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Updated: Jun 6, 2026

A Human Ex Vivo Atherosclerotic Plaque Model to Study Lesion Biology
Published on: May 6, 2014
Expression of mRNA isoforms of latent transforming growth factor-β binding protein-1 in coronary atherosclerosis and
Rahmi Oklü1, Robin Hesketh, Stephan Wicky
1Harvard Medical School, Massachusetts General Hospital, Vascular Imaging and Interventions, 55 Fruit St., Boston, MA 02155, USA. roklu@partners.org.
Abstract:
Latent transforming growth factor-β binding protein-1 (LTBP1) has been implicated in the control of secretion, localization, and activation of TGFβ (transforming growth factor-β). We developed a quantitative reverse-transcriptase polymerase chain reaction (Q-RT-PCR) assay using an RNA internal standard to examine the expression of three alternatively spliced isoforms of LTBP1 (LTBP1Δ41, LTBP1Δ53, and LTBP1Δ55) in a variety of human tissues. The assays were also used to determine the expression of LTBP1L and LTBP1S isoforms and total LTBP1. The Q-RT-PCR assays were highly reproducible and showed that in most tissues LTBP1Δ55 and LTBP1L were minor components of LTBP1. The proportion of LTBP1Δ41 ranged from 2% of total LTBP1 mRNA in early coronary atherosclerotic lesions to 54% in advanced lesions.
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