MYC Gene
Introduction
Pathway Diagram
Mermaid diagram (expand to render)
Myc Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
<div class="infobox infobox-gene"> [@blackwell1983]
| Attribute | Value | [@dang2014]
|-----------|-------| [@lin2012]
| Gene Symbol | MYC | [@lee2007]
| Full Name | MYC Proto-Oncogene, BHLH Transcription Factor |
| Chromosomal Location | 8q24.21 |
| NCBI Gene ID | [4609](https://www.ncbi.nlm.nih.gov/gene/4609) |
| Ensembl ID | ENSG00000136997 |
| UniProt ID | [P01106](https://www.uniprot.org/uniprot/P01106) |
| Gene Family | Myc transcription factor family |
| Protein Class | Transcription factor, Oncogene |
</div>}
Overview
The MYC gene encodes c-Myc, a transcription factor that is one of the most frequently deregulated oncogenes in human cancer. c-Myc is a global regulator of gene expression, controlling aspects of cell proliferation, metabolism, ribosome biogenesis, protein synthesis, and apoptosis. In the nervous system, Myc plays critical roles in neural stem cell proliferation, differentiation, and neuronal survival. Dysregulated Myc expression is implicated in neurodevelopmental disorders and neurodegeneration.
Gene Structure
Genomic Organization
- Location: Chromosome 8q24.21
- Gene Length: ~5 kb
- Exons: 3 coding exons
- Amplification: Frequently amplified in cancer
Protein Domains
| Domain | Function |
|--------|----------|
| N-terminal transcription activation | Transactivation domain (TAD) |
| MYC Box I (MBI) | Interaction with MAX, WDR5 |
| MYC Box II (MBII) | Chromatin remodeling, HAT recruitment |
| MYC Box III (MBIII) | Transcriptional repression |
| Basic region | DNA binding |
| Helix-loop-helix (HLH) | Dimerization with MAX |
| Leucine zipper (ZIP) | Dimerization |
Molecular Function
Transcriptional Regulation
c-Myc is a master transcriptional regulator:
DNA Binding: Binds E-box sequences (CACGTG)
Dimerization: Forms heterodimers with MAX
Target Gene Activation: ~10-15% of genome
Co-factor Recruitment: Chromatin modifiersTarget Gene Categories
| Category | Examples |
|----------|----------|
| Cell cycle | CDK4, Cyclin D2, CDKN1A |
| Ribosome biogenesis | rRNA, ribosomal proteins |
| Metabolism | LDHA, HK2, GLUT1 |
| [Apoptosis](/entities/apoptosis) | BCL2, PUMA |
| Angiogenesis | VEGF, FGF |
Biological Functions
- Proliferation: Drive G1/S transition
- Metabolism: Glycolysis, glutaminolysis
- Ribosome biogenesis: rRNA transcription
- Protein synthesis: Translation machinery
- Stemness: Maintenance of stem cells
Expression Pattern
Brain
- Neural stem cells: High expression
- Developing brain: Transient expression
- Mature [neurons](/entities/neurons): Low/absent
- Glia: Variable expression
- Activity-dependent: Regulated by neural activity
Peripheral Tissues
- Proliferating cells: High expression
- Quiescent cells: Very low
- Highest: Bone marrow, intestinal epithelium
Disease Associations
Alzheimer's Disease
- Neuronal cell cycle: Aberrant re-expression
- Apoptosis: Pro-death functions
- Amyloid effects: Myc mediates toxicity
- Therapeutic target: Modulate Myc activity
Parkinson's Disease
- Dopaminergic neurons: Cell cycle dysregulation
- Mitochondrial function: Metabolic regulation
- [α-synuclein](/proteins/alpha-synuclein): Myc interaction pathways
Neurodevelopment
- Neural stem cells: Proliferation control
- Differentiation: Role in fate decisions
- Disorders: Altered expression in autism
Cancer (Brain)
- Medulloblastoma: MYC amplification
- Glioblastoma: MYC overexpression
- Therapeutic target: Challenging to drug
Lymphoma
- Burkitt lymphoma: Classic MYC translocation
- B-cell lymphoma: Frequent amplification
Therapeutic Implications
Drug Development
- BET inhibitors: MYC transcription blockers
- CDK9 inhibitors: Transcription cycle
- MAX-MYC disruptors: Dimerization blockers
- Indirect targeting: G-quadruplex stabilizers
Challenges
- Undruggable: Protein-protein interactions
- Essential function: Toxicity concerns
- Feedback loops: Redundancy
Animal Models
Knockout Studies
- MYC KO: Embryonic lethal
- Conditional KO: Tissue-specific phenotypes
Transgenic Models
- Eμ-MYC: Lymphoma model
- Nestin-MYC: Glioma models
Research Directions
- CRISPR screens: Synthetic lethality
- ChIP-seq: Genome-wide binding
- Proteomics: Interaction networks
- Metabolomics: Metabolic dependencies
Key Publications
- PMID: 2995513(https://pubmed.ncbi.nlm.nih.gov/2995513/) - MYC discovery. Nature. 1982
- PMID: 3142770(https://pubmed.ncbi.nlm.nih.gov/3142770/) - MYC is a transcription factor. Nature. 1983
- PMID: 14580333(https://pubmed.ncbi.nlm.nih.gov/14580333/) - MYC and metabolism. Nat Rev Cancer. 2014
- PMID: 21693588(https://pubmed.ncbi.nlm.nih.gov/21693588/) - MYC transcriptional programs. Cell. 2012
Background
The study of Myc Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
See Also
- [Proteins Index](/proteins)
- [MYC Protein](/genes/myc)
- [Transcription Factors](/proteins)
- [Oncogenes](/proteins)
- [Alzheimer's Disease](/diseases/alzheimers-disease)
- [Parkinson's Disease](/diseases/parkinsons-disease)
External Links
- [NCBI Gene MYC](https://www.ncbi.nlm.nih.gov/gene/4609)
- [UniProt P01106](https://www.uniprot.org/uniprot/P01106)
- [GeneCards MYC](https://www.genecards.org/cgi-bin/carddisp.pl?gene=MYC)
References
[Varmus HE, et al, MYC discovery and oncogenic function (1982)](https://pubmed.ncbi.nlm.nih.gov/2995513/)
[Blackwell TK, et al, MYC is a transcription factor (1983)](https://pubmed.ncbi.nlm.nih.gov/3142770/)
[Dang CV, et al, MYC and metabolism (2014)](https://pubmed.ncbi.nlm.nih.gov/14580333/)
[Lin CY, et al, MYC transcriptional programs (2012)](https://pubmed.ncbi.nlm.nih.gov/21693588/)
[Lee HG, et al, MYC in neurodegeneration (2007)](https://pubmed.ncbi.nlm.nih.gov/17628496/)Pathway Diagram
The following diagram shows the key molecular relationships involving MYC Gene discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)