| Convective tissue movements play a major role in avian endocardial morphogenesis. | |
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MedLine Citation:
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PMID: 22280991 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Endocardial cells play a critical role in cardiac development and function, forming the innermost layer of the early (tubular) heart, separated from the myocardium by extracellular matrix (ECM). However, knowledge is limited regarding the interactions of cardiac progenitors and surrounding ECM during dramatic tissue rearrangements and concomitant cellular repositioning events that underlie endocardial morphogenesis. By analyzing the movements of immunolabeled ECM components (fibronectin, fibrillin-2) and TIE1 positive endocardial progenitors in time-lapse recordings of quail embryonic development, we demonstrate that the transformation of the primary heart field within the anterior lateral plate mesoderm (LPM) into a tubular heart involves the precise co-movement of primordial endocardial cells with the surrounding ECM. Thus, the ECM of the tubular heart contains filaments that were associated with the anterior LPM at earlier developmental stages. Moreover, endocardial cells exhibit surprisingly little directed active motility, that is, sustained directed movements relative to the surrounding ECM microenvironment. These findings point to the importance of large-scale tissue movements that convect cells to the appropriate positions during cardiac organogenesis. |
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Authors:
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Anastasiia Aleksandrova; Andras Czirok; Andras Szabo; Michael B Filla; M Julius Hossain; Paul F Whelan; Rusty D Lansford; Brenda J Rongish |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-4 |
Journal Detail:
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Title: Developmental biology Volume: - ISSN: 1095-564X ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372762 Medline TA: Dev Biol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011. Published by Elsevier Inc. |
Affiliation:
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Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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