alexa Evolution Of The Bladder Cancer Genome From Field Effects
ISSN: 2161-0681

Journal of Clinical & Experimental Pathology
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3rd International Conference and Exhibition on Pathology
April 14-15, 2014 Hilton San Antonio Airport, TX, USA

Bogdan Czerniak
KeyNote: J Clin Exp Pathol
DOI: 10.4172/2161-0681.S1.011
Abstract
We developed a strategy that combines histologic and genetic mapping that permits interrogation of the chronology of genetic changes associated with cancer development on a whole-organ scale. By using this approach, we analyzed the sequence of genetic alterations contiguous to the tumor suppressor RB1 and identified a set of alternative target genes that we term ?forerunner? (FR) genes whose silencing was associated with development of clonal plaque-like mucosal field effects initiating bladder carcinogenesis. Expression and methylation studies identified five candidate FR genes ( ITM2B, LPAR6, MLNR, CAB39L, and ARL11 ). In vitro mechanistic studies demonstrated that three of these genes ( ITM2B, LPAR6 and ARL11 ) control cell survival and proliferation consistent with their loss of function being contributory to tumorigenesis. Whole genome analyses of the field effects revealed a sequential accumulation of alterations in RHO/RAC/Cdc42 pathways that control invasion and cell motility. These studies identify FR genetic alterations as one of the earliest events in carcinogenesis and provide comprehensive description of field cancerization. The results have important implications for the development of novel detection markers and chemoprevention therapeutic strategies.
Biography
Bogdan Czerniak, MD, Ph.D. is a Professor in the Department of Pathology at UT MD Anderson Cancer Center. His laboratory is credited with the development of a mapping strategy which has provided unique information on the events associated with the development of field effects initiating carcinogenesis. Dr. Czerniak has published over 160 articles in major journals such as Nature, Cancer, Cancer Cell, JNCI, Cancer Research and Plos One.
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