ArticleInternational journal of cancer2008
PX-478, an inhibitor of hypoxia-inducible factor-1alpha, enhances radiosensitivity of prostate carcinoma cells.
Article in International journal of cancer, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
79 citing papers in PubMed, 126 citations in OpenAlex.
- Review
- HIF inhibition: Current strategies and clinical challenges.Redox biology · 2026Review
- Hypoxia-mediated epicardial signaling coordinates coronary angiogenesis and myocardial expansion during zebrafish ventricle maturation.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Metabolism and Immunity-Adapted Radiotherapy (M.I.A.R): A Conceptual Framework for Overcoming the Therapeutic Plateau in Clinical Radiotherapy.Current oncology (Toronto, Ont.) · 2026Review
- GPX3 suppresses gallbladder cancer progression by modulating redox balance, glycolysis, and anti-tumor immunity.Oncogenesis · 2026Article
- <p>Regulatory networks of HIFs in tumor‑infiltrating immune cells: From molecular mechanisms to therapeutic implications (Review)</p>.International journal of oncology · 2026Review
- Chemoresistance: The hidden barrier in cancer treatment.Cancer pathogenesis and therapy · 2026Review
- Dual phase modeling of Chrysotile carcinogenesis from 3D cell transformation to orthotopic tumors.Scientific reports · 2026Article
- Luteolin Enhances Anticancer Effects of PX-478 during Hypoxic Response in Metastatic Breast Cancer Cells.Anti-cancer agents in medicinal chemistry · 2026Article
- Myeloid metabolism and its role in immunotherapy of cancer.Journal for immunotherapy of cancer · 2025Review
- Glycolytic Reprogramming in Uterine Fibroids: Genetic, Transcriptomic, Proteomic, and Metabolomic Insights.Genes · 2025Review
- Macrophage fatty acid metabolism under chronic hypoxia shapes γδ T cell recruitment via CCL22.iScience · 2025Article
- Targeting Prostate Cancer Metabolism Through Transcriptional and Epigenetic Modulation: A Multi-Target Approach to Therapeutic Innovation.International journal of molecular sciences · 2025Review
- Heterogeneous Responses to High-Dose Testosterone in Castration-Resistant Prostate Cancer Tumors with Mixed Rb-Proficient and Rb-Deficient Cells.Molecular cancer therapeutics · 2025Article
- Role of Hypoxia-Inducible Factors in Respiratory Syncytial Virus Infection-Associated Lung Disease.International journal of molecular sciences · 2025Article
- Harnessing transcriptional regulation of alternative end-joining to predict cancer treatment.NAR cancer · 2025Article
- Rapamycin Increases the Development Competence of Yak (Animals : an open access journal from MDPI · 2025Article
- Deciphering molecular pathways driving cancer invasion and metastasis: advances and therapeutic prospects.Frontiers in oncology · 2025Review
- Integrating Ultrabright Polymer Dots and Stereo NIR-II Imager for Assessing Anti-Angiogenic Drugs in Oral Cancer Model.Journal of cellular and molecular medicine · 2025Article
- HIF1A acts as target of XiHuang Pill in the treatment of papillary thyroid cancer by regulating dedifferentiation.Frontiers in chemistry · 2025Article
19 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 3 institutions in 1 country.
Funding
Abstract
Overexpression of hypoxia-inducible factor-1alpha (HIF-1alpha) in human tumors is associated with poor prognosis and poor outcome to radiation therapy. Inhibition of HIF-1alpha is considered as a promising approach in cancer therapy. The purpose of this study was to test the efficacy of a novel HIF-1alpha inhibitor PX-478 as a radiosensitizer under normoxic and hypoxic conditions in vitro. PC3 and DU 145 prostate carcinoma cells were treated with PX-478 for 20 hr, and HIF-1alpha protein level and clonogenic cell survival were determined under normoxia and hypoxia. Effects of PX-478 on cell cycle distribution and phosphorylation of H2AX histone were evaluated. PX-478 decreased HIF-1alpha protein in PC3 and DU 145 cells. PX-478 produced cytotoxicity in both cell lines with enhanced toxicity under hypoxia for DU-145. PX-478 (20 mumol/L) enhanced the radiosensitivity of PC3 cells irradiated under normoxic and hypoxic condition with enhancement factor (EF) 1.4 and 1.56, respectively. The drug was less effective in inhibiting HIF-1alpha and enhancing radiosensitivity of DU 145 cells compared to PC3 cells with EF 1.13 (normoxia) and 1.25 (hypoxia) at 50 mumol/L concentration. PX-478 induced S/G2M arrest in PC3 but not in DU 145 cells. Treatment of PC3 and DU 145 cells with the drug resulted in phosphorylation of H2AX histone and prolongation of gammaH2AX expression in the irradiated cells. PX-478 is now undergoing Phase I clinical trials as an oral agent. Although the precise mechanism of enhancement of radiosensitivity remains to be identified, this study suggests a potential role for PX-478 as a clinical radiation enhancer.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.