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A fluorinated peptide with high serum- and lipid-tolerence for the delivery of siRNA drugs to treat obesity and metabolic dysfunction
Biomaterials. 2022 Apr 28;285:121541. doi: 10.1016/j.biomaterials.2022.121541. Online ahead of print.ABSTRACTObesity is the major risk factor for metabolic diseases such as fatty liver, hyperlipidemia and insulin resistance. Beige fat has been recognized as a therapeutic target considering its great potential to burn energy. Since the evolutionary discovery of RNA interference and its utilization for gene knockdown in mammalian cells, a remarkable progress has been achieved in siRNA-based therapeutics. However, efficient delivery of siRNA into adipose tissues or differentiated adipocytes is challenging due to high lipid co...
Source: Biomaterials - May 9, 2022 Category: Materials Science Authors: Jin Qiu Qianqian Fan Sainan Xu Dongmei Wang Juntong Chen Sainan Wang Tianhui Hu Xinran Ma Yiyun Cheng Lingyan Xu Source Type: research

MMP-12 siRNA improves the homeostasis of the small intestine and metabolic dysfunction in high-fat diet feeding-induced obese mice
Biomaterials. 2021 Oct 11;278:121183. doi: 10.1016/j.biomaterials.2021.121183. Online ahead of print.ABSTRACTThe changes of small intestinal homeostasis have been recognized to contribute essentially to the obese development. However, the core small intestinal regulator which mediates over-nutrient impacts on the homeostasis of the small intestines remains elusive. Here, we identify the MMP-12 as such a responsive factor in mouse small intestines. Taking advantages of the nano delivery system, we demonstrate that small intestine-specific MMP-12 knockdown alleviates high-fat diet feeding-induced metabolic disorders and impr...
Source: Biomaterials - October 15, 2021 Category: Materials Science Authors: Mingming Song Shiyao Zhang Zixuan Tao Jianning Li Yujie Shi Yonghong Xiong Wenxiang Zhang Chang Liu Siyu Chen Source Type: research

Nanoparticle-based "Two-pronged" approach to regress atherosclerosis by simultaneous modulation of cholesterol influx and efflux.
Abstract Reduction of lipoprotein uptake by macrophages and stimulation of cholesterol efflux are two essential steps required for atherosclerotic plaque regression. We used the optimized mannose-functionalized dendrimeric nanoparticle (mDNP)-based platform for macrophage-specific delivery of therapeutics to simultaneously deliver SR-A siRNA (to reduce LDL uptake) and LXR ligand (LXR-L, to stimulate cholesterol efflux) - a novel "Two-pronged" approach to facilitate plaque regression. mDNP-mediated delivery of SR-A siRNA led to a significant reduction in SR-A expression with a corresponding decrease in uptake of ox...
Source: Biomaterials - August 14, 2020 Category: Materials Science Authors: He H, Wang J, Yannie PJ, Korzun WJ, Yang H, Ghosh S Tags: Biomaterials Source Type: research