PMID- 26073049 OWN - NLM STAT- MEDLINE DCOM- 20151217 LR - 20171116 IS - 1520-5118 (Electronic) IS - 0021-8561 (Linking) VI - 63 IP - 26 DP - 2015 Jul 8 TI - Aflatoxin B1 Suppressed T-Cell Response to Anti-pig-CD3 Monoclonal Antibody Stimulation in Primary Porcine Splenocytes: A Role for the Extracellular Regulated Protein Kinase (ERK1/2) MAPK Signaling Pathway. PG - 6094-101 LID - 10.1021/acs.jafc.5b00433 [doi] AB - The aim of the present study is to investigate whether aflatoxin B1 (AFB1)-induced immunotoxicity is associated with oxidative stress and the expression of extracellular regulated protein kinases (ERK) 1/2. The primary splenocytes isolated from healthy pigs were activated and proliferated by anti-pig-CD3 monoclonal antibodies (mAb) in the present experiment, which is an antigen-specific stimulant. Results indicated that cell proliferation and interleukin-2 (IL-2) production were significantly suppressed by AFB1 from 4 to 8 mug/mL in a dose-dependent manner compared to the control group. Furthermore, AFB1 significantly increased malondialdehyde (MDA) levels, decreased reduced glutathione (GSH) and total superoxide dismutase levels, and up-regulated p-ERK1/2 expression in the activated splenocytes. N-Acetyl-l-cysteine blocked anti-CD3-induced T-cell suppression by AFB1 through increasing intracellular concentrations of GSH levels, decreasing MDA levels, and down-regulated p-ERK1/2 expression, respectively. Inhibition of the ERK1/2 expression by ERK-specific iRNA attenuated the decrease of T-cell proliferation and IL-2 production induced by AFB1. It was concluded that AFB1 inhibits anti-CD3-induced lymphocyte proliferation and IL-2 production by the oxidative stress mediated ERK1/2 MAPK signaling pathway. FAU - Hao, Shu AU - Hao S AD - Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing 210095, China. FAU - Pan, Shengchi AU - Pan S AD - Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing 210095, China. FAU - Hu, Junfa AU - Hu J AD - Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing 210095, China. FAU - Qian, Gang AU - Qian G AD - Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing 210095, China. FAU - Gan, Fang AU - Gan F AD - Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing 210095, China. FAU - Huang, Kehe AU - Huang K AD - Institute of Nutritional and Metabolic Disorders in Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing 210095, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150624 PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 0 (Antibodies, Monoclonal) RN - 0 (CD3 Complex) RN - 9N2N2Y55MH (Aflatoxin B1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) SB - IM MH - Aflatoxin B1/*toxicity MH - Animals MH - Antibodies, Monoclonal/*immunology MH - CD3 Complex/*immunology MH - MAP Kinase Signaling System/*drug effects MH - Mitogen-Activated Protein Kinase 1/genetics/immunology MH - Mitogen-Activated Protein Kinase 3/genetics/immunology MH - Spleen/*cytology/drug effects/immunology MH - Swine MH - T-Lymphocytes/drug effects/*immunology OTO - NOTNLM OT - ERK1/2 OT - RNA interference OT - aflatoxin B1 OT - anti-pig-CD3 mAb OT - primary porcine splenocytes EDAT- 2015/06/16 06:00 MHDA- 2015/12/19 06:00 CRDT- 2015/06/16 06:00 PHST- 2015/06/16 06:00 [entrez] PHST- 2015/06/16 06:00 [pubmed] PHST- 2015/12/19 06:00 [medline] AID - 10.1021/acs.jafc.5b00433 [doi] PST - ppublish SO - J Agric Food Chem. 2015 Jul 8;63(26):6094-101. doi: 10.1021/acs.jafc.5b00433. Epub 2015 Jun 24.