PMID- 28666098 OWN - NLM STAT- MEDLINE DCOM- 20180430 LR - 20220330 IS - 1878-5905 (Electronic) IS - 0142-9612 (Linking) VI - 141 DP - 2017 Oct TI - Anti-RhoJ antibody functionalized Au@I nanoparticles as CT-guided tumor vessel-targeting radiosensitizers in patient-derived tumor xenograft model. PG - 1-12 LID - S0142-9612(17)30435-0 [pii] LID - 10.1016/j.biomaterials.2017.06.036 [doi] AB - The clinical success of radiotherapy is greatly hampered due to its intolerable off-target cytotoxicity induced by the high dose of radiation. Meanwhile, low dose of irradiation greatly potentiates the intratumoral angiogenesis, which promotes the local relapse and metastasis of tumor. Therefore, it is essential to reduce the irradiation dosage while inhibiting the tumor angiogenesis during radiotherapy. In this work, tumor vessel specific ultrafine Au@I nanoparticles (AIRA NPs) are fabricated and used as targeted radiosensitizers. Due to the presence of Au and iodine, these AIRA NPs exhibit superb X-ray attenuation for contrast-enhanced computed tomography (CT). Once injected, these AIRA NPs bind specifically to both newly formed tumor vessels in peri- and intratumoral regions and pre-existing tumor vessels. Upon radiation under CT guidance, AIRA NPs remarkably enhanced the killing efficacy against tumors in vivo with respect to radiation alone or anti-angiogenesis chemotherapy. Meanwhile, down-regulation of the level of circulating VEGF cytokine further indicates that our strategy can eradicate tumor without risking the recurrence of hypoxia and angiogenesis. Our demonstration provides a robust method of cancer therapy integrating good biocompatibility, high specificity and relapse-free manner alternative to traditional metal NPs enhanced radiotherapy. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Liu, Sen AU - Liu S AD - Institute of Materials Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University, Nanjing, Jiangsu, 210093, China. FAU - Li, Hui AU - Li H AD - Department of Radiology, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu, 210093, China. FAU - Xia, Luyao AU - Xia L AD - Institute of Materials Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University, Nanjing, Jiangsu, 210093, China. FAU - Xu, Peipei AU - Xu P AD - Department of Hematology, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu, 210093, China. FAU - Ding, Yin AU - Ding Y AD - State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, China. Electronic address: dingyin@nju.edu.cn. FAU - Huo, Da AU - Huo D AD - Institute of Materials Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University, Nanjing, Jiangsu, 210093, China. Electronic address: allicinhonda@163.com. FAU - Hu, Yong AU - Hu Y AD - Institute of Materials Engineering, Collaborative Innovation Center of Chemistry for Life Sciences, College of Engineering and Applied Sciences, Nanjing University, Nanjing, Jiangsu, 210093, China. Electronic address: hvyong@nju.edu.cn. LA - eng PT - Journal Article DEP - 20170623 PL - Netherlands TA - Biomaterials JT - Biomaterials JID - 8100316 RN - 0 (Immunoconjugates) RN - 0 (Radiation-Sensitizing Agents) RN - 7440-57-5 (Gold) RN - EC 3.6.1.- (RHOJ protein, human) RN - EC 3.6.5.2 (rho GTP-Binding Proteins) SB - IM MH - Cell Line, Tumor MH - Female MH - Gold/chemistry/*therapeutic use MH - Human Umbilical Vein Endothelial Cells MH - Humans MH - Immunoconjugates/chemistry/*therapeutic use MH - Metal Nanoparticles/chemistry/*therapeutic use MH - Middle Aged MH - Neoplasms/*blood supply/diagnostic imaging/*therapy MH - Neovascularization, Pathologic/diagnostic imaging/drug therapy/pathology MH - Radiation-Sensitizing Agents/chemistry/*therapeutic use MH - Tomography, X-Ray Computed/methods MH - Xenograft Model Antitumor Assays MH - rho GTP-Binding Proteins/*analysis OTO - NOTNLM OT - Angiogenesis OT - Anti-RhoJ antibody OT - Computed tomography OT - Nanoparticles OT - Radiosensitizer EDAT- 2017/07/01 06:00 MHDA- 2018/05/01 06:00 CRDT- 2017/07/01 06:00 PHST- 2017/01/03 00:00 [received] PHST- 2017/05/27 00:00 [revised] PHST- 2017/06/22 00:00 [accepted] PHST- 2017/07/01 06:00 [pubmed] PHST- 2018/05/01 06:00 [medline] PHST- 2017/07/01 06:00 [entrez] AID - S0142-9612(17)30435-0 [pii] AID - 10.1016/j.biomaterials.2017.06.036 [doi] PST - ppublish SO - Biomaterials. 2017 Oct;141:1-12. doi: 10.1016/j.biomaterials.2017.06.036. Epub 2017 Jun 23.