Immunogenicity of human umbilical cord mesenchymal stem cells during ex vivo expansion

2016 ◽  
Vol 50 (2) ◽  
Author(s):  
Mingli Ji ◽  
LiPing Guan
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Major Histocompatibility Complex ◽  
Ex Vivo ◽  
Human Umbilical Cord ◽  
Surface Markers ◽  
Histocompatibility Complex ◽  
Major Histocompatibility Complex Expression ◽  
Complex Expression

The aim of this study was to investigate the immunogenicity of human umbilical cord mesenchymal stem cells (hUCMSCs) cultured <italic>in vitro</italic> by detecting changes in major histocompatibility complex expression. Major histocompatibility complex expression was detected by RT–PCR and flow cytometry. Morphologically, hUCMSCs exhibited no visible changes before the 5 st passage of the <italic>in vitro</italic> culture. In addition, At the molecular level, the cells continued expressing the specific positive surface markers, CD105, CD73 and CD90, and did not express the negative surface markers, CD14, CD34 or CD45, during culture <italic>ex vivo</italic>. Furthermore, the hUCMSCs exhibited low immunogenicity, which was maintained when cultured for five passages. Taken as a whole, these results suggested that hUCMSCs cultured in vitro may be safely for transplanted because of low immunogenicity before the fifth passage.

scholarly journals Microvesicles Derived from Human Umbilical Cord Mesenchymal Stem Cells Stimulated by Hypoxia Promote Angiogenesis Both In Vitro and In Vivo

2012 ◽  
Vol 21 (18) ◽  
pp. 3289-3297 ◽  
Author(s):  
Hong-Chao Zhang ◽  
Xin-Bin Liu ◽  
Shu Huang ◽  
Xiao-Yun Bi ◽  
Heng-Xiang Wang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Umbilical Cord ◽  
Human Umbilical Cord

Assessment of Long-Term in vitro Multiplied Human Wharton’s Jelly-Derived Mesenchymal Stem Cells prior to Their Use in Clinical Administration

2021 ◽  
pp. 1-11
Author(s):  
Urvi Panwar ◽  
Kanchan Mishra ◽  
Parizad Patel ◽  
Sumit Bharadva ◽  
Salil Vaniawala ◽  
...  
Keyword(s):  
Telomere Length ◽  
Replicative Senescence ◽  
Ex Vivo ◽  
Wharton’S Jelly ◽  
Cellular Aging ◽  
Human Umbilical Cord ◽  
Surface Markers ◽  
Wharton's Jelly ◽  
Ex Vivo Culture

The quantity of mesenchymal stem/stromal cells (MSCs) required for a particular therapy demands their subsequent expansion through ex vivo culture. During in vitro multiplication, they undergo replicative senescence which may alter their genetic stability. Therefore, this study was aimed to analyze cellular, molecular, and chromosomal alterations in Wharton’s jelly-derived MSCs (WJ-MSCs) during their in vitro sequential passages, where WJ-MSCs were sequentially passaged up to P14 and cells were evaluated at an interval of P2, P6, P10, and P14. They were examined for their morphology, tumorigenicity, surface markers, stemness markers, DNA damage, chromosomal aberration, and telomere length. We have processed five full-term delivered human umbilical cord samples to obtain WJ-MSCs. Morphological appearance observed at initial stages was small fine spindle-shaped WJ-MSCs which were transformed to flat, long, and broader cells in later passages. The cell proliferation rate was gradually decreased after the 10th passage. WJ-MSCs have expressed stemness markers OCT-4 and NANOG, while they showed high expression of positive surface markers CD90 and CD105 and lower expression of CD34 and CD45. They were non-tumorigenic with slow cellular aging during subsequent passages. There was no chromosomal abnormality up to the 14th passage, while increase in comet score and decrease in telomere length were observed in later passages. Hence, our study suggests that early and middle passaged (less than P10) WJ-MSCs are good candidates for clinical administration for treatment.

scholarly journals Exploring the Role of Mesenchymal Stem Cells During Normothermic Organ Perfusion: A New Paradigm to Enhance Outcome Following Allograft Transplantation

2018 ◽  
Vol 5 (1) ◽  
pp. 47-52
Author(s):  
Mohamed Morsy ◽  
Mohammad Ayaz Hossain ◽  
Atul Bagul
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Organ Transplantation ◽  
Ex Vivo ◽  
Solid Organ Transplantation ◽  
Short Review ◽  
Solid Organ ◽  
New Paradigm ◽  
Liver And Kidney

Background: Normothermic Machine Perfusion (NMP) has been established in the field of solid organ transplantation for both liver and kidney allografts. The ability to perfuse organs at body temperature enables viability assessment as well as optimisation prior to implantation. Discussion: A recent in vitro report of the use of Mesenchymal Stem Cells (MSCs) in the use of a normothermic lung perfusion circuit has raised the possibility of their use in solid organ transplantation. The aim of this short review is to outline the potential uses of bone marrow derived MSCs for their use in renal allograft ex vivo NMP. An overview is provided of current literature of NMP as well as theorised uses for MSCs.

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