Suicide-gene transfection of tumor-tropic placental stem cells employing ultrasound-responsive nanoparticles.



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Paris, J.L. and Torre, Paz de la and Cabañas Criado, Victoria and Manzano García, Miguel and Flores, Ana I. and Vallet Regí, María (2018) Suicide-gene transfection of tumor-tropic placental stem cells employing ultrasound-responsive nanoparticles. Acta Biomaterialia . ISSN 1742-7061 (In Press)

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A Trojan-horse strategy for cancer therapy employing tumor-tropic mesenchymal stem cells transfected with a non-viral nanovector is here presented. In this sense, ultrasound-responsive mesoporous silica nanoparticles were coated with a polycation (using two different molecular weights), providing them with gene transfection capabilities that were evaluated using two different plasmids. First, the expression of Green Fluorescent Protein was analyzed in Decidua-derived Mesenchymal Stem Cells after incubation with the silica nanoparticles. The most successful nanoparticle was then employed to induce the expression of two suicide genes: cytosine deaminase and uracil phosphoribosyl transferase, which allow the cells to convert a non-toxic pro-drug (5-fluorocytosine) into a toxic drug (5-Fluorouridine monophosphate). The effect of the production of the toxic final product was also evaluated in a cancer cell line (NMU cells) co-cultured with the transfected vehicle cells, Decidua-derived Mesenchymal Stem Cells.
Statement of Significance:
Cell-mediated cancer therapy has recently attracted great interest. Tumor-homing cells can exert anticancer effects through innate capacities, via transfection with a therapeutic gene or acting as vehicles of therapeutic nanoparticles. In this work, an ultrasound-responsive mesoporous silica nanoparticle (capable of carrying an anticancer drug) is engineered to act as a non-viral transfection agent for tumor-tropic human placental mesenchymal stem cells. The successful transfection of the vehicle cells is evaluated employing different expression plasmids. After transfection with two suicide genes, the vehicle cells are capable of converting a non-toxic pro-drug into a highly toxic molecule, which can also kill surrounding cancer cells in an in vitro co-culture model. This work opens the gate for a plethora of strategies in which both genes and drug-loaded nanoparticles can be transported towards tumor tissues by easily available human mesenchymal stem cells.

Item Type:Article
Additional Information:

RESEARCHER ID D-9318-2017 (Juan Luis Paris de la Fuente)
ORCID 0000-0001-8950-283X (Juan Luis Paris de la Fuente)
RESEARCHER ID G-8740-2015 (María Victoria Cabañas Criado)
ORCID 0000-0002-4753-5665 (María Victoria Cabañas Criado)
RESEARCHER ID K-3719-2014 (Miguel Manzano García)
ORCID 0000-0001-6238-6111 (Miguel Manzano García)
RESEARCHER ID M-3378-2014 (María Vallet Regí)
ORCID 0000-0002-6104-4889 (María Vallet Regí)

Uncontrolled Keywords:Nanomedicine, Mesoporous silica nanoparticles, Ultrasound, Mesenchymal stem cells, Gene transfection
Subjects:Sciences > Chemistry > Materials
Medical sciences > Pharmacy > Inorganic chemistry
ID Code:50135
Deposited On:23 Nov 2018 10:36
Last Modified:08 Nov 2020 00:01

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