Capsaicin binds to prohibitin 2 and displaces it from the mitochondria to the nucleus.

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Kuramori C, Azuma M, Kume K, Kaneko Y, Inoue A, Yamaguchi Y, Kabe Y, Hosoya T, Kizaki M, Suematsu M, Handa H

Capsaicin binds to prohibitin 2 and displaces it from the mitochondria to the nucleus.

Biochem Biophys Res Commun. 2009 Feb 6;379(2):519-25. doi: 10.1016/j.bbrc.2008.12.103. Epub 2008 Dec 29.

PubMed ID

19116139 [ View in PubMed

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Abstract

Capsaicin is widely used as a food additive and as an analgesic agent. Besides its well-known role in nociception, which is mediated by vanilloid receptor 1 specifically expressed in dorsal root ganglion neurons, capsaicin has also been considered as a potential anticancer agent, as it inhibits cell proliferation and induces apoptosis in various types of cancer cells. Here we identified a new molecular target of capsaicin from human myeloid leukemia cells. We show that capsaicin binds to prohibitin (PHB) 2, which is normally localized to the inner mitochondrial membrane, and induces its translocation to the nucleus. PHB2 is implicated in the maintenance of mitochondrial morphology and the control of apoptosis. We also provide evidence suggesting that capsaicin causes apoptosis directly through the mitochondria and that PHB2 contributes to capsaicin-induced apoptosis at multiple levels. This work will serve as an important foundation for further understanding of anticancer activity of capsaicin.

DrugBank Data that Cites this Article

Drug Targets

Drug	Target	Kind	Organism	Pharmacological Action	Actions
Capsaicin	Prohibitin-2	Protein	Humans	Unknown	Not Available	Details