TY - JOUR
T1 - Production and characterization of novel Anti-HIV Fc-fusion proteins in plant-based systems: Nicotiana benthamiana & tobacco BY-2 cell suspension
AU - Gutierrez-Valdes, Noemi
AU - Cunyat, Francesc
AU - Balieu, Juliette
AU - Walet-Balieu, Marie-Laure
AU - Paul, Matthew j.
AU - De groot, Jonas
AU - Blanco-Perera, Amaya
AU - Carrillo, Jorge
AU - Lerouge, Patrice
AU - Seters, Mariëlle Jansma-Van
AU - Joensuu, Jussi j.
AU - Bardor, Muriel
AU - Ma, Julian
AU - Blanco, Julià
AU - Ritala, Anneli
PY - 2024/11/25
Y1 - 2024/11/25
N2 - Multifunctional anti-HIV Fc-fusion proteins aim to tackle HIV efficiently through multiple modes of action. Although results have been promising, these recombinant proteins are hard to produce. This study explored the production and characterization of anti-HIV Fc-fusion proteins in plant-based systems, specifically Nicotiana benthamiana plants and tobacco BY-2 cell suspension. Fc-fusion protein expression in plants was optimized by incorporating codon optimization, ER retention signals, and hydrophobin fusion elements. Successful transient protein expression was achieved in N. benthamiana, with notable improvements in expression levels achieved through N-terminal hydrophobin fusion and ER retention signals. Stable expression in tobacco BY-2 resulted in varying accumulation levels being at highest 2.2.mg/g DW. The inclusion of hydrophobin significantly enhanced accumulation, providing potential benefits for downstream processing. Mass spectrometry analysis confirmed the presence of the ER retention signal and of N-glycans. Functional characterization revealed strong binding to CD64 and CD16a receptors, the latter being important for antibody-dependent cellular cytotoxicity (ADCC). Interaction with HIV antigens indicated potential neutralization capabilities. In conclusion, this research highlights the potential of plant-based systems for producing functional anti-HIV Fc-fusion proteins, offering a promising avenue for the development of these novel HIV therapies.
AB - Multifunctional anti-HIV Fc-fusion proteins aim to tackle HIV efficiently through multiple modes of action. Although results have been promising, these recombinant proteins are hard to produce. This study explored the production and characterization of anti-HIV Fc-fusion proteins in plant-based systems, specifically Nicotiana benthamiana plants and tobacco BY-2 cell suspension. Fc-fusion protein expression in plants was optimized by incorporating codon optimization, ER retention signals, and hydrophobin fusion elements. Successful transient protein expression was achieved in N. benthamiana, with notable improvements in expression levels achieved through N-terminal hydrophobin fusion and ER retention signals. Stable expression in tobacco BY-2 resulted in varying accumulation levels being at highest 2.2.mg/g DW. The inclusion of hydrophobin significantly enhanced accumulation, providing potential benefits for downstream processing. Mass spectrometry analysis confirmed the presence of the ER retention signal and of N-glycans. Functional characterization revealed strong binding to CD64 and CD16a receptors, the latter being important for antibody-dependent cellular cytotoxicity (ADCC). Interaction with HIV antigens indicated potential neutralization capabilities. In conclusion, this research highlights the potential of plant-based systems for producing functional anti-HIV Fc-fusion proteins, offering a promising avenue for the development of these novel HIV therapies.
KW - BY-2 cell suspension
KW - HIV
KW - Hydrophobins
KW - KDEL ER retention signal
KW - Nicotiana benthamiana
KW - Plant molecular farming
KW - Plant-produced biologics glycosylation
UR - http://www.scopus.com/inward/record.url?scp=85201434482&partnerID=8YFLogxK
U2 - 10.1016/j.nbt.2024.08.499
DO - 10.1016/j.nbt.2024.08.499
M3 - Article
SN - 1871-6784
VL - 83
SP - 142
EP - 154
JO - New Biotechnology
JF - New Biotechnology
ER -