RRC ID 71897
著者 Nakagami A, Mao Q, Gouhier G, Arima H, Kitagishi H.
タイトル FRET-Based In-Cell Detection of Highly Selective Supramolecular Complexes of meso-Tetraarylporphyrin with Peptide/BODIPY-Modified Per-O-Methyl-β-Cyclodextrins.
ジャーナル Chembiochem
Abstract Artificial supramolecular systems capable of self-assembly and that precisely function in biological media are in high demand. Herein, we demonstrate a highly specific host-guest-pair system that functions in living cells. A per-O-methyl-β-cyclodextrin derivative (R8-B-CDMe ) bearing both an octaarginine peptide chain and a BODIPY dye was synthesized as a fluorescent intracellular delivery tool. R8-B-CDMe was efficiently taken up by HeLa cells through both endocytosis and direct transmembrane pathways. R8-B-CDMe formed a 2 : 1 inclusion complex with tetrakis(4-sulfonatophenyl)porphyrin (TPPS) as a guest molecule in water, from which fluorescence resonance energy transfer (FRET) from R8-B-CDMe to TPPS was observed. The FRET phenomenon was clearly detected in living cells using confocal microscopy techniques, which revealed that the formed supramolecular R8-B-CDMe /TPPS complex was maintained within the cells. The R8-B-CDMe cytotoxicity assay revealed that the addition of TPPS counteracts the strong cytotoxicity (IC50 =16 μM) of the CD cavity due to complexation within the cells. A series of experiments demonstrated the bio-orthogonality of the supramolecular per-O-methyl-β-CD/tetraarylporphyrin host-guest pair in living cells.
巻・号 22(22)
ページ 3190-3198
公開日 2021-11-16
DOI 10.1002/cbic.202100380
PMID 34467611
MeSH Boron Compounds / chemistry* Fluorescence Resonance Energy Transfer* HeLa Cells Humans Macromolecular Substances / chemistry Mesoporphyrins / chemistry* Molecular Structure Peptides / chemistry* Spectrometry, Fluorescence beta-Cyclodextrins / chemistry*
IF 2.576
リソース情報
ヒト・動物細胞 HeLa(RCB0007)