Aug 2026· Journal of Cell Biology· Vol 225 8· 0 citations
Medicine
TL;DR
Findings link PARP1 activity to translational control and SG formation, which may protect against cell death following DNA damage, and provide insight into PARP1- and stress granule-associated diseases, including cancer and neurodegeneration.
It is demonstrated that oxidative stress temporarily halts RNAPII pause release and arrests the progression of elongation complexes within the gene body, and it is found that the restriction of initiation and early elongation complexes is regulated by PARylation, whereas recovery of RNAPII arrested within the gene body...
Q. Thomas, Liyang Wu, E. Lesage et al.· bioRxiv· 1 citation· ⚡1
Findings support a role for FMRP as a regulator of SG dynamics and identify the FMRP–G3BP1 axis as a candidate pathway for further investigation in aggressive and treatment-resistant cancers and in tumor adaptation to oxidative stress across distinct cellular contexts and survival programs.
Elena Santonico, Federica Ferrentino, C. Cirotti et al.· Cell Death & Disease· 0 citations
Together, the findings establish hY3 as a ribosome-bound regulator of translation and stress responses, positioning it as a determinant of cell fate under metabolic stress.
This work shows that RNAPII is degraded during many types of cellular stresses, and redistribution is vital for cell survival, as degradation blockage resulted in the loss of RNAPII from low GC promoters and compromised stress response from disrupted cell adhesion to increased apoptosis.
Hansong Qi, Kang-Hsin Chen, Ning Liu et al.· Science Advances· 0 citations
It is demonstrated that PARGi prolongs PARP1 residence at damaged chromatin in a manner mechanistically distinct from PARP-inhibitor-induced trapping, and dePARylation prevents the rapid nuclear extrusion of PARP1 upon S-phase entry.
An AKT-GSK3β-Plk1-ACLY signaling module that links the DDR to nuclear metabolism is defined, revealing a critical mechanism by which kinase signaling facilitates acetyl-CoA–dependent chromatin remodeling to preserve genome integrity.