By using solutions at high cell concentrations, we reduced cell mobility and maximized rapid identification of cells for imaging purposes; however, this also entailed the disadvantage of cell agglomeration, which of course reduced our chances of imaging one single flat cell at a time.
We also found that expansion of mixed populations often reduces the percentage of expressing cells (not shown), possibly reflecting expression from non-integrated provirus, transgene silencing or a growth disadvantage of cells with the H2B fusion proteins.
This tissue dependance has been suggested to result from a replicative disadvantage of cells harboring a high mutant load, thus promoting "mutation epuration" from fast regenerating tissues.
We wanted to determine if the loss of the DNA and H3K9 methylation signal after 5 days could be caused by a selective growth disadvantage of cells after VEGF-A silencing.
Again, we used the ΔNGFR surface marker to distinguish the transduced population from the untransduced in order to take into account the growth disadvantage of cells expressing p53-activating peptides.
By using primary cultured neurons in a cell-based assay, we avoided the disadvantages of immortalized cell lines and made use of the fact that dissociated mutant neurons can reveal cellular phenotypes with a magnitude far greater than that in the intact brain (Kraft et al., 2006; Liu et al., 2007; Chen and Herrup, 2008; Sawallisch et al., 2009).
The relative advantages and disadvantages of each cell line must be taken into account when choosing a model cell line for individual experiments.
It meant that the cell proliferation would be much improved by increasing the hydrophilicity of the three-dimensional scaffolds, which even outweighed the disadvantages of the cell attachment efficiency reduction with the incorporation of PEG.
The improved understanding of tissue resident adult stem cells, such as BMSCs, ADSCs and TSPCs, has been very helpful and a large number of studies have clarified the advantages and disadvantages of these cell types.
The major disadvantages of mammalian cell culture systems are their relatively low production levels and high cost [ 7].
