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Table 1 Tumor engraftment at liver and subcutaneous implantation sites using human uveal melanoma cell lines

From: Establishment of an orthotopic patient-derived xenograft mouse model using uveal melanoma hepatic metastasis

Method

Cell lines

Cell number (×106)

Tumor chunk (mm3)

Injection site

Mouse number

Tumor engraftment rate (median tumor volume, range) (mm3)

Metastasis

Ki67

 % positive cells (median, range)

4 weeks

8 weeks

12 weeks

Intra-hepatic

Extra-hepatic

Needle injection

UM001

1

NA

Liver

3

NA

3/3 (123.8, 73.7–126.0)

NA

0/3a

0/3

44.9, 42.6–48.2

1

NA

SC

3

0/3

0/3

0/3

0/3

0/3

NA

2

NA

SC

3

0/3

0/3

0/3

0/3

0/3

NA

5

NA

SC

3

0/3

0/3

0/3b

0/3

0/3

NA

10

NA

SC

3

0/3

0/3

0/3b

0/3

0/3

NA

UM004

1

NA

Liver

3

3/3 (225.2, 102.8–259.0)

NA

NA

0/3a

0/3

85.8, 82.5–90.4

1

NA

SC

3

3/3 (0.49, 0.08–0.6)

3/3 (852.5, 465.4–1418.4)

NAc

0/3

0/3

77.4, 64.0–80.1

Surgical implantation

UM001

NA

1

Liver

5

NAd

NA

NA

0/5

0/5

18.2, 10.3–28.9

NA

1

Liver

5

NA

5/5 (153.7, 150.7–251.3)

NA

0/5

0/5

42.6, 30.3–56.8

NA

1

SC

5

NA

5/5 (1.12, 0.32–2.25)

NA

0/5

0/5

14.1, 7.2–18.5

UM004

NA

1

Liver

5

NAd

NA

NA

0/5

0/5

46.1, 28.1–64.0

NA

1

Liver

5

5/5 (309.3, 253.9–518.3)

NA

NA

0/5

0/5

88.5, 80.9–96.4

NA

1

SC

5

5/5 (21.9, 21.43–28.11)

NA

NA

0/5

0/5

44.1, 25.4–57.9

  1. SC subcutaneous site, NA not applicable
  2. aDaughter nodules appeared around the main tumor. Metastatic tumors did not emerge in the other lobe
  3. bOnly pigment was visually detected at sacrifice; there were no measurable tumors
  4. cAll mice were sacrificed earlier than 12 weeks post-implantation, because tumor diameter reached 15 mm or more
  5. dThese mice were sacrificed at 1 day post implantation