Abstract：
:The majority of colorectal cancer (CRC) arises from precursor lesions known as polyps. The molecular determinants that distinguish benign from malignant polyps remain unclear. To molecularly characterize polyps, we utilized Cancer Adjacent Polyp (CAP) and Cancer Free Polyp (CFP) patients. CAPs had tissues from the residual polyp of origin and contiguous cancer; CFPs had polyp tissues matched to CAPs based on polyp size, histology and dysplasia. To determine whether molecular features distinguish CAPs and CFPs, we conducted Whole Genome Sequencing, RNA-seq, and RRBS on over 90 tissues from 31 patients. CAPs had significantly more mutations, altered expression and hypermethylation compared to CFPs. APC was significantly mutated in both polyp groups, but mutations in TP53, FBXW7, PIK3CA, KIAA1804 and SMAD2 were exclusive to CAPs. We found significant expression changes between CAPs and CFPs in GREM1, IGF2, CTGF, and PLAU, and both expression and methylation alterations in FES and HES1. Integrative analyses revealed 124 genes with alterations in at least two platforms, and ERBB3 and E2F8 showed aberrations specific to CAPs across all platforms. These findings provide a resource of molecular distinctions between polyps with and without cancer, which have the potential to enhance the diagnosis, risk assessment and management of polyps.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Druliner BR,Wang P,Bae T,Baheti S,Slettedahl S,Mahoney D,Vasmatzis N,Xu H,Kim M,Bockol M,O'Brien D,Grill D,Warner N,Munoz-Gomez M,Kossick K,Johnson R,Mouchli M,Felmlee-Devine D,Washechek-Aletto J,Smyrk T,Oberg A,doi
10.1038/s41598-018-21525-4subject
Has Abstractpub_date
2018-02-16 00:00:00pages
3161issue
1issn
2045-2322pii
10.1038/s41598-018-21525-4journal_volume
8pub_type
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