title: Photothermal cancer therapy via femtosecond-laser-excited FePt nanoparticles.
abstract: FePt nanoparticles (NPs) have recently been revealed to be significant multifunctional materials for the applications of biomedical imaging, drug delivery and magnetic hyperthermia due to their novel magnetic properties. In this study, a newly discovered photothermal effect activated by the near infrared (NIR) femtosecond laser for FePt NPs was demonstrated. The threshold laser energy to destroy cancer cells was found to be comparable to that of gold nanorods (Au NRs) previously reported. Through the thermal lens technique, it was concluded that the temperature of the FePt NPs can be heated up to a couple of hundreds degree C in picoseconds under laser irradiation due to the excellent photothermal transduction efficiency of FePt NPs. This finding boosts FePt NPs versatility in multifunctional targeted cancer therapy.
authors.affiliation: Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
authors.forename: Cheng-Lung
authors.initials: CL
authors.lastname: Chen
authors.forename: Ling-Ru
authors.initials: LR
authors.lastname: Kuo
authors.forename: Shin-Yu
authors.initials: SY
authors.lastname: Lee
authors.forename: Yeu-Kuang
authors.initials: YK
authors.lastname: Hwu
authors.forename: Shang-Wei
authors.initials: SW
authors.lastname: Chou
authors.forename: Chia-Chun
authors.initials: CC
authors.lastname: Chen
authors.forename: Fu-Hsiung
authors.initials: FH
authors.lastname: Chang
authors.forename: Kung-Hsuan
authors.initials: KH
authors.lastname: Lin
authors.forename: Dzung-Han
authors.initials: DH
authors.lastname: Tsai
authors.forename: Yang-Yuan
authors.initials: YY
authors.lastname: Chen
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D006979:Hyperthermia, Induced / Q000379:methods*; D007501:Iron / Q000627:therapeutic use*; D028022:Low-Level Light Therapy / Q000379:methods*; D008325:Mammary Neoplasms, Experimental / Q000473:pathology / Q000628:therapy*; D051379:Mice; D053758:Nanoparticles / Q000737:chemistry* / Q000627:therapeutic use*; D010984:Platinum / Q000627:therapeutic use*; D011829:Radiation Dosage; D016896:Treatment Outcome
chemical_list: D010984:Platinum; D007501:Iron