Adult skeletal muscle stem cells differentiate into endothelial lineage and ameliorate renal dysfunction after acute ischemia

2004 ◽  
Vol 287 (4) ◽  
pp. F621-F627 ◽  
Author(s):  
Maria Arriero ◽  
Sergey V. Brodsky ◽  
Olga Gealekman ◽  
Paul A. Lucas ◽  
Michael S. Goligorsky

We previously demonstrated that endothelial cells are severely damaged during renal ischemia-reperfusion and that transplantation of adult human endothelial cells into athymic nude rats subjected to renal ischemia resulted in a dramatic protection of the kidney against injury and dysfunction. Morphological studies demonstrated the engraftment of transplanted cells into renal microvasculature. The goal of the present study was to determine the potential efficacy of in vitro expanded skeletal muscle-derived stem cells (MDSC) differentiated along the endothelial lineage in ameliorating acute renal injury. MDSC obtained from the Tie-2-green fluorescent protein (GFP) mice were used as donors of differentiated and nondifferentiated stem cells. FVB mice, used as recipients, were subjected to renal ischemia and transplanted with the above MDSC. The differentiation of MDSC along the endothelial lineage was monitored by the appearance of Tie-2 promotor-driven expression of GFP. These mouse endothelial cell antigen-, endothelial nitric oxide synthase (eNOS)-, Flk-1-, Flt-1-, and CD31-positive cells engrafted into renal microvasculature and significantly protected short-term renal function after ischemia. Transplantation of nondifferentiated MDSC characterized by the expression of Sca-1 (low levels of CD34, Flk-1, and cKit, and negative for GFP, eNOS, and CD31) did not improve short-term renal dysfunction. In conclusion, the data 1) provide a rich source of MDSC, 2) delineate protocols for their in vitro expansion and differentiation along the endothelial lineage, and 3) demonstrate their efficacy in preserving renal function immediately after ischemic insult.

Author(s):  
Kamil Wartalski ◽  
Gabriela Gorczyca ◽  
Jerzy Wiater ◽  
Zbigniew Tabarowski ◽  
Małgorzata Duda

AbstractEndothelial cells (ECs), the primary component of the vasculature, play a crucial role in neovascularization. However, the number of endogenous ECs is inadequate for both experimental purposes and clinical applications. Porcine ovarian putative stem cells (poPSCs), although not pluripotent, are characterized by great plasticity. Therefore, this study aimed to investigate whether poPSCs have the potential to differentiate into cells of endothelial lineage. poPSCs were immunomagnetically isolated from postnatal pig ovaries based on the presence of SSEA-4 protein. Expression of mesenchymal stem cells (MSCs) markers after pre-culture, both at the level of mRNA: ITGB1, THY, and ENG and corresponding protein: CD29, CD90, and CD105 were significantly higher compared to the control ovarian cortex cells. To differentiate poPSCs into ECs, inducing medium containing vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), insulin-like growth factor (IGF), epidermal growth factor (EGF), ascorbic acid, and heparin was applied. After 14 days, poPSC differentiation into ECs was confirmed by immunofluorescence staining for vascular endothelial cadherin (VECad) and vascular endothelial growth factor receptor-2 (VEGFR-2). Semi-quantitative WB analysis of these proteins confirmed their high abundance. Additionally, qRT-PCR showed that mRNA expression of corresponding marker genes: CDH5, KDR was significantly higher compared with undifferentiated poPSCs. Finally, EC functional status was confirmed by the migration test that revealed that they were capable of positive chemotaxis, while tube formation assay demonstrated their ability to develop capillary networks. In conclusion, our results provided evidence that poPSCs may constitute the MSC population in the ovary and confirmed that they might be a potential source of ECs for tissue engineering.


2014 ◽  
Vol 34 (suppl_1) ◽  
Author(s):  
Sangho Lee ◽  
Min Kyung Lee ◽  
Hyunjoon Kong ◽  
Young-sup Yoon

Various hydrogels are used to create vascular structure in vitro or to improve cell engraftment to overcome low cell survival in vivo, a main hurdle for bare cell therapy Recently we developed a modified alginate hydrogel within which microchannels are aligned to guide the direction and spatial organization of loaded cells. We investigated whether these cell constructs in which HUVECs and human mesenchymal stem cells (hMSCs) are co-loaded in this novel microchanneled hydrogel facilitate formation of vessels in vitro and in vivo, and enhance recovery of hindlimb ischemia. We crafted a modified alginate hydrogel which has microchannels, incorporates a cell adhesion peptide RGD, and was encapsulated with VEGF. We then compared vascular structure formation between the HUVEC only (2 x 105 cells) group and the HUVEC plus hMSC group. In the HUVEC+hMSC group, we mixed HUVECs and hMSCs at the ratio of 3:1. For cell tracking, we labeled HUVECs with DiO, a green fluorescence dye. After loading cells into the microchannels of the hydrogel, these constructs were cultured for seven days and were examined by confocal microscopy. In the HUVEC only group, HUVECs stands as round shaped cells without forming tubular structures within the hydrogel. However, in the HUVEC+hMSC group, HUVECs were stretched out and connected with each other, and formed vessel-like structure following pre-designed microchannels. These results suggested that hMSCs play a critical role for vessel formation by HUVECs. We next determined their in vivo effects using a mouse hindlimb ischemia model. We found that engineered HUVEC+hMSC group showed significantly higher perfusion over 4 weeks compared to the engineered HUVEC only group or bare cell (HUVEC) group. Confocal microscopic analysis of harvested tissues showed more robust vessel formation within and outside of the cell constructs and longer term cell survival in HUVEC+hMSC group compared to the other groups. In conclusion, this novel microchanneled alginate hydrogel facilitates aligned vessel formation of endothelial cells when combined with MSCs. This vessel-embedded hydrogel constructs consisting of HUVECs and MSCs contribute to perfusable vessel formation, prolong cell survival in vivo, and are effective for recovering limb ischemia.


Author(s):  
О.В. Першина ◽  
А.В. Пахомова ◽  
Н.Н. Ермакова ◽  
О.Ю. Рыбалкина ◽  
В.А. Крупин ◽  
...  

Цель исследования состояла в выявлении информативных клеточных маркеров сосудистых осложнений, регенерации микрососудистой сети и воспаления в венозной крови здоровых волонтеров, больных с метаболическим синдромом, сахарным диабетом 1 и 2 типа. Методы. Обследованы больные с метаболическим синдромом (МС), диабетом 2 типа без осложнений, диабетом 1 типа средней степени тяжести и здоровые волонтеры. Диагноз пациентов подтвержден общеклиническими, биохимическими, коагулометрическими и иммуноферментными методами исследования, для оценки экспрессии антигенов использовался многопараметрический цитометрический анализ. Результаты. При анализе экспрессии маркеров показано изменение числа эндотелиальных клеток, мезенхимальных стволовых клеток (МСК) и гемопоэтических стволовых клеток (ГСК) в крови в зависимости от патологии. Эндотелиальные клетки миелоидного (CD45CD14CD34CD309CD144CD31) и немиелоидного (CD45CD14CD34CD309CD144CD31) происхождения, CD309-эндотелиальные клетки и МСК (CD44CD73CD90CD105) предлагаются в качестве маркеров повреждения эндотелия при диабетической симптоматике. При этом ГСК (CD45CD34) могут выступать ценным диагностическим и прогностическим маркером воспаления. Заключение. Для подтверждения сосудистых повреждений и прогноза развития осложнений при диабете 1 и 2 типа в венозной крови пациентов целесообразно оценивать эндотелиальные прогениторные клетки (ЭПК) не костномозговой локализации (CD31CD309CD144) и костномозговой локализации (CD34CD309), и ЭПК c высоким регенеративным потенциалом (CD45CD34CD31CD144). Циркулирующие ЭПК, формирующие колонии in vitro (CD45CD34CD31), рекомендуется использовать в качестве дифференциального маркера состояния регенерации эндотелия при диабете 2 типа. The aim of this study was to identify mesenchymal stem cells (MSC), hematopoietic stem cells (HSC), mature endothelial cells, and endothelial progenitor cells (EPC) in the blood of healthy volunteers, patients with metabolic syndrome, and type 1 and 2 diabetes mellitus as new, informative cellular markers of vascular complications, endothelial regeneration, and inflammation. Methods. The diagnosis was confirmed by general clinical, biochemical, coagulometeric and ELISA studies; multi-parameter cytometric assay was used for evaluation of antigen expression. Results. Changes in the count of MSC, HSC, mature endothelial cells, and endothelial progenitor cells in blood of patients with metabolic syndrome and type 1 and 2 diabetes depended on the type of pathology. We propose using endothelial cells of myeloid (CD45CD14CD34CD309CD144CD31) and non-myeloid origin (CD45CD14CD34CD309CD144CD31), CD309-endothelial cells, and MSCs with the CD44CD73CD90CD105 phenotype as nonspecific markers of endothelial damage in presence of diabetic symptoms. Furthermore, HSCs (CD45CD34) can be used as a valuable diagnostic and prognostic marker of inflammation. Conclusions. It is relevant to evaluate EPCs of non-bone marrow localization (CD31CD309CD144) and bone marrow localization (CD34CD309) and EPCs with a high regenerative potential (CD45CD34CD31CD144) in the blood of patients with type 1 and 2 diabetes to confirm the presence of vascular damage and predict development of complications. Circulating, in vitro colony-forming EPCs (CD45CD34CD31) are recommended as a differential marker for inhibition of endothelial regeneration in type 2 diabetes.


Stem Cells ◽  
2007 ◽  
Vol 25 (7) ◽  
pp. 1761-1768 ◽  
Author(s):  
Irina A. Potapova ◽  
Glenn R. Gaudette ◽  
Peter R. Brink ◽  
Richard B. Robinson ◽  
Michael R. Rosen ◽  
...  

2019 ◽  
Vol 2019 ◽  
pp. 1-18 ◽  
Author(s):  
Doaa Aboalola ◽  
Victor K. M. Han

As mesenchymal stem cells (MSCs) are being investigated for regenerative therapies to be used in the clinic, delineating the roles of the IGF system in MSC growth and differentiation, in vitro, is vital in developing these cellular therapies to treat degenerative diseases. Muscle differentiation is a multistep process, starting with commitment to the muscle lineage and ending with the formation of multinucleated fibers. Insulin-like growth factor binding protein-6 (IGFBP-6), relative to other IGFBPs, has high affinity for IGF-2. However, the role of IGFBP-6 in muscle development has not been clearly defined. Our previous studies showed that in vitro extracellular IGFBP-6 increased myogenesis in early stages and could enhance the muscle differentiation process in the absence of IGF-2. In this study, we identified the signal transduction mechanisms of IGFBP-6 on muscle differentiation by placental mesenchymal stem cells (PMSCs). We showed that muscle differentiation required activation of both AKT and MAPK pathways. Interestingly, we demonstrated that IGFBP-6 could compensate for IGF-2 loss and help enhance the muscle differentiation process by triggering predominantly the MAPK pathway independent of activating either IGF-1R or the insulin receptor (IR). These findings indicate the complex interactions between IGFBP-6 and IGFs in PMSC differentiation into the skeletal muscle and that the IGF signaling axis, specifically involving IGFBP-6, is important in muscle differentiation. Moreover, although the major role of IGFBP-6 is IGF-2 inhibition, it is not necessarily the case that IGFBP-6 is the main modulator of IGF-2.


2019 ◽  
Vol 20 (16) ◽  
pp. 3932 ◽  
Author(s):  
Barbara Świerczek-Lasek ◽  
Jacek Neska ◽  
Agata Kominek ◽  
Łukasz Tolak ◽  
Tomasz Czajkowski ◽  
...  

Pluripotent stem cells convert into skeletal muscle tissue during teratoma formation or chimeric animal development. Thus, they are characterized by naive myogenic potential. Numerous attempts have been made to develop protocols enabling efficient and safe conversion of pluripotent stem cells into functional myogenic cells in vitro. Despite significant progress in the field, generation of myogenic cells from pluripotent stem cells is still challenging—i.e., currently available methods require genetic modifications, animal-derived reagents, or are long lasting—and, therefore, should be further improved. In the current study, we investigated the influence of interleukin 4, a factor regulating inter alia migration and fusion of myogenic cells and necessary for proper skeletal muscle development and maintenance, on pluripotent stem cells. We assessed the impact of interleukin 4 on proliferation, selected gene expression, and ability to fuse in case of both undifferentiated and differentiating mouse embryonic stem cells. Our results revealed that interleukin 4 slightly improves fusion of pluripotent stem cells with myoblasts leading to the formation of hybrid myotubes. Moreover, it increases the level of early myogenic genes such as Mesogenin1, Pax3, and Pax7 in differentiating embryonic stem cells. Thus, interleukin 4 moderately enhances competence of mouse pluripotent stem cells for myogenic conversion.


2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Danilo Sales Bocalini ◽  
Rafael da Silva Luiz ◽  
Kleiton Augusto Santos Silva ◽  
Andrey Jorge Serra ◽  
Renata Andrade Avila ◽  
...  

Despite the strong evidence on the cardiac and renal damages after chronic exposure to cigarette smoke, there is a paucity of data on its short-term effects. The study evaluated the short-term effects of cigarette smoking on left ventricular (LV) remodeling, in vitro myocardial and renal function. Female Wistar rats were randomized to control (C) and cigarette smoking rats for eight weeks. Physical capacity was assessed using an adapted model of exhaustive swim; left ventricle (LV) morphology and function were also evaluated. Renal function was assessed by creatinine clearance and urine protein. The in vitro myocardial performance was analyzed in isolated papillary muscles. Rats exhibited reduced physical capacity after short-term cigarette smoking. Although there was no change on LV function, reduced chamber diameter was found in the smoking group associated with an increased LV wall thickness. There was augmented cardiac mass compared to C that was confirmed by increased cardiomyocyte nucleus volume, but in vitro myocardial performance and renal function were unchanged. A short-term cigarette smoking induces cardiac remodeling without abnormalities in function. The smoking group still preserved renal function and in vitro myocardial performance. However, the reduced physical capacity may suggest an impairment of the cardiac reserve.


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