PurposeFibrin gels (FBGs) are potential delivery vehicles for many drugs, and can be easily prepared from purified components. We previously demonstrated their applicability for the release of different doxorubicin (Dox) nanoparticles used clinically or in an experimental stage, such as its inclusion complex with the amino -cyclodextrin polymer (oCD-NH2/Dox). Here we extend these studies by in vitro and in vivo evaluations.MethodsAn in vitro cytotoxicity model consisting of an overlay of a neuroblastoma (NB) cell-containing agar layer above a drug-loaded FBG layer was used. Local toxicity in vivo (histology and blood analysis) was studied in a mouse orthotopic NB model (SHSY5YLuc(+) cells implanted into the left adrenal gland).ResultsIn vitro data show that FBGs loaded with oCD-NH2/Dox have a slightly lower cytotoxicity against NB cell lines than those loaded with Dox. Fibrinogen (FG), and Ca2+ concentrations may modify this activity. In vivo data support a lower general and local toxicity for FBGs loaded with oCD-NH2/Dox than those loaded with Dox.ConclusionOur results suggest a possible increase of the therapeutic index of Dox when locally administered through FBGs loaded with oCD-NH2/Dox, opening the possibility of using these releasing systems for the treatment of neuroblastoma.

Fibrin Gels Entrapment of a Poly-Cyclodextrin Nanocarrier as a Doxorubicin Delivery System in an Orthotopic Model of Neuroblastoma: Evaluation of In Vitro Activity and In Vivo Toxicity

Vecchio G.;Giglio V.;
2019

Abstract

PurposeFibrin gels (FBGs) are potential delivery vehicles for many drugs, and can be easily prepared from purified components. We previously demonstrated their applicability for the release of different doxorubicin (Dox) nanoparticles used clinically or in an experimental stage, such as its inclusion complex with the amino -cyclodextrin polymer (oCD-NH2/Dox). Here we extend these studies by in vitro and in vivo evaluations.MethodsAn in vitro cytotoxicity model consisting of an overlay of a neuroblastoma (NB) cell-containing agar layer above a drug-loaded FBG layer was used. Local toxicity in vivo (histology and blood analysis) was studied in a mouse orthotopic NB model (SHSY5YLuc(+) cells implanted into the left adrenal gland).ResultsIn vitro data show that FBGs loaded with oCD-NH2/Dox have a slightly lower cytotoxicity against NB cell lines than those loaded with Dox. Fibrinogen (FG), and Ca2+ concentrations may modify this activity. In vivo data support a lower general and local toxicity for FBGs loaded with oCD-NH2/Dox than those loaded with Dox.ConclusionOur results suggest a possible increase of the therapeutic index of Dox when locally administered through FBGs loaded with oCD-NH2/Dox, opening the possibility of using these releasing systems for the treatment of neuroblastoma.
activity in vitro; cyclodextrin polymer; doxorubicin; fibrin gel; toxicity in vivo; Animals; Antineoplastic Agents; Cell Line, Tumor; Cell Proliferation; Cell Survival; Cellulose; Cyclodextrins; Doxorubicin; Drug Carriers; Female; Fibrin; Gels; Heterografts; Humans; Mice, Nude; Nanoparticles; Neuroblastoma
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/20.500.11769/372172
Citazioni
  • ???jsp.display-item.citation.pmc??? 3
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 12
social impact