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Wu L, Niu L, Yang Z, Xia Q, Xu J, Lu X. RNA N6‑methyladenosine methyltransferase WTAP promotes the differentiation of endothelial progenitor cells. Exp Ther Med 2023; 26:420. [PMID: 37602313 PMCID: PMC10433437 DOI: 10.3892/etm.2023.12119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 06/23/2023] [Indexed: 08/22/2023] Open
Abstract
N6-methyladenosine (m6A) serves a critical role in regulating gene expression and has been associated with various diseases; however, its role in the differentiation of endothelial progenitor cells (EPCs) remains unclear. The present study used liquid chromatography with tandem mass spectrometry and immunofluorescence assays to quantify the levels of m6A in human peripheral blood-derived EPCs (HPB-EPCs) before and after differentiation into mature cells. The present study performed Cell Counting Kit 8, Transwell, and tube formation assays to determine the effects of overexpression and knockdown of Wilms' tumor 1-associated protein (WTAP) on HPB-EPCs. The results revealed that the level of m6A modification was significantly increased during HPB-EPCs differentiation, and WTAP exhibited the most significant alteration among the enzymes involved in m6A regulation. When WTAP was overexpressed in HPB-EPCs, cell proliferation, invasion, and the formation of tubes were improved, whereas WTAP knockdown yielded the opposite effects. In conclusion, the present study highlighted the involvement of m6A in regulating EPC differentiation, with WTAP acting as a promoter of EPC differentiation.
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Affiliation(s)
- Longyun Wu
- Department of Gastroenterology, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Lili Niu
- Department of Gastroenterology, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
- Central Laboratory, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116021, P.R. China
- Institute of Integrative Medicine, Dalian Medical University, Dalian, Liaoning 116021, P.R. China
| | - Zhou Yang
- Department of Gastroenterology, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
- Department of Cardiovascular Surgery, Fudan University Shanghai Cancer Center, Shanghai 200120, P.R. China
| | - Qiaoyun Xia
- Department of Gastroenterology, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Jingyuan Xu
- Department of Gastroenterology, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xiaolan Lu
- Department of Gastroenterology, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
- Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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Chopra H, Han Y, Zhang C, Pow EHN. CD133 +CD34 + cells can give rise to EPCs: A comparative rabbit and human study. Blood Cells Mol Dis 2020; 86:102487. [PMID: 32920463 DOI: 10.1016/j.bcmd.2020.102487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 01/13/2023]
Affiliation(s)
- Hitesh Chopra
- Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Yuanyuan Han
- Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Chengfei Zhang
- Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
| | - Edmond Ho Nang Pow
- Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
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Tasev D, Koolwijk P, van Hinsbergh VWM. Therapeutic Potential of Human-Derived Endothelial Colony-Forming Cells in Animal Models. TISSUE ENGINEERING PART B-REVIEWS 2016; 22:371-382. [PMID: 27032435 DOI: 10.1089/ten.teb.2016.0050] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE OF REVIEW Tissue regeneration requires proper vascularization. In vivo studies identified that the endothelial colony-forming cells (ECFCs), a subtype of endothelial progenitor cells that can be isolated from umbilical cord or peripheral blood, represent a promising cell source for therapeutic neovascularization. ECFCs not only are able to initiate and facilitate neovascularization in diseased tissue but also can, by acting in a paracrine manner, contribute to the creation of favorable conditions for efficient and appropriate differentiation of tissue-resident stem or progenitor cells. This review outlines the progress in the field of in vivo regenerative and tissue engineering studies and surveys why, when, and how ECFCs can be used for tissue regeneration. RECENT FINDINGS Reviewed literature that regard human-derived ECFCs in xenogeneic animal models implicates that ECFCs should be considered as an endothelial cell source of preference for induction of neovascularization. Their neovascularization and regenerative potential is augmented in combination with other types of stem or progenitor cells. Biocompatible scaffolds prevascularized with ECFCs interconnect faster and better with the host vasculature. The physical incorporation of ECFCs in newly formed blood vessels grants prolonged release of trophic factors of interest, which also makes ECFCs an interesting cell source candidate for gene therapy and delivery of bioactive compounds in targeted area. SUMMARY ECFCs possess all biological features to be considered as a cell source of preference for tissue engineering and repair of blood supply. Investigation of regenerative potential of ECFCs in autologous settings in large animal models before clinical application is the next step to clearly outline the most efficient strategy for using ECFCs as treatment.
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Affiliation(s)
- Dimitar Tasev
- 1 Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center Amsterdam , Amsterdam, The Netherlands .,2 A-Skin Nederland BV , Amsterdam, The Netherlands
| | - Pieter Koolwijk
- 1 Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center Amsterdam , Amsterdam, The Netherlands
| | - Victor W M van Hinsbergh
- 1 Department of Physiology, Institute for Cardiovascular Research, VU University Medical Center Amsterdam , Amsterdam, The Netherlands
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Barthelmes D, Zhu L, Shen W, Gillies MC, Irhimeh MR. Differential gene expression in Lin-/VEGF-R2+ bone marrow-derived endothelial progenitor cells isolated from diabetic mice. Cardiovasc Diabetol 2014; 13:42. [PMID: 24521356 PMCID: PMC3926942 DOI: 10.1186/1475-2840-13-42] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 02/03/2014] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Diabetes is known to impair the number and function of endothelial progenitor cells in the circulation, causing structural and functional alterations in the micro- and macro-vasculature. The aim of this study was to identify early diabetes-related changes in the expression of genes that have been reported to be closely involved in endothelial progenitor cell migration and function. METHODS Based on review of current literature, this study examined the expression level of 35 genes that are known to be involved in endothelial progenitor cell migration and function in magnetically sorted Lin-/VEGF-R2+ endothelial progenitor cells obtained from the bone marrow of Akita mice in the early stages of diabetes (18 weeks) using RT-PCR and Western blotting. We used the Shapiro-Wilk and D'Agostino & Pearson Omnibus tests to assess normality. Differences between groups were evaluated by Student's t-test for normally distributed data (including Welch correction in cases of unequal variances) or Mann-Whitney test for not normally distributed data. RESULTS We observed a significant increase in the number of Lin-/VEGF-R2+ endothelial progenitor cells within the bone marrow in diabetic mice compared with non-diabetic mice. Two genes, SDF-1 and SELE, were significantly differentially expressed in diabetic Lin-/VEGF-R2+ endothelial progenitor cells and six other genes, CAV1, eNOS, CLDN5, NANOG, OCLN and BDNF, showed very low levels of expression in diabetic Lin-/VEGF-R2+ progenitor cells. CONCLUSION Low SDF-1 expression may contribute to the dysfunctional mobilization of bone marrow Lin-/VEGF-R2+ endothelial progenitor cells, which may contribute to microvascular injury in early diabetes.
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Affiliation(s)
| | | | | | | | - Mohammad R Irhimeh
- Save Sight Institute, Level 1, South Block Sydney Hospital and Sydney Eye Hospital, Central Clinical School, The University of Sydney, 8 Macquarie Street, Sydney, NSW 2000, Australia.
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Lavergne M, Vanneaux V, Delmau C, Gluckman E, Rodde-Astier I, Larghero J, Uzan G. Cord blood-circulating endothelial progenitors for treatment of vascular diseases. Cell Prolif 2011; 44 Suppl 1:44-7. [PMID: 21481043 DOI: 10.1111/j.1365-2184.2010.00722.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Adult peripheral blood (PB) endothelial progenitor cells (EPC) are produced in the bone marrow and are able to integrate vascular structures in sites of neoangiogenesis. EPCs thus represent a potential therapeutic tool for ischaemic diseases. However, use of autologous EPCs in cell therapy is limited by their rarity in adult PB. Cord blood (CB) contains more EPCs than PB, and they are functional after expansion. They form primary colonies that give rise to secondary colonies, each yielding more than 10(7) cells after few passages. The number of endothelial cells obtained from one unit of CB is compatible with potential clinical application. EPC colonies can be securely produced, expanded and cryopreserved in close culture devices and endothelial cells produced in these conditions are functional as shown in different in vitro and in vivo assays. As CB EPC-derived endothelial cells would be allogeneic to patients, it would be of interest to prepare them from ready-existing CB banks. We show that not all frozen CB units from a CB bank are able to generate EPC colonies in culture, and when they do so, number of colonies is lower than that obtained with fresh CB units. However, endothelial cells derived from frozen CB have the same phenotypical and functional properties than those derived from fresh CB. This indicates that CB cryopreservation should be improved to preserve integrity of stem cells other than haematopoietic ones. Feasibility of using CB for clinical applications will be validated in porcine models of ischaemia.
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Zhang X, Xu Y, Thomas V, Bellis SL, Vohra YK. Engineering an antiplatelet adhesion layer on an electrospun scaffold using porcine endothelial progenitor cells. J Biomed Mater Res A 2011; 97:145-51. [PMID: 21370444 DOI: 10.1002/jbm.a.33040] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2010] [Revised: 12/14/2010] [Accepted: 01/06/2010] [Indexed: 01/03/2023]
Abstract
In coronary artery bypass graft interventions, luminal thrombosis is one of the greatest challenges for polymeric grafts with a luminal diameter less than 4 mm. Previously, we reported the fabrication of a highly porous micro/nanofibrous electrospun scaffold and demonstrated the excellent biocompatibility of the scaffolding materials with human endothelial cells. In this study, we explored the engineering of an antithrombotic layer on the scaffold's lumen within 48 h, using peripheral blood-derived porcine endothelial progentior cells (EPC). Flow cytometric results showed that they were CD31(-) but highly CD34(+) and CD105(+) , suggesting the primitive nature of these freshly isolated EPC. The vast majority of EPC readily took up low density lipoprotein, confirming their endothelial phenotype. These EPC also exhibited a strong proliferation capacity on the scaffold for up to 11 days. A confluent layer could be easily engineered within 24 h, which successfully prevented platelet adhesion, a critical step in the cascade of thrombotic events. We concluded that this scaffold could afford a convenient means for the regeneration of a functional cardiovascular endothelium shortly after implantation. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part A:, 2011.
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Affiliation(s)
- Xing Zhang
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Induction of EPC homing on biofunctionalized vascular grafts for rapid in vivo self-endothelialization — A review of current strategies. Biotechnol Adv 2010; 28:119-29. [DOI: 10.1016/j.biotechadv.2009.10.005] [Citation(s) in RCA: 161] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 10/14/2009] [Accepted: 10/19/2009] [Indexed: 12/20/2022]
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Ranjan AK, Kumar U, Hardikar AA, Poddar P, Nair PD, Hardikar AA. Human blood vessel-derived endothelial progenitors for endothelialization of small diameter vascular prosthesis. PLoS One 2009; 4:e7718. [PMID: 19890388 PMCID: PMC2766657 DOI: 10.1371/journal.pone.0007718] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2009] [Accepted: 10/10/2009] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Coronary bypass graft failure as a result of acute thrombosis and intimal hyperplasia has been the major challenge in surgical procedures involving small-diameter vascular prosthesis. Coating synthetic grafts with patients' own endothelial cells has been suggested to improve the patency rate and overall success of bypass surgeries. METHODOLOGY/PRINCIPAL FINDINGS We isolated endothelial progenitor cells (EPCs) from leftover pieces of human saphenous vein/mammary artery. We demonstrate that EPCs can be expanded to generate millions of cells under low-density culture conditions. Exposure to high-density conditions induces differentiation to endothelial cell phenotype. EPC-derived endothelial cells show expression of CD144high, CD31, and vWF. We then assessed the ability of differentiated endothelial cells to adhere and grow on small diameter expanded polytetrafluoroethylene (ePTFE) tubings. Since ePTFE tubings are highly hydrophobic, we optimized protocols to introduce hydrophilic groups on luminal surface of ePTFE tubings. We demonstrate here a stepwise protocol that involves introduction of hydrophilic moieties and coating with defined ECM components that support adhesion of endothelial cells, but not of blood platelets. CONCLUSION/SIGNIFICANCE Our data confirms that endothelial progenitors obtained from adult human blood vessels can be expanded in vitro under xenoprotein-free conditions, for potential use in endothelialization of small diameter ePTFE grafts. These endothelialized grafts may represent a promising treatment strategy for improving the clinical outcome of small-caliber vascular grafts in cardiac bypass surgeries.
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Affiliation(s)
- Amaresh K. Ranjan
- Stem Cells and Diabetes Section, National Center for Cell Science, Pune, India
| | - Umesh Kumar
- Materials Chemistry Division, National Chemical Laboratory, Pune, India
| | | | - Pankaj Poddar
- Materials Chemistry Division, National Chemical Laboratory, Pune, India
| | - Prabha D. Nair
- Division of Tissue Engineering and regeneration Technologies, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
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