ArticleThe Journal of clinical endocrinology and metabolism2022
The p300 Inhibitor A-485 Exerts Antitumor Activity in Growth Hormone Pituitary Adenoma.
Article in The Journal of clinical endocrinology and metabolism, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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The trial behind it
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Who cites it
23 citing papers in PubMed, 30 citations in OpenAlex.
- Synergistic Antitumor Activity of HAT Inhibitor A485 and XPO1 Inhibitor KPT8602 in Multiple Myeloma.Cancer medicine · 2026Article
- Unveiling lactylation: A novel frontier in the pathogenesis of diabetic nephropathy (Review).International journal of molecular medicine · 2026Review
- Lactylation in cancer: molecular mechanisms and advances in clinical study.Molecular cancer · 2026Review
- p300: expanding beyond acetylation to mastermind lactylation-dependent tumorigenesis.Frontiers in cell and developmental biology · 2026Review
- β-Hydroxybutyrate promotes cancer metastasis through β-hydroxybutyrylation-dependent stabilization of Snail.Nature communications · 2025Article
- Multi-omics study reveals gut microbiota dysbiosis and tryptophan metabolism alterations in GH-PitNET progression.Scientific reports · 2025Article
- Protein lactylation and immunotherapy in gliomas: A novel regulatory axis in tumor metabolism (Review).International journal of oncology · 2025Review
- Decoding a novel non-enzymatic protein acetylation mechanism in sperm that is essential for fertilizing potential.Biological research · 2025Article
- A-485 alleviates postmenopausal osteoporosis by activating GLUD1 deacetylation through the SENP1-Sirt3 signal pathway.Journal of orthopaedic surgery and research · 2025Article
- Targeting EP300 in diffuse large b-cell lymphoma: efficacy of A485 and synergistic effects with XPO1 inhibition.BMC cancer · 2025Article
- The role of lactylation in breast cancer development: mechanisms, clinical translation and new strategies for treatment.Frontiers in oncology · 2025Review
- Potential role of lactylation in intrinsic immune pathways in lung cancer.Frontiers in pharmacology · 2025Review
- Genetic dysregulation of EP300 in cancers in light of cancer epigenome control - targeting of p300-proficient and -deficient cancers.Molecular therapy. Oncology · 2024Review
- Diagnosis and Management of Aggressive/Refractory Growth Hormone-Secreting Pituitary Neuroendocrine Tumors.International journal of endocrinology · 2024Review
- From Genes to Therapy: Pituitary Adenomas in the Era of Precision Medicine.Biomedicines · 2023Review
- Comparative Analysis of Drug-like EP300/CREBBP Acetyltransferase Inhibitors.ACS chemical biology · 2023Article
- Prolactin and Growth Hormone Signaling and Interlink Focused on the Mammosomatotroph Paradigm: A Comprehensive Review of the Literature.International journal of molecular sciences · 2023Review
- Comparative analysis of drug-like EP300/CREBBP acetyltransferase inhibitors.bioRxiv : the preprint server for biology · 2023Article
- Fundamental concepts of protein therapeutics and spacing in oncology: an updated comprehensive review.Medical oncology (Northwood, London, England) · 2023Review
- Effects of the Acetyltransferase p300 on Tumour Regulation from the Novel Perspective of Posttranslational Protein Modification.Biomolecules · 2023Review
Corrections and comments
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Authors and funding
18 authors at 4 institutions in 1 country.
Funding
Abstract
contextGrowth hormone pituitary adenoma (GHPA), a major subtype of pituitary adenoma (PA), can lead to progressive somatic disfigurement, multiple complications, and even increased mortality. The efficacy of current treatments is limited; thus, a novel pharmacological treatment is urgently needed. As a histone acetyltransferase (HAT) coactivator, p300 can regulate the transcription of several genes that are crucial for PA tumorigenesis and progression. However, the role of p300 and its catalytic inhibitor in GHPA is still unclear.
objectiveWe aimed to identify the expression of p300 in GHPA and in normal pituitary glands.
methodsThe expression of p300 was detected in GHPA and normal pituitary tissues. Genetic knockdown was performed by siRNA. The efficacy of the p300 inhibitor A-485 in the cell cycle, proliferation, apoptosis, and hormone secretion was investigated by flow cytometry, ELISAs, Western blotting, and qRT-PCR. RNA sequencing, bioinformatic analysis, and subsequent validation experiments were performed to reveal the potential biological mechanism of A-485.
resultsHigh expression of p300 was found in GHPA tissues compared with normal pituitary tissues. Knockdown of p300 inhibited cell proliferation and clone formation. Treatment with A-485 suppressed cell growth and inhibited the secretion of GH in vitro and in vivo. Further mechanistic studies showed that A-485 could downregulate the expression or activity of several oncogenes, such as genes in the Pttg1, c-Myc, cAMP and PI3K/AKT/mTOR signaling pathways, which are crucial for PA tumorigenesis and progression.
conclusionOur findings demonstrate that inhibition of HAT p300 by its selective inhibitor A-485 is a promising therapy for GHPA.
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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.