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Song W, He Y, Feng Y, Wang Y, Li X, Wu Y, Zhang S, Zhong L, Yan F, Sun L. Image-Guided Photothermal and Immune Therapy of Tumors via Melanin-Producing Genetically Engineered Bacteria. Small 2024:e2305764. [PMID: 38368252 DOI: 10.1002/smll.202305764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 01/10/2024] [Indexed: 02/19/2024]
Abstract
Photothermal therapy (PTT) is a new treatment modality for tumors. However, the efficient delivery of photothermal agents into tumors remains difficult, especially in hypoxic tumor regions. In this study, an approach to deliver melanin, a natural photothermal agent, into tumors using genetically engineered bacteria for image-guided photothermal and immune therapy is developed. An Escherichia coli MG1655 is transformed with a recombinant plasmid harboring a tyrosinase gene to produce melanin nanoparticles. Melanin-producing genetically engineered bacteria (MG1655-M) are systemically administered to 4T1 tumor-bearing mice. The tumor-targeting properties of MG1655-M in the hypoxic environment integrate the properties of hypoxia targeting, photoacoustic imaging, and photothermal therapeutic agents in an "all-in-one" manner. This eliminates the need for post-modification to achieve image-guided hypoxia-targeted cancer photothermal therapy. Tumor growth is significantly suppressed by irradiating the tumor with an 808 nm laser. Furthermore, strong antitumor immunity is triggered by PTT, thereby producing long-term immune memory effects that effectively inhibit tumor metastasis and recurrence. This work proposes a new photothermal and immune therapy guided by an "all-in-one" melanin-producing genetically engineered bacteria, which can offer broad potential applications in cancer treatment.
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Affiliation(s)
- Weijian Song
- Cancer Center, Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310030, P. R. China
- Bengbu Medical University, Bengbu, Anhui, 233030, P. R. China
| | - Yaling He
- Center for Cell and Gene Circuit Design, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Yanan Feng
- Department of Abdominal Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, 266000, P. R. China
| | - Yuanyuan Wang
- Center for Cell and Gene Circuit Design, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Xiaoying Li
- Cancer Center, Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310030, P. R. China
- Bengbu Medical University, Bengbu, Anhui, 233030, P. R. China
| | - Yingnan Wu
- Cancer Center, Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310030, P. R. China
- Bengbu Medical University, Bengbu, Anhui, 233030, P. R. China
| | - Shanxin Zhang
- Cancer Center, Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310030, P. R. China
- Bengbu Medical University, Bengbu, Anhui, 233030, P. R. China
| | - Lin Zhong
- School of Public Health, Nanchang University, Nanchang, Jiangxi, 330019, P. R. China
| | - Fei Yan
- Center for Cell and Gene Circuit Design, CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Litao Sun
- Cancer Center, Department of Ultrasound Medicine, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, 310030, P. R. China
- Bengbu Medical University, Bengbu, Anhui, 233030, P. R. China
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Tang Y, Wang C, Wang F, Li M, Fang Y, Ji Z, Zhao K. Development of Designer Transcription Activator-Like Effector-Based Plant Growth Regulator for Higher Yield in Rice. Front Plant Sci 2022; 13:924645. [PMID: 35774805 PMCID: PMC9237611 DOI: 10.3389/fpls.2022.924645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Recent studies have shown that reprogramming of gene expression in a genome can induce the production of proteins enabling yield increase. The transcription activator-like effectors (TALEs) from several species of bacterial Xanthomonas have been extensively studied, and a series of research tools, such as genome editing tool TALENs and gene expression activators, have been developed based on the specific protein-nucleic acid recognition and binding mechanisms of TALEs. In this proof-of-principle study, we designed and constructed a designer TALE (dTALE), designated as dTALE-NOG1, to specifically target the promoter of OsNOG1 gene in rice, and demonstrated that this dTALE can be used as a new type of plant growth regulator for better crop growth and harvest. In doing so, the dTALE-NOG1 was transferred into the non-pathogenic Xanthomonas oryzae pv. oryzae (Xoo) strain PH to generate a genetically engineered bacteria (GEB) strain called PH-dtNOG1. Functional verification showed that dTALE-NOG1 could significantly induce the expression of OsNOG1. By spraying cell suspension of PH-dtNOG1 on the rice plants during the tillering stage, the transcription level of OsNOG1 was highly enhanced, the grain number of rice plants was increased by more than 11.40%, and the grain yield per plant increased by more than 11.08%, demonstrating that the dTALE-NOG1 was highly effective in enhancing rice yield. This work provided a new strategy for manipulating agronomical traits by reprogramming gene expression in a crop genome.
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Affiliation(s)
- Yongchao Tang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Chunlian Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Fujun Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Man Li
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yanli Fang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhiyuan Ji
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Kaijun Zhao
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
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Wang L, Chen T, Wang H, Wu X, Cao Q, Wen K, Deng KY, Xin H. Engineered Bacteria of MG1363-pMG36e-GLP-1 Attenuated Obesity-Induced by High Fat Diet in Mice. Front Cell Infect Microbiol 2021; 11:595575. [PMID: 33732656 PMCID: PMC7959774 DOI: 10.3389/fcimb.2021.595575] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 01/19/2021] [Indexed: 12/12/2022] Open
Abstract
Background Although gut hormone glucagon-like peptide 1 (GLP-1) has been widely used for treating diabetes, the extremely short half-life greatly limits its application. The purpose of this study is to explore the effects of an engineered bacteria with expression of GLP-1 on obese mice induced by high fat diet (HFD). Methods The engineered strain of MG1363-pMG36e-GLP-1 (M-GLP-1) was constructed and its anti-obesity effects were evaluated in vivo. The bodyweight, the morphology of adipose and liver tissue, and liver function were examined. Quantitative RT-PCR and Western blot were used to measure the expressions of the genes involved in fatty acid oxidation synthesis. The intestinal microbial diversity was detected with high-throughput sequencing analysis. Results The engineered bacteria could produce GLP-1. It also significantly decreased the bodyweight and improved the glucose intolerance in the obese mice induced by HFD. Moreover, the strain also reduced the triglyceride (TG) in serum, protected liver, as well as decreased the intracellular TG in liver tissues of the obese mice. Furthermore, our results showed that the expressions of the genes including peroxisome proliferator-activated receptors α (PPARα) and its target genes were enhanced in liver tissues when mice treated with M-GLP-1. Finally, we found that the engineered strain markedly increased intestinal microbial diversity. Conclusion Our results suggested the genetically engineered bacteria that constitutively secreted GLP-1 could improve obesity and the mechanism may be related to promoting fatty acid oxidation and increasing intestinal microbial diversity of the obese mice.
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Affiliation(s)
- Lingfang Wang
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Tingtao Chen
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Huan Wang
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Xiaoli Wu
- College of Basic Medicine, JiangXi University of Traditional Chinese Medicine, Nanchang, China
| | - Qing Cao
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Ke Wen
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Ke-Yu Deng
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
| | - Hongbo Xin
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Nanchang University, Nanchang, China
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Rtimi S, Konstantinidis S, Britun N, Nadtochenko V, Khmel I, Kiwi J. New Evidence for Ag-Sputtered Materials Inactivating Bacteria by Surface Contact without the Release of Ag Ions: End of a Long Controversy? ACS Appl Mater Interfaces 2020; 12:4998-5007. [PMID: 31895531 DOI: 10.1021/acsami.9b15859] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The study provides new evidence for Ag-coated polyester (PES) mediating Escherichia coli inactivation by way of genetically engineered E. coli (without porins, from now denoted porinless bacteria). This allows the quantification of the bactericidal kinetics induced by the Ag surface without the intervention of Ag ions. Bacterial inactivation mediated by Ag-PES was seen to be completed within 60 min. The samples were prepared by high-power impulse magnetron sputtering (HiPIMS) at different sputter powers. In anaerobic media, this process required 120 min. The amounts of ions (Ar+, Ag+, and Ag2+) generated during the deposition by direct current magnetron sputtering (DCMS) and HiPIMS were determined by mass spectrometry. The thickness of the Ag films sputtered on PES by DCMS (0.28 A) during 100 s was found to be 340 nm. Thicknesses of 250, 230, and 200 nm were found when sputtering with HiPIMS was tuned at 8, 17, and 30 A, respectively. By scanning transmission electron microscopy (STEM-HAADF), the atomic distribution of Ag and oxygen was detected. By X-ray photoelectron spectroscopy (XPS), a shift in the Ag oxidation state was observed within the bacterial inactivation period. This reveals redox catalysis within the time required for the total bacterial inactivation due to the interaction between the bacterial suspension and Ag-PES. Surface properties of the Ag-coated PES samples were additionally investigated by X-ray diffraction (XRD). The formation of Ag plasmon was detected by diffuse reflectance spectroscopy (DRS) and was a function of the applied sputtering energy. The indoor sunlight irradiation dose required to induce an accelerated bacterial inactivation was found to be 5-10 mW/cm2.
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Affiliation(s)
- Sami Rtimi
- Ecole Polytechnique Fédérale de Lausanne, EPFL-STI-LTP , Station 12 , CH-1015 Lausanne , Switzerland
| | - Stephanos Konstantinidis
- Chimie des Interactions Plasma-Surface , Université de Mons , Place du Parc 23 , 7000 Mons , Belgium
| | - Nikolay Britun
- Chimie des Interactions Plasma-Surface , Université de Mons , Place du Parc 23 , 7000 Mons , Belgium
| | - Victor Nadtochenko
- N. Semenov Federal Research Center Chemical Physics , Russian Academy of Sciences , Kosygin Street 4 , Moscow 119991 , Russia
| | - Inessa Khmel
- Institute of Molecular Genetics , Russian Academy of Sciences , Kurchatov sq.2 , Moscow 123182 , Russia
| | - John Kiwi
- Ecole Polytechnique Fédérale de Lausanne EPFL-GPAO , Bat GC, Station 6 , CH-1015 Lausanne , Switzerland
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Liu X, Tang TC, Tham E, Yuk H, Lin S, Lu TK, Zhao X. Stretchable living materials and devices with hydrogel-elastomer hybrids hosting programmed cells. Proc Natl Acad Sci U S A 2017; 114:2200-5. [PMID: 28202725 DOI: 10.1073/pnas.1618307114] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Living systems, such as bacteria, yeasts, and mammalian cells, can be genetically programmed with synthetic circuits that execute sensing, computing, memory, and response functions. Integrating these functional living components into materials and devices will provide powerful tools for scientific research and enable new technological applications. However, it has been a grand challenge to maintain the viability, functionality, and safety of living components in freestanding materials and devices, which frequently undergo deformations during applications. Here, we report the design of a set of living materials and devices based on stretchable, robust, and biocompatible hydrogel-elastomer hybrids that host various types of genetically engineered bacterial cells. The hydrogel provides sustainable supplies of water and nutrients, and the elastomer is air-permeable, maintaining long-term viability and functionality of the encapsulated cells. Communication between different bacterial strains and with the environment is achieved via diffusion of molecules in the hydrogel. The high stretchability and robustness of the hydrogel-elastomer hybrids prevent leakage of cells from the living materials and devices, even under large deformations. We show functions and applications of stretchable living sensors that are responsive to multiple chemicals in a variety of form factors, including skin patches and gloves-based sensors. We further develop a quantitative model that couples transportation of signaling molecules and cellular response to aid the design of future living materials and devices.
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Martín R, Chain F, Miquel S, Natividad JM, Sokol H, Verdu EF, Langella P, Bermúdez-Humarán LG. Effects in the use of a genetically engineered strain of Lactococcus lactis delivering in situ IL-10 as a therapy to treat low-grade colon inflammation. Hum Vaccin Immunother 2014; 10:1611-21. [PMID: 24732667 DOI: 10.4161/hv.28549] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Irritable bowel syndrome (IBS) is a gastrointestinal disorder characterized by chronic abdominal pain, discomfort, and bloating. Interestingly, there is now evidence of the presence of a low-grade inflammatory status in many IBS patients, including histopathological and mucosal cytokine levels in the colon, as well as the presence of IBS-like symptoms in quiescent inflammatory bowel disease (IBD). The use of a genetically engineered food-grade bacterium, such as Lactococcus lactis, secreting the anti-inflammatory cytokine IL-10 has been proven by many pre-clinical studies to be a successful therapy to treat colon inflammation. In this study, we first reproduced the recovery-recurrence periods observed in IBS-patients in a new chronic model characterized by 2 episodes of DiNitro-BenzeneSulfonic-acid (DNBS)-challenge and we tested the effects of a recombinant strain of L. lactis secreting IL-10 under a Stress-Inducible Controlled Expression (SICE) system. In vivo gut permeability, colonic serotonin levels, cytokine profiles, and spleen cell populations were then measured as readouts of a low-grade inflammation. In addition, since there is increasing evidence that gut microbiota tightly regulates gut barrier function, tight junction proteins were also measured by qRT-PCR after administration of recombinant L. lactis in DNBS-treated mice. Strikingly, oral administration of L. lactis secreting active IL-10 in mice resulted in significant protective effects in terms of permeability, immune activation, and gut-function parameters. Although genetically engineered bacteria are, for now, used only as a "proof-of-concept," our study validates the interest in the use of the novel SICE system in L. lactis to express therapeutic molecules, such as IL-10, locally at mucosal surfaces.
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Affiliation(s)
- Rebeca Martín
- INRA; Commensal and Probiotics-Host Interactions Laboratory; UMR 1319 Micalis; Jouy-en-Josas, France; AgroParisTech; UMR1319 Micalis; Jouy-en-Josas, France
| | - Florian Chain
- INRA; Commensal and Probiotics-Host Interactions Laboratory; UMR 1319 Micalis; Jouy-en-Josas, France; AgroParisTech; UMR1319 Micalis; Jouy-en-Josas, France
| | - Sylvie Miquel
- INRA; Commensal and Probiotics-Host Interactions Laboratory; UMR 1319 Micalis; Jouy-en-Josas, France; AgroParisTech; UMR1319 Micalis; Jouy-en-Josas, France
| | - Jane M Natividad
- Farncombe Family Digestive Health Research Institute; McMaster University; Hamilton, ON Canada
| | - Harry Sokol
- INRA; Commensal and Probiotics-Host Interactions Laboratory; UMR 1319 Micalis; Jouy-en-Josas, France; AgroParisTech; UMR1319 Micalis; Jouy-en-Josas, France; Department of Gastroenterology and Nutrition; AP-HP; Hôpital Saint-Antoine F-75012 and UPMC Univ Paris; Paris, France; INSERM; Equipe AVENIR U1057 / UMR CNRS 7203; Paris, France
| | - Elena F Verdu
- Farncombe Family Digestive Health Research Institute; McMaster University; Hamilton, ON Canada
| | - Philippe Langella
- INRA; Commensal and Probiotics-Host Interactions Laboratory; UMR 1319 Micalis; Jouy-en-Josas, France; AgroParisTech; UMR1319 Micalis; Jouy-en-Josas, France
| | - Luis G Bermúdez-Humarán
- INRA; Commensal and Probiotics-Host Interactions Laboratory; UMR 1319 Micalis; Jouy-en-Josas, France; AgroParisTech; UMR1319 Micalis; Jouy-en-Josas, France
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