Development and Identification of Monoclonal Antibodies Against meso -Tetra ( α,α,α,α,-O-phenylacetamide benzene) Porphyrin

Abstract

The small molecule meso-Tetra (α,α,α,α-o-phenylacetamide benzene) porphyrin was synthesized through the condensation of o-nitrobenzaldehyde and pyrrole followed by reduction of the meso-tetra (o-nitrophenyl) porphyrin. The small molecule, without carrier, was used as complete antigen to immunize BALB/ C mice. Spleen cells producing high titer antibody were removed and fused with myeloma cells of SP2/0 origin. Using a conventional immunization protocol, stable murine monoclonal antibodies (MAbs) producing cell lines to meso-Tetra (α,α,α,α-o-phenylacetamide benzene) porphyrin 1F2 were obtained. Subclass determination showed that the clones produce IgG2a types of MAbs. The analytical results of HPLC and MALDI/TOFMS suggest that the purity of MAb 1F2 is 100%, and MAb 1F2 has a relative molecular weight of 156678.8 Da. Our results demonstrated that small molecule meso-Tetra (α,α,α,α-o-phenylacetamide benzene) porphyrin, as semiantigen without carrier, can elicit the formation of MAbs.