Open Access

Anti‑oncogenic and pro‑myogenic action of the MKK6/p38/AKT axis induced by targeting MEK/ERK in embryonal rhabdomyosarcoma

  • Authors:
    • Agnese Di Rocco
    • Simona Camero
    • Anna Benedetti
    • Biliana Lozanoska-Ochser
    • Francesca Megiorni
    • Cinzia Marchese
    • Lorenzo Stramucci
    • Carmela Ciccarelli
    • Marina Bouché
    • Gianluca Bossi
    • Francesco Marampon
    • Bianca Maria Zani
  • View Affiliations

  • Published online on: July 8, 2022     https://doi.org/10.3892/or.2022.8363
  • Article Number: 151
  • Copyright: © Di Rocco et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Insights into the molecular and cellular biology of embryonal rhabdomyosarcoma (ERMS), an aggressive paediatric tumour, are required in order to identify new targets for novel treatments that may benefit patients with this disease. The present study examined the functional effects of MKK3 and MKK6, two upstream kinases of p38, and found that the ectopic expression of MKK6 led to rapid p38 activation and the myogenic differentiation of ERMS cells, whereas MKK3 failed to induce differentiation, while maintaining the proliferation state. Myogenin and myosin heavy chain were induced in MKK6‑overexpressing ERMS cells and were inhibited by the p38 inhibitor, SB203580. The expression of Myc and ERK‑PO4 increased under the effect of SB203580, whereas it decreased in MKK6‑overexpressing cells. AKT activation was part of the myogenic program triggered by MKK6 overexpression alone. To the best of our knowledge, the present study demonstrates, for the first time, that the endogenous MKK6 pathway may be recovered by MEK/ERK inhibition (U0126 and trametinib) and that it concomitantly induces the reversal of the oncogenic pattern and the induction of the myogenic differentiation of ERMS cell lines. The effects of MEK/ERK inhibitors markedly increase the potential clinical applications in ERMS, particularly on account of the MEK inhibitor‑induced early MKK6/p38 axis activation and of their anti‑oncogenic effects. The findings presented herein lend further support to the antitumour effects of MKK6; MKK6 may thus represent a novel target for advanced personalised treatments against ERMS.

Related Articles

Journal Cover

September-2022
Volume 48 Issue 3

Print ISSN: 1021-335X
Online ISSN:1791-2431

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Di Rocco A, Camero S, Benedetti A, Lozanoska-Ochser B, Megiorni F, Marchese C, Stramucci L, Ciccarelli C, Bouché M, Bossi G, Bossi G, et al: Anti‑oncogenic and pro‑myogenic action of the MKK6/p38/AKT axis induced by targeting MEK/ERK in embryonal rhabdomyosarcoma. Oncol Rep 48: 151, 2022
APA
Di Rocco, A., Camero, S., Benedetti, A., Lozanoska-Ochser, B., Megiorni, F., Marchese, C. ... Zani, B.M. (2022). Anti‑oncogenic and pro‑myogenic action of the MKK6/p38/AKT axis induced by targeting MEK/ERK in embryonal rhabdomyosarcoma. Oncology Reports, 48, 151. https://doi.org/10.3892/or.2022.8363
MLA
Di Rocco, A., Camero, S., Benedetti, A., Lozanoska-Ochser, B., Megiorni, F., Marchese, C., Stramucci, L., Ciccarelli, C., Bouché, M., Bossi, G., Marampon, F., Zani, B. M."Anti‑oncogenic and pro‑myogenic action of the MKK6/p38/AKT axis induced by targeting MEK/ERK in embryonal rhabdomyosarcoma". Oncology Reports 48.3 (2022): 151.
Chicago
Di Rocco, A., Camero, S., Benedetti, A., Lozanoska-Ochser, B., Megiorni, F., Marchese, C., Stramucci, L., Ciccarelli, C., Bouché, M., Bossi, G., Marampon, F., Zani, B. M."Anti‑oncogenic and pro‑myogenic action of the MKK6/p38/AKT axis induced by targeting MEK/ERK in embryonal rhabdomyosarcoma". Oncology Reports 48, no. 3 (2022): 151. https://doi.org/10.3892/or.2022.8363