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Related Experiment Video

Updated: Jun 4, 2026

The C. elegans Excretory Canal as a Model for Intracellular Lumen Morphogenesis and In Vivo Polarized Membrane Biogenesis in a Single Cell: labeling by GFP-fusions, RNAi Interaction Screen and Imaging

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Published on: October 3, 2017

Calcineurin may regulate multiple endocytic processes in C. elegans.

Hyun-Ok Song¹, Joohong Ahnn

¹Department of Life Science, BK21 (Life Science for Global Warming Team), College of Natural Sciences, Hanyang University, Seoul 133-791, Korea.

|February 25, 2011

Summary

Calcineurin, a key signaling enzyme, regulates specific endocytic processes in the nematode Caenorhabditis elegans, including intestinal apical endocytosis and synaptic vesicle recycling, but not oocyte receptor-mediated endocytosis.

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Area of Science:

Cell Biology
Molecular Biology
Nematode Genetics

Background:

Calcineurin is a calcium/calmodulin-dependent serine/threonine protein phosphatase involved in diverse cellular signaling pathways.
Previous research established calcineurin's role in regulating coelomocyte endocytosis in Caenorhabditis elegans.

Purpose of the Study:

To investigate the broader role of calcineurin in various endocytic processes within Caenorhabditis elegans.
To characterize the specific endocytic defects in calcineurin mutants using established in vivo assays.

Main Methods:

Utilized established in vivo assays in Caenorhabditis elegans to analyze endocytic phenotypes.
Examined endocytosis in multiple tissues, including the intestine, oocytes, and nerve cord, in calcineurin mutants.

Main Results:

Calcineurin mutants exhibited defects in apical endocytosis within the intestine.
Synaptic vesicle recycling in the nerve cord was also impaired in calcineurin mutants.
Receptor-mediated endocytosis in oocytes proceeded normally in the absence of functional calcineurin.

Conclusions:

Calcineurin's function in endocytosis is specific, affecting certain pathways but not others.
These findings highlight a selective regulatory role for calcineurin in distinct nematode endocytic processes.