Metab Eng
State Key Laboratory of Biocatalysis and Enzyme Engineering, Environmental Microbial Technology Center of Hubei Province, College of Life Sciences, Hubei University, Wuhan, 430062, PR China. Electronic address:
Published: July 2023
Despite industrial bio-manufacturing progress using Bacillus licheniformis, the absence of a well-characterized toolbox allowing precise regulation of multiple genes limits its expansion for basic research and application. Here, a novel gene expression toolbox (GET) was developed for precise regulation of gene expression and high-level production of 2-phenylethanol. Firstly, we established a novel promoter core region mosaic combination model to combine, characterize and analyze different core regions. Characterization and orthogonal design of promoter ribbons allowed convenient construction of an adaptable and robust GET, gene gfp expression intensity was 0.64%-16755.77%, with a dynamic range of 2.61 × 10 times, which is the largest regulatory range of GET in Bacillus based on modification of promoter P43. Then we verified the protein and species universality of GET using different proteins expressed in B. licheniformis and Bacillus subtilis. Finally, the GET for 2-phenylethanol metabolic breeding, resulting in a plasmid-free strain producing 6.95 g/L 2-phenylethanol with a yield and productivity of 0.15 g/g glucose and 0.14 g/L/h, respectively, the highest de novo synthesis yield of 2-phenylethanol reported. Taken together, this is the first report elucidating the impact of mosaic combination and tandem of multiple core regions to initiate transcription and improve the output of proteins and metabolites, which provides strong support for gene regulation and diversified product production in Bacillus.
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http://dx.doi.org/10.1016/j.ymben.2023.06.004 | DOI Listing |
Front Plant Sci
January 2025
College of Horticulture, Sichuan Agricultural University, Chengdu, China.
The phenylacetone pathway, which encompasses flavonoids, lignin, and other compounds, is of paramount importance in determining the quality of pear fruit. Nevertheless, the precise regulatory functions of R2R3-MYB transcription factors in the metabolic pathways that regulate pear color changes remain unclear. In this study, we isolated an transcription factor from 'Red Zaosu' pears and demonstrated that it influenced the expression of several genes, including , and .
View Article and Find Full Text PDFIran J Basic Med Sci
January 2025
Department of Cardiology, Shanghai Pudong New Area Zhoupu Hospital (Shanghai Health Medical College Affiliated Zhoupu Hospital Shanghai.
Objectives: Echinacoside (ECH) is an anti-fibrotic phenylethanoid glycoside derived from the plant that protects against cardiac dysfunction by mitigating apoptosis, oxidative stress, and fibrosis. Nevertheless, ECH's precise function and mechanisms in addressing cardiac fibrosis are still not fully understood.
Materials And Methods: In our current investigation, we induced cardiac fibrosis in mice by administering Angiotensin II (Ang II) and subsequently assessed the effects of ECH treatment four weeks post-fibrosis induction.
Unlabelled: Early phase dose-finding (EPDF) trials are key in the development of novel therapies, with their findings directly informing subsequent clinical development phases and providing valuable insights for reverse translation. Comprehensive and transparent reporting of these studies is critical for their accurate and critical interpretation, which may improve and expedite therapeutic development. However, quality of reporting of design characteristics and results from EPDF trials is often variable and incomplete.
View Article and Find Full Text PDFFront Pharmacol
January 2025
Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Department of Pharmacy, West China Hospital, Chengdu, China.
Hydroxysafflor yellow A (HSYA), a natural pigment with a chalcone structure extracted from (Safflower), has been widely proven to have good efficacy on cardiovascular diseases, atherosclerosis, cancer, and diabetes. However, no study has reported on the anticancer mechanisms of Hydroxysafflor yellow A (HSYA), a principal bioactive compound in safflower. This review discusses recent developments in the physicochemical properties and sources, pharmacological effects and mechanisms, pharmacokinetic progress, and safety of HSYA, focusing on the involvement of HSYA in the regulation of related pathways and mechanisms of apoptosis, autophagy, and the tumor immune microenvironment in a variety of cancers.
View Article and Find Full Text PDFFront Immunol
January 2025
Research Laboratory Center, Guizhou Provincial People's Hospital, Guiyang, Guizhou, China.
Background: The rising incidence of breast cancer and its heterogeneity necessitate precise tools for predicting patient prognosis and tailoring personalized treatments. Epigenetic changes play a critical role in breast cancer progression and therapy responses, providing a foundation for prognostic model development.
Methods: We developed the Machine Learning-derived Epigenetic Model (MLEM) to identify prognostic epigenetic gene patterns in breast cancer.
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