Title:The Role of Angiotensin-Converting Enzyme in Immunity: Shedding
Light on Experimental Findings
Volume: 22
Issue: 1
Author(s): Ziba Aghsaeifard and Reza Alizadeh*
Affiliation:
- Department of Anesthesiology and Intensive Care, AJA University of Medical Sciences, Tehran, Iran
Keywords:
ACE, immunity, MHC, infection, malignancy, angiotensin.
Abstract: Abstract: Angiotensin-converting enzyme (ACE) is a zinc-dependent dicarboxypeptidase with
two catalytic components, which has an important role in regulating blood pressure by converting
angiotensin I to angiotensin II. ACE breaks down other peptides besides angiotensin I and has a variety
of physiological effects together with renal growth and reproduction in men. ACE also acts on
innate and acquired immune systems by affecting macrophage and neutrophil function, and these
outcomes are exacerbated due to the overexpression of ACE. Overexpression of ACE in
macrophages imposes antitumor and antimicrobial response, and it enhances the ability of neutrophils
to produced super peroxide that has a bactericidal effect. ACE is also known to contribute
to the expression of Major Histocompatibility Complex (MHC) class I and MHC class II peptides
through enzymatic alterations of these peptides. Apprehending the expression of ACE and its effects
on myeloid cell (myelogenous cells) activity can be promising in therapeutic interventions, including
treatment of infection and malignancy.