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Cloning of TLR3 isoform
Eunjeong Yang1, Jeon-Soo Shin, Hyemi Kim
1Department of Microbiology, Yonsei University College of Medicine, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-752, Korea.
Yonsei Medical Journal
|May 1, 2004
Summary
A newly identified Toll-like receptor (TLR) 3 isoform, shorter than the full-length version, is expressed in human cells. This TLR3 isoform may play a distinct role in the brain's immune response.
Area of Science:
- Immunology
- Molecular Biology
- Neuroscience
Background:
- Toll-like receptor (TLR) 3 is crucial for innate immunity, recognizing viral pathogens.
- TLRs are key components of the immune system's defense against infections.
Purpose of the Study:
- To report the discovery and characterization of a novel TLR3 isoform.
- To investigate the expression and potential function of this TLR3 isoform in human cells, particularly in the brain.
Main Methods:
- Analysis of cDNA sequences to identify variations in TLR3.
- Expression analysis in primary human cells and cell lines, including astrocytes and glioblastoma cells.
Main Results:
- A TLR3 isoform, 2,520 bp in length, was identified, differing from the full cDNA (2,712 bp) by an intron-like sequence deletion in exon 4.
- This TLR3 isoform is co-expressed with wild-type TLR3 in primary human astrocytes and glioblastoma cell lines.
Conclusions:
- The identified TLR3 isoform represents a distinct molecular variant of the innate immune receptor.
- Co-expression in astrocytes suggests a potentially unique immunological function for this TLR3 isoform in the central nervous system's response to ligands.