Altered glycosylations of cell surface glycoproteins often accompany malignant transformation and lectins are useful for probing these alterations. Lymphocytes exhibit characteristic surface glycoproteins which serve as markers of cell status and development. The present work was undertaken to
The spicamycin analogue KRN5500 (NSC 650426; SPA) is derived from Streptomyces alanosinicus. The unique structure contains a purine, an aminoheptose sugar, glycine, and a tetradecadiene fatty acid. SPA potently inhibits the growth of certain human tumor cell lines in vitro (IC50 for growth <100 nM)
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