Compositions and methods for modifying toxic effects of...

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues

Reexamination Certificate

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C530S300000, C530S391700, C530S370000, C530S396000, C530S403000, C514S002600, C514S012200, C435S069100, C435S252300, C435S320100, C424S183100, C536S023100

Reexamination Certificate

active

07829668

ABSTRACT:
The present invention provides methods to produce immunotoxins (ITs) and cytokines with a reduced ability to promote vascular leak syndrome (VLS). The invention also provides ITs and cytokines which have been mutated to lack amino acid sequences which induce VLS. Also disclosed are methods for producing peptides that inhibit the induction of VLS by ITs and cytokines. Also disclosed are peptides comprising the (x)D(y) sequence to promote the extravasation of other molecules. Toxins mutated in the (x)D(y) motif or active site residues are disclosed for used in vaccines.

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