Table 3.
Paired-label biodistribution of L8A4 labeled with 177Lu using C-DOTA and with 125I using SGMIB in athymic mice with subcutaneous U87MG. EGFR human glioma xenografts
| Nuclide | Tissue | Day 1 | Day 4 | Day 8 |
|---|---|---|---|---|
| 177Lu | Blood | 10.95 ± 1.53 | 2.47 ± 1.80 | 1.33 ± 1.60 |
| Liver | 13.00 ± 4.79 | 9.34 ± 1.71 | 5.39 ± 2.54 | |
| Spleen | 5.43 ± 1.50 | 3.61 ± 1.02 | 2.47 ± 1.84 | |
| Kidneys | 4.26 ± 0.70 | 1.28 ± 0.60 | 1.22 ± 0.67 | |
| Lung | 4.21 ± 1.28 | 0.99 ± 0.70 | 0.72 ± 0.67 | |
| Bone | 4.49 ± 0.84 | 1.21 ± 0.53 | 2.39 ± 1.55 | |
| Muscle | 1.32 ± 0.26 | 0.30 ± 0.14 | 0.25 ± 0.16 | |
| Brain | 0.37 ± 0.05 | 0.22 ± 0.37 | 0.05 ± 0.04 | |
| Thyroida | 0.17 ± 0.09 | 0.04 ± 0.03 | 0.06 ± 0.05 | |
| Tumor | 23.52 ± 3.14 | 12.04 ± 6.29 | 7.47 ± 6.89 | |
| 125I | Blood | 13.93 ± 3.17 | 8.16 ± 1.08 | 3.82 ± 3.70 |
| Liver | 4.15 ± 0.85 | 1.78 ± 0.25 | 1.14 ± 1.07 | |
| Spleen | 2.89 ± 0.59 | 1.62 ± 0.18 | 0.81 ± 0.78 | |
| Kidneys | 3.47 ± 0.63 | 1.61 ± 0.36 | 1.00 ± 0.93 | |
| Lung | 5.46 ± 1.86 | 2.49 ± 0.53 | 1.60 ± 1.50 | |
| Bone | 2.47 ± 0.21 | 0.87 ± 0.17 | 0.57 ± 0.41 | |
| Muscle | 1.64 ± 0.32 | 0.59 ± 0.09 | 0.40 ± 0.32 | |
| Brain | 0.48 ± 0.08 | 0.41 ± 0.46 | 0.13 ± 0.10 | |
| Thyroida | 0.29 ± 0.11 | 0.22 ± 0.10 | 0.18 ± 0.12 | |
| Tumor | 20.76 ± 5.02 | 11.24 ± 3.09 | 7.37 ± 6.27 |
Values presented as percent injected dose per gram tissue (% ID/g), mean ″ standard deviation; five mice per group.
Percent injected dose in the thyroid.