An Activatable Theranostic for Targeted Cancer Therapy and Imaging
作者:Sankarprasad Bhuniya、Sukhendu Maiti、Eun-Joong Kim、Hyunseung Lee、Jonathan L. Sessler、Kwan Soo Hong、Jong Seung Kim
DOI:10.1002/anie.201311133
日期:2014.4.22
A new theranostic strategy is described. It is based on the use of an “all in one” prodrug, namely the biotinylated piperazine‐rhodol conjugate 4 a. This conjugate, which incorporates the anticancer drug SN‐38, undergoes self‐immolative cleavage when exposed to biological thiols. This leads to the tumor‐targeted release of the active SN‐38 payload along with fluorophore 1 a. This release is made selective
A fluorescence off–on reporter for real time monitoring of gemcitabine delivery to the cancer cells
作者:Sankarprasad Bhuniya、Min Hee Lee、Hyun Mi Jeon、Ji Hye Han、Jae Hong Lee、Nayoung Park、Sukhendu Maiti、Chulhun Kang、Jong Seung Kim
DOI:10.1039/c3cc42653j
日期:——
We present the design, synthesis, optical properties and in vitro biological assessments of the theranostic prodrug 6 in which a near IR fluorophore is conjugated with a cancer cell-directing biotin unit; further it is linked with the anti-cancer drug gemcitabine via a self-immolative spacer, a disulfide bond. The prodrug 6 is able to monitor drug delivery and cellular imaging.
Solid-phase synthesis of modified oligodeoxyribonucleotides with an acridine derivative or a thiophosphate group at their 3′end
作者:U. Asseline、Nguyen T. Thuong
DOI:10.1016/s0040-4039(01)80440-8
日期:1989.1
Use of a derivatized support involving the 2,2′-diethyldithio-group allows the automatedsynthesis of oligodeoxyribonucleotide bearing acridine derivative (via nucleoside-3′-acridinylphosphoramidite ) or 3′phosphorothioate group (including the sulfurization step for attachment of the first nucleoside to the support).
A disulfide-linker for conventional peptide synthesis, attached to a PEGA-resin, has been developed. Reductive hydrolysis cleaves the linker within minutes, liberating the synthesized peptide for rapid sequencing by tandem mass spectrometry. The method has been tested for ten peptides in a single-bead fashion.
Solid-phase preparation of 5′,3′-heterobifunctional oligodeoxyribonucleotides using modified solid supports
The solid-phase preparation of oligodeoxyribonucleotides attached to intercalator or reactive groups through their 5'- and (or) 3'-ends is reported. These syntheses implicate the introduction of suitable masked functional groups at the 5'-end of the oligonucleotide by the intermediate of their phosphoramidite derivatives or at the 3'-end of the oligonucleotide using modified solid supports. After full deblocking, the functional groups (phosphate, thiophosphate, primary amine or thiol) can be reacted with the suitable reactive group involved in the chosen ligand. These methods allow the preparation of heterobifunctional derivatized oligodeoxyribonucleotides.