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  • Wahlström, Gudrun (author)

The variant rs77559646 associated with aggressive prostate cancer disrupts ANO7 mRNA splicing and protein expression.

  • Article/chapterEnglish2022

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  • 2022

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  • LIBRIS-ID:oai:gup.ub.gu.se/323228
  • https://gup.ub.gu.se/publication/323228URI
  • https://doi.org/10.1093/hmg/ddac012DOI

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  • Language:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Prostate cancer is among the most common cancers in men, with a large fraction of the individual risk attributable to heritable factors. A majority of the diagnosed cases does not lead to a lethal disease, and hence biological markers that can distinguish between indolent and fatal forms of the disease are of great importance for guiding treatment decisions. Although over 300 genetic variants are known to be associated with prostate cancer risk, few have been associated with the risk of an aggressive disease. One such variant is rs77559646 located in ANO7. This variant has a dual function. It constitutes a missense mutation in the short isoform of ANO7 and a splice region mutation in full-length ANO7. In this study, we have analyzed the impact of the variant allele of rs77559646 on ANO7 mRNA splicing using a minigene splicing assay and by performing splicing analysis with the tools IRFinder (intron retention finder), rMATS (replicate multivariate analysis of transcript splicing) and LeafCutter on RNA sequencing data from prostate tissue of six rs77559646 variant allele carriers and 43 non-carriers. The results revealed a severe disruption of ANO7 mRNA splicing in rs77559646 variant allele carriers. Immunohistochemical analysis of prostate samples from patients homozygous for the rs77559646 variant allele demonstrated a loss of apically localized ANO7 protein. Our study is the first to provide a mechanistic explanation for the impact of a prostate cancer risk SNP on ANO7 protein production. Furthermore, the rs77559646 variant is the first known germline loss-of-function mutation described for ANO7. We suggest that loss of ANO7 contributes to prostate cancer progression.

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  • Heron, Samuel (author)
  • Knuuttila, Matias (author)
  • Kaikkonen, Elina (author)
  • Tulonen, Nea (author)
  • Metsälä, Olli (author)
  • Löf, Christoffer (author)
  • Ettala, Otto (author)
  • Boström, Peter J (author)
  • Taimen, Pekka (author)
  • Poutanen, MattiGothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition,Centre for Bone and Arthritis Research,Institute of Medicine, Department of Internal Medicine and Clinical Nutrition(Swepub:gu)xpouma (author)
  • Schleutker, Johanna (author)
  • Göteborgs universitetInstitutionen för medicin, avdelningen för invärtesmedicin och klinisk nutrition (creator_code:org_t)
  • Göteborgs universitet
  • Gothenburg University
  • Göteborgs universitet
  • Gothenburg University

Related titles

  • In:Human molecular genetics31:12, s. 2063-20771460-2083

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