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Cerneckis J, Cai H, Shi Y. Induced pluripotent stem cells (iPSCs): molecular mechanisms of induction and applications. Signal Transduct Target Ther 2024; 9:112. [PMID: 38670977 PMCID: PMC11053163 DOI: 10.1038/s41392-024-01809-0] [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: 07/28/2023] [Revised: 03/09/2024] [Accepted: 03/17/2024] [Indexed: 04/28/2024] Open
Abstract
The induced pluripotent stem cell (iPSC) technology has transformed in vitro research and holds great promise to advance regenerative medicine. iPSCs have the capacity for an almost unlimited expansion, are amenable to genetic engineering, and can be differentiated into most somatic cell types. iPSCs have been widely applied to model human development and diseases, perform drug screening, and develop cell therapies. In this review, we outline key developments in the iPSC field and highlight the immense versatility of the iPSC technology for in vitro modeling and therapeutic applications. We begin by discussing the pivotal discoveries that revealed the potential of a somatic cell nucleus for reprogramming and led to successful generation of iPSCs. We consider the molecular mechanisms and dynamics of somatic cell reprogramming as well as the numerous methods available to induce pluripotency. Subsequently, we discuss various iPSC-based cellular models, from mono-cultures of a single cell type to complex three-dimensional organoids, and how these models can be applied to elucidate the mechanisms of human development and diseases. We use examples of neurological disorders, coronavirus disease 2019 (COVID-19), and cancer to highlight the diversity of disease-specific phenotypes that can be modeled using iPSC-derived cells. We also consider how iPSC-derived cellular models can be used in high-throughput drug screening and drug toxicity studies. Finally, we discuss the process of developing autologous and allogeneic iPSC-based cell therapies and their potential to alleviate human diseases.
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Affiliation(s)
- Jonas Cerneckis
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Hongxia Cai
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Yanhong Shi
- Department of Neurodegenerative Diseases, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA.
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA.
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Sun R, Zhang X, Gong T, Zhang Y, Wang Q, He C, Ju J, Jin C, Ding W, Gao J, Shen J, Li Q, Shan Z. Knockdown H19 Accelerated iPSCs Reprogramming through Epigenetic Modifications and Mesenchymal-to-Epithelial Transition. Biomolecules 2024; 14:509. [PMID: 38785917 PMCID: PMC11118134 DOI: 10.3390/biom14050509] [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: 02/06/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 05/25/2024] Open
Abstract
H19 is an essential imprinted gene that is expressed to govern normal embryonic development. During reprogramming, the parental pronuclei have asymmetric reprogramming capacities and the critical reprogramming factors predominantly reside in the male pronucleus. After inhibiting the expression of H19 and Gtl2, androgenetic haploid ESCs (AG-haESCs) can efficiently and stably support the generation of healthy SC pups at a rate of ~20%, and double-knockout parthenogenetic haESCs can also produce efficiently. Induced pluripotent stem (iPS) cell reprogramming is thought to have a characteristic epigenetic pattern that is the reverse of its developmental potential; however, it is unclear how H19 participates in iPS cell reprogramming. Here, we showed that the expression of H19 was transiently increased during iPSC reprogramming. H19 knockdown resulted in greater reprogramming efficiency. The genes associated with pluripotency showed enhanced expression during the early reprogramming process, and the Oct4 promoter was demethylated by bisulfite genomic sequencing analysis. Moreover, expression analysis revealed that the mesenchymal master regulators associated with epithelial-to-mesenchymal transition (EMT) were downregulated during reprogramming in H19 knockdown. These findings provide functional insight into the role of H19 as a barrier to the early reprogramming process.
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Affiliation(s)
- Ruizhen Sun
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Ximei Zhang
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Tiantian Gong
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Yue Zhang
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Qi Wang
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Chenyao He
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Jielan Ju
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Chunmiao Jin
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Wenxin Ding
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Jingnan Gao
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Jingling Shen
- Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China;
| | - Qiuming Li
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
| | - Zhiyan Shan
- Department of Histology and Embryology, Harbin Medical University, Harbin 150081, China; (R.S.); (X.Z.); (T.G.); (Y.Z.); (Q.W.); (C.H.); (J.J.); (C.J.); (W.D.); (J.G.)
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Umeyama T, Matsuda T, Nakashima K. Lineage Reprogramming: Genetic, Chemical, and Physical Cues for Cell Fate Conversion with a Focus on Neuronal Direct Reprogramming and Pluripotency Reprogramming. Cells 2024; 13:707. [PMID: 38667322 PMCID: PMC11049106 DOI: 10.3390/cells13080707] [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: 04/02/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Although lineage reprogramming from one cell type to another is becoming a breakthrough technology for cell-based therapy, several limitations remain to be overcome, including the low conversion efficiency and subtype specificity. To address these, many studies have been conducted using genetics, chemistry, physics, and cell biology to control transcriptional networks, signaling cascades, and epigenetic modifications during reprogramming. Here, we summarize recent advances in cellular reprogramming and discuss future directions.
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Affiliation(s)
- Taichi Umeyama
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - Taito Matsuda
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka 819-0395, Japan
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Chen H, Zheng K, Qiu M, Yang J. Preparation of astrocytes by directed differentiation of pluripotent stem cells and somatic cell transdifferentiation. Dev Neurobiol 2023; 83:282-292. [PMID: 37789524 DOI: 10.1002/dneu.22929] [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: 03/28/2023] [Revised: 08/01/2023] [Accepted: 09/19/2023] [Indexed: 10/05/2023]
Abstract
Astrocytes (ACs) are the most widely distributed cells in the mammalian central nervous system, which are essential for the function and homeostasis of nervous system. Increasing evidence indicates that ACs also participate in the development of many neurological diseases and repair after nerve injury. ACs cultured in vitro provide a cellular model for studying astrocytic development, function, and the pathogenesis of associated diseases. The preparation of primary ACs (pACs) faces many limitations, so it is important to obtain high-quality ACs by the differentiation of pluripotent stem cell (PSC) or somatic cell transdifferentiation. Initially, researchers mainly tried to induce embryonic stem cells to differentiate into ACs via embryoid body (EB) and then turned to employ induced PSCs as seed cells to explore more simple and efficient directed differentiation strategies, and serum-free culture was delved to improve the quality of induced ACs. While exploring the induction of ACs by the overexpression of AC-specific transcription factors, researchers also began to investigate small molecule-mediated somatic cell transdifferentiation. Here, we provide an updated review on the research progresses in this field.
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Affiliation(s)
- Hangjie Chen
- Zhejiang Key Laboratory of Organ Development and Regeneration, College of Life and Environment Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Kang Zheng
- Zhejiang Key Laboratory of Organ Development and Regeneration, College of Life and Environment Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Mengsheng Qiu
- Zhejiang Key Laboratory of Organ Development and Regeneration, College of Life and Environment Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Junlin Yang
- Zhejiang Key Laboratory of Organ Development and Regeneration, College of Life and Environment Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
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Kang H, Hasselbeck S, Taškova K, Wang N, Oosten LNV, Mrowka R, Utikal J, Andrade-Navarro MA, Wang J, Wölfl S, Cheng X. Development of a next-generation endogenous OCT4 inducer and its anti-aging effect in vivo. Eur J Med Chem 2023; 257:115513. [PMID: 37253308 DOI: 10.1016/j.ejmech.2023.115513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/05/2023] [Accepted: 05/23/2023] [Indexed: 06/01/2023]
Abstract
The identification of small molecules capable of replacing transcription factors has been a longstanding challenge in the generation of human chemically induced pluripotent stem cells (iPSCs). Recent studies have shown that ectopic expression of OCT4, one of the master pluripotency regulators, compromised the developmental potential of resulting iPSCs, This highlights the importance of finding endogenous OCT4 inducers for the generation of clinical-grade human iPSCs. Through a cell-based high throughput screen, we have discovered several new OCT4-inducing compounds (O4Is). In this work, we prepared metabolically stable analogues, including O4I4, which activate endogenous OCT4 and associated signaling pathways in various cell lines. By combining these with a transcription factor cocktail consisting of SOX2, KLF4, MYC, and LIN28 (referred to as "CSKML") we achieved to reprogram human fibroblasts into a stable and authentic pluripotent state without the need for exogenous OCT4. In Caenorhabditis elegans and Drosophila, O4I4 extends lifespan, suggesting the potential application of OCT4-inducing compounds in regenerative medicine and rejuvenation therapy.
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Affiliation(s)
- Han Kang
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Germany
| | - Sebastian Hasselbeck
- Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt am Main, Germany
| | - Katerina Taškova
- Faculty of Biology, Johannes Gutenberg University Mainz, Germany
| | - Nessa Wang
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Germany
| | - Luuk N van Oosten
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Germany
| | - Ralf Mrowka
- Experimentelle Nephrologie, KIM III, Universitätsklinikum, Jena, Germany
| | - Jochen Utikal
- Skin Cancer Unit (G300), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Jichang Wang
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Stefan Wölfl
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Germany
| | - Xinlai Cheng
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Germany; Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt am Main, Germany; Frankfurt Cancer Institute, Germany.
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Aguirre-Vázquez A, Castorena-Torres F, Silva-Ramírez B, Peñuelas-Urquides K, Camacho-Moll ME, Salazar-Olivo LA, Velasco I, Bermúdez de León M. Cell-type dependent regulation of pluripotency and chromatin remodeling genes by hydralazine. Stem Cell Res Ther 2023; 14:42. [PMID: 36927767 PMCID: PMC10021945 DOI: 10.1186/s13287-023-03268-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
BACKGROUND The generation of induced pluripotent stem cells has opened the field of study for stem cell research, disease modeling and drug development. However, the epigenetic signatures present in somatic cells make cell reprogramming still an inefficient process. This epigenetic memory constitutes an obstacle in cellular reprogramming. Here, we report the effect of hydralazine (HYD) and valproic acid (VPA), two small molecules with proven epigenetic activity, on the expression of pluripotency genes in adult (aHF) and neonatal (nbHF) human fibroblasts. METHODS aHF and nbHF were treated with HYD and/or VPA, and viability and gene expression assays for OCT4, NANOG, c-MYC, KLF4, DNMT1, TET3, ARID1A and ARID2 by quantitative PCR were performed. aHF and nbHF were transfected with episomal plasmid bearing Yamanaka factors (OCT4, SOX2, KLF4 and c-MYC) and exposed to HYD and VPA to determine the reprogramming efficiency. Methylation sensitive restriction enzyme (MSRE) qPCR assays were performed on OCT4 and NANOG promoter regions. Immunofluorescence assays were carried out for pluripotency genes on iPSC derived from aHF and nbHF. RESULTS HYD upregulated the expression of OCT4 (2.5-fold) and NANOG (fourfold) genes but not c-Myc or KLF4 in aHF and had no significant effect on the expression of all these genes in nbHF. VPA upregulated the expression of NANOG (twofold) in aHF and c-MYC in nbHF, while it downregulated the expression of NANOG in nbHF. The combination of HYD and VPA canceled the OCT4 and NANOG overexpression induced by HYD in aHF, while it reinforced the effects of VPA on c-Myc expression in nbHF. The HYD-induced overexpression of OCT4 and NANOG in aHDF was not dependent on demethylation of gene promoters, and no changes in the reprogramming efficiency were observed in both cell populations despite the downregulation of epigenetic genes DNMT1, ARID1A, and ARID2 in nbHF. CONCLUSIONS Our data provide evidence that HYD regulates the expression of OCT4 and NANOG pluripotency genes as well as ARID1A and ARID2 genes, two members of the SWI/SNF chromatin remodeling complex family, in normal human dermal fibroblasts.
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Affiliation(s)
- Alain Aguirre-Vázquez
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico.,Depto. de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, 78216, San Luis Potosí, S.L.P., Mexico
| | | | - Beatriz Silva-Ramírez
- Departamento de Inmunogenética, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico
| | - Katia Peñuelas-Urquides
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico
| | - María Elena Camacho-Moll
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico
| | - Luis A Salazar-Olivo
- Depto. de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, 78216, San Luis Potosí, S.L.P., Mexico
| | - Iván Velasco
- Instituto de Fisiología Celular-Neurociencias, Universidad Nacional Autónoma de México, 04510, Mexico City, Mexico.,Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía "Manuel Velasco Suárez", 14269, Mexico City, Mexico
| | - Mario Bermúdez de León
- Departamento de Biología Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, 64720, Monterrey, Nuevo León, Mexico.
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Moradi-Hajidavaloo R, Jafarpour F, Hajian M, Rahimi Andani M, Rouhollahi Varnosfaderani S, Nasr-Esfahani MH. Oct-4 activating compound 1 (OAC1) could improve the quality of somatic cell nuclear transfer embryos in the bovine. Theriogenology 2023; 198:75-86. [PMID: 36565671 DOI: 10.1016/j.theriogenology.2022.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 11/06/2022]
Abstract
Previous studies described aberrant nuclear reprogramming in somatic cell nuclear transfer (SCNT) embryos that is distinctly different from fertilized embryos. This abnormal nuclear reprogramming hampers the proper pre- and/or post-implantation development. It has been demonstrated that SCNT blastocysts aberrantly expressed POU5F1 and POU5F1-related genes. With regard to this, it has been postulated that promoting the expression of POU5F1 in SCNT embryos may enhance reprogramming in SCNT embryos. In this study, we treated either fibroblast donor cells or SCNT embryos with OAC1 as a novel small molecule that has been reported to induce POU5F1 expression. Quantitative results from the MTS assay revealed that lower concentrations of OAC1 (1, 1.5, and 3 μM) are non-toxic after 2, 4, and 6 days, but higher concentrations (6, 8, 10, and 12 μM) are toxic and reduced the proliferation of cells after 6 days. No enhancement in the expression of endogenous POU5F1 was observed when both mouse and bovine fibroblast cells were treated with 1.5 and 3 μM OAC1 for up to 6 consecutive days. Subsequently, we treated either fibroblast as donor cells in the SCNT procedure (BFF-OAC1 group) or SCNT embryos [for 4 days (IVC-OAC1: D4-D7 group) or 7 days (IVC-OAC1: D0-D7 group)] with 1.5 μM OAC1. We observed that neither treatment of fibroblast donor cells nor SCNT embryos improved the cleavage and blastocyst rates. Interestingly, we observed that treatment of SCNT embryos all throughout the in vitro culture (IVC) (IVC-OAC1: D0-D7) with 1.5 μM OAC1 improves the quality of derived blastocyst which was indexed by morphological grading, blastomere allocation, epigenetic marks and mRNA expression of target genes. In conclusion, our results showed that supplementation of IVC medium with 1.5 μM OAC1 (D0-D7) accelerates SCNT reprogramming in bovine species.
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Affiliation(s)
- Reza Moradi-Hajidavaloo
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Farnoosh Jafarpour
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
| | - Mehdi Hajian
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Mohsen Rahimi Andani
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Shiva Rouhollahi Varnosfaderani
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Mohammad Hossein Nasr-Esfahani
- Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
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von Eyben FE, Kristiansen K, Kapp DS, Hu R, Preda O, Nogales FF. Epigenetic Regulation of Driver Genes in Testicular Tumorigenesis. Int J Mol Sci 2023; 24:ijms24044148. [PMID: 36835562 PMCID: PMC9966837 DOI: 10.3390/ijms24044148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/15/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
In testicular germ cell tumor type II (TGCT), a seminoma subtype expresses an induced pluripotent stem cell (iPSC) panel with four upregulated genes, OCT4/POU5F1, SOX17, KLF4, and MYC, and embryonal carcinoma (EC) has four upregulated genes, OCT4/POU5F1, SOX2, LIN28, and NANOG. The EC panel can reprogram cells into iPSC, and both iPSC and EC can differentiate into teratoma. This review summarizes the literature on epigenetic regulation of the genes. Epigenetic mechanisms, such as methylations of cytosines on the DNA string and methylations and acetylations of histone 3 lysines, regulate expression of these driver genes between the TGCT subtypes. In TGCT, the driver genes contribute to well-known clinical characteristics and the driver genes are also important for aggressive subtypes of many other malignancies. In conclusion, epigenetic regulation of the driver genes are important for TGCT and for oncology in general.
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Affiliation(s)
- Finn E. von Eyben
- Center for Tobacco Control Research, Birkevej 17, 5230 Odense, Denmark
- Correspondence: ; Tel.: +45-66145862
| | - Karsten Kristiansen
- Laboratory of Genomics and Molecular Biomedicine, August Krogh Building Department of Biology, University of Copenhagen, Universitetsparken 13, 2100 Copenhagen, Denmark
- BGI-Research, BGI-Shenzhen, Shenzhen 518120, China
- Institute of Metagenomics, Qingdao-Europe Advanced Institute for Life Sciences, BGI-Qingdao, Qingdao 166555, China
| | - Daniel S. Kapp
- Department of Radiation Oncology, Stanford University, Stanford, CA 94305, USA
| | - Rong Hu
- Department of Pathology, Laboratory Medicine, University of Wisconsin Hospital and Clinics, Madison, WI 53792, USA
| | - Ovidiu Preda
- Department of Pathology, San Cecilio University Hospital, 18071 Granada, CP, Spain
| | - Francisco F. Nogales
- Department of Pathology, School of Medicine, University Granada, 18071 Granada, CP, Spain
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Wang J, Fang J, Feng M, Li L, Ma L, Zhao X, Dai Y. Inhibition of EED activity enhances cell survival of female germline stem cell and improves the oocytes production during oogenesis in vitro. Open Biol 2023; 13:220211. [PMID: 36695089 PMCID: PMC9874982 DOI: 10.1098/rsob.220211] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Ovarian organoids, based on female germline stem cells (FGSCs), are nowadays widely applied for reproductive medicine screening and exploring the potential mechanisms during mammalian oogenesis. However, there are still key issues that urgently need to be resolved in ovarian organoid technology, one of which is to establish a culture system that effectively expands FGSCs in vitro, as well as maintaining the unipotentcy of FGSCs to differentiate into oocytes. Here, FGSCs were EED226 treated and processed for examination of proliferation and differentiation in vitro. According to the results, EED226 specifically increased FGSC survival by decreasing the enrichment of H3K27me3 on Oct4 promoter and exon, as well as enhancing OCT4 expression and inhibiting P53 and P63 expression. Notably, we also found that FGSCs with EED226 treatment differentiated into more oocytes during oogenesis in vitro, and the resultant oocytes maintained a low level of P63 versus control at early stage development. These results demonstrated that inhibition of EED activity appeared to promote the survival of FGSCs and markedly inhibited their apoptosis during in vitro differentiation. As a result of our study, we propose an effective culture strategy to culture FGSCs and obtain oocytes in vitro, which provides a new vision for oogenesis in vitro.
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Affiliation(s)
- Jiapeng Wang
- College of Life Sciences, Inner Mongolia University, Xilingol South Road No. 49, Hohhot 010020, People's Republic of China
| | - Junxian Fang
- College of Life Sciences, Inner Mongolia University, Xilingol South Road No. 49, Hohhot 010020, People's Republic of China
| | - Mingqian Feng
- College of Life Sciences, Inner Mongolia University, Xilingol South Road No. 49, Hohhot 010020, People's Republic of China
| | - Liping Li
- College of Life Sciences, Inner Mongolia University, Xilingol South Road No. 49, Hohhot 010020, People's Republic of China
| | - Lixin Ma
- College of Life Sciences, Inner Mongolia University, Xilingol South Road No. 49, Hohhot 010020, People's Republic of China
| | - Xiaorong Zhao
- College of Life Sciences, Inner Mongolia University, Xilingol South Road No. 49, Hohhot 010020, People's Republic of China
| | - Yanfeng Dai
- College of Life Sciences, Inner Mongolia University, Xilingol South Road No. 49, Hohhot 010020, People's Republic of China
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Conversion of Osteoclasts into Bone-Protective, Tumor-Suppressing Cells. Cancers (Basel) 2021; 13:cancers13225593. [PMID: 34830748 PMCID: PMC8615769 DOI: 10.3390/cancers13225593] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/28/2021] [Accepted: 11/06/2021] [Indexed: 12/15/2022] Open
Abstract
Simple Summary Osteoclasts are bone-resorbing cells and, together with bone-forming osteoblasts, they are responsible for maintaining healthy bones. When cancer cells invade into the bone, however, osteoclasts assist in cancer progression and stimulate bone loss. In this study, we converted the bone-destructive action of osteoclasts by activating their Wnt signaling and generated an osteoclast-derived, bone-protective, tumor-suppressive conditioned medium. The conditioned medium was able to suppress tumor growth and bone loss in a mouse model of mammary tumors and bone metastasis. The described approach is expected to add a novel strategy to treat primary breast cancer as well as bone metastasis. Abstract Osteoclasts are a driver of a vicious bone-destructive cycle with breast cancer cells. Here, we examined whether this vicious cycle can be altered into a beneficial one by activating Wnt signaling with its activating agent, BML284. The conditioned medium, derived from Wnt-activated RAW264.7 pre-osteoclast cells (BM CM), reduced the proliferation, migration, and invasion of EO771 mammary tumor cells. The same inhibitory effect was obtained with BML284-treated primary human macrophages. In a mouse model, BM CM reduced the progression of mammary tumors and tumor-induced osteolysis and suppressed the tumor invasion to the lung. It also inhibited the differentiation of RANKL-stimulated osteoclasts and enhanced osteoblast differentiation. BM CM was enriched with atypical tumor-suppressing proteins such as Hsp90ab1 and enolase 1 (Eno1). Immunoprecipitation revealed that extracellular Hsp90ab1 interacted with latent TGFβ (LAP-TGFβ) as an inhibitor of TGFβ activation, while Hsp90ab1 and Eno1 interacted and suppressed tumor progression via CD44, a cell-adhesion receptor and a cancer stem cell marker. This study demonstrated that osteoclast-derived CM can be converted into a bone-protective, tumor-suppressing agent by activating Wnt signaling. The results shed a novel insight on the unexplored function of osteoclasts as a potential bone protector that may develop an unconventional strategy to combat bone metastasis.
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11
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Tian E, Zhang M, Shi Y. Direct Reprogramming of Fibroblasts to Astrocytes Using Small Molecules. Methods Mol Biol 2021; 2352:45-55. [PMID: 34324179 PMCID: PMC10519582 DOI: 10.1007/978-1-0716-1601-7_4] [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] [Indexed: 09/27/2023]
Abstract
Astrocytes play important roles in neurodevelopment and diseases. Previous studies described ways to derive astrocytes from somatic cells by going through iPSC or iNSC/iNPC intermediates. Here we describe a method to directly convert mouse fibroblasts into functional astrocytes using small molecules without transgenes or viral transduction. The direct chemical reprogramming method described in this study provides a more rapid way to derive astrocytes from fibroblasts.
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Affiliation(s)
- E Tian
- Division of Stem Cell Biology Research, Department of Developmental and Stem Cell Biology, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Mingzi Zhang
- Division of Stem Cell Biology Research, Department of Developmental and Stem Cell Biology, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Yanhong Shi
- Division of Stem Cell Biology Research, Department of Developmental and Stem Cell Biology, Beckman Research Institute of City of Hope, Duarte, CA, USA.
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12
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Varun BV, Vaithegi K, Yi S, Park SB. Nature-inspired remodeling of (aza)indoles to meta-aminoaryl nicotinates for late-stage conjugation of vitamin B 3 to (hetero)arylamines. Nat Commun 2020; 11:6308. [PMID: 33298909 PMCID: PMC7726565 DOI: 10.1038/s41467-020-19610-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 10/14/2020] [Indexed: 12/16/2022] Open
Abstract
Despite the availability of numerous routes to substituted nicotinates based on the Bohlmann–Rahtz pyridine synthesis, the existing methods have several limitations, such as the inevitable ortho-substitutions and the inability to conjugate vitamin B3 to other pharmaceutical agents. Inspired by the biosynthesis of nicotinic acid (a form of vitamin B3) from tryptophan, we herein report the development of a strategy for the synthesis of meta-aminoaryl nicotinates from 3-formyl(aza)indoles. Our strategy is mechanistically different from the reported routes and involves the transformation of (aza)indole scaffolds into substituted meta-aminobiaryl scaffolds via Aldol-type addition and intramolecular cyclization followed by C–N bond cleavage and re-aromatization. Unlike previous synthetic routes, this biomimetic method utilizes propiolates as enamine precursors and thus allows access to ortho-unsubstituted nicotinates. In addition, the synthetic feasibility toward the halo-/boronic ester-substituted aminobiaryls clearly differentiates the present strategy from other cross-coupling strategies. Most importantly, our method enables the late-stage conjugation of bioactive (hetero)arylamines with nicotinates and nicotinamides and allows access to the previously unexplored chemical space for biomedical research. Vitamin B3 derivatives display a range of biological activities. Here, the authors report the synthesis of meta-aminoaryl nicotinates, derivatives of vitamin B3, and their late-stage conjugation with (hetero)arylamines, ultimately expanding the chemical space for biomedical research.
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Affiliation(s)
- Begur Vasanthkumar Varun
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kannan Vaithegi
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sihyeong Yi
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung Bum Park
- CRI Center for Chemical Proteomics, Department of Chemistry, Seoul National University, Seoul, 08826, Republic of Korea.
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13
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Ostrakhovitch EA, Akakura S, Tabibzadeh S. Hydrogen sulfide facilitates reprogramming and trans-differentiation in 3D dermal fibroblast. PLoS One 2020; 15:e0241685. [PMID: 33180827 PMCID: PMC7660576 DOI: 10.1371/journal.pone.0241685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 10/19/2020] [Indexed: 12/24/2022] Open
Abstract
The efficiency of cell reprogramming in two-dimensional (2D) cultures is limited. Given that cellular stemness is intimately related to microenvironmental changes, 3D cell cultures have the potential of overcoming this limited capacity by allowing cells to self-organize by aggregation. In 3D space, cells interact more efficiently, modify their cellular topology, gene expression, signaling, and metabolism. It is yet not clear as how 3D culture environments modify the reprogramming potential of fibroblasts. We demonstrate that 3D spheroids from dermal fibroblasts formed under ultra-low attachment conditions showed increased lactate production. This is a requisite for cell reprogramming, increase their expression of pluripotency genes, such as OCT4, NANOG and SOX2, and display upregulated cystathionine-β-synthase (CBS) and hydrogen sulfide (H2S) production. Knockdown of CBS by RNAi suppresses lactic acid and H2S production and concomitantly decreases the expression of OCT4 and NANOG. On the contrary, H2S donors, NaHS and garlic-derived diallyl trisulfide (DATS), promote the expression of OCT4, and support osteogenic trans-differentiation of fibroblasts. These results demonstrate that CBS mediated release of H2S regulates the reprogramming of dermal fibroblasts grown in 3D cultures and supports their trans-differentiation.
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Affiliation(s)
- Elena A. Ostrakhovitch
- Frontiers in Bioscience Research Institute in Aging and Cancer, Irvine, CA, United States of America
| | - Shin Akakura
- Frontiers in Bioscience Research Institute in Aging and Cancer, Irvine, CA, United States of America
| | - Siamak Tabibzadeh
- Frontiers in Bioscience Research Institute in Aging and Cancer, Irvine, CA, United States of America
- * E-mail:
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14
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Yu C, Ding S. Therapeutic strategies targeting somatic stem cells: Chemical approaches. Bioorg Med Chem 2020; 28:115824. [PMID: 33126088 DOI: 10.1016/j.bmc.2020.115824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/15/2020] [Accepted: 10/17/2020] [Indexed: 02/08/2023]
Abstract
Therapeutic modulation of fate and behavior of somatic stem cells can generate safe and functional cells ex vivo for cell-based therapy, or to repair and regenerate damaged tissues in vivo. Chemical approaches involving small molecules have provided promising approaches for modulating cellular fate and function. These strategies offer opportunities that support regenerative medicine. Here, we discuss strategies targeting somatic stem cells through chemical approaches, highlighting their progression as well as future prospects.
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Affiliation(s)
- Chen Yu
- Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen 518132, China
| | - Sheng Ding
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China.
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15
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Kumar D, Anand T, Talluri TR, Kues WA. Potential of transposon-mediated cellular reprogramming towards cell-based therapies. World J Stem Cells 2020; 12:527-544. [PMID: 32843912 PMCID: PMC7415244 DOI: 10.4252/wjsc.v12.i7.527] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/09/2020] [Accepted: 05/28/2020] [Indexed: 02/07/2023] Open
Abstract
Induced pluripotent stem (iPS) cells present a seminal discovery in cell biology and promise to support innovative treatments of so far incurable diseases. To translate iPS technology into clinical trials, the safety and stability of these reprogrammed cells needs to be shown. In recent years, different non-viral transposon systems have been developed for the induction of cellular pluripotency, and for the directed differentiation into desired cell types. In this review, we summarize the current state of the art of different transposon systems in iPS-based cell therapies.
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Affiliation(s)
- Dharmendra Kumar
- Animal Physiology and Reproduction Division, ICAR-Central Institute for Research on Buffaloes, Hisar 125001, India
| | - Taruna Anand
- NCVTC, ICAR-National Research Centre on Equines, Hisar 125001, India
| | - Thirumala R Talluri
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner 334001, India
| | - Wilfried A Kues
- Friedrich-Loeffler-Institut, Institute of Farm Animal Genetics, Department of Biotechnology, Mariensee 31535, Germany
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16
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Borgohain MP, Haridhasapavalan KK, Dey C, Adhikari P, Thummer RP. An Insight into DNA-free Reprogramming Approaches to Generate Integration-free Induced Pluripotent Stem Cells for Prospective Biomedical Applications. Stem Cell Rev Rep 2020; 15:286-313. [PMID: 30417242 DOI: 10.1007/s12015-018-9861-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
More than a decade ago, a pioneering study reported generation of induced Pluripotent Stem Cells (iPSCs) by ectopic expression of a cocktail of reprogramming factors in fibroblasts. This study has revolutionized stem cell research and has garnered immense interest from the scientific community globally. iPSCs hold tremendous potential for understanding human developmental biology, disease modeling, drug screening and discovery, and personalized cell-based therapeutic applications. The seminal study identified Oct4, Sox2, Klf4 and c-Myc as a potent combination of genes to induce reprogramming. Subsequently, various reprogramming factors were identified by numerous groups. Most of these studies have used integrating viral vectors to overexpress reprogramming factors in somatic cells to derive iPSCs. However, these techniques restrict the clinical applicability of these cells as they may alter the genome due to random viral integration resulting in insertional mutagenesis and tumorigenicity. To circumvent this issue, alternative integration-free reprogramming approaches are continuously developed that eliminate the risk of genomic modifications and improve the prospects of iPSCs from lab to clinic. These methods establish that integration of transgenes into the genome is not essential to induce pluripotency in somatic cells. This review provides a comprehensive overview of the most promising DNA-free reprogramming techniques that have the potential to derive integration-free iPSCs without genomic manipulation, such as sendai virus, recombinant proteins, microRNAs, synthetic messenger RNA and small molecules. The understanding of these approaches shall pave a way for the generation of clinical-grade iPSCs. Subsequently, these iPSCs can be differentiated into desired cell type(s) for various biomedical applications.
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Affiliation(s)
- Manash P Borgohain
- Laboratory for Stem Cell Engineering and Regenerative Medicine, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Krishna Kumar Haridhasapavalan
- Laboratory for Stem Cell Engineering and Regenerative Medicine, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Chandrima Dey
- Laboratory for Stem Cell Engineering and Regenerative Medicine, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Poulomi Adhikari
- Laboratory for Stem Cell Engineering and Regenerative Medicine, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Rajkumar P Thummer
- Laboratory for Stem Cell Engineering and Regenerative Medicine, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India.
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Yang B, Zhang F, Cheng F, Ying L, Wang C, Shi K, Wang J, Xia K, Gong Z, Huang X, Yu C, Li F, Liang C, Chen Q. Strategies and prospects of effective neural circuits reconstruction after spinal cord injury. Cell Death Dis 2020; 11:439. [PMID: 32513969 PMCID: PMC7280216 DOI: 10.1038/s41419-020-2620-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 05/16/2020] [Accepted: 05/18/2020] [Indexed: 02/06/2023]
Abstract
Due to the disconnection of surviving neural elements after spinal cord injury (SCI), such patients had to suffer irreversible loss of motor or sensory function, and thereafter enormous economic and emotional burdens were brought to society and family. Despite many strategies being dealing with SCI, there is still no effective regenerative therapy. To date, significant progress has been made in studies of SCI repair strategies, including gene regulation of neural regeneration, cell or cell-derived exosomes and growth factors transplantation, repair of biomaterials, and neural signal stimulation. The pathophysiology of SCI is complex and multifaceted, and its mechanisms and processes are incompletely understood. Thus, combinatorial therapies have been demonstrated to be more effective, and lead to better neural circuits reconstruction and functional recovery. Combinations of biomaterials, stem cells, growth factors, drugs, and exosomes have been widely developed. However, simply achieving axon regeneration will not spontaneously lead to meaningful functional recovery. Therefore, the formation and remodeling of functional neural circuits also depend on rehabilitation exercises, such as exercise training, electrical stimulation (ES) and Brain-Computer Interfaces (BCIs). In this review, we summarize the recent progress in biological and engineering strategies for reconstructing neural circuits and promoting functional recovery after SCI, and emphasize current challenges and future directions.
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Affiliation(s)
- Biao Yang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Feng Zhang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Feng Cheng
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Liwei Ying
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Chenggui Wang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Kesi Shi
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Jingkai Wang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Kaishun Xia
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Zhe Gong
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Xianpeng Huang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Cao Yu
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China
| | - Fangcai Li
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China.
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.
| | - Chengzhen Liang
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China.
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.
| | - Qixin Chen
- Department of Orthopedics Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, Zhejiang, China.
- Zhejiang Key Laboratory of Bone and Joint Precision and Department of Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang, 310009, China.
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18
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Efficient Production of Cell-permeable Oct4 Protein Using 30Kc19 Protein Originating from Silkworm. BIOTECHNOL BIOPROC E 2019. [DOI: 10.1007/s12257-019-0204-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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19
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Gong L, Yan Q, Zhang Y, Fang X, Liu B, Guan X. Cancer cell reprogramming: a promising therapy converting malignancy to benignity. Cancer Commun (Lond) 2019; 39:48. [PMID: 31464654 PMCID: PMC6716904 DOI: 10.1186/s40880-019-0393-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 08/14/2019] [Indexed: 02/07/2023] Open
Abstract
In the past decade, remarkable progress has been made in reprogramming terminally differentiated somatic cells and cancer cells into induced pluripotent cells and cancer cells with benign phenotypes. Recent studies have explored various approaches to induce reprogramming from one cell type to another, including lineage-specific transcription factors-, combinatorial small molecules-, microRNAs- and embryonic microenvironment-derived exosome-mediated reprogramming. These reprogramming approaches have been proven to be technically feasible and versatile to enable re-activation of sequestered epigenetic regions, thus driving fate decisions of differentiated cells. One of the significant utilities of cancer cell reprogramming is the therapeutic potential of retrieving normal cell functions from various malignancies. However, there are several major obstacles to overcome in cancer cell reprogramming before clinical translation, including characterization of reprogramming mechanisms, improvement of reprogramming efficiency and safety, and development of delivery methods. Recently, several insights in reprogramming mechanism have been proposed, and determining progress has been achieved to promote reprogramming efficiency and feasibility, allowing it to emerge as a promising therapy against cancer in the near future. This review aims to discuss recent applications in cancer cell reprogramming, with a focus on the clinical significance and limitations of different reprogramming approaches, while summarizing vital roles played by transcription factors, small molecules, microRNAs and exosomes during the reprogramming process.
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Affiliation(s)
- Lanqi Gong
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, 999077, P.R. China.,State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, 999077, P.R. China
| | - Qian Yan
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, 999077, P.R. China.,State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, 999077, P.R. China
| | - Yu Zhang
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, 999077, P.R. China.,State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, 999077, P.R. China
| | - Xiaona Fang
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, 999077, P.R. China.,State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, 999077, P.R. China
| | - Beilei Liu
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, 999077, P.R. China.,State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, 999077, P.R. China
| | - Xinyuan Guan
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, 999077, P.R. China. .,State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, 999077, P.R. China.
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Headley KM, Kedziora KM, Alejo A, Lai EZX, Purvis JE, Hathaway NA. Chemical screen for epigenetic barriers to single allele activation of Oct4. Stem Cell Res 2019; 38:101470. [PMID: 31170660 PMCID: PMC6886240 DOI: 10.1016/j.scr.2019.101470] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/30/2019] [Accepted: 05/21/2019] [Indexed: 02/07/2023] Open
Abstract
Here we utilized the chromatin in vivo assay (CiA) mouse platform to directly examine the epigenetic barriers impeding the activation of the CiA:Oct4 allele in mouse embryonic fibroblasts (MEF)s when stimulated with a transcription factor. The CiA:Oct4 allele contains an engineered EGFP reporter replacing one copy of the Oct4 gene, with an upstream Gal4 array in the promoter that allows recruitment of chromatin modifying machinery. We stimulated gene activation of the CiA:Oct4 allele by binding a transcriptional activator to the Gal4 array. As with cellular reprograming, this process is inefficient with only a small percentage of the cells re-activating CiA:Oct4 after weeks. Epigenetic barriers to gene activation potentially come from heavy DNA methylation, histone deacetylation, chromatin compaction, and other posttranslational marks (PTM) at the differentiated CiA:Oct4 allele in MEFs. Using this platform, we performed a high-throughput chemical screen for compounds that increased the efficiency of activation. We found that Azacytidine and newer generation histone deacetylase (HDAC) inhibitors were the most efficient at facilitating directed transcriptional activation of this allele. We found one hit form our screen, Mocetinostat, improved iPSC generation under transcription factor reprogramming conditions. These results separate individual allele activation from whole cell reprograming and give new insights that will advance tissue engineering.
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Affiliation(s)
- Kathryn M Headley
- Division of Chemical Biology and Medicinal Chemistry, Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, United States of America; Curriculum for Genetics and Molecular Biology, University of North Carolina, Chapel Hill, NC 27599, United States of America
| | - Katarzyna M Kedziora
- Department of Genetics, Curriculum for Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America
| | - Aidin Alejo
- Division of Chemical Biology and Medicinal Chemistry, Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, United States of America
| | - Elianna Zhi-Xiang Lai
- Division of Chemical Biology and Medicinal Chemistry, Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, United States of America
| | - Jeremy E Purvis
- Curriculum for Genetics and Molecular Biology, University of North Carolina, Chapel Hill, NC 27599, United States of America; Department of Genetics, Curriculum for Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America; Lineberger Comprehensive Cancer Center, University of North Carolina, 120 Mason Farm Road, Chapel Hill, NC 27599, United States of America
| | - Nathaniel A Hathaway
- Division of Chemical Biology and Medicinal Chemistry, Center for Integrative Chemical Biology and Drug Discovery, UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, United States of America; Curriculum for Genetics and Molecular Biology, University of North Carolina, Chapel Hill, NC 27599, United States of America; Lineberger Comprehensive Cancer Center, University of North Carolina, 120 Mason Farm Road, Chapel Hill, NC 27599, United States of America.
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Zhou J, Sun J. A Revolution in Reprogramming: Small Molecules. Curr Mol Med 2019; 19:77-90. [DOI: 10.2174/1566524019666190325113945] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/07/2018] [Accepted: 02/18/2019] [Indexed: 02/08/2023]
Abstract
Transplantation of reprogrammed cells from accessible sources and in vivo
reprogramming are potential therapies for regenerative medicine. During the last
decade, genetic approaches, which mostly involved transcription factors and
microRNAs, have been shown to affect cell fates. However, their potential
carcinogenicity and other unexpected effects limit their translation into clinical
applications. Recently, with the power of modern biology-oriented design and synthetic
chemistry, as well as high-throughput screening technology, small molecules have been
shown to enhance reprogramming efficiency, replace genetic factors, and help elucidate
the molecular mechanisms underlying cellular plasticity and degenerative diseases. As a
non-viral and non-integrating approach, small molecules not only show revolutionary
capacities in generating desired exogenous cell types but also have potential as drugs
that can restore tissues through repairing or reprogramming endogenous cells. Here, we
focus on the recent progress made to use small molecules in cell reprogramming along
with some related mechanisms to elucidate these issues.
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Affiliation(s)
- Jin Zhou
- Shanghai Children's Medical Center, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Jie Sun
- Shanghai Children's Medical Center, Shanghai Jiaotong University, School of Medicine, Shanghai, China
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Abu-Dawud R, Graffmann N, Ferber S, Wruck W, Adjaye J. Pluripotent stem cells: induction and self-renewal. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2017.0213. [PMID: 29786549 DOI: 10.1098/rstb.2017.0213] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2017] [Indexed: 12/21/2022] Open
Abstract
Pluripotent stem cells (PSCs) lie at the heart of modern regenerative medicine due to their properties of unlimited self-renewal in vitro and their ability to differentiate into cell types representative of the three embryonic germ layers-mesoderm, ectoderm and endoderm. The derivation of induced PSCs bypasses ethical concerns associated with the use of human embryonic stem cells and also enables personalized cell-based therapies. To exploit their regenerative potential, it is essential to have a firm understanding of the molecular processes associated with their induction from somatic cells. This understanding serves two purposes: first, to enable efficient, reliable and cost-effective production of excellent quality induced PSCs and, second, to enable the derivation of safe, good manufacturing practice-grade transplantable donor cells. Here, we review the reprogramming process of somatic cells into induced PSCs and associated mechanisms with emphasis on self-renewal, epigenetic control, mitochondrial bioenergetics, sub-states of pluripotency, naive ground state, naive and primed. A meta-analysis identified genes expressed exclusively in the inner cell mass and in the naive but not in the primed pluripotent state. We propose these as additional biomarkers defining naive PSCs.This article is part of the theme issue 'Designer human tissue: coming to a lab near you'.
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Affiliation(s)
- R Abu-Dawud
- Comparative Medicine Department, King Faisal Specialist Hospital and Research Centre, Zahrawi Street, Riyadh 11211, Saudi Arabia
| | - N Graffmann
- Institute for Stem Cell Research and Regenerative Medicine, Heinrich-Heine-Universität Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - S Ferber
- Institute for Stem Cell Research and Regenerative Medicine, Heinrich-Heine-Universität Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - W Wruck
- Institute for Stem Cell Research and Regenerative Medicine, Heinrich-Heine-Universität Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - J Adjaye
- Institute for Stem Cell Research and Regenerative Medicine, Heinrich-Heine-Universität Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
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Feng Y, Xie XY, Yang YQ, Sun YT, Ma WH, Zhou PJ, Li ZY, Liu HQ, Wang YF, Huang YS. Synthesis and evaluation of pyrimidoindole analogs in umbilical cord blood ex vivo expansion. Eur J Med Chem 2019; 174:181-197. [PMID: 31035239 DOI: 10.1016/j.ejmech.2019.04.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 11/28/2022]
Abstract
The scarcity of hematopoietic stem cells (HSCs) significantly hindered their clinical potentials. Umbilical cord blood (UCB) has become the leading source of HSCs for both research and clinical applications. But the low content of HSCs in a single UCB unit limited its use only to pediatric patients. Various cytokines and small molecules have demonstrated strong abilities in promoting HSC ex vivo expansion, of which UM171 is the newest and by far the most potent HSC ex vivo expansion agent. In this study, we synthesized 37 pyrimidoindole analogs and identified 6 compounds to be potent in promoting HSC ex vivo expansion. In particular, analog 11 was found to be the most effective in stimulating ex vivo expansion of UCB CD34+ cells and CD34+CD38- cells. Initial data indicated that compound 11 promoted the absolute number of long term HSCs and inhibited their differentiation. UCB HSCs expanded with 11 retained adequate multi-lineage differentiation capacity. In addition, compound 11 is not cytotoxic at its test concentrations, suggesting that it merits further investigation for potential clinical applications.
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Affiliation(s)
- Yue Feng
- School of Pharmacy, Guangdong Medical University, 1 Xincheng Ave, Songshan Lake Technology Park, Dongguan, Guangdong 523808, China; Institute of Biomedicine, College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Xiao-Yang Xie
- School of Pharmacy, Guangdong Medical University, 1 Xincheng Ave, Songshan Lake Technology Park, Dongguan, Guangdong 523808, China
| | - Yi-Qiu Yang
- Department of Pharmacy, Zhaoqing Medical College, 6 Xijiang South Rd, Zhaoqing, Guangdong, 526020, China
| | - Yu-Tong Sun
- School of Pharmacy, Guangdong Medical University, 1 Xincheng Ave, Songshan Lake Technology Park, Dongguan, Guangdong 523808, China
| | - Wen-Hui Ma
- School of Pharmacy, Guangdong Medical University, 1 Xincheng Ave, Songshan Lake Technology Park, Dongguan, Guangdong 523808, China
| | - Peng-Jun Zhou
- Institute of Biomedicine, College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Zi-Yao Li
- Institute of Biomedicine, College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Hui-Qiang Liu
- Institute of Biomedicine, College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Yi-Fei Wang
- Institute of Biomedicine, College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Yun-Sheng Huang
- School of Pharmacy, Guangdong Medical University, 1 Xincheng Ave, Songshan Lake Technology Park, Dongguan, Guangdong 523808, China.
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24
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Ramotowski C, Qu X, Villa-Diaz LG. Progress in the Use of Induced Pluripotent Stem Cell-Derived Neural Cells for Traumatic Spinal Cord Injuries in Animal Populations: Meta-Analysis and Review. Stem Cells Transl Med 2019; 8:681-693. [PMID: 30903654 PMCID: PMC6591555 DOI: 10.1002/sctm.18-0225] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 02/20/2019] [Indexed: 12/25/2022] Open
Abstract
Induced pluripotent stem cells (iPSCs) are cells genetically reprogrammed from somatic cells, which can be differentiated into neurological lineages with the aim to replace or assist damaged neurons in the treatment of spinal cord injuries (SCIs) caused by physical trauma. Here, we review studies addressing the functional use of iPSC‐derived neural cells in SCIs and perform a meta‐analysis to determine if significant motor improvement is restored after treatment with iPSC‐derived neural cells compared with treatments using embryonic stem cell (ESC)‐derived counterpart cells and control treatments. Overall, based on locomotion scales in rodents and monkeys, our meta‐analysis indicates a therapeutic benefit for SCI treatment using neural cells derived from either iPSCs or ESCs, being this of importance due to existing ethical and immunological complications using ESCs. Results from these studies are evidence of the successes and limitations of iPSC‐derived neural cells in the recovery of motor capacity. stem cells translational medicine2019;8:681&693
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Affiliation(s)
| | - Xianggui Qu
- Department of Mathematics and Statistics, Oakland University College of Arts and Sciences, Rochester, Michigan, USA
| | - Luis G Villa-Diaz
- Department of Biological Sciences, Oakland University College of Arts and Sciences, Rochester, Michigan, USA
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25
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Xu X, Qi LS. A CRISPR–dCas Toolbox for Genetic Engineering and Synthetic Biology. J Mol Biol 2019; 431:34-47. [DOI: 10.1016/j.jmb.2018.06.037] [Citation(s) in RCA: 177] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 06/20/2018] [Accepted: 06/20/2018] [Indexed: 12/21/2022]
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26
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Wang F, Kong J, Cui YY, Liu P, Wen JY. Is Human-induced Pluripotent Stem Cell the Best Optimal? Chin Med J (Engl) 2018; 131:852-856. [PMID: 29578130 PMCID: PMC5887745 DOI: 10.4103/0366-6999.228231] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Objective: Since the advent of induced pluripotent stem cell (iPSC) technology a decade ago, enormous progress has been made in stem cell biology and regenerative medicine. Human iPSCs have been widely used for disease modeling, drug discovery, and cell therapy development. In this review, we discuss the progress in applications of iPSC technology that are particularly relevant to drug discovery and regenerative medicine, and consider the remaining challenges and the emerging opportunities in the field. Data Sources: Articles in this review were searched from PubMed database from January 2014 to December 2017. Study Selection: Original articles about iPSCs and cardiovascular diseases were included and analyzed. Results: iPSC holds great promises for human disease modeling, drug discovery, and stem cell-based therapy, and this potential is only beginning to be realized. However, several important issues remain to be addressed. Conclusions: The recent availability of human cardiomyocytes derived from iPSCs opens new opportunities to build in vitro models of cardiac disease, screening for new drugs and patient-specific cardiac therapy.
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Affiliation(s)
- Feng Wang
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029; Department of Cardiovascular Surgery, China-Japan Friendship Hospital, Beijing 100029, China
| | - Jie Kong
- Department of Cardiovascular Surgery, China-Japan Friendship Hospital, Beijing 100029, China
| | - Yi-Yao Cui
- Department of Cardiovascular Surgery, China-Japan Friendship Hospital, Beijing 100029, China
| | - Peng Liu
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029; Department of Cardiovascular Surgery, China-Japan Friendship Hospital, Beijing 100029, China
| | - Jian-Yan Wen
- Peking University China-Japan Friendship School of Clinical Medicine, Beijing 100029; Department of Cardiovascular Surgery, China-Japan Friendship Hospital, Beijing 100029, China
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27
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Zhang YJ, Chen X, Li G, Chan KM, Heng BC, Yin Z, Ouyang HW. Concise Review: Stem Cell Fate Guided By Bioactive Molecules for Tendon Regeneration. Stem Cells Transl Med 2018; 7:404-414. [PMID: 29573225 PMCID: PMC5905226 DOI: 10.1002/sctm.17-0206] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 01/29/2018] [Indexed: 12/22/2022] Open
Abstract
Tendon disorders, which are commonly presented in the clinical setting, disrupt the patients' normal work and life routines, and they damage the careers of athletes. However, there is still no effective treatment for tendon disorders. In the field of tissue engineering, the potential of the therapeutic application of exogenous stem cells to treat tendon pathology has been demonstrated to be promising. With the development of stem cell biology and chemical biology, strategies that use inductive tenogenic factors to program stem cell fate in situ are the most easily and readily translatable to clinical applications. In this review, we focus on bioactive molecules that can potentially induce tenogenesis in adult stem cells, and we summarize the various differentiation factors found in comparative studies. Moreover, we discuss the molecular regulatory mechanisms of tenogenesis, and we examine the various challenges in developing standardized protocols for achieving efficient and reproducible tenogenesis. Finally, we discuss and predict future directions for tendon regeneration. Stem Cells Translational Medicine 2018;7:404-414.
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Affiliation(s)
- Yan-Jie Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - Xiao Chen
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China.,China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, People's Republic of China
| | - Gang Li
- China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, People's Republic of China.,Faculty of Medicine, Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, People's Republic of China.,Stem Cells and Regenerative Medicine Laboratory, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, People's Republic of China
| | - Kai-Ming Chan
- Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China.,Faculty of Medicine, Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, People's Republic of China
| | - Boon Chin Heng
- Faculty of Dentistry, Department of Endodontology, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Zi Yin
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China.,China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, People's Republic of China.,Faculty of Medicine, Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, People's Republic of China.,Stem Cells and Regenerative Medicine Laboratory, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, People's Republic of China
| | - Hong-Wei Ouyang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China.,Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China.,China Orthopaedic Regenerative Medicine (CORMed), Hangzhou, People's Republic of China
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28
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Baranek M, Belter A, Naskręt-Barciszewska MZ, Stobiecki M, Markiewicz WT, Barciszewski J. Effect of small molecules on cell reprogramming. MOLECULAR BIOSYSTEMS 2017; 13:277-313. [PMID: 27918060 DOI: 10.1039/c6mb00595k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The essential idea of regenerative medicine is to fix or replace tissues or organs with alive and patient-specific implants. Pluripotent stem cells are able to indefinitely self-renew and differentiate into all cell types of the body which makes them a potent substantial player in regenerative medicine. The easily accessible source of induced pluripotent stem cells may allow obtaining and cultivating tissues in vitro. Reprogramming refers to regression of mature cells to its initial pluripotent state. One of the approaches affecting pluripotency is the usage of low molecular mass compounds that can modulate enzymes and receptors leading to the formation of pluripotent stem cells (iPSCs). It would be great to assess the general character of such compounds and reveal their new derivatives or modifications to increase the cell reprogramming efficiency. Many improvements in the methods of pluripotency induction have been made by various groups in order to limit the immunogenicity and tumorigenesis, increase the efficiency and accelerate the kinetics. Understanding the epigenetic changes during the cellular reprogramming process will extend the comprehension of stem cell biology and lead to potential therapeutic approaches. There are compounds which have been already proven to be or for now only putative inducers of the pluripotent state that may substitute for the classic reprogramming factors (Oct3/4, Sox2, Klf4, c-Myc) in order to improve the time and efficiency of pluripotency induction. The effect of small molecules on gene expression is dosage-dependent and their application concentration needs to be strictly determined. In this review we analysed the role of small molecules in modulations leading to pluripotency induction, thereby contributing to our understanding of stem cell biology and uncovering the major mechanisms involved in that process.
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Affiliation(s)
- M Baranek
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego str. 12/14, 61-704 Poznań, Poland.
| | - A Belter
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego str. 12/14, 61-704 Poznań, Poland.
| | - M Z Naskręt-Barciszewska
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego str. 12/14, 61-704 Poznań, Poland.
| | - M Stobiecki
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego str. 12/14, 61-704 Poznań, Poland.
| | - W T Markiewicz
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego str. 12/14, 61-704 Poznań, Poland.
| | - J Barciszewski
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego str. 12/14, 61-704 Poznań, Poland.
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29
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Chattong S, Ruangwattanasuk O, Yindeedej W, Setpakdee A, Manotham K. CD34+ cells from dental pulp stem cells with a ZFN-mediated and homology-driven repair-mediated locus-specific knock-in of an artificial β-globin gene. Gene Ther 2017; 24:425-432. [DOI: 10.1038/gt.2017.42] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 04/21/2017] [Accepted: 05/10/2017] [Indexed: 12/12/2022]
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30
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iPS cell technologies and their prospect for bone regeneration and disease modeling: A mini review. J Adv Res 2017; 8:321-327. [PMID: 28386481 PMCID: PMC5374850 DOI: 10.1016/j.jare.2017.02.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 02/24/2017] [Accepted: 02/25/2017] [Indexed: 12/27/2022] Open
Abstract
Bone disorders are a group of varied acute and chronic traumatic, degenerative, malignant or congenital conditions affecting the musculoskeletal system. They are prevalent in society and, with an ageing population, the incidence and impact on the population’s health is growing. Severe persisting pain and limited mobility are the major symptoms of the disorder that impair the quality of life in affected patients. Current therapies only partially treat the disorders, offering management of symptoms, or temporary replacement with inert materials. However, during the last few years, the options for the treatment of bone disorders have greatly expanded, thanks to the advent of regenerative medicine. Skeletal cell-based regeneration medicine offers promising reparative therapies for patients. Mesenchymal stem (stromal) cells from different tissues have been gradually translated into clinical practice; however, there are a number of limitations. The introduction of reprogramming methods and the subsequent production of induced pluripotent stem cells provides a possibility to create human-specific models of bone disorders. Furthermore, human-induced pluripotent stem cell-based autologous transplantation is considered to be future breakthrough in the field of regenerative medicine. The main goal of the present paper is to review recent applications of induced pluripotent stem cells in bone disease modeling and to discuss possible future therapy options. The present article contributes to the dissemination of scientific and pre-clinical results between physicians, mainly orthopedist and thus supports the translation to clinical practice.
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31
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Abad M, Hashimoto H, Zhou H, Morales MG, Chen B, Bassel-Duby R, Olson EN. Notch Inhibition Enhances Cardiac Reprogramming by Increasing MEF2C Transcriptional Activity. Stem Cell Reports 2017; 8:548-560. [PMID: 28262548 PMCID: PMC5355682 DOI: 10.1016/j.stemcr.2017.01.025] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 01/26/2017] [Accepted: 01/27/2017] [Indexed: 01/14/2023] Open
Abstract
Conversion of fibroblasts into functional cardiomyocytes represents a potential means of restoring cardiac function after myocardial infarction, but so far this process remains inefficient and little is known about its molecular mechanisms. Here we show that DAPT, a classical Notch inhibitor, enhances the conversion of mouse fibroblasts into induced cardiac-like myocytes by the transcription factors GATA4, HAND2, MEF2C, and TBX5. DAPT cooperates with AKT kinase to further augment this process, resulting in up to 70% conversion efficiency. Moreover, DAPT promotes the acquisition of specific cardiomyocyte features, substantially increasing calcium flux, sarcomere structure, and the number of spontaneously beating cells. Transcriptome analysis shows that DAPT induces genetic programs related to muscle development, differentiation, and excitation-contraction coupling. Mechanistically, DAPT increases binding of the transcription factor MEF2C to the promoter regions of cardiac structural genes. These findings provide mechanistic insights into the reprogramming process and may have important implications for cardiac regeneration therapies. Notch activation is a barrier for GHMT-induced cardiac cell reprogramming Notch blockade by DAPT improves GHMT-induced cardiac reprogramming DAPT increases sarcomere organization, calcium flux, and beating in GHMT reprogramming DAPT enhances transcriptional activity of MEF2C in GHMT reprogramming
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Affiliation(s)
- Maria Abad
- Department of Molecular Biology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; Cell Plasticity and Cancer Group, Vall d'Hebron Institute of Oncology (VHIO), c/Natzaret, 115-117, Barcelona 08035, Spain.
| | - Hisayuki Hashimoto
- Department of Molecular Biology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Huanyu Zhou
- Department of Molecular Biology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Maria Gabriela Morales
- Department of Molecular Biology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Beibei Chen
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Rhonda Bassel-Duby
- Department of Molecular Biology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Eric N Olson
- Department of Molecular Biology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA.
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Neganova I, Chichagova V, Armstrong L, Lako M. A critical role for p38MAPK signalling pathway during reprogramming of human fibroblasts to iPSCs. Sci Rep 2017; 7:41693. [PMID: 28155868 PMCID: PMC5290526 DOI: 10.1038/srep41693] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 12/09/2016] [Indexed: 01/17/2023] Open
Abstract
Reprogramming of somatic cells to induced pluripotent stem cells (iPSCs) holds enormous promise for regenerative medicine. Reprogramming is a stepwise process with well-defined stages of initiation, maturation and stabilisation which are critically dependent on interactions between key pluripotency transcription factors, epigenetic regulators and signalling pathways. In this manuscript we have investigated the role of p38 MAPK signalling pathway and have shown a subpopulation- and phase-specific pattern of activation occurring during the initiation and maturation stage of reprogramming in partially and fully reprogrammed cells respectively. Downregulation of p38 MAPK activity via RNA interference or small molecule inhibitor led to cell accumulation in G1 phase of the cell cycle and reduced expression of cell cycle regulators during the initiation stage of reprogramming. This was associated with a significant downregulation of key pluripotency marker expression, disruption of mesenchymal to epithelial transition (MET), increased expression of differentiation markers and presence of partially reprogrammed cells which retained a typical gene expression profile of mesendodermal cells and were unable to progress to fully reprogrammed phenotype. Together our data indicate an important role for p38 MAPK activity in proliferation, MET progression and establishment of pluripotent phenotype, which are necessary steps for the development of human iPSCs.
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Affiliation(s)
- Irina Neganova
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, NE1 3BZ, UK
| | - Valeria Chichagova
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, NE1 3BZ, UK
| | - Lyle Armstrong
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, NE1 3BZ, UK
| | - Majlinda Lako
- Institute of Genetic Medicine, Newcastle University, International Centre for Life, NE1 3BZ, UK
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SOX2 function and Hedgehog signaling pathway are co-conspirators in promoting androgen independent prostate cancer. Biochim Biophys Acta Mol Basis Dis 2016; 1863:253-265. [PMID: 27816521 DOI: 10.1016/j.bbadis.2016.11.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 10/25/2016] [Accepted: 11/02/2016] [Indexed: 01/09/2023]
Abstract
Developmentally inclined hedgehog (HH) signaling pathway and pluripotency inducing transcription factor SOX2 have been known to work syngerstically during cellular reprogramming events to facilitate efficient differentiation. Hence, it is not surprising that both the factors are actively involved in arbitrating malignant growth, including prostate cancer progression. Here, we have described in details the potential mechanisms by which SOX2 effects neoplastic characteristics in prostate cancer and investigated the consequences of simultaneous down-regulation of SOX2 and HH pathway in androgen-independent human prostate cancer cells. Expression of SOX2 has been determined by qRT-PCR, western blot, immunohistochemistry and immunocytochemistry analyses; its functional role determined by gene knockdown using RNAi and over-expression via chemical activation in HaCaT, DU145 and PC-3 cells. Changes in level of cell proliferation, migration and apoptosis profiles were measured by MTT, FACS, chromatin condensation and scratch assays respectively. SOX2 was expressed in all the three cell lines and its inhibition reduced cell proliferation and induced apoptosis. Most importantly, when both SOX2 and HH pathway were targeted simultaneously, cell proliferation was greatly reduced, apoptotic cell population increased drastically and migration potential was reduced. Moreover, gene expression of EMT markers such as E-cadherin and apoptosis related Bcl-2 and Bax was also investigated wherein decrease in E-cadherin and Bcl-2 levels and increase in Bax expression further substantiating our claim. These findings could provide the basis for a novel therapeutic strategy targeting both the effector i.e. SOX2 and perpetuator i.e. HH pathway of aggressive tumorigenic properties in androgen independent prostate cancer.
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Liu MY, Li XQ, Gao TH, Cui Y, Ma N, Zhou Y, Zhang GJ. Elevated HOTAIR expression associated with cisplatin resistance in non-small cell lung cancer patients. J Thorac Dis 2016; 8:3314-3322. [PMID: 28066612 DOI: 10.21037/jtd.2016.11.75] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND This study investigated the mechanism of drug resistance in non-small cell lung cancer (NSCLC) patients. We specifically studied whether long noncoding RNAs influence drug resistance in NSCLC to discover new therapeutic targets to increase the survival rate of drug-resistant NSCLC patients. METHODS Tissue samples were collected from NSCLC patients, and total RNA was isolated for assessment of HOTAIR expression and drug resistance status. MTT assays, tumor sphere formation assays, and western blot were performed to cytologically determine the relationship between HOTAIR expression and cisplatin resistance, as well as to elucidate the potential molecular mechanism involved. RESULTS HOTAIR expression in tissues of drug-resistant NSCLC patients was higher than that of non-drug-resistant patients. HOTAIR expression was elevated in cisplatin-resistant cell strains (A549/CDDP), and reducing HOTAIR expression increased the sensitivity of A549/CDDP cells to cisplatin. In addition, overexpression of HOTAIR in A549 cells increased resistance to cisplatin. Tumor sphere formation assays showed that the volume of spheres formed by cell strains expressing elevated levels of HOTAIR was greater than that of cell strains with low expression. Western blot experiments showed that elevated expression of HOTAIR upregulated tumor stem cell-related biomarkers and HOTAIR expression was directly related to Klf4 expression. CONCLUSIONS Elevated HOTAIR expression is associated with drug resistance in NSCLC patients and is related to Klf4 upregulation, providing a new therapeutic target for drug-resistant NSCLC patients.
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Affiliation(s)
- Ming-Yue Liu
- Department of Respiratory Medicine, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China;; Department of Oncology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou 450003, China
| | - Xi-Qing Li
- Department of Oncology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou 450003, China
| | - Tian-Hui Gao
- Department of Oncology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou 450003, China
| | - Yao Cui
- Department of Oncology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou 450003, China
| | - Ning Ma
- Department of Oncology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou 450003, China
| | - Yun Zhou
- Department of Oncology, Henan Provincial People's Hospital (Zhengzhou University People's Hospital), Zhengzhou 450003, China
| | - Guo-Jun Zhang
- Department of Respiratory Medicine, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Chang WF, Hwu YM, Xu J, Lin CJ, Wang SW, Cheng AS, Lu J, Lu CH, Sung LY. Derivation of Patient Specific Pluripotent Stem Cells Using Clinically Discarded Cumulus Cells. PLoS One 2016; 11:e0165715. [PMID: 27802323 PMCID: PMC5089679 DOI: 10.1371/journal.pone.0165715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 10/17/2016] [Indexed: 11/18/2022] Open
Abstract
Induced pluripotent stem cells (iPSCs) are powerful tools for basic and translational research, as well as regenerative medicine. In routine human in vitro fertilization (IVF) practices, cumulus cells (CCs) are discarded, representing a potential source of biological materials for regenerative medicine. In this study, we derived patient-specific iPSCs using CCs from human infertility clinics for the first time. The human cumulus cell derived iPSCs (hc-iPSCs) were characterized for growth, karyotype, expression of pluripotency genes, and were subjected to embryoid bodies (EBs) and teratoma assays to evaluate their differentiation capacity. Hc-iPSCs display typical iPSC characteristics, and are capable of differentiating into all germ layers in vitro and in vivo. We further show that putative primordial germ cell like cells (PGCLCs) can be derived using hc-iPSCs. Our data demonstrate the feasibility of deriving patient-specific pluripotent stem cells using CCs.
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Affiliation(s)
- Wei-Fang Chang
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Yuh-Ming Hwu
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
- Department of Obstetrics and Gynecology, Mackay Medical College, New Taipei City, Taiwan
- Department of Obstetrics and Gynecology, Mackay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan
| | - Jie Xu
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor, Michigan, United States of America
| | - Chen-Ju Lin
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
- Department of Obstetrics and Gynecology, Mackay Medical College, New Taipei City, Taiwan
| | - Sheng-Wen Wang
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - An-Sheng Cheng
- Yupintang Traditional Chinese Medicine Foundation, Kaohsiung, Taiwan
| | - Jean Lu
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Chung-Hao Lu
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
- * E-mail: (LYS); (CHL)
| | - Li-Ying Sung
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
- Center for Biotechnology, National Taiwan University, Taipei, Taiwan
- Animal Resource Center, National Taiwan University, Taipei, Taiwan
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
- * E-mail: (LYS); (CHL)
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Substrate-mediated reprogramming of human fibroblasts into neural crest stem-like cells and their applications in neural repair. Biomaterials 2016; 102:148-61. [DOI: 10.1016/j.biomaterials.2016.06.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 06/07/2016] [Indexed: 11/22/2022]
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Tian E, Sun G, Sun G, Chao J, Ye P, Warden C, Riggs AD, Shi Y. Small-Molecule-Based Lineage Reprogramming Creates Functional Astrocytes. Cell Rep 2016; 16:781-92. [PMID: 27396343 PMCID: PMC9228989 DOI: 10.1016/j.celrep.2016.06.042] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 04/07/2016] [Accepted: 06/08/2016] [Indexed: 12/28/2022] Open
Abstract
Growing evidence indicates important roles for astrocytes in neurodevelopment and diseases. However, astrocytes and their roles in these processes remain poorly understood. Despite recent progress in reprogramming somatic cells into different types of neural cells, reprogramming to astrocytes has lagged. Here, we show that functional astrocytes can be generated from mammalian fibroblasts using only small molecules. Induced mouse astrocytes resemble primary astrocytes in astrocytic gene expression and epigenomic status and exhibit functional properties in promoting neuronal maturation, glutamate uptake, and calcium signaling. Moreover, these cells can recapitulate the Alexander disease phenotype of protein aggregation when expressing Gfap with a disease-causing mutation. The same compounds can also reprogram human fibroblasts into astroglial progenitor cells that can further mature into functional astrocytes. These chemically induced astrocytes may provide cellular models to uncover roles of astrocytes in normal neurodevelopment and pathogenesis of neurological diseases.
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Affiliation(s)
- E Tian
- Division of Stem Cell Biology Research, Department of Developmental and Stem Cell Biology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA
| | - Guoqiang Sun
- Division of Stem Cell Biology Research, Department of Developmental and Stem Cell Biology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA
| | - Guihua Sun
- Diabetes and Metabolism Research Institute, City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA
| | - Jianfei Chao
- Division of Stem Cell Biology Research, Department of Developmental and Stem Cell Biology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA
| | - Peng Ye
- Division of Stem Cell Biology Research, Department of Developmental and Stem Cell Biology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA
| | - Charles Warden
- Integrative Genomics Core, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA
| | - Arthur D Riggs
- Diabetes and Metabolism Research Institute, City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA
| | - Yanhong Shi
- Division of Stem Cell Biology Research, Department of Developmental and Stem Cell Biology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, CA 91010, USA.
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Deng XY, Wang H, Wang T, Fang XT, Zou LL, Li ZY, Liu CB. Non-viral methods for generating integration-free, induced pluripotent stem cells. Curr Stem Cell Res Ther 2015; 10:153-8. [PMID: 25248676 PMCID: PMC4460285 DOI: 10.2174/1574888x09666140923101914] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Accepted: 09/16/2014] [Indexed: 12/11/2022]
Abstract
Induced pluripotent stem (iPS) cells were created from mouse fibroblasts by induced expression
of Yamanaka factors, Oct3/4, Sox2, Klf4, and c-Myc. This technique has quickly resulted in an exponential
increase in the amount of pluripotency studies, and has provided a valuable tool in regenerative medicine. At
the same time, many methodologies to generate iPS cells have been reported, and are comprised mainly of
viral methods and non-viral methods. Although viral methods may not be applicable for clinical applications, various nonviral
methods have been reported in recent years, including DNA vector-based approaches, transfection of mRNA, transduction
of reprogramming proteins, and use of small molecule compounds. This review summarizes and evaluates these
non-viral methods.
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Anwar MA, Kim S, Choi S. The triumph of chemically enhanced cellular reprogramming: a patent review. Expert Opin Ther Pat 2015; 26:265-80. [PMID: 26593376 DOI: 10.1517/13543776.2016.1118058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION The revolutionary discovery of induced pluripotent stem cells (iPSCs) by Shinya Yamanaka has exposed science to new horizons. However, genetic modifications render reprogrammed cells unstable; for that reason, non-genetic modification approaches are actively under investigation. Among these, the use of small molecules is safe, and these molecules minimally affect the genome. Although iPSCs are ready for clinical trials there are many caveats hindering successful therapy, and small molecules are the best alternative to overcome those caveats. AREAS COVERED Small molecules are playing an active role in generating and improving the quality of iPSCs. In this review, we will highlight the imperative role of small molecules in accelerating the successful translation of basic research into clinical use. Particularly, those ligands that replace the need for reprogramming factors will be discussed. EXPERT OPINION Stem cell research is promising for harvesting medical benefits in near future. The invention of new techniques, mechanisms elucidation, and identification of novel compounds for stem cell creation has certainly established a solid foundation for regenerative medicine. This is the beginning of a new era for the cure of most disabling diseases, and small molecules will have a definite role in successful therapeutic use of iPSCs.
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Affiliation(s)
- Muhammad Ayaz Anwar
- a Department of Molecular Science and Technology , Ajou University , Suwon , South Korea
| | - Songmee Kim
- a Department of Molecular Science and Technology , Ajou University , Suwon , South Korea
| | - Sangdun Choi
- a Department of Molecular Science and Technology , Ajou University , Suwon , South Korea
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Choi B, Park KS, Kim JH, Ko KW, Kim JS, Han DK, Lee SH. Stiffness of Hydrogels Regulates Cellular Reprogramming Efficiency Through Mesenchymal-to-Epithelial Transition and Stemness Markers. Macromol Biosci 2015; 16:199-206. [DOI: 10.1002/mabi.201500273] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 08/26/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Bogyu Choi
- Department of Biomedical Science, CHA University, 335 Pangyo-ro; Bundang-gu; Seongnam-si Gyeonggi-do 463-400 Korea
| | - Kwang-Sook Park
- Department of Biomedical Science, CHA University, 335 Pangyo-ro; Bundang-gu; Seongnam-si Gyeonggi-do 463-400 Korea
- Center for Biomaterials, Korea Institute of Science and Technology, P.O. Box 131; Cheongryang; Seoul 130-650 Republic of Korea
| | - Ji-Ho Kim
- Department of Biomedical Science, CHA University, 335 Pangyo-ro; Bundang-gu; Seongnam-si Gyeonggi-do 463-400 Korea
| | - Kyoung-Won Ko
- Department of Biomedical Science, CHA University, 335 Pangyo-ro; Bundang-gu; Seongnam-si Gyeonggi-do 463-400 Korea
| | - Jin-Su Kim
- Department of Biomedical Science, CHA University, 335 Pangyo-ro; Bundang-gu; Seongnam-si Gyeonggi-do 463-400 Korea
| | - Dong Keun Han
- Center for Biomaterials, Korea Institute of Science and Technology, P.O. Box 131; Cheongryang; Seoul 130-650 Republic of Korea
| | - Soo-Hong Lee
- Department of Biomedical Science, CHA University, 335 Pangyo-ro; Bundang-gu; Seongnam-si Gyeonggi-do 463-400 Korea
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Activation of OCT4 enhances ex vivo expansion of human cord blood hematopoietic stem and progenitor cells by regulating HOXB4 expression. Leukemia 2015. [PMID: 26202933 PMCID: PMC4703453 DOI: 10.1038/leu.2015.189] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Although hematopoietic stem cells (HSC) are the best characterized and the most clinically used adult stem cells, efforts are still needed to understand how to best ex vivo expand these cells. Here we present our unexpected finding that OCT4 is involved in the enhancement of cytokine-induced expansion capabilities of human cord blood (CB) HSC. Activation of OCT4 by Oct4-activating compound 1 (OAC1) in CB CD34(+) cells enhanced ex vivo expansion of HSC, as determined by a rigorously defined set of markers for human HSC, and in vivo short-term and long-term repopulating ability in NSG mice. Limiting dilution analysis revealed that OAC1 treatment resulted in 3.5-fold increase in the number of SCID repopulating cells (SRCs) compared with that in day 0 uncultured CD34(+) cells and 6.3-fold increase compared with that in cells treated with control vehicle. Hematopoietic progenitor cells, as assessed by in vitro colony formation, were also enhanced. Furthermore, we showed that OAC1 treatment led to OCT4-mediated upregulation of HOXB4. Consistently, siRNA-mediated knockdown of HOXB4 expression suppressed effects of OAC1 on ex vivo expansion of HSC. Our study has identified the OCT4-HOXB4 axis in ex vivo expansion of human CB HSC.
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Cheng X, Yoshida H, Raoofi D, Saleh S, Alborzinia H, Wenke F, Göhring A, Reuter S, Mah N, Fuchs H, Andrade-Navarro MA, Adjaye J, Gul S, Utikal J, Mrowka R, Wölfl S. Ethyl 2-((4-Chlorophenyl)amino)thiazole-4-carboxylate and Derivatives Are Potent Inducers of Oct3/4. J Med Chem 2015; 58:5742-50. [PMID: 26143659 DOI: 10.1021/acs.jmedchem.5b00226] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The octamer-binding transcription factor 4 (Oct3/4) is a master gene in the transcriptional regulatory network of pluripotent cells. Repression of Oct3/4 in embryonic stem cells (ESCs) is associated with cell differentiation and loss of pluripotency, whereas forced overexpression in cooperation with other transcriptional factors, such as Nanog, Sox2, and Lin28, can reprogram somatic cells back into pluripotent cells, termed induced pluripotent stem cells (iPSCs). However, random integration and potential tumorigenic transformation caused by viral transduction limit the clinical application of iPSCs. By performing a cell-based high throughput screening (HTS) campaign, we identified several potential small molecules as inducers of Oct3/4 expression. Here we report a lead structure ethyl 2-((4-chlorophenyl)amino)-thiazole-4-carboxylate, termed O4I2, showing high activity in enforcing Oct3/4 expression. On the basis of chemical expansion, we further identified derivatives having increased activities toward Oct3/4 induction. Thus, O4I2 and its derivatives should provide a new class of small molecules suitable for iPSC generation.
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Affiliation(s)
- Xinlai Cheng
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Hiroki Yoshida
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Dena Raoofi
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Sawsan Saleh
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Hamed Alborzinia
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Frank Wenke
- ‡Experimentelle Nephrologie, KIM III, Universitätsklinikum Jena, Am Nonnenplan 2-4, D-07743 Jena, Germany
| | - Axel Göhring
- ‡Experimentelle Nephrologie, KIM III, Universitätsklinikum Jena, Am Nonnenplan 2-4, D-07743 Jena, Germany
| | - Stefanie Reuter
- ‡Experimentelle Nephrologie, KIM III, Universitätsklinikum Jena, Am Nonnenplan 2-4, D-07743 Jena, Germany
| | - Nancy Mah
- §Max Delbrück Center for Molecular Medicine, 13125 Berlin, Germany
| | - Heiko Fuchs
- ∥Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich Heine University, 40225 Duesseldorf, Germany
| | | | - James Adjaye
- ∥Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich Heine University, 40225 Duesseldorf, Germany
| | - Sheraz Gul
- ⊥European Screening Port GmbH, 22525 Hamburg, Germany
| | - Jochen Utikal
- #Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg University, 68167 Mannheim, Germany
| | - Ralf Mrowka
- ‡Experimentelle Nephrologie, KIM III, Universitätsklinikum Jena, Am Nonnenplan 2-4, D-07743 Jena, Germany
| | - Stefan Wölfl
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
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Cheng X, Dimou E, Alborzinia H, Wenke F, Göhring A, Reuter S, Mah N, Fuchs H, Andrade-Navarro MA, Adjaye J, Gul S, Harms C, Utikal J, Klipp E, Mrowka R, Wölfl S. Identification of 2-[4-[(4-Methoxyphenyl)methoxy]-phenyl]acetonitrile and Derivatives as Potent Oct3/4 Inducers. J Med Chem 2015; 58:4976-83. [PMID: 25898186 DOI: 10.1021/acs.jmedchem.5b00144] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Reprogramming somatic cells into induced-pluripotent cells (iPSCs) provides new access to all somatic cell types for clinical application without any ethical controversy arising from the use of embryonic stem cells (ESCs). Established protocols for iPSCs generation based on viral transduction with defined factors are limited by low efficiency and the risk of genetic abnormality. Several small molecules have been reported as replacements for defined transcriptional factors, but a chemical able to replace Oct3/4 allowing the generation of human iPSCs is still unavailable. Using a cell-based High Throughput Screening (HTS) campaign, we identified that 2-[4-[(4-methoxyphenyl)methoxy]phenyl]acetonitrile (1), termed O4I1, enhanced Oct3/4 expression. Structural verification and modification by chemical synthesis showed that O4I1 and its derivatives not only promoted expression and stabilization of Oct3/4 but also enhanced its transcriptional activity in diverse human somatic cells, implying the possible benefit from using this class of compounds in regenerative medicine.
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Affiliation(s)
- Xinlai Cheng
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Eleni Dimou
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Hamed Alborzinia
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Frank Wenke
- ‡Experimentelle Nephrologie, KIM III, Universitätsklinikum Jena, Am Nonnenplan 2-4, D-07743 Jena, Germany
| | - Axel Göhring
- ‡Experimentelle Nephrologie, KIM III, Universitätsklinikum Jena, Am Nonnenplan 2-4, D-07743 Jena, Germany
| | - Stefanie Reuter
- ‡Experimentelle Nephrologie, KIM III, Universitätsklinikum Jena, Am Nonnenplan 2-4, D-07743 Jena, Germany
| | - Nancy Mah
- §Max Delbrück Center for Molecular Medicine, Berlin, Germany
| | - Heiko Fuchs
- ∥Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | | | - James Adjaye
- ∥Institute for Stem Cell Research and Regenerative Medicine, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - Sheraz Gul
- ⊥European Screening Port GmbH, Hamburg, Germany
| | - Christoph Harms
- #Center for Stroke Research Berlin, Department of Experimental Neurology, Charité - Universitätsmedizin Berlin, Charitéplatz 1, D-10117 Berlin, Germany
| | - Jochen Utikal
- ∇Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg University, Mannheim, Germany
| | - Edda Klipp
- ○Theoretical Biophysics, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Ralf Mrowka
- ‡Experimentelle Nephrologie, KIM III, Universitätsklinikum Jena, Am Nonnenplan 2-4, D-07743 Jena, Germany
| | - Stefan Wölfl
- †Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
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Rony IK, Baten A, Bloomfield JA, Islam ME, Billah MM, Islam KD. Inducing pluripotency in vitro: recent advances and highlights in induced pluripotent stem cells generation and pluripotency reprogramming. Cell Prolif 2015; 48:140-56. [PMID: 25643745 DOI: 10.1111/cpr.12162] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 10/05/2014] [Indexed: 12/12/2022] Open
Abstract
Induced pluripotent stem cells (iPSCs) are considered patient-specific counterparts of embryonic stem cells as they originate from somatic cells after forced expression of pluripotency reprogramming factors Oct4, Sox2, Klf4 and c-Myc. iPSCs offer unprecedented opportunity for personalized cell therapies in regenerative medicine. In recent years, iPSC technology has undergone substantial improvement to overcome slow and inefficient reprogramming protocols, and to ensure clinical-grade iPSCs and their functional derivatives. Recent developments in iPSC technology include better reprogramming methods employing novel delivery systems such as non-integrating viral and non-viral vectors, and characterization of alternative reprogramming factors. Concurrently, small chemical molecules (inhibitors of specific signalling or epigenetic regulators) have become crucial to iPSC reprogramming; they have the ability to replace putative reprogramming factors and boost reprogramming processes. Moreover, common dietary supplements, such as vitamin C and antioxidants, when introduced into reprogramming media, have been found to improve genomic and epigenomic profiles of iPSCs. In this article, we review the most recent advances in the iPSC field and potent application of iPSCs, in terms of cell therapy and tissue engineering.
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Affiliation(s)
- I K Rony
- Biotechnology and Genetic Engineering Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh
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Wang J, Huang V, Ye L, Bárcena A, Lin G, Lue TF, Li LC. Identification of small activating RNAs that enhance endogenous OCT4 expression in human mesenchymal stem cells. Stem Cells Dev 2014; 24:345-53. [PMID: 25232932 DOI: 10.1089/scd.2014.0290] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Ectopic overexpression of transcription factors has been used to reprogram cell fate. For example, virus-mediated overexpression of four transcription factors OCT4, SOX2, MYC, and KLF4, known as Yamanaka factors, can convert somatic cells to induced pluripotent stem (iPS) cells. However, gene-specific switch-on of endogenous gene production without the use of foreign DNA remains a challenge. The small RNA machinery that comprised small RNAs and Argonaute proteins is known to silence gene expression, but can be repurposed to activate gene expression when directed to gene promoters, a phenomenon known as RNA activation or RNAa. By screening of dsRNAs targeting OCT4 promoter, we identified a small activating RNA (saRNA) that activated OCT4 expression in several types of human mesenchymal stem cells (MSCs). We found that saRNA-induced OCT4 activation can be further enhanced by a histone deacetylase inhibitor, valproic acid. Furthermore, introducing OCT4 saRNA in combination with viruses encoding the remaining three Yamanaka factors (SOX2, MYC, and KLF4) into MSCs led to the derivation of partially reprogrammed iPS cells. Findings from this study suggest that, with further optimization, RNAa can be a powerful tool to reprogram cell fate by inducing the expression of endogenous genes.
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Affiliation(s)
- Ji Wang
- 1 Department of Urology, University of California , San Francisco, San Francisco, California
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Kang PJ, Moon JH, Yoon BS, Hyeon S, Jun EK, Park G, Yun W, Park J, Park M, Kim A, Whang KY, Koh GY, Oh S, You S. Reprogramming of mouse somatic cells into pluripotent stem-like cells using a combination of small molecules. Biomaterials 2014; 35:7336-45. [PMID: 24881998 DOI: 10.1016/j.biomaterials.2014.05.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 05/05/2014] [Indexed: 12/16/2022]
Abstract
Somatic cells can be reprogrammed to generate induced pluripotent stem cells (iPSCs) by overexpression of four transcription factors, Oct4, Klf4, Sox2, and c-Myc. However, exogenous expression of pluripotency factors raised concerns for clinical applications. Here, we show that iPS-like cells (iPSLCs) were generated from mouse somatic cells in two steps with small molecule compounds. In the first step, stable intermediate cells were generated from mouse astrocytes by Bmi1. These cells called induced epiblast stem cell (EpiSC)-like cells (iEpiSCLCs) are similar to EpiSCs in terms of expression of specific markers, epigenetic state, and ability to differentiate into three germ layers. In the second step, treatment with MEK/ERK and GSK3 pathway inhibitors in the presence of leukemia inhibitory factor resulted in conversion of iEpiSCLCs into iPSLCs that were similar to mESCs, suggesting that Bmi1 is sufficient to reprogram astrocytes to partially reprogrammed pluripotency. Next, Bmi1 function was replaced with Shh activators (oxysterol and purmorphamine), which demonstrating that combinations of small molecules can compensate for reprogramming factors and are sufficient to directly reprogram mouse somatic cells into iPSLCs. The chemically induced pluripotent stem cell-like cells (ciPSLCs) showed similar gene expression profiles, epigenetic status, and differentiation potentials to mESCs.
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Affiliation(s)
- Phil Jun Kang
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Jai-Hee Moon
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Byung Sun Yoon
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea; StemLab, Venture Incubation Center Korea University, Seoul 136-701, Republic of Korea
| | - Solji Hyeon
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Eun Kyoung Jun
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea; StemLab, Venture Incubation Center Korea University, Seoul 136-701, Republic of Korea
| | - Gyuman Park
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Wonjin Yun
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Jiyong Park
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Minji Park
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Aeree Kim
- Department of Pathology, College of Medicine, Korea University Guro Hospital, Seoul 152-703, Republic of Korea
| | - Kwang Youn Whang
- Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Gou Young Koh
- National Research Laboratory of Vascular Biology and Stem Cells, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea
| | - Sejong Oh
- Division of Animal Science, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Seungkwon You
- Laboratory of Cell Function Regulation, Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Republic of Korea.
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Abstract
With the discovery of induced pluripotent stem (iPS) cells, it is now possible to convert differentiated somatic cells into multipotent stem cells that have the capacity to generate all cell types of adult tissues. Thus, there is a wide variety of applications for this technology, including regenerative medicine, in vitro disease modeling, and drug screening/discovery. Although biological and biochemical techniques have been well established for cell reprogramming, bioengineering technologies offer novel tools for the reprogramming, expansion, isolation, and differentiation of iPS cells. In this article, we review these bioengineering approaches for the derivation and manipulation of iPS cells and focus on their relevance to regenerative medicine.
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Affiliation(s)
- Karen K Hirschi
- Yale Cardiovascular Research Center and Yale Stem Cell Center, Yale University School of Medicine, New Haven, Connecticut 06511;
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Feltes BC, Bonatto D. Combining small molecules for cell reprogramming through an interatomic analysis. MOLECULAR BIOSYSTEMS 2014; 9:2741-63. [PMID: 24056910 DOI: 10.1039/c3mb70159j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The knowledge available about the application and generation of induced pluripotent stem cells (iPSC) has grown since their discovery, and new techniques to enhance the reprogramming process have been described. Among the new approaches to induce iPSC that have gained great attention is the use of small molecules for reprogramming. The application of small molecules, unlike genetic manipulation, provides for control of the reprogramming process through the shifting of concentrations and the combination of different molecules. However, different researchers have reported the use of "reprogramming cocktails" with variable results and drug combinations. Thus, the proper combination of small molecules for successful and enhanced reprogramming is a matter for discussion. However, testing all potential drug combinations in different cell lineages is very costly and time-consuming. Therefore, in this article, we discuss the use of already employed molecules for iPSC generation, followed by the application of systems chemo-biology tools to create different data sets of protein-protein (PPI) and chemical-protein (CPI) interaction networks based on the knowledge of already used and new reprogramming cocktail combinations. We further analyzed the biological processes associated with PPI-CPI networks and provided new potential protein targets to be inhibited or expressed for stem cell reprogramming. In addition, we applied a new interference analysis to prospective targets that could negatively affect the classical pluripotency-associated factors (SOX2, NANOG, KLF4 and OCT4) and thus potentially improve reprogramming protocols.
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Affiliation(s)
- Bruno César Feltes
- Centro de Biotecnologia da Universidade Federal do Rio Grande do Sul, Departamento de Biologia Molecular e Biotecnologia, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500 - Prédio 43421 - Sala 219, Porto Alegre, Caixa Postal 15005, RS - Brazil.
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Cheng L, Hu W, Qiu B, Zhao J, Yu Y, Guan W, Wang M, Yang W, Pei G. Generation of neural progenitor cells by chemical cocktails and hypoxia. Cell Res 2014; 24:665-79. [PMID: 24638034 PMCID: PMC4042166 DOI: 10.1038/cr.2014.32] [Citation(s) in RCA: 171] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 02/25/2014] [Accepted: 02/27/2014] [Indexed: 02/07/2023] Open
Abstract
Neural progenitor cells (NPCs) can be induced from somatic cells by defined factors. Here we report that NPCs can be generated from mouse embryonic fibroblasts by a chemical cocktail, namely VCR (V, VPA, an inhibitor of HDACs; C, CHIR99021, an inhibitor of GSK-3 kinases and R, Repsox, an inhibitor of TGF-β pathways), under a physiological hypoxic condition. These chemical-induced NPCs (ciNPCs) resemble mouse brain-derived NPCs regarding their proliferative and self-renewing abilities, gene expression profiles, and multipotency for different neuroectodermal lineages in vitro and in vivo. Further experiments reveal that alternative cocktails with inhibitors of histone deacetylation, glycogen synthase kinase, and TGF-β pathways show similar efficacies for ciNPC induction. Moreover, ciNPCs can also be induced from mouse tail-tip fibroblasts and human urinary cells with the same chemical cocktail VCR. Thus our study demonstrates that lineage-specific conversion of somatic cells to NPCs could be achieved by chemical cocktails without introducing exogenous factors.
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Affiliation(s)
- Lin Cheng
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China
| | - Wenxiang Hu
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China
| | - Binlong Qiu
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China
| | - Jian Zhao
- State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China
| | - Yongchun Yu
- Institute of Neurobiology, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - Wuqiang Guan
- Institute of Neurobiology, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - Min Wang
- Institute of Neurobiology, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - Wuzhou Yang
- Institute of Neurobiology, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - Gang Pei
- 1] State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China [2] School of Life Science and Technology, Tongji University, Shanghai 200092, China
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