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Myostatin Increases Trophoblast Cell Invasion Through Regulating Epithelial Mesenchymal Transition Genes

ABSTRACT: Myostatin (MSTN) is a TGF-β superfamily member and was recently shown to be secreted and functioning in the placenta. In this study, we perfomed mRNA sequencing on control and MSTN-treated primary trophoblast cells to decipher the underlying molecular mechanisms involved in MSTN-induced human trophoblast cell invasion.

ORGANISM(S): Homo sapiens

PROVIDER: GSE225378 | GEO | 2023/02/18

REPOSITORIES: GEO

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The Possible Role of Complete Loss of Myostatin in Limiting Excessive Proliferation of Muscle Cells (C2C12) via Activation of MicroRNAs (mRNA-seq)

Project description:Myostatin (MSTN) is a member of the TGF-β superfamily that negatively regulates skeletal muscle growth and differentiation. However, the mechanism by which complete MSTN deletion limits excessive proliferation of muscle cells remains unclear. In this study, we knocked out MSTN in mouse myoblast lines using a Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR/Cas9) system and sequenced the mRNA and miRNA transcriptomes. Our study suggests that complete loss of MSTN may limit excessive cell proliferation via activation of miRNAs.

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Gene co-expression network analysis of myostatin regulation at three different mouse developmental timepoints

Project description:Myostatin (Mstn) knockout mice exhibit large increases in skeletal muscle mass. However, relatively few of the genes that mediate or modify MSTN effects are known. In this study, we performed co-expression network analysis using whole transcriptome microarray data from Mstn-null and wild-type mice to identify genes involved in important biological processes and pathways related to skeletal muscle and adipose development.Genes differentially expressed between wild-type and Mstn-null mice were identified at 13.5 d.p.c. and 35 days after birth (d35) and further analyzed for shared DNA motifs using DREME. Known and novel transcription factor binding sites involved in MSTN signal transduction were enriched in differentially expressed genes. The use of regulatory impact factor (RIF), phenotypic impact factor (PIF), and differential hubbing analyses with the partical correlation and information theory (PCIT) co-expression analysis methods identified both known and potentially novel regulators of muscle development. These results provide new details of how MSTN may mediate transcriptional regulation as well as insight into novel regulators of MSTN signal transduction that merit further study regarding their physiological roles in muscle and adipose development.

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