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Roh JH, Bui NA, Lee HS, Bui VN, Dao DT, Vu TT, Hoang TT, So KM, Yi SW, Kim E, Hur TY, Oh SI. Age-dependent immune response in pigs against foot-and-mouth disease virus in vitro. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2021; 63:1376-1385. [PMID: 34957451 PMCID: PMC8672249 DOI: 10.5187/jast.2021.e103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 08/20/2021] [Accepted: 09/01/2021] [Indexed: 12/20/2022]
Abstract
Foot-and-mouth disease, one of the most contagious diseases in cloven-hoofed
animals, causes significant economic losses. The pathogenesis of foot-and-mouth
disease virus (FMDV) infection is known to differ with age of the animals. In
this study, we aimed to reveal the difference in immunological response in the
initial stage of FMDV infection between piglets and adult pigs. Peripheral blood
mononuclear cells (PBMCs) were isolated from 3 piglets (8 weeks old) and 3 pigs
(35 weeks old) that were not vaccinated against FMDV. O-type FMDV (2 ×
102 median tissue culture infectious dose) was inoculated into
porcine PBMCs and the cells were incubated at 37.0°C under 5%
CO2 for various time periods (0, 1, 3, 6, 12, 24, and 48 h). The
total RNA was obtained from the FMDV-inoculated PBMCs after each time point, and
the virus titer was investigated in these RNA samples. Furthermore, dynamics of
mRNA expression of the six tested cytokines (interferon [IFN]-α,
IFN-γ, interleukin [IL]-6, IL-8, IL-10, and tumor necrosis factor
[TNF]-α) in FMDV-inoculated porcine PBMCs were evaluated by time-series
analysis to determine the differences, if any, based on the age of the pigs. The
PBMCs of piglets contained the highest quantity of FMDV mRNA at 6 hours
post-inoculation (hpi), and the PBMCs of pigs had the highest quantity of FMDV
mRNA at 3 hpi. The mean cycle threshold-value in the PBMCs steadily decreased
after the peak time point in the piglets and pigs (6 and 3 hpi, respectively).
The dynamics of mRNA expression of all cytokines except TNF-α showed
age-dependent differences in FMDV-inoculated PBMCs. The mRNA expression of most
cytokines was more pronounced in the piglets than in the pigs, implying that the
immune response against FMDV showed an age-dependent difference in pigs. In
conclusion, within 48 hpi, the 8-week-old piglets responded more rapidly and
were more sensitive to FMDV infection than the 35-week-old pigs, which could be
associated with the difference in the pathogenesis of FMDV infection among the
pigs. These results provide valuable insights into the mechanisms underlying the
age-dependent differences in immune response in pigs against FMDV infection.
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Affiliation(s)
- Jae-Hee Roh
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea.,Department of Pet Health, Kwangju Women's University, Gwangju 62396, Korea
| | - Ngoc Anh Bui
- Virology Department, National Institute of Veterinary Research, Hanoi 100000, Vietnam
| | - Hu Suk Lee
- International Livestock Research Institute (ILRI), Hanoi 111111, Vietnam
| | - Vuong Nghia Bui
- Virology Department, National Institute of Veterinary Research, Hanoi 100000, Vietnam
| | - Duy Tung Dao
- Virology Department, National Institute of Veterinary Research, Hanoi 100000, Vietnam
| | - Thanh Thi Vu
- Virology Department, National Institute of Veterinary Research, Hanoi 100000, Vietnam
| | - Thuy Thi Hoang
- Virology Department, National Institute of Veterinary Research, Hanoi 100000, Vietnam
| | - Kyoung-Min So
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Seung-Won Yi
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Eunju Kim
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Tai-Young Hur
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Sang-Ik Oh
- Division of Animal Diseases & Health, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
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Sharma AK, Bhatt M, Sankar M, Mohapatra JK, Dash BB, Gowane GR, Subramaniam S, Ranjan R, Pattnaik B. Kinetics of Interferon gamma and Interleukin-21 response following foot and mouth disease virus infection. Microb Pathog 2018; 125:20-25. [PMID: 30145254 DOI: 10.1016/j.micpath.2018.08.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/21/2018] [Accepted: 08/23/2018] [Indexed: 10/28/2022]
Abstract
Foot and mouth disease (FMD) is one of the most contagious diseases of cloven footed animals causing significant economic impediment in livestock production system. The immune response to FMD virus (FMDV) infection is regulated by a complex interplay between various cells, cytokines and other immune components. Based on the well established role of Interferon-gamma (IFN-γ) and Interleukin-21 (IL-21) in viral infections, this study aimed to determine expression level of these cytokines in clinically infected adults and calves; and the results were compared with those in the subclinically infected animals up to 120 days post outbreak (DPO) in a vaccinated cattle herd. The expression level of IFN-γ and IL-21 was assayed on 0, 7, 14, 28, 60, 90, and 120 DPO by enzyme linked immunosorbent assay (ELISA) with simultaneous assessment of FMDV structural protein-antibody titer against serotype 'O' by liquid phase blocking ELISA (LPBE) and nonstructural protein-antibody, a differential marker of infection, using r3AB3 indirect ELISA (r3AB3 I-ELISA). Although, the peak expression of IFN-γ was observed on 14 DPO across all categories of animals, the clinically infected animals registered a significant increase in IFN-γ level as compared to the subclinically infected population possibly due to the difference in the extent of virus replication and inflammation. The IL-21 level increased significantly during 14-28 DPO and highest expression was noticed on 28 DPO. The increase in the expression level of IFN-γ and IL-21 at 28 DPO correlated with the increase in antibody titer as determined by LPBE suggesting the role of these cytokines in augmenting immune response to FMDV infection.
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Affiliation(s)
- Ajay Kumar Sharma
- ICAR-Indian Veterinary Research Institute, Mukteswar Campus Uttarakhand, 263 138, India
| | - Mukesh Bhatt
- ICAR-Indian Veterinary Research Institute, Mukteswar Campus Uttarakhand, 263 138, India
| | - Muthu Sankar
- ICAR-Indian Veterinary Research Institute, Mukteswar Campus Uttarakhand, 263 138, India.
| | | | - Bana B Dash
- ICAR-Project Directorate of FMD, Mukteswar, Uttarakhand, 263 138, India
| | - Gopal R Gowane
- ICAR-Central Sheep & Wool Research Institute, Avikanagar, 304501, Rajasthan, India
| | | | - Rajeev Ranjan
- ICAR-Project Directorate of FMD, Mukteswar, Uttarakhand, 263 138, India
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