Immune Escape after Hematopoietic Stem Cell Transplantation (HSCT): From Mechanisms to Novel Therapies

Acute myeloid leukemia (AML) is the most common type of acute leukemia in adults. Recent advances in understanding its molecular basis have opened the way to new therapeutic strategies, including targeted therapies. However, despite an improvement in prognosis it has been documented in recent years...

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Main Authors: Paolo Bernasconi, Oscar Borsani
Format: Article
Language:English
Published: MDPI AG 2019-12-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/12/1/69
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author Paolo Bernasconi
Oscar Borsani
author_facet Paolo Bernasconi
Oscar Borsani
author_sort Paolo Bernasconi
collection DOAJ
description Acute myeloid leukemia (AML) is the most common type of acute leukemia in adults. Recent advances in understanding its molecular basis have opened the way to new therapeutic strategies, including targeted therapies. However, despite an improvement in prognosis it has been documented in recent years (especially in younger patients) that allogenic hematopoietic stem cell transplantation (allo-HSCT) remains the only curative treatment in AML and the first therapeutic option for high-risk patients. After allo-HSCT, relapse is still a major complication, and is observed in about 50% of patients. Current evidence suggests that relapse is not due to clonal evolution, but instead to the ability of the AML cell population to escape immune control by a variety of mechanisms including the altered expression of HLA-molecules, production of anti-inflammatory cytokines, relevant metabolic changes and expression of immune checkpoint (ICP) inhibitors capable of “switching-off” the immune response against leukemic cells. Here, we review the main mechanisms of immune escape and identify potential strategies to overcome these mechanisms.
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spelling doaj.art-e21b4f6372694ea08ac1a6b6a1e388802023-08-02T05:13:43ZengMDPI AGCancers2072-66942019-12-011216910.3390/cancers12010069cancers12010069Immune Escape after Hematopoietic Stem Cell Transplantation (HSCT): From Mechanisms to Novel TherapiesPaolo Bernasconi0Oscar Borsani1Department of Molecular Medicine, University of Pavia, 27100 Pavia, ItalyDepartment of Molecular Medicine, University of Pavia, 27100 Pavia, ItalyAcute myeloid leukemia (AML) is the most common type of acute leukemia in adults. Recent advances in understanding its molecular basis have opened the way to new therapeutic strategies, including targeted therapies. However, despite an improvement in prognosis it has been documented in recent years (especially in younger patients) that allogenic hematopoietic stem cell transplantation (allo-HSCT) remains the only curative treatment in AML and the first therapeutic option for high-risk patients. After allo-HSCT, relapse is still a major complication, and is observed in about 50% of patients. Current evidence suggests that relapse is not due to clonal evolution, but instead to the ability of the AML cell population to escape immune control by a variety of mechanisms including the altered expression of HLA-molecules, production of anti-inflammatory cytokines, relevant metabolic changes and expression of immune checkpoint (ICP) inhibitors capable of “switching-off” the immune response against leukemic cells. Here, we review the main mechanisms of immune escape and identify potential strategies to overcome these mechanisms.https://www.mdpi.com/2072-6694/12/1/69acute myeloid leukemiahematopoietic stem cell transplantationrelapsedonor lymphocyte infusionhypomethylating agentsmechanisms of immune escape
spellingShingle Paolo Bernasconi
Oscar Borsani
Immune Escape after Hematopoietic Stem Cell Transplantation (HSCT): From Mechanisms to Novel Therapies
Cancers
acute myeloid leukemia
hematopoietic stem cell transplantation
relapse
donor lymphocyte infusion
hypomethylating agents
mechanisms of immune escape
title Immune Escape after Hematopoietic Stem Cell Transplantation (HSCT): From Mechanisms to Novel Therapies
title_full Immune Escape after Hematopoietic Stem Cell Transplantation (HSCT): From Mechanisms to Novel Therapies
title_fullStr Immune Escape after Hematopoietic Stem Cell Transplantation (HSCT): From Mechanisms to Novel Therapies
title_full_unstemmed Immune Escape after Hematopoietic Stem Cell Transplantation (HSCT): From Mechanisms to Novel Therapies
title_short Immune Escape after Hematopoietic Stem Cell Transplantation (HSCT): From Mechanisms to Novel Therapies
title_sort immune escape after hematopoietic stem cell transplantation hsct from mechanisms to novel therapies
topic acute myeloid leukemia
hematopoietic stem cell transplantation
relapse
donor lymphocyte infusion
hypomethylating agents
mechanisms of immune escape
url https://www.mdpi.com/2072-6694/12/1/69
work_keys_str_mv AT paolobernasconi immuneescapeafterhematopoieticstemcelltransplantationhsctfrommechanismstonoveltherapies
AT oscarborsani immuneescapeafterhematopoieticstemcelltransplantationhsctfrommechanismstonoveltherapies