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Yin X, Wei Y, Qin H, Zhao J, Chen Y, Yao S, Li N, Xiong A, Wang D, Zhang P, Liu P, Zeng H, Chen Y. Oxygen tension regulating hydrogels for vascularization and osteogenesis via sequential activation of HIF-1α and ERK1/2 signaling pathways in bone regeneration. BIOMATERIALS ADVANCES 2024; 161:213893. [PMID: 38796955 DOI: 10.1016/j.bioadv.2024.213893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 04/17/2024] [Accepted: 05/13/2024] [Indexed: 05/29/2024]
Abstract
Angiogenesis plays a crucial role in bone regeneration. Hypoxia is a driving force of angiogenesis at the initial stage of tissue repair. The hypoxic microenvironment could activate the hypoxia-inducible factor (HIF)-1α signaling pathway in cells, thereby enhancing the proliferation, migration and pro-angiogenic functions of stem cells. However, long-term chronic hypoxia could inhibit osteogenic differentiation and even lead to apoptosis. Therefore, shutdown of the HIF-1α signaling pathway and providing oxygen at later stage probably facilitate osteogenic differentiation and bone regeneration. Herein, an oxygen tension regulating hydrogel that sequentially activate and deactivate the HIF-1α signaling pathway were prepared in this study. Its effect and mechanism on stem cell differentiation were investigated both in vitro and in vivo. We proposed a gelatin-based hydrogel capable of sequentially delivering a hypoxic inducer (copper ions) and oxygen generator (calcium peroxide). The copper ions released from the hydrogels significantly enhanced cell viability and VEGF secretion of BMSCs via upregulating HIF-1α expression and facilitating its translocation into the nucleus. Additionally, calcium peroxide promoted alkaline phosphatase activity, osteopontin secretion, and calcium deposition through the activation of ERK1/2. Both Cu2+ and calcium peroxide demonstrated osteogenic promotion individually, while their synergistic effect within the hydrogels led to a superior osteogenic effect by potentially activating the HIF-1α and ERK1/2 signaling pathways.
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Affiliation(s)
- Xianzhen Yin
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China; Center for Translational Medicine Research and Development, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yihao Wei
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Haotian Qin
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Jin Zhao
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Yixiao Chen
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Sen Yao
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Nan Li
- Department of Stomatology, Shenzhen People's Hospital (Second Clinical Medical School of Jinan University, First Affiliated Hospital of Southern University of Science and Technology), Shenzhen 518020, China
| | - Ao Xiong
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Deli Wang
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Peng Zhang
- Center for Translational Medicine Research and Development, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Peng Liu
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China.
| | - Hui Zeng
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China.
| | - Yingqi Chen
- Department of Bone & Joint Surgery, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China.
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Almahasneh F, Abu-El-Rub E, Khasawneh RR, Almazari R. Effects of high glucose and severe hypoxia on the biological behavior of mesenchymal stem cells at various passages. World J Stem Cells 2024; 16:434-443. [PMID: 38690519 PMCID: PMC11056633 DOI: 10.4252/wjsc.v16.i4.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/05/2024] [Accepted: 03/18/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) have been extensively studied for therapeutic potential, due to their regenerative and immunomodulatory properties. Serial passage and stress factors may affect the biological characteristics of MSCs, but the details of these effects have not been recognized yet. AIM To investigate the effects of stress factors (high glucose and severe hypoxia) on the biological characteristics of MSCs at different passages, in order to optimize the therapeutic applications of MSCs. METHODS In this study, we investigated the impact of two stress conditions; severe hypoxia and high glucose on human adipose-tissue derived MSCs (hAD-MSCs) at passages 6 (P6), P8, and P10. Proliferation, senescence and apoptosis were evaluated measuring WST-1, senescence-associated beta-galactosidase, and annexin V, respectively. RESULTS Cells at P6 showed decreased proliferation and increased apoptosis under conditions of high glucose and hypoxia compared to control, while the extent of senescence did not change significantly under stress conditions. At P8 hAD-MSCs cultured in stress conditions had a significant decrease in proliferation and apoptosis and a significant increase in senescence compared to counterpart cells at P6. Cells cultured in high glucose at P10 had lower proliferation and higher senescence than their counterparts in the previous passage, while no change in apoptosis was observed. On the other hand, MSCs cultured under hypoxia showed decreased senescence, increased apoptosis and no significant change in proliferation when compared to the same conditions at P8. CONCLUSION These results indicate that stress factors had distinct effects on the biological processes of MSCs at different passages, and suggest that senescence may be a protective mechanism for MSCs to survive under stress conditions at higher passage numbers.
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Affiliation(s)
- Fatimah Almahasneh
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan
| | - Ejlal Abu-El-Rub
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan.
| | - Ramada R Khasawneh
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan
| | - Rawan Almazari
- Department of Basic Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan
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Juhász KZ, Hajdú T, Kovács P, Vágó J, Matta C, Takács R. Hypoxic Conditions Modulate Chondrogenesis through the Circadian Clock: The Role of Hypoxia-Inducible Factor-1α. Cells 2024; 13:512. [PMID: 38534356 DOI: 10.3390/cells13060512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/28/2024] Open
Abstract
Hypoxia-inducible factor-1 (HIF-1) is a heterodimer transcription factor composed of an alpha and a beta subunit. HIF-1α is a master regulator of cellular response to hypoxia by activating the transcription of genes that facilitate metabolic adaptation to hypoxia. Since chondrocytes in mature articular cartilage reside in a hypoxic environment, HIF-1α plays an important role in chondrogenesis and in the physiological lifecycle of articular cartilage. Accumulating evidence suggests interactions between the HIF pathways and the circadian clock. The circadian clock is an emerging regulator in both developing and mature chondrocytes. However, how circadian rhythm is established during the early steps of cartilage formation and through what signaling pathways it promotes the healthy chondrocyte phenotype is still not entirely known. This narrative review aims to deliver a concise analysis of the existing understanding of the dynamic interplay between HIF-1α and the molecular clock in chondrocytes, in states of both health and disease, while also incorporating creative interpretations. We explore diverse hypotheses regarding the intricate interactions among these pathways and propose relevant therapeutic strategies for cartilage disorders such as osteoarthritis.
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Affiliation(s)
- Krisztián Zoltán Juhász
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Tibor Hajdú
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Patrik Kovács
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Judit Vágó
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Csaba Matta
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Roland Takács
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
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Yasan GT, Gunel-Ozcan A. Hypoxia and Hypoxia Mimetic Agents As Potential Priming Approaches to Empower Mesenchymal Stem Cells. Curr Stem Cell Res Ther 2024; 19:33-54. [PMID: 36642875 DOI: 10.2174/1574888x18666230113143234] [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: 07/29/2022] [Revised: 10/12/2022] [Accepted: 11/04/2022] [Indexed: 01/17/2023]
Abstract
Mesenchymal stem cells (MSC) exhibit self-renewal capacity and multilineage differentiation potential, making them attractive for research and clinical application. The properties of MSC can vary depending on specific micro-environmental factors. MSC resides in specific niches with low oxygen concentrations, where oxygen functions as a metabolic substrate and a signaling molecule. Conventional physical incubators or chemically hypoxia mimetic agents are applied in cultures to mimic the original low oxygen tension settings where MSC originated. This review aims to focus on the current knowledge of the effects of various physical hypoxic conditions and widely used hypoxia-mimetic agents-PHD inhibitors on mesenchymal stem cells at a cellular and molecular level, including proliferation, stemness, differentiation, viability, apoptosis, senescence, migration, immunomodulation behaviors, as well as epigenetic changes.
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Affiliation(s)
| | - Aysen Gunel-Ozcan
- Department of Stem Cell Sciences, Center for Stem Cell Research and Development, Hacettepe University, Ankara, Turkey
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Zhang C, Ye W, Zhao M, Xia D, Fan Z. tRNA-derived small RNA changes in bone marrow stem cells under hypoxia and osteogenic conduction. J Oral Rehabil 2023; 50:1487-1497. [PMID: 37574812 DOI: 10.1111/joor.13566] [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: 02/15/2023] [Revised: 04/04/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023]
Abstract
BACKGROUND Tissue engineering using bone mesenchymal stem cells (BMSCs) transplantation is a promising therapeutic for bone regeneration. However, the effect of bone regeneration remains unsatisfactory due to the BMSCs' functional abnormality influenced by hypoxia. In this study, we attempt to explore the mechanism of osteogenic differentiation of BMSCs under hypoxic conditions from the perspective of non-coding RNA regulation. METHODS The study employed BMSCs obtained from healthy donors and simulated hypoxia using CoCl2 stimulation. High-throughput sequencing technique was used to identify differential expression profiles of tRNA-derived small RNA (tsRNA) in three experimental groups: BMSCs-0d, BMSCs-7d and BMSCs-0d-CoCl2 . TargetScan and miRanda algorithms were used to determine tsRNA target genes, while Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analysis were employed for the prediction of biological functions. Real-time reverse transcriptase-polymerase chain reaction (Real-time RT-PCR) was carried out on four selected differentially expressed tsRNAs. RESULTS After the osteogenic induction and CoCl2 stimulated separately, there were 19 tsRNAs differentially expressed in BMSCs, including 14 upregulated and five downregulated. According to the analysis of biological information, these tsRNAs may regulate 311 potential target genes and mainly enrich the pathways such as metabolic pathways, Wnt signalling pathway, osteoclast differentiation, cellular senescence and mTOR signalling pathway. The results of Real-time RT-PCR for 3'tiRNA-41-GlnTTG-6, 3'tiRNA-42-LysTTT-8, 5'tiRNA-35-CysACA-1 and tRF3a-AsnGTT-9 were consistent with small RNA sequencing data. CONCLUSION We discovered the tsRNA that changes the process of osteogenesis and hypoxia, which provides new targets for promoting survival and regeneration functions after BMSCs transplantation.
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Affiliation(s)
- Chen Zhang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
- Department of Dental Emergency, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Weilong Ye
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Mengyao Zhao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Dengsheng Xia
- Department of Dental Emergency, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Zhipeng Fan
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
- Beijing Laboratory of Oral Health, Capital Medical University, Beijing, China
- Research Unit of Tooth Development and Regeneration, Chinese Academy of Medical Sciences, Beijing, China
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An Y, Talwar CS, Park KH, Ahn WC, Lee SJ, Go SR, Cho JH, Kim DY, Kim YS, Cho S, Kim JH, Kim TJ, Woo EJ. Design of hypoxia responsive CRISPR-Cas9 for target gene regulation. Sci Rep 2023; 13:16763. [PMID: 37798384 PMCID: PMC10556097 DOI: 10.1038/s41598-023-43711-9] [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: 03/08/2023] [Accepted: 09/27/2023] [Indexed: 10/07/2023] Open
Abstract
The CRISPR-Cas9 system is a widely used gene-editing tool, offering unprecedented opportunities for treating various diseases. Controlling Cas9/dCas9 activity at specific location and time to avoid undesirable effects is very important. Here, we report a conditionally active CRISPR-Cas9 system that regulates target gene expression upon sensing cellular environmental change. We conjugated the oxygen-sensing transcription activation domain (TAD) of hypoxia-inducing factor (HIF-1α) with the Cas9/dCas9 protein. The Cas9-TAD conjugate significantly increased endogenous target gene cleavage under hypoxic conditions compared with that under normoxic conditions, whereas the dCas9-TAD conjugate upregulated endogenous gene transcription. Furthermore, the conjugate system effectively downregulated the expression of SNAIL, an essential gene in cancer metastasis, and upregulated the expression of the tumour-related genes HNF4 and NEUROD1 under hypoxic conditions. Since hypoxia is closely associated with cancer, the hypoxia-dependent Cas9/dCas9 system is a novel addition to the molecular tool kit that functions in response to cellular signals and has potential application for gene therapeutics.
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Affiliation(s)
- Yan An
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
- Division of Animal, Horticultural and Food Sciences, Graduate School of Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Chandana S Talwar
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
- Department of Bioscience, University of Science and Technology, Daejeon, 305-333, Republic of Korea
| | - Kwang-Hyun Park
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
| | - Woo-Chan Ahn
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
| | - Su-Jin Lee
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
- Department of Bioscience, University of Science and Technology, Daejeon, 305-333, Republic of Korea
| | - Seong-Ryeong Go
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
- Department of Bioscience, University of Science and Technology, Daejeon, 305-333, Republic of Korea
| | - Jin Hwa Cho
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
| | - Do Yon Kim
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
- Department of Bioscience, University of Science and Technology, Daejeon, 305-333, Republic of Korea
| | - Yong-Sam Kim
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
- Department of Bioscience, University of Science and Technology, Daejeon, 305-333, Republic of Korea
| | - Sayeon Cho
- Laboratory of Molecular and Pharmacological Cell Biology, College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Jeong-Hoon Kim
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
- Department of Bioscience, University of Science and Technology, Daejeon, 305-333, Republic of Korea
| | - Tae-Jip Kim
- Division of Animal, Horticultural and Food Sciences, Graduate School of Chungbuk National University, Cheongju, 28644, Republic of Korea.
| | - Eui-Jeon Woo
- Division of Biomedical Research, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea.
- Department of Bioscience, University of Science and Technology, Daejeon, 305-333, Republic of Korea.
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Arfianti A, Ulfah, Hutabarat LS, Agnes Ivana G, Budiarti AD, Sahara NS, Saputra NP. Hipoxia modulates the secretion of growth factors of human umbilical cord-derived mesenchymal stem cells. Biomedicine (Taipei) 2023; 13:49-56. [PMID: 37937056 PMCID: PMC10627211 DOI: 10.37796/2211-8039.1416] [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: 02/05/2023] [Accepted: 03/08/2023] [Indexed: 11/09/2023] Open
Abstract
Background Mesenchymal stem cell (MSC) has great potential as therapies due its ability to regenerate tissue damage and promote tissue homeostasis. Preconditioning of MSC in low oxygen concentration has been shown to affect the therapeutic potential of these cells. This study aimed to compare the characteristic and secretion of trophic factors of MSCs cultured under hypoxia and normoxia. Methods MSCs were isolated from Wharton's jelly of human umbilical cord (UC) tissue by explant method and characterized by flow cytometry. Following 24 h of CoCl2-induced hypoxic culture, the viability and metabolic activity of MSC were analyzed by trypan blue exclusion test and methyl thiazolyl tetrazolium (MTT) assay, respectively. The secretion of hepatocyte growth factor (HGF) and vascular endothelial growth factor (VEGF) was assessed in conditioned medium using enzyme-linked immunosorbent assay (ELISA) method. Results Flow cytometry analysis showed >99% of the population of MSCs cells were positive for CD73 and CD90 and > 62% were positive for CD105. While the cell viability of MSC was not affected by hypoxic cultured condition, the metabolic activity rate of these cells was decreased under hypoxic conditioning. In line with reduced metabolic activity, hypoxic human UC-derived MSC produced less HGF than normoxic counterpart. Compared to normoxic MSC, hypoxic preconditioned MSC secreted higher level of VEGF in the conditioned medium (p < 0.05). Conclusions Hypoxia decreased the metabolic activity of MSCs associated with the modulation of HGF and VEGF secretions. It is suggested that hypoxia may also affect the therapeutic capacity of MSC cells.
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Affiliation(s)
- Arfianti Arfianti
- Department of Medical Biology, Faculty of Medicine, Universitas Riau, Pekanbaru, 28133,
Indonesia
| | - Ulfah
- Department of Anatomy, Faculty of Medicine, Universitas Riau, Pekanbaru, 28133,
Indonesia
| | - Leopold S. Hutabarat
- Undergraduate Program, Faculty of Medicine, Universitas Riau, Pekanbaru, 28133,
Indonesia
| | - G Agnes Ivana
- Undergraduate Program, Faculty of Medicine, Universitas Riau, Pekanbaru, 28133,
Indonesia
| | - Anisa D. Budiarti
- Undergraduate Program, Faculty of Medicine, Universitas Riau, Pekanbaru, 28133,
Indonesia
| | - Nabilla S. Sahara
- LONTAR Laboratory, Faculty of Medicine, Universitas Riau, Pekanbaru, 28133,
Indonesia
| | - Nicko P.K. Saputra
- Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Riau, Pekanbaru, 28133,
Indonesia
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8
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Fang L, Pan XT, Liu K, Jiang D, Ye D, Ji LN, Wang K, Xia XH. Surface-Roughened SERS-Active Single Silver Nanowire for Simultaneous Detection of Intracellular and Extracellular pHs. ACS APPLIED MATERIALS & INTERFACES 2023; 15:20677-20685. [PMID: 37071781 DOI: 10.1021/acsami.3c00844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The simultaneous and accurate detection of intracellular pH (pHi) and extracellular pH (pHe) is essential for studying the complex physiological activities of cancer cells and exploring pH-related therapeutic mechanisms. Here, we developed a super-long silver nanowire-based surface-enhanced Raman scattering (SERS) detection strategy for simultaneous sensing of pHi and pHe. A surface-roughened silver nanowire (AgNW) with a high aspect ratio is prepared at a nanoelectrode tip using a Cu-mediated oxidation process, which is then modified by pH-sensitive 4-mercaptobenzoic acid (4-MBA) to form 4-MBA@AgNW as a pH sensing probe. With the assistance of a 4D microcontroller, 4-MBA@AgNW is efficient in simultaneously detecting pHi and pHe in both 2D and 3D culture cancer cells by SERS, with minimal invasiveness, high sensitivity, and spatial resolution. Further investigation proves that the surface-roughened single AgNW can also be used in monitoring the dynamic variation of pHi and pHe of cancer cells upon stimulation with anticancer drugs or under a hypoxic environment.
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Affiliation(s)
- Leyi Fang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Xiao-Tong Pan
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Kang Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Dechen Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Deju Ye
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Li-Na Ji
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Kang Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Xing-Hua Xia
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
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You J, Liu M, Li M, Zhai S, Quni S, Zhang L, Liu X, Jia K, Zhang Y, Zhou Y. The Role of HIF-1α in Bone Regeneration: A New Direction and Challenge in Bone Tissue Engineering. Int J Mol Sci 2023; 24:ijms24098029. [PMID: 37175732 PMCID: PMC10179302 DOI: 10.3390/ijms24098029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/22/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
The process of repairing significant bone defects requires the recruitment of a considerable number of cells for osteogenesis-related activities, which implies the consumption of a substantial amount of oxygen and nutrients. Therefore, the limited supply of nutrients and oxygen at the defect site is a vital constraint that affects the regenerative effect, which is closely related to the degree of a well-established vascular network. Hypoxia-inducible factor (HIF-1α), which is an essential transcription factor activated in hypoxic environments, plays a vital role in vascular network construction. HIF-1α, which plays a central role in regulating cartilage and bone formation, induces vascular invasion and differentiation of osteoprogenitor cells to promote and maintain extracellular matrix production by mediating the adaptive response of cells to changes in oxygen levels. However, the application of HIF-1α in bone tissue engineering is still controversial. As such, clarifying the function of HIF-1α in regulating the bone regeneration process is one of the urgent issues that need to be addressed. This review provides insight into the mechanisms of HIF-1α action in bone regeneration and related recent advances. It also describes current strategies for applying hypoxia induction and hypoxia mimicry in bone tissue engineering, providing theoretical support for the use of HIF-1α in establishing a novel and feasible bone repair strategy in clinical settings.
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Affiliation(s)
- Jiaqian You
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Manxuan Liu
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Minghui Li
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Shaobo Zhai
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Sezhen Quni
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Lu Zhang
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Xiuyu Liu
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Kewen Jia
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Yidi Zhang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
- School of Stomatology, Jilin University, Changchun 130021, China
| | - Yanmin Zhou
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, China
- School of Stomatology, Jilin University, Changchun 130021, China
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10
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Shifa ul Haq H, Ashfaq R, Mehmood A, Shahid W, Azam G, Azam M, Tasneem S, Akram SJ, Malik K, Riazuddin S. Priming with caffeic acid enhances the potential and survival ability of human adipose-derived stem cells to counteract hypoxia. Regen Ther 2023; 22:115-127. [PMID: 36751276 PMCID: PMC9883200 DOI: 10.1016/j.reth.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/27/2022] [Accepted: 01/04/2023] [Indexed: 01/26/2023] Open
Abstract
The therapeutic effectiveness of stem cells after transplantation is hampered by the hypoxic milieu of chronic wounds. Prior research has established antioxidant priming as a thorough plan to improve stem cell performance. The purpose of this study was to ascertain how caffeic acid (CA) priming affected the ability of human adipose-derived stem cells (hASCs) to function under hypoxic stress. In order to study the cytoprotective properties of CA, hASCs were primed with CA in CoCl2 hypoxic conditions. Microscopy was used to assess cell morphology, while XTT, Trypan Blue, X-gal, LDH, Live Dead, scratch wound healing, and ROS assays were used to analyze viability, senescence, cell death, proliferation, and reactive oxygen species prevalence in the cells. According to our findings, CA priming enhances hASCs' ability to survive and regenerate in a hypoxic microenvironment more effectively than untreated hASCs. Our in-vitro research suggested that pre-treatment with CA of hASCs could be a unique way to enhance their therapeutic efficacy and ability to survive in hypoxic microenvironments.
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Affiliation(s)
- H.M. Shifa ul Haq
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
| | - Ramla Ashfaq
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
- Genome Editing Lab, Food Biotechnology Research Center, Pakistan Council of Scientific and Industrial Research (PCSIR) Laboratory Complex, Lahore, 54600, Pakistan
| | - Azra Mehmood
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
| | - Warda Shahid
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
| | - Ghufran Azam
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
| | - Maryam Azam
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
| | - Saba Tasneem
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
| | | | - Kausar Malik
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
| | - Sheikh Riazuddin
- National Centre of Excellence in Molecular Biology, 87-West Canal Bank Road, University of Punjab, Lahore, 53700, Pakistan
- Jinnah Burn & Reconstructive Surgery Centre, Allama Iqbal Medical College, University of Health Sciences, Lahore, Pakistan
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11
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Semba JA, Mieloch AA, Tomaszewska E, Cywoniuk P, Rybka JD. Formulation and evaluation of a bioink composed of alginate, gelatin, and nanocellulose for meniscal tissue engineering. Int J Bioprint 2022; 9:621. [PMID: 36844246 PMCID: PMC9947383 DOI: 10.18063/ijb.v9i1.621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 08/05/2022] [Indexed: 11/23/2022] Open
Abstract
1The necessity to preserve meniscal function prompts the research and development of novel treatment options, like three-dimensional (3D) bioprinting. However, bioinks for meniscal 3D bioprinting have not been extensively explored. Therefore, in this study, a bioink composed of alginate, gelatin, and carboxymethylated cellulose nanocrystal (CCNC) was formulated and evaluated. Firstly, bioinks with varying concentrations of the aforementioned components were subjected to rheological analysis (amplitude sweep test, temperature sweep test, and rotation). The optimal bioink formulation of 4.0% gelatin, 0.75% alginate, and 1.4% CCNC dissolved in 4.6% D-mannitol was further used for printing accuracy analysis, followed by 3D bioprinting with normal human knee articular chondrocytes (NHAC-kn). The encapsulated cells' viability was > 98%, and collagen II expression was stimulated by the bioink. The formulated bioink is printable, stable under cell culture conditions, biocompatible, and able to maintain the native phenotype of chondrocytes. Aside from meniscal tissue bioprinting, it is believed that this bioink could serve as a basis for the development of bioinks for various tissues.
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Affiliation(s)
- Julia Anna Semba
- Center for Advanced Technology, Adam Mickiewicz University, Poznan, Poland,Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
| | - Adam Aron Mieloch
- Center for Advanced Technology, Adam Mickiewicz University, Poznan, Poland
| | - Ewa Tomaszewska
- Faculty of Mechanical Engineering, Poznan University of Technology, Poznan, Poland
| | - Piotr Cywoniuk
- Center for Advanced Technology, Adam Mickiewicz University, Poznan, Poland
| | - Jakub Dalibor Rybka
- Center for Advanced Technology, Adam Mickiewicz University, Poznan, Poland,Corresponding author: Jakub Dalibor Rybka ()
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12
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Amara R, Zeineh N, Monga S, Weizman A, Gavish M. The Effect of the Classical TSPO Ligand PK 11195 on In Vitro Cobalt Chloride Model of Hypoxia-like Condition in Lung and Brain Cell Lines. Biomolecules 2022; 12:1397. [PMID: 36291606 PMCID: PMC9599342 DOI: 10.3390/biom12101397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 11/18/2022] Open
Abstract
The mitochondrial translocator protein (TSPO) is a modulator of the apoptotic pathway involving reactive oxygen species (ROS) generation, mitochondrial membrane potential (Δψm) collapse, activation of caspases, and eventually initiation of the apoptotic process. In this in vitro study, H1299 lung cells and BV-2 microglial cells were exposed to the hypoxia-like effect of CoCl2 with or without PK 11195. Exposing the H1299 cells to 0.5 mM CoCl2 for 24 h resulted in decreases in cell viability (63%, p < 0.05), elevation of cardiolipin peroxidation levels (38%, p < 0.05), mitochondrial membrane potential depolarization (13%, p < 0.001), and apoptotic cell death (117%, p < 0.05). Pretreatment with PK 11195 (25 µM) exhibited significant protective capacity on CoCl2-induced alterations in the mentioned processes. Exposure of BV-2 cells to increasing concentrations of CoCl2 (0.3, 0.5, 0.7 mM) for 4 h resulted in alterations in the same cellular processes. These alterations were obtained in a dose-dependent manner, except the changes in caspases 3 and 9. The novel ligands as well as PK 1195 attenuated the in vitro hypoxia-like effects of CoCl2. It appears that the TSPO ligand PK 11195 can prevent CoCl2-induced cellular damage in both non-neuronal and brain cell lines, and they may offer a novel approach to the treatment of hypoxia-related lung and brain diseases in some cases that fail to respond to conventional therapies.
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Affiliation(s)
- Rula Amara
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel
| | - Nidal Zeineh
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel
| | - Sheelu Monga
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel
| | - Abraham Weizman
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- Research Unit, Geha Mental Health Center and Felsenstein Medical Research Center, Petah Tikva 4910002, Israel
| | - Moshe Gavish
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel
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13
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Harvey JP, Yu-Wai-Man P, Cheetham ME. Characterisation of a novel OPA1 splice variant resulting in cryptic splice site activation and mitochondrial dysfunction. Eur J Hum Genet 2022; 30:848-855. [PMID: 35534703 PMCID: PMC9259687 DOI: 10.1038/s41431-022-01102-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/01/2022] [Accepted: 04/12/2022] [Indexed: 12/13/2022] Open
Abstract
Autosomal dominant optic atrophy (DOA) is an inherited optic neuropathy that results in progressive, bilateral visual acuity loss and field defects. OPA1 is the causative gene in around 60% of cases of DOA. The majority of patients have a pure ocular phenotype, but 20% have extra-ocular features (DOA +). We report on a patient with DOA + manifesting as bilateral optic atrophy, spastic paraparesis, urinary incontinence and white matter changes in the central nervous system associated with a novel heterozygous splice variant NM_015560.2(OPA1):c.2356-1 G > T. Further characterisation, which was performed using fibroblasts obtained from a skin biopsy, demonstrated that this variant altered mRNA splicing of the OPA1 transcript, specifically a 21 base pair deletion at the start of exon 24, NM_015560.2(OPA1):p.Cys786_Lys792del. The majority of variant transcripts were shown to escape nonsense-mediated decay and modelling of the predicted protein structure suggests that the in-frame 7 amino acid deletion may affect OPA1 oligomerisation. Fibroblasts carrying the c.2356-1 G > T variant demonstrated impaired mitochondrial bioenergetics, membrane potential, increased cell death, and disrupted and fragmented mitochondrial networks in comparison to WT cells. This study suggests that the c.2356-1 G > T OPA1 splice site variant leads to a cryptic splice site activation and may manifest in a dominant-negative manner, which could account for the patient's severe syndromic phenotype.
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Affiliation(s)
- Joshua Paul Harvey
- UCL Institute of Ophthalmology, London, UK.
- Moorfields Eye Hospital NHS Foundation Trust, London, UK.
| | - Patrick Yu-Wai-Man
- UCL Institute of Ophthalmology, London, UK
- Moorfields Eye Hospital NHS Foundation Trust, London, UK
- Cambridge Eye Unit, Addenbrooke's Hospital, Cambridge University Hospitals, Cambridge, UK
- Department of Clinical Neurosciences, John van Geest Centre for Brain Repair and MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
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14
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Abdelrahman SA, Abdelrahman AA, Samy W, Dessouky AA, Ahmed SM. Hypoxia pretreatment enhances the therapeutic potential of mesenchymal stem cells (BMSCs) on ozone-induced lung injury in rats. Cell Tissue Res 2022; 389:201-217. [PMID: 35551479 PMCID: PMC9287250 DOI: 10.1007/s00441-022-03627-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 04/16/2022] [Indexed: 11/26/2022]
Abstract
Ozone (O3) gas is a double-sided weapon. It provides a shield that protects life on earth from the harmful ultraviolet (UV) rays, but ground-level O3 is considered an urban air pollutant. So, a rat model of chronic O3 inhalation was established to assess the biochemical and morphological alterations in the lung tissue and to investigate the ameliorative effects of bone marrow-derived mesenchymal stem cells (BMSCs) with or without hypoxia pre-treatment. Forty-two adult male albino rats were divided into four groups: control, ozone-exposed, normoxic BMSC-treated, and hypoxic BMSC-treated groups. Lung tissue sections were processed for light and electron microscope examination, immunohistochemical staining for caspase 3, and iNOS. Quantitative real-time PCR for IL-1α, IL-17, TNF-α, and Nrf2 mRNA gene expression were also performed. Chronic O3 exposure caused elevated inflammatory cytokines and decreased antioxidant Nrf2 mRNA expression. Marked morphological alterations with increased collagen deposition and elevated apoptotic markers and iNOS were evident. BMSC treatment showed immunomodulatory (decreased inflammatory cytokine gene expression), antioxidant (increased Nrf2 expression and decreased iNOS), and anti-apoptotic (decreased caspase3 expression) effects. Consequently, ameliorated lung morphology with diminished collagen deposition was observed. Hypoxia pretreatment enhanced BMSC survival by MTT assay. It also augmented the previously mentioned effects of BMSCs on the lung tissue as proved by statistical analysis. Lung morphology was similar to that of control group. In conclusion, hypoxia pretreatment represents a valuable intervention to enhance the effects of MSCs on chronic lung injury.
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Affiliation(s)
- Shaimaa A Abdelrahman
- Medical Histology and Cell Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
| | - Abeer A Abdelrahman
- Biochemistry and Molecular Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Walaa Samy
- Biochemistry and Molecular Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Arigue A Dessouky
- Medical Histology and Cell Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Samah M Ahmed
- Medical Histology and Cell Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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15
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Insight in Hypoxia-Mimetic Agents as Potential Tools for Mesenchymal Stem Cell Priming in Regenerative Medicine. Stem Cells Int 2022; 2022:8775591. [PMID: 35378955 PMCID: PMC8976669 DOI: 10.1155/2022/8775591] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 02/28/2022] [Accepted: 03/09/2022] [Indexed: 12/13/2022] Open
Abstract
Hypoxia-mimetic agents are new potential tools in MSC priming instead of hypoxia incubators or chambers. Several pharmaceutical/chemical hypoxia-mimetic agents can be used to induce hypoxia in the tissues: deferoxamine (DFO), dimethyloxaloylglycine (DMOG), 2,4-dinitrophenol (DNP), cobalt chloride (CoCl2), and isoflurane (ISO). Hypoxia-mimetic agents can increase cell proliferation, preserve or enhance differentiation potential, increase migration potential, and induce neovascularization in a concentration- and stem cell source-dependent manner. Moreover, hypoxia-mimetic agents may increase HIF-1α, changing the metabolism and enhancing glycolysis like hypoxia. So, there is clear evidence that treatment with hypoxia-mimetic agents is beneficial in regenerative medicine, preserving stem cell capacities. These agents are not studied so wildly as hypoxia but, considering the low cost and ease of use, are believed to find application as pretreatment of many diseases such as ischemic heart disease and myocardial fibrosis and promote cardiac and cartilage regeneration. The knowledge of MSC priming is critical in evaluating safety procedures and use in clinics. In this review, similarities and differences between hypoxia and hypoxia-mimetic agents in terms of their therapeutic efficiency are considered in detail. The advantages, challenges, and future perspectives in MSC priming with hypoxia mimetic agents are also discussed.
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16
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Sarkar D, Chowdhury M, Das PK. Naphthalimide-Based Azo-Functionalized Supramolecular Vesicle in Hypoxia-Responsive Drug Delivery. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3480-3492. [PMID: 35261245 DOI: 10.1021/acs.langmuir.1c03334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Supramolecular materials that respond to external triggers are being extensively utilized in developing spatiotemporal control in biomedical applications ranging from drug delivery to diagnostics. The present article describes the development of self-assembled vesicles in 1:9 (v/v), tetrahydrofuran (THF)-water by naphthalimide-based azo moiety containing amphiphile (NI-Azo) where azo moiety would act as the stimuli-responsive junction. The self-assembly of NI-Azo took place through H-type of aggregation. Microscopic and spectroscopic analyses confirmed the formation of supramolecular vesicles with a dimension of 200-250 nm. Azo (-N═N-) moiety is known to get reduced to amine derivatives in the presence of the azoreductase enzyme, which is overexpressed in the hypoxic microenvironment. The absorbance intensity of this characteristic azo (-N═N-) moiety of NI-Azo (1:9 (v/v), THF-water) at 458 nm got diminished in the presence of both extracellular and intracellular bacterial azoreductase extracted from Escherichia coli bacteria. The same observation was noted in the presence of sodium dithionite (mimic of azoreductase), indicating that azoreductase/sodium dithionite induced azo bond cleavage of NI-Azo, which was confirmed by matrix-assisted laser desorption ionization time-of-flight spectrometric data of the corresponding aromatic amine fragments. The anticancer drug, curcumin, was encapsulated inside NI-Azo vesicles that successfully killed B16F10 cells (cancer cells) in CoCl2-induced hypoxic environment owing to the azoreductase-responsive release of drug. The cancer cell killing efficiency by curcumin-loaded NI-Azo vesicles in the hypoxic condition was 2.15-fold higher than that of the normoxic environment and 2.4-fold higher compared to that of native curcumin in the hypoxic condition. Notably, cancer cell killing efficiency of curcumin-loaded NI-Azo vesicles was 4.5- and 1.9-fold higher than that of noncancerous NIH3T3 cells in normoxic and hypoxic environments, respectively. Cell killing was found to be primarily through the early apoptotic pathway.
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Affiliation(s)
- Deblina Sarkar
- School of Biological Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Monalisa Chowdhury
- School of Biological Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Prasanta Kumar Das
- School of Biological Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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17
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Okić-Đorđević I, Obradović H, Kukolj T, Petrović A, Mojsilović S, Bugarski D, Jauković A. Dental mesenchymal stromal/stem cells in different microenvironments— implications in regenerative therapy. World J Stem Cells 2021; 13:1863-1880. [PMID: 35069987 PMCID: PMC8727232 DOI: 10.4252/wjsc.v13.i12.1863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/15/2021] [Accepted: 11/25/2021] [Indexed: 02/06/2023] Open
Abstract
Current research data reveal microenvironment as a significant modifier of physical functions, pathologic changes, as well as the therapeutic effects of stem cells. When comparing regeneration potential of various stem cell types used for cytotherapy and tissue engineering, mesenchymal stem cells (MSCs) are currently the most attractive cell source for bone and tooth regeneration due to their differentiation and immunomodulatory potential and lack of ethical issues associated with their use. The microenvironment of donors and recipients selected in cytotherapy plays a crucial role in regenerative potential of transplanted MSCs, indicating interactions of cells with their microenvironment indispensable in MSC-mediated bone and dental regeneration. Since a variety of MSC populations have been procured from different parts of the tooth and tooth-supporting tissues, MSCs of dental origin and their achievements in capacity to reconstitute various dental tissues have gained attention of many research groups over the years. This review discusses recent advances in comparative analyses of dental MSC regeneration potential with regards to their tissue origin and specific microenvironmental conditions, giving additional insight into the current clinical application of these cells.
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Affiliation(s)
- Ivana Okić-Đorđević
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade 11129, Serbia
| | - Hristina Obradović
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade 11129, Serbia
| | - Tamara Kukolj
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade 11129, Serbia
| | - Anđelija Petrović
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade 11129, Serbia
| | - Slavko Mojsilović
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade 11129, Serbia
| | - Diana Bugarski
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade 11129, Serbia
| | - Aleksandra Jauković
- Laboratory for Experimental Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade 11129, Serbia
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18
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Fathi M, Bahmanpour S, Barshidi A, Rasouli H, Karoon Kiani F, Mahmoud Salehi Khesht A, Izadi S, Rashidi B, Kermanpour S, Mokhtarian R, Karpisheh V, Hassannia H, Mohammadi H, Jalili A, Jadidi-Niaragh F. Simultaneous blockade of TIGIT and HIF-1α induces synergistic anti-tumor effect and decreases the growth and development of cancer cells. Int Immunopharmacol 2021; 101:108288. [PMID: 34710844 DOI: 10.1016/j.intimp.2021.108288] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/11/2021] [Accepted: 10/18/2021] [Indexed: 01/19/2023]
Abstract
PURPOSE T-cell immunoglobulin and ITIM domain (TIGIT) is an immune checkpoint that is overexpressed on both immune cells and some cancer cells. TIGIT can alter the anti-tumor responses inside the tumor microenvironment. Hypoxia-inducible factor 1-alpha (HIF-1α) plays a significant role in the TME and involves suppressing the anti-tumor responses. Under hypoxic conditions, HIF-1α can enhance the expression of different immune checkpoints. Accordingly, hypoxic TME and TIGIT overexpression cause cancer development. Thus, we decided to inhibit tumor cell expansion by inhibiting TIGIT and HIF-1α molecules and discovering the relationship between TIGIT and HIF-1α. METHODS In this research, we utilized superparamagnetic iron oxide-based NPs (SPIONs) combined with chitosan lactate (CL) and folic acid (FA) nanoparticles (NPs) loaded with TIGIT-siRNA and HIF-1α- siRNA for suppressing TIGIT and HIF-1α in tumor cells and evaluated the consequences of this treatment strategy on tumor growth, apoptosis, and metastasis. RESULTS The results showed that cancer cells treated with TIGIT and HIF-1α siRNA-loaded SPIONs-CL-FA NPs, strongly suppressed the TIGIT and HIF-1α expression, colony formation ability, angiogenesis, and the growth rate of cancer cells. CONCLUSIONS Present data suggest the combination treatment of TIGIT and HIF-1α as a novel treatment strategy against colorectal and breast cancer, but more researches are required to realize the complete role of TIGIT and HIF-1α inside the TME.
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Affiliation(s)
- Mehrdad Fathi
- Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran; Cancer and Immunology Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran; Department of Immunology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Simin Bahmanpour
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Asal Barshidi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Rasouli
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fariba Karoon Kiani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Sepideh Izadi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bentolhoda Rashidi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shiva Kermanpour
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roya Mokhtarian
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Vahid Karpisheh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Hassannia
- Immunogenetic Research Center, Faculty of Medicine and Amol Faculty of Paramedical Sciences, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hamed Mohammadi
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Ali Jalili
- Cancer and Immunology Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran; Department of Immunology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Farhad Jadidi-Niaragh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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19
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Carano F, Teti G, Ruggeri A, Chiarini F, Giorgetti A, Mazzotti MC, Fais P, Falconi M. Assessment of the structural and functional characteristics of human mesenchymal stem cells associated with a prolonged exposure of morphine. Sci Rep 2021; 11:19248. [PMID: 34584173 PMCID: PMC8478991 DOI: 10.1038/s41598-021-98682-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 09/08/2021] [Indexed: 01/10/2023] Open
Abstract
The discovery of the expression of opioid receptors in the skin and their role in orchestrating the process of tissue repair gave rise to questions regarding the potential effects of clinical morphine treatment in wound healing. Although short term treatment was reported to improve tissue regeneration, in vivo chronic administration was associated to an impairment of the physiological healing process and systemic fibrosis. Human mesenchymal stem cells (hMSCs) play a fundamental role in tissue regeneration. In this regard, acute morphine exposition was recently reported to impact negatively on the functional characteristics of hMSCs, but little is currently known about its long-term effects. To determine how a prolonged treatment could impair their functional characteristics, we exposed hMSCs to increasing morphine concentrations respectively for nine and eighteen days, evaluating in particular the fibrogenic potential exerted by the long-term exposition. Our results showed a time dependent cell viability decline, and conditions compatible with a cellular senescent state. Ultrastructural and protein expression analysis were indicative of increased autophagy, suggesting a relation to a detoxification activity. In addition, the enhanced transcription observed for the genes involved in the synthesis and regulation of type I collagen suggested the possibility that a prolonged morphine treatment might exert its fibrotic potential risk, even involving the hMSCs.
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Affiliation(s)
- Francesco Carano
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy
| | - Gabriella Teti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy
| | - Alessandra Ruggeri
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy
| | - Francesca Chiarini
- CNR-National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, 40136, Bologna, Italy.,IRCCS Istituto Ortopedico Rizzoli, 40136, Bologna, Italy
| | - Arianna Giorgetti
- Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 49, 40126, Bologna, Italy
| | - Maria C Mazzotti
- Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 49, 40126, Bologna, Italy
| | - Paolo Fais
- Department of Medical and Surgical Sciences, University of Bologna, Via Irnerio 49, 40126, Bologna, Italy
| | - Mirella Falconi
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Via Irnerio 48, 40126, Bologna, Italy.
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20
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Ali SS, Noordin L, Bakar RA, Zainalabidin S, Jubri Z, Wan Ahmad WAN. Current Updates on Potential Role of Flavonoids in Hypoxia/Reoxygenation Cardiac Injury Model. Cardiovasc Toxicol 2021; 21:605-618. [PMID: 34114196 DOI: 10.1007/s12012-021-09666-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 06/03/2021] [Indexed: 01/25/2023]
Abstract
Clinically, timely reperfusion strategies to re-establish oxygenated blood flow in ischemic heart diseases seem to salvage viable myocardium effectively. Despite the remarkable improvement in cardiac function, reperfusion therapy could paradoxically trigger hypoxic cellular injury and dysfunction. Experimental laboratory models have been developed over the years to explain better the pathophysiology of cardiac ischemia-reperfusion injury, including the in vitro hypoxia-reoxygenation cardiac injury model. Furthermore, the use of nutritional myocardial conditioning techniques have been successful. The cardioprotective potential of flavonoids have been greatly linked to its anti-oxidant, anti-apoptotic and anti-inflammatory properties. While several studies have reviewed the cardioprotective properties of flavonoids, there is a scarce evidence of their function in the hypoxia-reoxygenation injury cell culture model. Hence, the aim of this review was to lay out and summarize our current understanding of flavonoids' function in mitigating hypoxia-reoxygenation cardiac injury based on evidence from the last five years. We also discussed the possible mechanisms of flavonoids in modulating the cardioprotective effects as such information would provide invaluable insight on future therapeutic application of flavonoids.
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Affiliation(s)
- Shafreena Shaukat Ali
- Programme of Biomedicine, School of Health Sciences (PPSK), Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Liza Noordin
- Department of Physiology, School of Medical Sciences (PPSP), Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Ruzilawati Abu Bakar
- Department of Pharmacology, School of Medical Sciences (PPSP), Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Satirah Zainalabidin
- Programme of Biomedical Science, Faculty of Health Sciences, Center for Toxicology and Health Risk Studies (CORE), Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia
| | - Zakiah Jubri
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, 56000, Kuala Lumpur, Malaysia
| | - Wan Amir Nizam Wan Ahmad
- Programme of Biomedicine, School of Health Sciences (PPSK), Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia.
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21
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Arab‐Ahmadi S, Irani S, Bakhshi H, Atyabi F, Ghalandari B. Immobilization of cobalt‐loaded laponite/carboxymethyl chitosan on polycaprolactone nanofiber for improving osteogenesis and angiogenesis activities. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5438] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Samira Arab‐Ahmadi
- Department of Biology, Science and Research Branch Islamic Azad University Tehran Iran
| | - Shiva Irani
- Department of Biology, Science and Research Branch Islamic Azad University Tehran Iran
| | - Hadi Bakhshi
- Department of Functional Polymer Systems Fraunhofer Institute for Applied Polymer Research IAP Potsdam Germany
| | - Fatemeh Atyabi
- Department of Pharmaceutics, Faculty of Pharmacy Tehran University of Medical Sciences Tehran Iran
- Nanotechnology Research Centre, Faculty of Pharmacy Tehran University of Medical Sciences Tehran Iran
| | - Behafarid Ghalandari
- Department of Medical Nanotechnology, Applied Biophotonics Research Center, Science and Research Branch Islamic Azad University Tehran Iran
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22
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Teti G, Chiarini F, Mazzotti E, Ruggeri A, Carano F, Falconi M. Cellular senescence in vascular wall mesenchymal stromal cells, a possible contribution to the development of aortic aneurysm. Mech Ageing Dev 2021; 197:111515. [PMID: 34062172 DOI: 10.1016/j.mad.2021.111515] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/10/2021] [Accepted: 05/25/2021] [Indexed: 01/10/2023]
Abstract
Cellular senescence is a hallmark of ageing and it plays a key role in the development of age-related diseases. Abdominal aortic aneurysm (AAA) is an age related degenerative vascular disorder, characterized by a progressive dilatation of the vascular wall and high risk of rupture over time. Nowadays, no pharmacological therapies are available and the understanding of the molecular mechanisms that lead to AAA onset and development are poorly defined. In this study we investigated the cellular features of senescence in vascular mesenchymal stromal cells, isolated from pathological (AAA - MSCs) and healthy (h - MSCs) segments of human abdominal aorta and their implication in impairing the vascular repair ability of MSCs. Cell proliferation, ROS production, cell surface area, the expression of cyclin dependent kinase inhibitors p21CIP1 and p16INK4a, the activation of the DNA damage response and a dysregulated autophagy showed a senescent state in AAA - MSCs compared to h-MSCs. Moreover, a reduced ability to differentiate toward endothelial cells was observed in AAA - MSCs. All these data suggest that the accumulation of senescent vascular MSCs over time impairs their remodeling ability during ageing. This condition could support the onset and development of AAA.
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Affiliation(s)
- Gabriella Teti
- Department of Biomedical and Neuromotor Sciences, University di Bologna, Bologna, 40126, Italy.
| | - Francesca Chiarini
- CNR-National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, 40136, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italy
| | - Eleonora Mazzotti
- Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, Teramo, 64100, Italy
| | - Alessandra Ruggeri
- Department of Biomedical and Neuromotor Sciences, University di Bologna, Bologna, 40126, Italy
| | - Francesco Carano
- Department of Biomedical and Neuromotor Sciences, University di Bologna, Bologna, 40126, Italy
| | - Mirella Falconi
- Department of Biomedical and Neuromotor Sciences, University di Bologna, Bologna, 40126, Italy
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23
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Kim H, Kwon S. Dual effects of hypoxia on proliferation and osteogenic differentiation of mouse clonal mesenchymal stem cells. Bioprocess Biosyst Eng 2021; 44:1831-1839. [PMID: 33821326 DOI: 10.1007/s00449-021-02563-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/28/2021] [Indexed: 11/30/2022]
Abstract
Mouse clonal mesenchymal stem cells (mc-MSCs) were cultured on a Cytodex 3 microcarrier in a spinner flask for a suspension culture under hypoxia condition to increase mass productivity. The hypoxia environment was established using 4.0 mM Na2SO3 with 10 μM or 100 µM CoCl2 for 24 h in a low glucose DMEM medium. As a result, the proliferation of mc-MSCs under hypoxic conditions was 1.56 times faster than the control group over 7 days. The gene expression of HIF-1a and VEGFA increased 4.62 fold and 2.07 fold, respectively. Furthermore, the gene expression of ALP, RUNX2, COL1A, and osteocalcin increased significantly by 9.55, 1.55, 2.29, and 2.53 times, respectively. In contrast, the expression of adipogenic differentiation markers, such as PPAR-γ and FABP4, decreased. These results show that the hypoxia environment produced by these chemicals in a suspension culture increases the proliferation of mc-MSCs and promotes the osteogenic differentiation of mc-MSCs.
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Affiliation(s)
- Hyoungki Kim
- Department of Biological Engineering, Inha University, Incheon, 22212, Korea.,Department of Biological Sciences and Biongineering, Inha University, Incheon, 22212, Korea
| | - Soonjo Kwon
- Department of Biological Engineering, Inha University, Incheon, 22212, Korea. .,Department of Biological Sciences and Biongineering, Inha University, Incheon, 22212, Korea.
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24
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Li J, Liu Y, Zhang Y, Yao B, Enhejirigala, Li Z, Song W, Wang Y, Duan X, Yuan X, Fu X, Huang S. Biophysical and Biochemical Cues of Biomaterials Guide Mesenchymal Stem Cell Behaviors. Front Cell Dev Biol 2021; 9:640388. [PMID: 33842464 PMCID: PMC8027358 DOI: 10.3389/fcell.2021.640388] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/09/2021] [Indexed: 12/14/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have been widely used in the fields of tissue engineering and regenerative medicine due to their self-renewal capabilities and multipotential differentiation assurance. However, capitalizing on specific factors to precisely guide MSC behaviors is the cornerstone of biomedical applications. Fortunately, several key biophysical and biochemical cues of biomaterials that can synergistically regulate cell behavior have paved the way for the development of cell-instructive biomaterials that serve as delivery vehicles for promoting MSC application prospects. Therefore, the identification of these cues in guiding MSC behavior, including cell migration, proliferation, and differentiation, may be of particular importance for better clinical performance. This review focuses on providing a comprehensive and systematic understanding of biophysical and biochemical cues, as well as the strategic engineering of these signals in current scaffold designs, and we believe that integrating biophysical and biochemical cues in next-generation biomaterials would potentially help functionally regulate MSCs for diverse applications in regenerative medicine and cell therapy in the future.
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Affiliation(s)
- Jianjun Li
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- Department of General Surgery, The Sixth Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Yufan Liu
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
| | - Yijie Zhang
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
| | - Bin Yao
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- The Shenzhen Key Laboratory of Health Sciences and Technology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Enhejirigala
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- College of Graduate, Tianjin Medical University, Tianjin, China
- Institute of Basic Medical Research, Inner Mongolia Medical University, Hohhot, China
| | - Zhao Li
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
| | - Wei Song
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
| | - Yuzhen Wang
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- Department of Burn and Plastic Surgery, Air Force Hospital of Chinese PLA Central Theater Command, Datong, China
| | - Xianlan Duan
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- School of Medicine, Nankai University, Tianjin, China
| | - Xingyu Yuan
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- School of Medicine, Nankai University, Tianjin, China
| | - Xiaobing Fu
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, Chinese PLA General Hospital, PLA Medical College, Beijing, China
- Research Unit of Trauma Care, Tissue Repair and Regeneration, Chinese Academy of Medical Sciences, Beijing, China
| | - Sha Huang
- Research Center for Tissue Repair and Regeneration, Medical Innovation Research Department and the Fourth Medical Center, Chinese PLA General Hospital, PLA Medical College, Beijing, China
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25
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Yeoh YQ, Horsley JR, Polyak SW, Abell AD. A hypoxia-activated antibacterial prodrug. Bioorg Med Chem Lett 2020; 30:127140. [PMID: 32247730 DOI: 10.1016/j.bmcl.2020.127140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 03/20/2020] [Accepted: 03/24/2020] [Indexed: 12/12/2022]
Abstract
A prodrug based on a known antibacterial compound is reported to target Staphylococcus aureus and Escherichia coli under reductive conditions. The prodrug was prepared by masking the N-terminus and side chain amines of a component lysine residue as 4-nitrobenzyl carbamates. Activation to liberate the antibacterial was demonstrated on treatment with a model reductant, tin(II) chloride. The bioactivity of 1 was confirmed in antibacterial susceptibility assays whereas prodrug 2 was inactive.
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Affiliation(s)
- Yuan Qi Yeoh
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Department of Chemistry, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia
| | - John R Horsley
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Department of Chemistry, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia
| | - Steven W Polyak
- School of Biological Sciences, Department of Molecular and Cellular Biology, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia.
| | - Andrew D Abell
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Department of Chemistry, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia.
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26
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Wagatsuma A, Arakawa M, Matsumoto H, Matsuda R, Hoshino T, Mabuchi K. Cobalt chloride, a chemical hypoxia-mimicking agent, suppresses myoblast differentiation by downregulating myogenin expression. Mol Cell Biochem 2020; 470:199-214. [PMID: 32451753 DOI: 10.1007/s11010-020-03762-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 05/16/2020] [Indexed: 12/17/2022]
Abstract
Cobalt chloride can create hypoxia-like state in vitro (referred to as chemical hypoxia). Several studies have suggested that chemical hypoxia may cause deleterious effects on myogenesis. The intrinsic underlying mechanisms of myoblast differentiation, however, are not fully understood. Here, we show that cobalt chloride strongly suppresses myoblast differentiation in a dose-dependent manner. The impaired myoblast differentiation is accompanied by downregulation of myogenic regulatory factor myogenin. Under chemical hypoxia, myogenin stability is decreased at mRNA and protein levels. A muscle-specific E3 ubiquitin ligase MAFbx, which can target myogenin protein for proteasomal degradation, is upregulated along with changes in Akt/Foxo and AMPK/Foxo signaling pathways. A proteasome inhibitor completely prevents cobalt chloride-mediated decrease in myogenin protein. These results suggest that cobalt chloride might modulate myogenin expression at post-transcriptional and post-translational levels, resulting in the failure of the myoblasts to differentiate into myotubes.
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Affiliation(s)
- Akira Wagatsuma
- Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan.
- Department of Communication, Tokyo Women's Christian University, Tokyo, Japan.
| | - Masayuki Arakawa
- Institute of Microbial Chemistry, Biology Division, Laboratory of Virology, Tokyo, Japan
| | - Hanano Matsumoto
- Department of Food and Health Science, Faculty of Human Life Sciences, Jissen Women's University, Tokyo, Japan
| | - Ryoichi Matsuda
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Takayuki Hoshino
- Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Kunihiko Mabuchi
- Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan
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27
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Taheem DK, Jell G, Gentleman E. Hypoxia Inducible Factor-1α in Osteochondral Tissue Engineering. TISSUE ENGINEERING. PART B, REVIEWS 2020; 26:105-115. [PMID: 31774026 PMCID: PMC7166133 DOI: 10.1089/ten.teb.2019.0283] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 11/19/2019] [Indexed: 12/19/2022]
Abstract
Damage to osteochondral (OC) tissues can lead to pain, loss of motility, and progress to osteoarthritis. Tissue engineering approaches offer the possibility of replacing damaged tissues and restoring joint function; however, replicating the spatial and functional heterogeneity of native OC tissue remains a pressing challenge. Chondrocytes in healthy cartilage exist in relatively low-oxygen conditions, while osteoblasts in the underlying bone experience higher oxygen pressures. Such oxygen gradients also exist in the limb bud, where they influence OC tissue development. The cellular response to these spatial variations in oxygen pressure, which is mediated by the hypoxia inducible factor (HIF) pathway, plays a central role in regulating osteo- and chondrogenesis by directing progenitor cell differentiation and promoting and maintaining appropriate extracellular matrix production. Understanding the role of the HIF pathway in OC tissue development may enable new approaches to engineer OC tissue. In this review, we discuss strategies to spatially and temporarily regulate the HIF pathway in progenitor cells to create functional OC tissue for regenerative therapies. Impact statement Strategies to engineer osteochondral (OC) tissue are limited by the complex and varying microenvironmental conditions in native bone and cartilage. Indeed, native cartilage experiences low-oxygen conditions, while the underlying bone is relatively normoxic. The cellular response to these low-oxygen conditions, which is mediated through the hypoxia inducible factor (HIF) pathway, is known to promote and maintain the chondrocyte phenotype. By using tissue engineering scaffolds to spatially and temporally harness the HIF pathway, it may be possible to improve OC tissue engineering strategies for the regeneration of damaged cartilage and its underlying subchondral bone.
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Affiliation(s)
- Dheraj K. Taheem
- Centre for Craniofacial and Regenerative Biology, King's College London, London, United Kingdom
| | - Gavin Jell
- Division of Surgery and Interventional Sciences, University College London, London, United Kingdom
| | - Eileen Gentleman
- Centre for Craniofacial and Regenerative Biology, King's College London, London, United Kingdom
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28
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Mazzotti E, Teti G, Falconi M, Chiarini F, Barboni B, Mazzotti A, Muttini A. Age-Related Alterations Affecting the Chondrogenic Differentiation of Synovial Fluid Mesenchymal Stromal Cells in an Equine Model. Cells 2019; 8:cells8101116. [PMID: 31547126 PMCID: PMC6829538 DOI: 10.3390/cells8101116] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 09/14/2019] [Accepted: 09/16/2019] [Indexed: 02/08/2023] Open
Abstract
Osteoarthritis is a degenerative disease that strongly correlates with age and promotes the breakdown of joint cartilage and subchondral bone. There has been a surge of interest in developing cell-based therapies, focused particularly on the use of mesenchymal stromal cells (MSCs) isolated from adult tissues. It seems that MSCs derived from synovial joint tissues exhibit superior chondrogenic ability, but their unclear distribution and low frequency actually limit their clinical application. To date, the influence of aging on synovial joint derived MSCs’ biological characteristics and differentiation abilities remains unknown, and a full understanding of the mechanisms involved in cellular aging is lacking. The aim of this study was therefore to investigate the presence of age-related alterations in synovial fluid MSCs and their influence on the potential ability of MSCs to differentiate toward chondrogenic phenotypes. Synovial fluid MSCs, isolated from healthy equine donors from 3 to 40 years old, were cultured in vitro and stimulated towards chondrogenic differentiation for up to 21 days. An equine model was chosen due to the high degree of similarity of the anatomy of the knee joint to the human knee joint and as spontaneous disorders develop that are clinically relevant to similar human disorders. The results showed a reduction in cell proliferation correlated with age and the presence of age-related tetraploid cells. Ultrastructural analysis demonstrated the presence of morphological features correlated with aging such as endoplasmic reticulum stress, autophagy, and mitophagy. Alcian blue assay and real-time PCR data showed a reduction of efficiency in the chondrogenic differentiation of aged synovial fluid MSCs compared to young MSCs. All these data highlighted the influence of aging on MSCs’ characteristics and ability to differentiate towards chondrogenic differentiation and emphasize the importance of considering age-related alterations of MSCs in clinical applications.
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Affiliation(s)
- Eleonora Mazzotti
- Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy.
| | - Gabriella Teti
- Department of Biomedical and Neuromotor Sciences, University di Bologna, 40126 Bologna, Italy.
| | - Mirella Falconi
- Department of Biomedical and Neuromotor Sciences, University di Bologna, 40126 Bologna, Italy.
| | - Francesca Chiarini
- CNR-National Research Council of Italy, Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, 40136 Bologna, Italy.
- IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy.
| | - Barbara Barboni
- Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy.
| | - Antonio Mazzotti
- st Orthopedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136 Bologna, Italy.
| | - Aurelio Muttini
- Faculty of Bioscience and Agro-Food and Environmental Technology, University of Teramo, 64100 Teramo, Italy.
- Stem TeCh Group, 66100 Chieti, Italy.
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29
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Smith CJ, Perfetti TA. In vitro cobalt-stimulated hypoxia-inducible factor-1 overexpression does not correlate with cancer risk from cobalt exposure in humans. TOXICOLOGY RESEARCH AND APPLICATION 2019. [DOI: 10.1177/2397847319850167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Carr J Smith
- Albemarle Corporation, Mobile, AL, USA
- Department of Nurse Anesthesia, Florida State University, Tallahassee, FL, USA
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30
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Wang YL, Wang LZ, Sun JD, Li XR, Wang Z, Sun LR. [Effect of ultraviolet irradiation on the proliferation of acute promyelocytic leukemia cells under hypoxic conditions and related mechanisms]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2019; 21:491-496. [PMID: 31104669 PMCID: PMC7389421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 03/26/2019] [Indexed: 11/12/2023]
Abstract
OBJECTIVE To study the effect of 280 nm-LED ultraviolet irradiation on the proliferation of acute promyelocytic leukemia (APL) HL-60 cells under hypoxic conditions and related mechanism. METHODS HL-60 cells in the logarithmic growth phase were selected and divided into control, hypoxia, ultraviolet and hypoxia+ultraviolet groups. The cells in the hypoxia group were treated with cobalt chloride (with a final concentration of 150 μmol/L), those in the ultraviolet group were irradiated by 280 nm-LED ultraviolet with an energy intensity of 30 J/m2, and those in the hypoxia+ultraviolet group were treated with cobalt chloride and then irradiated by 280 nm-LED ultraviolet. After 48 hours of treatment, the cells were placed under an invert microscope to observe cell morphology. CCK-8 assay was used to measure the inhibition rate of cell proliferation. Annexin V-FITC/PI double staining flow cytometry was used to evaluate cell apoptosis. Quantitative real-time PCR was used to measure the mRNA expression of Bcl-2. Each experiment above was repeated three times independently. RESULTS Compared with the control group, the experimental groups showed shrinkage, decreased brightness, and disordered arrangement of cells, and the number of cells decreased over the time of culture. There were significant differences in the inhibition rate of cell proliferation and cell apoptosis rate among the groups (P<0.01), and the hypoxia+ultraviolet group showed the strongest inhibition of cell proliferation and induction of cell apoptosis, followed by the ultraviolet group and the hypoxia group. Compared with the control group, the other three groups had a gradual reduction in the mRNA expression of Bcl-2, and the hypoxia+ultraviolet group had a significantly greater reduction than the hypoxia and ultraviolet groups (P<0.01). CONCLUSIONS Both hypoxia and ultraviolet irradiation can inhibit the proliferation of HL-60 cells and induce cell apoptosis, and ultraviolet irradiation has a better effect on proliferation inhibition and cell apoptosis under hypoxic conditions than under normoxic conditions, possibly by downregulating the mRNA expression of Bcl-2.
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Affiliation(s)
- Yi-Lin Wang
- Department of Pediatrics, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China.
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31
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Chen Y, Zhao Q, Yang X, Yu X, Yu D, Zhao W. Effects of cobalt chloride on the stem cell marker expression and osteogenic differentiation of stem cells from human exfoliated deciduous teeth. Cell Stress Chaperones 2019; 24:527-538. [PMID: 30806897 PMCID: PMC6527733 DOI: 10.1007/s12192-019-00981-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 01/23/2019] [Accepted: 02/07/2019] [Indexed: 12/19/2022] Open
Abstract
Stem cells from human exfoliated deciduous teeth (SHEDs) are a promising source for tissue engineering and stem cell transplantation. However, long-term in vitro culture and expansion lead to the loss of stemness of SHEDs, compromising their therapeutic benefits. Hypoxia plays an essential role in controlling the stem cell behavior of mesenchymal stem cells (MSCs). Thus, this study aimed to investigate the effects of cobalt chloride (CoCl2), a hypoxia-mimetic agent, on the stem cell marker expression and osteogenic differentiation of SHEDs. SHEDs were cultured with or without 50 or 100 μM CoCl2. Their proliferation, apoptosis, stem cell marker expression, migration ability, and osteogenic differentiation were examined. Culture with 50 and 100 μM CoCl2 increased the hypoxia-inducible factor-1 alpha (HIF-1α) protein levels in a dose-dependent manner in SHEDs without inducing significant cytotoxicity. This effect was accompanied by an increase in the proportion of STRO-1+ cells. CoCl2 significantly increased the expression of stem cell markers (OCT4, NANOG, SOX2, and c-Myc) in a dose-dependent manner. The migration ability was also promoted by CoCl2 treatment. Furthermore, SHEDs cultured in osteogenic medium with CoCl2 showed a dose-dependent reduction in alkaline phosphatase (ALP) activity and calcium deposition. The expression of osteogenic-related genes was also suppressed by CoCl2, especially in the 100-μM CoCl2 group. In conclusion, CoCl2 increased the expression of stem cell markers and inhibited the osteogenic differentiation of SHEDs. These findings may provide evidence supporting the use of in vitro hypoxic environments mimicked by CoCl2 in assisting the clinical application of SHEDs.
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Affiliation(s)
- Yijing Chen
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No. 56 Lingyuan West Road, Guangzhou, 510055, China
| | - Qi Zhao
- Xianning Central Hospital, The First Affiliated Hospital Of Hubei University of Science and Technology, Xianning, 437000, China
| | - Xin Yang
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No. 56 Lingyuan West Road, Guangzhou, 510055, China
| | - Xinlin Yu
- International Department, The Affiliated High School of SCNU, Guangzhou, 510630, China
| | - Dongsheng Yu
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No. 56 Lingyuan West Road, Guangzhou, 510055, China.
| | - Wei Zhao
- Guanghua School of Stomatology, Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, No. 56 Lingyuan West Road, Guangzhou, 510055, China.
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32
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Wang YL, Wang LZ, Sun JD, Li XR, Wang Z, Sun LR. [Effect of ultraviolet irradiation on the proliferation of acute promyelocytic leukemia cells under hypoxic conditions and related mechanisms]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2019; 21:491-496. [PMID: 31104669 PMCID: PMC7389421 DOI: 10.7499/j.issn.1008-8830.2019.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To study the effect of 280 nm-LED ultraviolet irradiation on the proliferation of acute promyelocytic leukemia (APL) HL-60 cells under hypoxic conditions and related mechanism. METHODS HL-60 cells in the logarithmic growth phase were selected and divided into control, hypoxia, ultraviolet and hypoxia+ultraviolet groups. The cells in the hypoxia group were treated with cobalt chloride (with a final concentration of 150 μmol/L), those in the ultraviolet group were irradiated by 280 nm-LED ultraviolet with an energy intensity of 30 J/m2, and those in the hypoxia+ultraviolet group were treated with cobalt chloride and then irradiated by 280 nm-LED ultraviolet. After 48 hours of treatment, the cells were placed under an invert microscope to observe cell morphology. CCK-8 assay was used to measure the inhibition rate of cell proliferation. Annexin V-FITC/PI double staining flow cytometry was used to evaluate cell apoptosis. Quantitative real-time PCR was used to measure the mRNA expression of Bcl-2. Each experiment above was repeated three times independently. RESULTS Compared with the control group, the experimental groups showed shrinkage, decreased brightness, and disordered arrangement of cells, and the number of cells decreased over the time of culture. There were significant differences in the inhibition rate of cell proliferation and cell apoptosis rate among the groups (P<0.01), and the hypoxia+ultraviolet group showed the strongest inhibition of cell proliferation and induction of cell apoptosis, followed by the ultraviolet group and the hypoxia group. Compared with the control group, the other three groups had a gradual reduction in the mRNA expression of Bcl-2, and the hypoxia+ultraviolet group had a significantly greater reduction than the hypoxia and ultraviolet groups (P<0.01). CONCLUSIONS Both hypoxia and ultraviolet irradiation can inhibit the proliferation of HL-60 cells and induce cell apoptosis, and ultraviolet irradiation has a better effect on proliferation inhibition and cell apoptosis under hypoxic conditions than under normoxic conditions, possibly by downregulating the mRNA expression of Bcl-2.
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Affiliation(s)
- Yi-Lin Wang
- Department of Pediatrics, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, China.
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Effect of 177Lu-iPSMA on viability and DNA damage of human glioma cells subjected to hypoxia-mimetic conditions. Appl Radiat Isot 2019; 146:24-28. [PMID: 30743222 DOI: 10.1016/j.apradiso.2019.01.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/24/2019] [Accepted: 01/24/2019] [Indexed: 01/22/2023]
Abstract
The therapeutic potential of 177Lu-iPSMA on hypoxic cancer cells has not been yet demonstrated. The aim of this work was to evaluate the radiation dose effect of 177Lu-iPSMA on viability and DNA damage in U87MG human glioma cells subjected to hypoxia-mimetic conditions. U87MG cells treated with 177Lu-iPSMA were incubated with CoCl2 in order to induce hypoxia-mimetic conditions. The cytotoxic and genotoxic effect was evaluated with an in vitro viability test and a neutral comet assay. 177Lu-iPSMA decreased the cell viability and induced DNA double strand breaks in U87MG human glioma cells under hypoxia-mimetic conditions. 177Lu-iPSMA produced the maximum effect at 48 h, suggesting that this radiopharmaceutical could be used as a strategy for the treatment of human glioma hypoxic cells.
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Pattappa G, Johnstone B, Zellner J, Docheva D, Angele P. The Importance of Physioxia in Mesenchymal Stem Cell Chondrogenesis and the Mechanisms Controlling Its Response. Int J Mol Sci 2019; 20:E484. [PMID: 30678074 PMCID: PMC6387316 DOI: 10.3390/ijms20030484] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/18/2019] [Accepted: 01/21/2019] [Indexed: 12/12/2022] Open
Abstract
Articular cartilage covers the surface of synovial joints and enables joint movement. However, it is susceptible to progressive degeneration with age that can be accelerated by either previous joint injury or meniscectomy. This degenerative disease is known as osteoarthritis (OA) and it greatly affects the adult population. Cell-based tissue engineering provides a possible solution for treating OA at its earliest stages, particularly focal cartilage lesions. A candidate cell type for treating these focal defects are Mesenchymal Stem Cells (MSCs). However, present methods for differentiating these cells towards the chondrogenic lineage lead to hypertrophic chondrocytes and bone formation in vivo. Environmental stimuli that can stabilise the articular chondrocyte phenotype without compromising tissue formation have been extensively investigated. One factor that has generated intensive investigation in MSC chondrogenesis is low oxygen tension or physioxia (2⁻5% oxygen). In vivo articular cartilage resides at oxygen tensions between 1⁻4%, and in vitro results suggest that these conditions are beneficial for MSC expansion and chondrogenesis, particularly in suppressing the cartilage hypertrophy. This review will summarise the current literature regarding the effects of physioxia on MSC chondrogenesis with an emphasis on the pathways that control tissue formation and cartilage hypertrophy.
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Affiliation(s)
- Girish Pattappa
- Laboratory of Experimental Trauma Surgery, Department of Trauma Surgery, University Hospital Regensburg, Franz Josef Strauss Allee 11, 93053 Regensburg, Germany.
| | - Brian Johnstone
- Department of Orthopaedics and Rehabilitation, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA.
| | - Johannes Zellner
- Laboratory of Experimental Trauma Surgery, Department of Trauma Surgery, University Hospital Regensburg, Franz Josef Strauss Allee 11, 93053 Regensburg, Germany.
| | - Denitsa Docheva
- Laboratory of Experimental Trauma Surgery, Department of Trauma Surgery, University Hospital Regensburg, Franz Josef Strauss Allee 11, 93053 Regensburg, Germany.
| | - Peter Angele
- Laboratory of Experimental Trauma Surgery, Department of Trauma Surgery, University Hospital Regensburg, Franz Josef Strauss Allee 11, 93053 Regensburg, Germany.
- Sporthopaedicum Regensburg, Hildegard von Bingen Strasse 1, 93053 Regensburg, Germany.
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Bahsoun S, Coopman K, Forsyth NR, Akam EC. The Role of Dissolved Oxygen Levels on Human Mesenchymal Stem Cell Culture Success, Regulatory Compliance, and Therapeutic Potential. Stem Cells Dev 2018; 27:1303-1321. [DOI: 10.1089/scd.2017.0291] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Soukaina Bahsoun
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom
| | - Karen Coopman
- Centre for Biological Engineering, Loughborough University, Loughborough, United Kingdom
| | - Nicholas R. Forsyth
- Guy Hilton Research Centre, Institute for Science and Technology in Medicine, Keele University, Keele, United Kingdom
| | - Elizabeth C. Akam
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom
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