Maturation of phagosomes containing different erythrophagocytic particles in primary macrophages

Erythrophagocytosis is a physiological process that aims to remove damaged red blood cells from the circulation in order to avoid hemolysis and uncontrolled liberation of iron. Many efforts have been made to understand heme trafficking inside macrophages, but little is known about the maturation of...

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Main Authors: Inês B. Santarino, Otília V. Vieira
Format: Article
Language:English
Published: Wiley 2017-09-01
Series:FEBS Open Bio
Subjects:
Online Access:https://doi.org/10.1002/2211-5463.12262
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author Inês B. Santarino
Otília V. Vieira
author_facet Inês B. Santarino
Otília V. Vieira
author_sort Inês B. Santarino
collection DOAJ
description Erythrophagocytosis is a physiological process that aims to remove damaged red blood cells from the circulation in order to avoid hemolysis and uncontrolled liberation of iron. Many efforts have been made to understand heme trafficking inside macrophages, but little is known about the maturation of phagosomes containing different types of erythrophagocytic particles with different signals at their surfaces. Therefore, we performed a comparative study on the maturation of phagosomes containing three different models of red blood cells (RBC): aged/senescent, complement‐opsonized, and IgG‐opsonized. We also used two types of professional phagocytes: bone marrow‐derived and peritoneal macrophages. By comparing markers from different stages of phagosomal maturation, we found that phagosomes carrying aged RBC reach lysosomes with a delay compared to those containing IgG‐ or complement‐opsonized RBC, in both types of macrophages. These findings contribute to understanding the importance of the different signals at the RBC surface in phagolysosome biogenesis, as well as in the dynamics of RBC removal.
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spelling doaj.art-5bd60f99f0814e8c88b719a8b5963fac2022-12-22T04:35:14ZengWileyFEBS Open Bio2211-54632017-09-01791281129010.1002/2211-5463.12262Maturation of phagosomes containing different erythrophagocytic particles in primary macrophagesInês B. Santarino0Otília V. Vieira1CEDOC NOVA Medical School, Faculdade de Ciências Médicas Universidade NOVA de Lisboa PortugalCEDOC NOVA Medical School, Faculdade de Ciências Médicas Universidade NOVA de Lisboa PortugalErythrophagocytosis is a physiological process that aims to remove damaged red blood cells from the circulation in order to avoid hemolysis and uncontrolled liberation of iron. Many efforts have been made to understand heme trafficking inside macrophages, but little is known about the maturation of phagosomes containing different types of erythrophagocytic particles with different signals at their surfaces. Therefore, we performed a comparative study on the maturation of phagosomes containing three different models of red blood cells (RBC): aged/senescent, complement‐opsonized, and IgG‐opsonized. We also used two types of professional phagocytes: bone marrow‐derived and peritoneal macrophages. By comparing markers from different stages of phagosomal maturation, we found that phagosomes carrying aged RBC reach lysosomes with a delay compared to those containing IgG‐ or complement‐opsonized RBC, in both types of macrophages. These findings contribute to understanding the importance of the different signals at the RBC surface in phagolysosome biogenesis, as well as in the dynamics of RBC removal.https://doi.org/10.1002/2211-5463.12262complement‐opsonized red blood cells, aged red blood cellserythrophagocytosisIgG‐opsonized Red Blood Cellsphagosomal maturation
spellingShingle Inês B. Santarino
Otília V. Vieira
Maturation of phagosomes containing different erythrophagocytic particles in primary macrophages
FEBS Open Bio
complement‐opsonized red blood cells, aged red blood cells
erythrophagocytosis
IgG‐opsonized Red Blood Cells
phagosomal maturation
title Maturation of phagosomes containing different erythrophagocytic particles in primary macrophages
title_full Maturation of phagosomes containing different erythrophagocytic particles in primary macrophages
title_fullStr Maturation of phagosomes containing different erythrophagocytic particles in primary macrophages
title_full_unstemmed Maturation of phagosomes containing different erythrophagocytic particles in primary macrophages
title_short Maturation of phagosomes containing different erythrophagocytic particles in primary macrophages
title_sort maturation of phagosomes containing different erythrophagocytic particles in primary macrophages
topic complement‐opsonized red blood cells, aged red blood cells
erythrophagocytosis
IgG‐opsonized Red Blood Cells
phagosomal maturation
url https://doi.org/10.1002/2211-5463.12262
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