title: [Preparation, activity and targeting ability evaluation in vitro on folate mediated epigallocatechin-3-gallate albumin nanoparticles].
abstract: To study the preparation, activity and targeting ability evaluation in vitro on epigallocatechin-3-gallate (EGCG) bovine serum albumin nanoparticles targeting to PC-3 cells, the folate mediated EGCG bovine serum albumin nanoparticles (FA-EGCG-BSANP) were prepared by desolvation process. The morphology and particle size of the nanoparticles were determined by atomic force microscope (AFM). HPLC was used to analyse the entrapment efficiency and drug loading rate of EGCG The amount of folate conjugation on the BSANP was determined by quantitative ultraviolet (UV) spectrophotometer analysis. The targeting ability to PC-3 was observed using laser scanning confocal microscope (LSCM) and fluorophotometer microscope. And the activity of FA-EGCG-BSANP was mensurated by MTT method. The morphology and particle size distribution of FA-EGCG-BSANP were uniform and even with the mean particle size of 200 nm. The entrapment efficiency and loading rate of EGCG were (81.5 +/- 1.8) % and (29.3 +/- 0.6) %, respectively, and the amount of folate conjugation was 18.363 microg x mg(-1) BSA. The FA-EGCG-BSANP uptakes by cultured PC-3 cells were 23.65 times the amount of EGCG-BSANP in a concentration dependant manner. The lethality of PC-3 cells treated with FA-EGCG-BSA was 82.8%, while those treated with EGCG and EGCG-BSANP were 58.6% and 55.1%, respectively. And lethality of PC-3 cells was positively correlated with the nanoparticles uptake amount. FA-EGCG-BSANP can significantly promote EGCG to PC-3 cells sites and improve their efficacy, which is considered to an experimental foundation for further research on its activity, targeting ability and metabolism in vivo.
authors.affiliation: Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Ministry of Education, Harbin 150040, China. zygorl@yahoo.com.cn
authors.forename: Yuan-gang
authors.initials: YG
authors.lastname: Zu
authors.forename: Shuai
authors.initials: S
authors.lastname: Yuan
authors.forename: Xiu-hua
authors.initials: XH
authors.lastname: Zhao
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
authors.forename: Xiao-nan
authors.initials: XN
authors.lastname: Zhang
authors.forename: Ru
authors.initials: R
authors.lastname: Jiang
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000493:pharmacokinetics* / Q000494:pharmacology; D002392:Catechin / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000493:pharmacokinetics / Q000494:pharmacology; D016923:Cell Death / Q000187:drug effects; D045744:Cell Line, Tumor; D004337:Drug Carriers; D004339:Drug Compounding; D016503:Drug Delivery Systems / Q000379:methods*; D005492:Folic Acid / Q000008:administration & dosage / Q000737:chemistry / Q000493:pharmacokinetics; D006801:Humans; D008297:Male; D053758:Nanoparticles; D010316:Particle Size; D011471:Prostatic Neoplasms / Q000378:metabolism* / Q000473:pathology; D012710:Serum Albumin, Bovine / Q000737:chemistry / Q000493:pharmacokinetics / Q000494:pharmacology
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004337:Drug Carriers; D012710:Serum Albumin, Bovine; D002392:Catechin; D005492:Folic Acid; C045651:epigallocatechin gallate