How Hormones Affect Immune Response in Silkworms
Author Information
Author(s): Tian Ling, Guo Enen, Diao Yupu, Zhou Shun, Peng Qin, Cao Yang, Ling Erjun, Li Sheng
Primary Institution: Key Laboratory of Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences
Hypothesis
Juvenile hormone (JH) acts as an immune-activator while 20-hydroxyecdysone (20E) inhibits innate immunity in the Bombyx fat body during postembryonic development.
Conclusion
JH enhances immune response while 20E suppresses it in silkworms.
Supporting Evidence
- Microarray analysis revealed 6 antimicrobial peptide genes were up-regulated at high JH levels.
- JH treatment increased AMP mRNA levels and antibacterial activities.
- 20E treatment decreased AMP mRNA levels and activities.
Takeaway
In silkworms, one hormone helps the immune system work better, while another hormone makes it weaker.
Methodology
Genome-wide microarray analysis and hormone treatment experiments were conducted to assess gene expression and immune activity.
Potential Biases
Potential bias in hormone treatment effects and the interpretation of microarray data.
Limitations
The study primarily focuses on the fat body and may not represent immune responses in other tissues.
Participant Demographics
Silkworm larvae (Bombyx mori) were used in the study.
Statistical Information
P-Value
0.01 < p < 0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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