Safety and immunological effects of recombinant canine IL-15 in dogs.
Cytokine
; 148: 155599, 2021 12.
Article
in En
| MEDLINE
| ID: mdl-34103211
ABSTRACT
Interleukin-15 (IL-15) is a pleiotropic cytokine that plays pivotal roles in innate and adaptive immunity. It is also a promising cytokine for treating cancer. Despite growing interest in its use as an immunotherapeutic, its safety and immunological effects in dogs have not been reported. In this study, healthy dogs were given recombinant canine IL-15 (rcIL-15) intravenously at a daily dose of 20 µg/kg for 8 days and monitored for 32 days to determine the safety and immunological effects of rcIL-15. The repeated administration of rcIL-15 was well tolerated, did not cause any serious side effects, and promoted the selective proliferation and activation of canine anti-cancer effector cells, including CD3+CD8+ cytotoxic T lymphocytes, CD3+CD5dimCD21-, and non-B/non-T NK cell populations, without stimulating Treg lymphocytes. The rcIL-15 injections also stimulated the expression of molecules and transcription factors associated with the activation and effector functions of NK cells, including CD16, NKG2D, NKp30, NKp44, NKp46, perforin, granzyme B, Ly49, T-bet, and Eomes. These results suggest that rcIL-15 might be a valuable therapeutic adjuvant to improve immunity against cancer in dogs.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Recombinant Proteins
/
Interleukin-15
Limits:
Animals
/
Humans
Language:
En
Journal:
Cytokine
Journal subject:
ALERGIA E IMUNOLOGIA
Year:
2021
Document type:
Article