Epitope Mapping of Polyclonal Antibodies by Hydrogen–Deuterium Exchange Mass Spectrometry (HDX-MS)
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Epitope Mapping of Polyclonal Antibodies by Hydrogen–Deuterium Exchange Mass Spectrometry (HDX-MS). / Ständer, Susanne; Grauslund, Laura R.; Scarselli, Maria; Norais, Nathalie; Rand, Kasper.
In: Analytical Chemistry, Vol. 93, No. 34, 2021, p. 11669–11678.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - Epitope Mapping of Polyclonal Antibodies by Hydrogen–Deuterium Exchange Mass Spectrometry (HDX-MS)
AU - Ständer, Susanne
AU - Grauslund, Laura R.
AU - Scarselli, Maria
AU - Norais, Nathalie
AU - Rand, Kasper
PY - 2021
Y1 - 2021
N2 - Epitope mapping of antibodies (Abs) is crucial for understanding adaptive immunity, as well as studying the mode of action of therapeutic antibodies and vaccines. Especially insights into the binding of the entire polyclonal antibody population (pAb) raised upon vaccination would be of unique value to vaccine development. However, very few methods for epitope mapping can tolerate the complexity of a pAb sample. Here we show how hydrogen–deuterium exchange mass spectrometry (HDX-MS) can be used to map epitopes recognized by pAb samples. Our approach involves measuring the HDX of the antigen in absence or presence of varied amounts of pAbs, as well as dissociating additives. We apply the HDX-MS workflow to pAbs isolated from rabbit immunized with factor H-binding protein (fHbp), a Neisseria meningitidis vaccine antigen. We identify four immunogenic regions located on the N- and C-terminal region of fHbp and provide insights into the relative abundance and avidity of epitope binding Abs present in the sample. Overall, our results show that HDX-MS can provide a unique and relatively fast method for revealing the binding impact of the entire set of pAbs present in blood samples after vaccination. Such information provides a rare view into effective immunity and can guide the design of improved vaccines against viruses or bacteria.
AB - Epitope mapping of antibodies (Abs) is crucial for understanding adaptive immunity, as well as studying the mode of action of therapeutic antibodies and vaccines. Especially insights into the binding of the entire polyclonal antibody population (pAb) raised upon vaccination would be of unique value to vaccine development. However, very few methods for epitope mapping can tolerate the complexity of a pAb sample. Here we show how hydrogen–deuterium exchange mass spectrometry (HDX-MS) can be used to map epitopes recognized by pAb samples. Our approach involves measuring the HDX of the antigen in absence or presence of varied amounts of pAbs, as well as dissociating additives. We apply the HDX-MS workflow to pAbs isolated from rabbit immunized with factor H-binding protein (fHbp), a Neisseria meningitidis vaccine antigen. We identify four immunogenic regions located on the N- and C-terminal region of fHbp and provide insights into the relative abundance and avidity of epitope binding Abs present in the sample. Overall, our results show that HDX-MS can provide a unique and relatively fast method for revealing the binding impact of the entire set of pAbs present in blood samples after vaccination. Such information provides a rare view into effective immunity and can guide the design of improved vaccines against viruses or bacteria.
U2 - 10.1021/acs.analchem.1c00696
DO - 10.1021/acs.analchem.1c00696
M3 - Journal article
C2 - 34308633
VL - 93
SP - 11669
EP - 11678
JO - Analytical Chemistry
JF - Analytical Chemistry
SN - 0974-7419
IS - 34
ER -
ID: 275938666