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Published in: Diagnostic Pathology 1/2020

01-12-2020 | Research

Role of hypoxia-related proteins in adenoid cystic carcinoma invasion

Authors: Raíssa Pinheiro de Mendonça, Giordanna Pereira Chemelo, Geovanni Pereira Mitre, Dimitra Castelo Branco, Natacha Malu Miranda da Costa, Fabrício Mesquita Tuji, Maria Sueli da Silva Kataoka, Ricardo Alves Mesquita, Sérgio de Melo Alves Júnior, João de Jesus Viana Pinheiro

Published in: Diagnostic Pathology | Issue 1/2020

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Abstract

Background

Among cancers affecting the oral cavity, adenoid cystic carcinoma (ACC) is a relatively common malignant neoplasm. It has high rates of metastasis and recurrence and is associated with significant morbidity. During the progression of ACC, the oxygen concentration is reduced in specific areas of the tumour microenvironment, leading to intratumoural hypoxia. The expression of NOTCH1, a disintegrin and metalloproteinase 12 (ADAM-12), hypoxia-inducible factor 1 alpha (HIF-1α), and heparin-binding epidermal growth factor (HB-EGF) under hypoxic conditions has been implicated in invadopodia formation, tumour invasiveness, and metastasis. The aim of this study was to analyse the expression of these proteins to elucidate the mechanisms underlying ACC invasiveness.

Methods

Fifteen ACC samples and 10 normal-looking salivary gland (SG) samples were used to investigate the expression of these proteins by immunohistochemistry. Primary antibodies against NOTCH1, ADAM-12, HIF-1α, and HB-EGF were used.

Results

The immunoexpression of all proteins was higher in ACC samples than in SG samples (p < 0.05).

Conclusions

There was increased expression of proteins associated with hypoxia and tumour invasiveness in ACC samples, which indicates a possible role of these proteins in the biological behaviour of this tumour.
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Metadata
Title
Role of hypoxia-related proteins in adenoid cystic carcinoma invasion
Authors
Raíssa Pinheiro de Mendonça
Giordanna Pereira Chemelo
Geovanni Pereira Mitre
Dimitra Castelo Branco
Natacha Malu Miranda da Costa
Fabrício Mesquita Tuji
Maria Sueli da Silva Kataoka
Ricardo Alves Mesquita
Sérgio de Melo Alves Júnior
João de Jesus Viana Pinheiro
Publication date
01-12-2020
Publisher
BioMed Central
Published in
Diagnostic Pathology / Issue 1/2020
Electronic ISSN: 1746-1596
DOI
https://doi.org/10.1186/s13000-020-00967-3

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