title: Synthesis of oligonucleotides carrying amino lipid groups at the 3'-end for RNA interference studies.
abstract: Novel lipid derivatives carrying amino and triazolyl groups were efficiently synthesized and covalently anchored at the 3'-termini of oligonucleotides. The desired amino-lipid conjugates were fully characterized by reversed-phase HPLC and MALDI-TOF mass spectrometry. The methodology was applied to the synthesis of lipid-siRNA designed to inhibit tumor necrosis factor (TNF-α) in order to obtain siRNAs with anti-inflammatory properties. The siRNA duplex carrying amino-lipids at the 3'-end of the passenger strand has inhibitory properties similar to those of unmodified RNA duplexes in HeLa cells, indicating that the new lipid derivatives are compatible with the RNA interference machinery.
authors.affiliation: Institute for Research in Biomedicine (IRB Barcelona), Networking Center on Bioengineering, Biomaterials and Biomedicine (CIBER-BBN) and Institute for Advanced Chemistry of Catalonia (IQAC), Spanish Research Council (CSIC), Cluster Building, Baldiri Reixac 10, E-08028 Barcelona, Spain.
authors.forename: Santiago
authors.initials: S
authors.lastname: Grijalvo
authors.forename: Sandra M
authors.initials: SM
authors.lastname: Ocampo
authors.forename: José C
authors.initials: JC
authors.lastname: Perales
authors.forename: Ramon
authors.initials: R
authors.lastname: Eritja
mesh_terms: D020868:Gene Silencing / Q000187:drug effects; D006367:HeLa Cells; D006801:Humans; D008055:Lipids / Q000737:chemistry*; D015394:Molecular Structure; D009841:Oligonucleotides / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D012333:RNA, Messenger / Q000187:drug effects / Q000235:genetics; D034741:RNA, Small Interfering / Q000737:chemistry* / Q000494:pharmacology; D013329:Structure-Activity Relationship; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors / Q000235:genetics
chemical_list: D008055:Lipids; D009841:Oligonucleotides; D012333:RNA, Messenger; D034741:RNA, Small Interfering; D014409:Tumor Necrosis Factor-alpha