von Hippel-Lindau genetics
Last reviewed 01/2018
Genetic linkage studies in families with the von Hippel-Lindau syndrome indicate that the gene involved in the von Hippel-Lindau suppressor protein (pVHL) is on chromosome 3p25:
- pVHL - this has been shown to bind directly to the alpha subunits of the heterodimeric transcription factor HIF (hypoxia inducible factor)
- pVHL directs the polyubiquitination and, hence, destruction of HIF in the presence of oxygen
- loss of pVHL function leads to deregulation of HIF target genes (these play critical roles in angiogenesis)
Note that:
- 85% of all tumours of the renal parenchyma have mutations of the VHL gene
- 67% of all renal adenocarinomas have mutations of the VHL gene
Reference:
- Ivan M, Kaelin WG (2001). The von Hippel-Lindau tumor suppressor protein. Curr Opin Genet Dev.11(1):27-34.
- Karp, J.E. & Broder, S. (1995). Molecular foundations of cancer: new targets for intervention. Nature Med. 1(4), 309-320
- Iliopoulos, O. et al. (1995). Tumour suppression by the human von Hippel-Lindau gene product. Nature Med. 1(8), 822-826