Competitive endogenous (ce)RNAs cross-regulate each other through sequestration of shared microRNAs and form complex regulatory networks based on their microRNA signature. However, the molecular requirements for ceRNA cross-regulation and the extent of ceRNA networks remain unknown. Here, we present a mathematical mass-action model to determine the optimal conditions for ceRNA activity in silico. This model was validated using phosphatase and tensin homolog (PTEN) and its ceRNA VAMP (vesicle-associated membrane protein)-associated protein A (VAPA) as paradigmatic examples. A computational assessment of the complexity of ceRNA networks revealed that transcription factor and ceRNA networks are intimately intertwined. Notably, we found that ceRNA networks are responsive to transcription factor up-regulation or their aberrant expression in cancer. Thus, given optimal molecular conditions, alterations of one ceRNA can have striking effects on integrated ceRNA and transcriptional networks.
Integrated transcriptional and competitive endogenous RNA networks are cross-regulated in permissive molecular environments / Ala U.; Karreth F.A.; Bosia C.; Pagnani A.; Taulli R.; Léopold V.; Tay Y.; Provero P.; Zecchina R.; Pandolfi P.P.. - In: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. - ISSN 0027-8424. - 110:18(2013), pp. 7154-7159. [10.1073/pnas.1222509110]
|Titolo:||Integrated transcriptional and competitive endogenous RNA networks are cross-regulated in permissive molecular environments|
|Data di pubblicazione:||2013|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1073/pnas.1222509110|
|Appare nelle tipologie:||1.1 Articolo in rivista|