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General Transcription Factors

General Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...

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Tissue Specificity in Social Context-Dependent lysozyme Expression in Bumblebees.

H Michael G Lattorff^1,2,3

¹International Centre of Insect Physiology and Ecology (icipe), Nairobi 00100, Kenya.

Antibiotics (Basel, Switzerland)

|April 5, 2020

Summary

Social bumblebees adjust their immune gene expression based on living density. This study reveals tissue-specific responses in lysozyme gene expression, highlighting adaptation to social environments.

Keywords:

Bombus terrestris cage experiment social context social environment social immunity

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Area of Science:

Ecology
Immunology
Genetics

Background:

Group living in social insects, like bumblebees (Bombus terrestris), increases pathogen transmission risk due to high densities and frequent interactions.
Social insects possess adaptable immune systems to manage disease spread risks.
Previous studies in bumblebees showed increased immune activity and gene expression in group-housed individuals as a prophylactic measure.

Purpose of the Study:

To investigate how the social environment (individual density) affects the gene expression of two lysozyme genes in bumblebees.
To determine if lysozyme gene expression varies across different tissues (gut, fat body) in response to social conditions.

Main Methods:

Analyzing the expression patterns of two specific lysozyme genes in bumblebees.
Comparing gene expression in individuals housed at different densities.
Examining gene expression in distinct tissue types: gut and fat body.

Main Results:

Gene expression of lysozyme is significantly influenced by the specific gene, individual density, and tissue type.
A notable interaction effect was found between tissue type and other factors influencing lysozyme gene expression.
This study reports the first evidence of a tissue-specific immune response to the social environment in bumblebees.

Conclusions:

The social environment plays a crucial role in regulating immune gene expression in bumblebees.
Lysozyme gene expression is context-dependent, varying by gene, density, and tissue.
Findings suggest sophisticated gene regulation mechanisms that respond to social cues, crucial for managing disease risk in social insects.