Table 2. Mouse melanoma TIDC characteristics.
| Model | DC marker | Frequency | DC subpopulation | Characteristics |
|---|---|---|---|---|
|
Scid-MV3 xenograft105 |
BSA-I binding |
~35/5 high power fields |
- |
- |
| B16/F10. s.c.73 |
CD11c+, MHCII+ |
- |
All CD11b+; further negative for EpCAM, PDCA-1, CD4, CD8α |
Partially activated; reduced capacity for protein uptake and subsequent MHC II presentation; less sensitive to TLR stim. |
| B16/F10. s.c.75 |
CD11c+, MHCII+ |
- |
All CD11b+; most F4/80+ ~23.5%, GR1+; few pDC |
GR1+ less mature populations, fails to stimulate MLR, produce more IL-10; protein pulsed Gr1+ DC poorly activate OVA-specific CD4 and CD8 T cells in vivo |
| B16/F10 sec.c.77 |
CD11c+, MHCII+ |
|
|
Pre-DC (Lin-CD11c+MHCII-Flt3+) cells are recruited in the tumor, differentiate and activated CD8 T cells in vitro upon peptide pulsing |
| B16/F10 sec.c.92 |
CD11c+ |
- |
- |
TIDC express high levels of SOCS3 and have reduced M2-PK activity. |
| B16-OVA s.c.74 |
CD11c+, MHCII+ |
~30% of TIL |
Mostly CD11b+, ~5% pDC, hardly CD207+ |
Immature phenotype; fail to activate OVA-specific CD4 and CD8 T cells ex vivo |
| B16-OVA s.c.70 |
CD11c+ |
~20% of TIL |
~33% CD11b+MHCIIhigh, rest CD11b- MHCIImedium |
Partially mature; no in vitro activation of OVA-specific CD4 and poor activation of CD8 T cells |
| B16/F10 sec.c71,81 |
CD11c+, MHCII+ |
0.13 ± 0.07% of total cells |
~3% pDC, ~2.25% CD8αDC, > 95% non-pDC non CD8α |
Decreased number compared with skin; Immature phenotype, particle uptake in vivo normal; protective upon transfer. |
| K17–3571 |
CD11c+, MHCII+ |
4.0 ± 0.22% of total cells |
~15% pDC, ~12% CD8αDC |
Increased number compared with skin; immature phenotype; particle uptake in vivo normal |
| Tyr:N-RasQ61K+ DMBA/C3H6O71 |
CD11c+, MHCII+ |
0.02 ± 0.004 of total cells |
~58% pDC, ~40% non pDC non CD8αDC |
Decreased number compared with skin; immature phenotype |
| MT/ret72 | CD11c+, MHCII+ | 3–10% of TIL | - | Increasingly immature phenotype upon melanoma progression |