Long-term continuous monitoring of dissolved oxygen in cell culture medium for perfused bioreactors using optical oxygen sensors

2004 ◽  
Vol 86 (4) ◽  
pp. 425-433 ◽  
Author(s):  
Frank G. Gao ◽  
Antony S. Jeevarajan ◽  
Melody M. Anderson
Keyword(s):  
Cell Culture ◽  
Dissolved Oxygen ◽  
Continuous Monitoring ◽  
Culture Medium ◽  
Oxygen Sensors ◽  
Cell Culture Medium

scholarly journals Long-Term Culture of Giardia lamblia in Cell Culture Medium Requires Intimate Association with Viable Mammalian Cells

2019 ◽  
Vol 87 (11) ◽  
Author(s):  
Theodore E. Nash
Keyword(s):  
Cell Culture ◽  
Cell Line ◽  
Cell Lines ◽  
Giardia Lamblia ◽  
Mammalian Cells ◽  
Culture Medium ◽  
Host Cells ◽  
Cell Culture Medium ◽  
Heterologous Cell

ABSTRACT Giardia lamblia is usually cultured axenically in TYI-S-33, a complex medium which does not permit survival and growth of mammalian cells. Likewise, medium commonly used to maintain and grow mammalian cells does not support healthy trophozoite survival for more than a few hours. The inability to coculture trophozoites and epithelial cells under optimal conditions limits studies of their interactions as well as interpretation of results. Trophozoites of the WB isolate but not the GS isolate were repeatedly adapted to grow stably in long-term cocultures with Caco2, Cos7, and mouse tumor rectal (RIT) cell lines using hybridoma-screened Dulbecco’s modified Eagle’s medium and 10% fetal calf serum. Giardia did not grow in spent cell culture medium or when separated by a permeable membrane using transwell methodology. Giardia chronically cocultured with specific cell lines became adapted (conditioned). These Giardia cocultures grew better than nonconditioned trophozoites, and the cell lines differed in their ability to support trophozoite growth in the order of RIT > Cos7 > Caco2. Trophozoites conditioned on one cell line and then grown in the presence of a heterologous cell line changed their growth rate to that seen in conditioned Giardia from the heterologous cell line. Trophozoite survival required intimate contact with cells, suggesting that trophozoites obtain an essential nutrient or growth factor from mammalian cells. This may explain why Giardia trophozoites adhere to the small intestinal epithelium during human and animal infections. This coculture system will be useful to understand the complex interactions between the host cells and parasite.

3-iodothyronamine (T1AM) is taken up and rapidly metabolized in cell culture medium only at low concentration

2020 ◽  
Author(s):  
Federica Saponaro ◽  
Marco Borsò ◽  
Sara Verlotta ◽  
Lavinia Bandini ◽  
Alessandro Saba ◽  
...  
Keyword(s):  
Cell Culture ◽  
Culture Medium ◽  
Cell Culture Medium ◽  
Low Concentration

Effect of Atmospheric-Pressure Helium Plasma Jet on Cell Culture Medium

2013 ◽  
Vol 133 (5) ◽  
pp. 278-285
Author(s):  
Norimitsu Takamura ◽  
Douyan Wang ◽  
Takao Satoh ◽  
Takao Namihira ◽  
Hisato Saitoh ◽  
...  
Keyword(s):  
Cell Culture ◽  
Atmospheric Pressure ◽  
Culture Medium ◽  
Plasma Jet ◽  
Helium Plasma ◽  
Cell Culture Medium

scholarly journals Defined MSC exosome with high yield and purity to improve regenerative activity

2021 ◽  
Vol 12 ◽  
pp. 204173142110086
Author(s):  
Jun Yong Kim ◽  
Won-Kyu Rhim ◽  
Yong-In Yoo ◽  
Da-Seul Kim ◽  
Kyoung-Won Ko ◽  
...  
Keyword(s):  
Cell Culture ◽  
Culture Medium ◽  
Density Lipoprotein ◽  
High Yield ◽  
Human Umbilical Cord ◽  
Cell Culture Medium ◽  
Human Coronary Artery ◽  
Isolation Methods ◽  
Regenerative Activity ◽  
Yield And Purity

Exosomes derived from mesenchymal stem cells (MSCs) have been studied as vital components of regenerative medicine. Typically, various isolation methods of exosomes from cell culture medium have been developed to increase the isolation yield of exosomes. Moreover, the exosome-depletion process of serum has been considered to result in clinically active and highly purified exosomes from the cell culture medium. Our aim was to compare isolation methods, ultracentrifuge (UC)-based conventional method, and tangential flow filtration (TFF) system-based method for separation with high yield, and the bioactivity of the exosome according to the purity of MSC-derived exosome was determined by the ratio of Fetal bovine serum (FBS)-derived exosome to MSC-derived exosome depending on exosome depletion processes of FBS. The TFF-based isolation yield of exosome derived from human umbilical cord MSC (UCMSC) increased two orders (92.5 times) compared to UC-based isolation method. Moreover, by optimizing the process of depleting FBS-derived exosome, the purity of UCMSC-derived exosome, evaluated using the expression level of MSC exosome surface marker (CD73), was about 15.6 times enhanced and the concentration of low-density lipoprotein-cholesterol (LDL-c), known as impurities resulting from FBS, proved to be negligibly detected. The wound healing and angiogenic effects of highly purified UCMSC-derived exosomes were improved about 23.1% and 71.4%, respectively, with human coronary artery endothelial cells (HCAEC). It suggests that the defined MSC exosome with high yield and purity could increase regenerative activity.

Production of Recombinant Proteins in Chinese Hamster Ovary Cells Using A Protein-Free Cell Culture Medium

1995 ◽  
Vol 13 (4) ◽  
pp. 389-392 ◽  
Author(s):  
Michael Zang ◽  
Helmut Trautmann ◽  
Christine Gandor ◽  
Ferruccio Messi ◽  
Fred Asselbergs ◽  
...  
Keyword(s):  
Cell Culture ◽  
Recombinant Proteins ◽  
Chinese Hamster Ovary ◽  
Culture Medium ◽  
Chinese Hamster Ovary Cells ◽  
Chinese Hamster ◽  
Free Cell ◽  
Cell Culture Medium ◽  
Ovary Cells

Fluoride-containing bioactive glasses and Bioglass® 45S5 form apatite in low pH cell culture medium

2014 ◽  
Vol 119 ◽  
pp. 96-99 ◽  
Author(s):  
Furqan A. Shah ◽  
Delia S. Brauer ◽  
Nikita Desai ◽  
Robert G. Hill ◽  
Karin A. Hing
Keyword(s):  
Cell Culture ◽  
Culture Medium ◽  
Low Ph ◽  
Cell Culture Medium ◽  
Bioactive Glasses
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