Target-specific peptides for BK virus agnoprotein identified through phage display screening: advancing antiviral therapeutics
Abstract BK virus is implicated in polyomavirus-associated nephropathy (PVAN) and hemorrhagic cystitis, particularly in kidney transplant recipients, affecting the functionality of the transplanted kidney and posing a risk of graft loss. Despite these challenges, specific antiviral drugs targeting B...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-86439-4 |
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| author | Xiaofei Xing Jingxian Han Keke Wang Fuyun Tian CuiXia Jiang Wei Liang Lin Qi Xin Yue Yinhang Wen Yuwei Hu Hui Qiao |
| author_facet | Xiaofei Xing Jingxian Han Keke Wang Fuyun Tian CuiXia Jiang Wei Liang Lin Qi Xin Yue Yinhang Wen Yuwei Hu Hui Qiao |
| author_sort | Xiaofei Xing |
| collection | DOAJ |
| description | Abstract BK virus is implicated in polyomavirus-associated nephropathy (PVAN) and hemorrhagic cystitis, particularly in kidney transplant recipients, affecting the functionality of the transplanted kidney and posing a risk of graft loss. Despite these challenges, specific antiviral drugs targeting BK virus remain elusive. Agnoprotein, a small, positively charged protein encoded by the BK virus late gene, functions in the assembly, maturation, and release of the virus. Consequently, agnoprotein emerges as a promising target for potential anti-BK virus drugs. Utilizing phage display technology, we conducted screening to identify specific binding peptides against the agnoprotein. The primary objective of screening binding peptides is to utilize them to disrupt the virus’s life cycle, impeding its replication and transmission, thereby achieving antiviral effects. In the current experimental study, a combination of phage 7 peptide libraries and 12 peptide libraries was employed for screening purposes. Following four rounds of screening, seven positive phages demonstrating the ability to bind Agnoprotein were successfully isolated. Following ELISA validation, it was observed that the optical density (OD) values for Agnoprotein binding of the seven positive clones significantly exceeded three times the value of the negative control (NC). Subsequent analysis identified one 7-peptide and six 12-peptides within the binding peptides. Moreover, OD values of dodecapeptide phage clones bound to agnoprotein were generally higher than those of heptapeptide phage clones.In conclusion, our study demonstrates the successful identification of specific binding peptides against agnoprotein, a crucial component in the BK virus life cycle. |
| format | Article |
| id | doaj-art-e7113f3c55f2434b8a4badbc70c23119 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-e7113f3c55f2434b8a4badbc70c231192025-01-26T12:24:26ZengNature PortfolioScientific Reports2045-23222025-01-0115111110.1038/s41598-025-86439-4Target-specific peptides for BK virus agnoprotein identified through phage display screening: advancing antiviral therapeuticsXiaofei Xing0Jingxian Han1Keke Wang2Fuyun Tian3CuiXia Jiang4Wei Liang5Lin Qi6Xin Yue7Yinhang Wen8Yuwei Hu9Hui Qiao10Department of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalHenan Key Laboratory of Cardiac Remodeling and Transplantation, Zhengzhou NO.7 People’s HospitalHenan Key Laboratory of Cardiac Remodeling and Transplantation, Zhengzhou NO.7 People’s HospitalDepartment of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalDepartment of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalDepartment of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalDepartment of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalDepartment of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalDepartment of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalDepartment of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalDepartment of Clinical Laboratory, Zhengzhou No. 7 People’s HospitalAbstract BK virus is implicated in polyomavirus-associated nephropathy (PVAN) and hemorrhagic cystitis, particularly in kidney transplant recipients, affecting the functionality of the transplanted kidney and posing a risk of graft loss. Despite these challenges, specific antiviral drugs targeting BK virus remain elusive. Agnoprotein, a small, positively charged protein encoded by the BK virus late gene, functions in the assembly, maturation, and release of the virus. Consequently, agnoprotein emerges as a promising target for potential anti-BK virus drugs. Utilizing phage display technology, we conducted screening to identify specific binding peptides against the agnoprotein. The primary objective of screening binding peptides is to utilize them to disrupt the virus’s life cycle, impeding its replication and transmission, thereby achieving antiviral effects. In the current experimental study, a combination of phage 7 peptide libraries and 12 peptide libraries was employed for screening purposes. Following four rounds of screening, seven positive phages demonstrating the ability to bind Agnoprotein were successfully isolated. Following ELISA validation, it was observed that the optical density (OD) values for Agnoprotein binding of the seven positive clones significantly exceeded three times the value of the negative control (NC). Subsequent analysis identified one 7-peptide and six 12-peptides within the binding peptides. Moreover, OD values of dodecapeptide phage clones bound to agnoprotein were generally higher than those of heptapeptide phage clones.In conclusion, our study demonstrates the successful identification of specific binding peptides against agnoprotein, a crucial component in the BK virus life cycle.https://doi.org/10.1038/s41598-025-86439-4BK virusKidney transplantAgnoproteinPhage display technologyPeptide drugs |
| spellingShingle | Xiaofei Xing Jingxian Han Keke Wang Fuyun Tian CuiXia Jiang Wei Liang Lin Qi Xin Yue Yinhang Wen Yuwei Hu Hui Qiao Target-specific peptides for BK virus agnoprotein identified through phage display screening: advancing antiviral therapeutics Scientific Reports BK virus Kidney transplant Agnoprotein Phage display technology Peptide drugs |
| title | Target-specific peptides for BK virus agnoprotein identified through phage display screening: advancing antiviral therapeutics |
| title_full | Target-specific peptides for BK virus agnoprotein identified through phage display screening: advancing antiviral therapeutics |
| title_fullStr | Target-specific peptides for BK virus agnoprotein identified through phage display screening: advancing antiviral therapeutics |
| title_full_unstemmed | Target-specific peptides for BK virus agnoprotein identified through phage display screening: advancing antiviral therapeutics |
| title_short | Target-specific peptides for BK virus agnoprotein identified through phage display screening: advancing antiviral therapeutics |
| title_sort | target specific peptides for bk virus agnoprotein identified through phage display screening advancing antiviral therapeutics |
| topic | BK virus Kidney transplant Agnoprotein Phage display technology Peptide drugs |
| url | https://doi.org/10.1038/s41598-025-86439-4 |
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