Comprehending the intermolecular interaction of dacomitinib with bovine serum albumin : experimental and theoretical approaches

Dacomitinib (DAC), as a member of tyrosine kinase inhibitors is primarily used to treat non-small cell lung cancer. The intermolecular interaction between DAC and bovine serum albumin (BSA) was comprehended with the help of experiments and theoretical simulations. The outcomes indicated that DAC quenched the endogenous fluorescence of BSA through static quenching mode. In the binding process, DAC was preferentially inserted into the hydrophobic cavity of BSA subdomain IA (site III), and a fluorescence-free DAC-BSA complex with molar ratio of 1:1 was generated. The outcomes confirmed that DAC had a stronger affinity on BSA and the non-radiative energy transfer occurred in the combination process of two. And, it can be inferred from the outcomes of thermodynamic parameters and competition experiments with 8-aniline-1-naphthalenesulfonic acid (ANS) and D-(+)- sucrose that hydrogen bonds (H-bonds), van der Waals forces (vdW) and hydrophobic forces had a significant impact in inserting DAC into the hydrophobic cavity of BSA. The outcomes from multi-spectroscopic measurements that DAC could affect the secondary structure of BSA, that was, α-helix content decreased slightly from 51.0% to 49.7%. Moreover, the combination of DAC and BSA led to a reduction in the hydrophobicity of the microenvironment around tyrosine (Tyr) residues in BSA while had little influence on the microenvironment of around tryptophan (Trp) residues. The outcomes from molecular docking and molecular dynamics (MD) simulation further demonstrated the insertion of DAC into site III of BSA and hydrogen energy and van der Waals energy were the dominant energy of DAC-BSA stability. In addition, the influence of metal ions (Fe3+, Cu2+, Co2+, etc.) on the affinity of the system was explored.Communicated by Ramaswamy H. Sarma.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:42

Enthalten in:

Journal of biomolecular structure & dynamics - 42(2024), 7 vom: 11. Apr., Seite 3579-3592

Sprache:

Englisch

Beteiligte Personen:

Hu, Zhe-Ying [VerfasserIn]
Wang, Wan-Jun [VerfasserIn]
Hu, Lu [VerfasserIn]
Shi, Jie-Hua [VerfasserIn]
Jiang, Shao-Liang [VerfasserIn]

Links:

Volltext

Themen:

27432CM55Q
5092U85G58
Bovine serum albumin
Dacomitinib
Fluorescence spectroscopy
Interaction
Journal Article
Molecular modeling
Quinazolinones
Serum Albumin, Bovine

Anmerkungen:

Date Completed 12.04.2024

Date Revised 12.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1080/07391102.2023.2218926

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM357906268