AI Article Synopsis
- Nrf2 is a transcription factor that helps regulate genes responsible for cellular defense through the antioxidant response element (ARE), and its absence in mice makes them more vulnerable to toxic substances.
- A study involving wild type and Nrf2-deficient mice was conducted using butylated hydroxyanisole (BHA) to boost Nrf2 activity and analyze the liver proteomes, employing techniques like 2D gel electrophoresis and MALDI mass spectrometry.
- The results identified 24 proteins regulated by Nrf2, with 3 being constitutively expressed, 16 inducible, and 5 showing both types of regulation, thus highlighting Nrf2's crucial role in activating and maintaining the expression of protective
Article Abstract
Background: The transcription factor Nrf2 regulates expression of multiple cellular defence proteins through the antioxidant response element (ARE). Nrf2-deficient mice (Nrf2(-/-)) are highly susceptible to xenobiotic-mediated toxicity, but it is not known whether this reflects low basal expression or reduced inducibility of Nrf2-regulated genes in response to chemical insults.
Methods: Wild type and Nrf2(-/-) mice were fed diet supplemented with the established Nrf2 inducer butylated hydroxyanisole (BHA) [0.5% (w/w)] for 14 days. To define the range of Nrf2-regulated proteins, both basally and following exposure to BHA, a comparison of the liver proteomes of Nrf2(-/-) and wild type mice was conducted. The two-dimensional gel electrophoresis (2-DE) technique and MALDI mass spectrometry were utilized in the attempt to define Nrf2-regulated proteins.
Results: Overall, 24 proteins were identified, which were regulated either basally (3 proteins), inducibly (16 proteins), or both (5 proteins). These included several well-established Nrf2-driven gene products e.g., aldo-keto reductase and glutathione transferases. Multiple consensus ARE/ARE-like sequences were found in the Nrf2-regulated genes.
Conclusions: This study confirms the central role of Nrf2 in the induction of multiple defense proteins as well as its control in the constitutive expression of certain proteins.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s1734-1140(12)70863-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
TRIB3 is a biomarker of poor prognosis in laryngeal squamous cell carcinoma and may affect tumor development through PI3K / AKT / mTOR pathway.
Clinics (Sao Paulo)
January 2025
Department of Otolaryngology and Head and Neck Surgery, The First Affiliated Hospital of Bengbu Medical College, Anhui Province, China. Electronic address:
Objective: TRIB3 has been confirmed to participate in and regulate biological metabolic activities in head and neck tumors such as nasopharyngeal carcinoma and oropharyngeal carcinoma, so the purpose of this study was to explore whether there is a correlation between TRIB3 and Laryngeal Squamous Cell Carcinoma (LSCC) and to preliminarily explore the biological characteristics of TRIB3 in LSCC.
Methods: TRIB3 expression in the LSCC was analyzed based on The Cancer Genome Atlas (TCGA) database. CCK-8 assay, Colony Formation Assay, wound healing assay, and Transwell assay were performed to investigate the roles of TRIB3 in the proliferation, invasion and metastasis of LSCC.
Development of translationally active cell lysates from different filamentous fungi for application in cell-free protein synthesis.
Enzyme Microb Technol
January 2025
Institute of Biotechnology, Brandenburg University of Technology Cottbus-Senftenberg, Universitätsplatz 1, Senftenberg 01968, Germany. Electronic address:
There is an enormous potential for cell-free protein synthesis (CFPS) systems based on filamentous fungi in view of their simple, fast and mostly inexpensive cultivation with high biomass space-time yields and in view of their catalytic capacity. In 12 of the 22 different filamentous fungi examined, in vitro translation of at least one of the two reporter proteins GFP and firefly luciferase was detected. The lysates showing translation of a reporter protein usually were able to synthesize a functional cell-free expressed unspecific peroxygenase (UPO) from the basidiomycete Cyclocybe (Agrocybe) aegerita.
View Article and Find Full Text PDFNew cinnamic acid sugar esters as potential UVB filters: Synthesis, cytotoxicity, and physicochemical properties.
Carbohydr Res
January 2025
Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Campus Scientifico E. Mattei, via Ca' Le Suore 2, 61029, Urbino, PU, Italy. Electronic address:
Cinnamic Acid Sugar Ester Derivatives (CASEDs) are a class of natural compounds that exhibit several interesting biological activities. However, to date, no examples of their use in sunscreen formulations have been reported. Here, we describe the synthesis of a series of novel cinnamic acid esters of glucose (4a-g), ribose (4h) and lactose (4i) starting from the respective acetals 3.
View Article and Find Full Text PDFTargeted FTO knockout in endothelial cells Boosts adhesion and lowers inflammatory infiltration to alleviate pulmonary arterial hypertension.
Biochem Biophys Res Commun
January 2025
Department of Ultrasonography, Fuwai Yunnan Hospital, Chinese Academy of Medical, Sciences/Affiliated Cardiovascular Hospital of Kunming Medical University, Kunming, 650102, China. Electronic address:
Pulmonary arterial hypertension (PAH) is a syndrome characterized by increased pulmonary vascular resistance and elevated pulmonary artery pressure, ultimately leading to right heart failure and even death. Increasing evidence implicates the fat mass and obesity-associated protein (FTO) in various metabolic and inflammatory pathways; however, its role in pulmonary endothelial function and PAH remains largely unexplored. In this study, we examined the effects of endothelial cell-specific FTO knockout on PAH development.
View Article and Find Full Text PDFBiomechanical and Functional Features of the Carrier Erythrocytes Prolonging Circulation Time of Biotherapeutic Targeted to Glycophorin A.
Bioconjug Chem
January 2025
Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-5127, United States.
Red blood cells (RBCs) serve as natural transporters and can be modified to enhance the pharmacokinetics and pharmacodynamics of a protein cargo. Affinity targeting of Factor IX (FIX) to the RBC membrane is a promising approach to improve the (pro)enzyme's pharmacokinetics. For RBC targeting, purified human FIX was conjugated to the anti-mouse glycophorin A monoclonal antibody Ter119.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!