Regulation of myeloid derived phagocytes by phosphatidylserine-containing liposomes: Possible involvement of prostaglandin E2 and the potential therapeutic application

Zhou Wu, Hiroshi Nakanishi

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

Phosphatidylserine (PS), which is normally located on the inner leaflet of the plasma membrane, translocates to the outer leaflet during early stages of apoptosis,. The externalization of PS provides a signal for phagocytes to initiate uptake of apoptotic cells. After the phagocytosis of apoptotic cells, phagocytes start to secrete anti-inflammatory mediators including prostaglandin E2 (PGE2), which act an autocrine manner to control their functions. PS-containing liposomes (PS liposomes) can mimic the effects of apoptotic cells on phagocytes to induce the secretion of PGE2. PS liposomes induced PGE2 secretion from microglia without induction of either cyclooxygenase (COX)-2 or microsomal prostaglandin E synthase (mPGES)-1. PS liposomes were found to utilize the COX-1/mPGES-2 system to produce PGE2 secretion and then shift microglia and macrophages from a pro- to anti-inflammatory phenotype by the autocrine action of PGE2. Moreover, PS liposomes inhibit the maturation of dendritic cells and osteoclast precursors. Therefore, PS liposomes may be potentially useful as one type of pharmacological intervention for inflammatory and immune diseases through a feedback mechanism involving PGE2.

Original languageEnglish
Title of host publicationProstaglandins
Subtitle of host publicationBiochemistry, Functions, Types and Roles
PublisherNova Science Publishers, Inc.
Pages81-92
Number of pages12
ISBN (Print)9781616682729
Publication statusPublished - Jan 1 2011

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)

Fingerprint

Dive into the research topics of 'Regulation of myeloid derived phagocytes by phosphatidylserine-containing liposomes: Possible involvement of prostaglandin E<sub>2</sub> and the potential therapeutic application'. Together they form a unique fingerprint.

Cite this