1
|
Ying C, Wang R, Wang Z, Tao J, Yin W, Zhang J, Yi C, Qi X, Han D. BMSC-Exosomes Carry Mutant HIF-1α for Improving Angiogenesis and Osteogenesis in Critical-Sized Calvarial Defects. Front Bioeng Biotechnol 2020; 8:565561. [PMID: 33330411 PMCID: PMC7710518 DOI: 10.3389/fbioe.2020.565561] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 10/28/2020] [Indexed: 12/13/2022] Open
Abstract
Repair and reconstruction of critical-sized bone defects has always been a difficult task in orthopedics. Hypoxia inducible factor-1α (HIF-1α) plays an important role in bone defect repair, it has the dual function of promoting osteogenesis and vascular regeneration, but it is quickly degraded by the body under normoxic conditions. Previously we prepared mutant HIF-1α, which has been shown to efficiently maintain cellular expression under normoxic conditions. In this study, we evaluated for the first time the role of exosomes of rat bone marrow mesenchymal stem cell carry mutant HIF-1α (BMSC-Exos-HIF1α) in repairing critical-sized bone defects. Evaluation of the effects of BMSC-Exos-HIF1α on bone marrow mesenchymal stem cells (BMSCs) proliferation and osteogenic differentiation by cell proliferation assay, alkaline phosphatase activity assay, alizarin red staining, real-time quantitative polymerase chain reaction. BMSC-Exos-HIF1α was loaded onto the β-TCP stent implanted in the bone defect area using a rat cranial critical-sized bone defect model, and new bone formation and neovascularization were detected in vivo by micro-CT, fluorescence labeling analysis, Microfil perfusion, histology and immunohistochemical analysis. In vitro results showed that BMSC-Exos-HIF1α stimulated the proliferation of BMSCs and up-regulated the expression level of bone-related genes, which was superior to bone marrow MSC exosomes (BMSC-Exos). In vivo results showed that BMSC-Exos-HIF1α combined with β-TCP scaffold promoted new bone regeneration and neovascularization in the bone defect area, and the effect was better than that of BMSC-Exos combined with β-TCP scaffold. In this study, the results showed that BMSC-Exos-HIF1α stimulated the proliferation and osteogenic differentiation of BMSCs and that BMSC-Exos-HIF1α combined with β-TCP scaffolds could repair critical-sized bone defects by promoting new bone regeneration and neovascularization.
Collapse
Affiliation(s)
- Chenting Ying
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rui Wang
- Department of Critical Care Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenlin Wang
- Department of Neurosurgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Tao
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenjing Yin
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Jieyuan Zhang
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Chengqing Yi
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Qi
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dan Han
- Department of Emergency Medicine and Intensive Care, Shanghai Songjiang Clinical Medical College of Nanjing Medical University, Shanghai, China
| |
Collapse
|
2
|
Song B, Zhang Q, Yu M, Qi X, Wang G, Xiao L, Yi Q, Jin W. Ursolic acid sensitizes radioresistant NSCLC cells expressing HIF-1α through reducing endogenous GSH and inhibiting HIF-1α. Oncol Lett 2016; 13:754-762. [PMID: 28356955 PMCID: PMC5351155 DOI: 10.3892/ol.2016.5468] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 10/26/2016] [Indexed: 12/25/2022] Open
Abstract
In previous studies, the present authors demonstrated that effective sensitization of ionizing radiation-induced death of tumor cells, including non-small cell lung cancer (NSCLC) cells, could be produced by oleanolic acid (OA), a pentacyclic triterpenoid present in plants. In the present study, it was investigated whether ursolic acid (UA), an isomer of OA, had also the capacity of sensitizing radioresistant NSCLC cells. The radioresistant cell line H1299/M-hypoxia inducible factor-1α (HIF-1α) was established by transfection with a recombinant plasmid expressing mutant HIF-1α (M-HIF-1α). Compared with parental H1299 cells and H1299 cells transfected with empty plasmid, H1299/M-HIF-1α cells had lower radiosensitivity. Following the use of UA to treat NSCLC cells, elevation of the radiosensitivity of cells was observed by MTT assay. The irradiated H1299/M-HIF-1α cells were more sensitive to UA pretreatment than the irradiated cells with empty plasmid and control. The alteration of DNA damage in the irradiated cells was further measured using micronucleus (MN) assay. The combination of UA treatment with radiation could induce the increase of cellular MN frequencies, in agreement with the change in the tendency observed in the cell viability assay. It was further shown that the endogenous glutathione (GSH) contents were markedly attenuated in the differently irradiated NSCLC cells with UA (80 µmol/l) pretreatment through glutathione reductase/5,5'-dithiobis-(2-nitrob-enzoic acid) (DTNB) recycling assay. The results revealed that UA treatment alone could effectively decrease the GSH content in H1299/M-HIF-1α cells. In addition, the inhibition of HIF-1α expression in radioresistant cells was confirmed by western blotting. It was then concluded that UA could upregulate the radiosensitivity of NSCLC cells, and in particular reduce the refractory response of cells expressing HIF-1α to ionizing radiation. The primary mechanism is associated with reduction of endogenous GSH and inhibition of high expression of intracellular HIF-1α. UA should therefore be deeply studied as a potential radiosensitizing reagent for NSCLC radiotherapy.
Collapse
Affiliation(s)
- Bing Song
- Department of Cardiology, First Affiliated Hospital, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Qian Zhang
- Teaching and Research Section of Nuclear Medicine, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Maohu Yu
- Teaching and Research Section of Nuclear Medicine, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Xinrong Qi
- Teaching and Research Section of Nuclear Medicine, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Gang Wang
- Teaching and Research Section of Nuclear Medicine, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Linlin Xiao
- Teaching and Research Section of Nuclear Medicine, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Qiyi Yi
- Teaching and Research Section of Nuclear Medicine, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Wensen Jin
- Teaching and Research Section of Nuclear Medicine, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| |
Collapse
|
3
|
Du M, Huang K, Huang D, Yang L, Gao L, Wang X, Huang D, Li X, Wang C, Zhang F, Wang Y, Cheng M, Tong Q, Qin G, Huang K, Wang L. Renalase is a novel target gene of hypoxia-inducible factor-1 in protection against cardiac ischaemia–reperfusion injury. Cardiovasc Res 2014; 105:182-91. [DOI: 10.1093/cvr/cvu255] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
|
4
|
GONG GU, HU LING, LIU YINGHAI, BAI SHURONG, DAI XUEMEI, YIN LIANG, SUN YANGYANG, WANG XIAOWU, HOU LICHAO. Upregulation of HIF-1α protein induces mitochondrial autophagy in primary cortical cell cultures through the inhibition of the mTOR pathway. Int J Mol Med 2014; 34:1133-40. [DOI: 10.3892/ijmm.2014.1850] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 06/26/2014] [Indexed: 11/06/2022] Open
|
5
|
Luo L, Luo G, Fang Q, Sun Z. Stable Expression of Hypoxia-Inducible Factor-1α in Human Renal Proximal Tubular Epithelial Cells Promotes Epithelial to Mesenchymal Transition. Transplant Proc 2014; 46:130-4. [DOI: 10.1016/j.transproceed.2013.06.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 06/28/2013] [Indexed: 10/25/2022]
|
6
|
Klinger P, Schietke RE, Warnecke C, Swoboda B, Wiesener M, Hennig FF, Gelse K. Deletion of the oxygen-dependent degradation domain results in impaired transcriptional activity of hypoxia-inducible factors. Transcription 2011; 2:269-75. [PMID: 22223045 DOI: 10.4161/trns.2.6.18619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Hypoxia-inducible factors (HIF1α/HIF2α) are key transcription factors that promote angiogenesis. The overexpression of degradation-resistant HIF mutants is considered a promising pro-angiogenic therapeutic tool. We compared the transcriptional activity of HIF1α/HIF2α mutants that obtained their resistance to oxygen-dependent degradation either by deletion of their entire oxygen-dependent degradation (ODD) domain or by replacement of prolyl residues that are crucial for oxygen-dependent degradation. Although all HIF mutants translocated into the nucleus, HIF1α and HIF2α mutants inclosing the point mutations were significantly more effective in trans-activating the target gene VEGF and in inducing tube formation of endothelial cells than mutants lacking the complete ODD domain.
Collapse
Affiliation(s)
- Patricia Klinger
- Department of Orthopaedic Trauma Surgery, University Hospital Erlangen, Erlangen, Germany
| | | | | | | | | | | | | |
Collapse
|
7
|
Luo L, Lu J, Wei L, Long D, Guo JY, Shan J, Li FS, Lu PY, Li PY, Feng L. The role of HIF-1 in up-regulating MICA expression on human renal proximal tubular epithelial cells during hypoxia/reoxygenation. BMC Cell Biol 2010; 11:91. [PMID: 21092233 PMCID: PMC3000391 DOI: 10.1186/1471-2121-11-91] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Accepted: 11/23/2010] [Indexed: 11/24/2022] Open
Abstract
Background Human major histocompatibility complex class I-related chain A (MICA) plays a dual role in adaptive and innate immune responses. Increasing evidence demonstrates that MICA is closely correlated with acute and chronic kidney allograft rejection. Therefore, understanding the activation mechanisms of MICA is important in kidney transplantation. We previously demonstrated that ischemia/reperfusion injury (IRI) could up-regulate MICA expression on mouse kidney allografts. Since hypoxia-inducible factor-1 (HIF-1) is the master regulator of cellular adaptive responses to hypoxia during IRI, here we investigate whether HIF-1 could up-regulate MICA expression and its influence on NK cell cytotoxicity. Results We find that HIF-1alpha plays an important role in up-regulating MICA expression, inducing IFNgamma secretion and NK cell cytotoxicity during hypoxia/reoxygenation. First, we generated a HIF-1alphaDELTAODD-expressing adenovirus to stably and functionally express HIF-1alpha in human renal proximal tubular epithelial (HK-2) cells under normoxia conditions. HIF-1alpha over-expression in HK-2 cells induces MICA expression and enhances NK cell cytotoxic activity towards cells that express HIF-1alpha. Second, we used a hypoxia/reoxygenation cell model to simulate IRI in vitro and found that the suppression of HIF-1alpha by RNAi induces down-regulation of MICA expression and inhibits NK cytotoxicity. In antibody blocking experiments, an anti-MICA mAb was able to down-regulate NK cell cytotoxic activity towards HK-2 cells that over-expressed HIF-1alpha. Moreover, when NK cells were co-cultured with the HK-2 cells expressing MICA, which was up-regulated by over-expression of HIF-1alpha, there was a significant increase in the secretion of IFNgamma. In the presence of the blocking MICA mAb, IFNgamma secretion was significantly decreased. Conclusions These results demonstrate that hypoxia/reoxygenation-promoted MICA expression on HK-2 cells is through a HIF-1 pathway. The increased IFNgamma secretion and enhanced NK cell cytotoxicity was mainly due to the surface expression of MICA induced by over-expression of HIF-1alpha. This study enhances our understanding of MICA activation mechanisms during kidney transplantation and provides insights into how IRI can influence transplant outcome. Moreover, these findings might be also important for developing strategies to reduce the effect of MICA in kidney transplant outcomes in the future.
Collapse
Affiliation(s)
- Lei Luo
- Key Laboratory of Transplant Engineering and Immunology of Health Ministry of China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
HIF-1α accumulation upregulates MICA and MICB expression on human cardiomyocytes and enhances NK cell cytotoxicity during hypoxia-reoxygenation. Life Sci 2010; 87:111-9. [DOI: 10.1016/j.lfs.2010.05.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2009] [Revised: 05/11/2010] [Accepted: 05/20/2010] [Indexed: 01/28/2023]
|