Abstract:
:An N-terminal peptide of the HIV-1 fusion peptide (FP) with eight amino acid residues (FP8) was conjugated to a recombinant Tetanus Toxoid Heavy Chain Fragment C (rTTHc) as a carrier protein to help boosting immunogenicity against HIV-1. In this rapid communication, a unique algorithm to determine FP-rTTHc conjugation ratio was developed based off the amino acid analysis. Five well recovered amino acids (present in both FP and rTTHc) were used to calculate the conjugation ratio, while proline (present only in rTTHc) was identified and utilized as the intrinsic internal standard for normalization. With this calculation, the assay variability was minimized (<20%), especially for conjugates with moderate to low conjugation ratios as being compared to previously reported methods. The approach offers a reliable tool to determine the efficiency of the conjugation reactions for in-process monitoring and for final conjugate product characterization.
journal_name
Vaccinejournal_title
Vaccineauthors
Yang GJ,Yang Y,Shaddeau A,Cai CX,Li Y,Gulla K,Zhang Y,Ou L,Cooper JW,Lei QPdoi
10.1016/j.vaccine.2020.04.080subject
Has Abstractpub_date
2020-06-15 00:00:00pages
4507-4511issue
29eissn
0264-410Xissn
1873-2518pii
S0264-410X(20)30642-3journal_volume
38pub_type
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