8C9

Human malignant fibrous histiocytoma

Study of endothelial cells, CD36 expression analysis

Mouse x Mouse hybridoma

The hybridoma line 8C9 was produced by immunizing a female BALB/c mouse i.p. with tissue from a human malignant fibrous histiocytoma once a week for 6 weeks. Mouse spleen cells were fused with myeloma NS-1 cells using PEG and HAT for selection . The 8C9 monoclonal antibody detects a unique epitope on the leukocyte differentiation antigen CD36 (platelet glycoprotein IV or III6) expressed by normal and neoplastic endothelial cells. Immunoreactivity with 8C9 was detected on capillary endothelial cells, adipocytes, monocytes, platelets and the human monocytoid cell line U-937 (Sigma Catalogue number. 85011440). The antibody did not react with erythroid cells, T cells, B cells or HUVECs (human umbilical vein endothelial cells). Immunoblot analysis showed that 8C9 bound to a 97-kDa membrane protein expressed by U-937 cells treated with phorbol ester. Comparative immunohistochemical studies using 8C9 and the monoclonal antibody OKM demonstrated epitopic heterogeneity of the CD36 antigen by normal and neoplastic endothelial cells.

Maintain cultures between 3-9 x 100,000 cells/ml; 5% CO₂; 37°C

RPMI 1640 + 2mM glutamine + 10% FBS

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This cell line is part of the European Collection of Authenticated Cell Cultures (ECACC), an international repository managed by the United Kingdom Health Security Agency (UKHSA). Genomic DNA is not available for this cell line. Use of this product by commercial organizations may require a license agreement. Commercial organizations will be contacted by cellscreening@merckgroup.com to provide further information after the order request is submitted. Any other use of this cell line is prohibited without the express written permission of UKHSA. Inquiries regarding any other authorized use of this cell line may be directed to culturecollections@ukhsa.gov.uk.