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Suryawan IGR, Pikir BS, Rantam FA, Ratri AK, Nugraha RA. Hypoxic Preconditioning Promotes Survival of Human Adipose Derived Mesenchymal Stem Cell. F1000Res 2024; 10:843. [PMID: 38938689 PMCID: PMC11208860 DOI: 10.12688/f1000research.55351.3] [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: 07/11/2024] [Indexed: 06/29/2024] Open
Abstract
Background: Contributing factors for improved survival of human adipocytes mesenchymal stem cells (h-AMSCs) cultured through hypoxia preconditioning, in example apoptosis inhibition involving BCL2 and HSP27 expression, trigger signal expression (VEGF), SCF expression, OCT-4 expression, and CD44+ expression. The objective if this study was to explain the mechanism and role of hypoxic preconditioning and the optimal duration of hypoxic preconditioning exposure to improve survival of h-AMSCs. Methods: An experimental laboratory explorative study ( in vitro) with hypoxic preconditioning in h-AMSCs cultures. This research was conducted through four stages. First, isolation of h-AMSCs culture from adipose tissue of patients. Second, the characterization of h-AMSCs from adipose tissue by phenotype (flowcytometry) through CD44+, CD90+ and CD45-expression before being pre-conditioned for hypoxic treatment. Third, the hypoxic preconditioning in h-AMSCs culture ( in vitro) was performed with an oxygen concentration of 1% for 24, 48 and 72 hours. Fourth, observation of survival from h-AMSCs culture was tested on the role of CD44+, VEGF, SCF, OCT-4, BCL2, HSP27 with Flowcytometry and apoptotic inhibition by Tunnel Assay method. Results: The result of regression test showed that time difference had an effect on VEGF expression ( p<0.001; β=-0.482) and hypoxia condition also influenced VEGF expression ( p<0.001; β=0.774). The result of path analysis showed that SCF had effect on OCT-4 expression ( p<0.001; β=0.985). The regression test results showed that time effects on HSP27 expression ( p<0.001; β=0.398) and hypoxia precondition also affects HSP27 expression ( p<0.001; β=0.847). Pathway analysis showed that BCL2 expression inhibited apoptosis ( p=0.030; β=-0.442) and HSP27 expression also inhibited apoptosis ( p<0,001; β=-0.487). Conclusion: Hypoxic preconditioning of h-AMSC culture has proven to increase the expression of VEGF, SCF, OCT-4, and BCL2 and HSP27. This study demonstrated and explained the existence of a new mechanism of increased h-AMSC survival in cultures with hypoxic preconditioning (O2 1%) via VEGF, SCF, OCT-4, BCL2, and HSP 27.
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Affiliation(s)
- I Gde Rurus Suryawan
- Cardiology and Vascular Medicine, Universitas Airlangga, Surabaya, East Java, 60286, Indonesia
| | - Budi Susetyo Pikir
- Cardiology and Vascular Medicine, Universitas Airlangga, Surabaya, East Java, 60286, Indonesia
| | - Fedik Abdul Rantam
- Virology and Immunology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, East Java, 60286, Indonesia
| | - Anudya Kartika Ratri
- Cardiology and Vascular Medicine, Universitas Airlangga, Surabaya, East Java, 60286, Indonesia
| | - Ricardo Adrian Nugraha
- Cardiology and Vascular Medicine, Universitas Airlangga, Surabaya, East Java, 60286, Indonesia
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Haneef K, Salim A, Hashim Z, Ilyas A, Syed B, Ahmed A, Zarina S. Chemical Hypoxic Preconditioning Improves Survival and Proliferation of Mesenchymal Stem Cells. Appl Biochem Biotechnol 2024; 196:3719-3730. [PMID: 37755639 DOI: 10.1007/s12010-023-04743-z] [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] [Accepted: 09/15/2023] [Indexed: 09/28/2023]
Abstract
Increasing evidence has demonstrated that mesenchymal stem cells (MSCs) have been linked to tissue regeneration both in vitro and in vivo. However, poor engraftment and low survival rate of transplanted MSCs are still a major concern. It has been found that the proliferation, survival, and migration of MSCs are all increased by hypoxic preconditioning. However, the molecular mechanism through which hypoxic preconditioning enhances these beneficial properties of MSCs remains to be fully investigated. Therefore, the present study is aimed to investigate the mechanism by which hypoxic preconditioning enhances the survival of MSCs. We used proteomic analysis to explore the molecules that may contribute to the survival and proliferation of hypoxic preconditioned (HP) MSCs. The analysis revealed a higher expression of prelamin A/C (Lmna), glutamate dehydrogenase 1(Glud1), Actin, cytoplasmic 1(Actb), Alpha-enolase (Eno1), Glucose-6-phosphate 1-dehydrogenase (G6pd), Protein disulfide-isomerase A3 (Pdia3), Malate dehydrogenase (Mdh1), Peroxiredoxin-6 (Prdx6), Superoxide dismutase (Sod1), and Annexin A2 (Anxa2) in HP-MSCs. These proteins are possibly involved in cellular survival and proliferation through various cellular pathways. This research could aid in understanding the processes involved in hypoxic preconditioning of MSCs and designing of cell-based therapeutic strategies for tissue regeneration.
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Affiliation(s)
- Kanwal Haneef
- Dr. Zafar H. Zaidi Center for Proteomics, University of Karachi, Karachi, 75270, Pakistan.
| | - Asmat Salim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Zehra Hashim
- Dr. Zafar H. Zaidi Center for Proteomics, University of Karachi, Karachi, 75270, Pakistan
| | - Amber Ilyas
- Dr. Zafar H. Zaidi Center for Proteomics, University of Karachi, Karachi, 75270, Pakistan
| | - Basir Syed
- School of Pharmacy, Chapman University, Orange, CA, 92866, USA
| | - Aftab Ahmed
- School of Pharmacy, Chapman University, Orange, CA, 92866, USA
| | - Shamshad Zarina
- Dr. Zafar H. Zaidi Center for Proteomics, University of Karachi, Karachi, 75270, Pakistan
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Li S, Zhao C, Shang G, Xie JL, Cui L, Zhang Q, Huang J. α-ketoglutarate preconditioning extends the survival of engrafted adipose-derived mesenchymal stem cells to accelerate healing of burn wounds. Exp Cell Res 2024; 439:114095. [PMID: 38759745 DOI: 10.1016/j.yexcr.2024.114095] [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: 03/30/2024] [Revised: 05/09/2024] [Accepted: 05/13/2024] [Indexed: 05/19/2024]
Abstract
The application of adipose-derived stem cells (ADSCs) in treating hard-to-heal wounds has been widely accepted, while the short-term survival rate remains an obstacle in stem cell therapy. The aim of this study is to investigate the effect of preconditioning ADSCs with α-ketoglutarate (α-KG) on the healing of acid burn wounds and cell survival within wounds. Preconditioning of ADSCs was performed by treating cells at passage 3 with 3.5 mM DM-αKG for 24 h. Proliferation and migration of ADSCs was examined. An acid burn wound was created on the dorsal skin of mice. Cell suspension of ADSCs (2 × 106 cells/ml), either pre-treated with α-KG or not, was injected subcutaneously around the margin of wound. At 1,4,7,10,14 days after injection, the percentage of wound closure was evaluated. Expression of pro-angiogenic factors, matrix molecules and HIF1-α in pretreated ADSCs or in wounds was evaluated by qRT-PCR and immunohistochemistry staining, respectively. The survival rate of DiO-labelled ADSCs was determined with the in vivo bioluminescent imaging system. Treating with α-KG induced an enhancement in migration of ADSCs, while their proliferation was not affected. Expression of Vegf and Fgf-2 was significantly increased. With injection of pretreated ADSCs, healing of wounds was remarkably accelerated, along with increased ECM deposition and microvessel density. Moreover, pretreatment with α-KG resulted a prolonged survival of engrafted ADSCs was observed. Expression of HIF-1α was significantly increased in ADSCs treated with α-KG and in wounds injected with preconditioned ADSCs. Our results revealed that healing of acid burn wound was accelerated with administration of ADSCs pretreated with α-KG, which induced elevated expression of HIF-1α and prolonged survival of engrafted stem cells.
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Affiliation(s)
- Shuaijun Li
- Department of Reconstructive and Regenerative Surgery, Shanghai Tongji Hospital Tongji University School of Medicine, Shanghai, China; Department of Stem Cells and Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Cheng Zhao
- Department of Reconstructive and Regenerative Surgery, Shanghai Tongji Hospital Tongji University School of Medicine, Shanghai, China; Department of Stem Cells and Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Guoying Shang
- Department of Reconstructive and Regenerative Surgery, Shanghai Tongji Hospital Tongji University School of Medicine, Shanghai, China
| | - Jun-Ling Xie
- Research Center for Translational Medicine at East Hospital, School of Medicine, Tongji University, Shanghai 200010, China
| | - Lei Cui
- Department of Reconstructive and Regenerative Surgery, Shanghai Tongji Hospital Tongji University School of Medicine, Shanghai, China; Department of Stem Cells and Regenerative Medicine, Tongji University School of Medicine, Shanghai, China.
| | - Qun Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200011, China.
| | - Jiefeng Huang
- Department of Plastic Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
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Allemann MS, Lee P, Beer JH, Saeedi Saravi SS. Targeting the redox system for cardiovascular regeneration in aging. Aging Cell 2023; 22:e14020. [PMID: 37957823 PMCID: PMC10726899 DOI: 10.1111/acel.14020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 09/09/2023] [Accepted: 10/05/2023] [Indexed: 11/15/2023] Open
Abstract
Cardiovascular aging presents a formidable challenge, as the aging process can lead to reduced cardiac function and heightened susceptibility to cardiovascular diseases. Consequently, there is an escalating, unmet medical need for innovative and effective cardiovascular regeneration strategies aimed at restoring and rejuvenating aging cardiovascular tissues. Altered redox homeostasis and the accumulation of oxidative damage play a pivotal role in detrimental changes to stem cell function and cellular senescence, hampering regenerative capacity in aged cardiovascular system. A mounting body of evidence underscores the significance of targeting redox machinery to restore stem cell self-renewal and enhance their differentiation potential into youthful cardiovascular lineages. Hence, the redox machinery holds promise as a target for optimizing cardiovascular regenerative therapies. In this context, we delve into the current understanding of redox homeostasis in regulating stem cell function and reprogramming processes that impact the regenerative potential of the cardiovascular system. Furthermore, we offer insights into the recent translational and clinical implications of redox-targeting compounds aimed at enhancing current regenerative therapies for aging cardiovascular tissues.
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Affiliation(s)
- Meret Sarah Allemann
- Center for Molecular CardiologyUniversity of ZurichSchlierenSwitzerland
- Department of Internal MedicineCantonal Hospital BadenBadenSwitzerland
| | - Pratintip Lee
- Center for Molecular CardiologyUniversity of ZurichSchlierenSwitzerland
- Department of Internal MedicineCantonal Hospital BadenBadenSwitzerland
| | - Jürg H. Beer
- Center for Molecular CardiologyUniversity of ZurichSchlierenSwitzerland
- Department of Internal MedicineCantonal Hospital BadenBadenSwitzerland
| | - Seyed Soheil Saeedi Saravi
- Center for Translational and Experimental Cardiology, Department of CardiologyUniversity Hospital Zurich, University of ZurichSchlierenSwitzerland
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Ahmadi Somaghian S, Pajouhi N, Dezfoulian O, Pirnia A, Kaeidi A, Rasoulian B. The protective effects of hyperoxic pre-treatment in human-derived adipose tissue mesenchymal stem cells against in vitro oxidative stress and a rat model of renal ischaemia-reperfusion. Arch Physiol Biochem 2023:1-10. [PMID: 37506037 DOI: 10.1080/13813455.2023.2238918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/23/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023]
Abstract
Objective: Improvement of cell survival is essential for achieving better clinical outcomes in stem cell therapy. We investigated the effects of hyperoxic pre-treatment (HP) on the viability of human adipose stromal stem cells (ASCs).Materials and Methods: MTT and Western blot tests were used to assess cell viability and the expression of apoptosis-related proteins, respectively. For the in-vivo trial, the rats were subjected to renal ischaemia-reperfusion (IR).Results: The results showed that HP could significantly increase the viability of ASCs and decrease apoptotic markers (Bax/BCL-2 ratio and Caspase-3) compared with control cells. There were some additional effects with regard to the improvement of renal structure and function in the animal model. However, the difference between the treated and non-treated transplanted ASCs failed to reach significance.Conclusion: These results suggested that HP could increase the survival of ASCs against oxidative stress-induced damages in the in-vitro condition, but this strategy was not highly effective in renal IR.
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Affiliation(s)
- Shahram Ahmadi Somaghian
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Naser Pajouhi
- Department of Pathobiology, School of Veterinary Medicine, Lorestan University, Khorramabad, Iran
| | - Omid Dezfoulian
- Department of Pathobiology, School of Veterinary Medicine, Lorestan University, Khorramabad, Iran
| | - Afshin Pirnia
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Ayat Kaeidi
- Physiology-Pharmacology Research Center, Research Institute of Basic Medical Science, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Bahram Rasoulian
- Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
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Chae SA, Du M, Son JS, Zhu MJ. Exercise improves homeostasis of the intestinal epithelium by activation of apelin receptor-AMP-activated protein kinase signalling. J Physiol 2023; 601:2371-2389. [PMID: 37154385 PMCID: PMC10280693 DOI: 10.1113/jp284552] [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: 02/16/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023] Open
Abstract
Intestinal remodelling is dynamically regulated by energy metabolism. Exercise is beneficial for gut health, but the specific mechanisms remain poorly understood. Intestine-specific apelin receptor (APJ) knockdown (KD) and wild-type male mice were randomly divided into two subgroups, with/without exercise, to obtain four groups: WT, WT with exercise, APJ KD and APJ KD with exercise. Animals in the exercise groups were subjected to daily treadmill exercise for 3 weeks. Duodenum was collected at 48 h after the last bout of exercise. AMP-activated protein kinase (AMPK) α1 KD and wild-type mice were also utilized for investigating the mediatory role of AMPK on exercise-induced duodenal epithelial development. AMPK and peroxisome proliferator-activated receptor γ coactivator-1 α were upregulated by exercise via APJ activation in the intestinal duodenum. Correspondingly, exercise induced permissive histone modifications in the PR domain containing 16 (PRDM16) promoter to activate its expression, which was dependent on APJ activation. In agreement, exercise elevated the expression of mitochondrial oxidative markers. The expression of intestinal epithelial markers was downregulated due to AMPK deficiency, and AMPK signalling facilitated epithelial renewal. These data demonstrate that exercise-induced activation of the APJ-AMPK axis facilitates the homeostasis of the intestinal duodenal epithelium. KEY POINTS: Apelin receptor (APJ) signalling is required for improved epithelial homeostasis of the small intestine in response to exercise. Exercise intervention activates PRDM16 through inducing histone modifications, enhanced mitochondrial biogenesis and fatty acid metabolism in duodenum. The morphological development of duodenal villus and crypt is enhanced by the muscle-derived exerkine apelin through the APJ-AMP-activated protein kinase axis.
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Affiliation(s)
- Song Ah Chae
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Min Du
- Nutrigenomics and Growth Biology Laboratory, Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Jun Seok Son
- Laboratory of Perinatal Kinesioepigenetics, Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Department of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, WA 99164, USA
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7
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Zhang Q, Shen Y, Niloy SI, O'Rourke ST, Sun C. Chronic Effects of Apelin on Cardiovascular Regulation and Angiotensin II-Induced Hypertension. Pharmaceuticals (Basel) 2023; 16:ph16040600. [PMID: 37111357 PMCID: PMC10145143 DOI: 10.3390/ph16040600] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 03/29/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Apelin, by stimulation of APJ receptors, induces transient blood pressure (BP) reduction and positive inotropic effects. APJ receptors share high homology with the Ang II type 1 receptor; thus, apelin was proposed to play a protective role in cardiovascular disease by antagonizing the actions of Ang II. In this regard, apelin and apelin-mimetics are currently being studied in clinical trials. However, the chronic effect of apelin in cardiovascular regulation has not been fully investigated. In the current study, blood pressure (BP) and heart rate (HR) were recorded using a telemetry implantation approach in conscious rats, before and during chronic subcutaneous infusion of apelin-13, using osmotic minipumps. At the end of the recording, the cardiac myocyte morphology was examined using H&E staining, and cardiac fibrosis was evaluated by Sirius Red in each group of rats. The results demonstrated that the chronic infusion of apelin-13 did not change either BP or HR. However, under the same condition, the chronic infusion of Ang II induced significant BP elevation, cardiac hypertrophy, and fibrosis. Co-administration of apelin-13 did not significantly alter the Ang II-induced elevation in BP, changes in cardiac morphology, and fibrosis. Taken together, our experiments showed an unexpected result indicating that the chronic administration of apelin-13 did not alter basal BP, nor did it change Ang II-induced hypertension and cardiac hypertrophy. The findings suggest that an APJ receptor biased agonist could be a better therapeutic alternative for treatment of hypertension.
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Affiliation(s)
- Qi Zhang
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - Yue Shen
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - Sayeman Islam Niloy
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - Stephen T O'Rourke
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - Chengwen Sun
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND 58105, USA
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Tonkin D, Yee-Goh A, Katare R. Healing the Ischaemic Heart: A Critical Review of Stem Cell Therapies. Rev Cardiovasc Med 2023; 24:122. [PMID: 39076280 PMCID: PMC11273058 DOI: 10.31083/j.rcm2404122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/16/2023] [Accepted: 03/20/2023] [Indexed: 07/31/2024] Open
Abstract
Ischaemic heart disease (IHD) remains the leading cause of mortality worldwide. Current pharmaceutical treatments focus on delaying, rather than preventing disease progression. The only curative treatment available is orthotopic heart transplantation, which is greatly limited by a lack of available donors and the possibility for immune rejection. As a result, novel therapies are consistently being sought to improve the quality and duration of life of those suffering from IHD. Stem cell therapies have garnered attention globally owing to their potential to replace lost cardiac cells, regenerate the ischaemic myocardium and to release protective paracrine factors. Despite recent advances in regenerative cardiology, one of the biggest challenges in the clinical translation of cell-based therapies is determining the most efficacious cell type for repair. Multiple cell types have been investigated in clinical trials; with inconsistent methodologies and isolation protocols making it difficult to draw strong conclusions. This review provides an overview of IHD focusing on pathogenesis and complications, followed by a summary of different stem cells which have been trialled for use in the treatment of IHD, and ends by exploring the known mechanisms by which stem cells mediate their beneficial effects on ischaemic myocardium.
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Affiliation(s)
- Devin Tonkin
- Department of Physiology, HeartOtago, School of Biomedical Sciences, University of Otago, 9010 Dunedin, New Zealand
| | - Anthony Yee-Goh
- Department of Physiology, HeartOtago, School of Biomedical Sciences, University of Otago, 9010 Dunedin, New Zealand
| | - Rajesh Katare
- Department of Physiology, HeartOtago, School of Biomedical Sciences, University of Otago, 9010 Dunedin, New Zealand
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Pham DV, Nguyen TK, Park PH. Adipokines at the crossroads of obesity and mesenchymal stem cell therapy. Exp Mol Med 2023; 55:313-324. [PMID: 36750692 PMCID: PMC9981593 DOI: 10.1038/s12276-023-00940-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 02/09/2023] Open
Abstract
Mesenchymal stem cell (MSC) therapy is an emerging treatment strategy to counteract metabolic syndromes, including obesity and its comorbid disorders. However, its effectiveness is challenged by various factors in the obese environment that negatively impact MSC survival and function. The identification of these detrimental factors will provide opportunities to optimize MSC therapy for the treatment of obesity and its comorbidities. Dysregulated production of adipokines, a group of cytokines and hormones derived from adipose tissue, has been postulated to play a pivotal role in the development of obesity-associated complications. Intriguingly, adipokines have also been implicated in the modulation of viability, self-renewal, proliferation, and other properties of MSC. However, the involvement of adipokine imbalance in impaired MSC functionality has not been completely understood. On the other hand, treatment of obese individuals with MSC can restore the serum adipokine profile, suggesting the bidirectionality of the adipokine-MSC relationship. In this review, we aim to discuss the current knowledge on the central role of adipokines in the crosstalk between obesity and MSC dysfunction. We also summarize recent advances in the use of MSC for the treatment of obesity-associated diseases to support the hypothesis that adipokines modulate the benefits of MSC therapy in obese patients.
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Affiliation(s)
- Duc-Vinh Pham
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea
| | - Thi-Kem Nguyen
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea
| | - Pil-Hoon Park
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea. .,Research Institute of Cell Culture, Yeungnam University, Gyeongsan, Republic of Korea.
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Udani S, Langerman J, Koo D, Baghdasarian S, Cheng B, Kang S, Soemardy C, de Rutte J, Plath K, Carlo DD. Secretion encoded single-cell sequencing (SEC-seq) uncovers gene expression signatures associated with high VEGF-A secretion in mesenchymal stromal cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.07.523110. [PMID: 36711480 PMCID: PMC9881958 DOI: 10.1101/2023.01.07.523110] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cells secrete numerous bioactive molecules essential for the function of healthy organisms. However, there are no scalable methods to link individual cell secretions to their transcriptional state. By developing and using secretion encoded single-cell sequencing (SEC-seq), which exploits hydrogel nanovials to capture individual cells and their secretions, we simultaneously measured the secretion of vascular endothelial growth factor A (VEGF-A) and the transcriptome for thousands of individual mesenchymal stromal cells (MSCs). We found that VEGF-A secretion is heterogeneous across the cell population and lowly correlated with the VEGFA transcript level. While there is a modest population-wide increase in VEGF-A secretion by hypoxic induction, highest VEGF-A secretion across normoxic and hypoxic culture conditions occurs in a subpopulation of MSCs characterized by a unique gene expression signature. Taken together, SEC-seq enables the identification of specific genes involved in the control of secretory states, which may be exploited for developing means to modulate cellular secretion for disease treatment.
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Affiliation(s)
- Shreya Udani
- Department of Bioengineering, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Justin Langerman
- Department of Biological Chemistry, David Geffen School of Medicine, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Doyeon Koo
- Department of Bioengineering, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Sevana Baghdasarian
- Department of Chemical and Biomolecular Engineering, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Brian Cheng
- Department of Bioengineering, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Simran Kang
- Department of Bioengineering, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Citradewi Soemardy
- Department of Bioengineering, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | | | - Kathrin Plath
- Department of Biological Chemistry, David Geffen School of Medicine, University of California - Los Angeles, Los Angeles, CA 90095, USA
- Jonsson Comprehensive Cancer Center, University of California - Los Angeles, Los Angeles, CA 90095, USA
- Eli and Edythe Broad Stem Cell Research Center, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Dino Di Carlo
- Department of Bioengineering, University of California - Los Angeles, Los Angeles, CA 90095, USA
- Partillion Bioscience, Los Angeles, CA 90095, USA
- Jonsson Comprehensive Cancer Center, University of California - Los Angeles, Los Angeles, CA 90095, USA
- Department of Mechanical and Aerospace Engineering, University of California - Los Angeles, Los Angeles, CA 90095, USA
- California NanoSystems Institute (CNSI), University of California - Los Angeles, Los Angeles, CA 90095, USA
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11
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Wei NL, Xu W, Tang HL, Xie Q, Zhai Y, Chen J, Zhang XY, Zhu JH. Learning from magnetotactic bacteria: mms6 protects stem cells from oxidative damage. Front Cell Neurosci 2022; 16:1075640. [PMID: 36505515 PMCID: PMC9728029 DOI: 10.3389/fncel.2022.1075640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 11/02/2022] [Indexed: 11/24/2022] Open
Abstract
Oxidative damage generally exists in stroke and impairs stem cells' survival; however, the problem is difficult to treat. In order to help stem cells to resist this damage, we inserted a magnetotactic bacteria (MB) gene, mms6, into the neural stem cell genome by lentiviral transfection. It was found that the transfection of mms6 significantly improved the survival rate of stem cells in the condition of iron overload but not hypoxia. The bioenergetic profile also revealed that iron overloading weakened the mitochondrial respiration and spare respiration capacity of stem cells, but that these were enhanced after the expression of mms6. Additionally, Western blotting (WB) data revealed that mms6 upregulated the expression of glutathione peroxidase (GPX4), which protected stem cells from oxidative damage and ferroptosis. In order to determine the possible mechanisms, we analyzed the interactions between the MMS6 protein, Fe2+, and GPX4 via analog computation. The predicted models found that the MMS6 protein had a direct chelating site in the region of M6A with divalent iron; it also had weak binding with GPX4. Taken together, the magnetotactic bacterial gene mms6 protected stem cells from oxidative damage via binding with Fe2+, which could help them adapt to the microenvironment of stroke.
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Affiliation(s)
- Nai-Li Wei
- Department of Neurosurgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
- State Key Laboratory for Medical Neurobiology, Department of Neurosurgery, Institutes of Brain Science, Fudan University Huashan Hospital, Shanghai Medical College-Fudan University, Shanghai, China
| | - Wenjing Xu
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
- MOE Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence, MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Hai-Liang Tang
- State Key Laboratory for Medical Neurobiology, Department of Neurosurgery, Institutes of Brain Science, Fudan University Huashan Hospital, Shanghai Medical College-Fudan University, Shanghai, China
| | - Qiang Xie
- Department of Neurosurgery, Fudan University Zhongshan Hospital, Shanghai Medical College of Fudan University, Shanghai, China
| | - Yuting Zhai
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
- MOE Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence, MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Jian Chen
- Department of Neurosurgery, The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Xiao-Yong Zhang
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
- MOE Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence, MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Jian-Hong Zhu
- State Key Laboratory for Medical Neurobiology, Department of Neurosurgery, Institutes of Brain Science, Fudan University Huashan Hospital, Shanghai Medical College-Fudan University, Shanghai, China
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12
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Matta A, Nader V, Lebrin M, Gross F, Prats AC, Cussac D, Galinier M, Roncalli J. Pre-Conditioning Methods and Novel Approaches with Mesenchymal Stem Cells Therapy in Cardiovascular Disease. Cells 2022; 11:1620. [PMID: 35626657 PMCID: PMC9140025 DOI: 10.3390/cells11101620] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 02/04/2023] Open
Abstract
Transplantation of mesenchymal stem cells (MSCs) in the setting of cardiovascular disease, such as heart failure, cardiomyopathy and ischemic heart disease, has been associated with good clinical outcomes in several trials. A reduction in left ventricular remodeling, myocardial fibrosis and scar size, an improvement in endothelial dysfunction and prolonged cardiomyocytes survival were reported. The regenerative capacity, in addition to the pro-angiogenic, anti-apoptotic and anti-inflammatory effects represent the main target properties of these cells. Herein, we review the different preconditioning methods of MSCs (hypoxia, chemical and pharmacological agents) and the novel approaches (genetically modified MSCs, MSC-derived exosomes and engineered cardiac patches) suggested to optimize the efficacy of MSC therapy.
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Affiliation(s)
- Anthony Matta
- Department of Cardiology, Institute CARDIOMET, University Hospital of Toulouse, 31059 Toulouse, France; (A.M.); (V.N.); (M.L.); (F.G.); (M.G.)
- Faculty of Medicine, Holy Spirit University of Kaslik, Kaslik 446, Lebanon
- Department of Cardiology, Intercommunal Hospital Centre Castres-Mazamet, 81100 Castres, France
| | - Vanessa Nader
- Department of Cardiology, Institute CARDIOMET, University Hospital of Toulouse, 31059 Toulouse, France; (A.M.); (V.N.); (M.L.); (F.G.); (M.G.)
- Faculty of Pharmacy, Lebanese University, Beirut 6573/14, Lebanon
| | - Marine Lebrin
- Department of Cardiology, Institute CARDIOMET, University Hospital of Toulouse, 31059 Toulouse, France; (A.M.); (V.N.); (M.L.); (F.G.); (M.G.)
- CIC-Biotherapies, University Hospital of Toulouse, 31059 Toulouse, France
| | - Fabian Gross
- Department of Cardiology, Institute CARDIOMET, University Hospital of Toulouse, 31059 Toulouse, France; (A.M.); (V.N.); (M.L.); (F.G.); (M.G.)
- CIC-Biotherapies, University Hospital of Toulouse, 31059 Toulouse, France
| | | | - Daniel Cussac
- INSERM I2MC—UMR1297, 31432 Toulouse, France; (A.-C.P.); (D.C.)
| | - Michel Galinier
- Department of Cardiology, Institute CARDIOMET, University Hospital of Toulouse, 31059 Toulouse, France; (A.M.); (V.N.); (M.L.); (F.G.); (M.G.)
| | - Jerome Roncalli
- Department of Cardiology, Institute CARDIOMET, University Hospital of Toulouse, 31059 Toulouse, France; (A.M.); (V.N.); (M.L.); (F.G.); (M.G.)
- CIC-Biotherapies, University Hospital of Toulouse, 31059 Toulouse, France
- INSERM I2MC—UMR1297, 31432 Toulouse, France; (A.-C.P.); (D.C.)
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13
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Pircher T, Wackerhage H, Akova E, Böcker W, Aszodi A, Saller MM. Fusion of Normoxic- and Hypoxic-Preconditioned Myoblasts Leads to Increased Hypertrophy. Cells 2022; 11:cells11061059. [PMID: 35326510 PMCID: PMC8947054 DOI: 10.3390/cells11061059] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/14/2022] [Accepted: 03/19/2022] [Indexed: 12/20/2022] Open
Abstract
Injuries, high altitude, and endurance exercise lead to hypoxic conditions in skeletal muscle and sometimes to hypoxia-induced local tissue damage. Thus, regenerative myoblasts/satellite cells are exposed to different levels and durations of partial oxygen pressure depending on the spatial distance from the blood vessels. To date, it is unclear how hypoxia affects myoblasts proliferation, differentiation, and particularly fusion with normoxic myoblasts. To study this, we investigated how 21% and 2% oxygen affects C2C12 myoblast morphology, proliferation, and myogenic differentiation and evaluated the fusion of normoxic- or hypoxic-preconditioned C2C12 cells in 21% or 2% oxygen in vitro. Out data show that the long-term hypoxic culture condition does not affect the proliferation of C2C12 cells but leads to rounder cells and reduced myotube formation when compared with myoblasts exposed to normoxia. However, when normoxic- and hypoxic-preconditioned myoblasts were differentiated together, the resultant myotubes were significantly larger than the control myotubes. Whole transcriptome sequencing analysis revealed several novel candidate genes that are differentially regulated during the differentiation under normoxia and hypoxia in mixed culture conditions and may thus be involved in the increase in myotube size. Taken together, oxygen-dependent adaption and interaction of myoblasts may represent a novel approach for the development of innovative therapeutic targets.
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Affiliation(s)
- Tamara Pircher
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (T.P.); (E.A.); (W.B.); (A.A.)
| | - Henning Wackerhage
- Faculty of Sport and Health Sciences, Technical University of Munich, Georg-Brauchle-Ring 60, 80992 Munich, Germany;
| | - Elif Akova
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (T.P.); (E.A.); (W.B.); (A.A.)
| | - Wolfgang Böcker
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (T.P.); (E.A.); (W.B.); (A.A.)
| | - Attila Aszodi
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (T.P.); (E.A.); (W.B.); (A.A.)
| | - Maximilian M. Saller
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), Ludwig-Maximilians-University (LMU), Fraunhoferstraße 20, 82152 Planegg-Martinsried, Germany; (T.P.); (E.A.); (W.B.); (A.A.)
- Correspondence: ; Tel.: +49-89-4400-55486
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14
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Long-Term Hypoxia Maintains a State of Dedifferentiation and Enhanced Stemness in Fetal Cardiovascular Progenitor Cells. Int J Mol Sci 2021; 22:ijms22179382. [PMID: 34502291 PMCID: PMC8431563 DOI: 10.3390/ijms22179382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/20/2021] [Accepted: 08/25/2021] [Indexed: 12/03/2022] Open
Abstract
Early-stage mammalian embryos survive within a low oxygen tension environment and develop into fully functional, healthy organisms despite this hypoxic stress. This suggests that hypoxia plays a regulative role in fetal development that influences cell mobilization, differentiation, proliferation, and survival. The long-term hypoxic environment is sustained throughout gestation. Elucidation of the mechanisms by which cardiovascular stem cells survive and thrive under hypoxic conditions would benefit cell-based therapies where stem cell survival is limited in the hypoxic environment of the infarcted heart. The current study addressed the impact of long-term hypoxia on fetal Islet-1+ cardiovascular progenitor cell clones, which were isolated from sheep housed at high altitude. The cells were then cultured in vitro in 1% oxygen and compared with control Islet-1+ cardiovascular progenitor cells maintained at 21% oxygen. RT-PCR, western blotting, flow cytometry, and migration assays evaluated adaptation to long term hypoxia in terms of survival, proliferation, and signaling. Non-canonical Wnt, Notch, AKT, HIF-2α and Yap1 transcripts were induced by hypoxia. The hypoxic niche environment regulates these signaling pathways to sustain the dedifferentiation and survival of fetal cardiovascular progenitor cells.
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15
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Moeinabadi-Bidgoli K, Babajani A, Yazdanpanah G, Farhadihosseinabadi B, Jamshidi E, Bahrami S, Niknejad H. Translational insights into stem cell preconditioning: From molecular mechanisms to preclinical applications. Biomed Pharmacother 2021; 142:112026. [PMID: 34411911 DOI: 10.1016/j.biopha.2021.112026] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 08/05/2021] [Accepted: 08/07/2021] [Indexed: 02/06/2023] Open
Abstract
Cell-based therapy (CBT) is a revolutionary approach for curing a variety of degenerative diseases. Stem cell-based regenerative medicine is a novel strategy for treating tissue damages regarding stem cells unique properties such as differentiation potential, paracrine impacts, and self-renewal ability. However, the current cell-based treatments encounter considerable challenges to be translated into clinical practice, including low cell survival, migration, and differentiation rate of transplanted stem cells. The poor stem cell therapy outcomes mainly originate from the unfavorable condition of damaged tissues for transplanted stem cells. The promising method of preconditioning improves cell resistance against the host environment's stress by imposing certain conditions similar to the harsh microenvironment of the damaged tissues on the transplanted stem cells. Various pharmacological, biological, and physical inducers are able to establish preconditioning. In addition to their known pharmacological effects on tissues and cells, these preconditioning agents improve cell biological aspects such as cell survival, proliferation, differentiation, migration, immunomodulation, paracrine impacts, and angiogenesis. This review focuses on different protocols and inducers of preconditioning along with underlying molecular mechanisms of their effects on stem cell behavior. Moreover, preclinical applications of preconditioned stem cells in various damaged organs such as heart, lung, brain, bone, cartilage, liver, and kidney are discussed with prospects of their translation into the clinic.
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Affiliation(s)
- Kasra Moeinabadi-Bidgoli
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirhesam Babajani
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ghasem Yazdanpanah
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago, IL, USA
| | | | - Elham Jamshidi
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soheyl Bahrami
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in AUVA Research Center, Vienna, Austria
| | - Hassan Niknejad
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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16
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Strutt B, Szlapinski S, Gnaneswaran T, Donegan S, Hill J, Bennett J, Hill DJ. Ontology of the apelinergic system in mouse pancreas during pregnancy and relationship with β-cell mass. Sci Rep 2021; 11:15475. [PMID: 34326390 PMCID: PMC8322410 DOI: 10.1038/s41598-021-94725-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 07/15/2021] [Indexed: 02/07/2023] Open
Abstract
The apelin receptor (Aplnr) and its ligands, Apelin and Apela, contribute to metabolic control. The insulin resistance associated with pregnancy is accommodated by an expansion of pancreatic β-cell mass (BCM) and increased insulin secretion, involving the proliferation of insulin-expressing, glucose transporter 2-low (Ins+Glut2LO) progenitor cells. We examined changes in the apelinergic system during normal mouse pregnancy and in pregnancies complicated by glucose intolerance with reduced BCM. Expression of Aplnr, Apelin and Apela was quantified in Ins+Glut2LO cells isolated from mouse pancreata and found to be significantly higher than in mature β-cells by DNA microarray and qPCR. Apelin was localized to most β-cells by immunohistochemistry although Aplnr was predominantly associated with Ins+Glut2LO cells. Aplnr-staining cells increased three- to four-fold during pregnancy being maximal at gestational days (GD) 9-12 but were significantly reduced in glucose intolerant mice. Apelin-13 increased β-cell proliferation in isolated mouse islets and INS1E cells, but not glucose-stimulated insulin secretion. Glucose intolerant pregnant mice had significantly elevated serum Apelin levels at GD 9 associated with an increased presence of placental IL-6. Placental expression of the apelinergic axis remained unaltered, however. Results show that the apelinergic system is highly expressed in pancreatic β-cell progenitors and may contribute to β-cell proliferation in pregnancy.
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Affiliation(s)
- Brenda Strutt
- Lawson Health Research Institute, St Joseph Health Care, 268 Grosvenor St, London, ON, N6A 4V2, Canada
| | - Sandra Szlapinski
- Lawson Health Research Institute, St Joseph Health Care, 268 Grosvenor St, London, ON, N6A 4V2, Canada
- Department of Physiology and Pharmacology, Western University, London, ON, N6A 3K7, Canada
| | - Thineesha Gnaneswaran
- Department of Physiology and Pharmacology, Western University, London, ON, N6A 3K7, Canada
| | - Sarah Donegan
- Department of Physiology and Pharmacology, Western University, London, ON, N6A 3K7, Canada
| | - Jessica Hill
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, EX2 5DW, UK
| | - Jamie Bennett
- Lawson Health Research Institute, St Joseph Health Care, 268 Grosvenor St, London, ON, N6A 4V2, Canada
- Life Sciences Program, School of Interdisciplinary Science, McMaster University, Hamilton, ON, L8S 4LD, Canada
| | - David J Hill
- Lawson Health Research Institute, St Joseph Health Care, 268 Grosvenor St, London, ON, N6A 4V2, Canada.
- Department of Physiology and Pharmacology, Western University, London, ON, N6A 3K7, Canada.
- Departments of Medicine and Paediatrics, Western University, London, ON, N6A 3K7, Canada.
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17
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Szlapinski SK, Hill DJ. Metabolic Adaptations to Pregnancy in Healthy and Gestational Diabetic Pregnancies: The Pancreas - Placenta Axis. Curr Vasc Pharmacol 2021; 19:141-153. [PMID: 32196450 DOI: 10.2174/1570161118666200320111209] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 02/20/2020] [Accepted: 03/01/2020] [Indexed: 12/16/2022]
Abstract
Normal pregnancy is associated with increased insulin resistance as a metabolic adaptation to the nutritional demands of the placenta and fetus, and this is amplified in obese mothers. Insulin resistance is normally compensated for by an adaptive increase in pancreatic β-cell mass together with enhanced glucose-stimulated insulin release. Placentally-derived hormones and growth factors are central to the altered pancreatic morphology and function. A failure of β-cells to undergo adaptive change after the first trimester has been linked with gestational diabetes. In the pregnant mouse, an increase in β-cell replication contributes to a 2-3-fold increase in mass peaking in late gestation, depending on the proliferation of existing β-cells, the differentiation of resident progenitor β-cells, or islet cell transdifferentiation. Using mouse models and human studies placenta- and islet of Langerhans-derived molecules have been identified that are likely to contribute to the metabolic adaptations to pregnancy and whose physiology is altered in the obese, glucose-intolerant mother. Maternal obesity during pregnancy can create a pro-inflammatory environment that can disrupt the response of the β-cells to the endocrine signals of pregnancy and limit the adaptive changes in β-cell mass and function, resulting in an increased risk of gestational diabetes.
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Affiliation(s)
- Sandra K Szlapinski
- Lawson Health Research Institute, St. Joseph's Health Care, 268 Grosvenor Street, London, Ontario N6A 4V2, Canada
| | - David J Hill
- Lawson Health Research Institute, St. Joseph's Health Care, 268 Grosvenor Street, London, Ontario N6A 4V2, Canada
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18
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Hu XM, Zhang Q, Zhou RX, Wu YL, Li ZX, Zhang DY, Yang YC, Yang RH, Hu YJ, Xiong K. Programmed cell death in stem cell-based therapy: Mechanisms and clinical applications. World J Stem Cells 2021; 13:386-415. [PMID: 34136072 PMCID: PMC8176847 DOI: 10.4252/wjsc.v13.i5.386] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/26/2021] [Accepted: 05/07/2021] [Indexed: 02/06/2023] Open
Abstract
Stem cell-based therapy raises hopes for a better approach to promoting tissue repair and functional recovery. However, transplanted stem cells show a high death percentage, creating challenges to successful transplantation and prognosis. Thus, it is necessary to investigate the mechanisms underlying stem cell death, such as apoptotic cascade activation, excessive autophagy, inflammatory response, reactive oxygen species, excitotoxicity, and ischemia/hypoxia. Targeting the molecular pathways involved may be an efficient strategy to enhance stem cell viability and maximize transplantation success. Notably, a more complex network of cell death receives more attention than one crucial pathway in determining stem cell fate, highlighting the challenges in exploring mechanisms and therapeutic targets. In this review, we focus on programmed cell death in transplanted stem cells. We also discuss some promising strategies and challenges in promoting survival for further study.
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Affiliation(s)
- Xi-Min Hu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan Province, China
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, China
| | - Qi Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan Province, China
| | - Rui-Xin Zhou
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan Province, China
| | - Yan-Lin Wu
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan Province, China
| | - Zhi-Xin Li
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan Province, China
| | - Dan-Yi Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan Province, China
| | - Yi-Chao Yang
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan Province, China
| | - Rong-Hua Yang
- Department of Burns, Fo Shan Hospital of Sun Yat-Sen University, Foshan 528000, Guangdong Province, China
| | - Yong-Jun Hu
- Department of Cardiovascular Medicine, Hunan People's Hospital (the First Affiliated Hospital of Hunan Normal University, Changsha 410005, Hunan Province, China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha 410013, Hunan Province, China
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19
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Sharma P, Wang X, Ming CLC, Vettori L, Figtree G, Boyle A, Gentile C. Considerations for the Bioengineering of Advanced Cardiac In Vitro Models of Myocardial Infarction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2003765. [PMID: 33464713 DOI: 10.1002/smll.202003765] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 09/03/2020] [Indexed: 06/12/2023]
Abstract
Despite the latest advances in cardiovascular biology and medicine, myocardial infarction (MI) remains one of the major causes of deaths worldwide. While reperfusion of the myocardium is critical to limit the ischemic damage typical of a MI event, it causes detrimental morphological and functional changes known as "reperfusion injury." This complex scenario is poorly represented in currently available models of ischemia/reperfusion injury, leading to a poor translation of findings from the bench to the bedside. However, more recent bioengineered in vitro models of the human heart represent more clinically relevant tools to prevent and treat MI in patients. These include 3D cultures of cardiac cells, the use of patient-derived stem cells, and 3D bioprinting technology. This review aims at highlighting the major features typical of a heart attack while comparing current in vitro, ex vivo, and in vivo models. This information has the potential to further guide in developing novel advanced in vitro cardiac models of ischemia/reperfusion injury. It may pave the way for the generation of advanced pathophysiological cardiac models with the potential to develop personalized therapies.
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Affiliation(s)
- Poonam Sharma
- Faculty of Medicine and Health, University of Newcastle, Newcastle, NSW, 2308, Australia
- School of Medicine and Public Health, University of Sydney, Sydney, NSW, 2000, Australia
- Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, NSW, 2065, Australia
- School of Biomedical Engineering/FEIT, University of Technology Sydney, Building 11, Level 10, Room 115, 81 Broadway, Ultimo, NSW, 2007, Australia
| | - Xiaowei Wang
- Molecular Imaging and Theranostics Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, 3004, Australia
| | - Clara Liu Chung Ming
- School of Biomedical Engineering/FEIT, University of Technology Sydney, Building 11, Level 10, Room 115, 81 Broadway, Ultimo, NSW, 2007, Australia
| | - Laura Vettori
- School of Biomedical Engineering/FEIT, University of Technology Sydney, Building 11, Level 10, Room 115, 81 Broadway, Ultimo, NSW, 2007, Australia
| | - Gemma Figtree
- School of Medicine and Public Health, University of Sydney, Sydney, NSW, 2000, Australia
- Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, NSW, 2065, Australia
| | - Andrew Boyle
- Faculty of Medicine and Health, University of Newcastle, Newcastle, NSW, 2308, Australia
| | - Carmine Gentile
- School of Medicine and Public Health, University of Sydney, Sydney, NSW, 2000, Australia
- Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, NSW, 2065, Australia
- School of Biomedical Engineering/FEIT, University of Technology Sydney, Building 11, Level 10, Room 115, 81 Broadway, Ultimo, NSW, 2007, Australia
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20
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Bai YT, Xiao FJ, Wang H, Ge RL, Wang LS. Hypoxia protects H9c2 cells against Ferroptosis through SENP1-mediated protein DeSUMOylation. Int J Med Sci 2021; 18:1618-1627. [PMID: 33746578 PMCID: PMC7976564 DOI: 10.7150/ijms.50804] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 01/04/2021] [Indexed: 01/19/2023] Open
Abstract
Hypoxia affects proliferation, differentiation, as well as death of cardiomyocyte, and plays an important role in the development of myocardial ischemia. However, the detailed mechanisms through which hypoxia regulates cardiomyocyte ferroptosis have not been explored. In this study, we revealed that hypoxia suppresses the proliferation, migration, and erastin-induced ferroptosis of H9c2 cells. First, we confirmed the upregulation of SENP1 in H9c2 cells cultured under hypoxic conditions. Through adenovirus-mediated SENP1 gene transfection, we demonstrated that SENP1 overexpression could enhance H9c2 cell proliferation and migration while also protecting H9c2 cells from erastin-induced ferroptosis. Furthermore, through immunoprecipitation and western blotting, we confirmed that SENP1 mediated deSUMOylation of HIF-1α and ACSL4 in H9c2 cells. In conclusion, this study describes the underlying mechanism through which hypoxia upregulates SENP1 expression, in turn protecting against ferroptosis via the regulation of HIF-1α and ACSL4 deSUMOylation. Our findings provide a theoretical foundation for the development of novel therapeutics for ischemic heart diseases.
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Affiliation(s)
- Yu-Ting Bai
- Qinghai Provincial People's Hospital, Xining, 810001, PR China.,Research Center for High Altitude Medicine, Qinghai University, Xining, 810001, PR China
| | - Feng-Jun Xiao
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Hua Wang
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China
| | - Ri-Li Ge
- Research Center for High Altitude Medicine, Qinghai University, Xining, 810001, PR China
| | - Li-Sheng Wang
- Beijing Institute of Radiation Medicine, Beijing, 100850, PR China.,Department of Molecular Diagnosis and Regenerative Medicine, Medical Research Center, the Affiliate Hospital of Qingdao University, Qingdao 266000, PR. China
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21
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Li X, Zhang Q, Nasser MI, Xu L, Zhang X, Zhu P, He Q, Zhao M. Oxygen homeostasis and cardiovascular disease: A role for HIF? Biomed Pharmacother 2020; 128:110338. [PMID: 32526454 DOI: 10.1016/j.biopha.2020.110338] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/27/2020] [Accepted: 05/30/2020] [Indexed: 12/17/2022] Open
Abstract
Hypoxia, the decline of tissue oxygen stress, plays a role in mediating cellular processes. Cardiovascular disease, relatively widespread with increased mortality, is closely correlated with oxygen homeostasis regulation. Besides, hypoxia-inducible factor-1(HIF-1) is reported to be a crucial component in regulating systemic hypoxia-induced physiological and pathological modifications like oxidative stress, damage, angiogenesis, vascular remodeling, inflammatory reaction, and metabolic remodeling. In addition, HIF1 controls the movement, proliferation, apoptosis, differentiation and activity of numerous core cells, such as cardiomyocytes, endothelial cells (ECs), smooth muscle cells (SMCs), and macrophages. Here we review the molecular regulation of HIF-1 in cardiovascular diseases, intended to improve therapeutic approaches for clinical diagnoses. Better knowledge of the oxygen balance control and the signal mechanisms involved is important to advance the development of hypoxia-related diseases.
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Affiliation(s)
- Xinyu Li
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province 410013, China; Xiangya School of Medicine, Central South University, Changsha, Hunan Province 410013, China
| | - Quyan Zhang
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province 410013, China; Xiangya School of Medicine, Central South University, Changsha, Hunan Province 410013, China
| | - M I Nasser
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510100, China
| | - Linyong Xu
- Xiangya School of Life Science, Central South University, Changsha, Hunan Province 410013, China
| | - Xueyan Zhang
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province 410013, China; Xiangya School of Medicine, Central South University, Changsha, Hunan Province 410013, China
| | - Ping Zhu
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510100, China.
| | - Qingnan He
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province 410013, China.
| | - Mingyi Zhao
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan Province 410013, China.
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22
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Hansen JM, Jones DP, Harris C. The Redox Theory of Development. Antioxid Redox Signal 2020; 32:715-740. [PMID: 31891515 PMCID: PMC7047088 DOI: 10.1089/ars.2019.7976] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 12/30/2019] [Indexed: 12/16/2022]
Abstract
Significance: The geological record shows that as atmospheric O2 levels increased, it concomitantly coincided with the evolution of metazoans. More complex, higher organisms contain a more cysteine-rich proteome, potentially as a means to regulate homeostatic responses in a more O2-rich environment. Regulation of redox-sensitive processes to control development is likely to be evolutionarily conserved. Recent Advances: During early embryonic development, the conceptus is exposed to varying levels of O2. Oxygen and redox-sensitive elements can be regulated to promote normal development, defined as changes to cellular mass, morphology, biochemistry, and function, suggesting that O2 is a developmental morphogen. During periods of O2 fluctuation, embryos are "reprogrammed," on the genomic and metabolic levels. Reprogramming imparts changes to particular redox couples (nodes) that would support specific post-translational modifications (PTMs), targeting the cysteine proteome to regulate protein function and development. Critical Issues: Major developmental events such as stem cell expansion, proliferation, differentiation, migration, and cell fate decisions are controlled through oxidative PTMs of cysteine-based redox nodes. As such, timely coordinated redox regulation of these events yields normal developmental outcomes and viable species reproduction. Disruption of normal redox signaling can produce adverse developmental outcomes. Future Directions: Furthering our understanding of the redox-sensitive processes/pathways, the nature of the regulatory PTMs involved in development and periods of activation/sensitivity to specific developmental pathways would greatly support the theory of redox regulation of development, and would also provide rationale and direction to more fully comprehend poor developmental outcomes, such as dysmorphogenesis, functional deficits, and preterm embryonic death.
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Affiliation(s)
- Jason M. Hansen
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, Utah
| | - Dean P. Jones
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, School of Medicine, Emory University, Atlanta, Georgia
| | - Craig Harris
- Toxicology Program, Department of Environmental Sciences, University of Michigan, Ann Arbor, Michigan
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Mohammadi C, Sameri S, Najafi R. Insight into adipokines to optimize therapeutic effects of stem cell for tissue regeneration. Cytokine 2020; 128:155003. [PMID: 32000014 DOI: 10.1016/j.cyto.2020.155003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 01/18/2020] [Accepted: 01/20/2020] [Indexed: 11/29/2022]
Abstract
Stem cell therapy is considered as a promising regenerative medicine for repairing and treating damaged tissues and/or preventing various diseases. But there are still some obstacles such as low cell migration, poor stem cell engraftment and decreased cell survival that need to be overcome before transplantation. Therefore, a large body of studies has focused on improving the efficiency of stem cell therapy. For instance, preconditioning of stem cells has emerged as an effective strategy to reinforce therapeutic efficacy. Adipokines are signaling molecules, secreted by adipose tissue, which regulate a variety of biological processes in adipose tissue and other organs including the brain, liver, and muscle. In this review article, we shed light on the biological effects of some adipokines including apelin, oncostatin M, omentin-1 and vaspin on stem cell therapy and the most recent preclinical advances in our understanding of how these functions ameliorate stem cell therapy outcome.
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Affiliation(s)
- Chiman Mohammadi
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Saba Sameri
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Rezvan Najafi
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
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Roles of the Hepatic Endocannabinoid and Apelin Systems in the Pathogenesis of Liver Fibrosis. Cells 2019; 8:cells8111311. [PMID: 31653030 PMCID: PMC6912778 DOI: 10.3390/cells8111311] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/17/2019] [Accepted: 10/23/2019] [Indexed: 12/11/2022] Open
Abstract
Hepatic fibrosis is the consequence of an unresolved wound healing process in response to chronic liver injury and involves multiple cell types and molecular mechanisms. The hepatic endocannabinoid and apelin systems are two signalling pathways with a substantial role in the liver fibrosis pathophysiology-both are upregulated in patients with advanced liver disease. Endogenous cannabinoids are lipid-signalling molecules derived from arachidonic acid involved in the pathogenesis of cardiovascular dysfunction, portal hypertension, liver fibrosis, and other processes associated with hepatic disease through their interactions with the CB1 and CB2 receptors. Apelin is a peptide that participates in cardiovascular and renal functions, inflammation, angiogenesis, and hepatic fibrosis through its interaction with the APJ receptor. The endocannabinoid and apelin systems are two of the multiple cell-signalling pathways involved in the transformation of quiescent hepatic stellate cells into myofibroblast like cells, the main matrix-producing cells in liver fibrosis. The mechanisms underlying the control of hepatic stellate cell activity are coincident despite the marked dissimilarities between the endocannabinoid and apelin signalling pathways. This review discusses the current understanding of the molecular and cellular mechanisms by which the hepatic endocannabinoid and apelin systems play a significant role in the pathophysiology of liver fibrosis.
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Wang B, Gu TX, Yu FM, Zhang GW, Zhao Y. Overexpression of miR-210 promotes the potential of cardiac stem cells against hypoxia. SCAND CARDIOVASC J 2019; 52:367-371. [PMID: 30668175 DOI: 10.1080/14017431.2019.1567932] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To evaluate the effects of miR-210 on cardiac stem cells (CSCs) against hypoxia-induced injury. METHODS CSCs were isolated from rat ventricular wall and cultured until passage 4. After exposure to hypoxia for 6 h, the expression of miR-210 was determined. Thereafter, transfection of miR-210 mimic and inhibitor was carried out. 1 week later, in vitro experiments were performed to measure the expression of caspase-8-associated protein 2 (Casp8ap2), Caspase 8, protein tyrosine phosphatase, non-receptor type 2 (PTPN2) and CXC chemokine receptor 4 (CXCR4), as well as migration and apoptosis of CSCs under hypoxic condition. RESULTS Hypoxia induced a significant up-regulation of miR-210 expression in CSCs. Notably, the expression of Casp8ap2, Caspase8, PTPN2 was dramatically inhibited by overexpression of miR-210 in CSCsmiR-210 Group (P < .05), but no changes in CXCR4 (P > .05), compared with the control. Additionally, a decreased apoptosis of CSCs was detected in CSCsmiR-210 Group (26.22 ± 1.15%, P < .001), compared with Control Group (34.97 ± 0.63%). Moreover, the migration of CSCs was significantly promoted in CSCsmiR-210 Group (45.73 ± 2.4, P < .001), compared with Control Group (19.6 ± 1.11). Meanwhile, down-regulation of miR-210 reversed these results (P < .05). CONCLUSIONS miR-210 was a hypoxia responsive element in CSCs, and its up-regulation inhibited apoptosis of CSCs and promoted their migration under hypoxic condition, through regulating its target genes Casp8ap2/Caspase 8 and PTPN2, which may provide a new strategy for cell therapy of ischemic heart disease.
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Affiliation(s)
- Bin Wang
- a Department of Cardiac Surgery , The First Hospital of China Medical University , Shenyang , China.,b Department of Cardiac Surgery , Harrison International Pease Hospital , Hengshui , China
| | - Tian-Xiang Gu
- a Department of Cardiac Surgery , The First Hospital of China Medical University , Shenyang , China
| | - Fu-Min Yu
- a Department of Cardiac Surgery , The First Hospital of China Medical University , Shenyang , China
| | - Guang-Wei Zhang
- a Department of Cardiac Surgery , The First Hospital of China Medical University , Shenyang , China
| | - Ye Zhao
- a Department of Cardiac Surgery , The First Hospital of China Medical University , Shenyang , China
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Hong XY, Hong X, Gu WW, Lin J, Yin WT. Cardioprotection and improvement in endothelial-dependent vasodilation during late-phase of whole body hypoxic preconditioning in spontaneously hypertensive rats via VEGF and endothelin-1. Eur J Pharmacol 2018; 842:79-88. [PMID: 30401629 DOI: 10.1016/j.ejphar.2018.10.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/17/2018] [Accepted: 10/24/2018] [Indexed: 12/13/2022]
Abstract
The present study was designed to investigate the effect of late phase of whole body hypoxic preconditioning on endothelial-dependent vasorelaxation and cardioprotection from ischemia-reperfusion injury in spontaneously hypertensive rats (SHR). Hypoxic preconditioning was performed by subjecting rats to four episodes of alternate exposure to low O2 (8%) and normal air O2 of 10 min each. After 24 h, the mesenteric arteries and hearts were isolated to determine the vascular function and cardioprotection from ischemia-reperfusion (I/R) injury on the Langendorff apparatus. There was a significant impairment in acetylcholine-induced relaxation in norepinephrine precontracted arteries (endothelium-dependent function) and increase in I/R-induced myocardial injury in SHR in comparison to Wistar Kyoto rats (WKY). However, hypoxic preconditioning significantly restored endothelium-dependent relaxation in SHR and attenuated I/R injury in both SHR and WKY. Hypoxic preconditioning also led to an increase in the levels of endothelin-1 (not endothelin-2 or -3), vascular endothelial growth factor-A (VEGF-A) and HIF-1α levels. Pretreatment with bevacizumab (anti-VEGF-A) and bosentan (endothelin receptor blocker) significantly attenuated hypoxic preconditioning-induced restoration of endothelium-dependent relaxation and cardioprotection from I/R injury. These interventions also attenuated the levels of VEGF-A and HIF-1α without modulating the endothelin-1 levels. It may be concluded that an increase in the endothelin-1 levels with a subsequent increase in HIF-1α and VEGF expression may possibly contribute in improving endothelium-dependent vasorelaxation and protecting hearts from I/R injury in SHR during late phase of whole body hypoxic preconditioning.
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Affiliation(s)
- Xing-Yu Hong
- Department of Vascular Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
| | - Xin Hong
- Department of Vascular Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
| | - Wei-Wei Gu
- Department of Hepatopancreatobility Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
| | - Jie Lin
- Department of Vascular Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
| | - Wei-Tian Yin
- Department of Hand Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
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Induction of the mitochondrial NDUFA4L2 protein by HIF-1a regulates heart regeneration by promoting the survival of cardiac stem cell. Biochem Biophys Res Commun 2018; 503:2226-2233. [PMID: 29953852 DOI: 10.1016/j.bbrc.2018.06.142] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 06/25/2018] [Indexed: 12/11/2022]
Abstract
The adult mammalian heart doesn't regenerate after cardiomyocyte injury, which was mainly caused by the severe and persistent effects of cardiomyopathy. Recently, some studies reported that the mammalian heart can regenerate under low oxygen environment. However, the mechanism that the mammalian heart can regenerate remains unknown. Here, we used cardiac stem cells (CSCs) to be planted in serum-free medium under hypoxia environment to understand the mechanism of HIF1α/NDUFA4L2 in the regulation of hypoxia-alleviated apoptosis. Our results revealed that hypoxia can alleviated CSCs apoptosis. Hypoxia inhibited the level of cleaved-caspase3 and stimulated the expression of stabilized HIF-1α. DMOG promotes the survival of CSCs and the protein expression of NDUFA4L2. 2-ME repressed the survival of CSCs and the protein expression of NDUFA4L2. CHIP assay showed that HIF-1α regulated the survival of CSCs by augmenting the combination of HIF-1α and NDUFA4L2's HRE. Knockdown of NDUFA4L2 reversed the role of hypoxia in the survival of CSCs. Taken together, hypoxia promotes the viability of CSCs in serum-free medium by HIF-1α/NDUFA4L2 signaling pathway.
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Abstract
Apelin is a vasoactive peptide and is an endogenous ligand for APJ receptors, which are widely expressed in blood vessels, heart, and cardiovascular regulatory regions of the brain. A growing body of evidence now demonstrates a regulatory role for the apelin/APJ receptor system in cardiovascular physiology and pathophysiology, thus making it a potential target for cardiovascular drug discovery and development. Indeed, ongoing studies are investigating the potential benefits of apelin and apelin-mimetics for disorders such as heart failure and pulmonary arterial hypertension. Apelin causes relaxation of isolated arteries, and systemic administration of apelin typically results in a reduction in systolic and diastolic blood pressure and an increase in blood flow. Nonetheless, vasopressor responses and contraction of vascular smooth muscle in response to apelin have also been observed under certain conditions. The goal of the current review is to summarize major findings regarding the apelin/APJ receptor system in blood vessels, with an emphasis on regulation of vascular tone, and to identify areas of investigation that may provide guidance for the development of novel therapeutic agents that target this system.
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Affiliation(s)
- Amreen Mughal
- Department of Pharmaceutical Sciences, North Dakota State University Fargo, ND, USA
| | - Stephen T O'Rourke
- Department of Pharmaceutical Sciences, North Dakota State University Fargo, ND, USA.
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