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Here, we report the construction and functional analysis of synthetic promoters designed for gene therapy applications requiring strong and specific gene expression in melanoma cell lines. We have analysed the transcriptional activity of different combinations of two transcriptional regulatory modules, a melanocyte-specific element from the human tyrosinase promoter and a cell-cycle-specific element from the human alpha-fetoprotein promoter. Transient expression assays in different cell lines show that several of these composite synthetic promoters can drive a strong and selective expression of a reporter gene in melanoma cell, providing us with a new powerful tool for gene therapy of melanomas.
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http://dx.doi.org/10.1016/j.febslet.2004.11.068 | DOI Listing |
Biotechnol Lett
September 2025
National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China.
Vitreoscilla hemoglobin (VHb), a homodimeric bacterial hemoglobin, exhibits distinct oxygen-binding properties that enhance cellular respiration and metabolic activity, particularly under hypoxic conditions. This review presents an updated and comprehensive synthesis of VHb-related research, encompassing its molecular structure, redox biochemistry, and transcriptional regulation. Compared with previous reviews, this work integrates recent mechanistic insights-especially those concerning transcription factor interactions, redox-coupled electron transfer, and structural-function relationships elucidated via targeted mutagenesis.
View Article and Find Full Text PDFJ Control Release
September 2025
State Key Laboratory of Bioreactor Engineering, Newworld Institute of Biotechnology, East China University of Science and Technology, Shanghai 200237, PR China. Electronic address:
Live bacterial therapeutics (LBT) represent a transformative modality for managing refractory chronic diseases. However, the absence of optimized microbial chassis systems is a significant barrier to clinical translation. To bridge this gap, we engineered Escherichia coli Nissle 1917 (EcN) into a versatile platform that meets the requirements for strain development and clinical application.
View Article and Find Full Text PDFPlant Biotechnol J
September 2025
State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
Agrobacterium-mediated T-DNA integration into plant genomes represents a cornerstone for transgenic expression in plant basic research and synthetic biology. However, random T-DNA integration can disrupt essential endogenous genes or compromise transgene expression, stressing the need for targeted integration strategies. Here we explored CRISPR-aided targeted T-DNA integration (CRISTTIN) in Arabidopsis, leveraging CRISPR-induced double-strand breaks (DSBs) to facilitate precise T-DNA insertion.
View Article and Find Full Text PDFMol Cells
September 2025
Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Bioinformatics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon 34141, Republic of Korea; Digital Biotech
Plant synthetic biology is an emerging field that combines bioinformatics, computational gene circuit design, and plant science. It has the potential to be applied in various areas, including the production of pharmaceuticals, vaccines, biofuels, and various biomaterials, including plant natural products (PNP). This review highlights recent advancements in plant synthetic biology, particularly in the development and application of biological parts such as promoters and terminators, which play a crucial role in precise gene expression regulation.
View Article and Find Full Text PDFGene
September 2025
School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China. Electronic address:
Komagataella phaffii is a famous microbial host in synthetic biology field for expressing heterologous proteins under alcohol oxidase 1 promoter (P). This study undertook two successive rounds of gene fragment knockout, identifying a 13 bp segment, termed D3, as a negative cis-acting element in the 5' untranslated region of P. Notably, upon knockout of the D3 fragment, the expression of green fluorescent protein (GFP), serving as the model for heterologous protein expression, improved by 3.
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