What is MYC transcription factor?
Myc proteins are transcription factors that activate expression of many pro-proliferative genes through binding enhancer box sequences (E-boxes) and recruiting histone acetyltransferases (HATs).
How does MYC activate transcription?
A, in noncancerous cells, MYC expression is activated by growth factors through activation of enhancers. MYC protein, whose translation is enhanced by activated mTOR, dimerizes with MAX to form a heterodimer that activates transcription of genes containing high-affinity E-boxes.
Does MYC increase transcription?
The increase in c-Myc occupancy leads to increased transcription elongation by RNA polymerase II (RNA Pol II), and increased levels of transcripts per cell.
What is MYC amplification?
MYC Amplification is an inclusion criterion in 2 clinical trials for non-small cell lung carcinoma, of which 0 are open and 2 are closed. Of the trials that contain MYC Amplification and non-small cell lung carcinoma as inclusion criteria, 1 is phase 1 (0 open) and 1 is phase 1/phase 2 (0 open) [5].
What is Myc amplification?
How does Myc promote cell proliferation?
MYC stimulates cell-cycle progression and the cellular proliferation through the regulation of genes related to cell-cycle control. MYC induces positive cell-cycle regulators such as several cyclins, CDKs and E2F transcription factors (green arrows).
What is myc amplification?
What does MYC gene stand for?
MYC (MYC Proto-Oncogene, BHLH Transcription Factor) is a Protein Coding gene.
What is the Myc/Max/Mad network?
The Myc/Max/Mad network comprises a group of transcription factors whose distinct interactions result in gene-specific transcriptional activation or repression. A great deal of research indicates that the functions of the network play roles in cell proliferation, differentiation, and death.
Can Myc also function as a transcriptional repressor?
While evidence has steadily accumulated over the last years that Myc can function as transcriptional activator, the suggestion that Myc can also function as a transcriptional repressor has been ill-defined at the molecular level until recently ( Facchini and Penn, 1998; Claassen and Hann, 1999; Grandori et al., 2000; Amati et al., 2001 ).
What is the role of Myc in cell proliferation?
These genes and their products provide a mechanistic base to evaluate Myc’s role in stimulating cell proliferation, particularly the G1-S transition and the inactivation of the G1-S checkpoint (or restriction point) ( Fig. 4). Overcoming the latter is essential for cell proliferation.
How is the half life of c-Myc regulated?
The expression of the c-myc gene and the regulation of the protein are highly regulated. Recent progress implicates the Ras pathway in the control of the half life of Myc.