Missing content? – Request curation!
Request curation for specific Genes, Variants, or PubMed publications.
Have questions, comments, or suggestions? - Let us know!
Email us at : ckbsupport@genomenon.com
| Ref Type | Journal Article | ||||||||||||
| PMID | (12777976) | ||||||||||||
| Authors | Robinson WA, Miller TL, Harrold EA, Bemis LT, Brady BM, Nelson RP | ||||||||||||
| Title | The effect of flavopiridol on the growth of p16+ and p16- melanoma cell lines. | ||||||||||||
|
|||||||||||||
| URL | |||||||||||||
| Abstract Text | Flavopiridol is the first cyclin-dependent kinase inhibitor to enter clinical trials. Flavopiridol has been shown to mimic, in part, the effect of the cell cycle control gene p16, which is frequently lost or mutated in malignant melanoma, making it an ideal candidate for targeted therapy in this disease. In these studies we investigated the effect of flavopiridol, at various concentrations, on the growth and gene expression of nine human melanoma cell lines with intact, absent or mutated p16. A cytostatic effect of flavopiridol on the growth of six melanoma cell lines with a mutated or non-expressed p16 (p16-) was seen at low concentrations of flavopiridol (mean 50% inhibitory concentration [IC(50)] = 12.5 nM), while the three melanoma cell lines with intact p16 (p16+) required higher concentrations (mean IC(50) = 25 nM) to produce this effect. Apoptotic cell death increased with increasing concentrations of flavopiridol in both p16- and p16+ cells. Exposure of cells to high flavopiridol concentrations (>100 nM) resulted in decreased expression of genes downstream in the normal p16 cell cycle control pathway (Rb and E2F) and the anti-apoptotic gene BCL2. No change in BCL2 expression was found after exposure to IC(50) concentrations of flavopiridol. These data indicate that flavopiridol in low, clinically achievable concentrations may have significant cytostatic effects, particularly in p16- melanoma cells, and may provide new molecular-based therapies for melanoma, particularly when combined with agents that target anti-apoptotic mechanisms. | ||||||||||||
| Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
|---|
| Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
|---|
| Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
|---|
| Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
|---|
| Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|
| CDKN2A loss | melanoma | sensitive | Alvocidib | Preclinical | Actionable | In a preclinical study, melanoma cell lines with CDKN2A loss demonstrated a greater sensitivity to Alvocidib (flavopiridol) as compared to melanoma cell lines positive for CDKN2A (PMID: 12777976). | 12777976 |