Non-identical twins

Different faces of CR3 and CR4 in myeloid and lymphoid cells of mice and men

A. Erdei, Szilvia Lukácsi, Bernadett Mácsik-Valent, Zsuzsa Nagy-Baló, István Kurucz, Z. Bajtay

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Integrins are cell membrane receptors that are involved in essential physiological and serious pathological processes. Their main role is to ensure a closely regulated link between the extracellular matrix and the intracellular cytoskeletal network enabling cells to react to environmental stimuli. Complement receptor type 3 (CR3, αMβ2, CD11b/CD18) and type 4 (CR4, αXβ2, CD11c/CD18) are members of the β2-integrin family expressed on most white blood cells. Both receptors bind multiple ligands like iC3b, ICAM, fibrinogen or LPS. β2-integrins are accepted to play important roles in cellular adhesion, migration, phagocytosis, ECM rearrangement and inflammation. Several pathological conditions are linked to the impaired functions of these receptors.CR3 and CR4 are generally thought to mediate overlapping functions in monocytes, macrophages and dendritic cells, therefore the potential distinctive role of these receptors has not been investigated so far in satisfactory details. Lately it has become clear that a functional segregation has evolved between the two receptors regarding phagocytosis, cellular adhesion and podosome formation. In addition to their tasks on myeloid cells, the expression and function of CR3 and CR4 on lymphocytes have also gained interest recently. The picture is further complicated by the fact that while these β2-integrins are expressed by immune cells both in mice and humans, there are significant differences in their expression level, functions and the pathological consequences of genetic defects. Here we aim to summarize our current knowledge on CR3 and CR4 and highlight the functional differences between these receptors, involving their expression in myeloid and lymphoid cells of both men and mice.

Original languageEnglish
JournalSeminars in Cell and Developmental Biology
DOIs
Publication statusAccepted/In press - Jan 1 2017

Fingerprint

Myeloid Cells
Integrins
Lymphocytes
Macrophage-1 Antigen
Complement C3b
Pathologic Processes
Phagocytosis
Dendritic Cells
Fibrinogen
Extracellular Matrix
Monocytes
Leukocytes
Macrophages
Cell Membrane
Ligands
Inflammation

Keywords

  • CR3
  • CR4
  • Human
  • Mouse
  • βintegrins

ASJC Scopus subject areas

  • Developmental Biology
  • Cell Biology

Cite this

Non-identical twins : Different faces of CR3 and CR4 in myeloid and lymphoid cells of mice and men. / Erdei, A.; Lukácsi, Szilvia; Mácsik-Valent, Bernadett; Nagy-Baló, Zsuzsa; Kurucz, István; Bajtay, Z.

In: Seminars in Cell and Developmental Biology, 01.01.2017.

Research output: Contribution to journalArticle

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