Glory Days

Author(s):  
Clara Pinto-Correia

What was it like to be a young woman in a laboratory that was cloning some of the first mammals? What were the motivations of the people in the laboratory? And why did people want to clone animals in the first place? How did the failure to clone healthy mammals lead to stem cell technology and the banking of umbilical cord stem cells? This first-person account looks at the very human side of cloning.

Author(s):  
Didem Kart ◽  
Betül Çelebi-Saltik

: Umbilical cord and cord blood are acceptable as attractive sources of mesenchymal and hematopoietic stem cells, since their collection is non-invasive, painless, and does not evoke the ethical concerns. Microorganism-stem cell interaction plays an important role in stem cell self-renewal, differentiation, secretion profile and death. In the literature, few researchers are examining the relationship between pathogenic and commensal bacteria with umbilical cord-derived Mesenchymal Stem Cells (MSCs). These relationships vary depending on the bacterial load and the presence of the immune cell in the environment. Several bacterial pathogens act in the regenerative capacity of MSCs by changing their phenotype, development and viability due to several stress factors that are created by a microorganism such as hypoxia, oxidative stress, etc. On the other hand, the anti-inflammatory and antibacterial effects of MSCs were shown and these phenomena increased when the number of bacteria was high but decreased in the presence of low amounts of bacteria. The antibacterial effects of MSCs increased in the early period of infection, while their effects were decreased in the late period with high inflammatory response and bacterial load. In this review, we discussed the microbial stresses on human umbilical cord stem cells.


2020 ◽  
Vol 21 (2) ◽  
pp. 1-8
Author(s):  
Afadhali Denis Russa

Stem cell technology and its application in regenerative medicine is the future gateway for the treatment of most non-communicable diseases (NCDs). As the burden of NCDs continues to rises globally, regenerating the cells, tissues and organs will be the mainstream treatment option. The world is prepared for this intriguing but promising avenue of biomedical technology and medicine but Africa is grossly lagging far behind. African governments, universities, research and health institutions need to take a leading role in empowering and mainstreaming stem cell research.  Moreover, for Africa, there is a huge potential for translating stem cell technology into clinical treatments due to the fact that there are limited treatment options for life-threatening forms of NCDs.  Some African countries have well-developed stem cell facilities and large-scale stem cell therapy centers. The use of adult stem cells in liver failure, diabetes and cardiac infarcts has shown success in some African countries. The present work reviews the status, potential and future prospects of stem cell technology and regenerative medicine in Tanzania with particular emphasis on the adult stem cells applicability into the immediate use inpatient care.  The paper also reviews the available cell identification systems and markers and moral and ethical aspects of stem cell science necessary in the translational treatment regimens. 


2013 ◽  
Vol 810 ◽  
pp. 41-76 ◽  
Author(s):  
Kakon Nag ◽  
Toshihiro Akaike

Chimeric proteins have been used for years for various purposes ranging from biomaterials to candidate drug molecules, and from bench to bulk. Regenerative medicine needs various kinds of proteins for providing essential factors for maintaining starting cells, like induced pluripotent stem cells (iPSC), and renewal, proliferation, targeted differentiation of these cells, and as extracellular matrix for the experimental cells. However, there are several challenges associated with making functional chimeric proteins for effective application as biomaterial in this field. Fc-chimeric protein technology could be an effective solution to overcome many of them. These tailored proteins are recently becoming superior choice of biomaterials in stem cell technology and regenerative medicine due to their specific advantageous biophysical and biochemical properties over other chimeric forms of same proteins. Recent advances in recombinant protein-related science and technology also expedited the popularity of this kind of engineered protein. Over the last decade our lab has been pioneering this field, and we and others have been successfully applied Fc-chimeric proteins to overcome many critical issues in stem cell technologies targeting regenerative medicine and tissue engineering. Fc-chimeric protein-based biomaterials, specifically, E-cad-Fc have been preferentially applied for coating of cell culture plates for establishing xenogeneic-agent free monolayer stem cell culture and their maintenance, enhanced directed differentiation of stem cells to specific lineages, and non-enzymatic on-site one-step purification of target cells. Here the technology, recent discoveries, and future direction related with the E-cad-Fc-chimeric protein in connection with regenerative medicine are described.


Author(s):  
Zeinab Shaker ◽  
Zohreh Shaker ◽  
Mohsen Barouni

Background: Skin and wound injuries are important health problems with great mortality rates. While there are different alternative therapies, there is no agreement on the best therapy for burn wounds and wound complications. Stem cell therapy has an optimistic prospect in many preclinical studies of burn wounds and diabetic wounds. Objectives: In this study, we performed a rapid review to evaluate the efficacy and safety of stem cell therapy in wound treatment. Methods: This rapid review of the evidence aimed to evaluate the potential effects of stem cells on wound healing to create a policy guide for policymakers in the health care system. We searched such databases as PubMed and Scopus on March 13, 2021 using keywords, including “stem cells and wound healing”, “safety”, and “efficacy”. The references of retrieved studies were also checked to ensure the capture of the literature. Studies evaluating the safety and efficacy of stem cells on wound healing published in Persian and English were included. Generally, we used the PICO (population, intervention, control, and outcomes) model for search strategy. Results: Out of a total of 92 retrieved papers, 22 studies were eligible for inclusion. The overall review showed that stem cell therapy improved wounds. Also, studies showed that using stem cell technology in a non-invasive way could be a good alternative. However, the limitations of this technology consisted of the need to improve cell delivery methods, cell sustainability, heterogeneity in the research of mesenchymal stem cells, and wound substrate. Further studies are needed to determine its safety and efficacy. Conclusions: Although the evidence on the safety and efficacy of using stem cells for wound healing was limited, studies showed that stem cell technology is a good alternative to traditional therapies. Future clinical studies should consider the differences in the studies to achieve maximum effectiveness.


Author(s):  
Nurul Wahidah Abdul Wahab ◽  
Rhanye Mac Guad ◽  
Vetriselvan Subramaniyan ◽  
Ismail M. Fareez ◽  
Ker Woon Choy ◽  
...  

: Stem cells can multiply into more cells with similar types in an undifferentiated form and differentiate into other types of cells. The great success and key essence of stem cell technology is the isolation of high-quality mesenchymal stem cells (MSCs) with high potency, either with multipotent or pluripotent property. In this line, stem cells from human exfoliated deciduous teeth (SHEDs) are highly proliferative stem cells from dental pulp and have multipoint differentiation capacity. These cells play a pivotal role in regenerative medicine, such as cell repair associated with neurodegenerative, hepatobiliary, and pancreatic diseases. In addition, stem cell therapy has been widely used to regulate immune response and repair of tissue lesions. This overview captured the differential biological characteristics, and the potential role of stem cell technology and paid special attention to human welfare SHEDs in eliminating the abovementioned diseases. This review provides further insights into stem cell technology by expanding the therapeutic potential of SHEDs in tissue engineering and cell organ repairs.


2007 ◽  
Vol 10 (3) ◽  
pp. E231-E234 ◽  
Author(s):  
Balram Airan ◽  
Sachin Talwar ◽  
Shiv Choudhary ◽  
Akshay Bisoi ◽  
Ujjwal Chowdhury ◽  
...  

2015 ◽  
Vol 37 (1se) ◽  
Author(s):  
Nguyen Van Hanh ◽  
Vi Dai Lam ◽  
Nguyen Huu Duc ◽  
Do Trung Kien ◽  
Nguyen Viet Linh

2020 ◽  
Vol 15 (3) ◽  
pp. 219-232
Author(s):  
Ifrah Anwar ◽  
Usman A. Ashfaq ◽  
Zeeshan Shokat

The liver is a vital organ for life and the only internal organ that is capable of natural regeneration. Although the liver has high regeneration capacity, excessive hepatocyte death can lead to liver failure. Various factors can lead to liver damage including drug abuse, some natural products, alcohol, hepatitis, and autoimmunity. Some models for studying liver injury are APAP-based model, Fas ligand (FasL), D-galactosamine/endotoxin (Gal/ET), Concanavalin A, and carbon tetrachloride-based models. The regeneration of the liver can be carried out using umbilical cord blood stem cells which have various advantages over other stem cell types used in liver transplantation. UCB-derived stem cells lack tumorigenicity, have karyotype stability and high immunomodulatory, low risk of graft versus host disease (GVHD), low risk of transmitting somatic mutations or viral infections, and low immunogenicity. They are readily available and their collection is safe and painless. This review focuses on recent development and modern trends in the use of umbilical cord stem cells for the regeneration of liver fibrosis.


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