4.7 Article

Factors determining self-assembly of hyaluronan

Journal

CARBOHYDRATE POLYMERS
Volume 254, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.117307

Keywords

Hyaluronan; Atomic force microscopy; Polysaccharides; Network; Aggregates

Funding

  1. Bayerisch-Tschechische Hochschulagentur BTHA/BAYHOST [LTAB19019]
  2. Ministry of Education, Youth and Sports of the Czech Republic DKRVO [RP/CPS/2020/003]
  3. TBU grant [IGA/FT/2020/005]
  4. Ministry of Education, Youth and Sports of the Czech Republic

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The study examined the network-forming and aggregation properties of hyaluronan on the mica surface, showing that factors such as molecular weight, concentration, dissolution conditions, and storage time all influence the morphology and size of the aggregates. Understanding the conformational variability of hyaluronan is crucial for its physiological functions, processability, and usability in pharmacological and biomaterial applications.
The conditions determining network-forming and aggregation properties of hyaluronan on the mica surface were studied. The hyaluronan was deposited on the surface from aqueous and saline solutions and attached by a bivalent cation. The morphology of the immobilized assemblies was characterized by atomic force microscopy. The experimental results show that the morphology and size of the aggregates as well as the density of the interconnecting fibrillar network, both made of hyaluronan, at the liquid-solid phase interface are determined not only by its molecular weight or concentration in solution, but also by the dissolution conditions and storage time. These findings extend the current state of knowledge about the conformational variability of this biologically important polymer. Understanding the conformational variability is of great importance, as it governs the physiological functions of hyaluronan, as well as its processability and formulations. That in turn determines its usability in different pharmacological and biomaterial applications.

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