EGFR is involved in dermatofibrosarcoma protuberans progression to high grade sarcoma

Oncotarget
Amélie OsioMaxime Battistella

Abstract

Dermatofibrosarcoma protuberans (DFSP), amounting to 6% of all soft tissue sarcomas, has a slow growth rate, contrasting with a likelihood for local recurrence and a 10-20% evolution to higher-grade sarcoma, or "transformed DFSP" (DFSP-T). At molecular level, the characteristic COL1A1-PDGFB rearrangement, leading to sustained PDGFR signaling, is not linked to the evolutive potential. Here, we studied EGFR, another tyrosine kinase receptor, using laser-microdissection to select the different histologic components of DFSP (DFSP center, DFSP infiltrative periphery, DFSP-T higher-grade sarcoma), in 22 patients followed over 3 to 156 months. EGFR protein and mRNA were expressed in 13/22 patients with DFSP or DFSP-T, and increased with tumor progression, both in microdissected areas of higher-grade sarcomas and in microdissected areas of local extension. No cancer-associatedEGFRgene mutation or copy-number variation, nor anyKRAS, BRAF, NRAShotspot mutations were found in any microdissected area. Among epithelial-mesenchymal transition factors tested, SNAIL 1/2 had the same expression pattern as EGFR while ZEB1/2 or TWIST1/2 did not. Using a proteome profiler phospho-kinase array on 3 DFSP and 3 DFSP-T cryopreserved tissue samples, EG...Continue Reading

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Citations

Mar 16, 2019·Current Treatment Options in Oncology·Takeshi IwasakiYoshinao Oda
Dec 22, 2020·The Journal of Investigative Dermatology·Daniel I SchlessingerM Laurin Council
Sep 22, 2020·The Journal of Investigative Dermatology·Julie DelyonCeleste Lebbe

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Methods Mentioned

BETA
PCR
profiler
xenografts
xenograft

Software Mentioned

GraphPad Prism
QuantaSoft

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