scholarly journals Multicenter cell processing for cardiovascular regenerative medicine applications: the Cardiovascular Cell Therapy Research Network (CCTRN) experience

Cytotherapy ◽  
2010 ◽  
Vol 12 (5) ◽  
pp. 684-691 ◽  
Author(s):  
Adrian P. Gee ◽  
Sara Richman ◽  
April Durett ◽  
David McKenna ◽  
Jay Traverse ◽  
...  
Author(s):  
Kenji Osafune

AbstractWith few curative treatments for kidney diseases, increasing attention has been paid to regenerative medicine as a new therapeutic option. Recent progress in kidney regeneration using human-induced pluripotent stem cells (hiPSCs) is noteworthy. Based on the knowledge of kidney development, the directed differentiation of hiPSCs into two embryonic kidney progenitors, nephron progenitor cells (NPCs) and ureteric bud (UB), has been established, enabling the generation of nephron and collecting duct organoids. Furthermore, human kidney tissues can be generated from these hiPSC-derived progenitors, in which NPC-derived glomeruli and renal tubules and UB-derived collecting ducts are interconnected. The induced kidney tissues are further vascularized when transplanted into immunodeficient mice. In addition to the kidney reconstruction for use in transplantation, it has been demonstrated that cell therapy using hiPSC-derived NPCs ameliorates acute kidney injury (AKI) in mice. Disease modeling and drug discovery research using disease-specific hiPSCs has also been vigorously conducted for intractable kidney disorders, such as autosomal dominant polycystic kidney disease (ADPKD). In an attempt to address the complications associated with kidney diseases, hiPSC-derived erythropoietin (EPO)-producing cells were successfully generated to discover drugs and develop cell therapy for renal anemia. This review summarizes the current status and future perspectives of developmental biology of kidney and iPSC technology-based regenerative medicine for kidney diseases.


Author(s):  
G. Amato ◽  
T. Saleh ◽  
G. Carpino ◽  
E. Gaudio ◽  
D. Alvaro ◽  
...  

Abstract Purpose of Review To describe experimental liver injury models used in regenerative medicine, cell therapy strategies to repopulate damaged livers and the efficacy of liver bioengineering. Recent Findings Several animal models have been developed to study different liver conditions. Multiple strategies and modified protocols of cell delivery have been also reported. Furthermore, using bioengineered liver scaffolds has shown promising results that could help in generating a highly functional cell delivery system and/or a whole transplantable liver. Summary To optimize the most effective strategies for liver cell therapy, further studies are required to compare among the performed strategies in the literature and/or innovate a novel modifying technique to overcome the potential limitations. Coating of cells with polymers, decellularized scaffolds, or microbeads could be the most appropriate solution to improve cellular efficacy. Besides, overcoming the problems of liver bioengineering may offer a radical treatment for end-stage liver diseases.


2021 ◽  
Author(s):  
Lianxu Cui ◽  
Yasmeen Saeed ◽  
Haomin Li ◽  
Jingli Yang

Traumatic brain injury (TBI) is a serious health concern, yet there is a lack of standardized treatment to combat its long-lasting effects. The objective of the present study was to provide an overview of the limitation of conventional stem cell therapy in the treatment of TBI and to discuss the application of novel acellular therapies and their advanced strategies to enhance the efficacy of stem cells derived therapies in the light of published study data. Moreover, we also discussed the factor to optimize the therapeutic efficiency of stem cell-derived acellular therapy by overcoming the challenges for its clinical translation. Hence, we concluded that acellular therapy possesses the potential to bring a breakthrough in the field of regenerative medicine to treat TBI.


2014 ◽  
Vol 34 (suppl_1) ◽  
Author(s):  
Michael P Murphy ◽  

Background: Abdominal aortic aneurysm (AAA) is the 13 th leading cause of death in the United States. The only options for treatment at present for AAA are open surgical and endovascular repair, both of which are associated with significant morbidity, mortality, and expense.Thus AAA represents an unmet medical need. AAA pathogenesis is a multifactorial inflammatory process characterized by activation of T-cells,macrophages and neutrophils resulting in degradation of the aortic wall. Mesenchymal stromal cells (MSCs) suppress T-cell and macrophage activation, inhibit matrix metalloproteinases and have been shown to decrease aneurysm expansion in murine models. Methods: The STOP-AAA trial, from the NHLBI funded Cardiovascular Cell Therapy Research Network, is a randomized, double-blind, placebo-controlled trial evaluating the safety and efficacy of autologous bone marrow derived MSCs in suppressing expansion of small AAA (35-50mm).Forty patients will be randomized in a 1:1 fashion to receive systemic administration of placebo or 3 doses of 2x10 6 MSC/kg. at baseline, 24, and 52 weeks. The primary endpoint will be change in AAA diameter at 18 months as measured by a single blinded observer using contrast enhanced helical computed tomographic angiography (CTA).The secondary endpoints include time to elective repair, incidence of AAA related deaths and rupture,change in aortic mural inflammation at 18 months as quantified by F18-fluorodeoxyglucose (FDG) uptake with integrated positron emission tomography and computed tomography (PET/CT), changes in circulating mRNA, microRNA, and inflammatory cell profiles, changes in serum cytokine levels, and major adverse cardiac events. Conclusion: The STOP-AAA will be the first in man study to assess the efficacy of autologous bone marrow derived MSCs to suppress AAA expansion. Furthermore the data collected from this novel trial will provide unique mechanistic insights in the immunomodulatory properties of this stem cell population.


Author(s):  
Javad Verdi ◽  
Mahdi Shadnoush ◽  
Ghasem Janbabai ◽  
Alireza Shoae-Hassani ◽  
Seyed Abdolreza Mortazavi-Tabatabei ◽  
...  

2019 ◽  
Vol 20 (6) ◽  
pp. 1420 ◽  
Author(s):  
Bernhard Wernly ◽  
Moritz Mirna ◽  
Richard Rezar ◽  
Christine Prodinger ◽  
Christian Jung ◽  
...  

Although reperfusion therapy has improved outcomes, acute myocardial infarction (AMI) is still associated with both significant mortality and morbidity. Once irreversible myocardial cell death due to ischemia and reperfusion sets in, scarring leads to reduction in left ventricular function and subsequent heart failure. Regenerative cardiovascular medicine experienced a boost in the early 2000s when regenerative effects of bone marrow stem cells in a murine model of AMI were described. Translation from an animal model to stem cell application in a clinical setting was rapid and the first large trials in humans suffering from AMI were conducted. However, high initial hopes were early shattered by inconsistent results of randomized clinical trials in patients suffering from AMI treated with stem cells. Hence, we provide an overview of both basic science and clinical trials carried out in regenerative cardiovascular therapies. Possible pitfalls in specific cell processing techniques and trial design are discussed as these factors influence both basic science and clinical outcomes. We address possible solutions. Alternative mechanisms and explanations for effects seen in both basic science and some clinical trials are discussed here, with special emphasis on paracrine mechanisms via growth factors, exosomes, and microRNAs. Based on these findings, we propose an outlook in which stem cell therapy, or therapeutic effects associated with stem cell therapy, such as paracrine mechanisms, might play an important role in the future. Optimizing stem cell processing and a better understanding of paracrine signaling as well as its effect on cardioprotection and remodeling after AMI might improve not only AMI research, but also our patients’ outcomes.


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