Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity
Abstract Engineered bacteria‐mediated antitumor approaches have been proposed as promising immunotherapies for cancer. However, the off‐target bacterial toxicity narrows the therapeutic window. Living microbes will benefit from their controllable immunogenicity within tumors for safer antitumor appl...
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| Format: | Article |
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Wiley
2024-09-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202404069 |
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| author | Leyang Wu Lin Li Liyuan Qiao Chenyang Li Shuhui Zhang Xingpeng Yin Zengzheng Du Ying Sun Jiahui Qiu Xiaoyao Chang Bohao Wang Zichun Hua |
| author_facet | Leyang Wu Lin Li Liyuan Qiao Chenyang Li Shuhui Zhang Xingpeng Yin Zengzheng Du Ying Sun Jiahui Qiu Xiaoyao Chang Bohao Wang Zichun Hua |
| author_sort | Leyang Wu |
| collection | DOAJ |
| description | Abstract Engineered bacteria‐mediated antitumor approaches have been proposed as promising immunotherapies for cancer. However, the off‐target bacterial toxicity narrows the therapeutic window. Living microbes will benefit from their controllable immunogenicity within tumors for safer antitumor applications. In this study, a genetically encoded microbial activation strategy is reported that uses tunable and dynamic expression of surface extracellular polysaccharides to improve bacterial biocompatibility while retaining therapeutic efficacy. Based on screening of genes associated with Salmonella survival in macrophages, a novel attenuated Salmonella chassis strain AIS (htrA gene‐deficient) highly enriched in tumors after administration and rapidly cleared from normal organs are reported. Subsequently, an engineered bacterial strain, AISI‐H, is constructed based on the AIS strain and an optimized quorum‐sensing regulatory system. The AISI‐H strain can achieve recovery of dynamic tumor‐specific bacterial virulence through a novel HTRA‐RCSA axis‐based and quorum‐sensing synthetic gene circuit‐mediated increase in extracellular polysaccharide content. These strains act “off” in normal organs to avoid unwanted immune activation and “on” in tumors for precise tumor suppression in mice. The AISI‐H strain shows significant tumor inhibition and potent activation of anticancer immunity in a melanoma mouse model. The AISI‐H strain exhibits excellent biocompatibility. This bacterial regulation strategy expands the applications of microbe‐based antitumor therapeutics. |
| format | Article |
| id | doaj-art-4a42b163a42e493f8e3a5541375d5bc1 |
| institution | OA Journals |
| issn | 2198-3844 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj-art-4a42b163a42e493f8e3a5541375d5bc12025-08-20T01:55:09ZengWileyAdvanced Science2198-38442024-09-011136n/an/a10.1002/advs.202404069Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor ImmunityLeyang Wu0Lin Li1Liyuan Qiao2Chenyang Li3Shuhui Zhang4Xingpeng Yin5Zengzheng Du6Ying Sun7Jiahui Qiu8Xiaoyao Chang9Bohao Wang10Zichun Hua11Department of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaDepartment of Neurology of Nanjing Drum Tower Hospital and The State Key Laboratory of Pharmaceutical Biotechnology School of Life Sciences and The Affiliated Hospital of Nanjing University Medical School Nanjing University Nanjing Jiangsu 21008 P. R. ChinaAbstract Engineered bacteria‐mediated antitumor approaches have been proposed as promising immunotherapies for cancer. However, the off‐target bacterial toxicity narrows the therapeutic window. Living microbes will benefit from their controllable immunogenicity within tumors for safer antitumor applications. In this study, a genetically encoded microbial activation strategy is reported that uses tunable and dynamic expression of surface extracellular polysaccharides to improve bacterial biocompatibility while retaining therapeutic efficacy. Based on screening of genes associated with Salmonella survival in macrophages, a novel attenuated Salmonella chassis strain AIS (htrA gene‐deficient) highly enriched in tumors after administration and rapidly cleared from normal organs are reported. Subsequently, an engineered bacterial strain, AISI‐H, is constructed based on the AIS strain and an optimized quorum‐sensing regulatory system. The AISI‐H strain can achieve recovery of dynamic tumor‐specific bacterial virulence through a novel HTRA‐RCSA axis‐based and quorum‐sensing synthetic gene circuit‐mediated increase in extracellular polysaccharide content. These strains act “off” in normal organs to avoid unwanted immune activation and “on” in tumors for precise tumor suppression in mice. The AISI‐H strain shows significant tumor inhibition and potent activation of anticancer immunity in a melanoma mouse model. The AISI‐H strain exhibits excellent biocompatibility. This bacterial regulation strategy expands the applications of microbe‐based antitumor therapeutics.https://doi.org/10.1002/advs.202404069attenuated salmonellamicrobial therapeuticsquorum‐sensingsynthetic biologytumor bio‐immunotherapy |
| spellingShingle | Leyang Wu Lin Li Liyuan Qiao Chenyang Li Shuhui Zhang Xingpeng Yin Zengzheng Du Ying Sun Jiahui Qiu Xiaoyao Chang Bohao Wang Zichun Hua Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity Advanced Science attenuated salmonella microbial therapeutics quorum‐sensing synthetic biology tumor bio‐immunotherapy |
| title | Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity |
| title_full | Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity |
| title_fullStr | Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity |
| title_full_unstemmed | Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity |
| title_short | Programmable Bacteria with Dynamic Virulence Modulation System for Precision Antitumor Immunity |
| title_sort | programmable bacteria with dynamic virulence modulation system for precision antitumor immunity |
| topic | attenuated salmonella microbial therapeutics quorum‐sensing synthetic biology tumor bio‐immunotherapy |
| url | https://doi.org/10.1002/advs.202404069 |
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