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Exosomes derived from immunogenically dying tumor cells as a versatile tool for vaccination against pancreatic cancer
Biomaterials. 2021 Dec 2;280:121306. doi: 10.1016/j.biomaterials.2021.121306. Online ahead of print.ABSTRACTDespite tremendous progress achieved in immunotherapy, many critical challenges in treating pancreatic ductal adenocarcinoma (PDAC) persist. Considering the poor vascularization of PDAC, after intramuscular administration exosomes can targeted deliver "cargos" to pancreatic tumors and bypass obstructions of the intrinsic overexpressed stroma through lymphatics. Herein, we propose a strategy to derive exosomes from immunogenically dying tumor cells and exploit their properties for several purposes, including antigen p...
Source: Biomaterials - December 24, 2021 Category: Materials Science Authors: Wenxi Zhou Xinli Chen Yu Zhou Si Shi Chen Liang Xianjun Yu Hongyi Chen Qin Guo Yiwen Zhang Peixin Liu Chao Li Yongchao Chu Yifan Luo Yu Wang Zheng Zhou Zhenhao Zhao Qinjun Chen Tao Sun Chen Jiang Source Type: research

Precision design of nanomedicines to restore gemcitabine chemosensitivity for personalized pancreatic ductal adenocarcinoma treatment.
Abstract Low chemosensitivity considerably restricts the therapeutic efficacy of gemcitabine (GEM) in pancreatic cancer treatment. Using immunohistochemical evaluation, we investigated that decreased expression of human equilibrative nucleoside transporter-1 (hENT1, which is the major GEM transporter across cell membranes) and increased expression of ribonucleotide reductase subunit 2 (RRM2, which decreases the cytotoxicity of GEM) was associated with low GEM chemosensitivity. To solve these problems, we employed a nanomedicine-based formulation of cationic liposomes for co-delivery of GEM along with siRNA targeti...
Source: Biomaterials - December 20, 2017 Category: Materials Science Authors: Zhao X, Wang X, Sun W, Cheng K, Qin H, Han X, Lin Y, Wang Y, Lang J, Zhao R, Zheng X, Zhao Y, Shi J, Hao J, Miao QR, Nie G, Ren H Tags: Biomaterials Source Type: research