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Park Y, Zhang Q, Fernandes JMO, Wiegertjes GF, Kiron V. Macrophage Heterogeneity in the Intestinal Cells of Salmon: Hints From Transcriptomic and Imaging Data. Front Immunol 2021; 12:798156. [PMID: 35003123 PMCID: PMC8733388 DOI: 10.3389/fimmu.2021.798156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/24/2021] [Indexed: 11/13/2022] Open
Abstract
The intestine has many types of cells that are present mostly in the epithelium and lamina propria. The importance of the intestinal cells for the mammalian mucosal immune system is well-established. However, there is no in-depth information about many of the intestinal cells in teleosts. In our previous study, we reported that adherent intestinal cells (AIC) predominantly express macrophage-related genes. To gather further evidence that AIC include macrophage-like cells, we compared their phagocytic activity and morphology with those of adherent head kidney cells (AKC), previously characterized as macrophage-like cells. We also compared equally abundant as well as differentially expressed mRNAs and miRNAs between AIC and AKC. AIC had lower phagocytic activity and were larger and more circular than macrophage-like AKC. RNA-Seq data revealed that there were 18309 mRNAs, with 59 miRNAs that were equally abundant between AIC and AKC. Integrative analysis of the mRNA and miRNA transcriptomes revealed macrophage heterogeneity in both AIC and AKC. In addition, analysis of AIC and AKC transcriptomes revealed functional characteristics of mucosal and systemic macrophages. Five pairs with significant negative correlations between miRNA and mRNAs were linked to macrophages and epithelial cells and their interaction could be pointing to macrophage activation and differentiation. The potential macrophage markers suggested in this study should be investigated under different immune conditions to understand the exact macrophage phenotypes.
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Affiliation(s)
- Youngjin Park
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | - Qirui Zhang
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | | | - Geert F. Wiegertjes
- Aquaculture and Fisheries Group, Wageningen University & Research, Wageningen, Netherlands
| | - Viswanath Kiron
- Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
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Bai Y, Sun Y, Peng J, Liao H, Gao H, Guo Y, Guo L. Overexpression of secretagogin inhibits cell apoptosis and induces chemoresistance in small cell lung cancer under the regulation of miR-494. Oncotarget 2015; 5:7760-75. [PMID: 25226615 PMCID: PMC4202159 DOI: 10.18632/oncotarget.2305] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Secretagogin (SCGN) has recently been identified to play a crucial role in cell apoptosis, receptor signaling and differentiation. However, its clinical significance and functional roles in SCLC chemoresistance remain unknown. Here we examined the expression of SCGN in clinical samples from SCLC patients and evaluated its relation with clinical prognosis. Then up and down-regulation of SCGN were carried out in SCLC cell lines to assess its influence on chemoresistance. Furthermore, luciferase reporter assay was used to evaluate whether SCGN is a novel direct target of miR-494. Our results revealed that elevated expression of SCGN was correlated with the poorer prognosis of SCLC patients and the more significant correlation with chemosensitivity. We also found that knockdown of SCGN expression in H69AR and H446AR cells increased chemosensitivity via increasing cell apoptosis and cell cycle arrest of G0/G1 phase, while over-expression of SCGN reduced chemosensitivity in sensitive H69 and H446 cells. SCGN as a novel target of miR-494 by luciferase reporter assay, up-regulation of miR-494 can sensitize H69AR cells to chemotherapeutic drugs. These results suggest SCGN is involved in the chemoresistance of SCLC under the regulation of miR-494 and may be a potential biomarker for predicting therapeutic response in treatment SCLC.
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Affiliation(s)
- Yifeng Bai
- Department of Pathology, Zhujiang Hospital, Southern Medical University, Guangzhou, China. Department of Oncology, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, China. Contributed equally to this work
| | - Yanqin Sun
- Department of Pathology, Zhujiang Hospital, Southern Medical University, Guangzhou, China. Department of Pathology, School of Basic Medicine Science, Guangdong Medical College, Dongguan, China. Contributed equally to this work
| | - Juan Peng
- Department of Pathology, Zhujiang Hospital, Southern Medical University, Guangzhou, China. Department of Pathology, the Third Affiliated Hospital Of Guangzhou Medical University, Guangzhou, China
| | - Hongzhan Liao
- Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Hongyi Gao
- Department of Pathology, Zhujiang Hospital, Southern Medical University, Guangzhou, China. Department of Pathology, Guangdong Women and Children Hospital, Guangzhou, China
| | - Ying Guo
- Department of Organ Transplantation, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Linlang Guo
- Department of Pathology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Sharma AK, Khandelwal R, Sharma Y, Rajanikanth V. Secretagogin, a hexa EF-hand calcium-binding protein: high level bacterial overexpression, one-step purification and properties. Protein Expr Purif 2015; 109:113-9. [PMID: 25703053 DOI: 10.1016/j.pep.2015.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 12/22/2014] [Accepted: 02/11/2015] [Indexed: 12/20/2022]
Abstract
Secretagogin (SCGN), a hexa EF-hand calcium-binding protein, is highly expressed in the endocrine cells (especially in pancreatic islets) and in restricted neuronal sub-populations, albeit at comparatively low level. Since SCGN is predicted to be a potential neuroendocrine marker in carcinoid tumors of lung and gastrointestinal tract, it is of paramount importance to understand the features of this protein in different environment for assigning its crucial functions in different tissues and under pathophysiological conditions. To score out the limitation of protein for in vitro studies, we report a one-step, high purity and high level bacterial purification of secretagogin by refolding from the inclusion bodies yielding about 40mg protein per litre of bacterial culture. We also report previously undocumented Ca(2+)/Mg(2+) binding and hydrodynamic properties of secretagogin.
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Affiliation(s)
- Anand Kumar Sharma
- CSIR-Centre for Cellular and Molecular Biology (CCMB), Uppal Road, Hyderabad 500 007, India.
| | - Radhika Khandelwal
- CSIR-Centre for Cellular and Molecular Biology (CCMB), Uppal Road, Hyderabad 500 007, India
| | - Yogendra Sharma
- CSIR-Centre for Cellular and Molecular Biology (CCMB), Uppal Road, Hyderabad 500 007, India
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Ilhan-Mutlu A, Wagner L, Widhalm G, Wöhrer A, Bartsch S, Czech T, Heinzl H, Leutmezer F, Prayer D, Marosi C, Base W, Preusser M. Exploratory investigation of eight circulating plasma markers in brain tumor patients. Neurosurg Rev 2012; 36:45-55; discussion 55-6. [PMID: 22763625 DOI: 10.1007/s10143-012-0401-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Revised: 11/25/2011] [Accepted: 05/20/2012] [Indexed: 11/28/2022]
Abstract
Several blood biomarkers have been established for the early diagnosis, screening and follow-up of non central nervous system cancers. However, there is lack of knowledge on biochemical blood alterations in brain tumor patients. In this study, we prospectively collected blood plasma samples of 105 adult brain tumor patients with diffuse low-grade glioma (World Health Organization (WHO) II, n = 7), anaplastic glioma (WHO III, n = 10), glioblastoma multiforme (WHO IV, glioblastoma multiforme (GBM)) (n = 34), meningioma (WHO I, n = 8), atypical meningioma (WHO II, n = 5), and intracerebral metastasis (ICM; n = 41). In each case, we measured plasma concentrations of neuropeptide Y, brain-derived neurotrophic factor, glial cell line-derived neurotrophic factor, placental growth factor (PlGF), S100B, secretagogin, interleukin 8, and glial fibrillary acidic protein (GFAP) using enzyme-linked immunosorbent assay. Plasma marker concentrations were correlated to patient parameters including neuropathological diagnosis and neuroradiological features. Most of the markers were detectable in all diagnostic categories in variable concentrations. GFAP plasma detectability was strongly associated with a diagnosis of GBM (p < 0.001). Plasma GFAP and plasma placental growth factor showed promising moderate potential in the differential diagnosis of unifocal GBM versus unifocal supratentorial ICM (area under the curve = 0.73, p < 0.05). To summarize, our data show that none of the investigated markers is suitable to substitute histological diagnosis. However, measurement of circulating GFAP and PlGF may support neuroradiological differential diagnosis of GBM versus ICM.
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Affiliation(s)
- Aysegul Ilhan-Mutlu
- Department of Medicine III, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
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Alpár A, Attems J, Mulder J, Hökfelt T, Harkany T. The renaissance of Ca2+-binding proteins in the nervous system: secretagogin takes center stage. Cell Signal 2012; 24:378-387. [PMID: 21982882 PMCID: PMC3237847 DOI: 10.1016/j.cellsig.2011.09.028] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 09/24/2011] [Indexed: 02/03/2023]
Abstract
Effective control of the Ca(2+) homeostasis in any living cell is paramount to coordinate some of the most essential physiological processes, including cell division, morphological differentiation, and intercellular communication. Therefore, effective homeostatic mechanisms have evolved to maintain the intracellular Ca(2+) concentration at physiologically adequate levels, as well as to regulate the spatial and temporal dynamics of Ca(2+)signaling at subcellular resolution. Members of the superfamily of EF-hand Ca(2+)-binding proteins are effective to either attenuate intracellular Ca(2+) transients as stochiometric buffers or function as Ca(2+) sensors whose conformational change upon Ca(2+) binding triggers protein-protein interactions, leading to cell state-specific intracellular signaling events. In the central nervous system, some EF-hand Ca(2+)-binding proteins are restricted to specific subtypes of neurons or glia, with their expression under developmental and/or metabolic control. Therefore, Ca(2+)-binding proteins are widely used as molecular markers of cell identity whilst also predicting excitability and neurotransmitter release profiles in response to electrical stimuli. Secretagogin is a novel member of the group of EF-hand Ca(2+)-binding proteins whose expression precedes that of many other Ca(2+)-binding proteins in postmitotic, migratory neurons in the embryonic nervous system. Secretagogin expression persists during neurogenesis in the adult brain, yet becomes confined to regionalized subsets of differentiated neurons in the adult central and peripheral nervous and neuroendocrine systems. Secretagogin may be implicated in the control of neuronal turnover and differentiation, particularly since it is re-expressed in neoplastic brain and endocrine tumors and modulates cell proliferation in vitro. Alternatively, and since secretagogin can bind to SNARE proteins, it might function as a Ca(2+) sensor/coincidence detector modulating vesicular exocytosis of neurotransmitters, neuropeptides or hormones. Thus, secretagogin emerges as a functionally multifaceted Ca(2+)-binding protein whose molecular characterization can unravel a new and fundamental dimension of Ca(2+)signaling under physiological and disease conditions in the nervous system and beyond.
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Affiliation(s)
- Alán Alpár
- European Neuroscience Institute at Aberdeen, University of Aberdeen, Aberdeen AB25 2ZD, United Kingdom; Division of Molecular Neurobiology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Johannes Attems
- Institute for Ageing and Health, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne NE4 5PL, United Kingdom
| | - Jan Mulder
- Science for Life Laboratory, Department of Neuroscience, Karolinska Institutet, Tomtebodavägen 23A, S-17165 Solna, Sweden
| | - Tomas Hökfelt
- Department of Neuroscience, Retzius väg 8, Karolinska Institutet, S-17177 Stockholm, Sweden
| | - Tibor Harkany
- European Neuroscience Institute at Aberdeen, University of Aberdeen, Aberdeen AB25 2ZD, United Kingdom; Division of Molecular Neurobiology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-17177 Stockholm, Sweden.
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Ilhan A, Neziri D, Maj M, Mazal PR, Susani M, Base W, Gartner W, Wagner L. Expression of secretagogin in clear-cell renal cell carcinomas is associated with a high metastasis rate. Hum Pathol 2011; 42:641-8. [DOI: 10.1016/j.humpath.2010.10.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 09/30/2010] [Accepted: 10/01/2010] [Indexed: 11/29/2022]
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Gartner W, Ilhan A, Neziri D, Base W, Weissel M, Wöhrer A, Heinzl H, Waldhör T, Wagner L, Preusser M. Elevated blood markers 1 year before manifestation of malignant glioma. Neuro Oncol 2010; 12:1004-8. [PMID: 20378688 DOI: 10.1093/neuonc/noq034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We detected distinct plasma concentration profiles of S100B, neuropeptide Y, and secretagogin in 3 of 191 patients enrolled in a previous study investigating brain-tissue-related markers in the blood of patients with atrial fibrillation. Intriguingly, 2 of these 3 patients, both of whom were without neurological symptoms at the time of blood sampling, were diagnosed with malignant glioma (MG) approximately 1 year later. To our knowledge, this is the first report indicating that distinct blood biomarker profiles may be detected long before clinical manifestation of MG.
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Affiliation(s)
- Wolfgang Gartner
- Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
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