4.7 Article

Smart Nanofiber Mesh with Locally Sustained Drug Release Enabled Synergistic Combination Therapy for Glioblastoma

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NANOMATERIALS
卷 13, 期 3, 页码 -

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MDPI
DOI: 10.3390/nano13030414

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glioblastoma; combination therapy; synergistic effect; TMZ; 17AAG; radiation therapy; radiosensitization; nanofiber

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This study proposes a new treatment model for glioblastoma (GBM) using a safe and non-toxic drug-releasing composite Nanofiber mesh (NFM). The NFM combines chemotherapy, molecular targeted therapy, and radiotherapy in a highly simultaneous manner. The combination of temozolomide (TMZ) and 17-allylamino-17-demethoxygeldanamycin (17AAG) in the NFM showed synergistic cytotoxicity and radiation-sensitization effects. The NFM has the potential to address the challenge of high recurrence of GBM post-operatively due to its sustained drug release.
This study aims to propose a new treatment model for glioblastoma (GBM). The combination of chemotherapy, molecular targeted therapy and radiotherapy has been achieved in a highly simultaneous manner through the application of a safe, non-toxic, locally sustained drug-releasing composite Nanofiber mesh (NFM). The NFM consisted of biodegradable poly(epsilon-caprolactone) with temozolomide (TMZ) and 17-allylamino-17-demethoxygeldanamycin (17AAG), which was used in radiation treatment. TMZ and 17AAG combination showed a synergistic cytotoxicity effect in the T98G cell model. TMZ and 17AAG induced a radiation-sensitization effect, respectively. The NFM containing 17AAG or TMZ, known as 17AAG-NFM and TMZ-NFM, enabled cumulative drug release of 34.1% and 39.7% within 35 days. Moreover, 17AAG+TMZ-NFM containing both drugs revealed a synergistic effect in relation to the NFM of a single agent. When combined with radiation, 17AAG+TMZ-NFM induced in an extremely powerful cytotoxic effect. These results confirmed the application of NFM can simultaneously allow multiple treatments to T98G cells. Each modality achieved a significant synergistic effect with the other, leading to a cascading amplification of the therapeutic effect. Due to the superior advantage of sustained drug release over a long period of time, NFM has the promise of clinically addressing the challenge of high recurrence of GBM post-operatively.

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