USP8–ACSL4 ferroptosis and senescence-like changes in chicken granulosa cells
In chicken ovarian follicular granulosa cells, the abstract reports that USP8 raises ACSL4 protein levels and promotes ferroptosis, which is associated with a senescence-like phenotype; ACSL4 knockdown reversed these effects. [1]
Automatic summary · not editorially reviewed
The key findings
In chicken follicular granulosa cells, loss- and gain-of-function assays indicated that USP8 positively modulates ferroptosis. [1]
USP8 regulates ACSL4 ubiquitination and proteasomal stability, increasing ACSL4 protein abundance and enhancing ACSL4-dependent ferroptosis. [1]
ACSL4 knockdown reversed the ferroptosis and senescent phenotypes caused by USP8 dysregulation, but the abstract says in vivo validation is still needed. [1]
The source at a glance
- Study type / format
- Abstract of a laboratory cell study
- Population / context
- Chicken ovarian follicular granulosa cells
- Summary based on
- Study abstract
- Original publication
- October 5, 2026
USP8 and ferroptosis in chicken granulosa cells
The abstract describes ferroptosis as an iron-dependent cell death triggered by lipid peroxidation and notes that its role in avian reproduction is largely unclear. The authors tested the deubiquitinating enzyme USP8 in chicken follicular granulosa cells using loss- and gain-of-function assays. They report that USP8 positively modulates ferroptosis, shown by altered cell viability, glutathione depletion, higher malondialdehyde and reactive oxygen species levels, and different expression of FSP1, SLC7A11 and NCOA4.
Supporting source [1]
ACSL4 stability and senescence-like markers
Mechanistically, the abstract states that USP8 regulates ACSL4 ubiquitination and proteasomal stability, increasing ACSL4 protein abundance and thereby enhancing ACSL4-dependent ferroptosis. Functional analyses further report that USP8-promoted ferroptosis is associated with a senescence-like phenotype, marked by upregulation of P16, P21 and P53 and prominent G1-phase cell cycle arrest. Notably, ACSL4 knockdown effectively reversed the ferroptosis and senescent phenotypes caused by USP8 dysregulation.
Supporting source [1]
Proposed USP8-ACSL4 axis and open in vivo questions
The authors summarize their work as identifying a USP8-ACSL4-ferroptosis-senescence axis that may control granulosa cell fate and follicular atresia in chickens. They suggest USP8 and ACSL4 could be explored as potential targets for preserving granulosa cell function. The abstract itself states this remains to be validated in vivo, so the findings are from cell experiments and do not establish effects on whole birds or on lifespan.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. Findings come from cell experiments in chickens, and the authors state that in vivo validation remains to be done.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Zhu Y, Han S, Zhang H, Wu K, Ren P, Zhang A. · europepmc.org · October 5, 2026