Maternal PAN2 selectively maintains mRNA Poly(A) tail homeostasis to regulate RNA degradation during oocyte-to-early embryo transition in mice.
This study establishes maternal PAN2 as a critical regulator of poly(A) tail homeostasis, ensuring timely maternal mRNA clearance and proper ZGA, highlighting the stage-specific and tail-composition-dependent functions of the deadenylase cascade during the maternal-to-zygotic transition.