Related Experiment Video
Updated: Mar 20, 2026
Author Spotlight: Innovative Cancer Therapies with Iron Oxide Nanoparticles for Glioblastoma Treatment
Published on: September 27, 2024
Nanoparticles for Targeting Intratumoral Hypoxia: Exploiting a Potential Weakness of Glioblastoma
Mihaela Aldea1, Ioan Alexandru Florian2, Gabriel Kacso3
1Department of Oncology, Iuliu Hatieganu University of Medicine and Pharmacy, 8 Victor Babes Str, Cluj-Napoca, Romania, 400012. mihaela.aldea1@gmail.com.
Abstract:
Extensive hypoxic regions are the daunting hallmark of glioblastoma, as they host aggressive stem-like cells, hinder drug delivery and shield cancer cells from the effects of radiotherapy. Nanotechnology could address most of these issues, as it employs nanoparticles (NPs) carrying drugs that selectively accumulate and achieve controlled drug release in tumor tissues. Methods overcoming the stiff interstitium and scarce vascularity within hypoxic zones include the incorporation of collagenases to degrade the collagen-rich tumor extracellular matrix, the use of multistage systems that progressively reduce NP size or of NP-loaded cells that display inherent hypoxia-targeting abilities. The unfavorable hypoxia-induced low pH could be converted into a therapeutical advantage by pH-responsive NPs or multilayer NPs, while overexpressed markers of hypoxic cells could be specifically targeted for an enhanced preferential drug delivery. Finally, promising new gene therapeutics could also be incorporated into nanovehicles, which could lead to silencing of hypoxia-specific genes that are overexpressed in cancer cells. In this review, we highlight NPs which have shown promising results in targeting cancer hypoxia and we discuss their applicability in glioblastoma, as well as possible limitations. Novel research directions in this field are also considered.
Insights
Nanotechnology offers solutions for glioblastoma (GBM) hypoxia by using nanoparticles (NPs) to target aggressive cancer cells and improve drug delivery. These advanced NPs overcome tumor barriers and exploit hypoxia for effective cancer treatment.
Area of Science:
- Biomedical Engineering
- Nanomedicine
- Oncology
Background:
- Glioblastoma (GBM) is characterized by extensive hypoxic regions.
- Hypoxia promotes aggressive cancer stem cells, hinders drug delivery, and confers radioresistance.
- Current treatments face challenges in effectively reaching and treating these hypoxic GBM areas.
Purpose of the Study:
- To review nanoparticles (NPs) designed to target and treat hypoxic regions in glioblastoma.
- To discuss the potential of nanotechnology to overcome challenges posed by GBM hypoxia.
- To explore novel research directions for nanomedicine in glioblastoma therapy.
Main Methods:
- Utilizing nanoparticles (NPs) for selective drug accumulation and controlled release in tumor tissues.
- Incorporating collagenases to degrade the tumor extracellular matrix, aiding NP penetration.
- Employing multistage systems or NP-loaded cells for enhanced targeting of hypoxic zones.
- Developing pH-responsive or multilayer NPs to leverage the acidic tumor microenvironment.
- Targeting overexpressed markers on hypoxic cells for preferential drug delivery.
- Integrating gene therapeutics into nanovehicles for silencing hypoxia-specific genes.
Main Results:
- Nanoparticles demonstrate promising results in targeting cancer hypoxia.
- Various nanotechnological strategies show potential for overcoming GBM-specific challenges like stiff interstitium and poor vascularity.
- pH-responsive and marker-targeted NPs offer enhanced drug delivery in hypoxic tumors.
- Gene therapeutics delivered via nanovehicles show promise for novel cancer gene silencing strategies.
Conclusions:
- Nanotechnology presents a viable strategy to address the challenges of glioblastoma hypoxia.
- Targeted NPs can improve drug delivery, overcome physical barriers, and exploit tumor microenvironment characteristics.
- Further research into novel nanocarriers and therapeutic payloads is crucial for advancing glioblastoma treatment.
More Related Videos
07:25Author Spotlight: Multimodal Imaging Strategies for Optimizing Drug Delivery and Early Detection in Glioblastoma Treatment
Published on: March 1, 2024
14:10Contrast Ultrasound Targeted Treatment of Gliomas in Mice via Drug-Bearing Nanoparticle Delivery and Microvascular Ablation
Published on: December 15, 2010
