarizes our current understanding on the newly identified, distinct functions of scavenger receptors in cancer biology and immunology. The potential of scavenger receptors as diagnostic biomarkers and novel targets for therapeutic interventions to treat malignancies is also highlighted.
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Affiliation(s)
- Xiaofei Yu
- Department of Human and Molecular Genetics, Richmond, Virginia, USA; VCU Institute of Molecular Medicine, Richmond, Virginia, USA; VCU Massey Cancer Center, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - Chunqing Guo
- Department of Human and Molecular Genetics, Richmond, Virginia, USA; VCU Institute of Molecular Medicine, Richmond, Virginia, USA; VCU Massey Cancer Center, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - Paul B Fisher
- Department of Human and Molecular Genetics, Richmond, Virginia, USA; VCU Institute of Molecular Medicine, Richmond, Virginia, USA; VCU Massey Cancer Center, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - John R Subjeck
- Department of Cellular Stress Biology, Roswell Park Cancer Institute, Buffalo, New York, USA.
| | - Xiang-Yang Wang
- Department of Human and Molecular Genetics, Richmond, Virginia, USA; VCU Institute of Molecular Medicine, Richmond, Virginia, USA; VCU Massey Cancer Center, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA.
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He J, Liu H, Wu C. Identification of SCARA3, SCARA5 and MARCO of class A scavenger receptor-like family in Pseudosciaena crocea. FISH & SHELLFISH IMMUNOLOGY 2014; 41:238-249. [PMID: 25218683 DOI: 10.1016/j.fsi.2014.07.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 07/14/2014] [Accepted: 07/25/2014] [Indexed: 06/03/2023]
Abstract
The class A scavenger receptors are important pattern recognition receptors of the innate immune system in living organisms. According to the whole-genome data of large yellow croaker (Pseudosciaena crocea), three kinds of scavenger receptors, SCARA3, SCARA5 and MARCO were cloned from the spleen, designated severally as TycSA3, TycSA5 and TycMAC. The complete cDNAs open reading frames (ORF) of TycSA3, TycSA5 and TycMAC were 1938 bp, 1677 bp and 1218 bp (GenBank accession no. KJ467772, KJ467773 and KJ467771), encoding 645, 558 and 405 amino acid (aa) residues respectively. The BLASTp analysis strongly suggested that the sequences shared high similarity with known SCARA3, SCARA5 and MARCO. The phylogenetic relationship analysis illustrated that different subtype of SRs formed their own separate branches, TycSA3 and TycSA5 were placed in SCARA3 and SCARA5 branch of Osteichthyes fish respectively with strong bootstrap support. Curiously, the TycMAC was clustered with Alligator sinensis. ClustalW analysis with amino acid sequences revealed that the proportion of identity with other species was 59-71% for TycSA3 and 55-72% for TycSA5, but the scale of TycMAC was considerable lower than those of other two genes (only approximately 38%). The SR family motifs, such as transmembrane helix region, colied coli region and collagens region in the TycSA3, TycSA5 and TycMAC were conserved. There was an optional cysteine-rich (SRCR) domain (from 457 to 557 residues) containing 6 conserved cysteines (C-482, C-495, C-526, C-536, C-546 and C-556) in TycSA5. Likewise, the SRCR domains of TycMAC (from 310 to 405 residues) also contained C-333, C-346, C-374, C-384, C-394 and C-404 cysteines residues. Particularly, there were the major TRAF2-binding consensus motif and two main motifs on internalization of receptor in TycSA3 and TycSA5. The gene structures of different species were analyzed with GeneMaper v2.5, and the number of introns and exons of TycSA3, TycSA5 and TycMAC in DNA sequences were different, for example some corresponding exon regions were divided into several smaller exon portions. Furthermore, quantitative real-time PCR (qRT-PCR) analysis indicated the highest mRNA expression of TycSA3, TycSA5 and TycMAC all appeared in spleen among eight detected tissues, and the expression of them were up-regulated in spleen after Vibrio alginolyticus injection. All these results demonstrated that class A SRs played a significant role in the defense against pathogenic bacteria infection in innate immune of sciaenidae fish.
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Affiliation(s)
- Jianyu He
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Huihui Liu
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Changwen Wu
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China.
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