1
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Liu D, Wang M, Murthy V, McNamara DM, Nguyen TTL, Philips TJ, Vyas H, Gao H, Sahni J, Starling RC, Cooper LT, Skime MK, Batzler A, Jenkins GD, Barlera S, Pileggi S, Mestroni L, Merlo M, Sinagra G, Pinet F, Krejčí J, Chaloupka A, Miller JD, de Groote P, Tschumperlin DJ, Weinshilboum RM, Pereira NL. Myocardial Recovery in Recent Onset Dilated Cardiomyopathy: Role of CDCP1 and Cardiac Fibrosis. Circ Res 2023; 133:810-825. [PMID: 37800334 PMCID: PMC10746262 DOI: 10.1161/circresaha.123.323200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 09/22/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND Dilated cardiomyopathy (DCM) is a major cause of heart failure and carries a high mortality rate. Myocardial recovery in DCM-related heart failure patients is highly variable, with some patients having little or no response to standard drug therapy. A genome-wide association study may agnostically identify biomarkers and provide novel insight into the biology of myocardial recovery in DCM. METHODS A genome-wide association study for change in left ventricular ejection fraction was performed in 686 White subjects with recent-onset DCM who received standard pharmacotherapy. Genome-wide association study signals were subsequently functionally validated and studied in relevant cellular models to understand molecular mechanisms that may have contributed to the change in left ventricular ejection fraction. RESULTS The genome-wide association study identified a highly suggestive locus that mapped to the 5'-flanking region of the CDCP1 (CUB [complement C1r/C1s, Uegf, and Bmp1] domain containing protein 1) gene (rs6773435; P=7.12×10-7). The variant allele was associated with improved cardiac function and decreased CDCP1 transcription. CDCP1 expression was significantly upregulated in human cardiac fibroblasts (HCFs) in response to the PDGF (platelet-derived growth factor) signaling, and knockdown of CDCP1 significantly repressed HCF proliferation and decreased AKT (protein kinase B) phosphorylation. Transcriptomic profiling after CDCP1 knockdown in HCFs supported the conclusion that CDCP1 regulates HCF proliferation and mitosis. In addition, CDCP1 knockdown in HCFs resulted in significantly decreased expression of soluble ST2 (suppression of tumorigenicity-2), a prognostic biomarker for heart failure and inductor of cardiac fibrosis. CONCLUSIONS CDCP1 may play an important role in myocardial recovery in recent-onset DCM and mediates its effect primarily by attenuating cardiac fibrosis.
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Affiliation(s)
- Duan Liu
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Min Wang
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | - Vishakantha Murthy
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
- Department of Medicine. Mayo Clinic, Rochester, MN, USA
| | | | | | - Thanh Thanh L. Nguyen
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Trudy J. Philips
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Hridyanshu Vyas
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | - Huanyao Gao
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Jyotan Sahni
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Leslie T. Cooper
- Department of Cardiovascular Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Michelle K. Skime
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA
| | - Anthony Batzler
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | | | - Simona Barlera
- Department of Cardiovascular Research, Istituto di Ricovero e Cura a Carattere Scientifico–Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Silvana Pileggi
- Department of Cardiovascular Research, Istituto di Ricovero e Cura a Carattere Scientifico–Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Luisa Mestroni
- Cardiovascular Institute, University of Colorado School of Medicine, Aurora, CO, USA
| | - Marco Merlo
- Cardiothoracovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), University of Trieste, Italy
| | - Gianfranco Sinagra
- Cardiothoracovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), University of Trieste, Italy
| | - Florence Pinet
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167, Lille, France
| | - Jan Krejčí
- St. Anne’s University Hospital and Masaryk University, Brno, Czech Republic
| | - Anna Chaloupka
- St. Anne’s University Hospital and Masaryk University, Brno, Czech Republic
| | - Jordan D. Miller
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, MN, USA
| | - Pascal de Groote
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1167, Lille, France
- CHU Lille, Service de Cardiologie, Lille, France
| | | | - Richard M. Weinshilboum
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
| | - Naveen L. Pereira
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, USA
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
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2
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Chen N, Wu H, Deng Z, Liao Z, Feng S, Luo Z, Chu Y, Qiu G, Li X, Jin Y, Rong S, Wang F, Gan L, Chen R, Zhao L. [An optimized protocol of meniscus cell extraction for single-cell RNA sequencing]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:1310-1318. [PMID: 34658344 DOI: 10.12122/j.issn.1673-4254.2021.09.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To optimize the protocol of meniscus cell extraction to enhance the efficiency of cell suspension preparation and maintain a high cell viability for single-cell RNA sequencing. METHODS We compared the efficiency of the routine cell extraction methods (short-time digestion and long-time digestion) and the optimized protocol for obtaining meniscus cell suspensions by evaluating the cell number obtained and the cell viability. Single-cell RNA sequencing datasets were analyzed to evaluate the stability of the cell suspension prepared using the optimized protocol. The reliability of the optimized protocol was assessed by comparing the single-cell RNA sequencing dataset obtained by the optimized protocol with published single-cell RNA sequencing datasets of the meniscus. RESULTS The optimized protocol harvested a greater number of cells (over 1×105) than the routine protocols. The cell suspension prepared with the optimized protocol showed a cell viability higher than 80%, the highest among the 3 methods. Analysis of single-cell RNA sequencing datasets showed that the ratio of the mitochondrial genes was below 20% in over 80% of the cells. CD34+ cells, MCAM+ cells and COL1A1+ cells were identified in the datasets. Comparison with the publish datasets showed that the optimized protocol was capable of harvesting COL3A1+, COL1A1+, MYLK+, BMP2+, CD93+ and CDK1+ cells. CONCLUSION Single-cell suspension prepared from the meniscus can be stably obtained using the optimized protocol for single-cell RNA sequencing using the 10× Genomics platform.
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Affiliation(s)
- N Chen
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - H Wu
- Zhujiang Hospital, Southern Medical University, Guangzhou 510080, China
| | - Z Deng
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Z Liao
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S Feng
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Z Luo
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Y Chu
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G Qiu
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X Li
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Y Jin
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S Rong
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - F Wang
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - L Gan
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - R Chen
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - L Zhao
- Department of Orthopedics, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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Lun Y, Borjini N, Miura NN, Ohno N, Singer NG, Lin F. CDCP1 on Dendritic Cells Contributes to the Development of a Model of Kawasaki Disease. THE JOURNAL OF IMMUNOLOGY 2021; 206:2819-2827. [PMID: 34099547 DOI: 10.4049/jimmunol.2001406] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 04/09/2021] [Indexed: 11/19/2022]
Abstract
The etiology and pathology of Kawasaki disease (KD) remain elusive. Cub domain-containing protein 1 (CDCP1), a cell-surface protein that confers poor prognosis of patients with certain solid tumors, was recently identified as one of the most significantly upregulated genes in SARS-CoV-2-infected children who developed systemic vasculitis, a hallmark of KD. However, a potential role of CDCP1 in KD has not previously been explored. In this study, we found that CDCP1 knockout (KO) mice exhibited attenuated coronary and aortic vasculitis and decreased serum Candida albicans water-soluble fraction (CAWS)-specific IgM/IgG2a and IL-6 concentrations compared with wild-type mice in an established model of KD induced by CAWS administration. CDCP1 expression was not detectable in cardiomyocytes, cardio fibroblasts, or coronary endothelium, but constitutive expression of CDCP1 was observed on dendritic cells (DCs) and was upregulated by CAWS stimulation. CAWS-induced IL-6 production was significantly reduced in CDCP1 KO DCs, in association with impaired Syk-MAPK signaling pathway activation. These novel findings suggest that CDCP1 might regulate KD development by modulating IL-6 production from DCs via the Syk-MAPK signaling pathway.
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Affiliation(s)
- Yu Lun
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA.,Department of Vascular Surgery, The First Hospital, China Medical University, Shenyang, China
| | - Nozha Borjini
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Noriko N Miura
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Hachioji, Tokyo, Japan; and
| | - Naohito Ohno
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Science, Hachioji, Tokyo, Japan; and
| | - Nora G Singer
- Division of Rheumatology, MetroHealth Medical Center, Cleveland, OH
| | - Feng Lin
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA;
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Expression of CD146 and Regenerative Cytokines by Human Placenta-Derived Mesenchymal Stromal Cells upon Expansion in Different GMP-Compliant Media. Stem Cells Int 2021; 2021:6662201. [PMID: 33868409 PMCID: PMC8035028 DOI: 10.1155/2021/6662201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 03/08/2021] [Accepted: 03/17/2021] [Indexed: 11/18/2022] Open
Abstract
Mesenchymal stromal cells (MSCs) have been successfully employed in clinical applications. In most studies, autologous MSCs from the bone marrow (bmMSCs) were used, and others employed autologous adipose tissue-derived stromal cells (ADSCs). Recently, clinical feasibility studies provided evidence that MSCs from human term placenta (pMSCs) can be used for homologous therapy facilitating access to regenerative cells in emergency situations, when autologous cells are not available or not suitable. We therefore investigated the expression of MSC stemness marker CD146 and the expression of neuro- and myoregenerative cytokines by human pMSCs after expansion in three different media compliant with good manufacturing protocols (GMP) in comparison to pMSCs expanded in a commercial MSC expansion media. To replace xenobiotic serum in the GMP-compliant media employed in this study, either human serum, human serum plus platelet lysate (PLL), or human plasma plus PLL was used. We report that enrichment of media with PLL accelerates pMSC proliferation but reduces the expression of the stemness marker CD146 significantly, while PLL deprivation enhanced the CD146 expression. In contrast, the reduced expression of CD146 by PLL deprivation was not observed on bmMSCs. The expression of the cytokines investigated was not modulated significantly by PLL. We conclude that accelerated expansion of pMSCs in GMP-compliant media enriched by PLL reduces the expression of stemness marker CD146, but does not influence the expression of neuro- and myoregenerative cytokines.
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Adamo A, Delfino P, Gatti A, Bonato A, Takam Kamga P, Bazzoni R, Ugel S, Mercuri A, Caligola S, Krampera M. HS-5 and HS-27A Stromal Cell Lines to Study Bone Marrow Mesenchymal Stromal Cell-Mediated Support to Cancer Development. Front Cell Dev Biol 2020; 8:584232. [PMID: 33251214 PMCID: PMC7674674 DOI: 10.3389/fcell.2020.584232] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/08/2020] [Indexed: 12/18/2022] Open
Abstract
In this study, we compared the overall gene and pathway expression profiles of HS-5 and HS-27A stromal cell lines with those of primary bone marrow MSCs to verify if they can be considered a reliable alternative tool for evaluating the contribution of MSCs in tumor development and immunomodulation. Indeed, due to their easier manipulation in vitro as compared to primary MSC cultures, several published studies took advantage of stromal cell lines to assess the biological mechanisms mediated by stromal cells in influencing tumor biology and immune responses. However, the process carried out to obtain immortalized cell lines could profoundly alter gene expression profile, and consequently their biological characteristics, leading to debatable results. Here, we evaluated the still undisclosed similarities and differences between HS-5, HS-27A cell lines and primary bone marrow MSCs in the context of tumor development and immunomodulation. Furthermore, we assessed by standardized immunological assays the capability of the cell lines to reproduce the general mechanisms of MSC immunoregulation. We found that only HS-5 cell line could be suitable to reproduce not only the MSC capacity to influence tumor biology, but also to evaluate the molecular mechanisms underlying tumor immune escape mediated by stroma cells. However, HS-5 pre-treatment with inflammatory cytokines, that normally enhances the immunosuppressive activity of primary MSCs, did not reproduce the same MSCs behavior, highlighting the necessity to accurately set up in vitro assays when HS-5 cell line is used instead of its primary counterpart.
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Affiliation(s)
- Annalisa Adamo
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, Verona, Italy.,Department of Medicine, Section of Immunology, University of Verona, Verona, Italy
| | - Pietro Delfino
- Department of Diagnostic and Public Health, University of Verona, Verona, Italy
| | - Alessandro Gatti
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
| | - Alice Bonato
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
| | - Paul Takam Kamga
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, Verona, Italy.,EA4340-BCOH, Biomarker in Cancerology and Onco-Haematology, UVSQ, Université Paris Saclay, Boulogne-Billancourt, France
| | - Riccardo Bazzoni
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
| | - Stefano Ugel
- Department of Medicine, Section of Immunology, University of Verona, Verona, Italy
| | - Angela Mercuri
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
| | - Simone Caligola
- Department of Medicine, Section of Immunology, University of Verona, Verona, Italy
| | - Mauro Krampera
- Stem Cell Research Laboratory, Section of Hematology, Department of Medicine, University of Verona, Verona, Italy
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The crucial choice of reference genes: identification of miR-191-5p for normalization of miRNAs expression in bone marrow mesenchymal stromal cell and HS27a/HS5 cell lines. Sci Rep 2020; 10:17728. [PMID: 33082452 PMCID: PMC7576785 DOI: 10.1038/s41598-020-74685-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 09/25/2020] [Indexed: 02/07/2023] Open
Abstract
Bone marrow mesenchymal stromal cells (BM-MSCs) have a critical role in tissue regeneration and in the hematopoietic niche due to their differentiation and self-renewal capacities. These mechanisms are finely tuned partly by small non-coding microRNA implicated in post-transcriptional regulation. The easiest way to quantify them is RT-qPCR followed by normalization on validated reference genes (RGs). This study identified appropriate RG for normalization of miRNA expression in BM-MSCs and HS27a and HS5 cell lines in various conditions including normoxia, hypoxia, co-culture, as model for the hematopoietic niche and after induced differentiation as model for regenerative medicine. Six candidates, namely miR-16-5p, miR-34b-3p, miR-103a-3p, miR-191-5p, let-7a-5p and RNU6A were selected and their expression verified by RT-qPCR. Next, a ranking on stability of the RG candidates were performed with two algorithms geNorm and RefFinder and the optimal number of RGs needed to normalize was determined. Our results indicate miR-191-5p as the most stable miRNA in all conditions but also that RNU6a, usually used as RG is the less stable gene. This study demonstrates the interest of rigorously evaluating candidate miRNAs as reference genes and the importance of the normalization process to study the expression of miRNAs in BM-MSCs or derived cell lines.
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7
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Walter SG, Randau TM, Hilgers C, Haddouti EM, Masson W, Gravius S, Burger C, Wirtz DC, Schildberg FA. Molecular and Functional Phenotypes of Human Bone Marrow-Derived Mesenchymal Stromal Cells Depend on Harvesting Techniques. Int J Mol Sci 2020; 21:ijms21124382. [PMID: 32575596 PMCID: PMC7352273 DOI: 10.3390/ijms21124382] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/30/2020] [Accepted: 06/17/2020] [Indexed: 02/06/2023] Open
Abstract
Mesenchymal stromal cells (MSC) harvested in different tissues from the same donor exhibit different phenotypes. Each phenotype is not only characterized by a certain pattern of cell surface markers, but also different cellular functionalities. Only recently were different harvesting and processing techniques found to contribute to this phenomenon as well. This study was therefore set up to investigate proteomic and functional properties of human bone marrow-derived MSCs (hBM-MSC). These were taken from the same tissue and donor site but harvested either as aspirate or bone chip cultures. Both MSC populations were profiled for MSC markers defined by the International Society for Cellular Therapy (ISCT), MSC markers currently under discussion and markers of particular interest. While classic ISCT MSC markers did not show any significant difference between aspirate and outgrowth hBM-MSCs, our additional characterization panel revealed distinct patterns of differentially expressed markers. Furthermore, hBM-MSCs from aspirate cultures demonstrated a significantly higher osteogenic differentiation potential than outgrowth MSCs, which could be confirmed using a transcriptional approach. Our comparison of MSC phenotypes obtained by different harvesting techniques suggests the need of future standardized harvesting, processing and phenotyping procedures in order to gain better comparability in the MSC field.
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Affiliation(s)
- Sebastian G. Walter
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
- Clinic for Cardiothoracic Surgery, University Hospital Cologne, 50937 Cologne, Germany
| | - Thomas M. Randau
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
| | - Cäcilia Hilgers
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
| | - El-Mustapha Haddouti
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
| | - Werner Masson
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
| | - Sascha Gravius
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
- Department of Orthopaedics and Trauma Surgery, University Medical Center Mannheim of University Heidelberg, 68167 Mannheim, Germany
| | - Christof Burger
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
| | - Dieter C. Wirtz
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
| | - Frank A. Schildberg
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, 53127 Bonn, Germany; (S.G.W.); (T.M.R.); (C.H.); (E.-M.H.); (W.M.); (S.G.); (C.B.); (D.C.W.)
- Correspondence:
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8
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Sun H, Wen X, Li H, Wu P, Gu M, Zhao X, Zhang Z, Hu S, Mao G, Ma R, Liao W, Zhang Z. Single-cell RNA-seq analysis identifies meniscus progenitors and reveals the progression of meniscus degeneration. Ann Rheum Dis 2019; 79:408-417. [PMID: 31871141 PMCID: PMC7034356 DOI: 10.1136/annrheumdis-2019-215926] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 11/21/2019] [Accepted: 12/07/2019] [Indexed: 12/26/2022]
Abstract
Objectives The heterogeneity of meniscus cells and the mechanism of meniscus degeneration is not well understood. Here, single-cell RNA sequencing (scRNA-seq) was used to identify various meniscus cell subsets and investigate the mechanism of meniscus degeneration. Methods scRNA-seq was used to identify cell subsets and their gene signatures in healthy human and degenerated meniscus cells to determine their differentiation relationships and characterise the diversity within specific cell types. Colony-forming, multi-differentiation assays and a mice meniscus injury model were used to identify meniscus progenitor cells. We investigated the role of degenerated meniscus progenitor (DegP) cell clusters during meniscus degeneration using computational analysis and experimental verification. Results We identified seven clusters in healthy human meniscus, including five empirically defined populations and two novel populations. Pseudotime analysis showed endothelial cells and fibrochondrocyte progenitors (FCP) existed at the pseudospace trajectory start. Melanoma cell adhesion molecule ((MCAM)/CD146) was highly expressed in two clusters. CD146+ meniscus cells differentiated into osteoblasts and adipocytes and formed colonies. We identified changes in the proportions of degenerated meniscus cell clusters and found a cluster specific to degenerative meniscus with progenitor cell characteristics. The reconstruction of four progenitor cell clusters indicated that FCP differentiation into DegP was an aberrant process. Interleukin 1β stimulation in healthy human meniscus cells increased CD318+ cells, while TGFβ1 attenuated the increase in CD318+ cells in degenerated meniscus cells. Conclusions The identification of meniscus progenitor cells provided new insights into cell-based meniscus tissue engineering, demonstrating a novel mechanism of meniscus degeneration, which contributes to the development of a novel therapeutic strategy.
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Affiliation(s)
- Hao Sun
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Guangzhou, China.,Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Xingzhao Wen
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Hongyi Li
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Peihui Wu
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Minghui Gu
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Xiaoyi Zhao
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Ziji Zhang
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Shu Hu
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Guping Mao
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Ruofan Ma
- Department of Orthopedics, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Weiming Liao
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
| | - Zhiqi Zhang
- Department of Joint Surgery, Sun Yat-sen University First Affiliated Hospital, Guangzhou, China
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9
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Hsu CY, Salazar MG, Miller S, Meyers C, Ding C, Hardy W, Péault B, James AW. Comparison of Human Tissue Microarray to Human Pericyte Transcriptome Yields Novel Perivascular Cell Markers. Stem Cells Dev 2019; 28:1214-1223. [PMID: 31264500 DOI: 10.1089/scd.2019.0106] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Human perivascular progenitor cells, including pericytes, are well-described multipotent mesenchymal cells giving rise to mesenchymal stem cells in culture. Despite the unique location of pericytes, specific antigens to distinguish human pericytes from other cell types are few. Here, we employed a human tissue microarray (Human Protein Atlas) to identify proteins that are strongly and specifically expressed in a pericytic location within human adipose tissue. Next, these results were cross-referenced with RNA sequencing data from human adipose tissue pericytes, as defined as a fluorescence activated cell sorting (FACS) purified CD146+CD34-CD31-CD45- cell population. Results showed that from 105,532 core biopsies of soft tissue, 229 proteins showed strong and specific perivascular immunoreactivity, the majority of which (155) were present in the tunica intima. Next, cross-referencing with the transcriptome of FACS-derived CD146+ pericytes yielded 25 consistently expressed genes/proteins, including 18 novel antigens. A majority of these transcripts showed maintained expression after culture propagation (56% of genes). Interestingly, many novel antigens within pericytes are regulators of osteogenic differentiation. In sum, our study demonstrates the existence of novel pericyte markers, some of which are conserved in culture that may be useful for future efforts to typify, isolate, and characterize human pericytes.
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Affiliation(s)
- Ching Yun Hsu
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Mario Gomez Salazar
- Center for Cardiovascular Science, University of Edinburgh, Edinburgh, United Kingdom.,MRC Center for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Sarah Miller
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Carolyn Meyers
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Catherine Ding
- Orthopaedic Hospital Research Center, University of California, Los Angeles, Los Angeles, California
| | - Winters Hardy
- Orthopaedic Hospital Research Center, University of California, Los Angeles, Los Angeles, California
| | - Bruno Péault
- Center for Cardiovascular Science, University of Edinburgh, Edinburgh, United Kingdom.,MRC Center for Regenerative Medicine, University of Edinburgh, Edinburgh, United Kingdom.,Orthopaedic Hospital Research Center, University of California, Los Angeles, Los Angeles, California
| | - Aaron W James
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland.,Orthopaedic Hospital Research Center, University of California, Los Angeles, Los Angeles, California
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10
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Kotha SS, Hayes BJ, Phong KT, Redd MA, Bomsztyk K, Ramakrishnan A, Torok-Storb B, Zheng Y. Engineering a multicellular vascular niche to model hematopoietic cell trafficking. Stem Cell Res Ther 2018; 9:77. [PMID: 29566751 PMCID: PMC5865379 DOI: 10.1186/s13287-018-0808-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 01/10/2018] [Accepted: 02/19/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The marrow microenvironment and vasculature plays a critical role in regulating hematopoietic cell recruitment, residence, and maturation. Extensive in vitro and in vivo studies have aimed to understand the marrow cell types that contribute to hematopoiesis and the stem cell environment. Nonetheless, in vitro models are limited by a lack of complex multicellular interactions, and cellular interactions are not easily manipulated in vivo. Here, we develop an engineered human vascular marrow niche to examine the three-dimensional cell interactions that direct hematopoietic cell trafficking. METHODS Using soft lithography and injection molding techniques, fully endothelialized vascular networks were fabricated in type I collagen matrix, and co-cultured under flow with embedded marrow fibroblast cells in the matrix. Marrow fibroblast (mesenchymal stem cells (MSCs), HS27a, or HS5) interactions with the endothelium were imaged via confocal microscopy and altered endothelial gene expression was analyzed with RT-PCR. Monocytes, hematopoietic progenitor cells, and leukemic cells were perfused through the network and their adhesion and migration was evaluated. RESULTS HS27a cells and MSCs interact directly with the vessel wall more than HS5 cells, which are not seen to make contact with the endothelial cells. In both HS27a and HS5 co-cultures, endothelial expression of junctional markers was reduced. HS27a co-cultures promote perfused monocytes to adhere and migrate within the vessel network. Hematopoietic progenitors rely on monocyte-fibroblast crosstalk to facilitate preferential recruitment within HS27a co-cultured vessels. In contrast, leukemic cells sense fibroblast differences and are recruited preferentially to HS5 and HS27a co-cultures, but monocytes are able to block this sensitivity. CONCLUSIONS We demonstrate the use of a microvascular platform that incorporates a tunable, multicellular composition to examine differences in hematopoietic cell trafficking. Differential recruitment of hematopoietic cell types to distinct fibroblast microenvironments highlights the complexity of cell-cell interactions within the marrow. This system allows for step-wise incorporation of cellular components to reveal the dynamic spatial and temporal interactions between endothelial cells, marrow-derived fibroblasts, and hematopoietic cells that comprise the marrow vascular niche. Furthermore, this platform has potential for use in testing therapeutics and personalized medicine in both normal and disease contexts.
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Affiliation(s)
- Surya S Kotha
- Department of Bioengineering, University of Washington, Brotman Building, 850 Republican Street, Seattle, WA, 98109, USA
| | - Brian J Hayes
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Kiet T Phong
- Department of Bioengineering, University of Washington, Brotman Building, 850 Republican Street, Seattle, WA, 98109, USA
| | | | - Karol Bomsztyk
- Department of Pharmacology, University of Washington, Seattle, WA, 98109, USA
| | - Aravind Ramakrishnan
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
- Department of Medicine, University of Washington, Seattle, WA, 98109, USA
| | - Beverly Torok-Storb
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Ying Zheng
- Department of Bioengineering, University of Washington, Brotman Building, 850 Republican Street, Seattle, WA, 98109, USA.
- Center for Cardiovascular Biology, Institute of Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, 98109, USA.
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11
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Abstract
It has been proposed that CD6, an important regulator of T cells, functions by interacting with its currently identified ligand, CD166, but studies performed during the treatment of autoimmune conditions suggest that the CD6-CD166 interaction might not account for important functions of CD6 in autoimmune diseases. The antigen recognized by mAb 3A11 has been proposed as a new CD6 ligand distinct from CD166, yet the identity of it is hitherto unknown. We have identified this CD6 ligand as CD318, a cell surface protein previously found to be present on various epithelial cells and many tumor cells. We found that, like CD6 knockout (KO) mice, CD318 KO mice are also protected in experimental autoimmune encephalomyelitis. In humans, we found that CD318 is highly expressed in synovial tissues and participates in CD6-dependent adhesion of T cells to synovial fibroblasts. In addition, soluble CD318 is chemoattractive to T cells and levels of soluble CD318 are selectively and significantly elevated in the synovial fluid from patients with rheumatoid arthritis and juvenile inflammatory arthritis. These results establish CD318 as a ligand of CD6 and a potential target for the diagnosis and treatment of autoimmune diseases such as multiple sclerosis and inflammatory arthritis.
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12
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O'Brien CM, Chy HS, Zhou Q, Blumenfeld S, Lambshead JW, Liu X, Kie J, Capaldo BD, Chung TL, Adams TE, Phan T, Bentley JD, McKinstry WJ, Oliva K, McMurrick PJ, Wang YC, Rossello FJ, Lindeman GJ, Chen D, Jarde T, Clark AT, Abud HE, Visvader JE, Nefzger CM, Polo JM, Loring JF, Laslett AL. New Monoclonal Antibodies to Defined Cell Surface Proteins on Human Pluripotent Stem Cells. Stem Cells 2017; 35:626-640. [PMID: 28009074 PMCID: PMC5412944 DOI: 10.1002/stem.2558] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 10/31/2016] [Accepted: 11/18/2016] [Indexed: 01/28/2023]
Abstract
The study and application of human pluripotent stem cells (hPSCs) will be enhanced by the availability of well‐characterized monoclonal antibodies (mAbs) detecting cell‐surface epitopes. Here, we report generation of seven new mAbs that detect cell surface proteins present on live and fixed human ES cells (hESCs) and human iPS cells (hiPSCs), confirming our previous prediction that these proteins were present on the cell surface of hPSCs. The mAbs all show a high correlation with POU5F1 (OCT4) expression and other hPSC surface markers (TRA‐160 and SSEA‐4) in hPSC cultures and detect rare OCT4 positive cells in differentiated cell cultures. These mAbs are immunoreactive to cell surface protein epitopes on both primed and naive state hPSCs, providing useful research tools to investigate the cellular mechanisms underlying human pluripotency and states of cellular reprogramming. In addition, we report that subsets of the seven new mAbs are also immunoreactive to human bone marrow‐derived mesenchymal stem cells (MSCs), normal human breast subsets and both normal and tumorigenic colorectal cell populations. The mAbs reported here should accelerate the investigation of the nature of pluripotency, and enable development of robust cell separation and tracing technologies to enrich or deplete for hPSCs and other human stem and somatic cell types. Stem Cells2017;35:626–640
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Affiliation(s)
- Carmel M O'Brien
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | - Hun S Chy
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | - Qi Zhou
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | | | - Jack W Lambshead
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | - Xiaodong Liu
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Joshua Kie
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Bianca D Capaldo
- The Walter and Eliza Hall Institute (WEHI), Parkville, Victoria, Australia.,Department of Medical Biology
| | - Tung-Liang Chung
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | - Timothy E Adams
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia
| | - Tram Phan
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia
| | - John D Bentley
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia
| | | | - Karen Oliva
- Department of Surgery, Cabrini Monash University, Malvern, Victoria, Australia
| | - Paul J McMurrick
- Department of Surgery, Cabrini Monash University, Malvern, Victoria, Australia
| | - Yu-Chieh Wang
- Department of Chemical Physiology.,Center for Regenerative Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Fernando J Rossello
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Geoffrey J Lindeman
- The Walter and Eliza Hall Institute (WEHI), Parkville, Victoria, Australia.,Department of Medicine, The University of Melbourne, Parkville, Victoria, Australia.,Department of Medical Oncology, The Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Di Chen
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, California, USA
| | - Thierry Jarde
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia.,Cancer Program, Monash Biomedicine Discovery Institute.,Centre for Cancer Research, Hudson Institute of Medical Research, Clayton, Victoria, Australia
| | - Amander T Clark
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, California, USA
| | - Helen E Abud
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia.,Cancer Program, Monash Biomedicine Discovery Institute
| | - Jane E Visvader
- The Walter and Eliza Hall Institute (WEHI), Parkville, Victoria, Australia.,Department of Medical Biology
| | - Christian M Nefzger
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Jose M Polo
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Jeanne F Loring
- Department of Chemical Physiology.,Center for Regenerative Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Andrew L Laslett
- Clayton and Parkville, CSIRO Manufacturing, Victoria, Australia.,Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
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13
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Abstract
The concept of pericyte has been changing over years. This cell type was believed to possess only a function of trophic support to endothelial cells and to maintain vasculature stabilization. In the last years, the discovery of multipotent ability of perivascular populations led to the concept of vessel/wall niche. Likewise, several perivascular populations have been identified in animal and human bone marrow. In this review, we provide an overview on bone marrow perivascular population, their cross-talk with other niche components, relationship with bone marrow stromal stem cells, and similarities and differences with the perivascular population of the vessel/wall niche. Finally, we focus on the regenerative potential of these cells and the forthcoming challenges related to their use as cell therapy products.
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Affiliation(s)
- Giuseppe Mangialardi
- Division of Experimental Cardiovascular Medicine, Bristol Heart Institute, University of Bristol, UK
| | - Andrea Cordaro
- Division of Experimental Cardiovascular Medicine, Bristol Heart Institute, University of Bristol, UK
| | - Paolo Madeddu
- Division of Experimental Cardiovascular Medicine, Bristol Heart Institute, University of Bristol, UK
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14
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Huang J, Woods P, Normolle D, Goff JP, Benos PV, Stehle CJ, Steinman RA. Downregulation of estrogen receptor and modulation of growth of breast cancer cell lines mediated by paracrine stromal cell signals. Breast Cancer Res Treat 2016; 161:229-243. [PMID: 27853906 DOI: 10.1007/s10549-016-4052-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 11/09/2016] [Indexed: 02/06/2023]
Abstract
PURPOSE Breast cancers have a poorer prognosis if estrogen receptor expression was lost during recurrence. It is unclear whether this conversion is cell autonomous or whether it can be promoted by the microenvironment during cancer dormancy. We explored the ability of marrow-derived stromal cell lines to arrest co-cultured breast cancer cells and suppress estrogen receptor alpha (ER) expression during arrest, facilitating the emergence of estrogen-independent breast cancer clones. METHODS Cancer cell growth, ER protein, microRNA, and mRNA levels were measured in breast cancer cell lines exposed to conditioned medium from marrow stromal lines in the presence and absence of estrogen and of signaling pathway modulators. RESULTS We demonstrate that paracrine signaling from the stromal cell line HS5 downregulated ER in T47D and MCF7 breast cancer cells. This occurred at the mRNA level and also through decreased ER protein stability. Additionally, conditioned medium (CM) from HS5 arrested the breast cancer cells in G0/G1 in part through interleukin-1 (IL1) and inhibited cancer cell growth despite the activation of proliferative pathways (Erk and AKT) by the CM. Similar findings were observed for CM from the hFOB 1.19 osteoblastic cell line but not from two other fibroblastic marrow lines, HS27A and KM101. HS5-CM inhibition of MCF7 proliferation could not be restored by exogenous ER, but was restored by the IL1-antagonist IL1RA. In the presence of IL1RA, HS5-CM activation of AKT and Erk enabled the outgrowth of breast cancer cells with suppressed ER that were fulvestrant-resistant and estrogen-independent. CONCLUSIONS We conclude that marrow-derived stromal cells can destabilize estrogen receptor protein to convert the ER status of growth-arrested ER+ breast cancer cell lines. The balance between stromal pro- and anti-proliferative signals controlled the switch from a dormant phenotype to estrogen-independent cancer cell growth.
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Affiliation(s)
- J Huang
- Department of Medicine, University of Pittsburgh School of Medicine and University of Pittsburgh Cancer Institute, Suite 2.26f Hillman Cancer Center, 5117 Centre Avenue, Pittsburgh, PA, 15213, USA.,School of Medicine, Tsinghua University, Beijing, China
| | - P Woods
- Department of Medicine, University of Pittsburgh School of Medicine and University of Pittsburgh Cancer Institute, Suite 2.26f Hillman Cancer Center, 5117 Centre Avenue, Pittsburgh, PA, 15213, USA
| | - D Normolle
- Department of Biostatistics, University of Pittsburgh and University of Pittsburgh Cancer Institute, Pittsburgh, USA
| | - J P Goff
- Department of Medicine, University of Pittsburgh School of Medicine and University of Pittsburgh Cancer Institute, Suite 2.26f Hillman Cancer Center, 5117 Centre Avenue, Pittsburgh, PA, 15213, USA
| | - P V Benos
- Department of Computational Biology, University of Pittsburgh and University of Pittsburgh Cancer Institute, Pittsburgh, USA
| | - C J Stehle
- Department of Medicine, University of Pittsburgh School of Medicine and University of Pittsburgh Cancer Institute, Suite 2.26f Hillman Cancer Center, 5117 Centre Avenue, Pittsburgh, PA, 15213, USA
| | - R A Steinman
- Department of Medicine, University of Pittsburgh School of Medicine and University of Pittsburgh Cancer Institute, Suite 2.26f Hillman Cancer Center, 5117 Centre Avenue, Pittsburgh, PA, 15213, USA. .,Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, USA.
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15
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Quantitative proteomic analysis and comparison of two bone marrow stromal cell lines using the SILAC method. Exp Hematol 2016; 44:1059-1071. [PMID: 27539861 DOI: 10.1016/j.exphem.2016.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 07/11/2016] [Accepted: 08/04/2016] [Indexed: 01/10/2023]
Abstract
Two human bone marrow stromal cell lines, HS5 and HS27a, co-cultured with myeloid cells, have frequently been used in studies of cross talk between cells in the bone marrow microenvironment and hematopoietic cells. Altered expression of proteins is typically associated with cell-cell signal transduction and regulation of cellular functions. Many studies have focused on key proteins that contribute to functional differences in cell co-culture models, but global quantitative proteome analysis of HS5 and HS27a has not been performed. We employed the stable isotope labeling by amino acids in cell culture (SILAC) method using two stable isotopes each of arginine and lysine to label proteins in the two cell lines. Labeled proteins were analyzed by 2-D ultrahigh-resolution liquid chromatography- LTQ/Orbitrap mass spectrometry. Among 4,213 unique identified and annotated proteins in the cell lines, 1,462 were detected in two independent experiments. Of these, 69 exhibited significant upregulation and 48 significant downregulation (>95% confidence) in HS27a relative to HS5 cells. Gene ontology term and pathway analysis indicated that the differentially regulated proteins were involved in cellular movement, cell-to-cell signaling and interaction, and hematologic system development and function. A total of 55 items were identified in both genomic and proteomic databases. Quantitative reverse transcription polymerase chain reaction and Western blotting were performed on 7 proteins randomly selected from 28 differentially expressed proteins that were identified in both databases and were involved in the top networks/pathways. We observed a decrease in apoptosis in co-cultured KG1a cells when integrin αV was inhibited in HS27a cells, which suggested the functional role of integrin αV in the co-culture system. The integrated genomic/proteomic approach described here, and the identified proteins, will provide a useful basis for further elucidation of molecular mechanisms in the bone marrow microenvironment and for ongoing studies of cross talk among stromal cells and myeloma cells in co-culture systems.
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