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New cytokines and TLR pathway signaling molecules in Chinese rare minnow (Gobiocypris rarus): Molecular characterization, basal expression, and their response to chlorpyrifos
- Source :
- Chemosphere. 199
- Publication Year :
- 2017
-
Abstract
- In this study, the cDNA fragments of cytokines (il-8) and toll-like receptor (TLR) pathway signaling molecules (myd88, irak-1, irf5, and irf7) in the Chinese rare minnow were cloned and exhibited a high amino-acid sequence identity compared to other cyprinid fish orthologs. The mRNA expressions of these genes in the different tissues (liver, brain, spleen, kidney, and skin) were observed. The highest expression levels of myd88, irak-1, and irf5 were detected in the spleen, whereas il-8 and irf7 were detected in the kidney and liver respectively. The mRNA expression of irak-1, irf5, and irf7 in the liver from 0.1 μg/L and 0.5 μg/L CPF treatments were significantly increased on day 7 (p < 0.05), whereas the levels of only irak-1 and irf7 were markedly increased on day 28 (p < 0.05). Moreover, the mRNA expression of il-8 in the spleen following 0.5 μg/L CPF treatments was significantly decreased on day 7 (p < 0.05), whereas significantly decrease were observed in the levels of irf7 in the spleen at 2.5 μg/L CPF on days 7 and 28 (p < 0.05). The 0.1 μg/L and 0.5 μg/L of CPF significantly induced the levels of irak-1 and myd88 in the spleen after 28 d exposure (p < 0.05). Therefore, the high induction of cytokines and TLR pathway signaling molecules demonstrated that Chinese rare minnow was immune-compromised exposed to CPF. Moreover, our finding indicated that these immune-related genes could be feasible to screen for substances hazardous to the immune system of fish.
- Subjects :
- 0301 basic medicine
Insecticides
Environmental Engineering
DNA, Complementary
Time Factors
Health, Toxicology and Mutagenesis
Cyprinidae
Spleen
010501 environmental sciences
01 natural sciences
03 medical and health sciences
Immune system
medicine
Environmental Chemistry
Animals
Tissue Distribution
Amino Acid Sequence
Receptor
0105 earth and related environmental sciences
Messenger RNA
Kidney
biology
Chemistry
Toll-Like Receptors
Public Health, Environmental and Occupational Health
General Medicine
General Chemistry
biology.organism_classification
Pollution
Molecular biology
030104 developmental biology
medicine.anatomical_structure
Gobiocypris rarus
IRF7
Cytokines
Chlorpyrifos
Signal transduction
Signal Transduction
Subjects
Details
- ISSN :
- 18791298
- Volume :
- 199
- Database :
- OpenAIRE
- Journal :
- Chemosphere
- Accession number :
- edsair.doi.dedup.....392de09badfb237e70c29152832aacea