Preconditioning with interleukin‐1 beta and interferon‐gamma enhances the efficacy of human umbilical cord blood‐derived mesenchymal stem cells‐based therapy via enhancing prostaglandin E2 secretion and indoleamine 2,3‐dioxygenase activity in dextran sulfate sodium‐induced colitis

2019 ◽  
Vol 13 (10) ◽  
pp. 1792-1804 ◽  
Author(s):  
Yeonsil Yu ◽  
Sae Mi Yoo ◽  
Hwan Hee Park ◽  
Song Yi Baek ◽  
Yoon‐Jin Kim ◽  
...  
Author(s):  
Ying Li ◽  
Ke Ma ◽  
Luping Zhang ◽  
Hong Xu ◽  
Nan Zhang

Inflammatory bowel disease (IBD), which main clinical manifestations include abdominal pain and diarrhea occurring repeatedly, is a kind of autoimmune disease. It has been reported in preceding studies that mesenchymal stem cells (MSCs) can reduce inflammation by regulating the function of immune cells. But studies about the interaction between MSCs and adaptive immune cells, especially in IBD models, are insufficient. Therefore, the objective of this research was to estimate the therapeutic effects of MSCs from human umbilical cord blood (hUCB-MSCs) in an IBD model of rodent and to clarify the therapeutic mechanisms of hUCB-MSCs. Dextran sulfate sodium (DSS) was used to induce colitis in rodent. Mice with colitis were treated with intraperitoneal infusions of hUCB-MSCs and evaluated for mortality and diverse disease symptoms containing weight reduction, diarrhea, and bloody stools. The levels of histopathologic severity and generation of regulatory T cells (Treg) were also determined. Treatment with hUCB-MSCs ameliorated the clinical and histopathologic severity of acute and chronic colitis in mice. Furthermore, T cell infiltration into the inflamed colon was significantly decreased (p = 0.0175), and Foxp3+ cells were substantially higher in the hUCB-MSC group than that of the DSS group. Our results suggest that hUCB-MSCs are able to alleviate inflammation via adding Foxp3+ Tregs in an IBD model of mouse. As a result, these findings suggest the opportunity of hUCB-MSC being applied to patients with IBD.


2021 ◽  
Vol 11 (9) ◽  
pp. 1838-1843
Author(s):  
Xiaohong Zhou ◽  
Xuzhong Hao ◽  
Feifei He

To investigate whether exosomes (exo) derived from human umbilical cord mesenchymal stem cells (huMSCs) and microRNA (miRNA)-342 have a protective effect on severe acute pancreatitis (SAP). Human umbilical cord blood was collected to extract huMSC-exo. With sham-operated mice as control group (n = 10), the other mice were induced to SAP model (n = 20), while 10 of the SAP mice received treatment with huMSC-exo. ELISA was performed to determine amylase and TAP level as well as inflammatory factors and HE staining to evaluate pathological changes of pancreatic tissue. The expression of miR-342 and Shh, Ptchl, and Smo in the Hh signal pathway was detected using RT-qPCR. The expression of miR-342 and the mRNA expression of Shh, Ptchl, and Smo was higher than that in model group (p < 0.05). The level of serum amylase, trypsinogen, and IFN-γ,Fasl, and IL-6 was upregulated in pancreas tissues of SAP mice relative to healthy mice, but their levels were decreased upon treatment with huMSC-exo and slightly higher than those of the control group, just not significantly. Collectively, the huMSC-exo may activate the Hh signaling pathway by regulating the expression of miR-342 increasing the expression of Shh, Ptchl, and Smo, and thereby healing of damaged pancreatic tissues in SAP.


2013 ◽  
Vol 8 (1) ◽  
pp. 82-90 ◽  
Author(s):  
Iwona Grabowska ◽  
Wladyslawa Streminska ◽  
Katarzyna Janczyk-Ilach ◽  
Eugeniusz K. Machaj ◽  
Zygmunt Pojda ◽  
...  

2011 ◽  
Vol 22 (6) ◽  
pp. 733-743 ◽  
Author(s):  
Chung Heon Ryu ◽  
Sang-Hoon Park ◽  
Soon A Park ◽  
Seong Muk Kim ◽  
Jung Yeon Lim ◽  
...  

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