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Constitutive expression of the active fragment of human vasostatin Vs30 in Pichia pastoris SMD1168H
SERGIO CALDERON SALAIS
PRISILIANA VELAZQUEZ BERNARDINO
VICTOR EMMANUEL BALDERAS HERNANDEZ
Ana Paulina Barba de la Rosa
Antonio de León Rodríguez
Acceso Abierto
Atribución-NoComercial-SinDerivadas
https://doi.org/10.1016/j.pep.2017.12.002
Angiogenesis
Constitutive expression
Multi-copy expression strain
Spheroids
Vasostatin
"Vasostatin 30 (Vs30) is an active fragment derived from the N-terminal region (135–164 aa) of human calreticulin and has the ability to inhibit angiogenesis. In this work, the expression of Vs30 was performed using a protease-deficient strain of the methylotrophic yeast Pichia pastoris. The vs30 gene was optimized for P. pastoris preferential codon usage and inserted into constitutive expression vector pGAPZ?A. In addition, a plasmid with four copies of the expression cassette was obtained and transformed into P. pastoris. The flask fermentation conditions were: culture volume of 25 mL in 250 mL baffled flasks at 28 °C, pH 6 and harvest time of 48 h. Up to 21.07 mg/L Vs30 were attained and purified by ultrafiltration with a 30-kDa cut-off membrane and the recovery was 49.7%. Bioactivity of Vs30 was confirmed by the inhibition of cell proliferation, as well as the inhibition of the capillary-like structures formation of EA.hy926 cells in vitro. This work constitutes the first report on the expression of Vs30 in Pichia pastoris using a constitutive promoter and multi-copy approach such as strategies to improve the recombinant Vs30 expression."
Elsevier
2018
Artículo
Sergio Calderon-Salais, Prisiliana Velazquez-Bernardino, Victor E. Balderas-Hernandez, Ana P. Barba de la Rosa, Antonio De Leon-Rodriguez, Constitutive expression of the active fragment of human vasostatin Vs30 in Pichia pastoris SMD1168H, Protein Expression and Purification, Volume 144, 2018, Pages 40-45., https://doi.org/10.1016/j.pep.2017.12.002
BIOQUÍMICA
Versión revisada
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Aparece en las colecciones: Publicaciones Científicas Biología Molecular

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