ArticleAsian Pacific journal of cancer prevention : APJCP2021
Combination Therapy with PIK3R3-siRNA and EGFR-TKI Erlotinib Synergistically Suppresses Glioblastoma Cell Growth In Vitro.
Article in Asian Pacific journal of cancer prevention : APJCP, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 10 citations in OpenAlex.
- Overcoming ABT-737 resistance in triple-negative breast cancer: C-phycocyanin-mediated myeloid cell leukemia-1 downregulation enhances apoptotic sensitivity.Molecular biology reports · 2026Article
- Locoregional Delivery of miRNAs for Glioblastoma Treatment: A Systematic Review of Advances in Delivery Systems.Pharmaceutics · 2026Review
- Application of EGFR-TKIs in brain tumors, a breakthrough in future?Journal of translational medicine · 2025Review
- OncogenicMedComm · 2024Article
- Small Molecule Tyrosine Kinase Inhibitors (TKIs) for Glioblastoma Treatment.International journal of molecular sciences · 2024Review
- Luteolin enhances erlotinib's cell proliferation inhibitory and apoptotic effects in glioblastoma cell lines.Frontiers in pharmacology · 2022Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
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Abstract
backgroundUp-regulation of PIK3R3 (Phosphoinositide-3-Kinase Regulatory Subunit 3), the regulatory subunit of PI3K is correlated with the drug resistance of the glioblastoma cells. In the present study, the effect of PIK3R3 siRNA on erlotinib sensitivity of the U373-MG glioblastoma cells was explored.
methodsAfter PIK3R3 siRNA transfection, the expression of PIK3R3 mRNA was measured using RT-qPCR. Trypan blue exclusion assay was used to explore the effect of PIK3R3 siRNA on cell proliferation. The effects of PIK3R3 siRNA and erlotinib, alone and in combination, on cell survival and apoptosis were measured using MTT assay and ELISA cell death assay, respectively.
resultsOur data showed that PIK3R3 siRNA markedly suppressed the expression of PIK3R3 in a time dependent way, inhibited the proliferation of the U373-MG cells and triggered apoptosis (p <0.05, relative to blank control). Pretreatment with PIK3R3 siRNA synergistically decreased the cell survival rate and lowered the IC50 of erlotinib. Moreover, PIK3R3 siRNA markedly enhanced the apoptotic effect of erlotinib.
conclusionsOur data propose that suppression of PIK3R3 can effectively triggers apoptosis and enhances the sensitivity of the glioblastoma cells to EGFR-TKI erlotinib. Thus, PIK3R3 can be a potential therapeutic target in glioblastoma patients.<br />.
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