Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Blood proteins or globulins – e.g. – proteoglycans – platelet...
Patent
1990-08-07
1992-01-28
Russel, Jeffrey E.
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Blood proteins or globulins, e.g., proteoglycans, platelet...
530391, 424 8591, C07K 1702, A61K 3944
Patent
active
050845608
ABSTRACT:
Novel pH-sensitive immunoconjugates which dissociate in low-pH tumor tissue, comprising a chemotherapeutic agent and an antibody reactive with a tumor-associated antigen are described. The chemotherapeutic agent is coupled to the antibody by a link which is unstable in low pH. The link may comprise a spacer consisting of a polyamino acid. Representative antibodies for use in these immunoconjugates include monoclonal antibodies which are not internalized by tumor cells.
REFERENCES:
patent: 4631190 (1986-12-01), Shen et al.
Blair et al (1983) J. Immunol. Methods 59: 129-143.
Gallego et al. (1984) Int. J. Cancer 33:737-744.
Jung et al. (1981) Biochem. Biophys. Res. Commun. 101(2):599-606.
Hellestrom Ingegerd E.
Hellstrom Karl E.
Lavie Efraim
Kim Kay
Mandel SaraLynn
Oncogen
Russel Jeffrey E.
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