b) Graph showing significant downregulation of CD44
in Bleomycin treated siTRF2 silenced HCT116 cells as compared to Bleomycin treated scrambled transfected cells (p < 0.05).
Treatment with plerixafor prevents pulmonary fibrosis
in bleomycin - induced murine pulmonary fibrosis.
Not exact matches
In his book It «sNot About the Bike, Armstrong recalls how, on that grim morning, the oncologistoutlined a treatment protocol involving the drug
bleomycin, which would sodamage his lungs that he would not be able to race again.
In mice given
bleomycin, the researchers found that the levels of CHI3L1 declined at first and then surged.
d) Graph showing higher frequency of γH2Ax foci / nuclei at 40 and 80 μM dose of
Bleomycin post silencing
in siTRF2 silenced cells compared to Scrambled transfected HCT - 116 cells (p < 0.05).
N - acetylcysteine amide, a thiol antioxidant, prevents
bleomycin - induced toxicity
in human alveolar basal epithelial cells (A549).
d) Immunocytochemistry analysis showing reduced CD44 expression
in siTRF2 silenced HCT116 post treatment with
Bleomycin sulphate when compared to scrambled transfected HCT116 post treatment with
Bleomycin.
Mean γH2Ax foci / nuclei was observed to significantly increase (p < 0.05) with increasing concentrations of
Bleomycin (20, 40, 60, 80 μM)
in parental HCT - 116 (Fig 1e and 1f).
Unpaired student's t - test was also used to compare gene expression variation
in siTRF2 silenced versus non silenced scrambled siRNA HCT116 cells
in the presence of
bleomycin sulfate.
c) Graph showing dose dependant (20, 40, 60, 80 µM) increase
in CD44 enriched cells post treatment with
Bleomycin sulphate (p < 0.001).
Furthermore, on treatment with 80μM
bleomycin, a significant (p < 0.05) increase
in expression of stemness genes like CD44, Oct 4 and a significant downregulation of CD24 gene (p < 0.05) was observed
in clonospheric HCT116 when compared to Parental HCT116 (Fig. 3a and 3b).
d) Graph showing quantitative average olive tail moment
in parental and clonospheres post DNA damage with 40 and 80 μM of
Bleomycin.
To analyse the extent of DNA damage response (DDR)
in resistant phenotype, we treated spheroidal clonospheres with specific concentrations of
Bleomycin.
With increasing dosage of
Bleomycin, significantly low foci per nuclei (p < 0.05) was observed
in clonospheres as compared to that
in parental HCT - 116 (Fig 2a and 2b).
We report the presence of cancer stem cell like Side Population and their survival and enrichment post treatment with
bleomycin in HCT116 cell line.
Comparative gene expression analysis revealed a significant overexpression of TRF2, β - catenin and hTERT genes (p < 0.01)
in clonospheres at high
Bleomycin concentration (80μM)(Fig 2f).
Chen J, Ghorai MK, Kenney G, Stubbe J. Mechanistic studies on
bleomycin - mediated DNA damage: multiple binding modes can result
in double - stranded DNA cleavage.
Mesenchymal stem cell engraftment
in lung is enhanced
in response to
bleomycin exposure and ameliorates its fibrotic effects.
Immunocytochemistry also confirmed reduced expression of CD44
in siTRF2 silenced HCT116 cells as compared to Scrambled siRNA when treated with increasing concentration of
Bleomycin (Fig 4d).
To further characterize the stem cell like properties of SP cells we treated HCT116 with increasing concentrations of
Bleomycin and observed variation
in CD44 percentage.
A significant increase
in stem cells
in terms of CD44 positive population was observed with higher
Bleomycin concentration (p < 0.001)(Fig 1c and 1d).
Elevated TRF2 expression
in clonospheres at high concentration of
Bleomycin may contribute to increased expression of stem cell factors.
DNA damage,
in terms of average olive tail moment, was observed to increase with increasing concentration of
Bleomycin in Parental HCT 116 cells.
Knockout of endothelin type B receptor signaling attenuates
bleomycin - induced skin sclerosis
in mice.