The recombinant proregion of transforming growth factor beta1 (latency-associated peptide) inhibits active transforming growth factor beta1 in transgenic mice.

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The recombinant proregion of transforming growth factor beta1 (latency-associated peptide) inhibits active transforming growth factor beta1 in transgenic mice.

All three isoforms of transforming growth factors beta (TGF-betal, TGF-beta2, and TGF-beta3) are secreted as latent complexes and activated extracellularly, leading to the release of the mature cytokines from their noncovalently associated proregions, also known as latency-associated peptides (LAPs). The LAP region of TGF-beta1 was expressed in a baculovirus expression system and purified to ho...

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Constitutive expression of mature transforming growth factor beta1 in the liver accelerates hepatocarcinogenesis in transgenic mice.

Transforming growth factor beta-1 (TGF-beta1) is a potent inhibitor of hepatocyte growth both in vivo and in vitro. In this study, we analyzed the effects of TGF-beta1 on both naturally occurring and diethylnitrosamine-induced hepatocarcinogenesis using single transgenic TGF-beta1 and double transgenic c-myc/TGF-beta1 mice in which the expression of both transgenes was targeted to the liver. He...

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Conditional overexpression of active transforming growth factor beta1 in vivo accelerates metastases of transgenic mammary tumors.

To address the role of transforming growth factor (TGF) beta in the progression of established tumors while avoiding the confounding inhibitory effects of TGF-beta on early transformation, we generated doxycycline (DOX)-inducible triple transgenic mice in which active TGF-beta1 expression could be conditionally regulated in mouse mammary tumor cells transformed by the polyomavirus middle T anti...

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Lens-specific expression of transforming growth factor beta1 in transgenic mice causes anterior subcapsular cataracts.

Transgenic mice were generated by microinjection of a construct containing a self-activating human TGF-beta1 cDNA driven by the lens-specific alphaA-crystallin promoter. Seven transgenic founder mice were generated, and four transgenic lines expressing TGF-beta1 were characterized. By postnatal day 21, mice from the four families exhibited anterior subcapsular cataracts. The lenses in these mic...

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Myofibroblasts and Transforming Growth Factor-Beta1 in Reactive Gingival Overgrowths

OBJECTIVES The purpose of this study was to evaluate the oral health-related quality of life of patients treated with implant-supported mandibular overdentures and to compare the attachment systems used. MATERIAL AND METHODS The presence of myofibroblasts as well as transforming growth factor-beta1 was examined in twenty cases of fibrous epulis and 22 ossifying fibrous epulis, using immunohis...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1996

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.93.12.5877