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Vol. 154, No. 2, 1995
Issue release date: 1995
Section title: Original Paper
Acta Anatomica 1995;154:111–119
(DOI:10.1159/000147757)

A Subset of SBA Lectin-Binding Proteins Isolated from Myocardial-Conditioned Media Transforms Cardiac Endothelium into Mesenchyme

Sinning A.R. · Hewitt C.C. · Markwald R.R.
aDepartment of Anatomy, University of Mississippi Medical Center, Jackson, Miss., bDepartment of Anatomy and Cell Biology, Medical University of South Carolina, Charleston, S.C., USA

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: 3/17/1995
Accepted: 10/16/1995
Published online: 7/17/2008

Number of Print Pages: 9
Number of Figures: 0
Number of Tables: 0

ISSN: 1422-6405 (Print)
eISSN: 1422-6421 (Online)

For additional information: http://www.karger.com/CTO

Abstract

It has been shown that the inductively active proteins for cardiac mesenchyme formation are localized to a particulate form of extracellular matrix that resembles adheron-like complexes. These complexes are extractable from the embryonic heart using EDTA and can be visualized with the lectin SBA (Glycine max). In addition, the growth medium obtained from embryonic myocardial cell cultures has also been shown to support mesenchyme formation. However, except for the identification of EDTA extract and conditioned media, all previous experiments analyzing this system have relied on negative type results (i.e. the loss of biological activity) to show a relationship between the particulate matrix and the transformation process. We report here that SBA affinity chromatography can be used to partially purify a subset of proteins from myocardial conditioned medium which elicits the transformation of endothelial cells into mesenchyme. In addition, a polyclonal antibody made against this subset of proteins is specific for the in situ particulate matrix and recognizes several proteins in conditioned medium and EDTA extracts. This antibody is also specific for matrix particulates in other aeas of the embryo that undergo an epithelial/mesenchymal interaction. These results provide the most direct evidence to date that conditioned medium is equivalent to the hypothesized inductively active particulate matrix. In addition, the data provides evidence that conditioned medium can be used to identify the functional role of the components of the particulate matrix in mesenchyme formation.


  

Author Contacts

Dr. Allan R. Sinning, Department of Anatomy, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS 39216 (USA)

  

Article Information

Received: March 17, 1995
Accepted: October 16, 1995
Published online: July 17, 2008
Number of Print Pages : 9

  

Publication Details

Cells Tissues Organs (in vivo, in vitro)

Vol. 154, No. 2, Year 1995 (Cover Date: 1995)

Journal Editor: Denker H.-W. (Essen), English A.W. (Atlanta, Ga.)
ISSN: 1422–6405 (Print), eISSN: 1422–6421 (Online)

For additional information: http://www.karger.com/CTO


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: 3/17/1995
Accepted: 10/16/1995
Published online: 7/17/2008

Number of Print Pages: 9
Number of Figures: 0
Number of Tables: 0

ISSN: 1422-6405 (Print)
eISSN: 1422-6421 (Online)

For additional information: http://www.karger.com/CTO


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