Words similar to tgfβ-dependent
Example sentences for: tgfβ-dependent
How can you use “tgfβ-dependent” in a sentence? Here are some example sentences to help you improve your vocabulary:
It is remarkable that a constitutively active form of JNK activator MKK and Smad7 are able to cooperatively downregulate TGFβ-responsive promoters [ 53 ] . It is quite possible that a Smad7/JNK synergistic interaction is involved in the TGFβ-dependent downregulation of Ese-1/Esx expression, where JNK alone might mediate the initiation of the TGFβ-induced repression.
The strongest effect of SB-203580 was found on the TGFβ-dependent expression of pthrp and upa . In these cases, the inhibitor completely eliminated responsiveness to TGFβ.
The smad7 gene contains a perfect palindromic Smad binding element (GTCTAGAC) while the pai-1 and the pthrp promoters harbor AGAC tandem repeats [ 19 33 ] which binds Smad proteins less efficiently [ 34 ] . The upa gene contains only an AP1-binding site which resembles the Smad3/4-responsive AGAC motif [ 35 ] . A weaker binding site could require Smad3 to be present at higher concentrations for efficient binding and would make TGFβ-dependent transcription from a gene more vulnerable to reduced nuclear accumulation of the Smad3 protein.
JNK has been described to drive TGFβ-dependent fibronectin synthesis independent of Smad4 and p38 [ 51 ] . In contrast to Smad3, JNK is activated by the TGFβ receptor I in a way that does not require the kinase domain [ 52 ] . This supports the notion that activation of Smad3 and JNK by TGFβ are independent events.
One way by which Smad7 can inhibit TGFβ-dependent gene expression is by blocking phosphorylation, and, hence, nuclear import of Smad3 and Smad2 [ 23 ] . More recent data showing that Smad7 is able to interact with histone deacetylases suggest an additional role for Smad7 as a transcriptional co-repressor [ 50 ] . Thus, Smad7 might interfere directly with Ese-1/Esx gene transcription.
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