A Multifunctional Nanostructured Hydrogel as a Platform for Deciphering Niche Interactions of Hematopoietic Stem and Progenitor Cells

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Anita Ludwig-Husemann - , Leibniz Universität Hannover (LUH), Karlsruher Institut für Technologie (Autor:in)
  • Peter Schertl - , Leibniz Universität Hannover (LUH) (Autor:in)
  • Ananya Shrivastava - , Leibniz Universität Hannover (LUH) (Autor:in)
  • Udo Geckle - , Karlsruher Institut für Technologie (Autor:in)
  • Johanna Hafner - , Karlsruher Institut für Technologie (Autor:in)
  • Frank Schaarschmidt - , Leibniz Universität Hannover (LUH) (Autor:in)
  • Norbert Willenbacher - , Karlsruher Institut für Technologie (Autor:in)
  • Uwe Freudenberg - , Leibniz-Institut für Polymerforschung Dresden (Autor:in)
  • Carsten Werner - , Center for Regenerative Therapies Dresden (CRTD), Professur für Biofunktionale Polymermaterialien (gB/IPF), Leibniz-Institut für Polymerforschung Dresden (Autor:in)
  • Cornelia Lee-Thedieck - , Leibniz Universität Hannover (LUH) (Autor:in)

Abstract

For over half a century, hematopoietic stem cells (HSCs) have been used for transplantation therapy to treat severe hematologic diseases. Successful outcomes depend on collecting sufficient donor HSCs as well as ensuring efficient engraftment. These processes are influenced by dynamic interactions of HSCs with the bone marrow niche, which can be revealed by artificial niche models. Here, a multifunctional nanostructured hydrogel is presented as a 2D platform to investigate how the interdependencies of cytokine binding and nanopatterned adhesive ligands influence the behavior of human hematopoietic stem and progenitor cells (HSPCs). The results indicate that the degree of HSPC polarization and motility, observed when cultured on gels presenting the chemokine SDF-1α and a nanoscale-defined density of a cellular (IDSP) or extracellular matrix (LDV) α4β1 integrin binding motif, are differently influenced on hydrogels functionalized with the different ligand types. Further, SDF-1α promotes cell polarization but not motility. Strikingly, the degree of differentiation correlates negatively with the nanoparticle spacing, which determines ligand density, but only for the cellular-derived IDSP motif. This mechanism potentially offers a means of predictably regulating early HSC fate decisions. Consequently, the innovative multifunctional hydrogel holds promise for deciphering dynamic HSPC-niche interactions and refining transplantation therapy protocols.

Details

OriginalspracheEnglisch
Aufsatznummer2304157
FachzeitschriftAdvanced healthcare materials
Jahrgang13
Ausgabenummer22
PublikationsstatusAngenommen/Im Druck - 2024
Peer-Review-StatusJa

Externe IDs

PubMed 38870600

Schlagworte

Schlagwörter

  • block copolymer micelle nanolithography, differentiation, hematopoietic stem cells, integrins, multifunctionality, nanostructures, two dimensional hydrogels