Document details

The potential of the fibronectin inhibitor Arg-Gly-Asp-Ser in the development of therapies for glioblastoma

Author(s): Castro-Ribeiro, Maria L. ; Castro, Vânia Isabel Baptista ; Castro, Joana vieira de ; Pires, R. A. ; Reis, R. L. ; Costa, Bruno M. ; Ferreira, Helena ; Neves, N. M.

Date: 2024

Persistent ID: https://hdl.handle.net/1822/91784

Origin: RepositóriUM - Universidade do Minho

Subject(s): Doxorubicin; Fibronectin inhibitor; Glioblastoma; Liposomes; RGDS-functionalized hyaluronic acid hydrogel


Description

Glioblastoma (GBM) is the most lethal and common malignant primary brain tumor in adults. An important feature that supports GBM aggressiveness is the unique composition of its extracellular matrix (ECM). Particularly, fibronectin plays an important role in cancer cell adhesion, differentiation, proliferation, and chemoresistance. Thus, herein, a hydrogel with mechanical properties compatible with the brain and the ability to disrupt the dynamic and reciprocal interaction between fibronectin and tumor cells was produced. High-molecular-weight hyaluronic acid (HMWHA) functionalized with the inhibitory fibronectin peptide Arg-Gly-Asp-Ser (RGDS) was used to produce the polymeric matrix. Liposomes encapsulating doxorubicin (DOX) were also included in the hydrogel to kill GBM cells. The resulting hydrogel containing liposomes with therapeutic DOX concentrations presented rheological properties like a healthy brain. In vitro assays demonstrated that unmodified HMW-HA hydrogels only caused GBM cell killing after DOX incorporation. Conversely, RGDS-functionalized hydrogels displayed per se cytotoxicity. As GBM cells produce several proteolytic enzymes capable of disrupting the peptideâ HA bond, we selected MMP-2 to illustrate this phenomenon. Therefore, RGDS internalization can induce GBM cell apoptosis. Importantly, RGDS-functionalized hydrogel incorporating DOX efficiently damaged GBM cells without affecting astrocyte viability, proving its safety. Overall, the results demonstrate the potential of the RGDS-functionalized hydrogel to develop safe and effective GBM treatments.

FCT -Fundação para a Ciência e a Tecnologia(NORTE-01-0145-FEDER-000039)

Document Type Journal article
Language English
Contributor(s) Universidade do Minho
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