Issue 48, 2013

Cellular response to chirality and amplified chirality

Abstract

In this paper we have explored how cancer cell line U87MG responds to drug penicillamine (PA) with reciprocal enantiomeric identities (i.e.L, D-forms). As nano-conjugation leads to amplification of chirality, cellular response to respective chiral forms is studied in the presence and absence of nano-conjugation. The L, D-forms of the drug (penicillamine) and their silver nanoparticle conjugated forms are used and characterized by circular dichroism and fourier transform infrared spectroscopy. We report that cells discriminate between the chiral forms through various mechanisms e.g. by altering mitochondrial membrane potential and selected elements of the caspase pathway. The striking feature which we would like to report is that chirality and the amplified chirality induced reciprocal responses may be dissimilar and even reciprocal. The work shows that the cellular response to geometrical chirality is an evolved concept and an amplified chirality by processes like nano-conjugation may be translated into an altered message in the cell.

Graphical abstract: Cellular response to chirality and amplified chirality

Supplementary files

Article information

Article type
Paper
Submitted
24 Sep 2013
Accepted
11 Oct 2013
First published
14 Oct 2013

J. Mater. Chem. B, 2013,1, 6634-6643

Cellular response to chirality and amplified chirality

S. Roy, K. Bhattacharya, C. Mandal and A. Kr. Dasgupta, J. Mater. Chem. B, 2013, 1, 6634 DOI: 10.1039/C3TB21322F

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