B-hCEACAM1 MC38_Biocytogen Pharmaceuticals (Beijing) Co., Ltd._Biocytogen, drug development, antibody discovery

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B-hCEACAM1 MC38

Common name	B-hCEACAM1 MC38	Catalog number	310690
Aliases	BGP, BGP1	Disease	Colon carcinoma
Organism	Mouse	Strain	C57BL/6
Tissue types	Colon	Tissue	Colon

Description

The mouse Ceacam1 gene was replaced by human CEACAM1 coding sequence in B-hCEACAM1 MC38 cells. Human CEACAM1 is highly expressed on the surface of B-hCEACAM1 MC38 cells.

Application

B-hCEACAM1 MC38 cells have the capability to establish tumors in vivo and can be used for efficacy studies.

Targeting strategy

Gene targeting strategy for B-hCEACAM1 MC38 cells. The exogenous promoter and human CEACAM1 coding sequence was inserted to replace part of murine exon 2. The insertion disrupts the endogenous murine Ceacam1 gene, resulting in a non-functional transcript.

Protein expression analysis

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CEACAM1 expression analysis in B-hCEACAM1 MC38 cells by flow cytometry. Single cell suspensions from wild-type MC38 and B-hCEACAM1 MC38 cultures were stained with species-specific anti-CEACAM1 antibody. Mouse CEACAM1 was detectable in wild-type MC38 cells. Human CEACAM1 was detected on the surface of B-hCEACAM1 MC38 cells but not wild-type MC38 cells. The D1 clone of B-hCEACAM1 MC38 cells was used for in vivo experiments.

Tumor growth curve & Body weight changes

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Subcutaneous homograft tumor growth of B-hCEACAM1 MC38 cells. B-hCEACAM1 MC38 cells (5x10⁵) were subcutaneously implanted into C57BL/6 mice (female, 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-hCEACAM1 MC38 cells were able to establish tumors in vivo and can be used for efficacy studies.