p53 is a transcription factor that governs numerous stress response pathways within the ceil. Maintaining the right levels of p53 is crucial for ceil survival and proper cellular homeostasis, The tight regulation of p...p53 is a transcription factor that governs numerous stress response pathways within the ceil. Maintaining the right levels of p53 is crucial for ceil survival and proper cellular homeostasis, The tight regulation of p53 involves many cellular components, most notably its major negative regulators Mdm2 and Mdm4, which maintain p53 protein amount and activity in tight check, microRNAs （miRNAs） are small non-coding RNAs that target specific mRNAs to translational arrest and degradation, miRNAs are also key compo- nents of the normal p53 pathway, joining forces with Mdm2 and Mdm4 to maintain proper p53 activity. Here we review the current knowledge of miRNAs targeting Mdm2 and Mdm4, and their importance in different tissues and in pathological states such as cancer. In addition, we address the role of Alu sequences-highly abundant retroelements spread throughout the human genome, and their impact on gene regulation via the miRNA machinery. Aius occupy a significant portion of genes＇ 31UTR, and as such they have the potential to impact mRNA regulation. Since Alus are primate-specific, they introduce a new regulatory layer into primate genomes. Atus can influence and alter gene regulation, creating primate-specific cancer-preventive regulatory mechanisms to sustain the transition to longer life span in primates. We review the possible influence of Alu sequences on miRNA functionality in general and specifically within the p53 network.展开更多
Nowadays,p53 is like a Dreamliner airplane,riding the high skies of cancer research with dignity and pride.You do not have to be a card-bearing p53 researcher to know about p53,care about it,and respect it.Yet,this wa...Nowadays,p53 is like a Dreamliner airplane,riding the high skies of cancer research with dignity and pride.You do not have to be a card-bearing p53 researcher to know about p53,care about it,and respect it.Yet,this was not always so.As a matter of fact,in the first years of p53 research,from its discovery in the late 1970's to about the end of the 1980's,p53 was more like a kite:one moment high up in the air,the next moment being dragged on the ground.展开更多
文摘p53 is a transcription factor that governs numerous stress response pathways within the ceil. Maintaining the right levels of p53 is crucial for ceil survival and proper cellular homeostasis, The tight regulation of p53 involves many cellular components, most notably its major negative regulators Mdm2 and Mdm4, which maintain p53 protein amount and activity in tight check, microRNAs （miRNAs） are small non-coding RNAs that target specific mRNAs to translational arrest and degradation, miRNAs are also key compo- nents of the normal p53 pathway, joining forces with Mdm2 and Mdm4 to maintain proper p53 activity. Here we review the current knowledge of miRNAs targeting Mdm2 and Mdm4, and their importance in different tissues and in pathological states such as cancer. In addition, we address the role of Alu sequences-highly abundant retroelements spread throughout the human genome, and their impact on gene regulation via the miRNA machinery. Aius occupy a significant portion of genes＇ 31UTR, and as such they have the potential to impact mRNA regulation. Since Alus are primate-specific, they introduce a new regulatory layer into primate genomes. Atus can influence and alter gene regulation, creating primate-specific cancer-preventive regulatory mechanisms to sustain the transition to longer life span in primates. We review the possible influence of Alu sequences on miRNA functionality in general and specifically within the p53 network.
文摘Nowadays,p53 is like a Dreamliner airplane,riding the high skies of cancer research with dignity and pride.You do not have to be a card-bearing p53 researcher to know about p53,care about it,and respect it.Yet,this was not always so.As a matter of fact,in the first years of p53 research,from its discovery in the late 1970's to about the end of the 1980's,p53 was more like a kite:one moment high up in the air,the next moment being dragged on the ground.
