Immortality of pig liver parenchymal cells

Immortalization of pig liver parenchymal cellsIt is through specific technological means that these cells can grow and divide indefinitely under laboratory conditions, unlike normal cells that age and eventually stop dividing due to shortened telomeres. This process usually involves the following steps:

1TheSV40bigTIntroduction of antigens:This is one of the most common methods of immortality.SV40bigTAntigens can activate cell cycle regulatory proteins and promote cell entrySPeriod and continuous division. By encodingSV40bigTTransfection of antigen plasmids into primary pig liver cells can induce their immortality.

2Genetic engineering modification:exceptSV40bigTAntigens can also achieve cell immortality through other genetic engineering methods. For example, by knocking in or overexpressing certain genes, such as telomerase（TERT）The gene can extend the telomeres of cells, thereby achieving infinite cell proliferation.

3Optimization of cultivation conditions:Immortalized pig liver parenchymal cells need to be cultured under specific conditions to maintain their growth and function. This includes using suitable culture media, adjusting the temperature of the incubator, andCO2Concentration, as well as control of cell density and passage ratio.

4Functional verification:The immortalized cells need to undergo a series of functional validation experiments to ensure that they maintain similar biological characteristics to primary cells, such as liver cellsteSome enzyme activities, metabolic functions, and secretion functions.

Immortal pig liver parenchymal cellsThe application is very extensive, especially inConstruction of in vitro models, drug screening, study of disease mechanisms, and the field of regenerative medicineThrough immortalization, these cells can provide long-term stable materials for research without the need to frequently obtain fresh cells from animal bodies, thereby improving the efficiency and reproducibility of research.