Heidelberg Biotech Gmbh

Kashi Javaherian

Amir Abdollahi

Jürgen Debus

The present invention pertains to a method for producing a protein oligomer comprising at least two, and preferably three heterodimeric human NC-I-Fc proteins, the method comprising: a) culturing a host cell expressing (i) a fusion protein comprising, from N- to C-terminus, human NC-1 from collagen 18 fused to human IgGI Fc with 'knob' mutations, or human IgGI Fc with “knob” mutations fused to human NC-1 from collagen 18, and (ii) human IgGI Fc with “hole” mutations, under conditions which allow the formation of a protein oligomer comprising at least two, and preferably three heterodimeric human NC-1-Fc proteins, and wherein the fusion protein of (i) and the human IgGI Fc with “hole” mutations of (ii) are expressed in a ratio of 2:1 or higher, and b) obtaining the protein oligomer comprising at least two, and preferably three heterodimeric human NC-1-Fc proteins.

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Heidelberg, Germany

Kashi Javaherian