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B-hB7-H4 B16-F10
Common name
B7-H4 B16-F10 Catalog number     310909
Aliases VTCN1, B7S1, B7X, PRO1291, VCTN1 Disease   Melanoma
Organism
Mouse
Strain  C57BL/6
Tissue types Skin Tissue  Skin

Description 


The mouse B7h4 gene was replaced by human B7-H4 coding sequence in B-hB7-H4 B16-F10 cells. Human B7-H4 is highly expressed on the surface of B-hB7-H4 B16-F10 cells.


Application


B-hB7-H4 B16-F10 cells have the capability to establish tumors in vivo and can be used for efficacy studies.


Targeting strategy


The exogenous promoter and human B7-H4 coding sequence was inserted to replace part of murine exon 3 and all of exon 4. The insertion disrupts the endogenous murine B7h4 gene, resulting in a non-functional transcript.


Protein expression analysis 


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B7-H4 expression analysis in B-hB7-H4 B16-F10 cells by flow cytometry. Single cell suspensions from wild-type B16-F10 and B-hB7-H4 B16-F10 cultures were stained with species-specific anti-B7-H4 antibody. Human B7-H4 was detected on the surface of B-hB7-H4 B16-F10 cells but not wild-type B16-F10 cells. The 2-D09 clone of B-hB7-H4 B16-F10 cells was used for in vivo experiments.


Tumor growth curve & Body weight changes


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Subcutaneous homograft tumor growth of B-hB7-H4 B16-F10 cells. Wild-type B16-F10 and B-hB7-H4 B16-F10 cells (2x105) were subcutaneously implanted into C57BL/6 mice (female, 7-week-old, n=5). Tumor volume and body weight were measured twice a week. (A) Average tumor volume ± SEM. (B)  Body weight (Mean± SEM). Volume was expressed in mm3 using the formula: V=0.5 X long diameter X short diameter2. As shown in panel A, B-hB7-H4 B16-F10 cells were able to establish tumors in vivo and can be used for efficacy studies.


Protein expression analysis of tumor cells


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B-hB7-H4 B16-F10 cells were subcutaneously transplanted into C57BL/6 mice (n=5), and on 18 days post inoculation, tumor cells were harvested and assessed for human B7-H4 expression by flow cytometry. As shown, human B7-H4 was highly expressed on the surface of tumor cells. Therefore, B-hB7-H4 B16-F10 cells can be used for in vivo efficacy studies of novel B7-H4 therapeutics.

Tumor growth curve & Body weight changes

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Subcutaneous homograft tumor growth of B-hB7-H4 B16-F10 cells. B-hB7-H4 B16-F10 cells and wild-type B16-F10 cells were subcutaneously implanted into B-h4-1BB mice (female, 6-week-old, n=6). Tumor volume and body weight were measured twice a week. (A) Average tumor volume. (B)  Body weight. Volume was expressed in mm3 using the formula: V=0.5 X long diameter X short diameter2. As shown in panel A, B-hB7-H4 B16-F10 cells were able to establish tumors in vivo and can be used for efficacy studies. Values are expressed as mean ± SEM.