Methods for the Study of Regeneration in Stentor

Area of Science:

• Cell Biology
• Regenerative Medicine
• Developmental Biology

Background:

• Cellular damage and the need for repair are universal biological processes.
• The unicellular ciliate Stentor coeruleus serves as a valuable model for studying wound healing and regeneration.
• Recent advancements in Stentor molecular biology tools, including genome availability and RNA interference (RNAi), enable detailed investigation.

Purpose of the Study:

• To provide a comprehensive protocol for inducing and analyzing single-cell regeneration in Stentor coeruleus.
• To establish methods for culturing Stentor in large quantities for biochemical and sequencing analyses.
• To characterize the stages and dynamics of Stentor regeneration using various experimental approaches.

Main Methods:

• Establishing and maintaining Stentor cell cultures from single cells or fragments.
• Inducing regeneration through mechanical injury (glass needle) or chemical treatments (sucrose, urea).
• Imaging individual regenerating cells and employing a rubric for staging and analyzing regeneration dynamics.

Main Results:

• Demonstration of methods for studying regeneration of large cell parts and specific anterior structures.
• Visualization of regeneration dynamics reveals heterogeneity in regeneration timing across cell populations.
• Successful staging and analysis of the three-stage regeneration process in Stentor.

Conclusions:

• The provided protocol facilitates molecular-level studies of single-cell regeneration in Stentor.
• The model system allows for the investigation of cellular repair mechanisms and developmental plasticity.
• Understanding regeneration in Stentor can offer broader insights into fundamental biological processes of cell recovery and renewal.