1
|
Lim SK, Khoo BY. An overview of mesenchymal stem cells and their potential therapeutic benefits in cancer therapy. Oncol Lett 2021; 22:785. [PMID: 34594426 PMCID: PMC8456491 DOI: 10.3892/ol.2021.13046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 07/27/2021] [Indexed: 12/15/2022] Open
Abstract
There has been increased interest in using stem cells for regenerative medicine and cancer therapy in the past decade. Mesenchymal stem cells (MSCs) are among the most studied stem cells due to their unique characteristics, such as self-renewal and developmental potency to differentiate into numerous cell types. MSC use has fewer ethical challenges compared with other types of stem cells. Although a number of studies have reported the beneficial effects of MSC-based therapies in treating various diseases, their contribution to cancer therapy remains controversial. The behaviour of MSCs is determined by the interaction between intrinsic transcriptional genes and extrinsic environmental factors. Numerous studies continue to emerge, as there is no denying the potential of MSCs to treat a wide variety of human afflictions. Therefore, the present review article provided an overview of MSCs and their differences compared with embryonic stem cells, and described the molecular mechanisms involved in maintaining their stemness. In addition, the article examined the therapeutic application of stem cells in the field of cancer. The present article also discussed the current divergent roles of MSCs in cancer therapy and the future potential in this field.
Collapse
Affiliation(s)
- Shern Kwok Lim
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Boon Yin Khoo
- Institute for Research in Molecular Medicine, Universiti Sains Malaysia, 11800 Penang, Malaysia
| |
Collapse
|
2
|
Ma SX, Tang LB, Chen ZH, Wei ML, Tang ZJ, Zheng YH, Zong G, Li J. Effects of shikonin on the development of ovarian follicles and female germline stem cells. J Int Med Res 2021; 49:3000605211029461. [PMID: 34325571 PMCID: PMC8327240 DOI: 10.1177/03000605211029461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Objective To investigate the effects and potential mechanism of action of shikonin (SHK) on the development of ovarian follicles and female germline stem cells (FGSCs). Methods Female Kunming adult mice were administered SHK (0, 20 and 50 mg/kg) by oral gavage. Cultures of FGSCs were treated with SHK 32 μmol/l for 24 h. The ovarian index in mouse ovaries was calculated. Numbers of primordial, primary and atretic follicles were counted. Germline stem cell markers and apoptosis were examined. Levels of glutathione (GSH), superoxide dismutase (SOD) and reactive oxygen species (ROS) were measured. Results Both doses of SHK significantly decreased the ovarian index, the numbers of primordial follicles, primary follicles and antral follicles in mice. SHK significantly increased the numbers of atretic follicles and atretic corpora lutea. SHK promoted apoptosis in vivo and in vitro. SHK significantly decreased the levels of the germline stem cell markers. SHK significantly lowered GSH levels and the activity of SOD in the peripheral blood from mice, whereas SHK significantly elevated cellular ROS content in FGSCs. Conclusions These current results suggested that follicular development and FGSCs were suppressed by SHK through the induction of apoptosis and oxidative stress might be involved in this pathological process.
Collapse
Affiliation(s)
- Shu-Xin Ma
- Key Laboratory of Reproductive Physiology and Pathology of Jiangxi Province, Nanchang University, Nanchang, Jiangxi Province, China.,Queen Mary School, Jiangxi Medical College of Nanchang University, Nanchang, Jiangxi Province, China
| | - Li-Bo Tang
- Second Clinical Medical College, Nanchang University, Nanchang, Jiangxi Province, China
| | - Zhi-Hang Chen
- Key Laboratory of Reproductive Physiology and Pathology of Jiangxi Province, Nanchang University, Nanchang, Jiangxi Province, China.,Queen Mary School, Jiangxi Medical College of Nanchang University, Nanchang, Jiangxi Province, China
| | - Min-Li Wei
- Key Laboratory of Reproductive Physiology and Pathology of Jiangxi Province, Nanchang University, Nanchang, Jiangxi Province, China
| | - Zi-Juan Tang
- Key Laboratory of Reproductive Physiology and Pathology of Jiangxi Province, Nanchang University, Nanchang, Jiangxi Province, China
| | - Yue-Hui Zheng
- Key Laboratory of Reproductive Physiology and Pathology of Jiangxi Province, Nanchang University, Nanchang, Jiangxi Province, China
| | - Guo Zong
- Shanghai Horizon Medical Technology Co., Ltd, Shanghai, China
| | - Jia Li
- Key Laboratory of Reproductive Physiology and Pathology of Jiangxi Province, Nanchang University, Nanchang, Jiangxi Province, China
| |
Collapse
|
3
|
Tao Y, Liu X, Cui L, Liu X, Chen Y, He Z, Ji M, Gao Z, Li N, Wan Z, Yu Z. Oct4 plays a role in 2, 3, 7, 8 - tetrachlorobenzo-p-dioxin (TCDD) inducing cleft palate and inhibiting mesenchymal proliferation. Toxicology 2020; 438:152444. [PMID: 32283119 DOI: 10.1016/j.tox.2020.152444] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/17/2020] [Accepted: 03/25/2020] [Indexed: 02/07/2023]
Abstract
As a common birth defect, Cleft palate can be caused by the disturbance during the developmental process of the palatal shelves. The 2,3,7,8-tetrachlorodibenzo- p-dioxin (TCDD) is a well-known environmental teratogenic agent for cleft palate and Aryl hydrocarbon receptor (AhR) pathway can be activated by dioxins. Oct4 as a pluripotent stem cell transcription factor is also involved in the process of embryonic development. The AHR and retinoid receptors have cross-talk at CYP1A1 (cytochrome P450, family 1, subfamily A, polypeptide 1) promoter. There are also bidirectional talk between AhR and Oct4. In this study, we used C57/BL6 N mice and TCDD (64 μg/Kg body weight) to establish a model of fetal cleft palate to observe the effects of dioxin on fetal mesenchymal proliferation and apoptosis, and explore the role of Oct4 in inducing cleft palate. The results showed that dioxin inhibited mesenchymal proliferation and promoted apoptosis. In addition, dioxin inhibited Oct4 expression, and preliminary data suggest that hypermethylation of the Oct4 promoter may be a putative mechanism, suggesting that TCDD might induce cleft palate by inhibiting the proliferation of palatal mesenchymal cells mediated by Oct4.
Collapse
Affiliation(s)
- Yuchang Tao
- School of Public Health, Zhengzhou University, No. 100 of Science Road, Zhengzhou, 450001, China
| | - Xiaozhuan Liu
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, No. 7 of Weiwu Road, Zhengzhou, 450001, China
| | - Lingling Cui
- School of Public Health, Zhengzhou University, No. 100 of Science Road, Zhengzhou, 450001, China
| | - Xinxin Liu
- School of Public Health, Zhengzhou University, No. 100 of Science Road, Zhengzhou, 450001, China
| | - Yao Chen
- School of Public Health, Zhengzhou University, No. 100 of Science Road, Zhengzhou, 450001, China
| | - Zhidong He
- School of Public Health, Zhengzhou University, No. 100 of Science Road, Zhengzhou, 450001, China
| | - Mengmeng Ji
- School of Public Health, Zhengzhou University, No. 100 of Science Road, Zhengzhou, 450001, China
| | - Zhan Gao
- The Fifth Affiliated Hospital of Zhengzhou University, No. 3 of Kangfu Front Street, Zhengzhou, 450052, China
| | - Ning Li
- Henan Agricultural University, No. 63 of Agricultural Road, Zhengzhou, 450002, China
| | - Zhongxiao Wan
- School of Public Health, Zhengzhou University, No. 100 of Science Road, Zhengzhou, 450001, China.
| | - Zengli Yu
- School of Public Health, Zhengzhou University, No. 100 of Science Road, Zhengzhou, 450001, China.
| |
Collapse
|
4
|
Kim GD, Choi JH, Lim SM, Jun JH, Moon JW, Kim GJ. Alterations in IL-6/STAT3 Signaling by Korean Mistletoe Lectin Regulate the Self-Renewal Activity of Placenta-Derived Mesenchymal Stem Cells. Nutrients 2019; 11:E2604. [PMID: 31671670 DOI: 10.3390/nu11112604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/19/2019] [Accepted: 10/25/2019] [Indexed: 12/13/2022] Open
Abstract
Korean mistletoe (Viscum album L. var. coloratum) lectin (VCA) is known as an anticancer drug. However, it is not clear whether VCA affects the self-renewal activity of mesenchymal stem cells (MSCs). Therefore, the objectives of this study were to analyze the effect of VCA on the proliferation of MSCs and expression of stemness markers. We also evaluated the usefulness of placenta-derived MSCs (PD-MSCs) as a screening tool. VCA was stably administered to MSCs, and analyzed self-renewal activities. The effect of IL-6 signaling on MSC proliferation was explored by quantitative methylation-specific PCR (qMSP) and western blot analysis. Compared with the control condition, low concentrations of VCA (10 pg/mL) induced an increase in the self-renewal activity of MSCs. Interestingly, a low concentration of VCA promoted IL-6 signaling in PD-MSCs through altered IL-6/STAT3 gene methylation. Furthermore, inhibition of IL-6 expression in PD-MSCs using an anti-IL-6 antibody caused a decrease in their self-renewal activity through IL-6/STAT3 signaling by altering IL-6/STAT3 gene methylation. These findings provide helpful data for understanding the mechanism of MSC self-renewal via VCA and show that VCA may be useful as a functional natural product for developing efficient therapies using placenta-derived stem cells.
Collapse
|
5
|
Ayala-Cuellar AP, Kim CW, Hwang KA, Kang JH, Lee G, Cho J, Choi KC. Characterization of canine adipose tissue-derived mesenchymal stem cells immortalized by SV40-T retrovirus for therapeutic use. J Cell Physiol 2019; 234:16630-16642. [PMID: 30779347 DOI: 10.1002/jcp.28338] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 01/24/2023]
Abstract
Canine mesenchymal stem cells (cMSCs) are gaining popularity in the veterinary field as a regenerative therapy. But, their limited culture lifespan makes it an obstacle for preclinical investigation and therapeutic use. In this study, primary canine adipose tissue-derived MSCs (PCAT-MSCs) were isolated from adipose tissue and were transfected with the SV40-T retrovirus resulting in a life-extended immortalized canine adipose tissue-derived MSCs (ICAT-MSCs). A comparison was made through the characterization of both PCAT-MSCs and ICAT-MSCs. Both showed a fibroblastic morphology; ICAT-MSCs showed a higher potential of colony formation compared with PCAT-MSCs and a reduced population doubling time; stem cell markers SOX2 and NANOG were expressed in both cell lines; karyotyping analysis showed no abnormalities in both PCAT-MSCs and ICAT-MSCs; both cell lines were CD90+ , CD44 + , and CD45 - ; both generated chondrogenic pellet; in osteogenic differentiation both showed upregulation of Osterix, a master transcriptome of osteogenesis, but in PCAT-MSCs, an upregulation of SOX2 was also observed. In conclusion, ICAT-MSCs showed similar characteristics with PCAT-MSCs, thus established as an easy to access platform for studies on better understanding about cMSCs nature.
Collapse
Affiliation(s)
- Ana Patricia Ayala-Cuellar
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Cho-Won Kim
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Kyung-A Hwang
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Ji-Houn Kang
- Laboratory of Veterinary Internal Medicine and Neuroendocrinology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Gabsang Lee
- Department of Neurology, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Jaejin Cho
- Department of Dental Regenerative Biotechnology, Seoul National University, Seoul, Republic of Korea
| | - Kyung-Chul Choi
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea.,Institute of Life Science and Bioengineering, TheraCell Bio & Science, Cheongju, Chungbuk, Republic of Korea
| |
Collapse
|
6
|
Choi Y, Yoon DS, Lee KM, Choi SM, Lee MH, Park KH, Han SH, Lee JW. Enhancement of Mesenchymal Stem Cell-Driven Bone Regeneration by Resveratrol-Mediated SOX2 Regulation. Aging Dis 2019; 10:818-833. [PMID: 31440387 PMCID: PMC6675538 DOI: 10.14336/ad.2018.0802] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/02/2018] [Indexed: 12/16/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are an attractive cell source for regenerative medicine. However, MSCs age rapidly during long-term ex vivo culture and lose their therapeutic potential before they reach effective cell doses (ECD) for cell therapy. Thus, a prerequisite for effective MSC therapy is the development of cell culture methods to preserve the therapeutic potential during long-term ex vivo cultivation. Resveratrol (RSV) has been highlighted as a therapeutic candidate for bone disease. Although RSV treatment has beneficial effects on bone-forming cells, in vivo studies are lacking. The current study showed that long-term (6 weeks from primary culture date)-cultured MSCs with RSV induction retained their proliferative and differentiation potential despite reaching ECD. The mechanism of RSV action depends entirely on the SIRT1-SOX2 axis in MSC culture. In a rat calvarial defect model, RSV induction significantly improved bone regeneration after MSC transplantation. This study demonstrated an example of efficient MSC therapy for treating bone defects by providing a new strategy using the plant polyphenol RSV.
Collapse
Affiliation(s)
- Yoorim Choi
- 1Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 03722, South Korea.,2Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, South Korea
| | - Dong Suk Yoon
- 3Department of Internal Medicine, Brody School of Medicine at East Carolina University, Greenville, North Carolina 27834, USA
| | - Kyoung-Mi Lee
- 1Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 03722, South Korea.,4Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Seong Mi Choi
- 1Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 03722, South Korea.,2Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, South Korea
| | - Myon-Hee Lee
- 3Department of Internal Medicine, Brody School of Medicine at East Carolina University, Greenville, North Carolina 27834, USA.,5Lineberger Comprehensive Cancer Center, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Kwang Hwan Park
- 1Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 03722, South Korea
| | - Seung Hwan Han
- 6Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 135-720, South Korea
| | - Jin Woo Lee
- 1Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul 03722, South Korea.,2Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, South Korea.,4Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul 03722, South Korea
| |
Collapse
|
7
|
Lu Y, Qu H, Qi D, Xu W, Liu S, Jin X, Song P, Guo Y, Jia Y, Wang X, Li H, Li Y, Quan C. OCT4 maintains self-renewal and reverses senescence in human hair follicle mesenchymal stem cells through the downregulation of p21 by DNA methyltransferases. Stem Cell Res Ther 2019; 10:28. [PMID: 30646941 PMCID: PMC6334457 DOI: 10.1186/s13287-018-1120-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 12/11/2018] [Accepted: 12/20/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Self-renewal is dependent on an intrinsic gene regulatory network centered on OCT4 and on an atypical cell cycle G1/S transition, which is also regulated by OCT4. p21, a gene negatively associated with self-renewal and a senescence marker, is a member of the universal cyclin-dependent kinase inhibitors (CDKIs) and plays critical roles in the regulation of the G1/S transition. The expression of p21 can be regulated by OCT4-targeted DNA methyltransferases (DNMTs), which play distinct roles in gene regulation and maintaining pluripotency properties. The aim of this study was to determine the role of OCT4 in the regulation of self-renewal and senescence in human hair follicle mesenchymal stem cells (hHFMSCs) and to characterize the molecular mechanisms involved. METHODS A lentiviral vector was used to ectopically express OCT4. The influences of OCT4 on the self-renewal and senescence of hHFMSCs were investigated. Next-generation sequencing (NGS) was performed to identify the downstream genes of OCT4 in this process. Methylation-specific PCR (MSP) analysis was performed to measure the methylation level of the p21 promoter region. p21 was overexpressed in hHFMSCsOCT4 to test its downstream effect on OCT4. The regulatory effect of OCT4 on DNMTs was examined by ChIP assay. 5-aza-dC/zebularine was used to inhibit the expression of DNMTs, and then self-renewal properties and senescence in hHFMSCs were detected. RESULTS The overexpression of OCT4 promoted proliferation, cell cycle progression, and osteogenic differentiation capacity of hHFMSCs. The cell senescence of hHFMSCs was markedly suppressed due to the ectopic expression of OCT4. Through NGS, we identified 2466 differentially expressed genes (DEGs) between hHFMSCsOCT4 and hHFMSCsEGFP, including p21, which was downregulated. The overexpression of p21 abrogated the proliferation and osteogenic differentiation capacity of hHFMSCsOCT4 and promoted cell senescence. OCT4 enhanced the transcription of DNMT genes, leading to an elevation in the methylation of the p21 promoter. The inhibition of DNMTs reversed the OCT4-induced p21 reduction, depleted the self-renewal of hHFMSCsOCT4, and triggered cell senescence. CONCLUSIONS OCT4 maintains the self-renewal ability of hHFMSCs and reverses senescence by suppressing the expression of p21 through the upregulation of DNMTs.
Collapse
Affiliation(s)
- Yan Lu
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Huinan Qu
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Da Qi
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Wenhong Xu
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Shutong Liu
- Cell Processing Section, Department of Transfusion, Clinical Center, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Xiangshu Jin
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Peiye Song
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Yantong Guo
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Yiyang Jia
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Xinqi Wang
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Hairi Li
- Department of Cellular and Molecular Medicine, University of California, San Diego, CA, 92093-0651, USA
| | - Yulin Li
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China
| | - Chengshi Quan
- The Key Laboratory of Pathobiology, Ministry of Education, Department of Pathology, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, 130021, China.
| |
Collapse
|
8
|
Wu S, Han N, Zheng Y, Hu C, Lei Y. The role of Snf5 in the osteogenic differentiation potential during replicative senescence of rat mesenchymal stromal cells. Mech Ageing Dev 2018; 171:1-6. [PMID: 29398003 DOI: 10.1016/j.mad.2018.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/08/2018] [Accepted: 01/24/2018] [Indexed: 11/18/2022]
Abstract
The osteogenic capacities of bone marrow-derived stromal cells (BMSCs) diminish during replicative senescence, and these changes affect the success of therapeutic application of BMSCs. In this study, we sought to explore the molecular mechanisms underlying the osteogenic differentiation capacities that occur during replicative senescence. It is well known that Oct4 is a key transcription factor essential for maintaining differentiation capacities of the stem cells. In this study, we found that BMSCs at passage 6 (replicative senescent BMSCs) showed marked decreases in the osteogenic differentiation potential and the level of Oct4. These were accompanied by reduced levels of Snf5 and histone H3 lysine-4 trimethylation (H3K4me3) in the Oct4 promoter. In BMSCs at passage 2, knockdown of Snf5 diminished expression of Oct4 and disrupted the up-regulation of alkaline phosphatase (ALP) and runt-related transcription factor 2 (Runx2) after osteogenic differentiation induction, which was accompanied by a reduction in Snf5 and H3K4me3 binding to the Oct4 promoter. These findings indicate that the decreased level of Snf5 binding to the promoter region of the Oct4 gene down-regulated the expression of Oct4, which may be the mechanism underlying the decline in osteogenic capacities in replicative senescent BMSCs.
Collapse
Affiliation(s)
- Shangrong Wu
- Department of Anatomy and Embryology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, PR China
| | - Nana Han
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Yong Zheng
- Department of Anatomy and Embryology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, PR China.
| | - Chengjun Hu
- Department of Anatomy and Embryology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, PR China
| | - Yueshan Lei
- Department of Anatomy and Embryology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, PR China
| |
Collapse
|
9
|
Si Y, Bai J, Wu J, Li Q, Mo Y, Fang R, Lai W. LncRNA PlncRNA‑1 regulates proliferation and differentiation of hair follicle stem cells through TGF‑β1‑mediated Wnt/β‑catenin signal pathway. Mol Med Rep 2017; 17:1191-1197. [PMID: 29115537 DOI: 10.3892/mmr.2017.7944] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 09/27/2017] [Indexed: 11/06/2022] Open
Abstract
The present study demonstrated that hair follicle stem cells (HFSc) have multidirectional differentiation potential and participate in skin wound healing processes. Long non‑coding RNAs (lncRNAs) are defined as non‑protein coding transcripts longer than 200 nucleotides, which are important in the proliferation and differentiation of cells. The purpose of the present study was to investigate the role of PlncRNA‑1 in the proliferation and differentiation of HFSc. Results revealed that PlncRNA‑1, transforming growth factor (TGF)‑β1, Wnt and β‑catenin expression levels were significantly downregulated in HFSc. PlncRNA‑1 transfection promoted proliferation and differentiation of HFSc. TGF‑β1, Wnt and β‑catenin expression levels were upregulated in HFSc following transfection of PlncRNA‑1. Results demonstrated that TGF‑β1 inhibitor LY2109761 blocked proliferation and differentiation of HFSc promoted by PlncRNA‑1 transfection. In addition, TGF‑β1 inhibitor LY2109761 led to decreased Wnt and β‑catenin expression levels in HFSc. Furthermore, PlncRNA‑1 transfection stimulated the cell cycle of HFSc, whereas TGF‑β1 inhibitor LY2109761 inhibited the cell cycle of HFSc and decreased the acceleration of the cell cycle induced by PlncRNA‑1 transfection. In conclusion, these findings suggest that PlncRNA‑1 may promote proliferation and differentiation of HFSc through upregulation of TGF‑β1‑mediated Wnt/β‑catenin signaling pathway.
Collapse
Affiliation(s)
- Yuan Si
- Department of Dermatology, The Third Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510180, P.R. China
| | - Jingzhu Bai
- Department of Dermatology, Guangzhou First People's Hospital, Guangzhou, Guangdong 510630, P.R. China
| | - Jiang Wu
- Department of Dermatology, Guangzhou First People's Hospital, Guangzhou, Guangdong 510630, P.R. China
| | - Qun Li
- Department of Dermatology, Guangzhou First People's Hospital, Guangzhou, Guangdong 510630, P.R. China
| | - You Mo
- Department of Dermatology, Guangzhou First People's Hospital, Guangzhou, Guangdong 510630, P.R. China
| | - Ruihua Fang
- Department of Dermatology, Guangzhou First People's Hospital, Guangzhou, Guangdong 510630, P.R. China
| | - Wei Lai
- Department of Dermatology, The Third Affiliated Hospital, Sun Yat‑sen University, Guangzhou, Guangdong 510180, P.R. China
| |
Collapse
|
10
|
Huang Y, Ding L, Shao Y, Chen Z, Shen B, Ma Y, Zhu L, Wei Z. Integrin-Linked Kinase Improves Functional Recovery of Diabetic Cystopathy and Mesenchymal Stem Cell Survival and Engraftment in Rats. Can J Diabetes 2017; 41:312-321. [DOI: 10.1016/j.jcjd.2016.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 07/15/2016] [Accepted: 11/01/2016] [Indexed: 01/27/2023]
|
11
|
Nowakowski A, Walczak P, Lukomska B, and Janowski M. Genetic engineering of mesenchymal stem cells to induce their migration and survival. Stem Cells Int. 2016;1:1-9. [PMID: 27242906 PMCID: PMC4868914 DOI: 10.1155/2016/4956063] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 02/22/2016] [Accepted: 03/14/2016] [Indexed: 12/20/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are very attractive for regenerative medicine due to their relatively easy derivation and broad range of differentiation capabilities, either naturally or induced through cell engineering. However, efficient methods of delivery to diseased tissues and the long-term survival of grafted cells still need improvement. Here, we review genetic engineering approaches designed to enhance the migratory capacities of MSCs, as well as extend their survival after transplantation by the modulation of prosurvival approaches, including prevention of senescence and apoptosis. We highlight some of the latest examples that explore these pivotal points, which have great relevance in cell-based therapies.
Collapse
|
12
|
Liu L, Peng Z, Xu Z, Wei X. XPC Promotes Pluripotency of Human Dental Pulp Cells through Regulation of Oct-4/Sox2/c-Myc. Stem Cells Int 2016; 2016:3454876. [PMID: 27127517 DOI: 10.1155/2016/3454876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 03/08/2016] [Accepted: 03/13/2016] [Indexed: 01/08/2023] Open
Abstract
Introduction. Xeroderma pigmentosum group C (XPC), essential component of multisubunit stem cell coactivator complex (SCC), functions as the critical factor modulating pluripotency and genome integrity through interaction with Oct-4/Sox2. However, its specific role in regulating pluripotency and multilineage differentiation of human dental pulp cells (DPCs) remains unknown. Methods. To elucidate the functional role XPC played in pluripotency and multilineage differentiation of DPCs, expressions of XPC in DPCs with long-term culture were examined by real-time PCR and western blot. DPCs were transfected with lentiviral-mediated human XPC gene; then transfection rate was investigated by real-time PCR and western blot. Cell cycle, apoptosis, proliferation, senescence, multilineage differentiation, and expression of Oct-4/Sox2/c-Myc in transfected DPCs were examined. Results. XPC, Oct-4, Sox2, and c-Myc were downregulated at P7 compared with P3 in DPCs with long-term culture. XPC genes were upregulated in DPCs at P2 after transfection and maintained high expression level at P3 and P7. Cell proliferation, PI value, and telomerase activity were enhanced, whereas apoptosis was suppressed in transfected DPCs. Oct-4/Sox2/c-Myc were significantly upregulated, and multilineage differentiation in DPCs with XPC overexpression was enhanced after transfection. Conclusions. XPC plays an essential role in the modulation of pluripotency and multilineage differentiation of DPCs through regulation of Oct-4/Sox2/c-Myc.
Collapse
|
13
|
Yoon DS, Choi Y, Jang Y, Lee M, Choi WJ, Kim SH, Lee JW. SIRT1 directly regulates SOX2 to maintain self-renewal and multipotency in bone marrow-derived mesenchymal stem cells. Stem Cells 2015; 32:3219-31. [PMID: 25132403 DOI: 10.1002/stem.1811] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 07/16/2014] [Indexed: 12/27/2022]
Abstract
SOX2 is crucial for the maintenance of the self-renewal capacity and multipotency of mesenchymal stem cells (MSCs); however, the mechanism by which SOX2 is regulated remains unclear. Here, we report that RNA interference of sirtuin 1 (SIRT1) in human bone marrow (BM)-derived MSCs leads to a decrease of SOX2 protein, resulting in the deterioration of the self-renewal and differentiation capacities of BM-MSCs. Using immunoprecipitation, we demonstrated direct binding between SIRT1 and SOX2 in HeLa cells overexpressing SOX2. We further discovered that the RNA interference of SIRT1 induces the acetylation, nuclear export, and ubiquitination of SOX2, leading to proteasomal degradation in BM-MSCs. SOX2 suppression by trichostatin A (TSA), a known histone deacetylase inhibitor, was reverted by treatment with resveratrol (0.1 and 1 µM), a known activator of SIRT1 in BM-MSCs. Furthermore, 0.1 and 1 µM resveratrol reduced TSA-mediated acetylation and ubiquitination of SOX2 in BM-MSCs. SIRT1 activation by resveratrol enhanced the colony-forming ability and differentiation potential to osteogenic and adipogenic lineages in a dose-dependent manner. However, the enhancement of self-renewal and multipotency by resveratrol was significantly decreased to basal levels by RNA interference of SOX2. These results strongly suggest that the SIRT1-SOX2 axis plays an important role in maintaining the self-renewal capability and multipotency of BM-MSCs. In conclusion, our findings provide evidence for positive SOX2 regulation by post-translational modification in BM-MSCs through the inhibition of nuclear export and subsequent ubiquitination, and demonstrate that SIRT1-mediated deacetylation contributes to maintaining SOX2 protein in the nucleus.
Collapse
Affiliation(s)
- Dong Suk Yoon
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, South Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, South Korea
| | | | | | | | | | | | | |
Collapse
|
14
|
Liu P, Cai J, Dong D, Chen Y, Liu X, Wang Y, Zhou Y. Effects of SOX2 on Proliferation, Migration and Adhesion of Human Dental Pulp Stem Cells. PLoS One 2015; 10:e0141346. [PMID: 26496354 PMCID: PMC4619695 DOI: 10.1371/journal.pone.0141346] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 10/07/2015] [Indexed: 01/09/2023] Open
Abstract
As a key factor for cell pluripotent and self-renewing phenotypes, SOX2 has attracted scientists’ attention gradually in recent years. However, its exact effects in dental pulp stem cells (DPSCs) are still unclear. In this study, we mainly investigated whether SOX2 could affect some biological functions of DPSCs. DPSCs were isolated from the dental pulp of human impacted third molar. SOX2 overexpressing DPSCs (DPSCs-SOX2) were established through retroviral infection. The effect of SOX2 on cell proliferation, migration and adhesion ability was evaluated with CCK-8, trans-well system and fibronectin-induced cell attachment experiment respectively. Whole genome expression of DPSCs-SOX2 was analyzed with RNA microarray. Furthermore, a rescue experiment was performed with SOX2-siRNA in DPSC-SOX2 to confirm the effect of SOX2 overexpression in DPSCs. We found that SOX2 overexpression could result in the enhancement of cell proliferation, migration, and adhesion in DPSCs obviously. RNA microarray analysis indicated that some key genes in the signal pathways associated with cell cycle, migration and adhesion were upregulated in different degree, and the results were further confirmed with qPCR and western-blot. Finally, DPSC-SOX2 transfected with SOX2-siRNA showed a decrease of cell proliferation, migration and adhesion ability, which further confirmed the biological effect of SOX2 in human DPSCs. This study indicated that SOX2 could improve the cell proliferation, migration and adhesion ability of DPSCs through regulating gene expression about cell cycle, migration and adhesion, and provided a novel strategy to develop seed cells with strong proliferation, migration and adhesion ability for tissue engineering.
Collapse
Affiliation(s)
- Pengfei Liu
- Department of Regenerative Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Jinglei Cai
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Delu Dong
- Department of Regenerative Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
| | - Yaoyu Chen
- Department of Regenerative Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Xiaobo Liu
- Department of Regenerative Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Yi Wang
- Department of Regenerative Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
| | - Yulai Zhou
- Department of Regenerative Medicine, School of Pharmaceutical Science, Jilin University, Changchun, P.R. China
- * E-mail:
| |
Collapse
|
15
|
Dosedělová H, Dumková J, Lesot H, Glocová K, Kunová M, Tucker AS, Veselá I, Krejčí P, Tichý F, Hampl A, Buchtová M. Fate of the molar dental lamina in the monophyodont mouse. PLoS One 2015; 10:e0127543. [PMID: 26010446 PMCID: PMC4444311 DOI: 10.1371/journal.pone.0127543] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 04/16/2015] [Indexed: 11/19/2022] Open
Abstract
The successional dental lamina (SDL) plays an essential role in the development of replacement teeth in diphyodont and polyphyodont animals. A morphologically similar structure, the rudimental successional dental lamina (RSDL), has been described in monophyodont (only one tooth generation) lizards on the lingual side of the developing functional tooth. This rudimentary lamina regresses, which has been proposed to play a role in preventing the formation of future generations of teeth. A similar rudimentary lingual structure has been reported associated with the first molar in the monophyodont mouse, and we show that this structure is common to all murine molars. Intriguingly, a lingual lamina is also observed on the non-replacing molars of other diphyodont mammals (pig and hedgehog), initially appearing very similar to the successional dental lamina on the replacing teeth. We have analyzed the morphological as well as ultrastructural changes that occur during the development and loss of this molar lamina in the mouse, from its initiation at late embryonic stages to its disappearance at postnatal stages. We show that loss appears to be driven by a reduction in cell proliferation, down-regulation of the progenitor marker Sox2, with only a small number of cells undergoing programmed cell death. The lingual lamina was associated with the dental stalk, a short epithelial connection between the tooth germ and the oral epithelium. The dental stalk remained in contact with the oral epithelium throughout tooth development up to eruption when connective tissue and numerous capillaries progressively invaded the dental stalk. The buccal side of the dental stalk underwent keratinisation and became part of the gingival epithelium, while most of the lingual cells underwent programmed cell death and the tissue directly above the erupting tooth was shed into the oral cavity.
Collapse
Affiliation(s)
- Hana Dosedělová
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
- Institute of Animal Physiology and Genetics, v.v.i., Academy of Sciences of the Czech Republic, Brno, Czech Republic
| | - Jana Dumková
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Hervé Lesot
- INSERM UMR1109, Team "Osteoarticular and Dental Regenerative NanoMedicine", Université de Strasbourg, Strasbourg, France
- Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
| | - Kristýna Glocová
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Michaela Kunová
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Abigail S. Tucker
- Department of Craniofacial Development and Stem Cell Biology, King´s College London, London, United Kingdom
- Department of Orthodontics, King´s College London Dental Institute, London, United Kingdom
| | - Iva Veselá
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
- Institute of Animal Physiology and Genetics, v.v.i., Academy of Sciences of the Czech Republic, Brno, Czech Republic
| | - Pavel Krejčí
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - František Tichý
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Aleš Hampl
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Marcela Buchtová
- Department of Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
- Institute of Animal Physiology and Genetics, v.v.i., Academy of Sciences of the Czech Republic, Brno, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
- * E-mail:
| |
Collapse
|
16
|
Śmieszek A, Czyrek A, Basinska K, Trynda J, Skaradzińska A, Siudzińska A, Marędziak M, Marycz K. Effect of Metformin on Viability, Morphology, and Ultrastructure of Mouse Bone Marrow-Derived Multipotent Mesenchymal Stromal Cells and Balb/3T3 Embryonic Fibroblast Cell Line. Biomed Res Int 2015; 2015:769402. [PMID: 26064951 DOI: 10.1155/2015/769402] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/27/2015] [Accepted: 04/15/2015] [Indexed: 12/27/2022]
Abstract
Metformin, a popular drug used to treat diabetes, has recently gained attention as a potentially useful therapeutic agent for treating cancer. In our research metformin was added to in vitro cultures of bone marrow-derived multipotent mesenchymal stromal cells (BMSCs) and Balb/3T3 fibroblast at concentration of 1 mM, 5 mM, and 10 mM. Obtained results indicated that metformin negatively affected proliferation activity of investigated cells. The drug triggered the formation of autophagosomes and apoptotic bodies in all tested cultures. Additionally, we focused on determination of expression of genes involved in insulin-like growth factor 2 (IGF2) signaling pathway. The most striking finding was that the mRNA level of IGF2 was constant in both BMSCs and Balb/3T3. Further, the analysis of IGF2 concentration in cell supernatants showed that it decreased in BMSC cultures after 5 and 10 mM metformin treatments. In case of Balb/3T3 the concentration of IGF2 in culture supernatants decreased after 1 and 5 mM and increased after 10 mM of metformin. Our results suggest that metformin influences the cytophysiology of somatic cells in a dose- and time-dependent manner causing inhibition of proliferation and abnormalities of their morphology and ultrastructure.
Collapse
|
17
|
Yong KW, Pingguan-Murphy B, Xu F, Abas WA, Choi JR, Omar SZ, Azmi MA, Chua KH, Wan Safwani WK. Phenotypic and functional characterization of long-term cryopreserved human adipose-derived stem cells. Sci Rep 2015; 5:9596. [PMID: 25872464 DOI: 10.1038/srep09596] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 03/04/2015] [Indexed: 12/17/2022] Open
Abstract
Cryopreservation represents an effective technique to maintain the functional properties of human adipose-derived stem cells (ASCs) and allows pooling of cells via long-term storage for clinical applications, e.g., cell-based therapies. It is crucial to reduce freezing injury during the cryopreservation process by loading the ASCs with the optimum concentration of suitable cryoprotective agents (CPAs). In this study, human ASCs were preserved for 3 months in different combinations of CPAs, including 1) 0.25 M trehalose; 2) 5% dimethylsulfoxide (DMSO); 3) 10% DMSO; 4) 5% DMSO + 20% fetal bovine serum (FBS); 5) 10% DMSO + 20% FBS; 6) 10% DMSO + 90% FBS. Interestingly, even with a reduction of DMSO to 5% and without FBS, cryopreserved ASCs maintained high cell viability comparable with standard cryomedium (10% DMSO + 90% FBS), with normal cell phenotype and proliferation rate. Cryopreserved ASCs also maintained their differentiation capability (e.g., to adipocytes, osteocytes and chondrocytes) and showed an enhanced expression level of stemness markers (e.g., NANOG, OCT-4, SOX-2 and REX-1). Our findings suggest that 5% DMSO without FBS may be an ideal CPA for an efficient long-term cryopreservation of human ASCs. These results aid in establishing standardized xeno-free long-term cryopreservation of human ASCs for clinical applications.
Collapse
|
18
|
Sato K, Itoh T, Kato T, Kitamura Y, Kaul SC, Wadhwa R, Sato F, Ohneda O. Serum-free isolation and culture system to enhance the proliferation and bone regeneration of adipose tissue-derived mesenchymal stem cells. In Vitro Cell Dev Biol Anim 2015; 51:515-29. [DOI: 10.1007/s11626-014-9860-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 12/14/2014] [Indexed: 12/23/2022]
|
19
|
Kim SJ, Koo OJ, Park HJ, Moon JH, da Torre BR, Javaregowda PK, Kang JT, Park SJ, Saadeldin IM, Choi JY, Lee BC, Jang G. Oct4 overexpression facilitates proliferation of porcine fibroblasts and development of cloned embryos. ZYGOTE 2015; 23:704-11. [PMID: 25181424 DOI: 10.1017/S0967199414000355] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Octamer-binding transcription factor 4 (Oct4) is a critical molecule for the self-renewal and pluripotency of embryonic stem cells. Recent reports have shown that Oct4 also controls cell-cycle progression and enhances the proliferation of various types of cells. As the high proliferation of donor fibroblasts is critical to the production of transgenic pigs, using the somatic cell nuclear transfer technique, we analysed the effect of Oct4 overexpression on the proliferation of porcine fibroblasts and embryos. Porcine endogenous Oct4 cDNA was cloned, sequenced and inserted into an expression vector. The vector was transfected into porcine fibroblasts, and a stable Oct4-overexpressed cell line was established by antibiotic selection. Oct4 expression was validated by the immunostaining of Oct4. Cell morphology was changed to sharp, and both proliferation and migration abilities were enhanced in Oct4-overexpressed cells. Real-time RT-PCR results showed that p16, Bcl2 and Myc were upregulated in Oct4-overexpressed cells. Somatic cell nuclear transfer was performed using Oct4-overexpressed cells, and the development of Oct4 embryos was compared with that of wild-type cloned embryos. The cleavage and blastocyst formation rates were improved in the Oct4 embryos. Interestingly, blastocyst formation of the Oct4 embryos was observed as early as day 5 in culture, while blastocysts were observed from day 6 in wild-type cloned embryos. In conclusion, the overexpression of Oct4 enhanced the proliferation of both porcine fibroblasts and embryos.
Collapse
|