Table 1. Tumorigenic Potential of MSC-lung Carcinoma Hybrids.
Tumor incidence/number of injections | ||||||
Number of cells injected | A549 | A549/MSC | H460 | H460/MSC | SK-MES-1 | SK-MES-1/MSC |
1×106 | 8/10 | 10/10 | 9/10 | 10/10 | 8/10 | 10/10 |
1×105 | 3/10 | 9/10* | 3/10 | 8/10* | 4/10 | 8/10* |
1×104 | 0/10 | 5/10* | 0/10 | 4/10* | 0/10 | 6/10* |
1×103 | 0/10 | 2/10* | 0/10 | 2/10* | 0/10 | 3/10* |
Note: Data are given as number/total (percentage). Control MSCs implanted alone into 10 mice (inoculum, 1×106 cells/mouse) were nontumorigenic.
*Statistically significant difference by two-sided Fisher’s exact test with respect to the rate of tumor incidence by parental lung cancer cells (P<0.001).