Abstract：
:The difficulty to dissect a complex phenotype of established malignant cells to several critical transcriptional programs greatly impedes our understanding of the malignant transformation. The genetic elements required to transform some primary human cells to a tumorigenic state were described in several recent studies. We took the advantage of the global genomic profiling approach and tried to go one step further in the dissection of the transformation network. We sought to identify the genetic signatures and key target genes, which underlie the genetic alterations in p53, Ras, INK4A locus, and telomerase, introduced in a stepwise manner into primary human fibroblasts. Here, we show that these are the minimally required genetic alterations for sarcomagenesis in vivo. A genome-wide expression profiling identified distinct genetic signatures corresponding to the genetic alterations listed above. Most importantly, unique transformation hallmarks, such as differentiation block, aberrant mitotic progression, increased angiogenesis, and invasiveness, were identified and coupled with genetic signatures assigned for the genetic alterations in the p53, INK4A locus, and H-Ras, respectively. Furthermore, a transcriptional program that defines the cellular response to p53 inactivation was an excellent predictor of metastasis development and bad prognosis in breast cancer patients. Deciphering these transformation fingerprints, which are affected by the most common oncogenic mutations, provides considerable insight into regulatory circuits controlling malignant transformation and will hopefully open new avenues for rational therapeutic decisions.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Milyavsky M,Tabach Y,Shats I,Erez N,Cohen Y,Tang X,Kalis M,Kogan I,Buganim Y,Goldfinger N,Ginsberg D,Harris CC,Domany E,Rotter Vdoi
10.1158/0008-5472.CAN-04-3880subject
Has Abstractpub_date
2005-06-01 00:00:00pages
4530-43issue
11eissn
0008-5472issn
1538-7445pii
65/11/4530journal_volume
65pub_type
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