EOR-1/PLZF promotes WAH-1/AIF-dependent compartment-specific corpse clearance
Nathan Rather1, Aladin Elkhalil1, Melvin Williams2
1The University of Texas at Arlington, Arlington, TX, USA.
Cell Death Discovery
|November 27, 2025
Summary
The transcription factor EOR-1/PLZF regulates Compartmentalized Cell Elimination (CCE) in C. elegans by controlling corpse clearance and DNA degradation. This study reveals new insights into programmed cell death and its regulation.
Area of Science:
- Cell Biology
- Developmental Biology
- Genetics
Background:
- Programmed cell death (PCD) is essential for development and homeostasis.
- Compartmentalized Cell Elimination (CCE) is a non-canonical apoptotic process observed in C. elegans tail-spike epithelial cells (TSCs).
- Previous research implicated EOR-1 in programmed cell killing, but its role in CCE was undefined.
Purpose of the Study:
- To define the role of transcription factor EOR-1/PLZF in CCE.
- To elucidate the molecular mechanisms by which EOR-1 regulates CCE, focusing on corpse clearance.
- To identify new factors involved in CCE and understand their functions.
Main Methods:
- Genetic analysis in C. elegans to study the function of EOR-1 and WAH-1 in CCE.
- Microscopy to observe cell morphology, corpse internalization, and phagosome maturation.
- Analysis of apoptotic corpse recognition signals (phosphatidylserine) and DNA degradation.
Main Results:
- EOR-1/PLZF acts as a compartment-specific regulator of CCE, functioning downstream of caspase activity.
- EOR-1 positively regulates WAH-1/AIF, a key factor in corpse recognition-internalization and phagosome maturation.
- Absence of EOR-1 or WAH-1 leads to un-internalized TSC soma with exaggerated nuclei; absence of CPS-6/Endonuclease G causes corpse arrest during phagolysosomal maturation.
Conclusions:
- EOR-1/PLZF is a critical transcriptional regulator of CCE, controlling multiple steps of corpse clearance.
- WAH-1/AIF plays a significant role in soma-specific clearance during CCE, including DNA degradation.
- This study expands the understanding of transcriptional regulation in programmed cell death and corpse clearance mechanisms.
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