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Chen X, Liu C, Wang J, Du C. Hematopoietic Stem Cells as an Integrative Hub Linking Lifestyle to Cardiovascular Health. Cells 2024; 13:712. [PMID: 38667327 PMCID: PMC11049205 DOI: 10.3390/cells13080712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/10/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Despite breakthroughs in modern medical care, the incidence of cardiovascular disease (CVD) is even more prevalent globally. Increasing epidemiologic evidence indicates that emerging cardiovascular risk factors arising from the modern lifestyle, including psychosocial stress, sleep problems, unhealthy diet patterns, physical inactivity/sedentary behavior, alcohol consumption, and tobacco smoking, contribute significantly to this worldwide epidemic, while its underpinning mechanisms are enigmatic. Hematological and immune systems were recently demonstrated to play integrative roles in linking lifestyle to cardiovascular health. In particular, alterations in hematopoietic stem cell (HSC) homeostasis, which is usually characterized by proliferation, expansion, mobilization, megakaryocyte/myeloid-biased differentiation, and/or the pro-inflammatory priming of HSCs, have been shown to be involved in the persistent overproduction of pro-inflammatory myeloid leukocytes and platelets, the cellular protagonists of cardiovascular inflammation and thrombosis, respectively. Furthermore, certain lifestyle factors, such as a healthy diet pattern and physical exercise, have been documented to exert cardiovascular protective effects through promoting quiescence, bone marrow retention, balanced differentiation, and/or the anti-inflammatory priming of HSCs. Here, we review the current understanding of and progression in research on the mechanistic interrelationships among lifestyle, HSC homeostasis, and cardiovascular health. Given that adhering to a healthy lifestyle has become a mainstream primary preventative approach to lowering the cardiovascular burden, unmasking the causal links between lifestyle and cardiovascular health from the perspective of hematopoiesis would open new opportunities to prevent and treat CVD in the present age.
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Affiliation(s)
| | | | - Junping Wang
- State Key Laboratory of Trauma and Chemical Poisoning, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing 400038, China; (X.C.); (C.L.)
| | - Changhong Du
- State Key Laboratory of Trauma and Chemical Poisoning, Institute of Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing 400038, China; (X.C.); (C.L.)
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2
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Singh S, Paul D, Nath V, A R. Exosomes: current knowledge and future perspectives. Tissue Barriers 2024; 12:2232248. [PMID: 37439246 PMCID: PMC11042064 DOI: 10.1080/21688370.2023.2232248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 06/27/2023] [Indexed: 07/14/2023] Open
Abstract
Exosomes are membrane-bound micro-vesicles that possess endless therapeutic potential for treatment of numerous pathologies including autoimmune, cardiovascular, ocular, and nervous disorders. Despite considerable knowledge about exosome biogenesis and secretion, still, there is a lack of information regarding exosome uptake by cell types and internal signaling pathways through which these exosomes process cellular response. Exosomes are key components of cell signaling and intercellular communication. In central nervous system (CNS), exosomes can penetrate BBB and maintain homeostasis by myelin sheath regulation and the waste products elimination. Therefore, the current review summarizes role of exosomes and their use as biomarkers in cardiovascular, nervous and ocular disorders. This aspect of exosomes provides positive hope to monitor disease development and enable early diagnosis and treatment optimization. In this review, we have summarized recent findings on physiological and therapeutic effects of exosomes and also attempt to provide insights about stress-preconditioned exosomes and stem cell-derived exosomes.
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Affiliation(s)
- Swati Singh
- College of Pharmacy, JSS Academy of Technical Sciences, Noida, Uttar Pradesh, India
| | - Deepraj Paul
- College of Pharmacy, JSS Academy of Technical Sciences, Noida, Uttar Pradesh, India
| | - Virendra Nath
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, India
| | - Rohini A
- College of Pharmacy, JSS Academy of Technical Sciences, Noida, Uttar Pradesh, India
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3
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Quadri Z, Elsherbini A, Bieberich E. Extracellular vesicles in pharmacology: Novel approaches in diagnostics and therapy. Pharmacol Res 2022; 175:105980. [PMID: 34863822 PMCID: PMC8760625 DOI: 10.1016/j.phrs.2021.105980] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/03/2021] [Accepted: 11/09/2021] [Indexed: 01/03/2023]
Abstract
Exosomes are nano-sized lipid vesicles that are produced by all eukaryotic cells, and they typically range in size from 30 to 150 nm. Exosomes were discovered almost 40 years ago; however, the last two decades have attracted considerable attention due to exosomes' inherent abilities to shuttle nucleic acids, lipids and proteins between cells, along with their natural affinity to exosome target cells. From a pharmaceutical perspective, exosomes are regarded as naturally produced nanoparticle drug delivery vehicles. The application of exosomes as a means of drug delivery offers critical advantages compared to other nanoparticulate drug delivery systems, such as liposomes and polymeric nanoparticles. These advantages are due to the exosomes' intrinsic features, such as low immunogenicity, biocompatibility, stability, and their ability to overcome biological barriers. Herein, we outline the structure and origin of exosomes, as well as their biological functions. We also touch upon recent advances in exosome labeling, imaging and drug loading. Finally, we discuss exosomes in targeted drug delivery and clinical trial development.
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Affiliation(s)
- Zainuddin Quadri
- Department of Physiology, University of Kentucky College of Medicine, Lexington, KY 40536, United States; Veterans Affairs Medical Center, Lexington, KY 40502, United States
| | - Ahmed Elsherbini
- Veterans Affairs Medical Center, Lexington, KY 40502, United States
| | - Erhard Bieberich
- Department of Physiology, University of Kentucky College of Medicine, Lexington, KY 40536, United States; Veterans Affairs Medical Center, Lexington, KY 40502, United States.
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4
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Jayaraman S, Gnanasampanthapandian D, Rajasingh J, Palaniyandi K. Stem Cell-Derived Exosomes Potential Therapeutic Roles in Cardiovascular Diseases. Front Cardiovasc Med 2021; 8:723236. [PMID: 34447796 PMCID: PMC8382889 DOI: 10.3389/fcvm.2021.723236] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 07/12/2021] [Indexed: 12/12/2022] Open
Abstract
Owing to myocardial abnormalities, cardiac ailments are considered to be the major cause of morbidity and mortality worldwide. According to a recent study, membranous vesicles that are produced naturally, termed as "exosomes", have emerged as the potential candidate in the field of cardiac regenerative medicine. A wide spectrum of stem cells has also been investigated in the treatment of cardiovascular diseases (CVD). Exosomes obtained from the stem cells are found to be cardioprotective and offer great hope in the treatment of CVD. The basic nature of exosomes is to deal with the intracellular delivery of both proteins and nucleic acids. This activity of exosomes helps us to rely on them as the attractive pharmaceutical delivery agents. Most importantly, exosomes derived from microRNAs (miRNAs) hold great promise in assessing the risk of CVD, as they serve as notable biomarkers of the disease. Exosomes are small, less immunogenic, and lack toxicity. These nanovesicles harbor immense potential as a therapeutic entity and would provide fruitful benefits if consequential research were focused on their upbringing and development as a useful diagnostic and therapeutic tool in the field of medicine.
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Affiliation(s)
- Selvaraj Jayaraman
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Dhanavathy Gnanasampanthapandian
- Cancer Science Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Chennai, India
| | - Johnson Rajasingh
- Department of Bioscience Research & Medicine-Cardiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Kanagaraj Palaniyandi
- Cancer Science Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Chennai, India
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5
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Rezaie J, Rahbarghazi R, Pezeshki M, Mazhar M, Yekani F, Khaksar M, Shokrollahi E, Amini H, Hashemzadeh S, Sokullu SE, Tokac M. Cardioprotective role of extracellular vesicles: A highlight on exosome beneficial effects in cardiovascular diseases. J Cell Physiol 2019; 234:21732-21745. [PMID: 31140622 DOI: 10.1002/jcp.28894] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/12/2019] [Accepted: 05/14/2019] [Indexed: 12/15/2022]
Abstract
Extracellular vesicles (EVs) are nano-sized vesicles, released from many cell types including cardiac cells, have recently emerged as intercellular communication tools in cell dynamics. EVs are an important mediator of signaling within cells that influencing the functional behavior of the target cells. In heart complex, cardiac cells can easily use EVs to transport bioactive molecules such as proteins, lipids, and RNAs to the regulation of neighboring cell function. Cross-talk between intracardiac cells plays pivotal roles in the heart homeostasis and in adaptive responses of the heart to stress. EVs were released by cardiomyocytes under baseline conditions, but stress condition such as hypoxia intensifies secretome capacity. EVs secreted by cardiac progenitor cells and cardiosphere-derived cells could be pinpointed as important mediators of cardioprotection and cardiogenesis. Furthermore, EVs from many different types of stem cells could potentially exert a therapeutic effect on the damaged heart. Recent evidence shows that cardiac-derived EVs are rich in microRNAs, suggesting a key role in the controlling of cellular processes. EVs harboring exosomes may be clinically useful in cell-free therapy approaches and potentially act as prognosis and diagnosis biomarkers of cardiovascular diseases.
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Affiliation(s)
- Jafar Rezaie
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Milad Pezeshki
- Department of Biology, Faculty of Science, Arak University, Arak, Iran
| | - Mahdi Mazhar
- Student Research Committee, Urmia University of Medical Science, Urmia, Iran
| | - Farshid Yekani
- Department of Animal Biology, Faculty of Biological Science, Kharazmi University, Tehran, Iran
| | - Majid Khaksar
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elhameh Shokrollahi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Amini
- Department of General and Vascular Surgery, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shahriar Hashemzadeh
- Department of General and Vascular Surgery, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sadiye Emel Sokullu
- Engineering Sciences, Bioengineering Department, Faculty of Engineering and Architecture, Izmir Katip Celebi University, Izmir, Turkey
| | - Mehmet Tokac
- Cardiology Department, Medical Faculty, Izmir Katip Celebi University, Izmir, Turkey
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Dinh PUC, Cores J, Hensley MT, Vandergriff AC, Tang J, Allen TA, Caranasos TG, Adler KB, Lobo LJ, Cheng K. Derivation of therapeutic lung spheroid cells from minimally invasive transbronchial pulmonary biopsies. Respir Res 2017; 18:132. [PMID: 28666430 PMCID: PMC5493087 DOI: 10.1186/s12931-017-0611-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/12/2017] [Indexed: 12/21/2022] Open
Abstract
Background Resident stem and progenitor cells have been identified in the lung over the last decade, but isolation and culture of these cells remains a challenge. Thus, although these lung stem and progenitor cells provide an ideal source for stem-cell based therapy, mesenchymal stem cells (MSCs) remain the most popular cell therapy product for the treatment of lung diseases. Surgical lung biopsies can be the tissue source but such procedures carry a high risk of mortality. Methods In this study we demonstrate that therapeutic lung cells, termed “lung spheroid cells” (LSCs) can be generated from minimally invasive transbronchial lung biopsies using a three-dimensional culture technique. The cells were then characterized by flow cytometry and immunohistochemistry. Angiogenic potential was tested by in-vitro HUVEC tube formation assay. In-vivo bio- distribution of LSCs was examined in athymic nude mice after intravenous delivery. Results From one lung biopsy, we are able to derive >50 million LSC cells at Passage 2. These cells were characterized by flow cytometry and immunohistochemistry and were shown to represent a mixture of lung stem cells and supporting cells. When introduced systemically into nude mice, LSCs were retained primarily in the lungs for up to 21 days. Conclusion Here, for the first time, we demonstrated that direct culture and expansion of human lung progenitor cells from pulmonary tissues, acquired through a minimally invasive biopsy, is possible and straightforward with a three-dimensional culture technique. These cells could be utilized in long-term expansion of lung progenitor cells and as part of the development of cell-based therapies for the treatment of lung diseases such as chronic obstructive pulmonary disease (COPD) and idiopathic pulmonary fibrosis (IPF). Electronic supplementary material The online version of this article (doi:10.1186/s12931-017-0611-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Phuong-Uyen C Dinh
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, 1060 William Moore Drive, RB306, Raleigh, NC 27607, NC, USA
| | - Jhon Cores
- Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh/Chapel Hill, NC, USA
| | - M Taylor Hensley
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, 1060 William Moore Drive, RB306, Raleigh, NC 27607, NC, USA
| | - Adam C Vandergriff
- Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh/Chapel Hill, NC, USA
| | - Junnan Tang
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, 1060 William Moore Drive, RB306, Raleigh, NC 27607, NC, USA.,Department of Cardiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Tyler A Allen
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, 1060 William Moore Drive, RB306, Raleigh, NC 27607, NC, USA
| | - Thomas G Caranasos
- Divisions of Cardiothoracic Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kenneth B Adler
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, 1060 William Moore Drive, RB306, Raleigh, NC 27607, NC, USA
| | - Leonard J Lobo
- Pulmonary Diseases and Critical Care Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ke Cheng
- Department of Molecular Biomedical Sciences and Comparative Medicine Institute, North Carolina State University, 1060 William Moore Drive, RB306, Raleigh, NC 27607, NC, USA. .,Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh/Chapel Hill, NC, USA.
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7
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Bilgimol JC, Ragupathi S, Vengadassalapathy L, Senthil NS, Selvakumar K, Ganesan M, Manjunath SR. Stem cells: An eventual treatment option for heart diseases. World J Stem Cells 2015; 7:1118-1126. [PMID: 26435771 PMCID: PMC4591785 DOI: 10.4252/wjsc.v7.i8.1118] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 07/04/2015] [Accepted: 08/03/2015] [Indexed: 02/06/2023] Open
Abstract
Stem cells are of global excitement for various diseases including heart diseases. It is worth to understand the mechanism or role of stem cells in the treatment of heart failure. Bone marrow derived stem cells are commonly practiced with an aim to improve the function of the heart. The majority of studies have been conducted with acute myocardial infarction and a few has been investigated with the use of stem cells for treating chronic or dilated cardiomyopathy. Heterogeneity in the treated group using stem cells has greatly emerged. Ever increasing demand for any alternative made is of at most priority for cardiomyopathy. Stem cells are of top priority with the current impact that has generated among physicians. However, meticulous selection of proper source is required since redundancy is clearly evident with the present survey. This review focuses on the methods adopted using stem cells for heart diseases and outcomes that are generated so far with an idea to determine the best therapeutic possibility in order to fulfill the present demand.
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8
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Bi L, Wang G, Yang D, Li S, Liang B, Han Z. Effects of autologous bone marrow-derived stem cell mobilization on acute tubular necrosis and cell apoptosis in rats. Exp Ther Med 2015; 10:851-856. [PMID: 26622404 DOI: 10.3892/etm.2015.2592] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Accepted: 12/01/2014] [Indexed: 01/14/2023] Open
Abstract
The aim of this study was to investigate the effects of stem cell factor (SCF) and granulocyte colony-stimulating factor (G-CSF) on bone marrow-derived stem cell (BMSC) mobilization in rat models of renal ischemia/reperfusion (I/R) injury. In addition, the effects of SCF and G-CSF on cellular apoptosis were explored in order to determine the protective mechanism of the two factors against renal I/R injury. A unilateral renal I/R injury model was established for the model and treatment groups. The treatment and treatment control groups were subcutaneously injected with SCF (200 µg/kg/day) and G-CSF (50 µg/kg/day) 24 h after the establishment of the model for five consecutive days. The total number of leukocytes in the peripheral blood and the cellular percentages of cluster of differentiation (CD)34+, renal CD34+ and apoptotic cells were detected. The total number of leukocytes in the peripheral blood and the percentages of CD34+ cells in the treatment and treatment control groups reached maximum levels on the fifth postoperative day and were significantly higher than those in the normal control and model groups. The number of renal CD34+ cells in the treatment group was significantly increased compared with that in the treatment control and model groups. The apoptotic indices (AIs) of the model and treatment groups were higher than those of the normal control and treatment control groups. The AI of the model group was significantly higher than that of the treatment group. In conclusion, the combined application of SCF and G-CSF can mobilize sufficient numbers of BMSCs and cause cellular 'homing' to the injured site, thus inhibiting apoptosis and promoting the repair of renal tubular injury.
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Affiliation(s)
- Lingyun Bi
- Department of Pediatrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Guohong Wang
- Laboratory of Physiology, Xinxiang Medical University, Xinxiang, Henan 453000, P.R. China
| | - Dasheng Yang
- Department of Pediatrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Shujun Li
- Department of Pediatrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Bin Liang
- Department of Pediatrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
| | - Ziming Han
- Department of Pediatrics, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Henan 453100, P.R. China
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Ailawadi S, Wang X, Gu H, Fan GC. Pathologic function and therapeutic potential of exosomes in cardiovascular disease. Biochim Biophys Acta Mol Basis Dis 2014; 1852:1-11. [PMID: 25463630 DOI: 10.1016/j.bbadis.2014.10.008] [Citation(s) in RCA: 192] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/06/2014] [Accepted: 10/09/2014] [Indexed: 02/06/2023]
Abstract
The heart is a very complex conglomeration of organized interactions between various different cell types that all aid in facilitating myocardial function through contractility, sufficient perfusion, and cell-to-cell reception. In order to make sure that all features of the heart work effectively, it is imperative to have a well-controlled communication system among the different types of cells. One of the most important ways that the heart regulates itself is by the use of extracellular vesicles, more specifically, exosomes. Exosomes are types of nano-vesicles, naturally released from living cells. They are believed to play a critical role in intercellular communication through the means of certain mechanisms including direct cell-to-cell contact, long-range signals as well as electrical and extracellular chemical molecules. Exosomes contain many unique features like surface proteins/receptors, lipids, mRNAs, microRNAs, transcription factors and other proteins. Recent studies indicate that the exosomal contents are highly regulated by various stress and disease conditions, in turn reflective of the parent cell status. At present, exosomes are well appreciated to be involved in the process of tumor and infection disease. However, the research on cardiac exosomes is just emerging. In this review, we summarize recent findings on the pathologic effects of exosomes on cardiac remodeling under stress and disease conditions, including cardiac hypertrophy, peripartum cardiomyopathy, diabetic cardiomyopathy and sepsis-induced cardiovascular dysfunction. In addition, the cardio-protective effects of stress-preconditioned exosomes and stem cell-derived exosomes are also summarized. Finally, we discuss how to epigenetically reprogram exosome contents in host cells which makes them beneficial for the heart.
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Affiliation(s)
- Shaina Ailawadi
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Xiaohong Wang
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Haitao Gu
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Cell Biophysics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
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10
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Abnormalities of erythropoiesis during HIV-1 disease: a longitudinal analysis. J Acquir Immune Defic Syndr 2009; 52:70-4. [PMID: 19574926 DOI: 10.1097/qai.0b013e3181af65c5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Impaired erythropoiesis is a key abnormality described in untreated HIV-1 disease. Most of the available data on HIV-associated hematopoietic abnormalities were obtained using unfractionated bone marrow-derived mononuclear cells, thus resulting in significant inter (and intra)-individual variability in the number of cultured precursors. Aim of this study was to assess the erythropoietic capability of purified CD34+ progenitors through a longitudinal analysis of burst-forming units-erythroid (BFU-E) growth before and after antiretroviral therapy (ART). METHODS Twelve HIV-infected individuals were studied before and after ART; 31 HIV-uninfected individuals were enrolled as controls. CD34+ progenitors were purified from peripheral blood by immunomagnetic sorting and cultured in methylcellulose-based medium containing stem cell factor, granulocyte-monocyte colony-stimulating factor, interleukin-3, and erythropoietin. Serum levels of iron, transferrin, transferrin saturation index, soluble transferrin receptor, ferritin, and erythropoietin were also evaluated. RESULTS Baseline BFU-E levels were increased in untreated HIV-infected individuals when compared with controls but declined significantly after successful ART. In contrast, serum levels of erythropoietin and soluble transferrin receptor increased significantly after ART. CONCLUSIONS These findings suggest that, in untreated HIV-infected individuals, chronic inflammation and/or immune activation is associated with defective erythropoiesis and accumulation of erythroid precursors. ART-induced suppression of HIV-1 replication is associated with normalization of BFU-E levels.
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Abstract
Hematopoietic, stromal and organ-specific stem cells are under evaluation for therapeutic efficacy in cell-based therapies of cardiac, neurological and other disorders. It is critically important to track the location of directly transplanted or infused cells that can serve as gene carrier/delivery vehicles for the treatment of disease processes and be able to noninvasively monitor the temporal and spatial homing of these cells to target tissues. Moreover, it is also necessary to determine their engraftment efficiency and functional capability following transplantation. There are various in vivo imaging modalities used to track the movement and incorporation of administered cells. Tagging stem cells with different contrast agents can make these cells probes for different imaging modalities. Recent reports have shown that stem cells labeled with iron oxides can be used as cellular MRI probes demonstrating the cell trafficking to target tissues. In this review, we will discuss the status and future prospect of stem cell tracking by cellular MRI for cell-based therapy.
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Affiliation(s)
- Ali S Arbab
- Henry Ford Hospital, Cellular & Molecular Imaging Laboratory,Department of Radiology, 1 Ford Place, 2F Detroit, MI 48202, USA.
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12
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Yamashita M, Hirano S, Kanemaru SI, Tsuji S, Suehiro A, Ito J. Side population cells in the human vocal fold. Ann Otol Rhinol Laryngol 2008; 116:847-52. [PMID: 18074671 DOI: 10.1177/000348940711601110] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES The regenerative processes of the vocal fold, or the existence of stem cells in the folds, are unknown. Side population (SP) cells are defined as cells that have the ability to exclude the DNA binding dye, Hoechst 33342. They are regarded as a cell population enriched with stem cells and can be isolated from non-SP cells by a fluorescence-activated cell sorter. This study was designed to determine whether SP cells exist in the human vocal fold, as a first step in elucidating the regenerative mechanisms of the vocal fold. METHODS Seven human excised larynges were used in this study. Two were used for fluorescence-activated cell sorter analysis, and 5 were subjected to immunohistochemical analysis with antibodies against an adenosine triphosphate binding cassette transporter family member, ABCG2, which is expressed in SP cells. RESULTS The number of SP cells in the human vocal fold was about 0.2% of the total number of cells. ABCG2-positive cells were identified in both the epithelium and subepithelial tissue throughout the entire vocal fold. CONCLUSIONS This preliminary study demonstrated the existence of SP cells in the human vocal fold. Further studies are warranted to clarify how these cells work in the vocal fold, particularly in the regenerative process.
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Affiliation(s)
- Masaru Yamashita
- Division of Otolaryngology-Head and Neck Surgery, Dept of Surgery, University of Wisconsin-Madison, K4/723 Clinical Science Center, 600 Highland Ave, Madison, WI 53792, USA
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Matsunuma H, Kagami H, Narita Y, Hata KI, Ono Y, Ohshima S, Ueda M. Constructing a Tissue-Engineered Ureter Using a Decellularized Matrix with Cultured Uroepithelial Cells and Bone Marrow-Derived Mononuclear Cells. ACTA ACUST UNITED AC 2006; 12:509-18. [PMID: 16579684 DOI: 10.1089/ten.2006.12.509] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This study investigated the efficacy of the ureteral decellularized matrix (UDM) as a scaffold material for a tissue-engineered ureter, and the effect of bone marrow-derived mononuclear cells (BM-MNC) on the neovascularization of the scaffold. Canine ureters were treated with deoxycholic acid to remove all cells. Uroepithelial cells (UEC) were obtained from canine bladders, cultured, and then seeded onto the inner surface of the UDM before transplantation into the subcutaneous space of nude mice or the omentum of nude rats. The cultured UECs began showing vacuolar degeneration 3 days after transplantation and gradually disappeared thereafter. To facilitate neovascularization in the implant, BM-MNCs were seeded around the UDM before transplantation. This facilitated the survival of the UECs, which formed three to five cellular layers after 14 days. The mean microvessel density was significantly increased in tissues seeded with BM-MNCs. However, cell-tracking experiments revealed that the increased number of capillaries in the experimental group was not due to the direct differentiation of transplanted endothelial progenitor cells. Our results demonstrate that the UDM is a useful scaffold for a tissue-engineered ureter, especially when seeded with BM-MNCs to enhance angiogenesis.
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Affiliation(s)
- Hiroshi Matsunuma
- Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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14
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Abstract
In the developing embryo, the hemangioblast, a mesodermal precursor, gives rise to hematopoietic and endothelial cells. Recent work has shown that during postnatal life, a subset of hematopoietic progenitor cells also displays this dual differentiation capacity and can function as endothelial progenitor cells that contribute to neovascularization. Thus, this subset might be useful for therapy of various hematopoietic and vascular diseases. Here, we describe a two-step culture system that results in the generation of endothelial and hematopoietic cells from adult progenitor cells with hemangioblastic potential. We have developed growth conditions that allow retroviral gene marking of the adult hemangioblast. This culture system is amenable for single-cell analyses at distinct stages of endothelial and hematopoietic differentiation from mobilized CD133+ progenitor cells.
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Affiliation(s)
- Ursula M Gehling
- Department of Medicine, University Hospital Hamburg-Eppendorf, Hamburg, Germany
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