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Carbon Skeletons

Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side chains...
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Designing an Entactin-Inspired Short Bioactive Hydrogel as Biofunctional Scaffold.

Shambhavi Kashyap1, Sweta Mohanty1, Sourav Sen1

  • 1Chemical Biology Unit, Institute of Nano Science and Technology, Sector-81, Knowledge City, Mohali, Punjab, 140306, India.

Chembiochem : a European Journal of Chemical Biology
|May 22, 2025
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Summary
This summary is machine-generated.

Researchers developed novel self-assembling peptide hydrogels from entactin protein. These biocompatible biomaterials support cell adhesion and proliferation, showing promise for biomedical applications.

Keywords:
biomaterialsbiomimetic synthesisentactinextracellular matrix‐derived hydrogelsself‐assemblysupramolecular chemistry

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Extracellular Matrix Mimicry

Background:

  • Self-assembled peptide hydrogels mimic the extracellular matrix (ECM).
  • Bioactive peptide sequences are crucial for ECM-like material development.
  • Entactin protein fragments offer potential for novel biomaterial design.

Purpose of the Study:

  • To explore the self-assembly of a minimalist bioactive peptide sequence (YWTD) from entactin.
  • To investigate hydrogel formation and characterization at different pH levels.
  • To evaluate the biocompatibility and cellular response to the novel peptide hydrogel.

Main Methods:

  • Design and synthesis of the YWTD peptide sequence.
  • pH-dependent self-assembly studies to form hydrogels.
  • Characterization of hydrogel structure (nanofibrous) and mechanical properties (tuneable stiffness).
  • In vitro evaluation of fibroblast cell adhesion and proliferation within the hydrogel matrix.

Main Results:

  • The YWTD peptide self-assembles into hydrogels at pH 6.2 via surface charge neutralization.
  • Hydrogels formed at physiological pH exhibit a nanofibrous structure and tuneable mechanical stiffness.
  • The peptide hydrogels are biocompatible and promote enhanced fibroblast cell adhesion and proliferation.

Conclusions:

  • A novel bioactive peptide sequence from entactin successfully self-assembles into functional hydrogels.
  • The developed peptide hydrogels mimic ECM properties and support cellular functions.
  • This biomaterial demonstrates significant potential for applications in regenerative medicine and tissue engineering.