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Source: Biomaterials

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Total 156 results found since Jan 2013.

Asynchronous blockade of PD-L1 and CD155 by polymeric nanoparticles inhibits triple-negative breast cancer progression and metastasis
Biomaterials. 2021 Jun 24;275:120988. doi: 10.1016/j.biomaterials.2021.120988. Online ahead of print.ABSTRACTPD-L1/PD-1 blockade therapy shows durable responses to triple-negative breast cancer (TNBC), but the response rate is low. CD155 promotes tumor metastasis intrinsically and modulates the immune response extrinsically as the ligand of DNAM-1 (costimulatory receptor) and TIGIT/CD96 (coinhibitory receptors). Herein, we verified that TNBC cells coexpressed PD-L1 and CD155. By examining the receptors of PD-L1 and CD155 on TNBC tumor-infiltrating lymphocytes (TILs) over time, we observed that PD-1 and DNAM-1 were upregula...
Source: Biomaterials - June 29, 2021 Category: Materials Science Authors: Chuanrong Chen Qianqian Guo Hao Fu Jian Yu Liting Wang Ying Sun Jiali Zhang Yourong Duan Source Type: research

M1 macrophage exosomes engineered to foster M1 polarization and target the IL-4 receptor inhibit tumor growth by reprogramming tumor-associated macrophages into M1-like macrophages
In this study, we harnessed M1 macrophage-derived exosomes engineered to foster M1 polarization and target IL4R for the inhibition of tumor growth by reprogramming TAMs into M1-like macrophages. M1 exosomes were transfected with NF-κB p50 siRNA and miR-511-3p to enhance M1 polarization and were surface-modified with IL4RPep-1, an IL4R-binding peptide, to target the IL4 receptor of TAMs (named IL4R-Exo(si/mi). IL4R-Exo(si/mi) were internalized and downregulated target gens in M2 macrophages and decreased M2 markers, while increasing M1 markers, more efficiently compared with untargeted and control peptide-labeled exosomes ...
Source: Biomaterials - September 24, 2021 Category: Materials Science Authors: Gowri Rangaswamy Gunassekaran Sri Murugan Poongkavithai Vadevoo Moon-Chang Baek Byungheon Lee 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

Corrigendum to "Co-delivery of HIF1 α siRNA and gemcitabine via biocompatible lipid-polymer hybrid nanoparticles for effective treatment of pancreatic cancer" Biomaterials 46 (2015) 13-25
Biomaterials. 2021 Dec 7;280:121296. doi: 10.1016/j.biomaterials.2021.121296. Online ahead of print.NO ABSTRACTPMID:34890971 | DOI:10.1016/j.biomaterials.2021.121296
Source: Biomaterials - December 10, 2021 Category: Materials Science Authors: Xiao Zhao Feng Li Yiye Li Hai Wang He Ren Jing Chen Guangjun Nie Jihui Hao Source Type: research

Dual targeted delivery of statins and nucleic acids by chitosan-based nanoparticles for enhanced antiatherosclerotic efficacy
Biomaterials. 2021 Dec 15;280:121324. doi: 10.1016/j.biomaterials.2021.121324. Online ahead of print.ABSTRACTCardiovascular disease caused by atherosclerosis is a leading cause of morbidity and mortality worldwide. Owing to the synergistic regulation of cholesterol metabolism and lesion inflammation, the simultaneous administration of statins and nucleic acids is expected to alleviate atherosclerosis. In this work, we prepared atorvastatin- and galactose-modified trimethyl chitosan nanoparticles (GTANPs) with dual targeting to hepatocytes and lesional macrophages for encapsulating Baf60a siRNA (siBaf60a) and anti-miR-33 pD...
Source: Biomaterials - December 21, 2021 Category: Materials Science Authors: Ting Jiang Lu Xu Mengxin Zhao Fei Kong Xinrong Lu Cui Tang Chunhua Yin Source Type: research

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

Versatile fully biodegradable dendritic nanotherapeutics
Biomaterials. 2022 Jan 3;281:121356. doi: 10.1016/j.biomaterials.2021.121356. Online ahead of print.ABSTRACTThe repeated administration of non-degradable dendrimers can lead to toxicity due to their bioaccumulation. Furthermore, in drug delivery applications, carrier stability can result in low biological performance due to insufficient intracellular cargo release. A novel family of versatile, biosafe, water-soluble, and fully biodegradable PEG-dendritic nanosystems is proposed, which overcomes the limitations of the most used dendrimers. Their novelty relies on the full and adjustable degradability thanks to the presence ...
Source: Biomaterials - January 15, 2022 Category: Materials Science Authors: Victoria Leiro Ana Patr ícia Spencer Nat ália Magalhães Ana Paula P êgo Source Type: research

Using computational methods to design patient-specific electrospun cardiac patches for pediatric heart failure
Biomaterials. 2022 Feb 18;283:121421. doi: 10.1016/j.biomaterials.2022.121421. Online ahead of print.ABSTRACTAutologous cardiac cell therapy is a promising treatment for combating the right ventricular heart failure (RVHF) that can occur in patients with congenital heart disease (CHD). However, autologous cell therapies suffer from low cell retention following injection and patient-to-patient variability in cell quality. Here, we demonstrate how computational methods can be used to identify mechanisms of cardiac-derived c-Kit+ cell (CPC) reparative capacity and how biomaterials can be designed to improve cardiac patch perf...
Source: Biomaterials - February 26, 2022 Category: Materials Science Authors: Benjamin W Streeter Milton E Brown Preety Shakya Hyun-Ji Park Jichuan Qiu Younan Xia Michael E Davis Source Type: research

ATP-exhausted nanocomplexes for intratumoral metabolic intervention and photoimmunotherapy
Biomaterials. 2022 Mar 29;284:121503. doi: 10.1016/j.biomaterials.2022.121503. Online ahead of print.ABSTRACTTumor cells reprogram the metabolic pathways to acquire abundant nutrients and sustain malignant proliferation. This fierce metabolic competition in tumor ecosystem has been uncovered to be associated with tumor microenvironmental immunosuppression. Here we develop an adenosine triphosphate (ATP)-exhausted nanocomplex (IR@ZIF-RGD) to intervene in tumor energy metabolism and regulate tumor immune microenvironment. IR@ZIF-RGD could effectively deplete intracellular ATP and inhibit ATP synthesis by ATP-responsive ZIF-9...
Source: Biomaterials - April 3, 2022 Category: Materials Science Authors: Mian Yu Weiwei Zeng Yaqi Ouyang Shu Liang Yunfei Yi Huisong Hao Jiayin Yu Yang Liu Yichu Nie Tianqi Wang Yang Deng Meiying Wu Source Type: research