ArticleMarine biotechnology (New York, N.Y.)2020
PfSMAD1/5 Can Interact with PfSMAD4 to Inhibit PfMSX to Regulate Shell Biomineralization in Pinctada fucata martensii.
Article in Marine biotechnology (New York, N.Y.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed, 8 citations in OpenAlex.
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3 authors at 1 institution in 1 country.
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Abstract
The BMP2 signal transduced by SMAD1/5 plays an important role in osteoblast differentiation and bone formation. Shell formation of Pinctada fucata martensii is a typical biomineralization process that is similar to that of teeth/bone formation. However, whether the Pinctada fucata BMP2 (PfBMP2) signal transduced by PfSMAD1/5 occurs in P. f. martensii, how the PfBMP2 signal is transduced by PfSMAD1/5, and how PfSMAD1/5 regulates the biomineralization process in this species and other shellfish are poorly understood. Therefore, injection experiments of recombinant PfBMP2 and inhibitor dorsomorphin revealed that PfSMAD1/5 can transduce PfBMP2 signals. Subcellular localization and bimolecular fluorescence complementation assays indicated that PfSMAD1/5 phosphorylated by PfBMPR1b interacts with PfSMAD4 in the cytoplasm to form a complex, which translocates to the nucleus to transduce PfBMP2 signals. Co-immunoprecipitation and luciferase assays revealed that PfSMAD1/5 may interact with PfMSX to dislodge it from its binding element, resulting in initiation of mantle gene transcription. The in vivo functional assay showed that knockdown of PfMSAD1/5 decreased expression of shell matrix genes and disordered the nacreous layer, and the correlation assay of shell regeneration showed the concomitant expression pattern of PfSMAD1/5 and shell matrix genes. Together, these data showed that PfSMAD1/5 can transduce PfBMP2 signals to regulate shell biomineralization in P. f. martensii, which illustrated conservation of the BMP2-SMAD signal pathway among invertebrates. Particularly, the results suggest that there is only one PfMSX gene, which functions like the Hox gene in vertebrates, that interacts with PfSMAD1/5 in a protein-protein action form and plays the role of transcription repressor.
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