Open Access

Neuregulin 1 enhances cell adhesion molecule L1 like expression levels and promotes malignancy in human glioma

  • Authors:
    • Wen‑Wen Lin
    • Guan‑Yong Ou
    • Jia‑Zhe Lin
    • San‑Jun Yi
    • Wei‑Cheng Yao
    • Hong‑Chao Pan
    • Wei‑Jiang Zhao
  • View Affiliations

  • Published online on: April 21, 2020     https://doi.org/10.3892/ol.2020.11548
  • Pages: 326-336
  • Copyright: © Lin et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Neural cell adhesion molecular L1‑like protein (CHL1) is a member of the cell adhesion molecule L1 family and serves an important role in the development and progression of tumors. The cytokine neuregulin 1 (NRG1) has been indicated in the tumorigenesis and promotion of metastasis through the modulation of L1. However, the roles of NRG1 in regulating CHL1 in glioma have not been elucidated. The present study investigated the protein expression levels and roles of CHL1 and the possible correlation between NRG1 and CHL1 protein expression levels in human gliomas, both in vivo and in vitro. Using immunohistochemistry coupled with a human glioma tissue microarray, it was demonstrated that the percentage of CHL1‑positive areas was the highest in grade II glioma tissues. Using immunofluorescence staining, a positive correlation was identified between the expression levels of CHL1 and proliferating cell nuclear antigen. In addition, CHL1 downregulation also resulted in increased senescence of U‑87 MG human glioblastoma cells. In vitro, administration of NRG1α induced a significant increase in CHL1 protein expression levels in human glioma SHG‑44 and U251 cells and in human glioblastoma U‑87 MG cells, whereas NRG1β failed to increase CHL1 expression levels in U251 cells. These findings were further confirmed by the downregulation of NRG1 expression levels using small interfering RNA treatment, which resulted in the reduction of CHL1 protein expression levels in U‑87 MG cells. These data indicate that NRG1 can regulate CHL1 protein expression levels in gliomas, that it is correlated with malignancy, and that NRG1 may contribute to malignancy by upregulating CHL1 protein expression levels in glioma/glioblastoma cells.

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July 2020
Volume 20 Issue 1

Print ISSN: 1792-1074
Online ISSN:1792-1082

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APA
Lin, W., Ou, G., Lin, J., Yi, S., Yao, W., Pan, H., & Zhao, W. (2020). Neuregulin 1 enhances cell adhesion molecule L1 like expression levels and promotes malignancy in human glioma. Oncology Letters, 20, 326-336. https://doi.org/10.3892/ol.2020.11548
MLA
Lin, W., Ou, G., Lin, J., Yi, S., Yao, W., Pan, H., Zhao, W."Neuregulin 1 enhances cell adhesion molecule L1 like expression levels and promotes malignancy in human glioma". Oncology Letters 20.1 (2020): 326-336.
Chicago
Lin, W., Ou, G., Lin, J., Yi, S., Yao, W., Pan, H., Zhao, W."Neuregulin 1 enhances cell adhesion molecule L1 like expression levels and promotes malignancy in human glioma". Oncology Letters 20, no. 1 (2020): 326-336. https://doi.org/10.3892/ol.2020.11548