Antisense Oligonucleotide Therapy for Calmodulinopathy.
Circulation
; 150(15): 1199-1210, 2024 Oct 08.
Article
in En
| MEDLINE
| ID: mdl-39155863
ABSTRACT
BACKGROUND:
Calmodulinopathies are rare inherited arrhythmia syndromes caused by dominant heterozygous variants in CALM1, CALM2, or CALM3, which each encode the identical CaM (calmodulin) protein. We hypothesized that antisense oligonucleotide (ASO)-mediated depletion of an affected calmodulin gene would ameliorate disease manifestations, whereas the other 2 calmodulin genes would preserve CaM level and function.METHODS:
We tested this hypothesis using human induced pluripotent stem cell-derived cardiomyocyte and mouse models of CALM1 pathogenic variants.RESULTS:
Human CALM1F142L/+ induced pluripotent stem cell-derived cardiomyocytes exhibited prolonged action potentials, modeling congenital long QT syndrome. CALM1 knockout or CALM1-depleting ASOs did not alter CaM protein level and normalized repolarization duration of CALM1F142L/+ induced pluripotent stem cell-derived cardiomyocytes. Similarly, an ASO targeting murine Calm1 depleted Calm1 transcript without affecting CaM protein level. This ASO alleviated drug-induced bidirectional ventricular tachycardia in Calm1N98S/+ mice without a deleterious effect on cardiac electrical or contractile function.CONCLUSIONS:
These results provide proof of concept that ASOs targeting individual calmodulin genes are potentially effective and safe therapies for calmodulinopathies.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Calmodulin
/
Oligonucleotides, Antisense
/
Myocytes, Cardiac
Limits:
Animals
/
Humans
Language:
En
Journal:
Circulation
Year:
2024
Document type:
Article
Country of publication: