MicroRNA-based molecular classification of papillary thyroid carcinoma

  • Authors:
    • Francesca Rosignolo
    • Lorenzo Memeo
    • Fabio Monzani
    • Cristina Colarossi
    • Valeria Pecce
    • Antonella Verrienti
    • Cosimo Durante
    • Giorgio Grani
    • Livia Lamartina
    • Stefano Forte
    • Daniela Martinetti
    • Dario Giuffrida
    • Diego Russo
    • Fulvio Basolo
    • Sebastiano Filetti
    • Marialuisa Sponziello
  • View Affiliations

  • Published online on: April 7, 2017     https://doi.org/10.3892/ijo.2017.3960
  • Pages: 1767-1777
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Abstract

MicroRNA (miRNA) expression is dysregulated in many human malignancies, and a growing number of studies are focused on their potential use as tumor biomarkers. To identify a miRNA signature for papillary thyroid carcinomas (PTC), we investigated miRNA expression profiles in two independent cohorts of PTCs, which included major histological subtypes [classical-type (PTC‑CT), follicular-variant (PTC‑FV), and tall-cell variant (PTC‑TCV)] and cases with low or intermediate risk of recurrence. Using TaqMan® Array Human MicroRNA A+B Cards v3.0, we first performed microRNA profiling of normal and neoplastic thyroid tissues from 29 PTC patients. Promising candidates were then investigated in a second, independent cohort of 76 PTCs using Custom TaqMan® Array MicroRNA Cards. We identified a molecular signature of 11 miRNAs that were significantly upregulated (miR‑146b-5p, miR‑146b-3p, miR‑221-3p, miR‑222‑5p, miR‑222‑3p) or downregulated (miR‑1179, miR‑486‑5p, miR‑204-5p, miR‑7-2-3p, miR‑144-5p, miR‑140-3p) in PTC tissues vs. normal thyroid tissue. Upregulation of miR‑146b-5p and miR‑222‑3p was also significantly associated with an increased risk of recurrence. Higher than normal expression of miR‑146b-5p and miR‑146b-3p characterized PTC‑CT and PTC‑TCV but not PTC‑FV, whereas miR‑21-5p was significantly upregulated only in PTC‑TCV. When PTC‑FV were subclassified as encapsulated (PTC‑EFV) or infiltrative (PTC‑IFV), miR‑204-5p was downregulated in all histological subtypes except PTC‑EFV, which displayed expression levels similar to those of normal thyroid tissues. These findings provide new insights into the molecular classification of PTC, showing that different miRNA expression profiles are associated with different histological types of PTC and different risks of recurrence.
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May-2017
Volume 50 Issue 5

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Spandidos Publications style
Rosignolo F, Memeo L, Monzani F, Colarossi C, Pecce V, Verrienti A, Durante C, Grani G, Lamartina L, Forte S, Forte S, et al: MicroRNA-based molecular classification of papillary thyroid carcinoma. Int J Oncol 50: 1767-1777, 2017.
APA
Rosignolo, F., Memeo, L., Monzani, F., Colarossi, C., Pecce, V., Verrienti, A. ... Sponziello, M. (2017). MicroRNA-based molecular classification of papillary thyroid carcinoma. International Journal of Oncology, 50, 1767-1777. https://doi.org/10.3892/ijo.2017.3960
MLA
Rosignolo, F., Memeo, L., Monzani, F., Colarossi, C., Pecce, V., Verrienti, A., Durante, C., Grani, G., Lamartina, L., Forte, S., Martinetti, D., Giuffrida, D., Russo, D., Basolo, F., Filetti, S., Sponziello, M."MicroRNA-based molecular classification of papillary thyroid carcinoma". International Journal of Oncology 50.5 (2017): 1767-1777.
Chicago
Rosignolo, F., Memeo, L., Monzani, F., Colarossi, C., Pecce, V., Verrienti, A., Durante, C., Grani, G., Lamartina, L., Forte, S., Martinetti, D., Giuffrida, D., Russo, D., Basolo, F., Filetti, S., Sponziello, M."MicroRNA-based molecular classification of papillary thyroid carcinoma". International Journal of Oncology 50, no. 5 (2017): 1767-1777. https://doi.org/10.3892/ijo.2017.3960