title: Structure-activity relationship studies of targeting ligands against breast cancer cells.
abstract: A series of LXY3 (1) analogues were designed and synthesized. Their binding affinity was demonstrated using MDA-MB-231 breast cancer cells adherence inhibition assay. Further structure-activity relationship was obtained. Analogue 29 was discovered to have 3.5-fold increase of the binding affinity. Fluorescent microscopy and in vivo and ex vivo imaging studies demonstrated that 29 is an efficient in vivo targeting agent against alpha3 integrin of MDA-MB-231 breast tumor xenograft implant.
authors.affiliation: Division of Hematology and Oncology, Department of Internal Medicine, UC Davis Cancer Center, University of California Davis, Sacramento, California 95817, USA.
authors.forename: Nianhuan
authors.initials: N
authors.lastname: Yao
authors.forename: Wenwu
authors.initials: W
authors.lastname: Xiao
authors.forename: Leah
authors.initials: L
authors.lastname: Meza
authors.forename: Harry
authors.initials: H
authors.lastname: Tseng
authors.forename: Mathida
authors.initials: M
authors.lastname: Chuck
authors.forename: Kit S
authors.initials: KS
authors.lastname: Lam
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D001943:Breast Neoplasms; D002448:Cell Adhesion / Q000187:drug effects; D045744:Cell Line, Tumor; D004354:Drug Screening Assays, Antitumor; D005260:Female; D039201:Integrin alpha3beta1 / Q000378:metabolism; D008024:Ligands; D051379:Mice; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D010456:Peptides, Cyclic / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D011485:Protein Binding; D013329:Structure-Activity Relationship; D014183:Transplantation, Heterologous
chemical_list: D000970:Antineoplastic Agents; D039201:Integrin alpha3beta1; D008024:Ligands; D010456:Peptides, Cyclic