title: Cryopreservable and tumorigenic three-dimensional tumor culture in porous poly(lactic-co-glycolic acid) microsphere.
abstract: In vitro tumor models that mimic in vivo conditions may be ideal for screening anticancer drugs and their formulations and developing tumors in animal models. Three-dimensional (3-D) culture of cancer cells on polymeric scaffolds can be an option for such models. In the present study, porous poly(lactic acid-co-glycolic acid) (PLGA) microsphere was used both as a cancer cell culture substrate to expand cells and as a cancer cell transplantation vehicle for tumor construction in mice. MCF-7 cells cultured on porous PLGA microspheres in stirred suspension bioreactors expanded by 2.8-fold over seven days and maintained viability. At three months after inoculation with 2x10(6) cells/site, the tumor formation by MCF-7 cells cultured on microspheres was much more effective (4 tumors/5 mice) than its counterpart cultured on plates (1/5). More importantly, cell viability and metabolic activity were not significantly changed even after one freeze-thaw cycle of the 3-D culture. MCF-7 cells cultured on the microspheres and the cells in 3-D after cryopreservation were more resistant to doxorubicin than MCF-7 cells cultured on plates.
authors.affiliation: Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, 421 Wakara Way, Suite 315, UT 84108, USA.
authors.forename: Sun-Woong
authors.initials: SW
authors.lastname: Kang
authors.forename: You Han
authors.initials: YH
authors.lastname: Bae
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000494:pharmacology; D001672:Biocompatible Materials / Q000737:chemistry; D018929:Cell Culture Techniques; D002470:Cell Survival; D015925:Cryopreservation / Q000379:methods*; D004317:Doxorubicin / Q000494:pharmacology; D006801:Humans; D019344:Lactic Acid / Q000737:chemistry*; D008422:Materials Testing; D051379:Mice; D008863:Microspheres; D009368:Neoplasm Transplantation; D011100:Polyglycolic Acid / Q000737:chemistry*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D016062:Porosity; D023822:Tissue Engineering / Q000379:methods; D054457:Tissue Scaffolds; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000903:Antibiotics, Antineoplastic; D001672:Biocompatible Materials; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D004317:Doxorubicin