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Gao W, Yang X, Du J, Wang H, Zhong H, Jiang J, Yang C. Glucocorticoid guides mobilization of bone marrow stem/progenitor cells via FPR and CXCR4 coupling. Stem Cell Res Ther 2021; 12:16. [PMID: 33413641 PMCID: PMC7791823 DOI: 10.1186/s13287-020-02071-1] [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] [Received: 04/28/2020] [Accepted: 12/06/2020] [Indexed: 12/04/2022] Open
Abstract
Background Our previous studies have proved the efficient exogenous repairing responses via bone marrow stem and progenitor cells (BMSPCs). However, the trafficking of endogenous bone marrow stem and progenitor cells to and from the bone marrow (BM) is a highly regulated process that remains to be elucidated. We aimed to study the relative importance of the hypothalamic-pituitary-adrenal (HPA) axis in the glucocorticoid-induced BMSPC mobilization. Methods The circulating mesenchymal stem cells (MSCs) and endothelial progenitor cells (EPCs) were examined in Crh (+/+, −/−) mice after running stress or glucocorticoid mini-infusion. The MSCs and EPCs were investigated ex vivo after treatment with glucocorticoid and glucocorticoid receptor (GR) antagonist, RU486. The expression of chemotaxis receptors, N-formyl peptide receptor (FPR), and Cys-X-Cys receptor 4 (CXCR4) of MSCs and EPCs as well as their colocalization were investigated after treatment with glucocorticoid, glucocorticoid receptor (GR) antagonist (RU486), and FPR antagonist (Cyclosporin H). Results Forced running stress increased circulating MSCs and EPCs in mice, which was blunted when Crh was knocked out, and positively related to the levels of serum glucocorticoid. Prolonged glucocorticoid mini-infusion imitated the stress-induced increase in circulating MSCs and EPCs in Crh+/+ mice and rescued the impaired mobilization in circulating MSCs and EPCs in Crh−/− mice. Meanwhile, glucocorticoid promoted the chemotaxis of MSCs and EPCs ex vivo via GR, inhibited by RU486 (10 μM). Concurrently, glucocorticoid increased the expression of FPR of MSCs and EPCs, but inhibited their expression of CXCR4, followed by their changing colocalization in the cytoplasm. The GC-induced colocalization of FPR and CXCR4 was blunted by Cyclosporin H (1 μM). Conclusion Glucocorticoid-induced CXCR4-FPR responsiveness selectively guides the mobilization of BMSPCs, which is essential to functional tissue repair. Graphical abstract Schematic view of the role of glucocorticoid on the mobilization of bone marrow-derived stem/progenitor cells subsets in the present study. The HPA axis activation promotes the release of glucocorticoid, which regulates the directional migration of MSCs and EPCs mainly via GR. The possible mechanisms refer to the signal coupling of FPR and CXCR4. Their two-sided changes regulated by glucocorticoid are involved in the egress of MSCs and EPCs from BM, which is helpful for wound healing. MSCs, mesenchymal stem cells; EPCs, endothelial progenitor cells.
![]() Supplementary Information The online version contains supplementary material available at 10.1186/s13287-020-02071-1.
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Affiliation(s)
- Wenting Gao
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China.,Department of Cardiovascular Surgery, First Affiliated Hospital of Baotou Medical College, Baotou, 014000, Inner Mongolia, People's Republic of China
| | - Xuetao Yang
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China.,Chinese PLA 952th Hospital, Geermu, 816000, Qinghai, People's Republic of China
| | - Juan Du
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China
| | - Haiyan Wang
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China
| | - Hejiang Zhong
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China.,Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037, People's Republic of China
| | - Jianxin Jiang
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China.
| | - Ce Yang
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Third Military Medical University, Chongqing, 400042, People's Republic of China.
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Dato GA, Picichè M. Off-pump Techniques of Surgical Myocardial Revascularization. Rev Recent Clin Trials 2019; 14:116-119. [PMID: 30706790 DOI: 10.2174/1574887114666190201112053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 03/22/2018] [Accepted: 05/12/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Before the advent of CABG, standardized in the late '60s by Favaloro and Effler, patients with myocardial ischemia underwent indirect and heterogeneous off-pump methods of myocardial revascularization. METHODS & RESULTS Indirect revascularization, such as periaortic nerve plexus interruption, Vineberg operation, Sen procedure and, less remotely, TMR Laser and stem cell transplantation, represented some of the ways to achieve myocardial revascularization. Nowadays, direct coronary revascularization is the only established technique and may be performed either on-pump or off-pump. CONCLUSION The comparison of off-pump and on-pump myocardial revascularization paved the way to an endless debate between the advantages and disadvantages of each technique. In this article, we review the old and current off-pump approaches of surgical myocardial revascularization.
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Affiliation(s)
- Guglielmo Actis Dato
- Cardiac Surgery Department, Mauriziano Hospital, Largo Turati, 10131, Turin, Italy
| | - Marco Picichè
- Cardiac Surgery Department, Aulss8 Berica, San Bortolo Hospital, Via F. Rodolfi 37, 36100, Vicenza, Italy
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