Human hair rich in pyridinic nitrogen-base DNA biosensor for direct electrochemical monitoring of palbociclib-DNA interaction

• Published in: Bioelectrochemistry (Amsterdam, Netherlands) Netherlands), 2022-12, Vol.148, p.108264-108264, Article 108264
• Main Authors: Bilge, Selva, Dogan Topal, Burcu, Caglayan, Mehmet Gokhan, Unal, Mehmet Altay, Nazır, Hasan, Atici, Esen Bellur, Sınağ, Ali, Ozkan, Sibel A.
• Format: Article
• Language: English
• Subjects: Binding mechanism; Biosensors; Breast cancer; Carbon; Deoxyadenosine; Deoxyguanosine; Deoxyribonucleic acid; DNA; DNA structure; Electrochemistry; Glassy carbon; Green synthesis; Hair; Human hair; Human wastes; Multi wall carbon nanotubes; Nanobiosensor; Nanotechnology; Nanotubes; Nitrogen; Palbociclib; Pyridinic nitrogen; Voltammetry
• ISSN: 1567-5394; 1878-562X
• DOI: 10.1016/j.bioelechem.2022.108264

[Display omitted] •Carbon material derived from the waste-based biomass human hair.•Human hair is rich in pyridinic nitrogen, which increases the electrical conductivity.•Carbon material synthesized by the hydrothermal carbonization method.•The possible binding type of dsDNA-PLB could be major groove binding.•The nanobiosensor was applied to the quantification of PLB in tablet dosage forms. Carbon material derived from the waste-based biomass human hair (H), which is naturally rich in pyridinic nitrogen, provides a significant benefit in biosensor applications with its dominant conductivity character. The carbon material was synthesized from human hair waste by the hydrothermal carbonization (HTC) method, which is a promising green synthesis. A morphological characterization of the carbon materials was performed. In this study, H and amine-functionalized multi-walled carbon nanotubes (NH2-MWCNT) were combined for the first time as a modifier, which enhanced the glassy carbon electrode (GCE) surface area for deoxyribonucleic acid (DNA) biosensor studies. Palbociclib (PLB) is clinically used in the treatment of breast cancer. The novel electrochemical nanobiosensor was used to investigate the dsDNA-PLB interaction to evaluate the possibility that PLB causes conformational changes in DNA structure and/or oxidative damage. The interaction was conducted based on the voltammetric signals of deoxyguanosine (dGuo) and deoxyadenosine (dAdo) by differential pulse voltammetry (DPV) on a bare and H + NH2-MWCNT modified GCE. The proposed analytical method was applied to a pharmaceutical dosage form with a satisfactory recovery of 98.25 %. The nanobiosensor was tested in the presence of some interfering agents. The binding mechanism of dsDNA-PLB was also evaluated by spectroscopic and theoretical calculations.