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Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing Drosophila Epithelia During Pupal Stages

Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing Drosophila Epithelia During Pupal Stages

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Drosophila ELYS regulates Dorsal dynamics during development.

Saurabh Jayesh Kumar Mehta¹, Vimlesh Kumar², Ram Kumar Mishra¹

¹Nups and SUMO Biology Group, Department of Biological Sciences, Academic Building 3, Indian Institute of Science Education and Research-Bhopal, Bhopal By-pass Road, Bhauri, Bhopal, Madhya Pradesh-462066, India.

The Journal of Biological Chemistry

|January 17, 2020

Summary

This summary is machine-generated.

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Embryonic large molecule derived from yolk sac (ELYS) protein is crucial for nuclear pore assembly. Its depletion in Drosophila causes developmental defects by reactivating the Dorsal pathway and inducing apoptosis.

Area of Science:

Cell Biology
Developmental Biology
Genetics

Background:

Embryonic large molecule derived from yolk sac (ELYS) is a nuclear pore protein essential for nuclear pore complex assembly.
ELYS initiates the formation of functional nuclear pores at the end of mitosis.

Purpose of the Study:

To investigate the role of the ELYS ortholog (dElys) in Drosophila development.
To elucidate the molecular mechanisms underlying dElys-mediated developmental regulation.

Main Methods:

Utilized cellular, molecular, and genetic techniques, including fluorescence and electron microscopy, quantitative PCR, and RNAi-mediated depletion.
Analyzed dElys localization during the cell cycle and its impact on nuclear structures.

Main Results:

Keywords:

Drosophila Drosophila genetics NF-κB transcription factor development nuclear envelope nuclear organization nuclear pore nuclear structure nuclear translocation

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dElys depletion in Drosophila resulted in aberrant development, nuclear pore, and nuclear lamina assembly defects.
Depletion of dElys led to re-activation of the Dorsal (NF-κB) pathway and untimely expression of its target genes.
Activated Dorsal triggered apoptosis by up-regulating pro-apoptotic genes (reaper and hid), causing developmental abnormalities.

Conclusions:

dElys plays critical roles in Drosophila development, influencing nuclear pore formation and pathway regulation.
A novel epistatic interaction between dElys and the Dorsal pathway regulates developmental apoptosis.
dElys possesses a DNA-binding motif, suggesting a direct role in gene regulation or chromatin organization.