Preparations of conjugates of a receptor-binding internalized ligand and a cytocide-encoding agent and compositions containing such preparations are provided. The conjugates contain a polypeptide that is reactive with an FGF receptor, such as bFGF, or another heparin-binding growth factor, cytokine, or growth factor coupled to a nucleic acid binding domain. One or more linkers may be used in the conjugation. The linker is selected to increase the specificity, toxicity, solubility, serum stability, or intracellular availability, and promote nucleic acid condensation of the targeted moiety. The conjugates are complexed with a cytocide-encoding agent, such as DNA encoding saporin. Conjugates of a receptor-binding internalized ligand to a nucleic acid molecule are also provided.

As preparações dos conjugates de receptor-ligar internalized o ligand e um agente cytocide-codificando e as composições que contêm tais preparações são fornecidos. Os conjugates contêm um polypeptide que seja reactive com um receptor de FGF, tal como o bFGF, ou outro fator do crescimento, cytokine, ou fator heparin-ligando do crescimento acoplado a um domínio obrigatório do ácido nucleic. Um ou o mais linkers pode ser usado no conjugation. O linker é selecionado para aumentar o specificity, o toxicity, o solubility, a estabilidade do serum, ou a disponibilidade intracellular, e promove a condensação do ácido nucleic do moiety alvejado. Os conjugates são complexed com um agente cytocide-codificando, tal como o saporin codificando do DNA. Os conjugates de um ligand internalized receptor-ligando a uma molécula do ácido nucleic são fornecidos também.

 
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