Literature DB >> 10838073

A novel fluorescent probe diphenyl-1-pyrenylphosphine to follow lipid peroxidation in cell membranes.

Y Okimotoa1, A Watanabea, E Nikia, T Yamashitab, N Noguchia.   

Abstract

Diphenyl-1-pyrenylphosphine (DPPP) was tested whether it could be used as a fluorescent probe to monitor lipid peroxidation in cell membranes. DPPP reacted with organic hydroperoxides and hydrogen peroxide stoichiometrically to give DPPP oxide (DPPP = O). DPPP incorporated into phosphatidylcholine liposomal membranes and polymorphonuclear leukocytes (PMNs) reacted with methyl linoleate hydroperoxide rapidly but not with hydrogen peroxide nor with tert-butyl hydroperoxide. This novel method revealed that lipid peroxidation proceeded within membranes of PMNs stimulated with phorbol 12-myristate 13-acetate, which is known to produce several kinds of free radicals. It was found that DPPP is a suitable fluorescent probe to monitor lipid peroxidation within cell membranes specifically.

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Year:  2000        PMID： 10838073     DOI： 10.1016/s0014-5793(00)01587-8

Source DB:  PubMed          Journal:  FEBS Lett        ISSN： 0014-5793            Impact factor:   4.124


  42 in total

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