Example 7
A synthetic gene coding for the chimeric immunogen hSortilin-FC, (human Sortilin AA (78-756) from SEQ ID NO:169) and human IgG1-FC AA (104-330) from SEQ ID NO:169 was cloned into pcDNA3.1 and used for expression using the freestyle system from Invitrogen. The antigen was purified from cell culture supernatants by protein-A affinity chromatography using standard procedures for antibody purification as described above for human antibodies.
Hybridoma Generation
hSortilin-FC was used as immunogen and 5 BALB/c mice were immunized. A mouse with satisfactory immune response was selected for cell fusion and hybridoma generation. Hybridoma supernatants were screened by ELISA using hSortilin-ECD as coating antigen. A total of eighteen hybridoma cell lines derived from nine parental clones were generated.
Expression
Hybridomas were initially grown in complete growth medium, DMEM with 10% FBS+ antibiotics, and subsequently adapted to CDhybridoma media (Invitrogen) for expression experiments.
Purification
Mouse monoclonal antibodies were purified from hybridoma cell culture supernatants by protein-G sepharose according to standard procedures recommended by the supplier (GE healthcare).