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Vasorin deficiency leads to cardiac hypertrophy by targeting MYL7 in young mice
Author(s) -
Sun Junming,
Guo Xiaoping,
Yu Ping,
Liang Jinning,
Mo Zhongxiang,
Zhang Mingyuan,
Yang Lichao,
Huang Xuejing,
Hu Bing,
Liu Jiajuan,
Ouyang Yiqiang,
He Min
Publication year - 2022
Publication title -
journal of cellular and molecular medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.44
H-Index - 130
eISSN - 1582-4934
pISSN - 1582-1838
DOI - 10.1111/jcmm.17034
Subject(s) - downregulation and upregulation , blot , muscle hypertrophy , biology , pathological , medicine , endocrinology , andrology , pathology , gene , genetics
Vasorin (VASN) is an important transmembrane protein associated with development and disease. However, it is not clear whether the death of mice with VASN deficiency ( VASN −/− ) is related to cardiac dysfunction. The aim of this research was to ascertain whether VASN induces pathological cardiac hypertrophy by targeting myosin light chain 7 (MYL7). VASN −/− mice were produced by CRISPR/Cas9 technology and inbreeding. PCR amplification, electrophoresis, real‐time PCR and Western blotting were used to confirm VASN deficiency. Cardiac hypertrophy was examined by blood tests, histological analysis and real‐time PCR, and key downstream factors were identified by RNA sequencing and real‐time PCR. Western blotting, immunohistochemistry and electron microscopy analysis were used to confirm the downregulation of MYL7 production and cardiac structural changes. Our results showed that sudden death of VASN −/− mice occurred 21–28 days after birth. The obvious increases in cardiovascular risk, heart weight and myocardial volume and the upregulation of hypertrophy marker gene expression indicated that cardiac hypertrophy may be the cause of death in young VASN −/− mice. Transcriptome analysis revealed that VASN deficiency led to MYL7 downregulation, which induced myocardial structure abnormalities and disorders. Our results revealed a pathological phenomenon in which VASN deficiency may lead to cardiac hypertrophy by downregulating MYL7 production. However, more research is necessary to elucidate the underlying mechanism.

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