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An optimized ionizable cationic lipid for brain tumor-targeted siRNA delivery and glioblastoma immunotherapy
Biomaterials. 2022 Jun 22;287:121645. doi: 10.1016/j.biomaterials.2022.121645. Online ahead of print.ABSTRACTGlioblastoma multiforme (GBM) is the most common and aggressive primary brain tumor with a high mortality rate. Immunotherapy has achieved promising clinical results in multiple cancers, but shows unsatisfactory outcome in GBM patients, and poor drug delivery across the blood-brain barrier (BBB) is believed to be one of the main limitations that hinder the therapeutic efficacy of drugs. Herein, a new cationic lipid nanoparticle (LNP) that can efficiently deliver siRNA across BBB and target mouse brain is prepared fo...
Source: Biomaterials - July 2, 2022 Category: Materials Science Authors: Shuhan Liu Ji Liu Haisong Li Kuirong Mao Haorui Wang Xiandi Meng Jialiang Wang Chenxi Wu Hongmei Chen Xin Wang Xiuxiu Cong Yue Hou Ye Wang Ming Wang Yong-Guang Yang Tianmeng Sun Source Type: research

SHMT1 siRNA-Loaded hyperosmotic nanochains for blood-brain/tumor barrier post-transmigration therapy
Biomaterials. 2021 Dec 30;281:121359. doi: 10.1016/j.biomaterials.2021.121359. Online ahead of print.ABSTRACTThe near-perivascular accumulation in solid tumors and short-lived span in circulation, derails even the most competent nanoparticles (NPs) from achieving their maximum therapeutic potential. Moreover, delivering them across the blood brain/tumor barrier (BBB/BTB) is further challenging to sought anticancer effect. To address these key challenges, we designed a linearly aligned nucleic acid-complexed polydixylitol-based polymeric nanochains (X-NCs), with inherent hyperosmotic properties enabling transmigration of th...
Source: Biomaterials - January 8, 2022 Category: Materials Science Authors: Shambhavi Pandey Myung Chul Lee Jae Woon Lim Yun-Hoon Choung Kyoung-Je Jang Sang Bae Park Jae Eun Kim Jong Hoon Chung Pankaj Garg Source Type: research

Single-component self-assembled RNAi nanoparticles functionalized with tumor-targeting iNGR delivering abundant siRNA for efficient glioma therapy.
In this study, a novel glioma-targeting RNAi system was developed. Single-component RNAi nanospheres were tactfully self-assembled in vitro, combining the carrier and cargo as a whole. An artificially synthesized polycation (pOEI) with redox-sensitive disulfides in structure condensed the RNAi nanospheres into more compacted nanoparticles. Then a novelly designed tumor-homing and penetrating cyclopeptide iNGR was further modified on the surface. iNGR modified RNAi nanoparticles demonstrated significantly enhanced accumulation in glioma site, remaining stable in circulation until the release of naked RNAi nanospheres were ...
Source: Biomaterials - April 24, 2015 Category: Materials Science Authors: An S, Jiang X, Shi J, He X, Li J, Guo Y, Zhang Y, Ma H, Lu Y, Jiang C Tags: Biomaterials Source Type: research

Targeting glucose uptake with siRNA-based nanomedicine for cancer therapy.
In this study, we report an effective strategy for cancer therapy through targeting glucose transporter 3 (GLUT3) with siRNA-based nanomedicine to simultaneously inhibit the self-renewal of glioma stem cells and bulk glioma cells in a glucose restricted tumor micro-environment. We have demonstrated that cationic lipid-assisted poly(ethylene glycol)-b-poly(d,l-lactide) (PEG-PLA) nanoparticles can efficiently deliver siRNA into U87MG and U251 glioma stem cells and bulk glioma cells. Nanoparticles carrying specific siRNA targeting GLUT3 (NPsiGLUT3) were able to significantly reduce the expression of GLUT3 in glioma stem cells...
Source: Biomaterials - March 20, 2015 Category: Materials Science Authors: Xu CF, Liu Y, Shen S, Zhu YH, Wang J Tags: Biomaterials Source Type: research