Isolation and culture method for primary mice or rat cardiac muscle cells

Abstract

The invention discloses an isolation and culture method for primary mice or rat cardiac muscle cells. The isolation and culture method employs specially-prepared compound enzyme for long-term digestion, so the obtained cells are large in gross quantity and high in both isolation degree and motility rate; due to different acquisition manners, pollution and influence of residual blood in a heart are eradicated and the probability of contamination of the acquired cardiac muscle cells by bacteria, fungi and other cells is low; and the method can realize subculturing, so a good cell culture scheme is provided for related research based on culture of cardiac muscles.

Description

technical field [0001] The invention relates to the technical field of cell culture, in particular to a method for isolating and culturing primary mouse or rat cardiomyocytes. Background technique [0002] Cardiomyocytes are the most energy-rich cells in the body. They are highly oxygenated cells and have a large number of mitochondria. Cardiomyocytes make up 75% of the volume of the heart, but only make up one-third of the total number of cells in the heart. Although differentiated cardiomyocytes are difficult to proliferate, however, hypertrophy can occur in the heart upon stimulation by alpha-1 adrenaline through the Ras / MEK pathway. The membrane of all cardiomyocytes can spontaneously produce rhythmic depolarization and repolarization. The contraction of cardiomyocytes is myogenic and does not depend on nerve stimulation. There is a complex network of signaling systems in cardiomyocytes that regulate the rhythmic contraction and contraction of the heart. The loss of ...

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Problems solved by technology

And with the passage of cells, the number of cardiomyocytes will decrease, and the proportion of myocardial fibrosis will increase, which will seriously affect the experimental results.

[0005] Secondly, due to the particularity of the heart collection process, even external flushing plus the heart’s own rhythmic contraction to discharge most of the blood in the heart is still not enough to clear the blood contamination, so when the myocardial cell tissue pieces are removed, a small amount of blood is often mixed. This part of the blood greatly increases the possibility of contamination by various bacteria, cells, and fungi in the subsequent cell culture process.

In order to completely overcome the influence of this part of blood contamination, those skilled in the art often use the method of cardiac perfusion. However, the cardiac perfusion operation of mice / rats is difficult and time-consuming, and is not suitable for application.

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