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miR-375 is a regulatory microRNA that generally functions as
a tumour suppressor in head-and-neck and HPV-associated squamous cell
carcinomas. It can suppress oncogenic transcripts involved in proliferation,
survival, invasion, and extracellular-matrix degradation, including
AEG-1/MTDH, IGF1R, JAK2, and YAP1. miR-375 may also directly or indirectly
reduce HPV16/18 E6 and E7 expression, thereby supporting p53 and RB tumour-
suppressor activity. miR-375 is frequently downregulated in these cancers;
therefore, restoration or increased expression is generally considered the
favourable direction in this context. Effects may differ by cancer type.
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