Int J Stem Cells.  2019 Nov;12(3):449-456. 10.15283/ijsc18087.

Comparison of the Cardiomyogenic Potency of Human Amniotic Fluid and Bone Marrow Mesenchymal Stem Cells

Affiliations
  • 1Stem Cell Research Centre, Department of Hematology, Sanjay Gandhi Post-Graduate Institute of Medical Sciences (SGPGIMS), Lucknow, India. soniya_nityanand@yahoo.co.in
  • 2Department of Maternal Reproductive Health, Sanjay Gandhi Post-Graduate Institute of Medical Sciences (SGPGIMS), Lucknow, India.

Abstract

BACKGROUND AND OBJECTIVES
Most studies in cardiac regeneration have explored bone marrow mesenchymal stem cells (BM-MSC) with variable therapeutic effects. Amniotic fluid MSC (AF-MSC) having extended self-renewal and multi-potent properties may be superior to bone marrow MSC (BM-MSC). However, a comparison of their cardiomyogenic potency has not been studied yet.
METHODS
The 5-azacytidine (5-aza) treated AF-MSC and BM-MSC were evaluated for the expression of GATA-4, Nkx2.5 and ISL-1 transcripts and proteins by quantitative RT-PCR and Western blotting, respectively as well as for the expression of cardiomyogenic differentiation markers cardiac troponin-T (cTNT), beta myosin heavy chain (βMHC) and alpha sarcomeric actinin (ASA) by immunocytochemistry.
RESULTS
The AF-MSC as compared to BM-MSC had significantly higher expression of GATA-4 (183.06±29.85 vs. 9.80±0.05; p<0.01), Nkx2.5 (8.3±1.4 vs. 1.82±0.32; p<0.05), and ISL-1 (39.59±4.05 vs. 4.36±0.39; p<0.01) genes as well as GATA-4 (2.01±0.5 vs. 0.6±0.1; p<0.05), NKx2.5 (1.9±0.14 vs. 0.8±0.2; p<0.01) and ISL-1 (1.7±0.3 vs. 0.9±0.1; p<0.05) proteins. The AF-MSC also had significantly elevated expression of cTNT (5.0×10⁴±0.6×10⁴ vs. 3.5 ×10⁴±0.8×10⁴; p<0.01), β-MHC (15.7×10⁴±0.9×10⁴ vs. 8.2×10⁴±0.6×10⁴; p<0.01) and ASA (18.6×10⁴±4.9×10⁴ vs. 13.1×10⁴±3.0×10⁴; p<0.05) than BM-MSC.
CONCLUSIONS
Our data suggest that AF-MSC have greater cardiomyogenic potency than BM-MSC, and thus may be a better source of MSC for therapeutic applications in cardiac regenerative medicine.

Keyword

Amniotic fluid mesenchymal stem cells; Bone marrow mesenchymal stem cells; Cardiomyogenic potency; Cardiac transcription factors; Cardiac structural markers

MeSH Terms

Actinin
Amniotic Fluid*
Antigens, Differentiation
Azacitidine
Blotting, Western
Bone Marrow*
Female
Humans*
Immunohistochemistry
Mesenchymal Stromal Cells*
Regeneration
Regenerative Medicine
Therapeutic Uses
Troponin T
Ventricular Myosins
Actinin
Antigens, Differentiation
Azacitidine
Therapeutic Uses
Troponin T
Ventricular Myosins
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