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Desformylflustrabromine
Desformylflustrabromine (dFBr) is a tryptamine derivative which was first isolated as an active metabolite of the marine bryozoan ''Flustra foliacea''.
== Bioactivity ==
dFBr has been identified as a novel positive allosteric modulator of neuronal nicotinic acetylcholine receptor with sub-type specificity for heteromeric receptor with no effect on homomeric sub-type. A recent study has been published which describes the synthesis of water-soluble salts of dFBr and its action has been confirmed as selective potentiator of α4β2 nicotinic acetylcholine receptor responses by using two-electrode voltage clamp whole cell recordings. In the year 2002 it was reported that dFBr was cytotoxic on human colon cancer cell line HCT-116.
Desformylflustrabromine has also been found to be a positive allosteric modulator for the α2β2 subtype of neuronal nicotinic acetylcholine receptor. Additionally it relieves the inhibition of both α2β2 and α4β2 Nicotinic Acetylcholine Receptors by β-Amyloid (1–42) Peptide. Thus Desformylflustrabromine can potentially be used in the treatment of Alzheimer's disease. Many of the deconstructed analogs of dFBr are reported to have a potentiating effect on the α4β2 receptors.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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