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Novel cancer stem cell marker MVP enhances temozolomide-resistance in glioblastoma

Cited 5 time in Web of Science Cited 5 time in Scopus
Authors

Noh, Kum Hee; Lee, Song-Hee; Lee, Haeri; Jeong, Ae Jin; Kim, Kyu Oh; Shin, Hyun Mu; Kim, Hang-Rae; Park, Myung-Jin; Park, Jong Bae; Lee, Jiyoung; Ye, Sang-Kyu

Issue Date
2022-01
Publisher
Neoplasia Press
Citation
Translational Oncology, Vol.15 No.1, p. 101255
Abstract
The resistance of highly aggressive glioblastoma multiforme (GBM) to chemotherapy is a major clinical problem resulting in a poor prognosis. GBM contains a rare population of self-renewing cancer stem cells (CSCs) that proliferate, spurring the growth of new tumors, and evade chemotherapy. In cancer, major vault protein (MVP) is thought to contribute to drug resistance. However, the role of MVP as CSCs marker remains unknown and whether MVP could sensitize GBM cells to Temozolomide (TMZ) also is unclear. We found that sensitivity to TMZ was suppressed by significantly increasing the MVP expression in GBM cells with TMZ resistance. Also, MVP was associated with the expression of other multidrug-resistant proteins in tumorsphere of TMZ-resistant GBM cell, and was highly co-expressed with CSC markers in tumorsphere culture. On the other hands, knockdown of MVP resulted in reduced sphere formation and invasive capacity. Moreover, high expression of MVP was associated with tumor malignancy and survival rate in glioblastoma patients. Our study describes that MVP is a potentially novel maker for glioblastoma stem cells and may be useful as a target for preventing TMZ resistance in GBM patients.
ISSN
1936-5233
URI
https://hdl.handle.net/10371/202544
DOI
https://doi.org/10.1016/j.tranon.2021.101255
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