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Amino-Acid-Derived Naphthalenediimides as Versatile G-Quadruplex Binders
Dora M Răsădean1, Bin Sheng1, Jyotirmayee Dash2
1Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|April 15, 2017
Summary
Researchers developed water-soluble, amino-acid-functionalized naphthalenediimides (NDIs) to target G-quadruplexes. NDI 3 selectively stabilized the c-kit2 oncogene promoter, crucial in several cancers.
Area of Science:
- Medicinal Chemistry
- Molecular Biology
- Biochemistry
Background:
- G-quadruplexes are non-canonical DNA structures implicated in various biological processes, including oncogenesis.
- Targeting G-quadruplexes offers a promising strategy for cancer therapy.
- Developing selective ligands for specific G-quadruplexes remains a challenge.
Purpose of the Study:
- To design and synthesize novel water-soluble, amino-acid-functionalized naphthalenediimides (NDIs).
- To evaluate the potential of these NDIs as ligands for native G-quadruplexes.
- To assess the selectivity of NDIs towards oncogene promoters and telomeric sequences.
Main Methods:
- Synthesis of a series of amino-acid-functionalized naphthalenediimides (NDIs).
- Testing NDIs against a panel of oncogene promoter G-quadruplexes, the human telomeric sequence (h-telo), and double-stranded DNA.
- Characterization of ligand-DNA interactions and selectivity.
Main Results:
- Successful synthesis of water-soluble NDIs with amino-acid functionalities.
- NDI 3 (Nϵ-Boc-l-lysine NDI) demonstrated high selectivity.
- NDI 3 specifically stabilized the c-kit2 oncogene promoter G-quadruplex.
- The c-kit2 promoter is upregulated in ovarian, gastrointestinal, and breast cancers.
Conclusions:
- Amino-acid-functionalized NDIs are effective ligands for G-quadruplexes.
- NDI 3 represents a highly selective G-quadruplex ligand.
- NDI 3 shows potential for targeting the c-kit2 oncogene promoter in specific malignancies.