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Ref Type | Journal Article | ||||||||||||
PMID | (37838724) | ||||||||||||
Authors | Samarkina A, Youssef MK, Ostano P, Ghosh S, Ma M, Tassone B, Proust T, Chiorino G, Levesque MP, Goruppi S, Dotto GP | ||||||||||||
Title | Androgen receptor is a determinant of melanoma targeted drug resistance. | ||||||||||||
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Abstract Text | Melanoma provides a primary benchmark for targeted drug therapy. Most melanomas with BRAFV600 mutations regress in response to BRAF/MEK inhibitors (BRAFi/MEKi). However, nearly all relapse within the first two years, and there is a connection between BRAFi/MEKi-resistance and poor response to immune checkpoint therapy. We reported that androgen receptor (AR) activity is required for melanoma cell proliferation and tumorigenesis. We show here that AR expression is markedly increased in BRAFi-resistant melanoma cells, and in sensitive cells soon after BRAFi exposure. Increased AR expression is sufficient to render melanoma cells BRAFi-resistant, eliciting transcriptional changes of BRAFi-resistant subpopulations, including elevated EGFR and SERPINE1 expression, of likely clinical significance. Inhibition of AR expression or activity blunts changes in gene expression and suppresses proliferation and tumorigenesis of BRAFi-resistant melanoma cells, promoting clusters of CD8+ T cells infiltration and cancer cells killing. Our findings point to targeting AR as possible co-therapeutical approach in melanoma treatment. |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
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Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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BRAF V600E | melanoma | sensitive | AZD3514 + Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, the addition of AZD3514 to Tafinlar (dabrafenib) treatment inhibited colony formation in melanoma cell lines harboring BRAF V600E in culture (PMID: 37838724). | 37838724 |
BRAF V600E | melanoma | sensitive | ARCC4 + Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, the addition of ARCC4 to Tafinlar (dabrafenib) treatment inhibited colony formation in melanoma cell lines harboring BRAF V600E in culture (PMID: 37838724). | 37838724 |