Conjugation of the 9-kDa isoform of Granulysin with liposomes potentiates its cytotoxicity

Soler Agesta, R. (Universidad de Zaragoza) ; Guerrero-Ochoa, P. (Universidad de Zaragoza) ; Marco-Brualla, J. (Universidad de Zaragoza) ; Ibáñez-Pérez, R. ; Marzo, I. (Universidad de Zaragoza) ; Martínez Lostao, L. (Universidad de Zaragoza) ; Anel, A. (Universidad de Zaragoza)

Resumen: Nine kDa granulysin (GRNLY) is a human cytolytic protein secreted by cytotoxic T lymphocytes (CTL) and NK cells of the immune system whose demonstrated physiological function is the elimination of bacteria and parasites. In previous studies by our group, the anti-tumor capacity of recombinant granulysin was demonstrated, both in vitro and in vivo. In the present work, we developed lipid nanoparticles whose surfaces can bind recombinant granulysin through the formation of a complex of coordination between the histidine tail of the protein and Ni2+ provided by a chelating lipid in the liposome composition and termed them LUV-GRNLY, for granulysin-bound large unilamellar vesicles. The objective of this formulation is to increase the granulysin concentration at the site of contact with the target cell and to increase the cytotoxicity of the administered dose. The results obtained in this work indicate that recombinant granulysin binds to the surface of the liposome with high efficiency and that its cytotoxicity is significantly increased when it is in association with liposomes. In addition, it has been demonstrated that the main mechanism of death induced by both granulysin and LUV-GRNLY is apoptosis. Jurkat-shBak cells are resistant to GRNLY and also to LUV-GRNLY, showing that LUV-GRNLY uses the mitochondrial apoptotic pathway to induce cell death. On the other hand, we show that LUV-GRNLY induces the expression of the pro-apoptotic members of the Bcl-2 family Bim and especially PUMA, although it also induced the expression of anti-apoptotic Bcl-xL. In conclusion, we demonstrate that binding of GRNLY to the surfaces of liposomes clearly augments its cytotoxic potential, with cell death executed mainly by the mitochondrial apoptotic pathway.

Idioma: Inglés

DOI: 10.3390/ijms23158705

Año: 2022

Publicado en: International Journal of Molecular Sciences 23, 15 (2022), 8705 [13 pp.]
ISSN: 1661-6596

Factor impacto JCR: 5.6 (2022)

Categ. JCR: BIOCHEMISTRY & MOLECULAR BIOLOGY rank: 66 / 285 = 0.232 (2022) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 52 / 178 = 0.292 (2022) - Q2 - T1

Factor impacto CITESCORE: 7.8 - Biochemistry, Genetics and Molecular Biology (Q1) - Computer Science (Q1) - Chemistry (Q1) - Chemical Engineering (Q1) - Medicine (Q1)

Factor impacto SCIMAGO: 1.154 - Medicine (miscellaneous) (Q1) - Physical and Theoretical Chemistry (Q1) - Computer Science Applications (Q1) - Inorganic Chemistry (Q1) - Spectroscopy (Q1) - Organic Chemistry (Q1) - Molecular Biology (Q2) - Catalysis (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/B31-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-105128RB-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Inmunología (Dpto. Microb.Ped.Radio.Sal.Pú.)
Área (Departamento): Área Bioquímica y Biolog.Mole. (Dpto. Bioq.Biolog.Mol. Celular)
Área (Departamento): Área Biología Celular (Dpto. Bioq.Biolog.Mol. Celular)