Related Experiment Video

Updated: Jun 2, 2026

Observing Mitotic Division and Dynamics in a Live Zebrafish Embryo
10:10

Observing Mitotic Division and Dynamics in a Live Zebrafish Embryo

Published on: July 15, 2016

The apoptotic regulator Nrz controls cytoskeletal dynamics via the regulation of Ca2+ trafficking in the zebrafish

Nikolay Popgeorgiev1, Benjamin Bonneau, Karine F Ferri

  • 1CRCL U1052 INSERM, UMS 3443 CNRS, Centre Léon Bérard, 28 rue Laennec, 69008 Lyon, France.

Developmental Cell
|May 17, 2011
PubMed

Insights

The Bcl-2 family protein Nrz regulates early zebrafish development by controlling calcium (Ca2+) release from the endoplasmic reticulum, impacting cell movement and preventing developmental arrest.

Area of Science:

  • Developmental Biology
  • Cellular Biology
  • Molecular Biology

Background:

  • Bcl-2 family proteins are primarily known as apoptosis regulators.
  • Their roles in other cellular processes, particularly early development, are less understood.
  • The specific function of Bcl-2 homologs beyond apoptosis control remains an area for exploration.

Purpose of the Study:

  • To investigate the role of the Bcl-2 homolog Nrz in early zebrafish development.
  • To elucidate the molecular mechanisms by which Nrz influences embryonic development.
  • To explore the involvement of Bcl-2 family members in non-apoptotic cellular processes.

Main Methods:

  • Studied Nrz localization in developing zebrafish, specifically in the yolk syncytial layer.
  • Performed Nrz knockdown experiments to observe developmental consequences.
  • Analyzed calcium (Ca2+) levels and interactions with the IP3R1 Ca2+ channel in the endoplasmic reticulum.

Main Results:

  • Nrz knockdown led to developmental arrest before gastrulation.
  • This arrest was caused by increased free Ca2+ in the yolk cell, activating myosin light chain kinase.
  • Nrz was found to interact with the IP3R1 Ca2+ channel, preventing Ca2+ release from the endoplasmic reticulum.

Conclusions:

  • Nrz plays a crucial role in early zebrafish development by regulating intracellular Ca2+ fluxes.
  • Bcl-2 family proteins can influence cytoskeletal dynamics and cell movements via Ca2+ signaling.
  • This highlights a novel function for the Bcl-2 family in early embryonic development beyond apoptosis regulation.

More Related Videos

Generation of Naïve Blastoderm Explants from Zebrafish Embryos07:21

Generation of Naïve Blastoderm Explants from Zebrafish Embryos

Published on: July 30, 2021

Immunostaining Phospho-epitopes in Ciliated Organs of Whole Mount Zebrafish Embryos08:42

Immunostaining Phospho-epitopes in Ciliated Organs of Whole Mount Zebrafish Embryos

Published on: February 19, 2016

Related Concept Videos

Cell Motility through Blebbing01:16

Cell Motility through Blebbing

Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker proteins that...