1
|
Ramos-Zayas Y, Franco-Molina MA, Hernádez-Granados AJ, Zárate-Triviño DG, Coronado-Cerda EE, Mendoza-Gamboa E, Zapata-Benavides P, Ramírez-Romero R, Santana-Krymskaya SE, Tamez-Guerra R, Rodríguez-Padilla C. Immunotherapy for the treatment of canine transmissible venereal tumor based in dendritic cells pulsed with tumoral exosomes. Immunopharmacol Immunotoxicol 2018; 41:48-54. [PMID: 30334465 DOI: 10.1080/08923973.2018.1533969] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Context: Exosomes secreted by tumor cells are a good source of cellular components that stimulate the immune response, such as alarmins (mRNA, tetraspanins (CD9, CD63, CD81), heat-shock proteins, major histocompatibility complex class I molecules) and tumor-associated antigens. These properties permit to pulsed dendritic cells in the immunotherapy for many cancers types. The aim of this study was to demonstrate the use of exosomes derived from canine transmissible venereal tumor (CTVT) as an antigen to pulsed dendritic cells and its administration in dogs with CTVT as treatment against this disease. Material and methods: From primary culture of CTVT cells the exosomes were isolated and characterized by scanning electron microscopy assay, dot blot and protein quantification. The monocytes of each patient were differentiated to dendritic cells (DC) and pulsed with CTVT exosomes (CTVTE). Phagocytosis, tumor size, populations of lymphocytes and IFN-c levels were evaluated. Results: The CTVTE showed a size around 90 nm. CD81, CD63, CD9 and Hsp70 were expressed. Monocytes showed an expression of 85.71% for CD14+, 12.3% for CD80+, 0.1% for CD83+ and 0.8% for DLA-II. In DC 5.1% for CD14+, 86.7% for CD80+, 90.1% for CD83+ and 92.6% for DLA-II and a phagocytosis of 63% was obtained by FITC Dextran test. No side effects were observed in the experimental groups with our therapy. Tumor regression was of 100% at the seventh week, as well as an increase in the level of IFN-γ (142 pg/ml), and CD4+ (28%) and CD8+ (34%) cell percentage. Discusion and conclusion: These results have shown that DC pulsed with tumor exosomes induce regression of the TVT in dogs.
Collapse
Affiliation(s)
- Yareellys Ramos-Zayas
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Moisés Armides Franco-Molina
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Alex Jesús Hernádez-Granados
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Diana Ginette Zárate-Triviño
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Erika Evangelina Coronado-Cerda
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Edgar Mendoza-Gamboa
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Pablo Zapata-Benavides
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Rafael Ramírez-Romero
- b Veterinary and Zootechnics Faculty , Autonomous University of Nuevo León (UANL) , Cd Gral Escobedo , NL , México
| | - Silvia Elena Santana-Krymskaya
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Reyes Tamez-Guerra
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| | - Cristina Rodríguez-Padilla
- a Virology and Immunology Laboratory, Biological Science Faculty , Autonomous University of Nuevo León (UANL) , San Nicolás de los Garza , NL , México
| |
Collapse
|