Micellization, anti-proliferative activity and binding study of cationic gemini surfactants with calf thymus DNA

Farooq Ahmad Wani, Kamalakanta Behera, Rayees Ahmad Padder, Mohammad Husain, Maqsood Ahmad Malik, Nada Shaeel Al-Thabaiti, Rabia Ahmad, Rajan Patel*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Aggregation behaviour of two cation gemini surfactants i.e., 1,3-bis (1-decylbenzimidazolium) propane bromide BG10 and 1,3-bis (1-octylbenzimidazolium) propane bromide BG8 was studied using conductivity and dynamic light scattering (DLS). The enthalpy (∆Hm о), entropy (∆Sm о) and Gibbs free energy of micellization (∆Gm о) have been observed from the conductivity method at various temperatures. The anti-proliferative potential of these novel gemini surfactants against human non-small lung cancer cell line-H1299 has been investigated. Both gemini surfactants, BG8 and BG10 showed a considerable inhibition in cancer cell proliferation and IC50 values are observed to reduce with chain length. The ctDNA binding was also observed by UV–visible, transmission electron microscopy (TEM), ethidium bromide (EtBr) exclusion experiments, agarose gel electrophoresis, circular dichroism (CD) and viscometry techniques. These results were further validated by in-silico studies. The binding capability of BG surfactants to ctDNA can be observed from their ability to remove EtBr from the intercalating complex of DNA resulting in fluorescence quenching.

Original languageEnglish
Article number100221
JournalColloids and Interface Science Communications
Volume34
DOIs
StatePublished - Jan 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

  • Anti-proliferative
  • Calf thymus-DNA
  • Circular dichroism
  • Gel electrophoresis
  • Gemini surfactants

ASJC Scopus subject areas

  • Biotechnology
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry
  • Materials Chemistry

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