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  • Open Access

    RETRACTION

    Retraction: MicroRNA-33b Inhibits the Proliferation and Migration of Osteosarcoma Cells via Targeting Hypoxia-Inducible Factor-1α

    Oncology Research Editorial Offfce

    Oncology Research, Vol.33, No.12, pp. 4155-4155, 2025, DOI:10.32604/or.2025.075990 - 27 November 2025

    Abstract This article has no abstract. More >

  • Open Access

    REVIEW

    Hypoxic link between cancer cells and the immune system: The role of adenosine and lactate

    EDUARDO ALVARADO-ORTIZ1,2, MIGUEL ANGEL SARABIA-SáNCHEZ3,*

    Oncology Research, Vol.33, No.8, pp. 1803-1818, 2025, DOI:10.32604/or.2025.065953 - 18 July 2025

    Abstract The tumor microenvironment (TME) is characterized by a symbiosis between cancer cells and the immune cells. The scarcity of oxygen generates hostility that forces cancer cells to alter their biological features in solid tumors. In response to low oxygen availability, the Hypoxia Inducible Factors (HIF-1/2/3α) act as metabolic mediators, producing extracellular metabolites in the tumor microenvironment that influence the immune cells. The modulation of lactate and adenosine on immune evasion has been widely described; however, under hypoxic conditions, it has been barely addressed. Evidence has demonstrated an interplay between cancer and the immune cells, and More > Graphic Abstract

    Hypoxic link between cancer cells and the immune system: The role of adenosine and lactate

  • Open Access

    ARTICLE

    OTUD7B Stabilization by METTL14-Mediated m6A Methylation Drives HIF-1α Expression in Esophageal Squamous Cell Carcinoma

    Fei Ren1,#, Yansen Cai2,#, Yang Song1,*

    Oncology Research, Vol.33, No.8, pp. 2055-2074, 2025, DOI:10.32604/or.2025.061301 - 18 July 2025

    Abstract Objectives: Epigenetic changes, particularly N6-methyladenosine (m6A) modifications, play a pivotal role in cancer development. This study explored the role of ovarian tumor deubiquitinase 7B (OTUD7B) in esophageal squamous cell carcinoma (ESCC) in the context of m6A methylation and the hypoxia-inducible factor-1α (HIF-1α) pathway. Methods: The GSE179267 dataset was used to conduct differential gene expression analysis to identify key m6A-enriched genes. The Cancer Genome Atlas (TCGA), Cancer Cell Line Encyclopedia (CCLE), and Sequence-based RNA Adenosine Methylation Site Predictor (SRAMP) databases were used to evaluate the expression of OTUD7B in ESCC and its correlation with methyltransferase-like 14… More >

  • Open Access

    REVIEW

    Effects and mechanisms of exosomes in microenvironment angiogenesis in breast cancer: An updated review

    JUNPING LIU1,2, FEIRAN GAO1, DANTING WANG2, RUIXUE ZHOU2, CHUNYAN HUANG2,*

    Oncology Research, Vol.33, No.6, pp. 1323-1334, 2025, DOI:10.32604/or.2024.059113 - 29 May 2025

    Abstract Exosomes (EXOs) play an important role in the progression of breast cancer. EXOs, with a diameter of approximately 100 nm, have a simple structure but diverse functions, and can affect the development of breast cancer through signal transduction and molecular transfer, etc. Angiogenesis provides nutrients for the growth and metastasis of breast cancer and is a crucial part of tumor progression. The mechanism of tumor angiogenesis is complex. The VEGF/VEGFR pathway promotes angiogenesis by regulating the activities of ECs. Hypoxia, a common feature in the tumor microenvironment, as a key regulator, can affect angiogenesis… More > Graphic Abstract

    Effects and mechanisms of exosomes in microenvironment angiogenesis in breast cancer: An updated review

  • Open Access

    ARTICLE

    Hypoxia-induced exosomal lncRNA-PVT1 as a biomarker and mediator of EMT in hepatocellular carcinoma

    LIBO LIANG1, XINYI WANG2,3,4, YUPING ZENG2,3,4, HAO CHEN2,3,4, WEN ZHOU1, HONGYING MU2,3,4, GA LIAO5,6,*

    Oncology Research, Vol.33, No.6, pp. 1405-1421, 2025, DOI:10.32604/or.2024.056708 - 29 May 2025

    Abstract Objectives: Exosomal long noncoding RNAs (lncRNAs) might facilitate epithelial–mesenchymal transition (EMT) in liver cancer after transarterial chemoembolization (TACE), thereby enhancing tumor cell invasiveness and migration. This study investigated the prognostic role of plasma exosomal long noncoding RNA-plasmacytoma variant translocation 1 (lncRNA-PVT1) in TACE treated hepatocellular carcinoma (HCC). Methods: Plasma exosomal lncRNA-PVT1 was evaluated via qPCR before and after TACE. Hepatoma cell behavior was investigated in different HCC cell lines. A lncRNA-PVT1 plasmid was synthesized and overexpressed, and si-lncRNA PVT1 was transfected into poorly invasive cells to reveal its influence on cell characteristics. The lncRNA-PVT1–FoxM1 interaction… More > Graphic Abstract

    Hypoxia-induced exosomal lncRNA-PVT1 as a biomarker and mediator of EMT in hepatocellular carcinoma

  • Open Access

    ARTICLE

    The alternatively spliced diacylglycerol kinase gamma-Δ exon13 transcript generated under hypoxia promotes glioblastoma progression

    MING YANG1,#, LIANGZHAO CHU1,#, SHUKAI LIN2, HAN PENG1, NIYA LONG1, KAYA XU1, HUA YANG1, FENG HAN1,*, JIAN LIU1,*

    Oncology Research, Vol.33, No.5, pp. 1189-1198, 2025, DOI:10.32604/or.2024.055102 - 18 April 2025

    Abstract Background: Glioblastoma (GBM) is one of the most malignant types of central nervous system tumors. Oxygen deprivation in the tumor microenvironment is thought to be an important factor in promoting GBM progression. However, the mechanisms of hypoxia-promoted tumor progression remain elusive. Methods: Alternative splicing of diacylglycerol kinase gamma (DGKG)-Δ exon13 was amplified and verified by PCR-Sanger sequencing. The functions of DGKG and DGKG-Δ exon13 were analyzed by Cell counting kit-8 (CCK-8), Transwell, Matrigel-transwell experiments, and in vivo orthotropic GBM animal models. Transcriptome analyses were done to find out the regulated genes. Results: In this study, we found… More > Graphic Abstract

    The alternatively spliced diacylglycerol kinase gamma-Δ exon13 transcript generated under hypoxia promotes glioblastoma progression

  • Open Access

    REVIEW

    Hypoxia-inducible factor 1alpha and vascular endothelial growth factor in Glioblastoma Multiforme: a systematic review going beyond pathologic implications

    DIMITRA P. VAGELI1,2,*, PANAGIOTIS G. DOUKAS3, KERASIA GOUPOU2, ANTONIOS D. BENOS2, KYRIAKI ASTARA2,4, KONSTANTINA ZACHAROULI2, SOTIRIS SOTIRIOU5, MARIA IOANNOU2

    Oncology Research, Vol.32, No.8, pp. 1239-1256, 2024, DOI:10.32604/or.2024.052130 - 17 July 2024

    Abstract Glioblastoma multiforme (GBM) is an aggressive primary brain tumor characterized by extensive heterogeneity and vascular proliferation. Hypoxic conditions in the tissue microenvironment are considered a pivotal player leading tumor progression. Specifically, hypoxia is known to activate inducible factors, such as hypoxia-inducible factor 1alpha (HIF-1α), which in turn can stimulate tumor neo-angiogenesis through activation of various downward mediators, such as the vascular endothelial growth factor (VEGF). Here, we aimed to explore the role of HIF-1α/VEGF immunophenotypes alone and in combination with other prognostic markers or clinical and image analysis data, as potential biomarkers of GBM prognosis… More >

  • Open Access

    CASE REPORT

    Stubborn Hypoxia in Neonates with D-Transposition of the Great Arteries after Arterial Switch Operation: Central Sleep Apnea as the Cause and Potential Indicator of Brain Immaturity

    Camden L. Hebson1,*, Kyle Bliton2, Amr Y. Hammouda1, Kaitlyn Barr3, W. Hampton Gray4, Mohini Gunnett2, Waldemar F. Carlo1

    Congenital Heart Disease, Vol.19, No.2, pp. 185-195, 2024, DOI:10.32604/chd.2024.048871 - 16 May 2024

    Abstract D-transposition of the great arteries (d-TGA) is surgically repaired with the arterial switch operation (ASO) with excellent results, however short and long-term morbidities still develop including neurocognitive delay. Clinically significant central sleep apnea is uncommon in non-premature infants, but when present indicates immature autonomic control of respiration likely due to a neurologic disorder. We report the unanticipated finding of central sleep apnea in four-term neonates with d-TGA after uncomplicated ASO, with the short-term complication of delayed hospital discharge and long-term concerns regarding this early marker of brain immaturity and its hindrance to normal development. Within More >

  • Open Access

    REVIEW

    HIFs in hypoxic regulation of the extracellular matrix: focus on little-known player HIF-3

    ALEKSANDRA GORNOSTAEVA, LUDMILA BURAVKOVA, MARGARITA LOBANOVA, ELENA ANDREEVA*

    BIOCELL, Vol.48, No.5, pp. 677-692, 2024, DOI:10.32604/biocell.2024.048873 - 06 May 2024

    Abstract The structural and associated molecules of the extracellular matrix (ECM) complex is an important component of the local milieu of cells, both for maintaining their functions and homeostasis. It is a dynamic structure that is finely tuned to changes in the microenvironment. One of these factors is hypoxia, which can arise in tissues due to physiological or pathological effects. As a result of the hypoxic effect, the properties of the ECM are significantly modified, stiffness increases, the balance between degradation and synthesis of structural proteins shifts, and the deposition of biologically active mediators’ changes. Hypoxia-inducible… More >

  • Open Access

    ARTICLE

    Inhibition of VEGF-A expression in hypoxia-exposed fetal retinal microvascular endothelial cells by exosomes derived from human umbilical cord mesenchymal stem cells

    JING LI1,2, WANWAN FAN4, LILI HAO1, YONGSHENG LI5, GUOCHENG YU1, WEI SUN6, XIANQIONG LUO2,*, JINGXIANG ZHONG1,3,*

    BIOCELL, Vol.47, No.11, pp. 2485-2494, 2023, DOI:10.32604/biocell.2023.044177 - 27 November 2023

    Abstract Objective: This study aimed to investigate the potential of human umbilical cord mesenchymal stem cell (hucMSC)-derived exosomes (hucMSC-Exos) in inhibiting hypoxia-induced cell hyper proliferation and overexpression of vascular endothelial growth factor A (VEGF-A) in immature human fetal retinal microvascular endothelial cells (hfRMECs). Methods: Exosomes were isolated from hucMSCs using cryogenic ultracentrifugation and characterized through various techniques, including transmission electron microscopy, nanoparticle tracking analysis, bicinchoninic acid assays, and western blotting. The hfRMECs were identified using von Willebrand factor (vWF) co-staining and divided into four groups: a control group cultured under normoxic condition, a hypoxic model group, a hypoxic… More > Graphic Abstract

    Inhibition of VEGF-A expression in hypoxia-exposed fetal retinal microvascular endothelial cells by exosomes derived from human umbilical cord mesenchymal stem cells

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