scholarly journals 243. MESENCHYMAL STEM CELLS AND MESENCHYMAL STEM CELL CONDITIONED MEDIUM INDUCE REGULATORY T CELLS AND PROMOTE T HELPER 2 (TH2) DIFFERENTIATION IN MURINE ANTIGEN-INDUCED ARTHRITIS

Rheumatology ◽  
2017 ◽  
Vol 56 (suppl_2) ◽  
Author(s):  
Alasdair G. Kay ◽  
Grace Long ◽  
Bhagat Manku ◽  
Stephen Broadfoot ◽  
Jim Middleton ◽  
...  
Keyword(s):  
Stem Cells ◽  
T Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Mesenchymal Stem Cell ◽  
Regulatory T Cells ◽  
T Helper ◽  
T Helper 2 ◽  
Th2 Differentiation ◽  
Cell Conditioned Medium

scholarly journals Mesenchymal Stem Cells Protect Breast Cancer Cells through Regulatory T Cells: Role of Mesenchymal Stem Cell-Derived TGF-β

2010 ◽  
Vol 184 (10) ◽  
pp. 5885-5894 ◽  
Author(s):  
Shyam A. Patel ◽  
Justin R. Meyer ◽  
Steven J. Greco ◽  
Kelly E. Corcoran ◽  
Margarette Bryan ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cells ◽  
T Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Mesenchymal Stem Cell ◽  
Regulatory T Cells ◽  
Cancer Cells ◽  
Breast Cancer Cells

scholarly journals Immunomodulatory Potential of Human Mesenchymal Stem Cells and their Exosomes on Multiple Sclerosis

2021 ◽  
Author(s):  
Hussein Baharlooi ◽  
Zahra Salehi ◽  
Moein Minbashi Moeini ◽  
Nima Rezaei ◽  
Maryam Azimi
Keyword(s):  
Multiple Sclerosis ◽  
Stem Cells ◽  
T Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Mesenchymal Stem Cell ◽  
Interleukin 17 ◽  
Healthy Individuals ◽  
Healthy Control ◽  
Multiple Sclerosis Patients

Purpose: Promising advances have been made in mesenchymal stem cell transplantation to re-induce the immune tolerance in neuroinflammatory animal models and Multiple Sclerosis patients. The available evidence demonstrated that immunomodulatory effects of mesenchymal stem cell are particularly exerted through releasing exosomes to their environment. We therefore, aimed to comparatively assess the potential effect of mesenchymal stem cells and mesenchymal stem cells-derived exosomes on proliferation and function of the CD4+CD25− conventional T cells, isolated from relapsing-remitting Multiple Sclerosis patients. Methods: Mesenchymal stem cells were isolated from human umbilical cord tissues and used for exosome isolation via ultracentrifugation. Both mesenchymal stem cells and mesenchymal stem cells-derived exosomes were evaluated for their anti-inflammatory effects against the proliferation of T cells isolated from two groups of individuals in vitro, MS patients and healthy subjects. Cytokine production of conventional T cells (interferon-γ, interleukin-10, and interleukin-17) was also assessed, using flow cytometry for the patients and healthy individuals. Results: Here, evidence shows that MSCs and MSC-derived exosomes dampen proliferation and percentage of conventional T cells that produce IFN-γ (healthy control: p<0.001) and interleukin-17 (healthy control: p<0.001, MS patients: p<0.001), with a significant increase of IL-10 producing cells in the patients and healthy individuals. Surprisingly, MSC-derived exosomes demonstrated higher immune-modulating properties on conventional T cells responses, compared to MSCs. Conclusion: The current study, provides a novel approach of exocytosis on autoimmune therapy. In particular, Mesenchymal stem cell -derived exosomes, which are cell-derived biologics, could be considered as an alternative for Mesenchymal stem cells in treating multiple sclerosis.

scholarly journals Hydrogen Sulfide Regulates Homeostasis of Mesenchymal Stem Cells and Regulatory T Cells

2016 ◽  
Vol 95 (13) ◽  
pp. 1445-1451 ◽  
Author(s):  
R. Yang ◽  
Y. Liu ◽  
S. Shi
Keyword(s):  
Stem Cells ◽  
T Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Hydrogen Sulfide ◽  
Mesenchymal Stem Cell ◽  
Tissue Homeostasis ◽  
Cell Functions ◽  
Multiple Signaling ◽  
Pathologic Processes

Hydrogen sulfide (H2S) has long been known as a toxic gas. However, recently accumulated evidence suggests that H2S contributes to a variety of physiologic and pathologic processes. Endogenous H2S production is regulated by multiple enzymes that are differentially expressed in the cardiovascular, neuronal, immune, renal, respiratory, gastrointestinal, reproductive, liver, and endocrine systems. Alteration of H2S metabolism may affect multiple signaling pathways and tissue homeostasis. The growing number of diverse targets for which H2S serves as a gasotransmitter has been extensively reviewed elsewhere. In this review, the authors discuss current emerging evidence that H2S regulates mesenchymal stem cell and T-cell functions.

Mesenchymal Stem Cell-Derived Exosome-Containing Linc00632 Regulates GATA Binding Protein-3 Expression in Allergic Rhinitis by Interacting with Enhancer of Zeste Homolog 2 to Inhibit T Helper Cell 2 Differentiation

2021 ◽  
pp. 1-11
Author(s):  
Wei Li ◽  
Cui-Yun Cai ◽  
Jun-Jie Zeng
Keyword(s):  
T Cells ◽  
Allergic Rhinitis ◽  
Stem Cell ◽  
Mesenchymal Stem Cell ◽  
Nasal Mucosa ◽  
Binding Protein ◽  
T Helper Cell ◽  
Helper Cell ◽  
T Helper ◽  
Th2 Differentiation

<b><i>Background:</i></b> Allergic rhinitis (AR) is regarded as one of the most common allergic disease of nasal mucosa affecting many people worldwide. Long noncoding RNAs are critical modulators affecting AR progression, whereas the pathogenesis of Linc00632 in the development of AR remains unclear. <b><i>Methods:</i></b> T helper cell 2 (Th2) differentiation of CD4<sup>+</sup> T cells was measured by flow cytometry. Real-time quantitative PCR assay and Western blot were applied to determine the levels of RNA and proteins, respectively. The interleukin (IL)-4 and IL-13 levels were quantitatively assessed through ELISA. Subcellular fractionation was conducted to detect the cellular localization of Linc00632. RNA immunoprecipitation experiment was employed to validate the interaction relationship between Linc00632 and enhancer of zeste homolog 2 (EZH2). Chromatin immunoprecipitation assay was used for determination of protein-DNA interactions. <b><i>Results:</i></b> The expression of Linc00632 was significantly decreased by 4 times in nasal mucosa of AR patients. Human umbilical cord mesenchymal stem cell-derived exosome dramatically inhibited Th2 differentiation, decreased GATA binding protein-3 (GATA-3) protein expressions and IL-4 levels by about 2 times in CD4<sup>+</sup> T cells. Knockdown Linc00632 partially reversed the effects of exosomes on Th2 differentiation, IL-4 and IL-13 levels, and GATA-3 expression. Linc00632 overexpression could suppress Th2 differentiation of CD4<sup>+</sup> T cells, reduced IL-4 and IL-13 levels, and GATA-3 expressions roughly 2 times. Linc00632 repressed the expression of GATA-3 by interacting with EZH2. GATA-3 overexpression partially reversed the effect of Linc00632 on Th2 differentiation of CD4<sup>+</sup> T cells. <b><i>Conclusion:</i></b> Linc00632 acted as a suppression factor in Th2 differentiation by inhibiting the expression of GATA-3 via interacting with EZH2, which might provide a new insight for understanding the action mechanism of Linc00632 in AR.

Mesenchymal Stem Cells in the Treatment of Cartilage Defects of the Knee: A Systematic Review of the Clinical Outcomes

2021 ◽  
pp. 036354652098681
Author(s):  
Monketh Jaibaji ◽  
Rawan Jaibaji ◽  
Andrea Volpin
Keyword(s):  
Systematic Review ◽  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Mesenchymal Stem Cell ◽  
Osteochondral Lesions ◽  
Common Source ◽  
Significant Heterogeneity ◽  
Osteochondral Defects

Background: Osteochondral lesions are a common clinical problem and their management has been historically challenging. Mesenchymal stem cells have the potential to differentiate into chondrocytes and thus restore hyaline cartilage to the defect, theoretically improving clincal outcomes in these patients. They can also be harvested with minimal donor site morbidity. Purpose: To assess the clinical and functional outcomes of mesenchymal stem cell implantation to treat isolated osteochondral defects of the knee. A secondary purpose is to assess the quality of the current available evidence as well as the radiological and histological outcomes. We also reviewed the cellular preparation and operative techniques for implantation. Study Design: Systematic review. Methods: A comprehensive literature search of 4 databases was carried out: CINAHL, Embase, MEDLINE, and PubMed. We searched for clinical studies reporting the outcomes on a minimum of 5 patients with at least 12 months of follow-up. Clinical, radiological, and histological outcomes were recorded. We also recorded demographics, stem cell source, culture technique, and operative technique. Methodological quality of each study was assessed using the modified Coleman methodology score, and risk of bias for the randomized controlled studies was assessed using the Cochrane Collaboration tool. Results: Seventeen studies were found, encompassing 367 patients. The mean patient age was 35.1 years. Bone marrow was the most common source of stem cells utilized. Mesenchymal stem cell therapy consistently demonstrated good short- to medium-term outcomes in the studies reviewed with no serious adverse events being recorded. There was significant heterogeneity in cell harvesting and preparation as well as in the reporting of outcomes. Conclusion: Mesenchymal stem cells demonstrated a clinically relevant improvement in outcomes in patients with osteochondral defects of the knee. More research is needed to establish an optimal treatment protocol, long-term outcomes, and superiority over other therapies. Registration: CRD42020179391 (PROSPERO).

scholarly journals Synergy of molecularly mobile polyrotaxane surfaces with endothelial cell co-culture for mesenchymal stem cell mineralization

RSC Advances ◽  
2021 ◽  
Vol 11 (30) ◽  
pp. 18685-18692
Author(s):  
Hiroki Masuda ◽  
Yoshinori Arisaka ◽  
Masahiro Hakariya ◽  
Takanori Iwata ◽  
Tetsuya Yoda ◽  
...  
Keyword(s):  
Stem Cells ◽  
Endothelial Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Endothelial Cell ◽  
Mesenchymal Stem Cell ◽  
Molecular Mobility ◽  
Culture System

Molecular mobility of polyrotaxane surfaces promoted mineralization in a co-culture system of mesenchymal stem cells and endothelial cells.

scholarly journals Mesenchymal Stem Cell-Derived Exosomes: Biological Function and Their Therapeutic Potential in Radiation Damage

Cells ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 42
Author(s):  
Xiaoyu Pu ◽  
Siyang Ma ◽  
Yan Gao ◽  
Tiankai Xu ◽  
Pengyu Chang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Mesenchymal Stem Cell ◽  
Radiation Damage ◽  
Therapeutic Potential ◽  
Damage Model ◽  
Bioactive Substances ◽  
Radiation Induced ◽  
Insight Into

Radiation-induced damage is a common occurrence in cancer patients who undergo radiotherapy. In this setting, radiation-induced damage can be refractory because the regeneration responses of injured tissues or organs are not well stimulated. Mesenchymal stem cells have become ideal candidates for managing radiation-induced damage. Moreover, accumulating evidence suggests that exosomes derived from mesenchymal stem cells have a similar effect on repairing tissue damage mainly because these exosomes carry various bioactive substances, such as miRNAs, proteins and lipids, which can affect immunomodulation, angiogenesis, and cell survival and proliferation. Although the mechanisms by which mesenchymal stem cell-derived exosomes repair radiation damage have not been fully elucidated, we intend to translate their biological features into a radiation damage model and aim to provide new insight into the management of radiation damage.

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