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Updated: Jul 12, 2026
09:06
Preparation of DNA-crosslinked Polyacrylamide Hydrogels
Published on: August 27, 2014
Synergistic Multicomponent Nucleopeptide-Based Hydrogels: Harnessing DNA-Base Pairing and Electrostatic
Tristan Giraud1,2, Marine Koch1, Paul Hoschtettler1
1Université de Lorraine, CNRS, LCPM, F-54000 Nancy, France.
ACS Materials Au
|July 11, 2026
Summary
Researchers developed novel nucleopeptides, hybrid molecules combining peptides and DNA bases, to create advanced multicomponent hydrogels. These bioinspired materials offer tunable properties for innovative applications.
Area of Science:
- Materials Science
- Biochemistry
- Supramolecular Chemistry
Background:
- Hydrogels, materials bridging liquid and solid states, are traditionally polymer-based but can also be formed from biomolecules like proteins.
- Peptide-based low-molecular-weight hydrogels (LMWHs) offer biomedical potential but often require modifications for enhanced performance.
- Multicomponent hydrogels and hybrid molecules like nucleopeptides (peptides functionalized with DNA bases) are emerging strategies for improved material properties.
Purpose of the Study:
- To investigate the impact of charge and nucleobase-pair complementarity on the properties of multicomponent hydrogels formed from novel nucleopeptides.
- To explore the potential of combining peptide sequences with DNA bases for fine-tuning hydrogel characteristics.
Main Methods:
- Synthesis of six novel nucleopeptides derived from negatively and positively charged peptide sequences (Phe-Glu-Phe-Glu and Phe-Lys-Phe-Lys).
- Functionalization of peptides with one of four DNA nucleobases via a peptide nucleic acid (PNA) moiety.
- Comprehensive multiscale systematic study of mechanical and physicochemical properties of the resulting multicomponent hydrogels.
Main Results:
- Demonstrated that charge complementarity and/or nucleobase-pair complementarity significantly influence hydrogel properties, including gelation time, sol-gel transition temperature, and mechanical strength.
- Highlighted the potential for fine-tuning hydrogel properties through careful selection of complementary components.
- Observed unexpected behaviors, indicating the complex nature of these bioinspired hybrid systems.
Conclusions:
- The study confirms the significant potential of nucleopeptide-based multicomponent hydrogels for developing high-performance, tunable supramolecular materials.
- Findings underscore the importance of understanding component interactions for designing advanced bioinspired hydrogels.
- This approach offers a promising route for innovative applications in biotechnology and biomedicine.
Related Concept Videos
02:27DNA Base Pairing
Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
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The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
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01:16The DNA Helix
Overview
01:07The DNA Helix
Deoxyribonucleic acid, or DNA, is the genetic material responsible for passing traits from generation to generation in all organisms and most viruses. DNA is composed of two strands of nucleotides that wind around each other to form a spring-like structure called a double helix. However, the double helix is not perfectly symmetrical. Instead, there are regularly occurring grooves in the structure. The major groove occurs where the sugar-phosphate backbones are relatively far apart. This space...