Related Experiment Video
Updated: Jun 7, 2026
11:13
RNA-Seq Analysis of Differential Gene Expression in Electroporated Chick Embryonic Spinal Cord
Published on: November 1, 2014
Human and chicken TLR pathways: manual curation and computer-based orthology analysis
Marc Gillespie1, Veronica Shamovsky, Peter D'Eustachio
1College of Pharmacy and Allied Health Professions, St. John's University, 8000 Utopia Parkway, Queens, NY 11439, USA.
Summary
Researchers annotated chicken Toll-like receptor (TLR) functions, integrating computational and manual methods. This study advances understanding of avian innate immunity and virus-activated signaling pathways for antiviral strategies.
Area of Science:
- Immunology
- Genomics
- Bioinformatics
Background:
- Toll-like receptors (TLRs) are crucial for innate immunity against pathogens.
- The Reactome Knowledgebase previously integrated human TLR functions with other biological processes.
- Avian TLR repertoires include both orthologs and novel genes compared to mammals.
Purpose of the Study:
- To annotate TLR molecular functions in chickens (Gallus gallus) using integrated methods.
- To evaluate computationally generated annotations projected from human to avian species.
- To support systems biology approaches for analyzing virus-activated signaling pathways.
Main Methods:
- Manual expert curation of chicken TLRs.
- Computer-based orthology analysis for gene identification.
- Integration of annotations with external biological databases (e.g., PubMed, UniProt).
Main Results:
- Generated a comprehensive set of TLR molecular function annotations for Gallus gallus.
- Demonstrated the utility of combined manual and computational approaches for cross-species annotation.
- Validated TLR3 as a model for understanding avian antiviral responses.
Conclusions:
- The study provides a valuable resource for avian immunology research.
- Findings support systems biology approaches for dissecting innate immune responses.
- This work aids in identifying potential antiviral targets and strategies.
More Related Videos
Related Concept Videos
02:54Evolutionary Relationships through Genome Comparisons
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
02:02Cis-regulatory Sequences
Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...