4.8 Article

The long non-coding RNA SAMMSON is essential for uveal melanoma cell survival

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ONCOGENE
卷 41, 期 1, 页码 15-25

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SPRINGERNATURE
DOI: 10.1038/s41388-021-02006-x

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资金

  1. Foundation Against Cancer grant (Stichting tegen Kanker)
  2. Standup Against Cancer grant (Kom op tegen Kanker)
  3. Ghent University Industrial Research Fund (IOF)
  4. Ghent University GOA research grant
  5. Fund for Scientific Research Flanders (FWO Vlaanderen)
  6. Melanoma Research Alliance (MRA) Amanda
  7. Jonathan Eilian young investigator award
  8. Fund of Scientific Research Flanders (FWO Vlaanderen)

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The inhibition of SAMMSON in uveal melanoma cells has shown to impair cell growth and viability, induce apoptosis, and affect protein translation levels, highlighting its potential as a therapeutic target. This study demonstrates the essential role of SAMMSON expression in uveal melanoma cell survival, suggesting ASO-mediated silencing of SAMMSON as a promising treatment strategy for both primary and metastatic uveal melanoma patients.
Long non-coding RNAs (lncRNAs) can exhibit cell-type and cancer-type specific expression profiles, making them highly attractive as therapeutic targets. Pan-cancer RNA sequencing data revealed broad expression of the SAMMSON lncRNA in uveal melanoma (UM), the most common primary intraocular malignancy in adults. Currently, there are no effective treatments for UM patients with metastatic disease, resulting in a median survival time of 6-12 months. We aimed to investigate the therapeutic potential of SAMMSON inhibition in UM. Antisense oligonucleotide (ASO)-mediated SAMMSON inhibition impaired the growth and viability of a genetically diverse panel of uveal melanoma cell lines. These effects were accompanied by an induction of apoptosis and were recapitulated in two uveal melanoma patient derived xenograft (PDX) models through subcutaneous ASO delivery. SAMMSON pulldown revealed several candidate interaction partners, including various proteins involved in mitochondrial translation. Consequently, inhibition of SAMMSON impaired global, mitochondrial and cytosolic protein translation levels and mitochondrial function in uveal melanoma cells. The present study demonstrates that SAMMSON expression is essential for uveal melanoma cell survival. ASO-mediated silencing of SAMMSON may provide an effective treatment strategy to treat primary and metastatic uveal melanoma patients.

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