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12-HETE (12-hydroxyeicosatetraenoic acid; primarily 12(S)-HETE)
is an arachidonic-acid-derived eicosanoid produced predominantly through
ALOX12/12-lipoxygenase, with 12(S)-HpETE as an intermediate.
12-HETE functions as a bioactive lipid mediator and can signal through receptors
including GPR31. In cancer, increased ALOX12–12-HETE signalling
can promote tumour-cell migration, epithelial–mesenchymal transition, invasion,
angiogenesis and metastatic dissemination, including interactions between
platelets and circulating tumour cells. The typical cancer-associated direction
is therefore generally up, while the desired anticancer
modulation is generally down. 12-HETE also participates in
inflammatory and vascular signalling and has been reported as increased in some
Alzheimer-related lipidomic models, although its specific causal role in
Alzheimer’s disease remains less established.
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