Article (Scientific journals)
Myostatin: a Circulating Biomarker Correlating with Disease in Myotubular Myopathy Mice and Patients.
Koch, Catherine; Buono, Suzie; Menuet, Alexia et al.
2020In Molecular Therapy: Methods and Clinical Development, 17, p. 1178-1189
 

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Keywords :
GDF8; MSTN; antisense oligonucleotides; biomarker; centronuclear myopathies; dynamin; myotubular myopathy; therapy
Abstract :
[en] Myotubular myopathy, also called X-linked centronuclear myopathy (XL-CNM), is a severe congenital disease targeted for therapeutic trials. To date, biomarkers to monitor disease progression and therapy efficacy are lacking. The Mtm1 (-/y) mouse is a faithful model for XL-CNM, due to myotubularin 1 (MTM1) loss-of-function mutations. Using both an unbiased approach (RNA sequencing [RNA-seq]) and a directed approach (qRT-PCR and protein level), we identified decreased Mstn levels in Mtm1 (-/y) muscle, leading to low levels of myostatin in muscle and plasma. Myostatin (Mstn or growth differentiation factor 8 [Gdf8]) is a protein released by myocytes and inhibiting muscle growth and differentiation. Decreasing Dnm2 by genetic cross with Dnm2 (+/-) mice or by antisense oligonucleotides blocked or postponed disease progression and resulted in an increase in circulating myostatin. In addition, plasma myostatin levels inversely correlated with disease severity and with Dnm2 mRNA levels in muscles. Altered Mstn levels were associated with a generalized disruption of the myostatin pathway. Importantly, in two different forms of CNMs we identified reduced circulating myostatin levels in plasma from patients. This provides evidence of a blood-based biomarker that may be used to monitor disease state in XL-CNM mice and patients and supports monitoring circulating myostatin during clinical trials for myotubular myopathy.
Disciplines :
Neurology
Pediatrics
Author, co-author :
Koch, Catherine
Buono, Suzie
Menuet, Alexia
Robé, Anne
Djeddi, Sarah
Kretz, Christine
Gomez-Oca, Raquel
Depla, Marion
Monseur, Arnaud
Thielemans, Leen
Servais, Laurent ;  Université de Liège - ULiège > Département des sciences cliniques > Département des sciences cliniques
Laporte, Jocelyn
Cowling, Belinda S.
More authors (3 more) Less
Language :
English
Title :
Myostatin: a Circulating Biomarker Correlating with Disease in Myotubular Myopathy Mice and Patients.
Publication date :
04 May 2020
Journal title :
Molecular Therapy: Methods and Clinical Development
eISSN :
2329-0501
Publisher :
Elsevier, United States
Volume :
17
Pages :
1178-1189
Commentary :
© 2020 The Authors. doi: 10.1016/j.omtm.2020.04.022. eCollection 2020 Jun 12
Available on ORBi :
since 01 February 2021

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