prikaz prve stranice dokumenta Utjecaj izoformi gena p73 na metiliranja DNA u stanicama raka
  Download
PDF 1.41 MB
doctoral thesis
Utjecaj izoformi gena p73 na metiliranja DNA u stanicama raka
Zagreb: University of Zagreb, Faculty of Science, 2012. urn:nbn:hr:217:650490
Tučkar, Neven
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

Cite this document

Tučkar, N. (2012). Utjecaj izoformi gena p73 na metiliranja DNA u stanicama raka (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:650490

Tučkar, Neven. "Utjecaj izoformi gena p73 na metiliranja DNA u stanicama raka." Doctoral thesis, University of Zagreb, Faculty of Science, 2012. https://urn.nsk.hr/urn:nbn:hr:217:650490

Tučkar, Neven. "Utjecaj izoformi gena p73 na metiliranja DNA u stanicama raka." Doctoral thesis, University of Zagreb, Faculty of Science, 2012. https://urn.nsk.hr/urn:nbn:hr:217:650490

Tučkar, N. (2012). 'Utjecaj izoformi gena p73 na metiliranja DNA u stanicama raka', Doctoral thesis, University of Zagreb, Faculty of Science, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:650490

Tučkar N. Utjecaj izoformi gena p73 na metiliranja DNA u stanicama raka [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Science; 2012 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:217:650490

N. Tučkar, "Utjecaj izoformi gena p73 na metiliranja DNA u stanicama raka", Doctoral thesis, University of Zagreb, Faculty of Science, Zagreb, 2012. Available at: https://urn.nsk.hr/urn:nbn:hr:217:650490

Metadata
TitleUtjecaj izoformi gena p73 na metiliranja DNA u stanicama raka
Title (english)The role of p73 isoforms on DNA methylation in cancer cells
AuthorNeven Tučkar
MentorNeda Slade (mentor)
Committee memberKristian Vlahoviček (član povjerenstva)
Committee memberNeda Slade (član povjerenstva)
Committee memberDamir Eljuga (član povjerenstva)
MBZ: 87925
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2012, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Universal decimal classification
(UDC)		575 - General genetics. General cytogenetics
Abstract
Uloga gena p73 u tumorigenezi nije u potpunosti razjašnjena. Korištenjem promotora P1 nastaju izoforme sa cjelovitim transaktivacijskim područjem (TAp73), odnosno korištenjem promotora P2 izoforme bez te regije (ΔNp73). Najčešća promjena u tumorima je povećana ekspresija izoforme ΔNp73, koja djeluje kao transdominantni inhibitor TAp73 i p53. Metiliranost DNA je oblik reverzibilne epigenetičke regulacije, kojim se nakon replikacije dodaju metilne skupine na citozinske ostatke DNA, mijenjajući aktivnost staničnih gena. Hipermetiliranost otoka CpG u promotorskim regijama pojedinih gena inhibira transkripciju utištavajući gene. Koristeći inducibilni sustav tet-on ispitali smo utjecaj pojačane ekspresije TAp73α i ΔNp73α na globalnu metiliranost DNA, no nismo pronašli statistički značajnu promjenu metiliranosti uzoraka s aktiviranim izoformama p73 u odnosu na njihove kontrole. Rezultate smo usporedili s rezultatima genske ekspresije nakon aktivacije ΔNp73α i TAp73α iz literature. Za gene koji pokazuju pojačanu ekspresiju našli smo, premda statistički ne značajno, smanjenje metiliranosti promotorskih CpG otoka, što potvrđuje činjenicu da metiliranje može utjecati na regulaciju aktivnosti gena.
Abstract (english)
The role of p73 in tumorigenesis is not fully understood. Using P1 promoter transactivating (TAp73) isoforms are generated and P2 promoter the isoforms without this region (ΔNp73). The most common change in tumors is increased expression of ΔNp73, which acts as transdominant inhibitor of TAp73 and p53. DNA methylation is a form of epigenetic regulation, which adds methyl groups to cytosine residues, regulating gene activity. Hypermethylation of CpG islands in promoter regions inhibits transcription of genes silencing its expression. Using inducible tet-on system, we examined the impact of increased expression of TAp73α and ΔNp73α on global DNA methylation. However statistically significant change was not found upon induced expression of p73 isoforms. The results were compared with gene expression data obtained after induction of TAp73α or ΔNp73α from literature. For genes with increased expression we found, although not statistically significant, reduction of methylated CpG sites in promoter regions, which confirms the fact that methylation could affect the regulation of gene activity.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:650490
Study programmeTitle: Biology
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje prirodnih znanosti, polje biologija (doktor/doktorica znanosti, područje prirodnih znanosti, polje biologija)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2019-06-08
Terms of useLicence In copyright icon
Created on2017-06-08 10:22:24