PMID- 32129011 OWN - NLM STAT- MEDLINE DCOM- 20210514 LR - 20210514 IS - 2192-2659 (Electronic) IS - 2192-2640 (Linking) VI - 9 IP - 7 DP - 2020 Apr TI - A Needle-Type Microrobot for Targeted Drug Delivery by Affixing to a Microtissue. PG - e1901697 LID - 10.1002/adhm.201901697 [doi] AB - A needle-type microrobot (MR) for targeted drug delivery is developed to stably deliver drugs to a target microtissue (MT) for a given period time without the need for an external force after affixing. The MRs are fabricatedby 3D laser lithography and nickel (Ni)/titanium oxide (TiO(2) ) layers are coated by physical vapor deposition. The translational velocity of the MR is 714 microm s(-1) at 20 mT and affixed to the target MT under the control of a rotating magnetic field. The manipulability of the MR is shown by using both manual and automatic controls. Finally, drug release from the paclitaxel-loaded MR is characterized to determine the efficiency of targeted drug delivery. This study demonstrates the utility of the proposed needle-type MR for targeted drug delivery to MT with various flow rates in vitro physiological fluidic environments. CI - (c) 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Lee, Seungmin AU - Lee S AD - Department of Robotics Engineering, DGIST-ETH Microrobot Research Center, Daegu-Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno jungang-daero, Hyeonpung-eup, Dalseong-Gun, Daegu, 42988, Republic of Korea. FAU - Kim, Jin-Young AU - Kim JY AD - Department of Robotics Engineering, DGIST-ETH Microrobot Research Center, Daegu-Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno jungang-daero, Hyeonpung-eup, Dalseong-Gun, Daegu, 42988, Republic of Korea. FAU - Kim, Junyoung AU - Kim J AD - Department of Robotics Engineering, DGIST-ETH Microrobot Research Center, Daegu-Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno jungang-daero, Hyeonpung-eup, Dalseong-Gun, Daegu, 42988, Republic of Korea. FAU - Hoshiar, Ali Kafash AU - Hoshiar AK AD - School of Computer Science and Electronic Engineering, University of Essex, Colchester, CO4 3SQ, UK. FAU - Park, Jongeon AU - Park J AD - Department of Robotics Engineering, DGIST-ETH Microrobot Research Center, Daegu-Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno jungang-daero, Hyeonpung-eup, Dalseong-Gun, Daegu, 42988, Republic of Korea. FAU - Lee, Sunkey AU - Lee S AD - Department of Robotics Engineering, DGIST-ETH Microrobot Research Center, Daegu-Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno jungang-daero, Hyeonpung-eup, Dalseong-Gun, Daegu, 42988, Republic of Korea. FAU - Kim, Jonghyun AU - Kim J AD - School of Mechanical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do, 16419, South Korea. FAU - Pane, Salvador AU - Pane S AD - Institute of Robotics and Intelligent Systems, ETH Zurich, Zurich, CH-8092, Switzerland. FAU - Nelson, Bradley J AU - Nelson BJ AD - Institute of Robotics and Intelligent Systems, ETH Zurich, Zurich, CH-8092, Switzerland. FAU - Choi, Hongsoo AU - Choi H AUID- ORCID: 0000-0003-3613-2833 AD - Department of Robotics Engineering, DGIST-ETH Microrobot Research Center, Daegu-Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno jungang-daero, Hyeonpung-eup, Dalseong-Gun, Daegu, 42988, Republic of Korea. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200303 PL - Germany TA - Adv Healthc Mater JT - Advanced healthcare materials JID - 101581613 RN - 0 (Pharmaceutical Preparations) RN - P88XT4IS4D (Paclitaxel) SB - IM MH - *Drug Delivery Systems MH - Drug Liberation MH - Needles MH - Paclitaxel MH - *Pharmaceutical Preparations OTO - NOTNLM OT - drug delivery OT - fixation OT - magnetic manipulation OT - microrobots OT - targeted drug delivery EDAT- 2020/03/05 06:00 MHDA- 2021/05/15 06:00 CRDT- 2020/03/05 06:00 PHST- 2019/11/26 00:00 [received] PHST- 2020/02/10 00:00 [revised] PHST- 2020/03/05 06:00 [pubmed] PHST- 2021/05/15 06:00 [medline] PHST- 2020/03/05 06:00 [entrez] AID - 10.1002/adhm.201901697 [doi] PST - ppublish SO - Adv Healthc Mater. 2020 Apr;9(7):e1901697. doi: 10.1002/adhm.201901697. Epub 2020 Mar 3.