Efficient secretion of a modified E7 protein from human papilloma virus type-16 by Lactococcus lactis

Quistián Martínez, Deyanira y Villatoro Hernández, Julio y Loera Arias, María de Jesús y Rangel Colmenero, Blanca Rocío y Zavala Flores, Laura Mireya y Sepúlveda Saavedra, Julio y Guzmán López, Santos y Elizondo Omaña, Rodrigo Enrique y Montes de Oca Luna, Roberto y Saucedo Cárdenas, Odila (2010) Efficient secretion of a modified E7 protein from human papilloma virus type-16 by Lactococcus lactis. Letters in applied microbiology, 51. pp. 383-387. ISSN 0266-8254

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Resumen

Aims: To create and provide a strain of the food-grade bacterium Lactococcus lactis able to efficiently secrete a modified form of the E7 protein from the human papilloma virus (HPV) type-16. Methods and Results: We cloned the coding sequence of a modified E7 (E7m)from the HPV-16 in a plasmid regulated by the strong expression promoter p59. Secretion of the E7m was made by the signal peptide of the usp45 gene.The E7m was detected by Western blot in the cell-free-medium fraction, showing no degradation or aberrant forms. Conclusions: We constructed a strain of L. lactis able to secrete efficiently aHPV-16 E7 modified protein with diminished transforming activity. Significance and Impact of the Study: Human papilloma virus infection is associated with more than 99% of cervical cancers. Immunotherapy targeting E7 to treat HPV-associated cervical malignancies has been demonstrated to be highly efficient. However, native E7 maintains transforming activity. We present this new strain of a food-grade bacterium able to efficiently secrete a HPV-16 E7-modified protein with diminished transforming activity. This new strain could be used as a live vaccine to deliver E7 at a mucosal level and generate antitumour immune responses against HPV-associated tumours.

Tipo de elemento: Article
Palabras claves no controlados: Antitumour protection, HPV-16, Lactococcus lactis, Modified E7, Secretion
Materias: G Geografía, Antropología, Recreación > GV Deportes y Recreación
Divisiones: Organización Deportiva
Usuario depositante: Dra. Blanca Rocio Rangel
Creadores:
CreadorEmailORCID
Quistián Martínez, DeyaniraNO ESPECIFICADONO ESPECIFICADO
Villatoro Hernández, JulioNO ESPECIFICADONO ESPECIFICADO
Loera Arias, María de JesúsNO ESPECIFICADONO ESPECIFICADO
Rangel Colmenero, Blanca RocíoNO ESPECIFICADONO ESPECIFICADO
Zavala Flores, Laura MireyaNO ESPECIFICADONO ESPECIFICADO
Sepúlveda Saavedra, JulioNO ESPECIFICADONO ESPECIFICADO
Guzmán López, SantosNO ESPECIFICADONO ESPECIFICADO
Elizondo Omaña, Rodrigo Enriquerod_omana@yahoo.comNO ESPECIFICADO
Montes de Oca Luna, RobertoNO ESPECIFICADONO ESPECIFICADO
Saucedo Cárdenas, OdilaNO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 10 Jun 2015 22:54
Última modificación: 17 Ene 2017 17:12
URI: http://eprints.uanl.mx/id/eprint/5409

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