Here, for the production of a bioink-based gellan gum, an amino derivative of this polysaccharide was mixed with a mono-functionalized aldehyde polyethyleneglycol in order to improve viscoelastic macroscopic properties and the potential processability by means of bioprinting techniques as confirmed by the printing tests. The dynamic Schiff base linkage between amino and aldehyde groups temporally modulates the rheological properties and allows a reduction of the applied pressure during extrusion followed by the recovery of gellan gum strength. Rheological properties, often related to printing resolution, were extensively investigated confirming pseudoplastic behavior and thermotropic and ionotropic responses. The success of bioprinting is related to different parameters. Among them, cell density must be carefully selected, and in order to quantify their role on printability, murine preostoblastic cells (MC3T3-E1) and human colon tumor cells (HCT-116) were chosen as cell line models. Here, we investigated the effect of their density on the bioink’s rheological properties, showing a more significant difference between cell densities for MC3T3-E1 compared to HCT-116. The results suggest the necessity of not neglecting this aspect and carrying out preliminary studies to choose the best cell densities to have the maximum viability and consequently to set the printing parameters.

Martorana A., Pitarresi G., Palumbo F.S., Barberi G., Fiorica C., Giammona G. (2022). Correlating Rheological Properties of a Gellan Gum-Based Bioink: A Study of the Impact of Cell Density. POLYMERS, 14(9), 1-18 [10.3390/polym14091844].

Correlating Rheological Properties of a Gellan Gum-Based Bioink: A Study of the Impact of Cell Density

Martorana A.
Primo
Writing – Review & Editing
;
Pitarresi G.
Secondo
Writing – Review & Editing
;
Palumbo F. S.
Writing – Review & Editing
;
Barberi G.
Writing – Review & Editing
;
Fiorica C.
Penultimo
Writing – Review & Editing
;
Giammona G.
Ultimo
Writing – Review & Editing
2022-05-01

Abstract

Here, for the production of a bioink-based gellan gum, an amino derivative of this polysaccharide was mixed with a mono-functionalized aldehyde polyethyleneglycol in order to improve viscoelastic macroscopic properties and the potential processability by means of bioprinting techniques as confirmed by the printing tests. The dynamic Schiff base linkage between amino and aldehyde groups temporally modulates the rheological properties and allows a reduction of the applied pressure during extrusion followed by the recovery of gellan gum strength. Rheological properties, often related to printing resolution, were extensively investigated confirming pseudoplastic behavior and thermotropic and ionotropic responses. The success of bioprinting is related to different parameters. Among them, cell density must be carefully selected, and in order to quantify their role on printability, murine preostoblastic cells (MC3T3-E1) and human colon tumor cells (HCT-116) were chosen as cell line models. Here, we investigated the effect of their density on the bioink’s rheological properties, showing a more significant difference between cell densities for MC3T3-E1 compared to HCT-116. The results suggest the necessity of not neglecting this aspect and carrying out preliminary studies to choose the best cell densities to have the maximum viability and consequently to set the printing parameters.
1-mag-2022
Settore CHIM/09 - Farmaceutico Tecnologico Applicativo
Martorana A., Pitarresi G., Palumbo F.S., Barberi G., Fiorica C., Giammona G. (2022). Correlating Rheological Properties of a Gellan Gum-Based Bioink: A Study of the Impact of Cell Density. POLYMERS, 14(9), 1-18 [10.3390/polym14091844].
File in questo prodotto:
File Dimensione Formato  
2022 Polymers.pdf

accesso aperto

Descrizione: Articolo
Tipologia: Versione Editoriale
Dimensione 4.02 MB
Formato Adobe PDF
4.02 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/558001
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 4
social impact