Cardiomyocyte Maturation Assessment
Cardiomyocyte Maturation Assessment - Related Videos
10:11
Maturation of Human Stem Cell-derived Cardiomyocytes in Biowires Using Electrical Stimulation
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Cited by 24 •
2017
The cardiac biowire platform is an in vitro method used to mature human embryonic and induced pluripotent stem cell-derived cardiomyocytes (hPSC-CM) by combining three-dimensional cell cultivation with electrical stimulation. This manuscript presents the detailed setup of the cardiac biowire platform.
07:03
Mouse Oocyte Microinjection, Maturation and Ploidy Assessment
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Cited by 75 •
2011
Oocytes are prone to aneuploidy due to errors in chromosome segregation during meiotic maturation. Aneuploid eggs can cause infertility, miscarriages or developmental disorders like Down syndrome. Here, we describe methods to introduce materials of choice into oocytes and methods to study meiotic maturation and assess ploidy.
08:03
Simultaneous Assessment of Cardiomyocyte DNA Synthesis and Ploidy: A Method to Assist Quantification of Cardiomyocyte Regeneration and Turnover
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Cited by 25 •
2016
Quantification of cardiomyocyte turnover is challenging. The protocol described here makes an important contribution to this challenge by enabling accurate and sensitive quantification of neo-cardiomyocyte nuclei generation and nuclei ploidy.
09:29
Assessing Cardiomyocyte Subtypes Following Transcription Factor-mediated Reprogramming of Mouse Embryonic Fibroblasts
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Cited by 5 •
2017
This manuscript describes a step-by-step protocol for the generation and quantification of diverse reprogrammed cardiac subtypes using a retrovirus-mediated delivery of Gata4, Hand2, Mef2c, and Tbx5.
10:56
Analysis of Cardiomyocyte Development using Immunofluorescence in Embryonic Mouse Heart
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Cited by 9 •
2015
Mutations that lead to congenital heart defects benefit from in vivo investigation of cardiac structure during development, but high-resolution structural studies in the mouse embryonic heart are technically challenging. Here we present a robust immunofluorescence and image analysis method to assess cardiomyocyte-specific structures in the developing mouse heart.
FAQs
No individual feature fully captures the transition toward an adult-like cardiomyocyte state. Morphology and sarcomere organization describe structural development, while contractile behavior, electrical activity, calcium handling, gene expression, and metabolic characteristics address complementary functional and cellular properties. Combining these readouts provides a more informative assessment and helps identify cases in which one maturation feature improves while others remain limited.
Structural evaluation can examine cell morphology and the organization of sarcomeres, the contractile units within heart muscle cells. Functional assessment adds contractile behavior, electrical activity, and calcium handling. Together, these measurements connect cellular architecture with performance, helping researchers distinguish cells that merely display cardiac features from cultures or tissues showing broader adult-like structural and functional characteristics.
Gene expression and metabolic characteristics provide cellular-level context that may not be apparent from morphology or contraction alone. Including these measures broadens the assessment beyond visible structure and immediate function, allowing researchers to compare several dimensions of developmental state. This is particularly useful when interpreting stem cell cultures, engineered heart tissues, or disease models with incomplete or uneven maturation.
Begin by selecting a model, such as a stem cell culture, engineered heart tissue, or disease model, and then evaluate complementary structural, functional, molecular, and metabolic indicators. Measurements may include morphology, sarcomere organization, contractile behavior, electrical activity, calcium handling, gene expression, and metabolic characteristics. Comparing the combined profile helps determine how closely the model approaches an adult-like cardiomyocyte state.
Researchers can apply the assessment when validating cardiac differentiation protocols or determining whether a culture has developed beyond an immature state. The resulting profile can reveal strengths and limitations that are not evident from differentiation alone. This information supports decisions about whether a stem cell-derived model is sufficiently representative for later studies, including drug-response evaluation or engineered tissue development.
Maturation assessment helps researchers judge whether engineered heart tissues and other cardiac models provide a meaningful basis for evaluating drug responses. It also supports regenerative medicine by identifying how closely generated cardiomyocytes resemble adult cells and by exposing limitations that could affect model reliability. These findings can guide interpretation of experimental outcomes and comparison between cardiac model systems.