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- W2091700826 abstract "Uterine leiomyoma are common, benign tumors that are enriched in extracellular matrix. The tumors are characterized by a disoriented and loosely packed collagen fibril structure similar to other diseases with disrupted Transforming growth factor beta (TGF-beta) signaling. Here we characterized TGF-beta3 signaling and the expression patterns of the critical extracellular matrix component versican in leiomyoma and myometrial tissue and cell culture. We also demonstrate the regulation of the versican variants by TGF-beta3. Using leiomyoma and matched myometrium from 15 patients, messenger RNA (mRNA) from leiomyoma and myometrium was analyzed by semiquantitative real time reverse transcription-polymerase chain reaction (RT-PCR), while protein analysis was done by western blot. Transforming growth factor beta3 transcripts were increased 4-fold in leiomyoma versus matched myometrium. Phosphorylated-TGF-beta RII and phosphorylated-Smad 2/3 complex were greater in leiomyoma as documented by Western blot. The inhibitor Smad7 transcripts were decreased 0.44-fold. The glycosaminoglycan (GAG)-rich versican variants were elevated in leiomyoma versus myometrial tissue: specifically V0 (4.27 +/- 1.12) and V1 (2.01 +/- 0.27). Treatment of leiomyoma and myometrial cells with TGF-beta3 increased GAG-rich versican variant expression 7 to 12 fold. Neutralizing TGF-beta3 antibody decreased the expression of the GAG-rich versican variants 2 to 8 fold in leiomyoma cells. Taken together, the aberrant production of excessive and disorganized extracellular matrix that defines the leiomyoma phenotype involves the activation of the TGF-beta signaling pathway and excessive production of GAG-rich versican variants." @default.
- W2091700826 created "2016-06-24" @default.
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- W2091700826 date "2009-12-01" @default.
- W2091700826 modified "2023-10-02" @default.
- W2091700826 title "Transforming Growth Factor β3 Regulates the Versican Variants in the Extracellular Matrix-Rich Uterine Leiomyomas" @default.
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- W2091700826 doi "https://doi.org/10.1177/1933719109343310" @default.
- W2091700826 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2857408" @default.
- W2091700826 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19700613" @default.
- W2091700826 hasPublicationYear "2009" @default.
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