HL-1 Cardiac Muscle Cell Line is an immortalized mouse cardiomyocyte cell line able to continuously divide and spontaneously contract while maintaining a differentiated cardiac phenotype. HL-1 can be serially passaged without losing its differentiated cardiac myocyte phenotype, including morphological, biochemical, and electrophysiological properties. HL-1 cells have been used to study normal cardiomyocyte function with regard to signaling, electrical, metabolic, and transcriptional regulation as well as to address pathological conditions such as hypoxia, hyperglycemia-hyperinsulinemia, apoptosis, and ischemia-reperfusion.
The HL-1 line was derived from AT-1 subcutaneous tumor excised from an adult female C57BL/6J mouse. The parental AT-1 line was originally derived from an atrial tumor growing in a transgenic mouse in which expression of the SV40 large T-antigen was targeted to atrial cardiomyocytes via the atrial natriuretic factor (ANF) promoter.
