1
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Li P, Ma X, Huang D, Gu X. Exploring the roles of non-coding RNAs in liver regeneration. Noncoding RNA Res 2024; 9:945-953. [PMID: 38680418 PMCID: PMC11046251 DOI: 10.1016/j.ncrna.2024.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/26/2024] [Accepted: 04/16/2024] [Indexed: 05/01/2024] Open
Abstract
Liver regeneration (LR) is a complex process encompassing three distinct phases: priming, proliferation phase and restoration, all influenced by various regulatory factors. After liver damage or partial resection, the liver tissue demonstrates remarkable restorative capacity, driven by cellular proliferation and repair mechanisms. The essential roles of non-coding RNAs (ncRNAs), predominantly microRNAs (miRNAs), long non-coding RNAs (lncRNAs) and circular RNA (circRNA), in regulating LR have been vastly studied. Additionally, the impact of ncRNAs on LR and their abnormal expression profiles during this process have been extensively documented. Mechanistic investigations have revealed that ncRNAs interact with genes involved in proliferation to regulate hepatocyte proliferation, apoptosis and differentiation, along with liver progenitor cell proliferation and migration. Given the significant role of ncRNAs in LR, an in-depth exploration of their involvement in the liver's self-repair capacity can reveal promising therapeutic strategies for LR and liver-related diseases. Moreover, understanding the unique regenerative potential of the adult liver and the mechanisms and regulatory factors of ncRNAs in LR are crucial for improving current treatment strategies and exploring new therapeutic approaches for various liver-related diseases. This review provides a brief overview of the LR process and the ncRNA expression profiles during this process. Furthermore, we also elaborate on the specific molecular mechanisms through which multiple key ncRNAs regulate the LR process. Finally, based on the expression characteristics of ncRNAs and their interactions with proliferation-associated genes, we explore their potential clinical application, such as developing predictive indicators reflecting liver regenerative activity and manipulating LR processes for therapeutic purposes.
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Affiliation(s)
- Penghui Li
- Department of Oncology, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471000, Henan, China
| | - Xiao Ma
- Zhejiang University School of Medicine, Hangzhou, 310000, Zhejiang, China
| | - Di Huang
- Department of Child Health Care, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Xinyu Gu
- Department of Oncology, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471000, Henan, China
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2
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Wang Y, Piao C, Liu T, Lu X, Ma Y, Zhang J, Ma H, Wang H. Exosomes Derived from Adipose Mesenchymal Stem Cells Promote Regeneration of Injured Liver in Minipigs. Int J Mol Sci 2024; 25:6604. [PMID: 38928308 PMCID: PMC11203699 DOI: 10.3390/ijms25126604] [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: 04/28/2024] [Revised: 06/04/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Hepatic ischemia/reperfusion injury (IRI) is an important factor affecting liver regeneration and functional recovery postoperatively. Many studies have suggested that mesenchymal stem cells (MSCs) contribute to hepatic tissue repair and functional recovery through paracrine mechanisms mediated by exosomes. Minipigs exhibit much more similar characteristics of the liver to those of humans than rodents. This study aimed to explore whether exosomes from adipose-derived MSCs (ADSCs-exo) could actively promote liver regeneration after hepatectomy combined with HIRI in minipigs and the role they play in the cell proliferation process. This study also compared the effects and differences in the role of ADSCs and ADSCs-exo in the inflammatory response and liver regeneration. The results showed that ADSCs-exo suppressed histopathological changes and reduced inflammatory infiltration in the liver; significantly decreased levels of ALT, TBIL, HA, and the pro-inflammatory cytokines TNF-α, IL-6, and CRP; increased levels of the anti-inflammatory cytokine IL-10 and the pro-regeneration factors Ki67, PCNA, CyclinD1, HGF, STAT3, VEGF, ANG1, ANG2; and decreased levels of the anti-regeneration factors SOCS3 and TGF-β. These indicators above showed similar changes with the ADSCs intervention group. Indicating that ADSCs-exo can exert the same role as ADSCs in regulating inflammatory responses and promoting liver regeneration. Our findings provide experimental evidence for the possibility that ADSCs-exo could be considered a safe and effective cell-free therapy to promote regeneration of injured livers.
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Affiliation(s)
| | | | | | | | | | | | | | - Hongbin Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.W.); (C.P.); (T.L.); (X.L.); (Y.M.); (J.Z.); (H.M.)
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3
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Mitaka T, Ichinohe N, Tanimizu N. "Small Hepatocytes" in the Liver. Cells 2023; 12:2718. [PMID: 38067145 PMCID: PMC10705974 DOI: 10.3390/cells12232718] [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: 09/16/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
Mature hepatocytes (MHs) in an adult rodent liver are categorized into the following three subpopulations based on their proliferative capability: type I cells (MH-I), which are committed progenitor cells that possess a high growth capability and basal hepatocytic functions; type II cells (MH-II), which possess a limited proliferative capability; and type III cells (MH-III), which lose the ability to divide (replicative senescence) and reach the final differentiated state. These subpopulations may explain the liver's development and growth after birth. Generally, small-sized hepatocytes emerge in mammal livers. The cells are characterized by being morphologically identical to hepatocytes except for their size, which is substantially smaller than that of ordinary MHs. We initially discovered small hepatocytes (SHs) in the primary culture of rat hepatocytes. We believe that SHs are derived from MH-I and play a role as hepatocytic progenitors to supply MHs. The population of MH-I (SHs) is distributed in the whole lobules, a part of which possesses a self-renewal capability, and decreases with age. Conversely, injured livers of experimental models and clinical cases showed the emergence of SHs. Studies demonstrate the involvement of SHs in liver regeneration. SHs that appeared in the injured livers are not a pure population but a mixture of two distinct origins, MH-derived and hepatic-stem-cell-derived cells. The predominant cell-derived SHs depend on the proliferative capability of the remaining MHs after the injury. This review will focus on the SHs that appeared in the liver and discuss the significance of SHs in liver regeneration.
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Affiliation(s)
- Toshihiro Mitaka
- Department of Tissue Development and Regeneration, Institute of Regenerative Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (N.I.); (N.T.)
| | - Norihisa Ichinohe
- Department of Tissue Development and Regeneration, Institute of Regenerative Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (N.I.); (N.T.)
| | - Naoki Tanimizu
- Department of Tissue Development and Regeneration, Institute of Regenerative Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (N.I.); (N.T.)
- Division of Regenerative Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
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4
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De Stefano N, Calleri A, Faini AC, Navarro-Tableros V, Martini S, Deaglio S, Patrono D, Romagnoli R. Extracellular Vesicles in Liver Transplantation: Current Evidence and Future Challenges. Int J Mol Sci 2023; 24:13547. [PMID: 37686354 PMCID: PMC10488298 DOI: 10.3390/ijms241713547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 08/24/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
Extracellular vesicles (EVs) are emerging as a promising field of research in liver disease. EVs are small, membrane-bound vesicles that contain various bioactive molecules, such as proteins, lipids, and nucleic acids and are involved in intercellular communication. They have been implicated in numerous physiological and pathological processes, including immune modulation and tissue repair, which make their use appealing in liver transplantation (LT). This review summarizes the current state of knowledge regarding the role of EVs in LT, including their potential use as biomarkers and therapeutic agents and their role in graft rejection. By providing a comprehensive insight into this emerging topic, this research lays the groundwork for the potential application of EVs in LT.
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Affiliation(s)
- Nicola De Stefano
- General Surgery 2U-Liver Transplant Unit, Department of Surgical Sciences, Azienda Ospedaliero Universitaria Città Della Salute e Della Scienza Di Torino, University of Turin, Corso Bramante 88-90, 10126 Turin, Italy; (N.D.S.); (R.R.)
| | - Alberto Calleri
- Gastrohepatology Unit, Azienda Ospedaliero Universitaria Città Della Salute e Della Scienza Di Torino, University of Turin, 10126 Turin, Italy; (A.C.); (S.M.)
| | - Angelo Corso Faini
- Immunogenetics and Transplant Biology Unit, Azienda Ospedaliero Universitaria Città Della Salute e Della Scienza Di Torino, University of Turin, 10126 Turin, Italy; (A.C.F.); (S.D.)
| | - Victor Navarro-Tableros
- 2i3T, Società Per La Gestione Dell’incubatore Di Imprese e Per Il Trasferimento Tecnologico, University of Turin, 10126 Turin, Italy;
| | - Silvia Martini
- Gastrohepatology Unit, Azienda Ospedaliero Universitaria Città Della Salute e Della Scienza Di Torino, University of Turin, 10126 Turin, Italy; (A.C.); (S.M.)
| | - Silvia Deaglio
- Immunogenetics and Transplant Biology Unit, Azienda Ospedaliero Universitaria Città Della Salute e Della Scienza Di Torino, University of Turin, 10126 Turin, Italy; (A.C.F.); (S.D.)
| | - Damiano Patrono
- General Surgery 2U-Liver Transplant Unit, Department of Surgical Sciences, Azienda Ospedaliero Universitaria Città Della Salute e Della Scienza Di Torino, University of Turin, Corso Bramante 88-90, 10126 Turin, Italy; (N.D.S.); (R.R.)
| | - Renato Romagnoli
- General Surgery 2U-Liver Transplant Unit, Department of Surgical Sciences, Azienda Ospedaliero Universitaria Città Della Salute e Della Scienza Di Torino, University of Turin, Corso Bramante 88-90, 10126 Turin, Italy; (N.D.S.); (R.R.)
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Ichinohe N, Tanimizu N, Ishigami K, Yoshioka Y, Fujitani N, Ochiya T, Takahashi M, Mitaka T. CINC-2 and miR-199a-5p in EVs secreted by transplanted Thy1 + cells activate hepatocytic progenitor cell growth in rat liver regeneration. Stem Cell Res Ther 2023; 14:134. [PMID: 37194082 DOI: 10.1186/s13287-023-03346-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 04/12/2023] [Indexed: 05/18/2023] Open
Abstract
BACKGROUND Small hepatocyte-like progenitor cells (SHPCs) are hepatocytic progenitor cells that transiently form clusters in rat livers treated with retrorsine (Ret) that underwent 70% partial hepatectomy (PH). We previously reported that transplantation of Thy1+ cells obtained from D-galactosamine-treated livers promotes SHPC expansion, thereby accelerating liver regeneration. Extracellular vesicles (EVs) secreted by Thy1+ cells induce sinusoidal endothelial cells (SECs) and Kupffer cells (KCs) to secrete IL17B and IL25, respectively, thereby activating SHPCs through IL17 receptor B (RB) signaling. This study aimed to identify the inducers of IL17RB signaling and growth factors for SHPC proliferation in EVs secreted by Thy1+ cells (Thy1-EVs). METHODS Thy1+ cells isolated from the livers of rats treated with D-galactosamine were cultured. Although some liver stem/progenitor cells (LSPCs) proliferated to form colonies, others remained as mesenchymal cells (MCs). Thy1-MCs or Thy1-LSPCs were transplanted into Ret/PH-treated livers to examine their effects on SHPCs. EVs were isolated from the conditioned medium (CM) of Thy1-MCs and Thy1-LSPCs. Small hepatocytes (SHs) isolated from adult rat livers were used to identify factors regulating cell growth in Thy1-EVs. RESULTS The size of SHPC clusters transplanted with Thy1-MCs was significantly larger than that of SHPC clusters transplanted with Thy1-LSPCs (p = 0.02). A comprehensive analysis of Thy1-MC-EVs revealed that miR-199a-5p, cytokine-induced neutrophil chemoattractant-2 (CINC-2), and monocyte chemotactic protein 1 (MCP-1) were candidates for promoting SHPC growth. Additionally, miR-199a-5p mimics promoted the growth of SHs (p = 0.02), whereas CINC-2 and MCP-1 did not. SECs treated with CINC-2 induced Il17b expression. KCs treated with Thy1-EVs induced the expression of CINC-2, Il25, and miR-199a-5p. CM derived from SECs treated with CINC-2 accelerated the growth of SHs (p = 0.03). Similarly, CM derived from KCs treated with Thy1-EVs and miR-199a-5p mimics accelerated the growth of SHs (p = 0.007). In addition, although miR-199a-overexpressing EVs could not enhance SHPC proliferation, transplantation of miR-199a-overexpressing Thy1-MCs could promote the expansion of SHPC clusters. CONCLUSION Thy1-MC transplantation may accelerate liver regeneration owing to SHPC expansion, which is induced by CINC-2/IL17RB signaling and miR-199a-5p via SEC and KC activation.
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Affiliation(s)
- Norihisa Ichinohe
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-Ku, Sapporo, 060-8556, Japan.
| | - Naoki Tanimizu
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-Ku, Sapporo, 060-8556, Japan
- Division of Regenerative Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Keisuke Ishigami
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-Ku, Sapporo, 060-8556, Japan
| | - Yusuke Yoshioka
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Tokyo, Japan
- Department of Molecular and Cellular Medicine, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Naoki Fujitani
- Department of Biochemistry, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takahiro Ochiya
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Tokyo, Japan
- Department of Molecular and Cellular Medicine, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Motoko Takahashi
- Department of Biochemistry, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Toshihiro Mitaka
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-Ku, Sapporo, 060-8556, Japan.
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6
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Li T, Fu Y, Guo Z, Zhu H, Liao H, Niu X, Zhou L, Fu S, Li Y, Li S, Wang L, Zheng Y, Feng L, Gao Y, He G. A new cell-free therapeutic strategy for liver regeneration: Human placental mesenchymal stem cell-derived extracellular vesicles. J Tissue Eng 2022; 13:20417314221132093. [PMID: 36313857 PMCID: PMC9597011 DOI: 10.1177/20417314221132093] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 09/26/2022] [Indexed: 11/06/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have potential role in organ regeneration therapy. Previous work indicating that MSCs confer protection against liver disease. Here, we aimed to determine the potential application in liver regeneration of human placenta-derived MSCs extracellular vesicles (hPMSCs-EVs) via experimental hepatectomy. hPMSCs-EVs were administered intravenously 24 h before 70% partial hepatectomy, the specific composition of hPMSCs-EVs was identified by sequencing and validated by the quantitative polymerase chain reaction, including circ-RBM23. The role of circ-RBM23 in L02 cell was evaluated and it was found that circ-RBM23 knockdown inhibited L02 cell proliferation both in vitro and in vivo. The competing endogenous RNA function of circ-RBM23 was evaluated by the RNA immunoprecipitation assay and found that circ-RBM23 shares miRNA response elements with RRM2. Overexpressed circ-RBM23 bound competitively to miR-139-5p, preventing the miRNA-mediated degradation of RRM2, activating the expression of eIF4G and AKT/mTOR, and facilitating liver regeneration. These results indicate that hPMSCs-EVs prevent hepatic dysfunction and improve liver regeneration in vivo and hepatocytes proliferation in vitro, potentially via circ-RBM23 delivery.
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Affiliation(s)
- Ting Li
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China,Ting Li, Department of Hepatobiliary
Surgery II, Zhujiang Hospital, Southern Medical University, 253 Gongye Street,
Guangzhou, Guangdong 510282, China.
| | - Yu Fu
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Zeyi Guo
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Honglei Zhu
- Department of Gynaecology and
Obstetrics, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Hangyu Liao
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaoge Niu
- Department of Special Medical Service
Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Lin Zhou
- State Key Laboratory of Transducer
Technology, Shanghai Institute of Microsystem and Information Technology, Chinese
Academy of Sciences, Shanghai, China
| | - Shunjun Fu
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yang Li
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Shao Li
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Lujia Wang
- The Second School of Clinical Medicine,
Southern Medical University, Guangzhou, China
| | - Yizhou Zheng
- School of Public Health, China Medical
University, Shenyang, China
| | - Lei Feng
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yi Gao
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Guolin He
- Department of Hepatobiliary Surgery,
Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Ichinohe N, Tanimizu N, Mitaka T. Isolation of Small Hepatocyte-Like Progenitor Cells from Retrorsine/Partial Hepatectomy Rat Livers by Laser Microdissection. Methods Mol Biol 2022; 2544:183-193. [PMID: 36125719 DOI: 10.1007/978-1-0716-2557-6_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Small hepatocyte-like progenitor cells (SHPCs) are known as liver stem/progenitor cells (LSPCs). SHPCs transiently appear and form clusters in rat livers treated with retrorsine (Ret) and a 70% partial hepatectomy (PH). The Ret/PH model has been used widely to analyze the effectiveness of cell transplantation and the mechanisms of LSPC proliferation. Laser microdissection (LMD) is a powerful tool that can excise and collect specific areas of cells from a tissue slice with a laser under a microscope. These cells exhibiting morphological alterations different from the surrounding cells may be analyzed by gene expression profiling. Specific markers of SHPCs have not yet been identified, in part, because it is difficult to isolate SHPCs from the liver using fluorescence or magnetic-activated cell sorting. To examine the underlying mechanism for SHPC growth, we established comprehensive gene expression profiles for SHPCs captured from liver sections using LMD. In this chapter, we introduce a method to isolate SHPCs from liver tissue sections using LMD for gene expression analysis.
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Affiliation(s)
- Norihisa Ichinohe
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan.
| | - Naoki Tanimizu
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
- Division of Regenerative Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Toshihiro Mitaka
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
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8
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Yuan R, Dai X, Li Y, Li C, Liu L. Exosomes from miR-29a-modified adipose-derived mesenchymal stem cells reduce excessive scar formation by inhibiting TGF-β2/Smad3 signaling. Mol Med Rep 2021; 24:758. [PMID: 34476508 PMCID: PMC8436211 DOI: 10.3892/mmr.2021.12398] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 06/02/2021] [Indexed: 12/31/2022] Open
Abstract
Pathological scars mainly refer to hypertrophic scars and keloids, and have a high incidence. Moreover, these scars seriously affect the patient's appearance and are associated with significant pain. The present study aimed to investigate the inhibitory effect of microRNA (miR)-29a from human adipose-derived mesenchymal stem cells (hADSCs) exosomes on scar formation. Firstly, the expression of miR-29a in thermal skin tissues of mice and human hypertrophic scar fibroblasts (HSFBs) was detected via reverse transcription-quantitative PCR. Exosomes derived from miR-29a-modified hADSCs were extracted and the influence of miR-29a-modified hADSCs-exo on the proliferation and function of HSFBs was determined. Lastly, the effect of miR-29a-modified hADSCs-exo on scar formation was determined using a thermal mouse model. The results demonstrated that miR-29a was downregulated in scar tissues after scalding and in HSFBs. After treating HSFBs with miR-29a-modified hADSC exosomes, miR-29a-overexpressing hADSC exosomes inhibited the proliferation and migration of HSFBs. Moreover, it was found that TGF-β2 was the target of miR-29a, and that hADSC exosome-derived miR-29a inhibited the fibrosis of HSFBs and scar hyperplasia after scalding in mice by targeting the TGF-β2/Smad3 signaling pathway. In summary, the current data indicated that miR-29a-modified hADSC exosome therapy can decrease scar formation by inhibiting the TGF-β2/Smad3 signaling pathway via its derived exogenous miR-29a, and this may be useful for the future treatment of pathological scars by providing a potential molecular basis.
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Affiliation(s)
- Ruihong Yuan
- Department of Plastic Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Xiaoming Dai
- Department of Plastic Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Yisong Li
- Department of Plastic Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Chunshan Li
- Department of Plastic Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
| | - Liu Liu
- Department of Plastic Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
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9
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Gala D, Mohak S, Fábián Z. Extracellular Vehicles of Oxygen-Depleted Mesenchymal Stromal Cells: Route to Off-Shelf Cellular Therapeutics? Cells 2021; 10:cells10092199. [PMID: 34571848 PMCID: PMC8465344 DOI: 10.3390/cells10092199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 11/16/2022] Open
Abstract
Cellular therapy is a promising tool of human medicine to successfully treat complex and challenging pathologies such as cardiovascular diseases or chronic inflammatory conditions. Bone marrow-derived mesenchymal stromal cells (BMSCs) are in the limelight of these efforts, initially, trying to exploit their natural properties by direct transplantation. Extensive research on the therapeutic use of BMSCs shed light on a number of key aspects of BMSC physiology including the importance of oxygen in the control of BMSC phenotype. These efforts also led to a growing number of evidence indicating that the beneficial therapeutic effects of BMSCs can be mediated by BMSC-secreted agents. Further investigations revealed that BMSC-excreted extracellular vesicles could mediate the potentially therapeutic effects of BMSCs. Here, we review our current understanding of the relationship between low oxygen conditions and the effects of BMSC-secreted extracellular vesicles focusing on the possible medical relevance of this interplay.
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