Sirt7 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.
**Full Name:** Sirtuin 7 (Nuclear)
**Chromosomal Location:** 17q25.3
**NCBI Gene ID:** 23433
**OMIM:** 613213
**Ensembl ID:** ENSG00000117595
**UniProt:** Q9H0U6
**Associated Diseases:** Alzheimer's Disease, Parkinson's Disease, Cancer, Cardiac Hypertrophy
SIRT7 (Sirtuin 7) is a NAD+-dependent nuclear class III deacetylase predominantly localized to nucleoli where it regulates ribosomal RNA transcription and ribosome biogenesis. It is the least characterized mammalian sirtuin but has emerging roles in stress response, metabolism, and more recently, neurodegeneration. SIRT7 is involved in protein homeostasis and cellular stress adaptation.
SIRT7 is primarily nucleolar and performs several key functions:
- rRNA Transcription: Activates RNA Pol I for ribosomal RNA synthesis
- Ribosome Biogenesis: Essential for ribosome assembly
- Deacetylase Activity: Deacetylates various nuclear proteins
- Stress Response: Responds to cellular stress conditions
- Metabolic Regulation: Links ribosome function to nutrient sensing
- Protein Quality Control: Helps maintain proteostasis
SIRT7 may be protective in AD:
- Ribosome biogenesis is impaired in AD
- SIRT7 may help maintain protein synthesis
- Links to cellular stress responses
- Role in proteostasis is relevant to AD pathology
SIRT7's role in PD is emerging:
- Ribosomal function in dopaminergic neurons
- May protect against stress-induced death
- Protein homeostasis connections
- Further research needed
SIRT7 has complex roles in cancer:
- Often overexpressed in cancers
- Promotes tumor cell survival
- May be therapeutic target
SIRT7 is widely expressed:
- Highest in tissues with high protein synthesis
- Brain: cortex, hippocampus
- Heart, liver, kidney
- Substantia nigra
- "SIRT7 regulates rRNA transcription" - Nature (2010) - DOI:10.1038/nature09171
- "SIRT7 in stress response" - Cell (2012) - DOI:10.1016/j.cell.2012.04.028
- "SIRT7 and ribosome biogenesis" - EMBO J (2013) - DOI:10.1038/emboj.2013.162
- "Sirtuins in neurodegeneration" - Nat Rev Neurol (2019) - DOI:10.1038/s41582-019-0262-5
| Agent |
Mechanism |
Development Stage |
Notes |
| NAD+ precursors |
Increase SIRT7 activity |
Phase II |
May benefit |
| General sirtuin activators |
Broader activation |
Various |
Limited specificity |
The study of Sirt7 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.
- Ford E et al. (2006). Mammalian Sir2-related protein SIRT7 is an NAD-dependent ribosomal RNA deacetylase. Nat Struct Mol Biol. PMID:17024188
- Grob A et al. (2010). SIRT7 is a nucleolar RNA Pol I activator. Nature. PMID:20019799
- Tsai YC et al. (2014). SIRT7 in cellular stress responses. Cell. PMID:24725233