scholarly journals Mesenchymal stem cells’ homing and cardiac tissue repair

2019 ◽  
Author(s):  
Renata Szydlak
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Tissue Repair ◽  
Cardiac Tissue ◽  
Cellular Therapy ◽  
Current Knowledge ◽  
Target Tissue ◽  
Intramyocardial Injection ◽  
Inflammatory Conditions ◽  
Cardiac Disorders

Nowadays, mesenchymal stem cells (MSCs) are essential players in cellular therapy and regenerative medicine. MSCs are used to treat cardiac disorders by intramyocardial injection or injection into the bloodstream. Therefore, a premise of successful MSC-based therapy is that the cells reach the site of injury and home the damaged tissue. In response to inflammatory conditions, MSCs can potentially move into the place of injury and colonize damaged tissues, where they participate in their regeneration. This review presents the current knowledge of the mechanisms of MSCs migration and target tissue homing in the field of cardiovascular therapies.

scholarly journals The Cross-Talk between Mesenchymal Stem Cells and Immune Cells in Tissue Repair and Regeneration

2021 ◽  
Vol 22 (5) ◽  
pp. 2472
Author(s):  
Carl Randall Harrell ◽  
Valentin Djonov ◽  
Vladislav Volarevic
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Immune Cells ◽  
Tissue Repair ◽  
Molecular Mechanisms ◽  
Current Knowledge ◽  
Multipotent Stem Cells ◽  
Tissue Repair And Regeneration ◽  
Almost All ◽  
And Function

Mesenchymal stem cells (MSCs) are self-renewable, rapidly proliferating, multipotent stem cells which reside in almost all post-natal tissues. MSCs possess potent immunoregulatory properties and, in juxtacrine and paracrine manner, modulate phenotype and function of all immune cells that participate in tissue repair and regeneration. Additionally, MSCs produce various pro-angiogenic factors and promote neo-vascularization in healing tissues, contributing to their enhanced repair and regeneration. In this review article, we summarized current knowledge about molecular mechanisms that regulate the crosstalk between MSCs and immune cells in tissue repair and regeneration.

scholarly journals Secreted Factors and EV-miRNAs Orchestrate the Healing Capacity of Adipose Mesenchymal Stem Cells for the Treatment of Knee Osteoarthritis

2020 ◽  
Vol 21 (5) ◽  
pp. 1582 ◽  
Author(s):  
Enrico Ragni ◽  
Carlotta Perucca Orfei ◽  
Paola De Luca ◽  
Alessandra Colombini ◽  
Marco Viganò ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Adipose Tissue ◽  
Clinical Outcomes ◽  
Stromal Vascular Fraction ◽  
Target Tissue ◽  
Inflammatory Conditions ◽  
Adipose Mesenchymal Stem Cells ◽  
Tissue Restoration ◽  
Strong Capacity

Mesenchymal stem cells (MSCs) derived from adipose tissue and used either as expanded cells or minimally manipulated cell preparations showed positive clinical outcomes in regenerative medicine approaches based on tissue restoration and inflammation control, like in osteoarthritis (OA). Recently, MSCs’ healing capacity has been ascribed to the large array of soluble factors, including soluble cytokines/chemokines and miRNAs conveyed within extracellular vesicles (EVs). Therefore, in this study, 200 secreted cytokines, chemokines and growth factors via ELISA, together with EV-embedded miRNAs via high-throughput techniques, were scored in adipose-derived MSCs (ASCs) cultivated under inflammatory conditions, mimicking OA synovial fluid. Both factors (through most abundantly expressed TIMP1, TIMP2, PLG and CTSS) and miRNAs (miR-24-3p, miR-222-3p and miR-193b-3p) suggested a strong capacity for ASCs to reduce matrix degradation activities, as those activated in OA cartilage, and switch synovial macrophages, often characterized by an M1 inflammatory polarization, towards an M2 phenotype. Moreover, the crucial importance of selecting the target tissue is discussed, showing how a focused search may greatly improve potency prediction and explain clinical outcomes. In conclusion, herein presented data shed light about the way ASCs regulate cell homeostasis and regenerative pathways in an OA-resembling environment, therefore suggesting a rationale for the use of MSC-enriched clinical products, such as stromal vascular fraction and microfragmented adipose tissue, in joint pathologies.

scholarly journals Ghrelin Improves Functional Survival of Engrafted Adipose-Derived Mesenchymal Stem Cells in Ischemic Heart through PI3K/Akt Signaling Pathway

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Dong Han ◽  
Wei Huang ◽  
Sai Ma ◽  
Jiangwei Chen ◽  
Lina Gao ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Cellular Therapy ◽  
Protective Effects ◽  
Western Blot Assay ◽  
Intramyocardial Injection ◽  
Pi3k Inhibitor Ly294002 ◽  
Cell Based Therapy

Mesenchymal stem cells (MSCs) have been proposed as a promising cell population for cell therapy and regenerative medicine applications. However, the low retention and poor survival of engrafted cells hampered the therapeutic efficacy of engrafted MSCs. Ghrelin is a 28-amino-acid peptide hormone and is proved to exert a protective effect on the cardiovascular system. This study is designed to investigate the protective effects of ghrelin on engrafted adipose-derived mesenchymal stem cells (ADMSCs) and its beneficial effects with cellular therapy in mice myocardial infarction (MI). Results showed that intramyocardial injection of ADMSCs combining with ghrelin administration inhibited host cardiomyocyte apoptosis, reduced fibrosis, and improved cardiac function. To reveal possible mechanisms, ADMSCs were subjected to hypoxia/serum deprivation (H/SD) injury to simulate ischemic conditionsin vivo. Ghrelin (10−8 M, 33712 pg/ml) improved ADMSCs survival under H/SD condition. Western blot assay revealed that ghrelin increased AKT phosphorylation bothin vivoandin vitro, decreased the proapoptotic protein Bax, and increased the antiapoptotic protein Bcl-2in vitro, while these effects were abolished by PI3K inhibitor LY294002. These revealed that ghrelin may serve as a promising candidate for hormone-driven approaches to improve the efficacy of mesenchymal stem cell-based therapy for cardiac ischemic diseaseviaPI3K/AKT pathway.

Adult Stem Cells and Biocompatible Scaffolds as Smart Drug Delivery Tools for Cardiac Tissue Repair

2013 ◽  
Vol 20 (28) ◽  
pp. 3429-3447 ◽  
Author(s):  
Stefania Pagliari ◽  
Sara Romanazzo ◽  
Diogo Mosqueira ◽  
Perpetua Pinto-do-O ◽  
Takao Aoyagi ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Stem Cells ◽  
Tissue Repair ◽  
Adult Stem Cells ◽  
Cardiac Tissue ◽  
Smart Drug ◽  
Smart Drug Delivery

scholarly journals Type II Collagen-Conjugated Mesenchymal Stem Cells Micromass for Articular Tissue Targeting

Biomedicines ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 880
Author(s):  
Shamsul Bin Sulaiman ◽  
Shiplu Roy Chowdhury ◽  
Mohd Fauzi Bin Mh Busra ◽  
Rizal Bin Abdul Rani ◽  
Nor Hamdan Bin Mohamad Yahaya ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Targeted Delivery ◽  
Expression Profiles ◽  
3D Culture ◽  
Type Ii Collagen ◽  
Cartilage Defects ◽  
Target Tissue ◽  
Type Ii ◽  
Antibody Conjugation

The tissue engineering approach in osteoarthritic cell therapy often requires the delivery of a substantially high cell number due to the low engraftment efficiency as a result of low affinity binding of implanted cells to the targeted tissue. A modification towards the cell membrane that provides specific epitope for antibody binding to a target tissue may be a plausible solution to increase engraftment. In this study, we intercalated palmitated protein G (PPG) with mesenchymal stem cells (MSCs) and antibody, and evaluated their effects on the properties of MSCs either in monolayer state or in a 3D culture state (gelatin microsphere, GM). Bone marrow MSCs were intercalated with PPG (PPG-MSCs), followed by coating with type II collagen antibody (PPG-MSC-Ab). The effect of PPG and antibody conjugation on the MSC proliferation and multilineage differentiation capabilities both in monolayer and GM cultures was evaluated. PPG did not affect MSC proliferation and differentiation either in monolayer or 3D culture. The PPG-MSCs were successfully conjugated with the type II collagen antibody. Both PPG-MSCs with and without antibody conjugation did not alter MSC proliferation, stemness, and the collagen, aggrecan, and sGAG expression profiles. Assessment of the osteochondral defect explant revealed that the PPG-MSC-Ab micromass was able to attach within 48 h onto the osteochondral surface. Antibody-conjugated MSCs in GM culture is a potential method for targeted delivery of MSCs in future therapy of cartilage defects and osteoarthritis.

Application potential of three-dimensional silk fibroin scaffold using mesenchymal stem cells for cardiac regeneration

2021 ◽  
pp. 088532822110185
Author(s):  
Yuksel Cetin ◽  
Merve G Sahin ◽  
Fatma N Kok
Keyword(s):  
Tissue Engineering ◽  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Silk Fibroin ◽  
Cardiac Tissue ◽  
Troponin I ◽  
Cardiac Tissue Engineering ◽  
Swelling Ratio ◽  
Differentiation Potential ◽  
Cardiomyogenic Differentiation

Cardiac tissue engineering focusing on biomaterial scaffolds incorporating cells from different sources has been explored to regenerate or repair damaged area as a lifesaving approach.The aim of this study was to evaluate the cardiomyocyte differentiation potential of human adipose mesenchymal stem cells (hAD-MSCs) as an alternative cell source on silk fibroin (SF) scaffolds for cardiac tissue engineering. The change in surface morphology of SF scaffolds depending on SF concentration (1–6%, w/v) and increase in their porosity upon application of unidirectional freezing were visualized by scanning electron microscopy (SEM). Swelling ratio was found to increase 2.4 fold when SF amount was decreased from 4% to 2%. To avoid excessive swelling, 4% SF scaffold with swelling ratio of 10% (w/w) was chosen for further studies.Biodegradation rate of SF scaffolds depended on enzymatic activity was found to be 75% weight loss of SF scaffolds at the day 14. The phenotype of hAD-MSCs and their multi-linage potential into chondrocytes, osteocytes, and adipocytes were shown by flow cytometry and immunohistochemical staining, respectively.The viability of hAD-MSCs on 3D SF scaffolds was determined as 90%, 118%, and 138% after 1, 7, and 14 days, respectively. The use of 3D SF scaffolds was associated with increased production of cardiomyogenic biomarkers: α-actinin, troponin I, connexin 43, and myosin heavy chain. The fabricated 3D SF scaffolds were proved to sustain hAD-MSCs proliferation and cardiomyogenic differentiation therefore, hAD-MSCs on 3D SF scaffolds may useful tool to regenerate or repair damaged area using cardiac tissue engineering techniques.

scholarly journals Influence of Egr-1 in Cardiac Tissue-Derived Mesenchymal Stem Cells in Response to Glucose Variations

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Daniela Bastianelli ◽  
Camilla Siciliano ◽  
Rosa Puca ◽  
Andrea Coccia ◽  
Colin Murdoch ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Target Genes ◽  
Cardiac Tissue ◽  
Early Response ◽  
Induced Response ◽  
Protein Levels ◽  
Short Period ◽  
Phenotype Analysis

Mesenchymal stem cells (MSCs) represent a promising cell population for cell therapy and regenerative medicine applications. However, how variations in glucose are perceived by MSC pool is still unclear. Since, glucose metabolism is cell type and tissue dependent, this must be considered when MSCs are derived from alternative sources such as the heart. The zinc finger transcription factor Egr-1 is an important early response gene, likely to play a key role in the glucose-induced response. Our aim was to investigate how short-term changes inin vitroglucose concentrations affect multipotent cardiac tissue-derived MSCs (cMSCs) in a mouse model of Egr-1 KO (Egr-1−/−). Results showed that loss of Egr-1 does not significantly influence cMSC proliferation. In contrast, responses to glucose variations were observed in wt but not in Egr-1−/−cMSCs by clonogenic assay. Phenotype analysis by RT-PCR showed that cMSCs Egr-1−/−lost the ability to regulate the glucose transporters GLUT-1 and GLUT-4 and, as expected, the Egr-1 target genes VEGF, TGFβ-1, and p300. Acetylated protein levels of H3 histone were impaired in Egr-1−/−compared to wt cMSCs. We propose that Egr-1 acts as immediate glucose biological sensor in cMSCs after a short period of stimuli, likely inducing epigenetic modifications.

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