Efficient secretory expression of human milk Osteopontin in Komagataella phaffii

Osteopontin (OPN), a bioactive milk protein in breast milk, has diverse applications in food and medicine. OPN is predominantly extracted from fresh bovine milk; however, the concentration of OPN in bovine milk is exceedingly low. To address these issues, in the present study, we used Komagataella p...

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Main Authors: Zhihang Zhang, Yangyang Li, Zhenmin Liu, Shixiu Cui, Xianhao Xu, Yanfeng Liu, Jianghua Li, Guocheng Du, Xueqin Lv, Long Liu
Format: Article
Language:English
Published: Elsevier 2024-12-01
Series:Future Foods
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Online Access:http://www.sciencedirect.com/science/article/pii/S2666833524000996
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author Zhihang Zhang
Yangyang Li
Zhenmin Liu
Shixiu Cui
Xianhao Xu
Yanfeng Liu
Jianghua Li
Guocheng Du
Xueqin Lv
Long Liu
author_facet Zhihang Zhang
Yangyang Li
Zhenmin Liu
Shixiu Cui
Xianhao Xu
Yanfeng Liu
Jianghua Li
Guocheng Du
Xueqin Lv
Long Liu
author_sort Zhihang Zhang
collection DOAJ
description Osteopontin (OPN), a bioactive milk protein in breast milk, has diverse applications in food and medicine. OPN is predominantly extracted from fresh bovine milk; however, the concentration of OPN in bovine milk is exceedingly low. To address these issues, in the present study, we used Komagataella phaffii for the recombinant expression of human OPN (hOPN). The results of host cell screening revealed that X33 cells were more suitable than other K. phaffii hosts for hOPN expression, yielding a titer of 340.5 μg/L. Subsequently, it was observed that the extracellular production of hOPN significantly increased to 8.02 mg/L from strain XPSA01 using the PAOX1 promoter and the hybrid signal peptide PROSCW10-α. Meanwhile, the co-expression of transcription factors, translation factors, and molecular chaperones resulted in a 2.94-fold enhancement in extracellular hOPN production compared with that in XPSA01, resulting in a titer of 23.6 mg/L. Finally, the above strategies were combined to obtain the recombinant strain XPSA01-CP, which achieved titers of 35.6 and 128.5 mg/L hOPN in shake-flask fermentation and 3-L bioreactor, respectively. To the best of our knowledge, this is the highest extracellular yield of hOPN ever reported.
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spelling doaj-art-d17ef2d75ec147b6a1dc82cd160e122d2025-08-20T02:48:57ZengElsevierFuture Foods2666-83352024-12-011010039310.1016/j.fufo.2024.100393Efficient secretory expression of human milk Osteopontin in Komagataella phaffiiZhihang Zhang0Yangyang Li1Zhenmin Liu2Shixiu Cui3Xianhao Xu4Yanfeng Liu5Jianghua Li6Guocheng Du7Xueqin Lv8Long Liu9Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China; Food Laboratory of Zhongyuan, Jiangnan University, Wuxi 214122, PR ChinaKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR ChinaState Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd, Shanghai 200436, PR ChinaScience Center for Future Foods, Jiangnan University, Wuxi 214122, PR China; Jiaxing Institute of Future Food, Jiaxing 314015, PR ChinaKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR ChinaKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR ChinaKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China; Corresponding author.Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR ChinaKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR ChinaKey Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, PR China; Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR ChinaOsteopontin (OPN), a bioactive milk protein in breast milk, has diverse applications in food and medicine. OPN is predominantly extracted from fresh bovine milk; however, the concentration of OPN in bovine milk is exceedingly low. To address these issues, in the present study, we used Komagataella phaffii for the recombinant expression of human OPN (hOPN). The results of host cell screening revealed that X33 cells were more suitable than other K. phaffii hosts for hOPN expression, yielding a titer of 340.5 μg/L. Subsequently, it was observed that the extracellular production of hOPN significantly increased to 8.02 mg/L from strain XPSA01 using the PAOX1 promoter and the hybrid signal peptide PROSCW10-α. Meanwhile, the co-expression of transcription factors, translation factors, and molecular chaperones resulted in a 2.94-fold enhancement in extracellular hOPN production compared with that in XPSA01, resulting in a titer of 23.6 mg/L. Finally, the above strategies were combined to obtain the recombinant strain XPSA01-CP, which achieved titers of 35.6 and 128.5 mg/L hOPN in shake-flask fermentation and 3-L bioreactor, respectively. To the best of our knowledge, this is the highest extracellular yield of hOPN ever reported.http://www.sciencedirect.com/science/article/pii/S2666833524000996Komagataella phaffiiOsteopontinHybrid signal peptideMolecular chaperoneSecretory expression
spellingShingle Zhihang Zhang
Yangyang Li
Zhenmin Liu
Shixiu Cui
Xianhao Xu
Yanfeng Liu
Jianghua Li
Guocheng Du
Xueqin Lv
Long Liu
Efficient secretory expression of human milk Osteopontin in Komagataella phaffii
Future Foods
Komagataella phaffii
Osteopontin
Hybrid signal peptide
Molecular chaperone
Secretory expression
title Efficient secretory expression of human milk Osteopontin in Komagataella phaffii
title_full Efficient secretory expression of human milk Osteopontin in Komagataella phaffii
title_fullStr Efficient secretory expression of human milk Osteopontin in Komagataella phaffii
title_full_unstemmed Efficient secretory expression of human milk Osteopontin in Komagataella phaffii
title_short Efficient secretory expression of human milk Osteopontin in Komagataella phaffii
title_sort efficient secretory expression of human milk osteopontin in komagataella phaffii
topic Komagataella phaffii
Osteopontin
Hybrid signal peptide
Molecular chaperone
Secretory expression
url http://www.sciencedirect.com/science/article/pii/S2666833524000996
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