Here we show that Armadillo and Pangolin (dTCF), downstream effectors of the Wingless (Wg) signal transduction pathway, activate transcription of the important DNA replication-related genes encoding Drosophila proliferating cell nuclear antigen (PCNA) and DNA replication-related element-binding factor (DREF). By transient luciferase expression assays and band mobility shift assays, we demonstrated the PCNA gene to be a direct target gene for the Armadillo/Pangolin complex. Using a GAL4-UAS system, stimulation of the PCNA gene by Armadillo/Pangolin was confirmed in adult females. From the published reports of an inhibitory role, we expected that Drosophila CREB-binding protein (dCBP) would interfere with activation. However, effects were only observed with the DREF but not the PCNA gene. In the latter case, as in mammals, dCBP could potentiate Armadillo-mediated activation. These results suggest that first, PCNA and DREF genes are targets of the Armadillo/Pangolin complex and second, dCBP modulates Wg signaling in a gene-specific manner.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.bbaexp.2004.07.003 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Modulation of biological activities in adipose derived stem cells by histone deacetylation.
Sci Rep
January 2025
The Department of Biomedical and Clinical Sciences (BKV), Linköping University, Linköping, Sweden.
Difficult-to-heal wounds management accounts for about 4% of healthcare costs, highlighting the need for innovative solutions. Extracellular signals drive cell proliferation during tissue regeneration, while epigenetic mechanisms regulate stem cell homeostasis, differentiation, and skin repair. Exploring epigenetic regulation in adipose-derived stem cells (ADSCs) holds promise for improving skin injury treatments.
View Article and Find Full Text PDFProximity Ligation Assay to Study Oncogene-Derived Transcription-Replication Conflicts.
J Vis Exp
January 2025
Institute of Biochemistry and Molecular Biology, Hengyang Medical School, University of South China; National Health Commission Key Laboratory of Birth Defect Research and Preventio, Hunan Provincial Maternal and Child Health Care Hospital;
Both DNA replication and RNA transcription utilize genomic DNA as their template, necessitating spatial and temporal separation of these processes. Conflicts between the replication and transcription machinery, termed transcription-replication conflicts (TRCs), pose a considerable risk to genome stability, a critical factor in cancer development. While several factors regulating these collisions have been identified, pinpointing primary causes remains difficult due to limited tools for direct visualization and clear interpretation.
View Article and Find Full Text PDFTherapeutic Potential and Mechanistic Insights of a Novel Synthetic α-Lactalbumin-Derived Peptide for the Treatment of Liver Fibrosis.
J Clin Exp Hepatol
December 2024
Biochemistry and Molecular Biology Department, Theodor Bilharz Research Institute, Giza, Egypt.
Background: Liver fibrosis is a serious global health issue, but current treatment options are limited due to a lack of approved therapies capable of preventing or reversing established fibrosis.
Aim: This study investigated the antifibrotic effects of a synthetic peptide derived from α-lactalbumin in a mouse model of thioacetamide (TAA)-induced liver fibrosis.
Methods: analyses were conducted to assess the physicochemical properties, pharmacophore features, and docking interactions of the peptide.
Vimentin as a contributing factor in SARS-CoV-2-induced orchitis on postmortem testicular autopsy of COVID-19 cases: A case-control study.
Int J Reprod Biomed
November 2024
Urology and Nephrology Research Center, Research Institute for Urology and Nephrology, Shahid Beheshti University of Medical Sciences (SBMU), Tehran, Iran.
Background: Coronavirus disease 2019 (COVID-19) was identified in China in late December 2019 and led to a pandemic that resulted in millions of confirmed cases and deaths. The causative agent, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), uses distinct receptors and co-receptors to enter host cells. Vimentin has emerged as a potential co-receptor for SARS-CoV-2 due to the high level of vimentin expression in testis tissue.
View Article and Find Full Text PDFAnti-Müllerian hormone regulates ovarian granulosa cell growth in PCOS rats through SMAD4.
Int J Gynaecol Obstet
January 2025
Center for Reproductive Medicine, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China.
Objective: Polycystic ovary syndrome (PCOS) is a diverse condition with an unknown cause. The precise mechanism underlying ovulatory abnormalities in PCOS remains unclear. It is widely believed that malfunction of granulosa cells is the primary factor contributing to aberrant follicular formation in PCOS.
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!