Charge‐Reversal Polymer Nano‐modulators for Photodynamic Immunotherapy of Cancer
作者:Shasha He、Jingchao Li、Penghui Cheng、Ziling Zeng、Chi Zhang、Hongwei Duan、Kanyi Pu
DOI:10.1002/anie.202106392
日期:2021.8.23
has been rarely exploited for cancerimmunotherapy. We report a charge-reversal polymer nano-modulator (SPDMCN) activated by tumor microenvironment (TME) for photodynamicimmunotherapy of cancer. SPDMCN is constructed by conjugating an immunomodulator (demethylcantharidin, DMC) to the side chains of a photodynamicpolymer via an acid-liable linker. The negative charge of SPDMCN ensures its high stability
纳米医学可以调节细胞毒性 T 淋巴细胞 (CTLs) 和抑制性调节性 T 淋巴细胞 (Tregs) 之间的平衡,然而它们很少被用于癌症免疫治疗。我们报告了一种由肿瘤微环境 (TME) 激活的电荷反转聚合物纳米调节剂 (SPDMC N),用于癌症的光动力免疫治疗。SPDMC N 是通过将免疫调节剂(去甲基斑蝥素,DMC)通过耐酸接头与光动力聚合物的侧链结合来构建的。SPDMC N的负电荷保证了其血液循环的高度稳定性和理想的肿瘤堆积;暴露于酸性 TME 会将其表面电荷反转为正电荷,从而增强肿瘤渗透并局部释放 DMC。在近红外光照射下,SPDMC N 产生单线态氧以消融肿瘤并促进树突状细胞的成熟。释放的 DMC 抑制蛋白磷酸酶 2 (PP2A) 活性并降低 Treg 分化。这种组合作用导致 TME 中 CTL/Treg 比率的急剧增加,并有效抑制活小鼠的原发性和远处肿瘤。
Synthesis and Properties of Two Cationic Narrow Band Gap Conjugated Polyelectrolytes
作者:Zachary B. Henson、Yuan Zhang、Thuc-Quyen Nguyen、Jung Hwa Seo、Guillermo C. Bazan
DOI:10.1021/ja400140d
日期:2013.3.20
We report the design, synthesis, and optical and electronic properties of two novel narrow band gap conjugated polyelectrolytes (NBGCPEs) based on a poly[2,6-(4,4-bis-alkyl-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] donor/acceptor backbone. Comparison with the properties of the neutral precursormaterial shows that the ionic component in these cationic NBGCPEs leads to
我们报告了两种基于聚[2,6-(4,4-双-烷基-4H-环戊二烯)[2,1-b] 的新型窄带隙共轭聚电解质 (NBGCPE) 的设计、合成以及光学和电子特性。 ;3,4-b']二噻吩)-alt-4,7-(2,1,3-苯并噻二唑)]供体/受体骨架。与中性前体材料的特性进行比较表明,这些阳离子 NBGCPE 中的离子组分导致吸收光谱的红移和聚合物电子能级的改变。HOMO 和 LUMO 的能量都降低,净效应取决于反离子的选择,即溴化物与四(1-咪唑基)硼酸盐。此外,我们意外地在薄膜晶体管中发现了 n 型传输,这与在具有等电子骨架的中性系统中广泛研究的 p 型传输相反。
Semiconducting Polymer Nano‐regulators with Cascading Activation for Photodynamic Cancer Immunotherapy
作者:Shasha He、Jing Liu、Chi Zhang、Jun Wang、Kanyi Pu
DOI:10.1002/anie.202116669
日期:2022.3
A semiconducting polymer nano-regulator (SPNT) with cascading intratumoral activation for apoptotic biomarker-induced indoleamine 2,3-dioxygenase (IDO) inhibition is reported for combinational photodynamic immunotherapy of cancer.
据报道,一种具有级联肿瘤内激活作用的半导体聚合物纳米调节剂 (SPN T ) 可用于细胞凋亡生物标志物诱导的吲哚胺 2,3-双加氧酶 (IDO) 抑制,用于癌症的联合光动力免疫治疗。
Activatable Polymeric Nanoprobe for Near‐Infrared Fluorescence and Photoacoustic Imaging of T Lymphocytes
作者:Yan Zhang、Shasha He、Wan Chen、Yinghua Liu、Xuefei Zhang、Qingqing Miao、Kanyi Pu
DOI:10.1002/anie.202015116
日期:2021.3.8
Development of real‐time non‐invasive imaging probes to assess infiltration and activation of cytotoxic T cells (CTLs) is critical to predict the efficacy of cancer immunotherapy, which however remains challenging. Reported here is an activatable semiconducting polymer nanoprobe (SPNP) for near‐infrared fluorescence (NIRF) and photoacoustic (PA) imaging of a biomarker (granzyme B) associated with activation