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Isolation and Identification of Extravascular Immune Cells of the Heart
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Multiple immunophenotypes of cardiac telocytes.

Yuqiao Chang1, Cixia Li2, Zhaohui Lu2

  • 1Department of Human Anatomy and Embryology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China; Henan Key Laboratory of Medical Tissue Regeneration, Xinxiang Medical University, Xinxiang 453003, PR China.

Experimental Cell Research
|August 25, 2015
PubMed
Summary
This summary is machine-generated.

Cardiac telocytes (TCs) exhibit dynamic shape changes and extend long prolongations (telopodes) in vitro. These findings highlight the diverse phenotypes of TCs, crucial for understanding their role in heart development.

Keywords:
Cardiac telocytesDifferentiationImmunophenotypeLive Cell Imaging System

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Area of Science:

  • Cardiology
  • Cell Biology
  • Developmental Biology

Background:

  • Telocytes (TCs) form a network within the heart's interstitium, suggesting a role in cardiac development.
  • The dynamic behavior, including cell shape and prolongations (telopodes), of cardiac TCs has been poorly understood.

Purpose of the Study:

  • To investigate the dynamics of telopode extension in cardiac TCs.
  • To identify the multiple phenotypes of cardiac TCs cultured in vitro.

Main Methods:

  • Cardiac TCs were isolated from neonatal rats via enzyme digestion.
  • Identification used light microscopy, immunofluorescence (vimentin, c-kit, CD34, Nanog, Sca-1), and scanning electron microscopy (SEM).
  • Live cell imaging analyzed cell shape dynamics and telopode extension.

Main Results:

  • Cardiac TCs showed diverse shapes (piriform, spindle, triangular) with long, slender telopodes.
  • Cell bodies continuously changed shape, and prolongations extended gradually for about 1.5 hours after adherence.
  • TCs expressed markers for mesenchymal (vimentin), hematopoietic stem (CD34), embryonic stem (Nanog), and cardiac stem cells (c-kit, Sca-1).

Conclusions:

  • Cultured cardiac TCs exhibit multiple phenotypes in vitro.
  • These diverse phenotypes are likely significant for their functional roles in heart development.