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https://www.readbyqxmd.com/read/30076187/therapeutic-effects-of-human-mesenchymal-stem-cell-microvesicles-in-an-ex-vivo-perfused-human-lung-injured-with-severe-e-coli-pneumonia
#1
Jeonghyun Park, Seonguk Kim, Hyungsun Lim, Airan Liu, Shuling Hu, JaeHoon Lee, Hanjing Zhuo, Qi Hao, Michael A Matthay, Jae-W Lee
BACKGROUND: We previously reported that microvesicles (MVs) released by human mesenchymal stem cells (MSC) were as effective as the cells themselves in both Escherichia coli lipopolysaccharide and live bacteria-induced acute lung injury (ALI) mice models. However, it remained unclear whether the biological effect of MSC MV can be applied to human ALI. METHODS: In the current study, we tested the therapeutic effects of MSC MVs in a well-established ex vivo perfused human model of bacterial pneumonia...
August 3, 2018: Thorax
https://www.readbyqxmd.com/read/29737632/mesenchymal-stem-cell-microvesicles-restore-protein-permeability-across-primary-cultures-of-injured-human-lung-microvascular-endothelial-cells
#2
Shuling Hu, Jeonghyun Park, Airan Liu, JaeHoon Lee, Xiwen Zhang, Qi Hao, Jae-Woo Lee
Our previous study demonstrated that mesenchymal stem cell (MSC) microvesicles (MV) reduced lung inflammation, protein permeability, and pulmonary edema in endotoxin-induced acute lung injury in mice. However, the underlying mechanisms for restoring lung protein permeability were not fully understood. In this current study, we hypothesized that MSC MV would restore protein permeability across injured human lung microvascular endothelial cells (HLMVEC) in part through the transfer of angiopoietin-1 (Ang1) mRNA to the injured endothelium...
August 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27609711/microvesicles-from-brain-extract-treated-mesenchymal-stem-cells-improve-neurological-functions-in-a-rat-model-of-ischemic-stroke
#3
Ji Yong Lee, Eiru Kim, Seong-Mi Choi, Dong-Wook Kim, Kwang Pyo Kim, Insuk Lee, Han-Soo Kim
Transplantation of mesenchymal stem cells (MSCs) was reported to improve functional outcomes in a rat model of ischemic stroke, and subsequent studies suggest that MSC-derived microvesicles (MVs) can replace the beneficial effects of MSCs. Here, we evaluated three different MSC-derived MVs, including MVs from untreated MSCs (MSC-MVs), MVs from MSCs treated with normal rat brain extract (NBE-MSC-MVs), and MVs from MSCs treated with stroke-injured rat brain extract (SBE-MSC-MVs), and tested their effects on ischemic brain injury induced by permanent middle cerebral artery occlusion (pMCAO) in rats...
September 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/23484725/-research-progress-of-mesenchymal-stem-cell-derived-microvesicle
#4
Xiao-Qing Wang, Xiao-Jian Zhu, Ping Zou
Mesenchymal stem cell-derived microvesicle (MSC-MV) is a membrane secretory system which includes microparticle and exosome, and MSC-MV is released by MSC in resting or activated state. MSC-MV selectively package the biological active substances such as lipids, proteins, mRNA and miRNA but not loads them randomly. It has definitive effect of reducing tissue injury, promoting morphological and functional recovery of the injured tissue, and this effect is probably mediated by miRNA. What is more, the MSC-MV may also possess the biological function of immunological regulation, modulation of cell growth and differentiation...
February 2013: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/22148876/proteomic-analysis-of-microvesicles-derived-from-human-mesenchymal-stem-cells
#5
Han-Soo Kim, Do-Young Choi, So Jeong Yun, Seong-Mi Choi, Jeong Won Kang, Jin Woo Jung, Daehee Hwang, Kwang Pyo Kim, Dong-Wook Kim
Mesenchymal stem cells (MSCs) have emerged as a promising means for treating degenerative or incurable diseases. Recent studies have shown that microvesicles (MVs) from MSCs (MSC-MVs) contribute to recovery of damaged tissues in animal disease models. Here, we profiled the MSC-MV proteome to investigate their therapeutic effects. LC-MS/MS analysis of MSC-MVs identified 730 MV proteins. The MSC-MV proteome included five positive and two variable known markers of MSCs, but no negative marker, as well as 43 surface receptors and signaling molecules controlling self-renewal and differentiation of MSCs...
February 3, 2012: Journal of Proteome Research
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