Campus Units
Animal Science
Document Type
Article
Publication Version
Published Version
Publication Date
10-13-2016
Journal or Book Title
PLoS ONE
Volume
11
Issue
10
First Page
e0164575
DOI
10.1371/journal.pone.0164575
Abstract
Acute heat stress requires immediate adjustment of the stressed individual to sudden changes of ambient temperatures. Chickens are particularly sensitive to heat stress due to development of insufficient physiological mechanisms to mitigate its effects. One of the symptoms of heat stress is endotoxemia that results from release of the lipopolysaccharide (LPS) from the guts. Heat-related cytotoxicity is mitigated by the innate immune system, which is comprised mostly of phagocytic cells such as monocytes and macrophages. The objective of this study was to analyze the molecular responses of the chicken macrophage-like HD11 cell line to combined heat stress and lipopolysaccharide treatment in vitro. The cells were heat-stressed and then allowed a temperature-recovery period, during which the gene expression was investigated. LPS was added to the cells to mimic the heat-stress-related endotoxemia. Semi high-throughput gene expression analysis was used to study a gene panel comprised of heat shock proteins, stress-related genes, signaling molecules and immune response genes. HD11 cell line responded to heat stress with increased mRNA abundance of the HSP25, HSPA2 and HSPH1 chaperones as well as DNAJA4 and DNAJB6 co-chaperones. The anti-apoptotic gene BAG3 was also highly up-regulated, providing evidence that the cells expressed pro-survival processes. The immune response of the HD11 cell line to LPS in the heat stress environment (up-regulation of CCL4, CCL5, IL1B, IL8 and iNOS) was higher than in thermoneutral conditions. However, the peak in the transcriptional regulation of the immune genes was after two hours of temperature-recovery. Therefore, we propose the potential influence of the extracellular heat shock proteins not only in mitigating effects of abiotic stress but also in triggering the higher level of the immune responses. Finally, use of correlation networks for the data analysis aided in discovering subtle differences in the gene expression (i.e. the role of the CASP3 and CASP9 genes).
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Copyright Owner
Slawinska et al.
Copyright Date
2016
Language
en
File Format
application/pdf
Recommended Citation
Slawinska, Anna; Hsieh, John C.; Schmidt, Carl J.; and Lamont, Susan J., "Heat Stress and Lipopolysaccharide Stimulation of Chicken Macrophage-Like Cell Line Activates Expression of Distinct Sets of Genes" (2016). Animal Science Publications. 586.
https://lib.dr.iastate.edu/ans_pubs/586
Comments
This article is published as Slawinska, Anna, John C. Hsieh, Carl J. Schmidt, and Susan J. Lamont. "Heat stress and lipopolysaccharide stimulation of chicken macrophage-like cell line activates expression of distinct sets of genes." PLoS One 11, no. 10 (2016): e0164575. DOI: 10.1371/journal.pone.0164575. Posted with permission.