Sequential Targeting in Crosslinking Nanotheranostics for Tackling the Multibarriers of Brain Tumors. Issue 14 (20th February 2020)

• Record Type: Journal Article
• Authors: Wu, Hao; Lu, Hongwei; Xiao, Wenwu; Yang, Jinfan; Du, Hongxu; Shen, Yingbin; Qu, Haijing; Jia, Bei; Manna, Suman K.; Ramachandran, Mythili; Xue, Xiangdong; Ma, Zhao; Xu, Xiaobao; Wang, Zhongling; He, Yixuan; Lam, Kit S.; Zawadzki, Robert J.; Li, Yuanpei; Lin, Tzu‐Yin
• Is Part Of: Advanced materials. Volume 32:Issue 14(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-02-20
• Subjects: blood–brain barrier -- diffuse intrinsic pontine glioma -- pH response -- sequential targeting; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201903759
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract: The efficacy of therapeutics for brain tumors is seriously hampered by multiple barriers to drug delivery, including severe destabilizing effects in the blood circulation, the blood–brain barrier/blood–brain tumor barrier (BBB/BBTB), and limited tumor uptake. Here, a sequential targeting in crosslinking (STICK) nanodelivery strategy is presented to circumvent these important physiological barriers to improve drug delivery to brain tumors. STICK nanoparticles (STICK‐NPs) can sequentially target BBB/BBTB and brain tumor cells with surface maltobionic acid (MA) and 4‐carboxyphenylboronic acid (CBA), respectively, and simultaneously enhance nanoparticle stability with pH‐responsive crosslinkages formed by MA and CBA in situ. STICK‐NPs exhibit prolonged circulation time (17‐fold higher area under curve) than the free agent, allowing increased opportunities to transpass the BBB/BBTB via glucose‐transporter‐mediated transcytosis by MA. The tumor acidic environment then triggers the transformation of the STICK‐NPs into smaller nanoparticles and reveals a secondary CBA targeting moiety for deep tumor penetration and enhanced uptake in tumor cells. STICK‐NPs significantly inhibit tumor growth and prolong the survival time with limited toxicity in mice with aggressive and chemoresistant diffuse intrinsic pontine glioma. This formulation tackles multiple physiological barriers on‐demand with a simple and smart STICK design. Therefore, these features allow STICK‐NPs to unleash the potential of brain tumor therapeutics to improve their treatment efficacy. Abstract : A novel sequential targeting in crosslinking (STICK) nanodelivery strategy is developed to circumvent multiple physiological barriers to improve drug delivery to brain tumors, utilizing an "interlocking stratagem." This STICK nanoplatform significantly inhibits tumor growth and prolongs the survival time with limited toxicity in mice with aggressive, intracranial brain tumors. This strategy can potentially enhance the clinical outcome of brain tumor patients.