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doi: 10.1080/08916930701619235 93

By managing the silence of transposable elements and regulating gene expression, piRNAs play a critical role in protecting the germline in mammalian oocytes and early embryonic stages, maintaining genomic integrity and guaranteeing appropriate developmental progression [551, 552]

Minich DM, Brown BI

Based on converging evolutionary and mechanistic evidenceencompassing mitochondrial centrality in hypoxic response, natural selection of the Tibetan-enriched mitochondrial DNA haplogroup M9a, and bidirectional ROS-HIF regulatory crosstalkwe propose a mechanistic hypothesis that mitochondrial retrograde signaling orchestrates nuclear genomic reprogramming through modulation of HIF-responsive elements to establish hypoxia-tolerant phenotypes