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http://dx.doi.org/10.1111/bjd.19335 | DOI Listing |
J Immunother Cancer
November 2024
Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
Melanoma arising in association with a blue nevus (BN) is rare but has molecular similarities to uveal melanoma (UM), including GNAQ/11 mutations. Tebentafusp was recently approved for UM based on improved overall survival in a phase 3 study. We hypothesized that tebentafusp may be active in BN-associated melanoma.
View Article and Find Full Text PDFMol Biol (Mosk)
October 2024
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia.
Acta Pharm Sin B
March 2024
Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200001, China.
Nat Cancer
March 2024
Oncology, Novartis Institute for Biomedical Research, Basel, Switzerland.
Activating mutations in GNAQ/GNA11 occur in over 90% of uveal melanomas (UMs), the most lethal melanoma subtype; however, targeting these oncogenes has proven challenging and inhibiting their downstream effectors show limited clinical efficacy. Here, we performed genome-scale CRISPR screens along with computational analyses of cancer dependency and gene expression datasets to identify the inositol-metabolizing phosphatase INPP5A as a selective dependency in GNAQ/11-mutant UM cells in vitro and in vivo. Mutant cells intrinsically produce high levels of the second messenger inositol 1,4,5 trisphosphate (IP3) that accumulate upon suppression of INPP5A, resulting in hyperactivation of IP3-receptor signaling, increased cytosolic calcium and p53-dependent apoptosis.
View Article and Find Full Text PDFAm J Cancer Res
January 2023
Department of Pharmacology and Physiology, Université de Montréal Montréal, QC H3T 1C5, Canada.
Uveal melanoma (UM) is the most common primary intraocular malignant tumor type in adults. Even after the treatment of the ocular tumor, the prognosis of patients with metastasis remains poor. Hence, an urgent unmet need exists to identify novel approaches to treat advanced UM.
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