Related Experiment Video
Updated: May 13, 2026
Light Sheet-based Fluorescence Microscopy of Living or Fixed and Stained Tribolium castaneum Embryos
Published on: April 28, 2017
The two Tribolium E(spl) genes show evolutionarily conserved expression and function during embryonic neurogenesis.
Kristina Kux1, Marianthi Kiparaki, Christos Delidakis
1Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas and Department of Biology, University of Crete, Heraklion, Crete, Greece.
In Tribolium castaneum, E(spl)1 and E(spl)3 proteins are crucial for proper neurogenesis. Double knockdown of these genes disrupts neuroblast formation, highlighting their essential and redundant roles in insect development.
Area of Science:
- Developmental Biology
- Neuroscience
- Genetics
Background:
- Tribolium castaneum exhibits a short germ-band embryonic development, differing from Drosophila.
- Early neurogenesis mechanisms, including proneural cluster formation and bHLH activators like Ash, show conservation with Drosophila.
- Notch signaling and bHLH-O repressors, such as E(spl) genes, regulate neuroblast সংখ্যা in Drosophila.
Purpose of the Study:
- Investigate the expression and function of two bHLH-O repressor proteins, E(spl)1 and E(spl)3, in Tribolium castaneum.
- Determine the role of E(spl)1 and E(spl)3 in embryonic neurogenesis and their relationship with Ash and Notch signaling.
- Examine the evolutionary conservation of E(spl) protein functions with Drosophila.
Main Methods:
- Studied the expression patterns of E(spl)1 and E(spl)3 during Tribolium embryonic neurogenesis.
- Performed gene knockdown experiments (single and double) for E(spl)1 and E(spl)3.
- Analyzed neurogenesis defects resulting from gene knockdowns, comparing them to Notch loss-of-function phenotypes.
- Investigated the interaction of E(spl) proteins with proneural proteins Scute and Daughterless.
Main Results:
- E(spl)1 and E(spl)3 are the sole E(spl) homologues in Tribolium and are expressed in the cephalic and ventral neuroectoderm.
- Their expression initiates early in neurogenesis, dependent on Ash and Notch activities.
- Double knockdown of E(spl)1 and E(spl)3, but not single knockdowns, caused neurogenesis defects comparable to Notch loss-of-function.
- These proteins interact with proneural proteins Scute and Daughterless, indicating conserved functions.
Conclusions:
- E(spl)1 and E(spl)3 function redundantly to restrict neuroblast formation in Tribolium.
- Their activity is regulated by Ash and Notch signaling, similar to their Drosophila counterparts.
- These findings underscore the evolutionary conservation of key neurogenesis regulatory mechanisms across insect species.
More Related Videos
11:13Stem cell-like Xenopus Embryonic Explants to Study Early Neural Developmental Features In Vitro and In Vivo
Published on: February 2, 2016
12:01Induction of Protein Deletion Through In Utero Electroporation to Define Deficits in Neuronal Migration in Transgenic Models
Published on: January 12, 2015
