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Shi Q, Yin T, Zeng C, Pan H, Chen Z, Wang L, Wang B, Zheng M, Cai L. Cryomicroneedle delivery of nanogold-engineered Rhodospirillum rubrum for photochemical transformation and tumor optical biotherapy. Bioact Mater 2024; 37:505-516. [PMID: 38698917 PMCID: PMC11063949 DOI: 10.1016/j.bioactmat.2024.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 05/05/2024] Open
Abstract
Tumor metabolite regulation is intricately linked to cancer progression. Because lactate is a characteristic metabolite of the tumor microenvironment (TME), it supports tumor progression and drives immunosuppression. In this study, we presented a strategy for antitumor therapy by developing a nanogold-engineered Rhodospirillum rubrum (R.r-Au) that consumed lactate and produced hydrogen for optical biotherapy. We leveraged a cryogenic micromolding approach to construct a transdermal therapeutic cryomicroneedles (CryoMNs) patch integrated with R.r-Au to efficiently deliver living bacterial drugs. Our long-term storage studies revealed that the viability of R.r-Au in CryoMNs remained above 90%. We found that the CryoMNs patch was mechanically strong and could be inserted into mouse skin. In addition, it rapidly dissolved after administering bacterial drugs and did not produce by-products. Under laser irradiation, R.r-Au effectively enhanced electron transfer through Au NPs actuation into the photosynthetic system of R. rubrum and enlarged lactate consumption and hydrogen production, thus leading to an improved tumor immune activation. Our study demonstrated the potential of CryoMNs-R.r-Au patch as a minimally invasive in situ delivery approach for living bacterial drugs. This research opens up new avenues for nanoengineering bacteria to transform tumor metabolites into effective substances for tumor optical biotherapy.
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Affiliation(s)
- Qingxia Shi
- Guangdong Key Laboratory of Nanomedicine, CAS-HK Joint Lab of Biomaterials, Shenzhen Engineering Laboratory of Nanomedicine and Nanoformulations, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences, Shenzhen, 518055, China
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Key Laboratory for Nanomedicine, Guangdong Medical University, Dongguan, 523808, China
| | - Ting Yin
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Key Laboratory for Nanomedicine, Guangdong Medical University, Dongguan, 523808, China
| | - Cuiping Zeng
- CAS Key Laboratory of Quantitative Engineering Biology Shenzhen Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Hong Pan
- Guangdong Key Laboratory of Nanomedicine, CAS-HK Joint Lab of Biomaterials, Shenzhen Engineering Laboratory of Nanomedicine and Nanoformulations, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Ze Chen
- Guangdong Key Laboratory of Nanomedicine, CAS-HK Joint Lab of Biomaterials, Shenzhen Engineering Laboratory of Nanomedicine and Nanoformulations, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Lin Wang
- CAS Key Laboratory of Quantitative Engineering Biology Shenzhen Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Bo Wang
- CAS Key Laboratory of Quantitative Engineering Biology Shenzhen Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Mingbin Zheng
- Guangdong Key Laboratory of Nanomedicine, CAS-HK Joint Lab of Biomaterials, Shenzhen Engineering Laboratory of Nanomedicine and Nanoformulations, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences, Shenzhen, 518055, China
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Key Laboratory for Nanomedicine, Guangdong Medical University, Dongguan, 523808, China
- National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, The Second Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518112, China
| | - Lintao Cai
- Guangdong Key Laboratory of Nanomedicine, CAS-HK Joint Lab of Biomaterials, Shenzhen Engineering Laboratory of Nanomedicine and Nanoformulations, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences, Shenzhen, 518055, China
- Sino-Euro Center of Biomedicine and Health, Shenzhen, 518024, China
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Hydrogen overproducing nitrogenases obtained by random mutagenesis and high-throughput screening. Sci Rep 2016; 6:38291. [PMID: 27910898 PMCID: PMC5133592 DOI: 10.1038/srep38291] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 11/07/2016] [Indexed: 02/05/2023] Open
Abstract
When produced biologically, especially by photosynthetic organisms, hydrogen gas (H2) is arguably the cleanest fuel available. An important limitation to the discovery or synthesis of better H2-producing enzymes is the absence of methods for the high-throughput screening of H2 production in biological systems. Here, we re-engineered the natural H2 sensing system of Rhodobacter capsulatus to direct the emission of LacZ-dependent fluorescence in response to nitrogenase-produced H2. A lacZ gene was placed under the control of the hupA H2-inducible promoter in a strain lacking the uptake hydrogenase and the nifH nitrogenase gene. This system was then used in combination with fluorescence-activated cell sorting flow cytometry to screen large libraries of nitrogenase Fe protein variants generated by random mutagenesis. Exact correlation between fluorescence emission and H2 production levels was found for all automatically selected strains. One of the selected H2-overproducing Fe protein variants lacked 40% of the wild-type amino acid sequence, a surprising finding for a protein that is highly conserved in nature. We propose that this method has great potential to improve microbial H2 production by allowing powerful approaches such as the directed evolution of nitrogenases and hydrogenases.
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Cai J, Wang G. Screening and hydrogen-producing characters of a highly efficient H₂-producing mutant of Rhodovulum sulfidophilum P5. BIORESOURCE TECHNOLOGY 2013; 142:18-25. [PMID: 23732918 DOI: 10.1016/j.biortech.2013.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 05/01/2013] [Accepted: 05/04/2013] [Indexed: 06/02/2023]
Abstract
In this study, transposon mutagenesis technology was utilized to enhance the hydrogen production capability of a wild marine photosynthetic bacterium Rhodovulum sulfidophilum P5. A mutant strain TH-253 that exhibited high hydrogen yield and weaker light absorption ability was screened. Under strong light conditions, the mutant produced more hydrogen than that of the WT. Under optimum light intensity (120 μmol photons/m(2)s), the mutant achieved its highest hydrogen yield (1,436 ± 44 mL H2/L, about 3.21 ± 0.10 mol H2/mol acetate), which was 40.37% higher that of the WT. In continuous operation mode, the hydrogen yield (3.59 ± 0.11 mol H2/mol acetate) and average hydrogen production rate (16.91 ± 0.46 mL H2/Lh) of the mutant were 43.40% and 45.07% higher than those of the WT, respectively. The mutant strain TH-253 may be used as an appropriate starting strain for future photosynthesis-based large scale hydrogen production.
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Affiliation(s)
- Jinling Cai
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China.
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Kim DH, Kim MS. Hydrogenases for biological hydrogen production. BIORESOURCE TECHNOLOGY 2011; 102:8423-8431. [PMID: 21435869 DOI: 10.1016/j.biortech.2011.02.113] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/25/2011] [Accepted: 02/26/2011] [Indexed: 05/30/2023]
Abstract
Biological H2 production offers distinctive advantages for environmental protection over existing physico-chemical methods. This study focuses specifically on hydrogenases, a class of enzymes that serves to effectively catalyze H2 formation from protons or oxidation to protons. It reviews the classification schemes (i.e., [NiFe]-, [FeFe]-, and [Fe]-hydrogenases) and properties of these enzymes, which are essential to understand the mechanisms for H2 production, the control of cell metabolism, and subsequent increases in H2 production. There are five kinds of biological hydrogen production methods, categorized based upon the light energy requirement, and feedstock sources. The genetic engineering work on hydrogenase to enhance H2 production is reviewed here. Further discussions in this study include nitrogenase, an enzyme that normally catalyzes the reduction of N2 to ammonia but is also able to produce H2 under photo-heterotrophic conditions, as well as other applicable fields of hydrogenase other than H2 production.
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Affiliation(s)
- Dong-Hoon Kim
- Wastes Energy Research Center, Korea Institute of Energy Research, 102 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
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