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Huerta CT, Voza FA, Ortiz YY, Liu ZJ, Velazquez OC. Mesenchymal stem cell-based therapy for non-healing wounds due to chronic limb-threatening ischemia: A review of preclinical and clinical studies. Front Cardiovasc Med 2023; 10:1113982. [PMID: 36818343 PMCID: PMC9930203 DOI: 10.3389/fcvm.2023.1113982] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/12/2023] [Indexed: 02/04/2023] Open
Abstract
Progressive peripheral arterial disease (PAD) can result in chronic limb-threatening ischemia (CLTI) characterized by clinical complications including rest pain, gangrene and tissue loss. These complications can propagate even more precipitously in the setting of common concomitant diseases in patients with CLTI such as diabetes mellitus (DM). CLTI ulcers are cutaneous, non-healing wounds that persist due to the reduced perfusion and dysfunctional neovascularization associated with severe PAD. Existing therapies for CLTI are primarily limited to anatomic revascularization and medical management of contributing factors such as atherosclerosis and glycemic control. However, many patients fail these treatment strategies and are considered "no-option," thereby requiring extremity amputation, particularly if non-healing wounds become infected or fulminant gangrene develops. Given the high economic burden imposed on patients, decreased quality of life, and poor survival of no-option CLTI patients, regenerative therapies aimed at neovascularization to improve wound healing and limb salvage hold significant promise. Cell-based therapy, specifically utilizing mesenchymal stem/stromal cells (MSCs), is one such regenerative strategy to stimulate therapeutic angiogenesis and tissue regeneration. Although previous reviews have focused primarily on revascularization outcomes after MSC treatments of CLTI with less attention given to their effects on wound healing, here we review advances in pre-clinical and clinical studies related to specific effects of MSC-based therapeutics upon ischemic non-healing wounds associated with CLTI.
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Affiliation(s)
- Carlos Theodore Huerta
- DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Francesca A. Voza
- DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Yulexi Y. Ortiz
- DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Zhao-Jun Liu
- DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States,Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL, United States,*Correspondence: Omaida C. Velazquez, ; Zhao-Jun Liu,
| | - Omaida C. Velazquez
- DeWitt Daughtry Family Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, United States,Vascular Biology Institute, University of Miami Miller School of Medicine, Miami, FL, United States,*Correspondence: Omaida C. Velazquez, ; Zhao-Jun Liu,
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2
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Mesenchymal Stem/Stromal Cells in Three-Dimensional Cell Culture: Ion Homeostasis and Ouabain-Induced Apoptosis. Biomedicines 2023; 11:biomedicines11020301. [PMID: 36830836 PMCID: PMC9953635 DOI: 10.3390/biomedicines11020301] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/24/2023] Open
Abstract
This study describes the changes in ion homeostasis of human endometrial mesenchymal stem/stromal cells (eMSCs) during the formation of three-dimensional (3D) cell structures (spheroids) and investigates the conditions for apoptosis induction in 3D eMSCs. Detached from the monolayer culture, (2D) eMSCs accumulate Na+ and have dissipated transmembrane ion gradients, while in compact spheroids, eMSCs restore the lower Na+ content and the high K/Na ratio characteristic of functionally active cells. Organized as spheroids, eMSCs are non-proliferating cells with an active Na/K pump and a lower K+ content per g cell protein, which is typical for quiescent cells and a mean lower water content (lower hydration) in 3D eMSCs. Further, eMSCs in spheroids were used to evaluate the role of K+ depletion and cellular signaling context in the induction of apoptosis. In both 2D and 3D eMSCs, treatment with ouabain (1 µM) results in inhibition of pump-mediated K+ uptake and severe K+ depletion as well as disruption of the mitochondrial membrane potential. In 3D eMSCs (but not in 2D eMSCs), ouabain initiates apoptosis via the mitochondrial pathway. It is concluded that, when blocking the Na/K pump, cardiac glycosides prime mitochondria to apoptosis, and whether a cell enters the apoptotic pathway depends on the cell-specific signaling context, which includes the type of apoptotic protein expressed.
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Pellegrini S, Zamarian V, Sordi V. Strategies to Improve the Safety of iPSC-Derived β Cells for β Cell Replacement in Diabetes. Transpl Int 2022; 35:10575. [PMID: 36090777 PMCID: PMC9448870 DOI: 10.3389/ti.2022.10575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/11/2022] [Indexed: 11/13/2022]
Abstract
Allogeneic islet transplantation allows for the re-establishment of glycemic control with the possibility of insulin independence, but is severely limited by the scarcity of organ donors. However, a new source of insulin-producing cells could enable the widespread use of cell therapy for diabetes treatment. Recent breakthroughs in stem cell biology, particularly pluripotent stem cell (PSC) techniques, have highlighted the therapeutic potential of stem cells in regenerative medicine. An understanding of the stages that regulate β cell development has led to the establishment of protocols for PSC differentiation into β cells, and PSC-derived β cells are appearing in the first pioneering clinical trials. However, the safety of the final product prior to implantation remains crucial. Although PSC differentiate into functional β cells in vitro, not all cells complete differentiation, and a fraction remain undifferentiated and at risk of teratoma formation upon transplantation. A single case of stem cell-derived tumors may set the field back years. Thus, this review discusses four approaches to increase the safety of PSC-derived β cells: reprogramming of somatic cells into induced PSC, selection of pure differentiated pancreatic cells, depletion of contaminant PSC in the final cell product, and control or destruction of tumorigenic cells with engineered suicide genes.
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4
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Monovalent ions and stress-induced senescence in human mesenchymal endometrial stem/stromal cells. Sci Rep 2022; 12:11194. [PMID: 35778548 PMCID: PMC9249837 DOI: 10.1038/s41598-022-15490-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 06/24/2022] [Indexed: 01/10/2023] Open
Abstract
Monovalent ions are involved in growth, proliferation, differentiation of cells as well as in their death. This work concerns the ion homeostasis during senescence induction in human mesenchymal endometrium stem/stromal cells (hMESCs): hMESCs subjected to oxidative stress (sublethal pulse of H2O2) enter the premature senescence accompanied by persistent DNA damage, irreversible cell cycle arrest, increased expression of the cell cycle inhibitors (p53, p21) cell hypertrophy, enhanced β-galactosidase activity. Using flame photometry to estimate K+, Na+ content and Rb+ (K+) fluxes we found that during the senescence development in stress-induced hMESCs, Na+/K+pump-mediated K+ fluxes are enhanced due to the increased Na+ content in senescent cells, while ouabain-resistant K+ fluxes remain unchanged. Senescence progression is accompanied by a peculiar decrease in the K+ content in cells from 800-900 to 500-600 µmol/g. Since cardiac glycosides are offered as selective agents for eliminating senescent cells, we investigated the effect of ouabain on ion homeostasis and viability of hMESCs and found that in both proliferating and senescent hMESCs, ouabain (1 nM-1 µM) inhibited pump-mediated K+ transport (ID50 5 × 10-8 M), decreased cell K+/Na+ ratio to 0.1-0.2, however did not induce apoptosis. Comparison of the effect of ouabain on hMESCs with the literature data on the selective cytotoxic effect of cardiac glycosides on senescent or cancer cells suggests the ion pump blockade and intracellular K+ depletion should be synergized with target apoptotic signal to induce the cell death.
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5
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Zhong C, Liu M, Pan X, Zhu H. Tumorigenicity Risk of iPSCs in vivo: Nip it in the Bud. PRECISION CLINICAL MEDICINE 2022; 5:pbac004. [PMID: 35692443 PMCID: PMC9026204 DOI: 10.1093/pcmedi/pbac004] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/18/2022] [Accepted: 01/23/2022] [Indexed: 11/17/2022] Open
Abstract
In 2006, Takahashi and Yamanaka first created induced pluripotent stem cells from mouse fibroblasts via the retroviral introduction of genes encoding the transcription factors Oct3/4, Sox2, Klf44, and c-Myc. Since then, the future clinical application of somatic cell reprogramming technology has become an attractive research topic in the field of regenerative medicine. Of note, considerable interest has been placed in circumventing ethical issues linked to embryonic stem cell research. However, tumorigenicity, immunogenicity, and heterogeneity may hamper attempts to deploy this technology therapeutically. This review highlights the progress aimed at reducing induced pluripotent stem cells tumorigenicity risk and how to assess the safety of induced pluripotent stem cells cell therapy products.
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Affiliation(s)
- Chaoliang Zhong
- Department of Cell Biology, Naval Medical University, Shanghai, China
| | - Miao Liu
- Department of Cell Biology, Naval Medical University, Shanghai, China
| | - Xinghua Pan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, and Guangdong Provincial Key Laboratory of Single Cell Technology and Application, Southern Medical University, Guangzhou, Guangdong, China
- Shenzhen Bay Laboratory, Shenzhen 518032, Guangdong, China
| | - Haiying Zhu
- Department of Cell Biology, Naval Medical University, Shanghai, China
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6
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Wuputra K, Ku CC, Wu DC, Lin YC, Saito S, Yokoyama KK. Prevention of tumor risk associated with the reprogramming of human pluripotent stem cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:100. [PMID: 32493501 PMCID: PMC7268627 DOI: 10.1186/s13046-020-01584-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/22/2020] [Indexed: 02/07/2023]
Abstract
Human pluripotent embryonic stem cells have two special features: self-renewal and pluripotency. It is important to understand the properties of pluripotent stem cells and reprogrammed stem cells. One of the major problems is the risk of reprogrammed stem cells developing into tumors. To understand the process of differentiation through which stem cells develop into cancer cells, investigators have attempted to identify the key factors that generate tumors in humans. The most effective method for the prevention of tumorigenesis is the exclusion of cancer cells during cell reprogramming. The risk of cancer formation is dependent on mutations of oncogenes and tumor suppressor genes during the conversion of stem cells to cancer cells and on the environmental effects of pluripotent stem cells. Dissecting the processes of epigenetic regulation and chromatin regulation may be helpful for achieving correct cell reprogramming without inducing tumor formation and for developing new drugs for cancer treatment. This review focuses on the risk of tumor formation by human pluripotent stem cells, and on the possible treatment options if it occurs. Potential new techniques that target epigenetic processes and chromatin regulation provide opportunities for human cancer modeling and clinical applications of regenerative medicine.
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Affiliation(s)
- Kenly Wuputra
- Graduate Institute of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., San-Ming District, Kaohsiung, 807, Taiwan.,Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan
| | - Chia-Chen Ku
- Graduate Institute of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., San-Ming District, Kaohsiung, 807, Taiwan.,Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan
| | - Deng-Chyang Wu
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan.,Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan
| | - Ying-Chu Lin
- School of Dentistry, School of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Shigeo Saito
- Waseda University Research Institute for Science and Engineering, Shinjuku, Tokyo, 162-8480, Japan. .,Saito Laboratory of Cell Technology Institute, Yaita, Tochigi, 329-1571, Japan.
| | - Kazunari K Yokoyama
- Graduate Institute of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Rd., San-Ming District, Kaohsiung, 807, Taiwan. .,Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan. .,Waseda University Research Institute for Science and Engineering, Shinjuku, Tokyo, 162-8480, Japan.
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7
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Liu JT, Corbett JL, Heslop JA, Duncan SA. Enhanced genome editing in human iPSCs with CRISPR-CAS9 by co-targeting ATP1a1. PeerJ 2020; 8:e9060. [PMID: 32391204 PMCID: PMC7197401 DOI: 10.7717/peerj.9060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 04/04/2020] [Indexed: 12/11/2022] Open
Abstract
Genome editing in human induced pluripotent stem cells (iPSCs) provides the potential for disease modeling and cell therapy. By generating iPSCs with specific mutations, researchers can differentiate the modified cells to their lineage of interest for further investigation. However, the low efficiency of targeting in iPSCs has hampered the application of genome editing. In this study we used a CRISPR-Cas9 system that introduces a specific point substitution into the sequence of the Na+/K+-ATPase subunit ATP1A1. The introduced mutation confers resistance to cardiac glycosides, which can then be used to select successfully targeted cells. Using this system, we introduced different formats of donor DNA for homology-directed repair (HDR), including single-strand DNAs, double-strand DNAs, and plasmid donors. We achieved a 35-fold increase in HDR when using plasmid donor with a 400 bp repair template. We further co-targeted ATP1A1 and a second locus of interest to determine the enrichment of mutagenesis after cardiac glycoside selection. Through this approach, INDEL rate was increased after cardiac glycoside treatment, while HDR enrichment was only observed at certain loci. Collectively, these results suggest that a plasmid donor with a 400 bp repair template is an optimal donor DNA for targeted substitution and co-targeting ATP1A1 with the second locus enriches for mutagenesis events through cardiac glycoside selection in human iPSCs.
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Affiliation(s)
- Jui-Tung Liu
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, United States of America
| | - James L Corbett
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, United States of America
| | - James A Heslop
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, United States of America
| | - Stephen A Duncan
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC, United States of America
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8
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Huang CY, Liu CL, Ting CY, Chiu YT, Cheng YC, Nicholson MW, Hsieh PCH. Human iPSC banking: barriers and opportunities. J Biomed Sci 2019; 26:87. [PMID: 31660969 PMCID: PMC6819403 DOI: 10.1186/s12929-019-0578-x] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 10/09/2019] [Indexed: 12/31/2022] Open
Abstract
The introduction of induced pluripotent stem cells (iPSCs) has opened up the potential for personalized cell therapies and ushered in new opportunities for regenerative medicine, disease modeling, iPSC-based drug discovery and toxicity assessment. Over the past 10 years, several initiatives have been established that aim to collect and generate a large amount of human iPSCs for scientific research purposes. In this review, we compare the construction and operation strategy of some iPSC banks as well as their ongoing development. We also introduce the technical challenges and offer future perspectives pertaining to the establishment and management of iPSC banks.
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Affiliation(s)
- Ching-Ying Huang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chun-Lin Liu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chien-Yu Ting
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yueh-Ting Chiu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yu-Che Cheng
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | | | - Patrick C H Hsieh
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.
- Graduate Institute of Medical Genomics and Proteomics and Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan.
- Cardiovascular Surgery Division, Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan.
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9
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Elovic E, Etzion S, Cohen S. MiR-499 Responsive Lethal Construct for Removal of Human Embryonic Stem Cells after Cardiac Differentiation. Sci Rep 2019; 9:14490. [PMID: 31601830 PMCID: PMC6787023 DOI: 10.1038/s41598-019-50899-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 09/19/2019] [Indexed: 01/26/2023] Open
Abstract
Deriving cell populations from human embryonic stem cells (hESCs) for cell-based therapy is considered a promising strategy to achieve functional cells, yet its translation to clinical practice depends on achieving fully defined differentiated cells. In this work, we generated a miRNA-responsive lethal mRNA construct that selectively induces rapid apoptosis in hESCs by expressing a mutant (S184del) Bax variant. Insertion of miR-499 target sites in the construct enabled to enrich hESC-derived cardiomyocytes (CMs) in culture. A deterministic non-linear model was developed and validated with experimental data, to predict the outcome for each treatment cycle and the number of treatment cycle repetitions required to achieve completely purified cTNT-positive cells. The enriched hESC-CMs displayed physiological sarcomere orientation, functional calcium handling and after transplantation into SCID-NOD mice did not form teratomas. The modular miRNA responsive lethal mRNA construct could be employed in additional directed differentiation protocols, by adjusting the miRNA to the specific cells of choice.
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Affiliation(s)
- Edan Elovic
- The Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Sharon Etzion
- Regenerative Medicine and Stem Cell (RMSC) Research Center, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Smadar Cohen
- The Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel. .,Regenerative Medicine and Stem Cell (RMSC) Research Center, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel. .,The Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel.
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10
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Tan HL, Tan BZ, Goh WXT, Cua S, Choo A. In vivo surveillance and elimination of teratoma-forming human embryonic stem cells with monoclonal antibody 2448 targeting annexin A2. Biotechnol Bioeng 2019; 116:2996-3005. [PMID: 31388993 PMCID: PMC6790577 DOI: 10.1002/bit.27135] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/25/2019] [Accepted: 07/29/2019] [Indexed: 12/14/2022]
Abstract
This study describes the use of a previously reported chimerised monoclonal antibody (mAb), ch2448, to kill human embryonic stem cells (hESCs) in vivo and prevent or delay the formation of teratomas. ch2448 was raised against hESCs and was previously shown to effectively kill ovarian and breast cancer cells in vitro and in vivo. The antigen target was subsequently found to be Annexin A2, an oncofetal antigen expressed on both embryonic cells and cancer cells. Against cancer cells, ch2448 binds and kills via antibody‐dependent cell‐mediated cytotoxicity (ADCC) and/or antibody‐drug conjugate (ADC) routes. Here, we investigate if the use of ch2448 can be extended to hESC. ch2448 was found to bind specifically to undifferentiated hESC but not differentiated progenitors. Similar to previous study using cancer cells, ch2448 kills hESC in vivo either indirectly by eliciting ADCC or directly as an ADC. The treatment with ch2448 post‐transplantation eliminated the in vivo circulating undifferentiated cells and prevented or delayed the formation of teratomas. This surveillance role of ch2448 adds an additional layer of safeguard to enhance the safety and efficacious use of pluripotent stem cell‐derived products in regenerative medicine. Thereby, translating the use of ch2448 in the treatment of cancers to a proof of concept study in hESC (or pluripotent stem cell [PSC]), we show that mAbs can also be used to eliminate teratoma forming cells in vivo during PSC‐derived cell therapies. We propose to use this strategy to complement existing methods to eliminate teratoma‐forming cells in vitro. Residual undifferentiated cells may escape in vitro removal methods and be introduced into patients together with the differentiated cells.
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Affiliation(s)
- Heng Liang Tan
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
| | - Bao Zhu Tan
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
| | - Winfred Xi Tai Goh
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
| | - Simeon Cua
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
| | - Andre Choo
- Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
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11
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Suhito IR, Kang ES, Kim DS, Baek S, Park SJ, Moon SH, Luo Z, Lee D, Min J, Kim TH. High density gold nanostructure composites for precise electrochemical detection of human embryonic stem cells in cell mixture. Colloids Surf B Biointerfaces 2019; 180:384-392. [PMID: 31082776 DOI: 10.1016/j.colsurfb.2019.04.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 04/18/2019] [Accepted: 04/29/2019] [Indexed: 01/10/2023]
Abstract
Precise detection of undifferentiated human pluripotent stem cells (hPSCs) and their entire subsequent elimination are incredibly important in preventing teratoma formations after transplantation. Recently, electrochemical sensing platforms have demonstrated immense potential as a new tool to detect remaining hPSCs in label-free and non-destructive manner. Nevertheless, one of the critical huddles of this electrochemical sensing approach is its low sensitivity since even low concentrations of remaining hPSCs were reported to form teratoma once transplanted. To address this issue, in this study, we report an engineering-based approach to improve the sensitivity of electrochemical sensing platform for hPSC detection. By optimizing the density of gold nanostructure and the matrigel concentration to improve both electro-catalytic property and biocompatibility, the sensitivity of the developed platform toward hESCs detection could reach 12,500 cells/chip, which is close to the known critical concentration of hPSCs (˜10,000 cells) that induce teratoma formation in vivo. Remarkably, the electrochemical signals were not detectable from other types of stem cell-derived endothelial cells (CB-EPCs) even at high concentrations of CB-EPCs (40,000 cells/chip), proving the high selectivity of the developed platform toward hPSC detection. Hence, the developed platform could be highly useful to solve the safety issues that are related with clinical application of hPSC-derived cells.
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Affiliation(s)
- Intan Rosalina Suhito
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Ee-Seul Kang
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Da-Seul Kim
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Seungho Baek
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Soon-Jung Park
- Department of Medicine, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Sung-Hwan Moon
- Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea
| | - Zhengtang Luo
- Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Donghyun Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Junhong Min
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea.
| | - Tae-Hyung Kim
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea; Integrative Research Center for Two-Dimensional Functional Materials, Institute of Interdisciplinary Convergence Research, Chung-Ang University, Seoul 06974, Republic of Korea.
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12
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Cardenolides: Insights from chemical structure and pharmacological utility. Pharmacol Res 2018; 141:123-175. [PMID: 30579976 DOI: 10.1016/j.phrs.2018.12.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 12/07/2018] [Accepted: 12/18/2018] [Indexed: 02/08/2023]
Abstract
Cardiac glycosides (CGs) are a class of naturally occurring steroid-like compounds, and members of this class have been in clinical use for more than 1500 years. They have been used in folk medicine as arrow poisons, abortifacients, heart tonics, emetics, and diuretics as well as in other applications. The major use of CGs today is based on their ability to inhibit the membrane-bound Na+/K+-ATPase enzyme, and they are regarded as an effective treatment for congestive heart failure (CHF), cardiac arrhythmia and atrial fibrillation. Furthermore, increasing evidence has indicated the potential cytotoxic effects of CGs against various types of cancer. In this review, we highlight some of the structural features of this class of natural products that are crucial for their efficacy, some methods of isolating these compounds from natural resources, and the structural elucidation tools that have been used. We also describe their physicochemical properties and several modern biotechnological approaches for preparing CGs that do not require plant sources.
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13
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Zhao H, Shao Y, Li H, Zhou H. A novel method to reconstruct epithelial tissue using high-purity keratinocyte lineage cells induced from human embryonic stem cells. Cell Cycle 2018; 18:264-273. [PMID: 30563408 DOI: 10.1080/15384101.2018.1555118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
The treatment of oral mucosa defect such as autologous oral mucosa caused by resection of oral mucosa carcinoma is still not ideal in clinical practice. However, Tissue engineering gives us the possibility to solve this problem. As we all know, Human embryonic stem cells (hESCs) have the ability to give rise to various cell types. We can take advantage of the totipotency of human embryonic stem cells to acquire keratinocytes. Directing the epithelial differentiation of hESCs can provide seed cells for the construction of epithelium tissue by tissue engineering. But, how to get high purity keratinocytes by induced stem cells then Applied to tissue engineering mucosa is an important challenge. We described a novel method to directly induce hESCs to differentiate into keratinocytes. Retinoic acid, ascorbic acid, and bone morphogenetic protein induced hESCs to differentiate into cells that highly expressed cytokeratin (CK)14. Our findings suggest that the retinoic acid, ascorbic acid and bone morphogenetic proteins induced hESCs to form high purity keratinocyte cell populations. In addition, we found that the highly pure keratinocyte populations reconstructed artificial tissue resembling epithelial tissue when inoculated in vitro on a biological scaffold.
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Affiliation(s)
- Houming Zhao
- a Department of Oral Mucosal Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology , Shandong University , Shanghai , China
| | - Yanxiong Shao
- a Department of Oral Mucosal Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology , Shandong University , Shanghai , China
| | - Hanqing Li
- a Department of Oral Mucosal Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology , Shandong University , Shanghai , China
| | - Haiwen Zhou
- a Department of Oral Mucosal Diseases, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology , Shandong University , Shanghai , China
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