title: Photoacoustic microscopy of tyrosinase reporter gene in vivo.
abstract: Photoacoustic tomography is a hybrid modality based on optical absorption excitation and ultrasonic detection. It is sensitive to melanin, one of the primary absorbers in skin. For cells that do not naturally contain melanin, melanin production can be induced by introducing the gene for tyrosinase, the primary enzyme responsible for expression of melanin in melanogenic cells. Optical resolution photoacoustic microscopy was used in the ex vivo study reported here, where the signal from transfected cells increased by more than 10 times over wild-type cells. A subsequent in vivo experiment was conducted to demonstrate the capability of photoacoustic microscopy to spectrally differentiate between tyrosinase-catalyzed melanin and various other absorbers in tissue.
authors: Arie
authors: A
authors: Krumholz
authors: Sarah J
authors: SJ
authors: Vanvickle-Chavez
authors: Junjie
authors: J
authors: Yao
authors: Timothy P
authors: TP
authors: Fleming
authors: William E
authors: WE
authors: Gillanders
authors: Lihong V
authors: LV
authors: Wang
mesh_terms: D004867:Equipment Design; D017930:Genes, Reporter; D057809:HEK293 Cells; D006454:Hemoglobins; D006801:Humans; D008543:Melanins / Q000737:chemistry / Q000378:metabolism; D008853:Microscopy / Q000295:instrumentation / Q000379:methods*; D057054:Molecular Imaging / Q000379:methods*; D014442:Monophenol Monooxygenase / Q000378:metabolism*; D010108:Oxyhemoglobins; D019047:Phantoms, Imaging; D012815:Signal Processing, Computer-Assisted; D014054:Tomography / Q000295:instrumentation / Q000379:methods*; D014463:Ultrasonography / Q000379:methods
chemical_list: D006454:Hemoglobins; D008543:Melanins; D010108:Oxyhemoglobins; C100003:deoxyhemoglobin; D014442:Monophenol Monooxygenase