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Liquid biopsies have emerged as a minimally invasive cancer detection and monitoring method, which could identify cancer-related alterations in nucleosome or histone levels and modifications in blood, saliva, and urine. Histones, the core component of the nucleosome, are essential for chromatin compaction and gene expression modulation. Increasing evidence suggests that circulating histones and histone complexes, originating from cell death or immune cell activation, could act as promising biomarkers for cancer detection and management. In this review, we provide an overview of circulating histones as a powerful liquid biopsy approach and methods for their detection. We highlight current knowledge on circulating histones in hematologic malignancies and solid cancer, with a focus on their role in cancer dissemination, monitoring, and tumorigenesis. Last, we describe recently developed strategies to identify cancer tissue-of-origin in blood plasma based on nucleosome positioning, inferred from nucleosomal DNA fragmentation footprint, which is independent of the genetic landscape.
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http://dx.doi.org/10.3390/ijms24020942 | DOI Listing |
J Hematol
August 2025
Department of Physiology and Pharmacology, College of Osteopathic Medicine, Sam Houston State University, Conroe, TX, USA.
Cell-free DNA (cfDNA) consists of fragmented nuclear and mitochondrial DNA circulating in the bloodstream, primarily originating from hematopoietic cells. While cfDNA analysis has transformed diagnostic medicine, its presence in transfused blood products introduces emerging clinical concerns. Donor-derived cfDNA may persist in transfusion recipients and contribute to transfusion-associated microchimerism, defined as the long-term presence of donor genetic material in recipient tissues or circulation.
View Article and Find Full Text PDFJ Endocrinol
September 2025
1Laboratório de Endocrinologia Molecular e Translacional (LEMT), Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo-SP-Brasil.
Triclosan (TCS), an antimicrobial agent widely used in personal care products, has been associated with impaired thyroid function and reduced thyroid hormone (TH) levels. However, its potential role in the developmental programming of thyroid dysfunction remains unclear. This study investigated the long-term effects of intrauterine TCS exposure on the hypothalamic-pituitary-thyroid (HPT) axis in adult rat offspring.
View Article and Find Full Text PDFDev Neurobiol
October 2025
Department of Child and Adolescent Psychiatry, Ankara University, Ankara, Turkey.
Despite extensive research, the etiological factors contributing to autism spectrum disorder (ASD) remain incompletely understood, with potential influences ranging from genetic predispositions to environmental factors. Sirtuin 1 (SIRT1), an NAD-dependent histone deacetylase involved in mitigating oxidative stress and its association with other neurodevelopmental disorders, explores its function in ASD. This study aimed to elucidate the relationship between SIRT1 and inflammatory cytokines, specifically interleukin 6 (IL-6) and tumor necrosis factor alpha (TNF-α), in patients with ASD.
View Article and Find Full Text PDFPharmaceuticals (Basel)
July 2025
Department of Anatomy and Genetics, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia.
Bone metastasis remains a significant cause of morbidity and diminished quality of life in patients with advanced breast, prostate, and lung cancers. Emerging research highlights the pivotal role of reversible epigenetic alterations, including DNA methylation, histone modifications, chromatin remodeling complex dysregulation, and non-coding RNA networks, in orchestrating each phase of skeletal colonization. Site-specific promoter hypermethylation of tumor suppressor genes such as and , alongside global DNA hypomethylation that activates metastasis-associated genes, contributes to cancer cell plasticity and facilitates epithelial-to-mesenchymal transition (EMT).
View Article and Find Full Text PDFSemin Respir Crit Care Med
August 2025
Department of Medicine and Pharmaceutical Sciences,, The University of Tennessee Health Science Center Department of Medicine, Memphis, United States.
(word count 290) Glucocorticoids (GCs) remain central to managing dysregulated systemic inflammation in critical illness, yet therapeutic response varies widely due to multifactorial glucocorticoid resistance (GCR). This chapter provides a translational framework to guide clinicians in identifying and overcoming GCR, with a central emphasis on restoring glucocorticoid receptor alpha (GRα) function. Mechanisms of resistance include reduced GRα expression, GRβ dominance, impaired nuclear translocation, oxidative stress, mitochondrial dysfunction, micronutrient depletion, and epigenetic suppression.
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