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Mutations in RAS/BRAF genes in rectal tumors: From adenomas to early carcinomas

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Abstract

The frequency and spectrum of mutations in RAS/BRAF genes were studied in rectal adenomas, carcinomas in situ, and adenocarcinomas. It is shown that the frequency of KRAS mutations decreases from adenoma to adenocarcinoma; most adenomas and carcinomas in situ are heterogeneous and consist of several subclones. Possible models of colorectal cancer pathogenesis are discussed.

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References

  1. Vogelstein, B., Papadopoulos, N., Velculescu, V.E., et al., Cancer genome landscapes, Science, 2013, vol. 339, no. 6127, pp. 1546–1558. doi 10.1126/science. 1235122

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  2. Bai, J., Gao, J., Mao, Z., et al., Genetic mutations in human rectal cancers detected by targeted sequencing, J. Hum. Genet., 2015, vol. 60, no. 10, pp. 589–596. doi 10.1038/jhg.2015.71

    Article  CAS  PubMed  Google Scholar 

  3. Zauber, P., Marotta, S., and Sabbath-Solitare, M., KRAS gene mutations are more common in colorectal villous adenomas and in situ carcinomas than in carcinomas, Int. J. Mol. Epidemiol. Genet., 2013, vol. 4, no. 1, pp. 1–10.

    CAS  PubMed  PubMed Central  Google Scholar 

  4. Yadamsuren, E.A., Nagy, S., Pajor, L., et al., Characteristics of advanced and non-advanced sporadic polypoid colorectal adenomas: correlation to KRAS mutations, Pathol. Oncol. Res., 2012, vol. 18, no. 4, pp. 1077–1084.

    Article  CAS  PubMed  Google Scholar 

  5. Fearon, E.R. and Vogelstein, B., A genetic model for colorectal tumorigenesis, Cell, 1990, vol. 61, pp. 759–767.

    Article  CAS  PubMed  Google Scholar 

  6. Borras, E., San Lucas, F.A., Chang, K., et al., Genomic landscape of colorectal mucosa and adenomas, Cancer Prev. Res., 2016, vol. 9, no. 6, pp. 417–427. doi 10.1158/1940-6207

    Article  CAS  Google Scholar 

  7. Thirlwell, C., Will, O.C., Domingo, E., et al., Clonality assessment and clonal ordering of individual neoplastic crypts shows polyclonality of colorectal adenomas, Gastroenterology, 2010, vol. 138, pp. 1441–1454. doi 10.1053/j.gastro.2010.01.033

    Article  CAS  PubMed  Google Scholar 

  8. Sottoriva, A., Kang, H., Ma, Z., et al., A Big Bang model of human colorectal tumor growth, Nat. Genet., 2015, vol. 47, no. 3, pp. 209–216. doi 10.1038/ng.3214

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  9. Parsons, B.L., Marchant-Miros, K.E., Delongchamp, R.R., et al., ACB-PCR quantification of K-RAS codon 12 GAT and GTT mutant fraction in colon tumor and non-tumor tissue, Cancer Invest., 2010, vol. 28, no. 4, pp. 364–375. doi 10.3109/07357901003630975

    Article  CAS  PubMed  Google Scholar 

  10. Parsons, B.L. and Myers, M.B., Personalized cancer treatment and the myth of KRAS wild-type colon tumors, Discov. Med., 2013, vol. 15, no. 83, pp. 259–267.

    PubMed  Google Scholar 

  11. Matano, M., Date, S., Shimokawa, M., et al., Modeling colorectal cancer using CRISPR-Cas9-mediated engineering of human intestinal organoids, Nat. Med., 2015, vol. 21, no. 3, pp. 256–262. doi 10.1038/ nm.3802

    CAS  PubMed  Google Scholar 

  12. Diaz, L.A., Williams, R.T., Wu, J., et al., The molecular evolution of acquired resistance to targeted EGFR blockade in colorectal cancers. Nature, 2012, vol. 486, no. 7404, pp. 537–540. doi 10.1038/nature11219

    CAS  PubMed  PubMed Central  Google Scholar 

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Correspondence to N. I. Pospekhova.

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Original Russian Text © Yu.A. Shelygin, O.A. Maynovskaya, E.G. Rybakov, V.P. Shubin, S.V. Chernyshov, S.A. Frolov, V.N. Kashnikov, N.I. Pospekhova, 2017, published in Genetika, 2017, Vol. 53, No. 10, pp. 1218–1223.

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Shelygin, Y.A., Maynovskaya, O.A., Rybakov, E.G. et al. Mutations in RAS/BRAF genes in rectal tumors: From adenomas to early carcinomas. Russ J Genet 53, 1146–1151 (2017). https://doi.org/10.1134/S1022795417080075

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  • DOI: https://doi.org/10.1134/S1022795417080075

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