PMID: 9166476Oct 1, 1995Paper

High CD44 expression on human mesotheliomas mediates association with hyaluronan

The Cancer Journal From Scientific American
M B PennoH I Pass

Abstract

Malignant pleural mesothelioma is a rare malignancy with major environmental implications regarding passive asbestos exposure. We have conducted an immunohistochemical and functional study to address three questions: (1) What is the representation of CD44 on tumor cells as detected by immunohistochemistry? (2) Do cultured cell lines derived from malignant pleural mesothelioma tissue express the same CD44 phenotypes as the original tumors, and can they serve as a model for the study of CD44 in mesotheliomas? (3) What is the functional status of the CD44 expressed on mesotheliomas, with regard to hyaluronan anchorage? Thirty-seven samples of pleural mesothelioma were obtained from patients entered on phase I/II protocols conducted in the Surgery Branch of the National Cancer Institute since 1991. The diagnosis was confirmed in all 37 patients by means of a battery of immunohistochemical tests for markers differentiating malignant pleural mesothelioma from adenocarcinoma. Tumor-positive lymph nodes and distant metastases were also examined in six of the patients. Cell lines, established from tumor tissue of six of the patients described above, were used in these experiments. Four (H2596, H2461, H2373, H2452) were derived from prim...Continue Reading

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