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Shao C, Yang X, Jing Y, Hou X, Huang Y, Zong C, Gao L, Liu W, Jiang J, Ye F, Shi J, Zhao Q, Li R, Zhang X, Wei L. The stemness of hepatocytes is maintained by high levels of lipopolysaccharide via YAP1 activation. Stem Cell Res Ther 2021; 12:342. [PMID: 34112239 PMCID: PMC8193885 DOI: 10.1186/s13287-021-02421-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 05/26/2021] [Indexed: 12/14/2022] Open
Abstract
Background The liver possesses a powerful regeneration ability, which is correlated with the stemness of hepatocytes in the portal vein (PV). However, the mechanism underlying the maintenance of hepatocyte stemness has not been elucidated. Here, we hypothesized that high levels of lipopolysaccharide from the portal vein might maintain the stemness of hepatocytes in the PV area. Methods First, we examined the location of hepatic stem cells and the concentration of lipopolysaccharide (LPS) in the portal vein and inferior vena cava. Then, we assessed the effect of LPS on stemness maintenance in mice by using antibiotics to eliminate LPS and knocking out the LPS receptor, TLR4. In vitro, the effect of LPS on the stemness of hepatocytes was investigated by colony and sphere formation assays and assessment of pluripotent and stem cell marker expression. Furthermore, we studied the mechanism by which LPS regulates the stemness of hepatocytes. Finally, we ligated the portal vein branch to further verify the effect of LPS. Results We found that a high level of LPS from the portal vein was correlated with the location of hepatic stem cells in the PV area, and elimination of LPS by antibiotics inhibited the expression of the stemness marker. LPS promoted colony and sphere formation and induced the upregulation of pluripotent and stem cell markers in AML12 cells. Furthermore, in the reprogramming medium, LPS facilitated the dedifferentiation of mature hepatocytes into hepatic progenitor-like cells, which exhibited a bipotent differentiation capacity in vivo and in vitro. Mechanistically, LPS bound TLR4 to regulate stemness of hepatocytes via the activation of YAP1 signaling, and blockade of YAP1 abolished the LPS-induced cell stemness and upregulation of pluripotent markers. Conclusions Our study implies a correlation between LPS/TLR4/YAP1 signaling and cell stemness, and LPS was shown to be involved in stemness maintenance of hepatocytes in the PV area. LPS might be used to induce the dedifferentiation of mature hepatocytes into progenitor-like cells for repair of liver injury. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02421-7.
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Affiliation(s)
- Changchun Shao
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Xue Yang
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Yingying Jing
- Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China
| | - Xiaojuan Hou
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Yihua Huang
- Department of Pathology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, 350108, China
| | - Chen Zong
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Lu Gao
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Wenting Liu
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Jinghua Jiang
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Fei Ye
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Junxia Shi
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Qiudong Zhao
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Rong Li
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Xiaoren Zhang
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Disease, Guangzhou, 510000, China.
| | - Lixin Wei
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China.
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Rosaian AS, Rao GN, Mohan SP, Vijayarajan M, Prabhakaran RC, Sherwood A. Regenerative Capacity of Dental Pulp Stem Cells: A Systematic Review. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2020; 12:S27-S36. [PMID: 33149427 PMCID: PMC7595477 DOI: 10.4103/jpbs.jpbs_121_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/06/2020] [Accepted: 03/13/2020] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES The dental pulp contains undifferentiated mesenchymal cells, blood vessels and so on, which are responsible for routine functions of a tooth. The determination of stemness and regenerative properties using biomarkers and further application in routine practice may unravel its potential. MATERIALS AND METHODS Inclusion criteria-original research articles published in English, from 2000 to 2019, were collected both manually and by electronic search from databases of Cochrane, Medline, Embase, and PubMed. Exclusion criteria-articles other than English and review manuscripts were omitted. The shortlisted articles were reviewed for specific biomarkers, to assess the regenerative potential, stemness, and lineage of dental pulp stem cells. RESULTS Of 512 articles, 64 were selected and reviewed to determine the mesenchymal, neurogenic, vasculogenic, hematopoietic, and stem cell potential. On the basis of the search analysis, a panel of markers was proposed. CONCLUSION The application of proposed markers, on a pulpectomized tissue derived from human teeth, may be helpful to determine the regenerative potential and the usefulness in regenerative medicine and tissue engineering.
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Affiliation(s)
- Adlin S Rosaian
- Department of Oral and Maxillofacial Pathology and Oral Microbiology, CSI College of Dental Sciences and Research, Madurai, Tamil Nadu, India
| | - Gururaj Narayana Rao
- Department of Oral and Maxillofacial Pathology and Oral Microbiology, CSI College of Dental Sciences and Research, Madurai, Tamil Nadu, India
| | - Sunil P Mohan
- Department of Oral Pathology, Sree Anjaneya Institute of Dental Sciences, Kozhikode, Kerala, India
- Department of Stem Cells and Regenerative Medicine, Sree Anjaneya Institute of Dental Sciences, Kozhikode, Kerala, India
| | - Mahalakshmi Vijayarajan
- Department of Oral and Maxillofacial Pathology and Oral Microbiology, CSI College of Dental Sciences and Research, Madurai, Tamil Nadu, India
| | - Rebekkah C Prabhakaran
- Department of Oral and Maxillofacial Pathology and Oral Microbiology, CSI College of Dental Sciences and Research, Madurai, Tamil Nadu, India
| | - Anand Sherwood
- Department of Operative Dentistry and Endodontics, CSI College of Dental Sciences and Research, Madurai, Tamil Nadu, India
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Heidarzadeh M, Roodbari F, Hassanpour M, Ahmadi M, Saberianpour S, Rahbarghazi R. Toll-like receptor bioactivity in endothelial progenitor cells. Cell Tissue Res 2019; 379:223-230. [PMID: 31754781 DOI: 10.1007/s00441-019-03119-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 10/06/2019] [Indexed: 12/12/2022]
Abstract
Cardiovascular disease is the main cause of death globally that can be mitigated by the modulation of angiogenesis. To achieve this goal, the application of endothelial progenitor cells and other stem cell types is useful. Following the onset of cardiovascular disease and pro-inflammatory conditions as seen during bacterial sepsis, endothelial progenitor cells enter systemic circulation in response to multiple cytokines and activation of various intracellular mechanisms. The critical role of Toll-like receptors has been previously identified in the dynamics of various cell types, in particular, immune cells. To our knowledge, there are a few experiments related to the role of Toll-like receptors in endothelial progenitor cell activity. Emerging data point of endothelial progenitor cells and other stem cells having the potential to express Toll-like receptors to control different activities such as multipotentiality and dynamics of growth. In this review article, we aim to collect data related to the role of Toll-like receptors in endothelial progenitor cells bioactivity and angiogenic potential.
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Affiliation(s)
- Morteza Heidarzadeh
- Department of Microbiology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran.,Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Roodbari
- Department of Microbiology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran.
| | - Mehdi Hassanpour
- Department of Clinical Biochemistry and Laboratory Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdi Ahmadi
- Tuberculosis and Lung Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shirin Saberianpour
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Department of Applied Cell Sciences, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
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Kaneko T, Gu B, Sone PP, Zaw SYM, Murano H, Zaw ZCT, Okiji T. Dental Pulp Tissue Engineering Using Mesenchymal Stem Cells: a Review with a Protocol. Stem Cell Rev Rep 2018; 14:668-676. [PMID: 29804171 DOI: 10.1007/s12015-018-9826-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Mesenchymal stem cells (MSCs) are adult stem cells that can be isolated from human and animal sources such as rats. Recently, an in vivo protocol for pulp tissue engineering using implantation of bone marrow MSCs into rat pulpotomized molars was established by our research group. This coronal pulp regeneration model showed almost complete regeneration/healing with dentin bridge formation when the cavity was sealed with mineral trioxide aggregate (MTA) to create a biocompatible seal of the pulp. This method is a powerful tool for elucidating the processes of dental pulp tissue regeneration following implantation of MSCs. In the present review, we discuss the literature in the field of dental pulp tissue engineering using MSCs including dental pulp stem cells and stem cells from exfoliated deciduous teeth. In addition, we present a brief step-by-step protocol of the coronal pulp regeneration model focusing on the implantation of rat bone marrow MSCs, biodegradable scaffolds, and hydrogels in pulpotomized rat molars. The protocol may lay the foundation for studies aiming at defining further histological and molecular mechanism of the rat pulp tissue engineering.
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Affiliation(s)
- Tomoatsu Kaneko
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Yushima 1-5-45, Bunkyo-Ku, Tokyo, 113-8549, Japan.
| | - Bin Gu
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Yushima 1-5-45, Bunkyo-Ku, Tokyo, 113-8549, Japan
| | - Phyo Pyai Sone
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Yushima 1-5-45, Bunkyo-Ku, Tokyo, 113-8549, Japan
| | - Su Yee Myo Zaw
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Yushima 1-5-45, Bunkyo-Ku, Tokyo, 113-8549, Japan
| | - Hiroki Murano
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Yushima 1-5-45, Bunkyo-Ku, Tokyo, 113-8549, Japan
| | - Zar Chi Thein Zaw
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Yushima 1-5-45, Bunkyo-Ku, Tokyo, 113-8549, Japan
| | - Takashi Okiji
- Department of Pulp Biology and Endodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Yushima 1-5-45, Bunkyo-Ku, Tokyo, 113-8549, Japan
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