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Jiang C, Gonzalez-Anton S, Li X, Mi E, Wu L, Zhao H, Zhang G, Lu A, Lo Celso C, Ma D. General anaesthetics reduce acute lymphoblastic leukaemia malignancies in vitro and in vivovia CXCR4 and osteopontin mediated mechanisms. F1000Res 2024; 11:1491. [PMID: 38798305 PMCID: PMC11128051 DOI: 10.12688/f1000research.125877.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/08/2024] [Indexed: 05/29/2024] Open
Abstract
Background Acute lymphoblastic leukaemia (ALL) is a common type of cancer in children. General anaesthetics are often used on patients undergoing painful procedures during ALL treatments but their effects on ALL malignancy remain unknown. Herein, we aim to study the effect of propofol and sevoflurane on the migration, homing and chemoresistance of ALL cells. Methods NALM-6 and Reh cells were treated with propofol (5 and 10 μg/ml) or sevoflurane (3.6%) in vitro for six hours. Then, cells were harvested for adhesion assay and migration assay in vitro. In in vivo experiments, GFP-NALM-6 cells were pre-treated with propofol (10 μg/ml) or sevoflurane (3.6%) for six hours. Then, cells were injected intravenously to C57BL/6 female mice followed by intravital microscopy. For chemoresistance study, cells were treated with rising concentrations of Ara-c (0.05-50 nM) plus 10μg/ml of propofol or Ara-C plus 3.6% of sevoflurane for 4 hours, followed by the assessment of cell viability via CCK-8 assay and detection of autophagy via flow cytometry. Results Both anaesthetics reduced in vivo migration and in vivo homing as exemplified by 1) the reduction in the number of cells entering the bone marrow and 2) the disturbance in homing location in relation to endosteal surface. Our results indicated that general anaesthetics reduced the surface CXCR4 expression and the adhesion of leukaemia cells to thrombin cleaved osteopontin (OPN) was reduced. Those changes might result in the alterations in migration and homing. In addition, both anaesthetics sensitised ALL cells to Ara-c possibly through CXCR4 mediated mechanisms. Propofol but not sevoflurane enhanced chemo-related cell death via inducing cytotoxic autophagy. Conclusion Together, our data suggest that both propofol and sevoflurane could reduce ALL migration, and homing in vivo and in vitro via CXCR4 and OPN mediated mechanisms. Both anaesthetics could sensitise ALL cells to chemotherapy possibly via CXCR4 mediated mechanisms.
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Affiliation(s)
- Cui Jiang
- Division of Anaesthetics, Pain Medicine and Intensive Care, Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, SW10 9NH, UK
| | - Sara Gonzalez-Anton
- Lo Celso Laboratory, The Francis Crick Institute, London, UK
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, NW1 1AT, UK
- Department of Life Sciences, Imperial College London, South Kensington Campus, Imperial College London, London, SW7 2AZ, UK
| | - Xiaomeng Li
- Division of Anaesthetics, Pain Medicine and Intensive Care, Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, SW10 9NH, UK
| | - Emma Mi
- Division of Anaesthetics, Pain Medicine and Intensive Care, Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, SW10 9NH, UK
| | - Lingzhi Wu
- Division of Anaesthetics, Pain Medicine and Intensive Care, Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, SW10 9NH, UK
| | - Hailin Zhao
- Division of Anaesthetics, Pain Medicine and Intensive Care, Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, SW10 9NH, UK
| | - Ge Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Aiping Lu
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Cristina Lo Celso
- Lo Celso Laboratory, The Francis Crick Institute, London, UK
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, NW1 1AT, UK
- Department of Life Sciences, Imperial College London, South Kensington Campus, Imperial College London, London, SW7 2AZ, UK
| | - Daqing Ma
- Division of Anaesthetics, Pain Medicine and Intensive Care, Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, SW10 9NH, UK
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2
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Tang T, Zhu Q, Liu S, Dai H, Li Y, Tang C, Chen K, Jiang M, Zhu L, Zhou X, Chen S, Zheng Z, Jiang ZX. 19F MRI-fluorescence imaging dual-modal cell tracking with partially fluorinated nanoemulsions. Front Bioeng Biotechnol 2022; 10:1049750. [DOI: 10.3389/fbioe.2022.1049750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
As a noninvasive “hot-spot” imaging technology, fluorine-19 magnetic resonance imaging (19F MRI) has been extensively used in cell tracking. However, the peculiar physicochemical properties of perfluorocarbons (PFCs), the most commonly used 19F MRI agents, sometimes cause low sensitivity, poor cell uptake, and misleading results. In this study, a partially fluorinated agent, perfluoro-tert-butyl benzyl ether, was used to formulate a 19F MRI-fluorescence imaging (FLI) dual-modal nanoemulsion for cell tracking. Compared with PFCs, the partially fluorinated agent showed considerably improved physicochemical properties, such as lower density, shorter longitudinal relaxation times, and higher solubility to fluorophores, while maintaining high 19F MRI sensitivity. After being formulated into stable, monodisperse, and paramagnetic Fe3+-promoted nanoemulsions, the partially fluorinated agent was used in 19F MRI-FLI dual imaging tracking of lung cancer A549 cells and macrophages in an inflammation mouse model.
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Generating patient-derived ascites-dependent xenograft mouse models of peritoneal carcinomatosis. STAR Protoc 2022; 3:101548. [PMID: 35842864 PMCID: PMC9294250 DOI: 10.1016/j.xpro.2022.101548] [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: 03/23/2022] [Revised: 05/26/2022] [Accepted: 06/17/2022] [Indexed: 11/24/2022] Open
Abstract
Clinically relevant animal models are crucial for effective development of therapeutics for peritoneal carcinomatosis (PC). This protocol describes the generation of patient-derived ascites-dependent xenograft (PDADX) models from the cellular component of ascites. The use of routine intraperitoneal injection of the fluid component of ascites is analogous to the biological events occurring intra-abdominally in patients with PC. By serving as a proxy, PDADX models represent a valuable tool for preclinical testing of new therapeutics for PC. For complete details on the use and execution of this protocol, please refer to Hendrikson et al. (2022). Generation of patient-derived ascites-dependent xenograft (PDADX) models Serial passages of PDADX tumors in mice Evaluation of patient-specific drug efficacy utilizing PDADX models
Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
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Jain R, Tikoo S, On K, Martinez B, Dervish S, Cavanagh LL, Weninger W. Visualizing murine breast and melanoma tumor microenvironment using intravital multiphoton microscopy. STAR Protoc 2021; 2:100722. [PMID: 34458865 PMCID: PMC8379651 DOI: 10.1016/j.xpro.2021.100722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Intravital multiphoton imaging of the tumor milieu allows for the dissection of intricate and dynamic biological processes in situ. Herein, we present a step-by-step protocol for setting up an experimental cancer imaging model that has been optimized for solid tumors such as breast cancer and melanoma implanted in the flanks of mice. This protocol can be utilized for dissecting tumor-immune cell dynamics in vivo or other tumor-specific biological questions. For complete details on the use of this protocol for intravital imaging of breast cancer, please refer to Tikoo et al. (2021a), and for intravital imaging of melanoma, please refer to Tikoo et al. (2021b). Detailed protocol for setting up high-resolution intravital imaging of murine tumors 3D printing of custom stage inserts for tumor stabilization Procedures for cannulation of blood vessels Surgical preparation and tissue stabilization for imaging tumor milieu in vivo
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Affiliation(s)
- Rohit Jain
- Centenary Institute, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Shweta Tikoo
- Centenary Institute, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Kathy On
- Centenary Institute, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Brendon Martinez
- Centenary Institute, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Suat Dervish
- Centenary Institute, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Lois L Cavanagh
- Centenary Institute, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia
| | - Wolfgang Weninger
- Centenary Institute, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia.,Department of Dermatology, Medical University of Vienna, Vienna 1090, Austria
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Miller AK, Brown JS, Enderling H, Basanta D, Whelan CJ. The Evolutionary Ecology of Dormancy in Nature and in Cancer. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.676802] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Dormancy is an inactive period of an organism’s life cycle that permits it to survive through phases of unfavorable conditions in highly variable environments. Dormancy is not binary. There is a continuum of dormancy phenotypes that represent some degree of reduced metabolic activity (hypometabolism), reduced feeding, and reduced reproduction or proliferation. Similarly, normal cells and cancer cells exhibit a range of states from quiescence to long-term dormancy that permit survival in adverse environmental conditions. In contrast to organismal dormancy, which entails a reduction in metabolism, dormancy in cells (both normal and cancer) is primarily characterized by lack of cell division. “Cancer dormancy” also describes a state characterized by growth stagnation, which could arise from cells that are not necessarily hypometabolic or non-proliferative. This inconsistent terminology leads to confusion and imprecision that impedes progress in interdisciplinary research between ecologists and cancer biologists. In this paper, we draw parallels and contrasts between dormancy in cancer and other ecosystems in nature, and discuss the potential for studies in cancer to provide novel insights into the evolutionary ecology of dormancy.
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Affolter A, Lammert A, Kern J, Scherl C, Rotter N. Precision Medicine Gains Momentum: Novel 3D Models and Stem Cell-Based Approaches in Head and Neck Cancer. Front Cell Dev Biol 2021; 9:666515. [PMID: 34307351 PMCID: PMC8296983 DOI: 10.3389/fcell.2021.666515] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/30/2021] [Indexed: 12/12/2022] Open
Abstract
Despite the current progress in the development of new concepts of precision medicine for head and neck squamous cell carcinoma (HNSCC), in particular targeted therapies and immune checkpoint inhibition (CPI), overall survival rates have not improved during the last decades. This is, on the one hand, caused by the fact that a significant number of patients presents with late stage disease at the time of diagnosis, on the other hand HNSCC frequently develop therapeutic resistance. Distinct intratumoral and intertumoral heterogeneity is one of the strongest features in HNSCC and has hindered both the identification of specific biomarkers and the establishment of targeted therapies for this disease so far. To date, there is a paucity of reliable preclinical models, particularly those that can predict responses to immune CPI, as these models require an intact tumor microenvironment (TME). The "ideal" preclinical cancer model is supposed to take both the TME as well as tumor heterogeneity into account. Although HNSCC patients are frequently studied in clinical trials, there is a lack of reliable prognostic biomarkers allowing a better stratification of individuals who might benefit from new concepts of targeted or immunotherapeutic strategies. Emerging evidence indicates that cancer stem cells (CSCs) are highly tumorigenic. Through the process of stemness, epithelial cells acquire an invasive phenotype contributing to metastasis and recurrence. Specific markers for CSC such as CD133 and CD44 expression and ALDH activity help to identify CSC in HNSCC. For the majority of patients, allocation of treatment regimens is simply based on histological diagnosis and on tumor location and disease staging (clinical risk assessments) rather than on specific or individual tumor biology. Hence there is an urgent need for tools to stratify HNSCC patients and pave the way for personalized therapeutic options. This work reviews the current literature on novel approaches in implementing three-dimensional (3D) HNSCC in vitro and in vivo tumor models in the clinical daily routine. Stem-cell based assays will be particularly discussed. Those models are highly anticipated to serve as a preclinical prediction platform for the evaluation of stable biomarkers and for therapeutic efficacy testing.
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Affiliation(s)
- Annette Affolter
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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7
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Choo YW, Jeong J, Jung K. Recent advances in intravital microscopy for investigation of dynamic cellular behavior in vivo. BMB Rep 2021. [PMID: 32475382 PMCID: PMC7396917 DOI: 10.5483/bmbrep.2020.53.7.069] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Currently, most biological research relies on conventional experimental techniques that allow only static analyses at certain time points in vitro or ex vivo. However, if one could visualize cellular dynamics in living organisms, that would provide a unique opportunity to study key biological phenomena in vivo. Intravital microscopy (IVM) encompasses diverse optical systems for direct viewing of objects, including biological structures and individual cells in live animals. With the current development of devices and techniques, IVM addresses important questions in various fields of biological and biomedical sciences. In this mini-review, we provide a general introduction to IVM and examples of recent applications in the field of immunology, oncology, and vascular biology. We also introduce an advanced type of IVM, dubbed real-time IVM, equipped with video-rate resonant scanning. Since the real-time IVM can render cellular dynamics with high temporal resolution in vivo, it allows visualization and analysis of rapid biological processes.
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Affiliation(s)
- Yeon Woong Choo
- Department of Biomedical Sciences, BK21 Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Juhee Jeong
- Department of Biomedical Sciences, BK21 Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Keehoon Jung
- Department of Biomedical Sciences, BK21 Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul 03080; Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul 03080; Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul 03080, Korea
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8
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Park J, Kim JY, Kim YR, Huang M, Chang JY, Sim AY, Jung H, Lee WT, Hyun YM, Lee JE. Reparative System Arising from CCR2(+) Monocyte Conversion Attenuates Neuroinflammation Following Ischemic Stroke. Transl Stroke Res 2021; 12:879-893. [PMID: 33409730 PMCID: PMC8421302 DOI: 10.1007/s12975-020-00878-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/20/2020] [Accepted: 11/16/2020] [Indexed: 01/22/2023]
Abstract
Monocytes recruitment from the blood to inflamed tissues following ischemic stroke is an important immune response to wound healing and tissue repair. Mouse monocytes can be endogenously divided into two distinct populations: pro-inflammatory or classical monocytes that express CCR2highCX3CR1low and circulate in blood, and anti-inflammatory or non-classical monocytes that express CCR2lowCX3CR1high and patrol locally. In this study of transgenic mice with functional CX3CR1GFP/+ or CX3CR1GFP/+-CCR2RFP/+, we found that CCR2highCX3CR1low monocytes recruited to the injured brain were cytokine-dependently converted into CCR2lowCX3CR1high macrophages, especially under the influence of IL-4 and IL-13, thereby attenuating the neuroinflammation following sterile ischemic stroke. The overall data suggest that (1) the regulation of monocyte-switching is one of the ultimate reparative strategies in ischemic stroke, and (2) the adaptation of monocytes in a locally inflamed milieu is vital to alleviating the effects of ischemic stroke through innate immunity.
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Affiliation(s)
- Joohyun Park
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Youl Kim
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yu Rim Kim
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Meiying Huang
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ji Young Chang
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - A Young Sim
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hosung Jung
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Won Taek Lee
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young-Min Hyun
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea. .,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Jong Eun Lee
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea. .,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea. .,Brain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.
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9
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Farino CJ, Pradhan S, Slater JH. The Influence of Matrix-Induced Dormancy on Metastatic Breast Cancer Chemoresistance. ACS APPLIED BIO MATERIALS 2020; 3:5832-5844. [DOI: 10.1021/acsabm.0c00549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Cindy J. Farino
- Department of Biomedical Engineering, University of Delaware, 150 Academy Street, 161 Colburn Lab, Newark, Delaware 19716, United States
| | - Shantanu Pradhan
- Department of Biomedical Engineering, University of Delaware, 150 Academy Street, 161 Colburn Lab, Newark, Delaware 19716, United States
| | - John H. Slater
- Department of Biomedical Engineering, University of Delaware, 150 Academy Street, 161 Colburn Lab, Newark, Delaware 19716, United States
- Department of Material Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, Delaware 19716, United States
- Delaware Biotechnology Institute, 15 Innovation Way, Newark, Delaware 19711, United States
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10
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Ahn SY, Maeng YS, Kim YR, Choe YH, Hwang HS, Hyun YM. In vivo monitoring of dynamic interaction between neutrophil and human umbilical cord blood-derived mesenchymal stem cell in mouse liver during sepsis. Stem Cell Res Ther 2020; 11:44. [PMID: 32014040 PMCID: PMC6998265 DOI: 10.1186/s13287-020-1559-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/30/2019] [Accepted: 01/09/2020] [Indexed: 12/24/2022] Open
Abstract
Background Sepsis is a global inflammatory disease that causes death. It has been reported that mesenchymal stem cell (MSC) treatment can attenuate inflammatory and septic symptoms. In this study, we investigated how interactions between neutrophils and human umbilical cord blood (hUCB)-MSCs in the liver of septic mice are involved in mitigating sepsis that is mediated by MSCs. Accordingly, we aimed to determine whether hUCB-MSC application could be an appropriate treatment for sepsis. Methods To induce septic condition, lipopolysaccharide (LPS) was intraperitoneally (i.p.) injected into mice 24 h after the intravenous (i.v.) injection of saline or hUCB-MSCs. To determine the effect of hUCB-MSCs on the immune response during sepsis, histologic analysis, immunoassays, and two-photon intravital imaging were performed 6 h post-LPS injection. For the survival study, mice were monitored for 6 days after LPS injection. Results The injection (i.v.) of hUCB-MSCs alleviated the severity of LPS-induced sepsis by increasing IL-10 levels (p < 0.001) and decreasing mortality (p < 0.05) in septic mice. In addition, this significantly reduced the recruitment of neutrophils (p < 0.001) to the liver. In hUCB-MSC-treated condition, we also observed several distinct patterns of dynamic interactions between neutrophils and hUCB-MSCs in the inflamed mouse liver, as well as vigorous interactions between hepatic stellate cells (HSCs or ito cells) and hUCB-MSCs. Interestingly, hUCB-MSCs that originated from humans were not recognized as foreign in the mouse body and consequently did not cause graft rejection. Conclusions These distinct interaction patterns between innate immune cells and hUCB-MSCs demonstrated that hUCB-MSCs have beneficial effects against LPS-induced sepsis through associations with neutrophils. In addition, the immunomodulatory properties of hUCB-MSCs might enable immune evasion in the host. Taken together, our results suggest the prospects of hUCB-MSCs as a therapeutic tool to inhibit inflammation and alleviate pathological immune responses such as sepsis.
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Affiliation(s)
- Sung Yong Ahn
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yong-Sun Maeng
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Republic of Korea.,Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yu Rim Kim
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,BK21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young Ho Choe
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,BK21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Han Sung Hwang
- Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea.
| | - Young-Min Hyun
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea. .,BK21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Abstract
PURPOSE OF REVIEW The goal of this review is to summarize recent experimental and clinical evidence for metastatic latency and the molecular mechanisms that regulate tumor dormancy in the bone. RECENT FINDINGS Tumor dormancy contributes to the progression of metastasis and thus has significant clinical implications for prognosis and treatment. Tumor-intrinsic signaling and specialized bone marrow niches play a pivotal role in determining the dormancy status of bone disseminated tumor cells. Experimental models have provided significant insight into the effects of the bone microenvironment on tumor cells; however, these models remain limited in their ability to study dormancy. Despite recent advances in the mechanistic understanding of how tumor cells remain dormant in the bone for prolonged periods of time, the signals that trigger spontaneous dormancy escape remain unclear. This review highlights the need for further investigation of mechanisms underlying tumor dormancy using clinically relevant models.
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Affiliation(s)
- Miranda E Clements
- Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Rachelle W Johnson
- Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
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