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polymer nanoparticles as adjuvants in cancer immunotherapy

Nano Research 2018年第11期11卷 5769-5786页

作者： Shengxian Li Xiangru Feng Jixue Wang Liang He Chunxi Wang Jianxun Ding Xuesi Chen Key Laboratory of polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Department of Urology The First Hospital of Jilin University Changchun 130021 China

Immunotherapy is a promising strategy to inhibit cancer progression via activation of the immune system. In immunotherapy, adjuvants as immunologic stimulants or delivery systems play a critical role in inducing the antitumor immune response and decreasing the side effects of immune stimulants. polymer nanoparticles have attracted increasing attention as an indispensable component of immunotherapy, owing to their favorable properties, such as excellent biocompatibility and biodegradability, flexible size, high activity as immune stimulants, large surface area for binding multivalent immune ligands, and high loading capacity for immune-related components. In cancer immunotherapy, polymer nanoparticles can protect cargo from the surrounding milieu, deliver the antigens and immunostimulatory molecules to antigen-presenting cells, or stimulate robust T cell response. This review summarizes the current advancements in polymer nanoparticle adjuvants for cancer immunotherapy and predicts their prospects in fundamental and clinical studies.

关键词： polymer nanoparticle adjuvant drug delivery immunotherapy cancer treatment

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Injectable polymeric nanoparticle hydrogel system for long-term anti-inflammatory effect to treat osteoarthritis

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Bioactive Materials 2022年第1期7卷 14-25页

作者： Bo-Bae Seo Youngjoong Kwon Jun Kim Ki Hyun Hong Sung-Eun Kim Hae-Ryong Song Young-Min Kim Soo-Chang Song Center for Biomaterials Korea Institute of Science&TechnologySeoul02792South Korea Division of Bio-Medical Science and Technology KIST SchoolKorea University of Science and TechnologySeoul02792South Korea Department of Orthopedic Surgery and Rare Diseases Institute Korea University Medical College Guro HospitalSeoul08308South Korea

Treatment of osteoarthritis(OA)by administration of corticosteroids is a commonly used method in clinics using anti-inflammatory *** administration or intra-articular injection of corticosteroids can reduce the pain and progress of cartilage degeneration,but they are usually insufficient to show local and long-term anti-inflammatory effects because of their fast clearance in the *** this study,we suggest an injectable anti-OA drug depot system for sustained drug release that provides long-term effective therapeutic *** poly(organophosphazene),which has temperature-dependent nanoparticle forming and sol-gel transition behaviors when dissolved in aqueous solution,was synthesized for triamcinolone acetonide(TCA)*** hydrophobic parts of the polymer can interact with hydrophobic parts of the TCA,the TCA was encapsulated into the self-assembled polymeric *** TCA-encapsulated polymeric nanoparticles(TePNs)were well dispersed in an aqueous solution below room temperature so that they can be easily injected as a sol state into an intra-articular ***,the TePNs solution transforms immediately to a viscose 3D hydrogel like a synovial fluid in the intra-articular region via the conducted body *** in vitro TCA release study showed sustained TCA release for six ***-time injection of the TePN hydrogel system in an early stage of OA-induced rat model showed a great inhibition effect against further OA *** OA-induced knees completely recovered as a healthy cartilage without any abnormal symptoms.

关键词： Thermosensitive hydrogel Triamcinolone acetonide polymer nanoparticle Osteoarthritis Sustained release

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