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Investigation of gene expression signature induced by Alk5TD (active type I TGF-beta receptor)

ABSTRACT: BT474 cells stably expressing Alk5TD or vector (BT474-Alk5TD and BT474-pBMN, respectively) were compared for gene expression. Genes that were differentially expressed between the two cell lines were collected as the signature induced by Alk5TD expression. Keywords: Comparison of two cell types (BT474-Alk5TD and BT474-pBMN). BT474-pBMN was used as the reference line.

ORGANISM(S): Homo sapiens

PROVIDER: GSE11293 | GEO | 2008/04/30

SECONDARY ACCESSION(S): PRJNA106711

REPOSITORIES: GEO

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Project description:BackgroundTransforming growth factor β (TGF-β) superfamily genes can regulate various processes, especially in embryogenesis, adult development, and homeostasis. To understand the evolution and divergence patterns of the TGF-β superfamily in scallops, genome-wide data from the Bay scallop (Argopecten irradians), the Zhikong scallop (Chlamys farreri) and the Yesso scallop (Mizuhopecten yessoensis) were systematically analysed using bioinformatics methods.ResultsTwelve members of the TGF-β superfamily were identified for each scallop. The phylogenetic tree showed that these genes were grouped into 11 clusters, including BMPs, ADMP, NODAL, GDF, activin/inhibin and AMH. The number of exons and the conserved motif showed some differences between different clusters, while genes in the same cluster exhibited high similarity. Selective pressure analysis revealed that the TGF-β superfamily in scallops was evolutionarily conserved. The spatiotemporal expression profiles suggested that different TGF-β members have distinct functions. Several BMP-like and NODAL-like genes were highly expressed in early developmental stages, patterning the embryonic body plan. GDF8/11-like genes showed high expression in striated muscle and smooth muscle, suggesting that these genes may play a critical role in regulating muscle growth. Further analysis revealed a possible duplication of AMH, which played a key role in gonadal growth/maturation in scallops. In addition, this study found that several genes were involved in heat and hypoxia stress in scallops, providing new insights into the function of the TGF-β superfamily.ConclusionCharacteristics of the TGF-β superfamily in scallops were identified, including sequence structure, phylogenetic relationships, and selection pressure. The expression profiles of these genes in different tissues, at different developmental stages and under different stresses were investigated. Generally, the current study lays a foundation for further study of their pleiotropic biological functions in scallops.

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Investigation of gene expression signature induced by Alk5TD (active type I TGF-beta receptor)

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