Efecto de nanopartículas arqueolipídicas en células endoteliales humanas
; Jerez, Horacio Emanuel
; Tatti, Silvio Alejandro ; Romero, Eder Lilia
; Schattner, Mirta Ana 
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Fecha
08/2021
Editorial
Sociedad Argentina de Hematología
Revista
Hematología
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Institución organizadora
ISSN
0329-0379
eISSN
2250-8309
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Español
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Resumen
Igual que los liposomas, los arqueosomas son nanopartículas (NPs), utilizadas como sistemas de liberación de fármacos. Los arqueosomas son liposomas preparados con arqueolípidos; sin embargo, su efecto sobre el endotelio vascular, datos cruciales para su ingreso en la clínica, es desconocido. En este estudio analizamos el efecto de nuevos arqueosomas preparados a partir de una cepa hiperhalófila de la Patagonia Argentina en células endoteliales de vena umbilical humana (HUVECs) en condiciones fisiológicas e inflamatorias y lo comparamos con el de liposomas convencionales. Si bien ninguna de las NPs afectó la viabilidad y expresión de ICAM-1 y E-selectina en condiciones basales, los arqueosomas redujeron la expresión de ambas moléculas y la secreción de IL-6 inducida por LPS y Pam3CSK4, efecto no observado con TNF-α y asociado a una inhibición en la activación de la vía NF-kB y ERK1/2. Ninguno de estos parámetros fue modificado por los liposomas. En forma similar, solamente los arqueosomas fueron endocitados por HUVECs. Nuestros datos revelan una importante capacidad de estos arqueosomas para disminuir la activación endotelial y sugieren que, cargados con drogas antiinflamatorias, podrían magnificar su actividad sobre el endotelio inflamado siendo de especial interés su investigación en vasculopatías.
The same as liposomes, archaeosomes are nanoparticles (NPs), made of archaeolipids employed as drug delivery systems. Up to date, the effect of archaeosomes on the vascular endothelium, critical data for its admission to the clinic, remains largely unknown. In this study we analyzed the effect of new archaeosomes prepared from a hyperhalophilic strain from Patagonia Argentina on human umbilical vein endothelial cells (HUVECs) under physiological and inflammatory conditions and compare it with that of conventional liposomes. Although none of the NPs affected the viability and expression of ICAM-1 and E-selectin under basal conditions, the archaeosomes reduced the expression of both molecules and the secretion of IL-6 induced by LPS and Pam3CSK4, an effect not observed with TNF- α and associated with an inhibition in the activation of the NF-kB and ERK1/2 pathway. None of these parameters were modified by the liposomes. Similarly, only archaeosomes were endocytosed by HUVECs. Our data reveal an important capacity of these archaeosomes to decrease endothelial activation and suggest that loaded with anti-inflammatory drugs, they could magnify their activity on inflamed endothelium, their research in vasculopathies being of special interest.
The same as liposomes, archaeosomes are nanoparticles (NPs), made of archaeolipids employed as drug delivery systems. Up to date, the effect of archaeosomes on the vascular endothelium, critical data for its admission to the clinic, remains largely unknown. In this study we analyzed the effect of new archaeosomes prepared from a hyperhalophilic strain from Patagonia Argentina on human umbilical vein endothelial cells (HUVECs) under physiological and inflammatory conditions and compare it with that of conventional liposomes. Although none of the NPs affected the viability and expression of ICAM-1 and E-selectin under basal conditions, the archaeosomes reduced the expression of both molecules and the secretion of IL-6 induced by LPS and Pam3CSK4, an effect not observed with TNF- α and associated with an inhibition in the activation of the NF-kB and ERK1/2 pathway. None of these parameters were modified by the liposomes. Similarly, only archaeosomes were endocytosed by HUVECs. Our data reveal an important capacity of these archaeosomes to decrease endothelial activation and suggest that loaded with anti-inflammatory drugs, they could magnify their activity on inflamed endothelium, their research in vasculopathies being of special interest.
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