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Updated: May 7, 2026
Author Spotlight: Multimodal Imaging Strategies for Optimizing Drug Delivery and Early Detection in Glioblastoma Treatment
Published on: March 1, 2024
Nanoprobes visualizing gliomas by crossing the blood brain tumor barrier
1Key Laboratory of Smart Drug Delivery, Ministry of Education, School of Pharmacy, Fudan University 826 Zhangheng Rd., Shanghai, 201203, China.
Abstract:
The difficulty in delineating the glioma margins in brain is a major obstacle for its completed resection, which leads to the disproportionately high recurrence and mortality. Besides the fast exertion rate, inadequate sensitivity and non-targeting specificity, the main reason leading to failure of small molecular probes to define gliomas is their incapability to efficiently cross the blood brain tumor barrier (BBTB). Nanoprobes (NPs) show promise to precisely delineate the geographically irregular tumor margins due to their tunable size/circulation lifetime that maximize their passive intratumoral accumulation and their convenience for surface modification that increases the BBTB transcytosis efficacy, imaging sensitivity and receptor targeting specificity. In this work, the characteristics of the BBTB are addressed from biological and physiological perspectives, strategies are presented to deliver NPs across the BBTB, recent developments of NPs are reviewed for glioma visualization and finally the difficulty and promise for clinical translation of NPs are described. Overall, NPs hold great potential for glioma imaging and treatment by pre-surgically delineating tumor margins and intra-operatively guiding tumor excision.
Insights
Nanoprobe technology offers a promising solution for precisely defining brain glioma margins, overcoming limitations of current methods. These nanoprobes (NPs) can effectively cross the blood-brain tumor barrier (BBTB) for improved surgical guidance.
Area of Science:
- Biomedical Engineering
- Neuro-oncology
- Nanotechnology
Background:
- Glioma resection is hindered by difficulties in accurately delineating tumor margins, leading to high recurrence rates.
- Small molecular probes often fail due to limited sensitivity, specificity, and inability to cross the blood-brain tumor barrier (BBTB).
Purpose of the Study:
- To review the biological and physiological characteristics of the BBTB.
- To present strategies for delivering nanoprobes (NPs) across the BBTB.
- To explore recent advancements in NP development for glioma visualization and clinical translation.
Main Methods:
- Review of biological and physiological properties of the BBTB.
- Analysis of strategies for NP delivery across the BBTB.
- Survey of current NP developments for glioma imaging.
Main Results:
- Nanoprobes (NPs) offer tunable properties for enhanced passive accumulation and surface modification for increased BBTB transcytosis.
- NPs demonstrate potential for improved imaging sensitivity and receptor targeting specificity in gliomas.
- The review covers BBTB characteristics, NP delivery strategies, and recent NP developments for glioma visualization.
Conclusions:
- Nanoprobes (NPs) show significant potential for precise glioma margin delineation, aiding both pre-surgical planning and intra-operative guidance.
- Overcoming BBTB challenges with NPs can enhance glioma imaging and potentially improve treatment outcomes.
- Further development and clinical translation of NPs are crucial for realizing their full potential in neuro-oncology.
