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Quantification of the Respiratory Burst Response as an Indicator of Innate Immune Health in Zebrafish

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Alternative adaptive immunity in invertebrates.

Joachim Kurtz¹, Sophie A O Armitage

¹ETH Zürich, Institute for Integrative Biology, Experimental Ecology, ETH-Zentrum, CHN J12.1, CH-8092 Zürich, Switzerland. joachim.kurtz@env.ethz.ch

Trends in Immunology

|September 19, 2006

Summary

Invertebrates may possess immune memory. A study shows Anopheles gambiae mosquitoes have a Down syndrome cell adhesion molecule (Dscam) that functions similarly to antibodies, providing challenge-specific protection.

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Area of Science:

Immunology
Invertebrate Biology
Molecular Biology

Background:

Vertebrate adaptive immunity relies on immunological receptors like antibodies for specific, long-term protection.
The capacity for similar immune memory and phenotypic plasticity in invertebrates remains a significant scientific question.

Purpose of the Study:

To investigate the immune mechanisms in invertebrates, specifically Anopheles gambiae mosquitoes.
To determine if any invertebrate molecules exhibit characteristics analogous to vertebrate antibodies in immune surveillance.

Main Methods:

The study focused on the Anopheles gambiae mosquito model.
Analysis of the Down syndrome cell adhesion molecule (Dscam) and its role in immune surveillance was central to the research.

Main Results:

The Down syndrome cell adhesion molecule (Dscam) was identified as a key immune surveillance factor in Anopheles gambiae.
Dscam exhibits characteristics comparable to antibodies found in vertebrate immune systems.

Conclusions:

Anopheles gambiae mosquitoes possess an immune factor, Dscam, with antibody-like functions.
This finding suggests a potential for immune memory and adaptive responses in invertebrates, challenging previous assumptions.