scholarly journals Bioprocessing of Human Mesenchymal Stem Cells: From Planar Culture to Microcarrier-Based Bioreactors

2021 ◽  
Vol 8 (7) ◽  
pp. 96
Author(s):  
Ang-Chen Tsai ◽  
Christina A. Pacak
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Dissolved Oxygen ◽  
Human Mesenchymal Stem Cells ◽  
Cell Counting ◽  
Feeding Strategies ◽  
Closed Systems ◽  
Seed Train ◽  
Key Steps

Human mesenchymal stem cells (hMSCs) have demonstrated great potential to be used as therapies for many types of diseases. Due to their immunoprivileged status, allogeneic hMSCs therapies are particularly attractive options and methodologies to improve their scaling and manufacturing are needed. Microcarrier-based bioreactor systems provide higher volumetric hMSC production in automated closed systems than conventional planar cultures. However, more sophisticated bioprocesses are necessary to successfully convert from planar culture to microcarriers. This article summarizes key steps involved in the planar culture to microcarrier hMSC manufacturing scheme, from seed train, inoculation, expansion and harvest. Important bioreactor parameters, such as temperature, pH, dissolved oxygen (DO), mixing, feeding strategies and cell counting techniques, are also discussed.

scholarly journals Human Mesenchymal Stem Cells Derived Exosomes Inhibit the Growth of Acute Myeloid Leukemia Cells via Regulating miR-23b-5p/TRIM14 Pathway

2021 ◽  
Author(s):  
hui cheng ◽  
Jie Ding ◽  
Gusheng Tang ◽  
Aijie Huang ◽  
Lei Gao ◽  
...  
Keyword(s):  
Stem Cells ◽  
Acute Myeloid Leukemia ◽  
Mesenchymal Stem Cells ◽  
Myeloid Leukemia ◽  
Human Mesenchymal Stem Cells ◽  
Human Mesenchymal Stem Cell ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Akt Pathway ◽  
Acute Myeloid

Abstract Background: Acute myeloid leukemia (AML) is a malignancy commonly seen in adults. Previous studies indicated that TRIM14 played a tumorigenic role in various types of cancer and miR-23b-5p was down-regulated in human mesenchymal stem cell-derived exosomes (HMSC-exos) of AML patients. However, their roles in AML remains unclear. Our study aims to investigate the role of TRIM14 and miR-23b-5p in the pathogenesis of AML.Materials and methods: The blood specimen was collected from AML patients and healthy donators. Exosomes were extracted from the culture medium of human mesenchymal stem cells under ultracentrifugation. Then exosomes were co-cultured with AML cells to determine the effect of their contents. The cell proliferation was detected by cell counting kit-8 assay, whereas the cell apoptosis was detected by flow cytometry. The expression of miR-23b-5p and TRIM14 was silenced or overexpressed to explore their biological functions in AML. Luciferase reporter assay was conducted to validate the interaction between miR-23b-5p and TRIM14. Gene expression was determined by quantitative real-time PCR and immunoblots.Results: TRIM14 was significantly increased in AML patients and cell lines. The inhibition of TRIM14 significantly reduced the proliferation and induced the apoptosis of AML cells via activating PI3K/AKT pathway, whereas its overexpression exhibited reversed effects. HMSC-exos could suppress the proliferation of AML cells through the delivery of miR-23b-5p. Moreover, miR-23b-5p inhibited the transcription of TRIM14 by binding on its 3’UTR region. Overexpression of TRIM14 exhibited reversed effect against the function of miR-23b-5p mimic.Conclusion: TRIM14 could promote the proliferation of AML cells via activating PI3K/AKT pathway, which was reversed by HMSC-exos through delivering miR-23b-5p. These findings indicated that miR-23b-5p and TRIM14 could be applied as potential targets for the treatment of AML.

scholarly journals Human mesenchymal stem cells derived exosomes inhibit the growth of acute myeloid leukemia cells via regulating miR-23b-5p/TRIM14 pathway

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
Hui Cheng ◽  
Jie Ding ◽  
Gusheng Tang ◽  
Aijie Huang ◽  
Lei Gao ◽  
...  
Keyword(s):  
Stem Cells ◽  
Acute Myeloid Leukemia ◽  
Mesenchymal Stem Cells ◽  
Myeloid Leukemia ◽  
De Novo ◽  
Human Mesenchymal Stem Cells ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Akt Pathway ◽  
Acute Myeloid

Abstract Background Acute myeloid leukemia (AML) is a malignancy commonly seen in adults. Previous studies indicated that TRIM14 played a tumorigenic role in various types of cancer and miR-23b-5p was down-regulated in human mesenchymal stem cell-derived exosomes (HMSC-exos) of AML patients. However, their roles in AML remains unclear. Our study aims to investigate the role of TRIM14 and miR-23b-5p in the pathogenesis of AML. Materials and methods The blood specimen was collected from de novo AML patients and healthy donators. Exosomes were extracted from the culture medium of human mesenchymal stem cells under ultracentrifugation. Then exosomes were co-cultured with AML cells to determine the effect of their contents. The cell proliferation was detected by cell counting kit-8 assay, whereas the cell apoptosis was detected by flow cytometry. The expression of miR-23b-5p and TRIM14 was silenced or overexpressed to explore their biological functions in AML. Luciferase reporter assay was conducted to validate the interaction between miR-23b-5p and TRIM14. Gene expression was determined by quantitative real-time PCR and immunoblots. Results TRIM14 was significantly increased in AML patients and cell lines. The inhibition of TRIM14 significantly reduced the proliferation and induced the apoptosis of AML cells via activating PI3K/AKT pathway, whereas its overexpression exhibited reversed effects. HMSC-exos could suppress the proliferation of AML cells through the delivery of miR-23b-5p. Moreover, miR-23b-5p inhibited the transcription of TRIM14 by binding on its 3’UTR region. Overexpression of TRIM14 exhibited reversed effect against the function of miR-23b-5p mimic. Conclusion TRIM14 could promote the proliferation of AML cells via activating PI3K/AKT pathway, which was reversed by HMSC-exos through delivering miR-23b-5p. These findings indicated that miR-23b-5p and TRIM14 could be applied as potential targets for the treatment of AML.

Proliferation and multi-differentiation potentials of human mesenchymal stem cells on thermoresponsive PDMS surfaces grafted with PNIPAAm

2010 ◽  
Vol 30 (6) ◽  
pp. 455-455 ◽  
Author(s):  
Dongyan Shi ◽  
Dan Ma ◽  
Feiqing Dong ◽  
Chen Zong ◽  
Liyue Liu ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Human Mesenchymal Stem Cells

The Effect of Link N on the Differentiation of Human Mesenchymal Stem Cells

2012 ◽  
Vol 2 (1_suppl) ◽  
pp. s-0032-1320001-s-0032-1320001
Author(s):  
F. Mwale ◽  
H. T. Wang ◽  
L. Haglund ◽  
P. J. Roughley ◽  
J. Antoniou
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Human Mesenchymal Stem Cells

Generation of human mesenchymal stem cells lacking diabetoporosity-associated miRNAs using CRISPR/Cas9

2020 ◽  
Author(s):  
I Foessl ◽  
A Groselj-Strele ◽  
JC Piswanger-Sölkner ◽  
H Dobnig ◽  
A Fahrleitner-Pammer ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Human Mesenchymal Stem Cells
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