Table 4.
Paired-label biodistribution of L8A4 labeled with 177Lu using MeO-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 | 15.35 ± 2.41 | 3.73 ± 2.88 | 0.70 ± 0.62 |
| Liver | 7.88± 1.56 | 4.67 ± 1.55 | 2.89 ± 0.71 | |
| Spleen | 4.53 ± 0.52 | 2.72 ± 1.00 | 1.44 ± 0.55 | |
| Kidneys | 7.04 ± 0.69 | 3.53 ± 0.88 | 2.34 ± 0.32 | |
| Lung | 5.01 ± 1.82 | 1.34 ± 0.73 | 0.43 ± 0.27 | |
| Bone | 2.75 ± 0.40 | 0.90 ± 0.39 | 0.82 ± 0.29 | |
| Muscle | 1.65 ± 0.35 | 0.46 ± 0.19 | 0.15 ± 0.08 | |
| Brain | 0.51 ± 0.12 | 0.11 ± 0.07 | 0.04 ± 0.03 | |
| Thyroida | 0.26 ± 0.13 | 0.06 ± 0.05 | 0.02 ± 0.01 | |
| Tumor | 38.77± 8.55 | 26.30 ± 9.68 | 10.37 ± 4.05 | |
| 125I | Blood | 15.62 ± 2.32 | 4.09 ± 3.22 | 0.81 ± 0.71 |
| Liver | 4.07 ± 0.50 | 0.98 ± 0.71 | 0.31 ± 0.26 | |
| Spleen | 2.74 ± 0.49 | 0.76 ± 0.54 | 0.22 ± 0.17 | |
| Kidneys | 3.74 ± 0.57 | 0.88 ± 0.55 | 0.25 ± 0.20 | |
| Lung | 5.16 ± 1.83 | 1.23 ± 0.80 | 0.34 ± 0.29 | |
| Bone | 2.61 ± 0.38 | 0.63 ± 0.38 | 0.26 ± 0.16 | |
| Muscle | 1.67 ± 0.40 | 0.41 ± 0.20 | 0.11 ± 0.08 | |
| Brain | 0.52 ± 0.11 | 0.11 ± 0.07 | 0.03 ± 0.03 | |
| Thyroida | 0.31 ± 0.13 | 0.12 ± 0.06 | 0.08 ± 0.02 | |
| Tumor | 25.19 ± 4.77 | 7.52 ± 3.66 | 2.22 ± 1.44 |
Values presented as percent injected dose per gram tissue (% ID/g), mean ″ standard deviation; five mice per group.
Percent injected dose in the thyroid.