Molecular profiling of parathyroid hyperplasia, adenoma and carcinoma

Kristóf Árvai, Katalin Nagy, Helga Barti-Juhász, István Peták, Tibor Krenács, Tamás Micsik, Gyula Végső, Ferenc Perner, Béla Szende

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The objective of the study was to examine proliferation and apoptosis associated gene expression in the whole sequence parathyroid lesions to reveal specific features of carcinoma. This study was based on surgically removed parathyroid tissues, gene expression analysis was performed both at gene and protein level. First, mRNA isolation was performed from deep-frozen tissue samples, and further apoptosis pathway-specific cDNA macroarray analysis was carried out. The results were validated with real-time PCR. Subsequently, protein expression was analyzed with immunhistochemistry on TissueMicro Array multi-blocks derived from several paraffinembedded samples. cDNA macroarrays revealed elevated expression of both pro-apoptotic (FAS receptor, TRAIL ligand, CASPASE8, and -4) and anti-apoptotic (cIAP1, APOLLON) genes in benign proliferative lesions compared to that in normal gland. TMA studies showed overexpression of KI67, P53, SURVIVIN and APOLLON protein and failure of expression of P27, BCL2, BAX, CHROMOGRANIN-A, SYNAPTOPHYSIN, CYCLIND1, FLIP, TRAIL, CK8, CK18, CK19 in parathyroid carcinoma was detected. These alterations in gene expression of the investigated products could be used in differentiation between beningn and malignant proliferative processes of the parathyroid gland. Authors conclude that a series of alterations in gene expression such as overexpression of APOLLON, P53, KI67 and suppression of P27, BCL2, BAX lead to uncontrolled cell proliferation, but still not leading to increased apoptotic activity in parathyroid carcinoma.

Original languageEnglish
Pages (from-to)607-614
Number of pages8
JournalPathology and Oncology Research
Volume18
Issue number3
DOIs
Publication statusPublished - Jul 2012

Keywords

  • Apoptosis
  • Gene expression profiling
  • Parathyroid lesions
  • Tissue micro array

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Oncology
  • Cancer Research

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