Table 1. Muscular dystrophies and myostatin inhibition.
Disease | Mode of inheritance | Gene locus | Gene products | Myostatin blockage | Ref [Method of myostatin inhibition] |
Duchenne | XR | Xp21 | Dystrophin | Effective in mdx mouse | Bogdanovich et al., (8) [1] Wagner et al., (21) [2] Bogdanovich et al., (9) [3] Nakatani et al., (17) [4] |
LGMD1C (CAV3) | AD | 3p25 | Caveolin-3 | Effective in model mouse | Ohsawa et al., (10) [5] |
LGMD2A (CAPN3) | AR | 15q15 | Calpain-3 | Gene therapy is effective | Bartoli et al., (11) [6] |
LGMD2D (SGCA) | AR | 17q12-21 | α-sarcoglycan | Gene therapy is not effective | Bartoli et al., (11) [6] |
LGMD2F (SGCD) | AR | 5q33-34 | δ-sarcoglycan | Early therapy is effectiveTreat early | Parsons et al., (22) [1, 2] |
MDC1A(LAMA2) | AR | 6q22 | Lamininα-2 | Not effective in dy mouse Severe fat loss | Li et al., (12) [2] |
The effects of myostatin blockade on various types of muscular dystrophy are summarized. Myostatin inhibition is applicable as a therapy for multiple types of muscular dystrophy. Transgenic approaches, systemic injection and gene therapy have been tried. Myostatin blockade by myostatin antibodies, modified myostatin propeptide or follistatin-derived peptides is effective for ameliorating the pathophysiology in mdx mice. Myostatin inhibition is also effective for ameliorating several types of limb-girdle-type muscular dystrophy caused by mutations of caveolin-3 or calpain-3. Effective therapy would be possible by early treatment. It is noteworthy that elimination of myostatin does not improve the phenotypes of laminin-α2-deficient model mice. Method of myostatin inhibition is shown as brackets.
myostatin antibody treatment;
crossing with myostatin K/O mice;
myostatin propeptide treatment;
crossing with mutated follistatin Tg mice;
crossing with myostatin propeptide Tg mice;
AAV-mediated mutated myostatin propeptide expression. References are shown with parentheses.