RET receptor expression and interaction with TRK receptors in neuroblastomas

  • Authors:
    • Laura H. Tetri
    • Venkatadri Kolla
    • Rebecca L. Golden
    • Radhika Iyer
    • Jamie L. Croucher
    • Jee‑Hye Choi
    • Suzanne P. Macfarland
    • Koumudi Naraparaju
    • Peng Guan
    • Ferro Nguyen
    • Krutika S. Gaonkar
    • Pichai Raman
    • Garrett M. Brodeur
  • View Affiliations

  • Published online on: April 15, 2020     https://doi.org/10.3892/or.2020.7583
  • Pages: 263-272
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Abstract

Neuroblastomas (NBs) have heterogeneous clinical behavior, from spontaneous regression or differentiation to relentless progression. Evidence from our laboratory and others suggests that neurotrophin receptors contribute to these disparate behaviors. Previously, the role of TRK receptors in NB pathogenesis was investigated. In the present study, the expression of RET and its co‑receptors in a panel of NB cell lines was investigated and responses to cognate ligands GDNF, NRTN, and ARTN with GFRα1‑3 co‑receptor expression, respectively were found to be correlated. RET expression was high in NBLS, moderate in SY5Y, low/absent in NBEBc1 and NLF cells. All cell lines expressed at least one of GFRα co‑receptors. In addition, NBLS, SY5Y, NBEBc1 and NLF cells showed different morphological changes in response to ligands. As expected, activation of RET/GFRα3 by ARTN resulted in RET phosphorylation. Interestingly, activation of TrkA by its cognate ligand NGF resulted in RET phosphorylation at Y905, Y1015, and Y1062, and this was inhibited in a dose‑dependent manner by the TRK inhibitor (CEP‑701). Conversely, RET activation by ARTN in NBLS cells led to phosphorylation of TrkA. This suggests a physical association between RET and TRK proteins, and cross‑talk between these two receptor pathways. Finally, RET, GFR and TRK expression in primary tumors was investigated and a significant association between RET, its co‑receptors and TRK expression was demonstrated. Thus, the present data support a complex model of interacting neurotrophin receptor pathways in the regulation of cell growth and differentiation in NBs.
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July 2020
Volume 44 Issue 1

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

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APA
Tetri, L.H., Kolla, V., Golden, R.L., Iyer, R., Croucher, J.L., Choi, J. ... Brodeur, G.M. (2020). RET receptor expression and interaction with TRK receptors in neuroblastomas. Oncology Reports, 44, 263-272. https://doi.org/10.3892/or.2020.7583
MLA
Tetri, L. H., Kolla, V., Golden, R. L., Iyer, R., Croucher, J. L., Choi, J., Macfarland, S. P., Naraparaju, K., Guan, P., Nguyen, F., Gaonkar, K. S., Raman, P., Brodeur, G. M."RET receptor expression and interaction with TRK receptors in neuroblastomas". Oncology Reports 44.1 (2020): 263-272.
Chicago
Tetri, L. H., Kolla, V., Golden, R. L., Iyer, R., Croucher, J. L., Choi, J., Macfarland, S. P., Naraparaju, K., Guan, P., Nguyen, F., Gaonkar, K. S., Raman, P., Brodeur, G. M."RET receptor expression and interaction with TRK receptors in neuroblastomas". Oncology Reports 44, no. 1 (2020): 263-272. https://doi.org/10.3892/or.2020.7583