Global patterns of changes in the gene expression associated with genesis of cancer
by Manyam, Ganiraju, Ph.D., GEORGE MASON UNIVERSITY, 2009, 217 pages; 3394593

Abstract:

Cancer arises from a stepwise accumulation of genetic changes through expansion of the malignant cell clones in the population of pre-malignant cells undergoing the Darwinian selection process. In other words, cancer is an outcome of continuous and random acquisition of the changes in the genomes of individual cells. These modifications gradually and progressively change the phenotype of the normal cell making it more malignant through a loss of an overall stability of genome. To gain the comprehension of the mechanisms underlying tumor development, a number of high-throughput expression studies have been performed. The objective of the current study is to use publicly available datasets in order to analyze the most general features of the malignant cell, thus, investigating molecular phenomena common for all tumor cells, with no regard to the characteristics related to tumor’s tissue of origin. Thus, we analyzed and compared the transcript diversity patterns in tumor and normal cells, studied an expression of the genes located adjacent to the telomeres and provided an evidence for the hypothesis that tumor state behaves as stable “attractor” state. An intermediate regulatory framework hypothesis implying a set of local ‘vantage points’ genes that control the transcription of all other genes in a semi-democratic fashion has been endorsed.

 
AdviserAncha Baranova
SchoolGEORGE MASON UNIVERSITY
SourceDAI/B 71-02, p. , Mar 2010
Source TypeDissertation
SubjectsMolecular biology; Bioinformatics; Oncology
Publication Number3394593
Adobe PDF Access the complete dissertation:
 

» Find an electronic copy at your library.
  Use the link below to access a full citation record of this graduate work:
  http://gateway.proquest.com/openurl%3furl_ver=Z39.88-2004%26res_dat=xri:pqdiss%26rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation%26rft_dat=xri:pqdiss:3394593
  If your library subscribes to the ProQuest Dissertations & Theses (PQDT) database, you may be entitled to a free electronic version of this graduate work. If not, you will have the option to purchase one, and access a 24 page preview for free (if available).

About ProQuest Dissertations & Theses
With over 2.3 million records, the ProQuest Dissertations & Theses (PQDT) database is the most comprehensive collection of dissertations and theses in the world. It is the database of record for graduate research.

The database includes citations of graduate works ranging from the first U.S. dissertation, accepted in 1861, to those accepted as recently as last semester. Of the 2.3 million graduate works included in the database, ProQuest offers more than 1.9 million in full text formats. Of those, over 860,000 are available in PDF format. More than 60,000 dissertations and theses are added to the database each year.

If you have questions, please feel free to visit the ProQuest Web site - http://www.proquest.com - or call ProQuest Hotline Customer Support at 1-800-521-3042.