PMID- 27592863 OWN - NLM STAT- MEDLINE DCOM- 20180129 LR - 20180129 IS - 1613-6829 (Electronic) IS - 1613-6810 (Linking) VI - 12 IP - 47 DP - 2016 Dec TI - Organic Nanoparticles with Aggregation-Induced Emission for Bone Marrow Stromal Cell Tracking in a Rat PTI Model. PG - 6576-6585 LID - 10.1002/smll.201601630 [doi] AB - Stem-cell based therapy is an emerging therapeutic approach for ischemic stroke treatment. Bone marrow stromal cells (BMSCs) are in common use as a cell source for stem cell therapy and show promising therapeutic outcomes for stroke treatment. One challenge is to develop a reliable tracking strategy to monitor the fate of BMSCs and assess their therapeutic effects in order to improve the success rate of such treatment. Herein, TPEEP, a fluorogen with aggregation-induced emission characteristics and near-infrared emission are designed and synthesized and further fabricated into organic nanoparticles (NPs). The obtained NPs show high fluorescence quantum yield, low cytotoxicity with good physical and photostability, which display excellent tracking performance of BMSCs in vitro and in vivo. Using a rat photothrombotic ischemia model as an example, the NP-labeled BMSCs are able to migrate to the stroke lesion site to yield bright red fluorescence. Immunofluorescence staining shows that the NP labeling does not affect the normal function of BMSCs, proving their good biocompatibility in vivo. These merits make TPEEP NP a potential cell tracker to evaluate the fate of BMSCs in cell therapy. CI - (c) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Cai, Xiaolei AU - Cai X AD - Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585. AD - NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, 28 Medical Drive, #05-01, Singapore, 117456. FAU - Zhang, Chong-Jing AU - Zhang CJ AD - Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585. FAU - Ting Wei Lim, Frances AU - Ting Wei Lim F AD - Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, Singapore, 117456. FAU - Chan, Su Jing AU - Chan SJ AD - Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, 2129, USA. FAU - Bandla, Aishwarya AU - Bandla A AD - Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, Singapore, 117456. FAU - Chuan, Chan Kim AU - Chuan CK AD - Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, Singapore, 117456. FAU - Hu, Fang AU - Hu F AD - Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585. FAU - Xu, Shidang AU - Xu S AD - Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585. FAU - Thakor, Nitish V AU - Thakor NV AD - Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, Singapore, 117456. FAU - Liao, Lun-De AU - Liao LD AD - Singapore Institute for Neurotechnology (SINAPSE), National University of Singapore, 28 Medical Drive, Singapore, 117456. AD - Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, 35 Keyan Road, Zhunan Town, Miaoli County, 35053, Taiwan. FAU - Liu, Bin AU - Liu B AD - Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585. LA - eng PT - Journal Article DEP - 20160904 PL - Germany TA - Small JT - Small (Weinheim an der Bergstrasse, Germany) JID - 101235338 RN - 0 (Fluorescent Dyes) SB - IM MH - Animals MH - Bone Marrow Cells/metabolism MH - Brain Ischemia/*diagnostic imaging MH - Disease Models, Animal MH - Fluorescent Dyes/chemical synthesis/*chemistry MH - Nanoparticles/*chemistry MH - Rats OTO - NOTNLM OT - aggregation-induced emission (AIE) OT - bone marrow stromal cells OT - cell tracking OT - nanoparticles OT - photothrombotic ischemia EDAT- 2016/09/07 06:00 MHDA- 2018/01/30 06:00 CRDT- 2016/09/06 06:00 PHST- 2016/05/13 00:00 [received] PHST- 2016/06/24 00:00 [revised] PHST- 2016/09/07 06:00 [pubmed] PHST- 2018/01/30 06:00 [medline] PHST- 2016/09/06 06:00 [entrez] AID - 10.1002/smll.201601630 [doi] PST - ppublish SO - Small. 2016 Dec;12(47):6576-6585. doi: 10.1002/smll.201601630. Epub 2016 Sep 4.