Autosomal recessive osteopetrosis: mechanisms and treatments

Autosomal recessive osteopetrosis (ARO) is a severe inherited bone disease characterized by defective osteoclast resorption or differentiation. Clinical manifestations include dense and brittle bones, anemia and progressive nerve compression, which hamper the quality of patients' lives and caus...

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Main Authors: Sara Penna, Anna Villa, Valentina Capo
Format: Article
Language:English
Published: The Company of Biologists 2021-05-01
Series:Disease Models & Mechanisms
Subjects:
Online Access:http://dmm.biologists.org/content/14/5/dmm048940
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author Sara Penna
Anna Villa
Valentina Capo
author_facet Sara Penna
Anna Villa
Valentina Capo
author_sort Sara Penna
collection DOAJ
description Autosomal recessive osteopetrosis (ARO) is a severe inherited bone disease characterized by defective osteoclast resorption or differentiation. Clinical manifestations include dense and brittle bones, anemia and progressive nerve compression, which hamper the quality of patients' lives and cause death in the first 10 years of age. This Review describes the pathogenesis of ARO and highlights the strengths and weaknesses of the current standard of care, namely hematopoietic stem cell transplantation (HSCT). Despite an improvement in the overall survival and outcomes of HSCT, transplant-related morbidity and the pre-existence of neurological symptoms significantly limit the success of HSCT, while the availability of human leukocyte antigen (HLA)-matched donors still remains an open issue. Novel therapeutic approaches are needed for ARO patients, especially for those that cannot benefit from HSCT. Here, we review preclinical and proof-of-concept studies, such as gene therapy, systematic administration of deficient protein, in utero HSCT and gene editing.
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spelling doaj.art-ce42f204027e4fc98e9fae213af25f862022-12-21T18:57:55ZengThe Company of BiologistsDisease Models & Mechanisms1754-84031754-84112021-05-0114510.1242/dmm.048940048940Autosomal recessive osteopetrosis: mechanisms and treatmentsSara Penna0Anna Villa1Valentina Capo2 San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, Milan 20132, Italy San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, Milan 20132, Italy San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), IRCCS San Raffaele Scientific Institute, Milan 20132, Italy Autosomal recessive osteopetrosis (ARO) is a severe inherited bone disease characterized by defective osteoclast resorption or differentiation. Clinical manifestations include dense and brittle bones, anemia and progressive nerve compression, which hamper the quality of patients' lives and cause death in the first 10 years of age. This Review describes the pathogenesis of ARO and highlights the strengths and weaknesses of the current standard of care, namely hematopoietic stem cell transplantation (HSCT). Despite an improvement in the overall survival and outcomes of HSCT, transplant-related morbidity and the pre-existence of neurological symptoms significantly limit the success of HSCT, while the availability of human leukocyte antigen (HLA)-matched donors still remains an open issue. Novel therapeutic approaches are needed for ARO patients, especially for those that cannot benefit from HSCT. Here, we review preclinical and proof-of-concept studies, such as gene therapy, systematic administration of deficient protein, in utero HSCT and gene editing.http://dmm.biologists.org/content/14/5/dmm048940osteopetrosisbone diseaseosteoclasthematopoietic stem cell transplantationgene therapy
spellingShingle Sara Penna
Anna Villa
Valentina Capo
Autosomal recessive osteopetrosis: mechanisms and treatments
Disease Models & Mechanisms
osteopetrosis
bone disease
osteoclast
hematopoietic stem cell transplantation
gene therapy
title Autosomal recessive osteopetrosis: mechanisms and treatments
title_full Autosomal recessive osteopetrosis: mechanisms and treatments
title_fullStr Autosomal recessive osteopetrosis: mechanisms and treatments
title_full_unstemmed Autosomal recessive osteopetrosis: mechanisms and treatments
title_short Autosomal recessive osteopetrosis: mechanisms and treatments
title_sort autosomal recessive osteopetrosis mechanisms and treatments
topic osteopetrosis
bone disease
osteoclast
hematopoietic stem cell transplantation
gene therapy
url http://dmm.biologists.org/content/14/5/dmm048940
work_keys_str_mv AT sarapenna autosomalrecessiveosteopetrosismechanismsandtreatments
AT annavilla autosomalrecessiveosteopetrosismechanismsandtreatments
AT valentinacapo autosomalrecessiveosteopetrosismechanismsandtreatments