LH1307

ADC Targets in Oncology

2026-04-10

Cell Line	Type	Value	Description	References
CHO-K1	GI₅₀	11.8 μM Compound: 2b	Cytotoxicity against CHOK1 cells stably expressing human PDL1 co-cultured with human Jurkat T cell expressing human PD1 assessed as growth inhibition measured after 24 hrs by XTT assay Cytotoxicity against CHOK1 cells stably expressing human PDL1 co-cultured with human Jurkat T cell expressing human PD1 assessed as growth inhibition measured after 24 hrs by XTT assay	[PMID: 31298541]
HEK293	IC₅₀	3 nM Compound: 2b	Inhibition of human Fc-tagged PD1 N-terminal domain (Leu25 to Gln167 residues) expressed in HEK293 cells/human His-tagged PDL1 (Phe19 to Arg238 residues) expressed in HEK293 cells protein-protein interaction after 1 hr by APC-labeled anti-His antibody/Eu- Inhibition of human Fc-tagged PD1 N-terminal domain (Leu25 to Gln167 residues) expressed in HEK293 cells/human His-tagged PDL1 (Phe19 to Arg238 residues) expressed in HEK293 cells protein-protein interaction after 1 hr by APC-labeled anti-His antibody/Eu-	[PMID: 31298541]
Jurkat	EC₅₀	763 nM Compound: 2b	Inhibition of human PD1 stably expressed in human Jurkat T cells co-expressing NFAT-induced luciferase/human PDL1 stably expressed in CHOK1 cells co-expressing aAPC protein-protein interaction assessed as increase in NFAT signaling measured after 6 hrs by Inhibition of human PD1 stably expressed in human Jurkat T cells co-expressing NFAT-induced luciferase/human PDL1 stably expressed in CHOK1 cells co-expressing aAPC protein-protein interaction assessed as increase in NFAT signaling measured after 6 hrs by	[PMID: 31298541]
Jurkat	EC₅₀	79 nM Compound: 2b	Inhibition of PD1/PDL1 interaction in human Jurkat cells co-cultured with human U2OS cells expressing PDL1 assessed as reduction in SHP1 recruitment preincubated with U2OS cells for 60 mins followed by Jurkat cell addition and measured after 2 hrs by Path Inhibition of PD1/PDL1 interaction in human Jurkat cells co-cultured with human U2OS cells expressing PDL1 assessed as reduction in SHP1 recruitment preincubated with U2OS cells for 60 mins followed by Jurkat cell addition and measured after 2 hrs by Path	[PMID: 31298541]
Jurkat	GI₅₀	11.8 μM Compound: 2b	Cytotoxicity against human Jurkat T cell expressing human PD1 co-cultured with CHOK1 cells stably expressing human PDL1 assessed as growth inhibition measured after 24 hrs by XTT assay Cytotoxicity against human Jurkat T cell expressing human PD1 co-cultured with CHOK1 cells stably expressing human PDL1 assessed as growth inhibition measured after 24 hrs by XTT assay	[PMID: 31298541]

Cell Line

Type

Value

Description

References

CHO-K1

GI₅₀

11.8 μM

Compound: 2b

Cytotoxicity against CHOK1 cells stably expressing human PDL1 co-cultured with human Jurkat T cell expressing human PD1 assessed as growth inhibition measured after 24 hrs by XTT assay

[PMID: 31298541]

HEK293

IC₅₀

3 nM

Compound: 2b

Inhibition of human Fc-tagged PD1 N-terminal domain (Leu25 to Gln167 residues) expressed in HEK293 cells/human His-tagged PDL1 (Phe19 to Arg238 residues) expressed in HEK293 cells protein-protein interaction after 1 hr by APC-labeled anti-His antibody/Eu-

[PMID: 31298541]

Jurkat

EC₅₀

763 nM

Compound: 2b

Inhibition of human PD1 stably expressed in human Jurkat T cells co-expressing NFAT-induced luciferase/human PDL1 stably expressed in CHOK1 cells co-expressing aAPC protein-protein interaction assessed as increase in NFAT signaling measured after 6 hrs by

[PMID: 31298541]

Jurkat

EC₅₀

79 nM

Compound: 2b

Inhibition of PD1/PDL1 interaction in human Jurkat cells co-cultured with human U2OS cells expressing PDL1 assessed as reduction in SHP1 recruitment preincubated with U2OS cells for 60 mins followed by Jurkat cell addition and measured after 2 hrs by Path

[PMID: 31298541]

Jurkat

GI₅₀

11.8 μM

Compound: 2b

Cytotoxicity against human Jurkat T cell expressing human PD1 co-cultured with CHOK1 cells stably expressing human PDL1 assessed as growth inhibition measured after 24 hrs by XTT assay

[PMID: 31298541]

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

Powder

-20°C

3 years

4°C

2 years

In solvent

-80°C

6 months

-20°C

1 month

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