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2015 ; 5
(ä): 34
Nephropedia Template TP
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English Wikipedia
Myostatin blockade with a fully human monoclonal antibody induces muscle
hypertrophy and reverses muscle atrophy in young and aged mice
#MMPMID26457176
Latres E
; Pangilinan J
; Miloscio L
; Bauerlein R
; Na E
; Potocky TB
; Huang Y
; Eckersdorff M
; Rafique A
; Mastaitis J
; Lin C
; Murphy AJ
; Yancopoulos GD
; Gromada J
; Stitt T
Skelet Muscle
2015[]; 5
(ä): 34
PMID26457176
show ga
BACKGROUND: Loss of skeletal muscle mass and function in humans is associated
with significant morbidity and mortality. The role of myostatin as a key negative
regulator of skeletal muscle mass and function has supported the concept that
inactivation of myostatin could be a useful approach for treating muscle wasting
diseases. METHODS: We generated a myostatin monoclonal blocking antibody
(REGN1033) and characterized its effects in vitro using surface plasmon resonance
biacore and cell-based Smad2/3 signaling assays. REGN1033 was tested in mice for
the ability to induce skeletal muscle hypertrophy and prevent atrophy induced by
immobilization, hindlimb suspension, or dexamethasone. The effect of REGN1033 on
exercise training was tested in aged mice. Messenger RNA sequencing,
immunohistochemistry, and ex vivo force measurements were performed on skeletal
muscle samples from REGN1033-treated mice. RESULTS: The human monoclonal antibody
REGN1033 is a specific and potent myostatin antagonist. Chronic treatment of mice
with REGN1033 increased muscle fiber size, muscle mass, and force production.
REGN1033 prevented the loss of muscle mass induced by immobilization,
glucocorticoid treatment, or hindlimb unweighting and increased the gain of
muscle mass during recovery from pre-existing atrophy. In aged mice, REGN1033
increased muscle mass and strength and improved physical performance during
treadmill exercise. CONCLUSIONS: We show that specific myostatin antagonism with
the human antibody REGN1033 enhanced muscle mass and function in young and aged
mice and had beneficial effects in models of skeletal muscle atrophy.