Results 41 to 50 of about 136,903 (266)

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

Molecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

Regulation of Metabolism by Hypoxia-Inducible Factor 1 [PDF]

Cold Spring Harbor Symposia on Quantitative Biology, 2011
The maintenance of oxygen homeostasis is critical for survival, and the master regulator of this process in metazoan species is hypoxia-inducible factor 1 (HIF-1), which controls both O(2) delivery and utilization. Under conditions of reduced O(2) availability, HIF-1 activates the transcription of genes, whose protein products mediate a switch from ...
openaire   +2 more sources

Synthesis of Neolamellarin A, an Inhibitor of Hypoxia-Inducible Factor-1 [PDF]

Natural Product Communications, 2009
Neolamellarin A, a metabolite isolated from the sponge Dendrilla nigra, was found to inhibit hypoxia-inducible factor-1 (HIF-1) activation by 26% at 10 μM concentration and inhibition of HIF-1 has become a major antitumor molecular target. Herein the first synthesis of neolamellarin A is described.
Khaled M, Arafeh, Nisar, Ullah
openaire   +2 more sources

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

Pathophysiological Response to Hypoxia — From the Molecular Mechanisms of Malady to Drug Discovery: Hypoxia-Inducible Factor-1 (HIF-1)-Active Cells as a Target for Cancer Therapy

Journal of Pharmacological Sciences, 2011
The microenvironment of solid tumors is characterized by low pO2 that is well below physiological levels. Intratumoral hypoxia is a major factor contributing to cancer progression and is exacerbated as a result of oxygen consumption by rapidly ...
Shinae Kizaka-Kondoh, Takahiro Kuchimaru, Tetsuya Kadonosono   +2 more
doaj   +1 more source

Hypoxia-Induced Autophagy Is Involved in Radioresistance via HIF1A-Associated Beclin-1 in Glioblastoma Multiforme

Heliyon, 2023
Radioresistance is the major factor of glioblastoma multiforme (GBM) treatment failure and relapse. Hypoxia and autophagy are linked to radioresistance and poor prognosis in solid tumors, but mechanisms remain unknown.
Jielin Wei, Kuikui Zhu, Zhe Yang, Ying Zhou, Zihan Xia, Jinghua Ren, Yanxia Zhao, Gang Wu, Cuiwei Liu   +8 more
doaj   +1 more source

Loss of IGF‐1R impairs DNA‐PKcs recruitment to chromatin leading to defective end‐joining

Molecular Oncology, EarlyView.
IGF‐1R promotes radioresistance by facilitating DNA‐PKcs recruitment to chromatin, enabling non‐homologous end‐joining (NHEJ) repair of double‐strand breaks. Inhibition or loss of IGF‐1R disrupts this recruitment to damage sites, driving compensatory reliance on microhomology‐mediated end‐joining (MMEJ) repair.
Matthew O. Ellis, Jack V. Mills, Wojciech Niedzwiedz, Valentine M. Macaulay   +3 more
wiley   +1 more source

Expression of Hypoxia-inducible factor 1-α and Vascular endothelial growth factor-C in locally advanced breast cancer patients

Clinics, 2011
BACKGROUND: Locally advanced breast cancers are more prevalent in underdeveloped countries. Targeted therapy has been improved to identify hallmarks that are specific to these subtypes of tumors.
Luiz Gustavo Oliveira Brito, Viviane Fernandes Schiavon, Jurandyr Moreira de Andrade, Daniel Guimarães Tiezzi, Fernanda Maris Peria, Heitor Ricardo Cosiski Marana   +5 more
doaj   +1 more source

The role of hypoxia inducible factor 1 (HIF-1) in hypoxia induced apoptosis.

Journal of clinical pathology, 2004
Apoptosis can be induced in response to hypoxia. The severity of hypoxia determines whether cells become apoptotic or adapt to hypoxia and survive. A hypoxic environment devoid of nutrients prevents the cell undergoing energy dependent apoptosis and cells become necrotic. Apoptosis regulatory proteins are delicately balanced.
Greijer, A.E., Wall, E. van der
openaire   +5 more sources