The pooled-PCR approach was adopted using the primer pair to screen a genomic transformation-competent artificial chromosome (TAC) library derived from Z. latifolia.
Cells were harvested and used as the source for genomic DNA extraction, direct genome transformation or as the inoculum for fermentation experiments.
A number of bystander cell responses were reported including, but not limited to, increased yield of sister chromatid exchanges, mutations, micronucleus formation, stress response gene expression induction, terminal differentiation, apoptosis, genomic instability, transformation of cells in vitro and tumorigenesis in vivo.
With the aim of further understanding the DNA methylation dynamics over the Rb promoter, we performed sodium bisulfite genomic DNA transformation and sequencing of the core promoter at 130 and 170 days of continuous cell culture.
Genomic features of transformation such as loss of heterozygocity or chromosomal rearrangements cannot easily be reversed.
In the presence of oncogenic stress, Casp2 deficiency in mice results in enhanced cellular transformation, genomic instability and increased tumorigenesis.
These observations are in line with several other studies, which indicated that human MSC are relatively resistant to genomic aberrations and transformation in culture expansion [ 12- 17, 17, 30].
Densely ionizing Fe ions have been reported to be more potent inducers of genomic instability, cell transformation, and tumorigenesis than sparsely ionizing X-rays.
Aurora-A is implicated in p53 degradation via MDM2 (Katayama et al, 2004), which could further contribute to genomic instability and transformation by abrogating the ability of the cell to respond to DNA damage or other insults.
