YTHDF2-mediated regulations bifurcate BHPF-induced programmed cell deaths.

YTHDF2-mediated regulations bifurcate BHPF-induced programmed cell deaths.
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DOI:
10.1093/nsr/nwad227
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发表时间:
2023-12
影响因子:
20.6
通讯作者:
--
中科院分区:
综合性期刊1区
文献类型:
--
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N6-甲基腺苷 (m6A) 是 RNA 命运的关键调节因子,但 m6A 是否以及如何在不同组织中执行其功能仍然很不清楚。在这里,我们报告了关键的 m6A 阅读器 YTHDF2 的下调,导致暴露于芴 9-双酚 (BHPF) 后的组织特异性程序性细胞死亡 (PCD)。目前,双酚A(BPA)替代品广泛用于塑料制造。通过研究八种常见的 BPA 替代品,我们在怀孕参与者 14% 的血清样本中检测到了 BHPF。在斑马鱼模型中,BHPF 引起组织特异性 PCD,从而引发心脏和血管缺陷。从机制上讲,BHPF 介导的 YTHDF2 下调可减少 YTHDF2 促进的 m6A-gch1 翻译(导致心肌细胞铁死亡),并减少 YTHDF2 介导的 m6A-sting1 衰变(导致尾静脉丛(CVP)细胞凋亡)。两种不同的 YTHDF2 介导的 m6A 调节以及 gch1/ythdf2 和 tnfrsf1a/ythdf2 的上下文依赖性共表达模式促成了 YTHDF2 介导的组织特异性 PCD,揭示了 PCD 调节的新层面。由于在哺乳动物中也观察到 BHPF/YTHDF2 介导的 PCD 缺陷,因此 BHPF 暴露代表了潜在的健康威胁。
N6-methyladenosine (m6A) is a critical regulator in the fate of RNA, but whether and how m6A executes its functions in different tissues remains largely obscure. Here we report downregulation of a crucial m6A reader, YTHDF2, leading to tissue-specific programmed cell deaths (PCDs) upon fluorene-9-bisphenol (BHPF) exposure. Currently, Bisphenol A (BPA) substitutes are widely used in plastic manufacturing. Interrogating eight common BPA substitutes, we detected BHPF in 14% serum samples of pregnant participants. In a zebrafish model, BHPF caused tissue-specific PCDs triggering cardiac and vascular defects. Mechanistically, BHPF-mediated downregulation of YTHDF2 reduced YTHDF2-facilitated translation of m6A-gch1 for cardiomyocyte ferroptosis, and decreased YTHDF2-mediated m6A-sting1 decay for caudal vein plexus (CVP) apoptosis. The two distinct YTHDF2-mediated m6A regulations and context-dependent co-expression patterns of gch1/ythdf2 and tnfrsf1a/ythdf2 contributed to YTHDF2-mediated tissue-specific PCDs, uncovering a new layer of PCD regulation. Since BHPF/YTHDF2-medaited PCD defects were also observed in mammals, BHPF exposure represents a potential health threat.
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