PMID- 25184661 OWN - NLM STAT- MEDLINE DCOM- 20160515 LR - 20181202 IS - 2040-3372 (Electronic) IS - 2040-3364 (Linking) VI - 6 IP - 21 DP - 2014 Nov 7 TI - PEGylated nickel carbide nanocrystals as efficient near-infrared laser induced photothermal therapy for treatment of cancer cells in vivo. PG - 12591-600 LID - 10.1039/c4nr03727h [doi] AB - Photothermal therapy has attracted significant attention as a minimally invasive therapy methodology. In this work, we report PEGylated nickel carbide nanocrystals (Ni3C NCs) as an efficient photothermal agent for the first time. The nanoparticles exhibit a broad absorption from the visible to the near-infrared regions and a rapid rise in temperature when irradiated by an 808 nm laser even at a concentration of 100 mug mL(-1). In vitro and in vivo cytotoxicity assays demonstrate they have good biocompatibility, which lays an important foundation for their biological application. In vitro studies reveal the efficient damage of cancer cells by the exposure of 808 nm laser with a power density of 0.50 W cm(-2). Furthermore, hematoxylin and eosin (H & E) and terminal deoxynucleotidyl transferase biotin-dUTP nick-end labeling (TUNEL) staining of tumor slices confirmed the obvious destruction of cancer cells in vivo by an 808 nm laser (0.50 W cm(-2)) after only a 5 min application. Our work may open up a new application domain for transition metal carbides for biomedicine. FAU - Zhou, Zhiguo AU - Zhou Z AD - The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China. FAU - Wang, Jun AU - Wang J FAU - Liu, Wei AU - Liu W FAU - Yu, Chao AU - Yu C FAU - Kong, Bin AU - Kong B FAU - Sun, Yanan AU - Sun Y FAU - Yang, Hong AU - Yang H FAU - Yang, Shiping AU - Yang S FAU - Wang, Wei AU - Wang W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Nanoscale JT - Nanoscale JID - 101525249 RN - 0 (Biocompatible Materials) RN - 0 (Ligands) RN - 0 (Metals) RN - 0 (nickel carbide) RN - 3WJQ0SDW1A (Polyethylene Glycols) RN - 7440-44-0 (Carbon) RN - 7OV03QG267 (Nickel) SB - IM MH - Animals MH - Biocompatible Materials/chemistry MH - Carbon/*chemistry MH - HeLa Cells MH - Humans MH - In Situ Nick-End Labeling MH - *Lasers MH - Ligands MH - Metals/chemistry MH - Mice MH - Mice, Nude MH - Microscopy, Confocal MH - Nanoparticles/*chemistry MH - Neoplasm Transplantation MH - Neoplasms/drug therapy/*therapy MH - Nickel/*chemistry MH - Photochemistry MH - *Phototherapy MH - Polyethylene Glycols/*chemistry MH - Rats MH - *Spectroscopy, Near-Infrared EDAT- 2014/09/04 06:00 MHDA- 2016/05/18 06:00 CRDT- 2014/09/04 06:00 PHST- 2014/09/04 06:00 [entrez] PHST- 2014/09/04 06:00 [pubmed] PHST- 2016/05/18 06:00 [medline] AID - 10.1039/c4nr03727h [doi] PST - ppublish SO - Nanoscale. 2014 Nov 7;6(21):12591-600. doi: 10.1039/c4nr03727h.