Some hybrid foldamers of various length, all containing the (4R,5S)-4-carboxy-5-methyloxazolidin-2-one (d-Oxd) moiety alternating with an l-amino acid (l-Val, l-Lys, or l-Ala), were prepared in order to study their preferred conformations and to evaluate their biological activity. Surprisingly, only the longer oligomers containing l-Ala fold into well-established helices, whereas all the other oligomers give partially unfolded turn structures. Nevertheless, they all show good biocompatibility, with no detrimental effects up to 64μm. After equipping some selected foldamers with the fluorescent tag rhodamineB, a quantitative analysis was performed by dose- and time-response fluorescence-activated cell sorting (FACS) assays with human HeLa cells and primary blood lymphocytes, granulocytes, and monocytes. Among the cell types analyzed, the oligomers associated with monocytes and granulocytes with greatest efficacy, still visible after 24h incubation. This effect is even more pronounced for foldamers that are able to form stable helices.

Del Secco, B., Malachin, G., Milli, L., Zanna, N., Papini, E., Cornia, A., et al. (2017). Form Matters: Stable Helical Foldamers Preferentially Target Human Monocytes and Granulocytes. CHEMMEDCHEM, 12(4), 337-345-345 [10.1002/cmdc.201600597].

Form Matters: Stable Helical Foldamers Preferentially Target Human Monocytes and Granulocytes

DEL SECCO, BENEDETTA;MILLI, LORENZO;ZANNA, NICOLA;TOMASINI, CLAUDIA
2017

Abstract

Some hybrid foldamers of various length, all containing the (4R,5S)-4-carboxy-5-methyloxazolidin-2-one (d-Oxd) moiety alternating with an l-amino acid (l-Val, l-Lys, or l-Ala), were prepared in order to study their preferred conformations and to evaluate their biological activity. Surprisingly, only the longer oligomers containing l-Ala fold into well-established helices, whereas all the other oligomers give partially unfolded turn structures. Nevertheless, they all show good biocompatibility, with no detrimental effects up to 64μm. After equipping some selected foldamers with the fluorescent tag rhodamineB, a quantitative analysis was performed by dose- and time-response fluorescence-activated cell sorting (FACS) assays with human HeLa cells and primary blood lymphocytes, granulocytes, and monocytes. Among the cell types analyzed, the oligomers associated with monocytes and granulocytes with greatest efficacy, still visible after 24h incubation. This effect is even more pronounced for foldamers that are able to form stable helices.
2017
Del Secco, B., Malachin, G., Milli, L., Zanna, N., Papini, E., Cornia, A., et al. (2017). Form Matters: Stable Helical Foldamers Preferentially Target Human Monocytes and Granulocytes. CHEMMEDCHEM, 12(4), 337-345-345 [10.1002/cmdc.201600597].
Del Secco, Benedetta; Malachin, Giulia; Milli, Lorenzo; Zanna, Nicola; Papini, Emanuele; Cornia, Andrea; Tavano, Regina; Tomasini, Claudia
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/587504
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