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https://www.readbyqxmd.com/read/29331104/inhibition-of-mircorna-34a-enhances-survival-of-human-bone-marrow-mesenchymal-stromal-stem-cells-under-oxidative-stress
#1
Yang Liu, Xiaohu Zhang, Jie Chen, Tingyu Li
BACKGROUND Mesenchymal stromal/stem cells (MSCs) are broadly used for many diseases, but the efficacy of MSC engraftment is very low due to low viability and high cell death rate under a stressful microenvironment. The present study aimed to investigate whether microRNA-34a (miR-34a), which is a downstream target of P53, is involved in H2O2-induced MSC cell death. MATERIAL AND METHODS Human bone marrow MSCs (hMSCs) were purchased from Lonza and were cultured as previously described. hMSCs were transfected with miR-34a inhibitor and exposed to H2O2...
January 13, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29322249/mir-375-inhibits-the-hepatocyte-growth-factor-elicited-migration-of-mesenchymal-stem-cells-by-downregulating-akt-signaling
#2
Lihong He, Xianyao Wang, Naixin Kang, Jianwei Xu, Nan Dai, Xiaojing Xu, Huanxiang Zhang
The migration of mesenchymal stem cells (MSCs) is critical for their use in cell-based therapies. Accumulating evidence suggests that microRNAs are important regulators of MSC migration. Here, we report that the expression of miR-375 was downregulated in MSCs treated with hepatocyte growth factor (HGF), which strongly stimulates the migration of these cells. Overexpression of miR-375 decreased the transfilter migration and the migration velocity of MSCs triggered by HGF. In our efforts to determine the mechanism by which miR-375 affects MSC migration, we found that miR-375 significantly inhibited the activation of Akt by downregulating its phosphorylation at T308 and S473, but had no effect on the activity of mitogen-activated protein kinases...
January 10, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29273797/thy-1-dependent-uptake-of-mesenchymal-stem-cell-derived-extracellular-vesicles-blocks-myofibroblastic-differentiation
#3
Tzu-Pin Shentu, Tse-Shun Huang, Mateja Cernelc-Kohan, Joy Chan, Simon S Wong, Celia R Espinoza, Chunting Tan, Irene Gramaglia, Henri van der Heyde, Shu Chien, James S Hagood
Bone marrow-derived mesenchymal stem cells (MSC) have been promoted for multiple therapeutic applications. Many beneficial effects of MSCs are paracrine, dependent on extracellular vesicles (EVs). Although MSC-derived EVs (mEVs) are beneficial for acute lung injury and pulmonary fibrosis, mechanisms of mEV uptake by lung fibroblasts and their effects on myofibroblastic differentiation have not been established. We demonstrate that mEVs, but not fibroblast EVs (fEVs), suppress TGFβ1-induced myofibroblastic differentiation of normal and idiopathic pulmonary fibrosis (IPF) lung fibroblasts...
December 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29258429/mesenchymal-stem-cell-conditioned-medium-alleviates-oxidative-stress-injury-induced-by-hydrogen-peroxide-via-regulating-mir143-and-its-target-protein-in-hepatocytes
#4
Xuejing Xu, Dong Li, Xue Li, Qing Shi, Xiuli Ju
BACKGROUND: To investigate the impact of miRNA (microRNA) on hepatic oxidative stress damage under the human mesenchymal stem cell conditioned medium (MSC-CM) and explore the roles of the beta-1 adrenergic receptor (ADRB1) and hexokinase 2 (HK2) in this process. METHODS: Hydrogen peroxide was used to induce oxidative stress injury in the human normal liver cell line L02. MSC-CM was separately prepared. After treatment with MSC-CM, the protective effects of MSC-CM on oxidative stress injury were assessed by changes in apoptosis, cell viability, cell cycle, and mitochondrial membrane potential...
December 19, 2017: BMC Immunology
https://www.readbyqxmd.com/read/29250120/human-chorionic-plate-derived-mesenchymal-stem-cells-restore-hepatic-lipid-metabolism-in-a-rat-model-of-bile-duct-ligation
#5
Yun Bin Lee, Jong Ho Choi, Eun Nam Kim, Jin Seok, Hyun-Jung Lee, Jung-Hwan Yoon, Gi Jin Kim
In cholestatic liver diseases, impaired bile excretion disrupts lipid homeostasis. We investigated changes of lipid metabolism, including mitochondrial β-oxidation, in a rat model of bile duct ligation (BDL) in which chorionic plate-derived mesenchymal stem cells (CP-MSCs) were transplanted. Serum cholesterol level, which was elevated after BDL, was significantly decreased following CP-MSC transplantation. The expression levels of genes involved in intracellular lipid uptake, including long-chain fatty acyl-CoA synthetases and fatty acid transport proteins, were decreased in rats after BDL; however, they were not significantly changed by subsequent CP-MSC transplantation...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29239062/gvhd-amelioration-by-human-bone-marrow-mesenchymal-stromal-stem-cell-derived-extracellular-vesicles-is-associated-with-peripheral-preservation-of-naive-t-cell-populations
#6
Sumie Fujii, Yasuo Miura, Aya Fujishiro, Takero Shindo, Yutaka Shimazu, Hideyo Hirai, Hidetoshi Tahara, Akifumi Takaori-Kondo, Tatsuo Ichinohe, Taira Maekawa
A substantial proportion of patients with acute graft-versus-host disease (aGVHD) respond to cell therapy with culture-expanded human bone marrow mesenchymal stromal/stem cells (BM-MSCs). However, the mechanisms by which these cells can ameliorate aGVHD-associated complications remain to be clarified. We show here that BM-MSC-derived extracellular vesicles (EVs) recapitulated the therapeutic effects of BM-MSCs against aGVHD. Systemic infusion of human BM-MSC-derived EVs prolonged the survival of mice with aGVHD and reduced the pathologic damage in multiple GVHD-targeted organs...
December 14, 2017: Stem Cells
https://www.readbyqxmd.com/read/29207054/use-of-methylation-profiling-to-identify-significant-differentially-methylated-genes-in-bone-marrow-mesenchymal-stromal-cells-from-acute-myeloid-leukemia
#7
Jing Huang, Zhi Liu, Yufan Sun, Qi Zhong, Li Xu, Ruimin Ou, Cheng Li, Rui Chen, Mengdong Yao, Qing Zhang, Shuang Liu
The present study aimed to characterize the epigenetic architecture by studying the DNA methylation signature in bone marrow mesenchymal stem cells (BM‑MSCs) from patients with acute myeloid leukemia (AML). Microarray dataset GSE79695 was downloaded from the Gene Expression Omnibus database. Differentially methylated sites and differentially methylated CpG islands were identified in BM‑MSC samples from patients with AML compared with controls. MicroRNAs (miRs) encoding genes covering differentially methylated sites were found and the regulation network was constructed...
November 17, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29192241/microrna-21-regulates-osteogenic-differentiation-of-periodontal-ligament-stem-cells-by-targeting-smad5
#8
Fulan Wei, Shuangyan Yang, Qingyuan Guo, Xin Zhang, Dapeng Ren, Tao Lv, Xin Xu
Human periodontal ligament stem cells (hPDLSCs) are mesenchymal stem cells (MSCs) derived from dental and craniofacial tissues that exhibit high potential for differentiation into osteoblasts. Recently, microRNAs (miRNAs) have been established to play important roles in MSC osteogenesis. In the current study, we report that miR-21 was down-regulated in osteogenically differentiated PDLSCs. Overexpression of miR-21 significantly inhibited osteogenesis of hPDLSC, whereas its inhibition demonstrated the opposite effects...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29178928/microrna-133-overexpression-promotes-the-therapeutic-efficacy-of-mesenchymal-stem-cells-on-acute-myocardial-infarction
#9
Yueqiu Chen, Yunfeng Zhao, Weiqian Chen, Lincen Xie, Zhen-Ao Zhao, Junjie Yang, Yihuan Chen, Wei Lei, Zhenya Shen
BACKGROUND: Our study aim was to evaluate the therapeutic efficacy and mechanisms of miR-133-overexpressing mesenchymal stem cells (MSCs) on acute myocardial infarction. METHODS: Rat MSCs were isolated and purified by whole bone marrow adherent culturing. After transfection with the agomir or antagomir of miR-133, MSCs were collected for assay of cell vitality, apoptosis, and cell cycle progression. At the same time, exosomes were isolated from the supernatant to analyze the paracrine miR-133...
November 25, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29155727/microrna-based-liquid-biopsy-the-experience-of-the-plasma-mirna-signature-classifier-msc-for-lung-cancer-screening
#10
Mavis Mensah, Cristina Borzi, Carla Verri, Paola Suatoni, Davide Conte, Ugo Pastorino, Fortunato Orazio, Gabriella Sozzi, Mattia Boeri
The development of a minimally invasive test, such as liquid biopsy, for early lung cancer detection in its preclinical phase is crucial to improve the outcome of this deadly disease. MicroRNAs (miRNAs) are tissue specific, small, non-coding RNAs regulating gene expression, which may act as extracellular messengers of biological signals derived from the cross-talk between the tumor and its surrounding microenvironment. They could thus represent ideal candidates for early detection of lung cancer. In this work, a methodological workflow for the prospective validation of a circulating miRNA test using custom made microfluidic cards and quantitative Real-Time PCR in plasma samples of volunteers enrolled in a lung cancer screening trial is proposed...
October 26, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155506/how-desirable-and-undesirable-features-of-na%C3%A3-ve-or-genetically-reengineered-mesenchymal-stem-cells-are-being-considered-in-preclinical-or-clinical-assays
#11
Carlos González-Villarreal, Herminia Guadalupe Martínez-Rodríguez, Salvador Said-Fernández
The implantation of adult mesenchymal stem cells (MSCs) has become a promising alternative in cancer treatments. Accordingly, in this article we revised the ultimate advances in the knowledge on the MSC-homing mechanism, the cancer cell and MSCs interactions and the microvesicles and exosomes used by malignant cells to transport and deliver pro-cancer cytokines or microRNA (miRNA), or by MSCs to favor or fight cancer progression. In addition, we analyzed the current knowledge generated by ongoing or terminated preclinical and clinical trials, using naive MSCs as natural anti-cancer living factors or gene-engineered MSCs as cytokine delivering vehicles, where anti-cancer cytokines were chosen and the pro-cancer factors were avoided...
July 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29155179/microrna-let-7f-5p-regulates-neuronal-differentiation-of-rat-bone-marrow-mesenchymal-stem-cells-by-targeting-par6%C3%AE
#12
Linlin Han, Yiwen Wang, Lin Wang, Bin Guo, Shuang Pei, Yanjie Jia
Par6α (partitioning defective 6 homologue alpha), a component of the Par3/Par6/aPKC complex, was recently shown to be essential for axon specification during neuronal development. However, the biological functions and regulatory mechanisms of Par6α in the mesenchymal stem cell (MSC) differentiation process have not been investigated. In this study, we found that the expression of let-7f-5p was downregulated during differentiation of bone marrow-derived MSCs to neuron-like cells. Interestingly, Par6α was predicted to be a target gene of let-7f-5p by computerized analysis and the luciferase reporter assay...
November 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29150917/regulation-of-mesenchymal-stem-cell-differentiation-by-transforming-growth-factor-beta-superfamily
#13
Jelena Krstic, Drenka Trivanovic, Hristina Obradovic, Tamara Kukolj, Diana Bugarski, Juan F Santibanez
The ability to differentiate into cells of different lineage, such as muscle, bone, cartilage and fat, is the chief value of adult mesenchymal stem cells (MSCs) which can be used with the final aim to regenerate damaged tissue. Due to potential use, as well as importance in tissue development, a number of questions have been raised regarding the molecular mechanisms of MSC differentiation. As one of the crucial mediators in organism development, transforming growth factor beta (TGF-β) superfamily directs MSCs commitment in the selection of differentiation pathways...
November 16, 2017: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29116031/mirna-profiling-of-nurown%C3%A2-mesenchymal-stem-cells-secreting-neurotrophic-factors
#14
Yael Gothelf, Haggai Kaspi, Natalie Abramov, Revital Aricha
BACKGROUND: MSC-NTF cells are Mesenchymal Stromal Cells (MSC) induced to express high levels of neurotrophic factors (NTFs) using a culture-medium based approach. MSC-NTF cells have been successfully studied in clinical trials for Amyotrophic Lateral Sclerosis (ALS) patients. MicroRNAs (miRNA) are short non-coding RNA molecules that coordinate post-transcriptional regulation of multiple gene targets. The purpose of this study was to determine whether the miRNA profile could provide a tool for MSC-NTF cell characterization and to distinguish them from the matched MSC from which they are derived...
November 7, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29111380/hypoxia-inducible-factor-1%C3%AE-may-regulate-the-commitment-of-mesenchymal-stromal-cells-toward-angio-osteogenesis-by-mirna-675-5p
#15
Viviana Costa, Lavinia Raimondi, Alice Conigliaro, Francesca Salamanna, Valeria Carina, Angela De Luca, Daniele Bellavia, Riccardo Alessandro, Milena Fini, Gianluca Giavaresi
BACKGROUND AIMS: During bone formation, angiogenesis and osteogenesis are regulated by hypoxia, which is able to induce blood vessel formation, as well as recruit and differentiate human mesenchymal stromal cells (hMSCs). The molecular mechanisms involved in HIF-1α response and hMSC differentiation during bone formation are still unclear. This study aimed to investigate the synergistic role of hypoxia and hypoxia-mimetic microRNA miR-675-5p in angiogenesis response and osteo-chondroblast commitment of hMSCs...
October 27, 2017: Cytotherapy
https://www.readbyqxmd.com/read/29107738/extracellular-vesicles-released-from-mesenchymal-stromal-cells-stimulate-bone-growth-in-osteogenesis-imperfecta
#16
Satoru Otsuru, Laura Desbourdes, Adam J Guess, Ted J Hofmann, Theresa Relation, Takashi Kaito, Massimo Dominici, Masahiro Iwamoto, Edwin M Horwitz
BACKGROUND: Systemic infusion of mesenchymal stromal cells (MSCs) has been shown to induce acute acceleration of growth velocity in children with osteogenesis imperfecta (OI) despite minimal engraftment of infused MSCs in bones. Using an animal model of OI we have previously shown that MSC infusion stimulates chondrocyte proliferation in the growth plate and that this enhanced proliferation is also observed with infusion of MSC conditioned medium in lieu of MSCs, suggesting that bone growth is due to trophic effects of MSCs...
October 26, 2017: Cytotherapy
https://www.readbyqxmd.com/read/29105402/adipose-derived-stem-cells-affect-mir-145-and-p53-expressions-of-co-cultured-hematopoietic-stem-cells
#17
Tahereh Foroutan, Aisan Farhadi, Saeed Abroun, Bahram Mohammad Soltani
OBJECTIVES: Umbilical cord blood is used for transplantation purposes in regenerative medicine of hematological disorders. MicroRNAs are important regulators of gene expression that control both physiological and pathological processes such as cancer development and incidence. There is a new relation between p53 (tumor suppressor gene) and miR-145 (suppressor of cell growth) upregulation. In this study, we have assessed how adipose-derived stem cells (ADSCs) affect the expansion of hematopoietic stem cells (HSCs), as well as miR-145 and p53 expressions...
January 2018: Cell Journal
https://www.readbyqxmd.com/read/29102598/dicer1-gene-and-mirna-dysregulation-in-mesenchymal-stem-cells-of-patients-with-myelodysplastic-syndrome-and-acute-myeloblastic-leukemia
#18
Hakan Ozdogan, Bala Gur Dedeoglu, Yasemin Oztemur Islakoglu, Alp Aydos, Sevil Kose, Arzu Atalay, Zeynep Arzu Yegin, Ferit Avcu, Duygu Uckan Cetinkaya, Osman Ilhan
Multipotent mesenchymal stem cells (MSC) are key components of the bone marrow (BM) microenvironment. The contribution of this microenvironment to the pathophysiology of myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML) is not well defined. A recent study in mice demonstrated that DICER1 gene deletion in osteoprogenitor cells from the BM microenvironment suppressed osteogenic differentiation and induced MDS and AML-like haematological findings. The present study evaluated the expression profiles of microRNAs (miRNAs) and DICER1 gene in BM-derived MSC of patients with AML (n=12), MDS (n=10) and healthy controls (HC) (n=8)...
October 31, 2017: Leukemia Research
https://www.readbyqxmd.com/read/29067438/mirna-140-inhibits-c3h10t1-2-mesenchymal-stem-cell-proliferation-by-targeting-cxcl12-during-transforming-growth-factor-%C3%AE-3-induced-chondrogenic-differentiation
#19
Qingde Wa, Yi Liu, Shuai Huang, Peiheng He, Jianwei Zuo, Xing Li, Ziqing Li, Liming Dong, Jiachen Peng, Shuhong Wu, Fang Chen, Dongfeng Cai, Xuenong Zou, Wenbo Liao
The aim of the present study was to investigate the role of microRNA (miRNA or miR)-140 in C3H10T1/2 mesenchymal stem cells (MSCs). Cluster analysis was used to evaluate the miRNA expression profile. The expression level of miRNA‑140 was validated by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR). TargetScan and microRNA.org databases were used to predict target miRNAs and cartilage‑associated target genes. Binding sites between miR‑140 and the target gene were predicted by bioinformatics software...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29064609/the-micronome-of-mesenchymal-stromal-cells-is-partially-responsive-to-inflammation
#20
Hussein Fayyad-Kazan, Mohammad Fayyad-Kazan, Makram Merimi, Nathalie Meuleman, Dominique Bron, Laurence Lagneaux, Mehdi Najar
Mesenchymal stromal cells (MSCs) display a special immunological profile that allows their potential use as immunotherapeutic cells. Nowadays, Foreskin (FSK) represents a valuable reservoir of MSCs with International Society for cellular Therapy (ISCT) compliant criteria and relevant functional properties. However, their mode of action is poorly understood and needs to be more elucidated to optimize their therapeutic use. Because microRNAs (miRNAs) act as key regulators in a wide variety of biological processes, we decided to establish the micronome of FSK-MSCs, the influence of inflammation and the predicted target pathways...
October 24, 2017: Cell Biology International
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