In addition, microscopic observation of the cell cultures showed that a 72 h exposure to the higher BioEG concentration (0.2 g l-1) led to a considerable amount of cell death, since only few viable cells were present in the sample after incubation under such conditions.
With conventional assays, there is considerable amount of cell death even before pharmacological/molecular interventions are applied, masking the effect by interventions even if they induce further cell damage.
Regarding S1P, high concentrations of this lipid (10 µM) induced a considerable amount of cell death, which is in stark contrast with a previous report showing that 10 20 µM S1P prevents hESC apoptosis [28].
Only Ad5hTRAIL infected cells exhibited considerable amount of cell death following transfection.
However, later in culture they induced a considerable amount of cell death.
Cultures in early plateau phase (where a considerable amount of cell proliferation is balanced by cell loss) showed a reduced sensitivity to bleomycin when compared with cells in exponential growth.
We conclude that while TNF clearly induces apoptosis of sharpin-deficient keratinocytes in vivo that is responsible for skin inflammation in cpdm mice, in primary keratinocyte cultures TNF stimulation does not induce considerable amount of cell death in the absence of CHX to allow reliable quantification of the effect.
While a considerable amount of cell culture and animal-based research suggests that n-3 PUFA may modify BC risk and provide protection against mammary tumorigenesis [ 8, 46, 59, 80, 81], human cohort, case-control studies have failed to provide similar strong support, often finding null relationships between EPA and DHA consumption and BC risk [ 19, 82- 84].
Interestingly, many T192 cells exhibit a single TO (43.6%, Fig. 6) indicating that a considerable amount of daughter cells receive a single TO during the cell division process.
