MYC

MYC proto-oncogene, bHLH transcription factor is a

This gene is a

As a drug target

Under normal circumstances, c-Myc through its bHLHZip domain heterodimerizes with other transcription factors such as MAD, MAX, and MNT. Myc/Max dimers activate gene transcription, while Mad/Max and Mnt/Max dimers inhibit the activity of Myc.^[6] c-MYC is over expressed in the majority of human cancers and in cancers where it is overexpressed, it drives proliferation of cancer cells.^[7][8]

A recombinant form of c-Myc called Omomyc in which four residues are mutated has been produced.

The Omomyc displays high affinity for MAX (Myc-associated protein X) and for enhancer box element CACGTG DNA sequences, that result in the uncoupling of cellular proliferation from normal growth factor regulation and contribute to many of the phenotypic hallmarks of cancer.[11] Omomyc also can bind MYC monomers and prevent it entering the nucleus.^[12]

The recombinantly produced Omomyc miniprotein has been developed as a drug (OMO-103) and is currently in clinical trials.^[13]

References

Further reading

• Hann SR, King MW, Bentley DL, Anderson CW, Eisenman RN (January 1988). "A non-AUG translational initiation in c-myc exon 1 generates an N-terminally distinct protein whose synthesis is disrupted in Burkitt's lymphomas". Cell. 52 (2): 185–95.
  S2CID 3012009
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• Hiyama T, Haruma K, Kitadai Y, Ito M, Masuda H, Miyamoto M, Tanaka S, Yoshihara M, Sumii K, Shimamoto F, Chayama K (2001). "c-myc gene mutation in gastric mucosa-associated lymphoid tissue (MALT) lymphoma and diffuse large B-cell lymphoma". Oncol. Rep. 8 (2): 289–92.
  PMID 11182042
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• Ruf IK, Rhyne PW, Yang H, Borza CM, Hutt-Fletcher LM, Cleveland JL, Sample JT (2001). "EBV Regulates c-MYC, Apoptosis, and Tumorigenicity in Burkitt's Lymphoma". Epstein-Barr Virus and Human Cancer. Current Topics in Microbiology and Immunology. Vol. 258. pp. 153–60.
  PMID 11443860. {{cite book}}: |journal= ignored (help
  )
• Hu HM, Arcinas M, Boxer LM (March 2002). "A Myc-associated zinc finger protein-related factor binding site is required for the deregulation of c-myc expression by the immunoglobulin heavy chain gene enhancers in Burkitt's lymphoma". J. Biol. Chem. 277 (12): 9819–24.
  PMID 11777933
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• Hilker M, Tellmann G, Buerke M, Moersig W, Oelert H, Lehr HA, Hake U (2001). "Expression of the proto-oncogene c-myc in human stenotic aortocoronary bypass grafts". Pathol. Res. Pract. 197 (12): 811–6.
  PMID 11795828
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• Feng XH, Liang YY, Liang M, Zhai W, Lin X (January 2002). "Direct interaction of c-Myc with Smad2 and Smad3 to inhibit TGF-beta-mediated induction of the CDK inhibitor p15(Ink4B)". Mol. Cell. 9 (1): 133–43.
  PMID 11804592
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• Kuschak TI, Kuschak BC, Taylor CL, Wright JA, Wiener F, Mai S (January 2002). "c-Myc initiates illegitimate replication of the ribonucleotide reductase R2 gene". Oncogene. 21 (6): 909–20.
  PMID 11840336
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• Chettab K, Zibara K, Belaiba SR, McGregor JL (January 2002). "Acute hyperglycaemia induces changes in the transcription levels of 4 major genes in human endothelial cells: macroarrays-based expression analysis". Thromb. Haemost. 87 (1): 141–8.
  S2CID 22124540
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This article incorporates text from the United States National Library of Medicine, which is in the public domain.