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The genus is an important group of filamentous fungi, and the various biological activities of its secondary metabolites (SMs) have great biosynthetic potential. Despite over 4200 SMs having been isolated from spp., their metabolic potential remains unexplored due to the presence of numerous silent biosynthetic gene clusters (BGCs) in their genomes. Fortunately, over the last two decades, the global transcriptional regulator (GTR) engineering strategy has emerged as a powerful tool for activating these cryptic BGCs in order to synthesize previously undiscovered SMs from spp. This review highlights recent advances in fungal GTR engineering techniques, the regulatory mechanisms of GTRs, and current challenges and future perspectives for their application in natural product discovery in the genus .
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http://dx.doi.org/10.3390/jof11060449 | DOI Listing |
mSphere
September 2025
Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Blacksburg, Virginia, USA.
Apicomplexan AP2 (ApiAP2) family proteins are a family of transcription factors that are known to regulate gene expression in apicomplexan pathogens, including . In this study, we focused on TgAP2X-7, a member of the APiAP2 family that is predicted to be essential for fitness. Endogenous tagging of TgAP2X-7 followed by immunofluorescence analysis revealed that it's a cell cycle-regulated nuclear protein with peak expression in the G1 phase.
View Article and Find Full Text PDFRecursive splice sites are rare motifs postulated to facilitate splicing across massive introns and shape isoform diversity, especially for long, brain-expressed genes. The necessity of this unique mechanism remains unsubstantiated, as does the role of recursive splicing (RS) in human disease. From analyses of rare copy number variants (CNVs) from almost one million individuals, we previously identified large, heterozygous deletions eliminating an RS site (RS1) in the first intron of that conferred substantial risk for attention deficit hyperactivity disorder (ADHD) and other neurobehavioral traits.
View Article and Find Full Text PDFNAR Mol Med
April 2025
Tumor Vaccine and Biotechnology Branch, Division of Cellular Therapy 2, Office of Cellular Therapy and Human Tissue, Center for Biologics Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD 20993, United States.
Changes in global climate have contributed to increased tick and mosquito (vector) populations and subsequent vector-borne flavivirus infections in humans. This increase poses a threat to the safety of human-derived biologics such as cell and gene therapy. We conducted time-course transcriptomic and protein analyses to uncover host molecular factors driving the virulence of Zika virus (ZIKV) and Dengue virus (DENV) in relation to host defense mechanisms, as these viruses have caused recent flavivirus outbreaks.
View Article and Find Full Text PDFFront Plant Sci
August 2025
State Key Laboratory of Tree Genetics and Breeding, Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou, China.
Introduction: Shikimic acid, as a critical precursor for oseltamivir synthesis in antiviral pharmaceuticals, faces escalating global demand. Although leaves have emerged as a promising natural source of shikimic acid owing to their exceptional content of this valuable compound and substantial biomass production capacity, the molecular mechanisms underlying its biosynthesis and downstream metabolic regulation in leaves remain largely unknown.
Methods: Here, the concentration of shikimic acid in 33 clones were assessed, and 1# (referred as HS) had the highest level.
NAR Cancer
September 2025
Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, United States.
The mycotoxin, aflatoxin B (AFB), is a potent mutagen that contaminates agricultural food supplies. After ingestion, AFB is oxidized into a reactive electrophile that alkylates DNA, forming bulky lesions such as the genotoxic formamidopyrimidine lesion, AFB-Fapy dG. This lesion is mainly repaired by nucleotide excision repair (NER) in bacteria; however, in humans the picture is less clear.
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