Article

In Vitro

, Volume 12, Issue 10, pp 670-677

The origin and characteristics of a pig kidney cell strain, LLC-PK1

  • R. N. HullAffiliated withLilly Research Laboratories, Division of Eli Lilly and Company
  • , W. R. CherryAffiliated withLilly Research Laboratories, Division of Eli Lilly and Company
  • , G. W. WeaverAffiliated withLilly Research Laboratories, Division of Eli Lilly and Company

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Summary

A stable epithelial-like pig kidney cell strain has been established. This strain has been carried through more than 300 serial passages, has remained free of microbial and viral contaminants, and has retained a near diploid number of chromosomes. Attempts to produce tumors with these cells in immunosuppressed laboratory animals have been uniformly negative. The cells have grown rapidly in monolayer cultures with a split ratio of 1 to 15 at weekly intervals, but have failed to proliferate in suspension cultures. A subline adapted to growth on serum-free medium 199 has been carried through 145 passages on this medium. Several unusual morphologic features have been observed in these cultures including three-dimensional “domelike” structures. These cells have been found susceptible to some viruses and have been especially useful for viruses of domestic animals. LLC-PK1 cells have produced significant levels of plasminogen activator.

Key words

pig kidney cells dome-like structures chemically defined media plasminogen activator virus susceptibility