Tumor-suppressive effects of PTEN are well-known, but modern evidence suggest that they are not limited to its ability to inhibit pro-oncogenic PI3K/AKT signaling pathway. Features of PTEN structure facilitate its interaction with substrates of different nature and display its activity in various ways both in the cytoplasm and in cell nuclei, which makes it possible to take a broader look at its ability to suppress tumor growth. The possible mechanisms of the loss of PTEN effects are also diverse - PTEN can be regulated at many levels, leading to change in the protein activity or its amount in the cell, while their significance for the development of malignant tumors has yet to be studied. Here we summarize the current data on the PTEN structure, its functions and changes in its regulatory mechanisms during malignant transformation of the cells, focusing on one of the most sensitive to the loss of PTEN types of malignant tumors - endometrial cancer.
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http://dx.doi.org/10.1134/S0006297922110104 | DOI Listing |
Electromagn Biol Med
January 2025
Department of Computer Applications, Kalasalingam Academy of Research and Education - Deemed to be University, Krishnankoil, India.
Brain tumors can cause difficulties in normal brain function and are capable of developing in various regions of the brain. Malignant tumours can develop quickly, pass through neighboring tissues, and extend to further brain regions or the central nervous system. In contrast, healthy tumors typically develop slowly and do not invade surrounding tissues.
View Article and Find Full Text PDFElife
January 2025
Department of Neurology, Weill Institute for Neuroscience, University of California San Francisco, San Francisco, United States.
Mutations in Sonic Hedgehog (SHH) signaling pathway genes, for example, (SUFU), drive granule neuron precursors (GNP) to form medulloblastomas (MB). However, how different molecular lesions in the Shh pathway drive transformation is frequently unclear, and mutations in the cerebellum seem distinct. In this study, we show that fibroblast growth factor 5 (FGF5) signaling is integral for many infantile MB cases and that expression is uniquely upregulated in infantile MB tumors.
View Article and Find Full Text PDFInt J Nanomedicine
January 2025
College of Chemical and Material Engineering, Quzhou University, Quzhou, Zhejiang Province, 324000, People's Republic of China.
Background: Precise intraoperative tumor delineation is essential for successful surgical outcomes. However, conventional methods are often incompetent to provide intraoperative guidance due to lack specificity and sensitivity. Recently fluorescence-guided surgery for tumors to delineate between cancerous and healthy tissues has attracted widespread attention.
View Article and Find Full Text PDFChembiochem
January 2025
Peking University Cancer Hospital: Beijing Cancer Hospital (inner mongolia campus), Department of Interventional Therapy, CHINA.
Photodynamic therapy (PDT) has emerged as an innovative approach in cancer treatment, effectively inducing tumor cell death through light-triggered reactive oxygen species (ROS) generation. Additionally, PDT can also trigger antitumor immune responses, thereby reducing the risk of postoperative tumor recurrence. However, the development of highly efficient photosensitizers aimed at activating immune responses for comprehensive tumor eradication remains at an early stage.
View Article and Find Full Text PDFClin Transl Med
January 2025
International Cooperation Laboratory on Signal Transduction, National Center for Liver Cancer, Ministry of Education Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Shanghai Key Laboratory of Hepatobiliary Tumor Biology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University/NAVAL Medical University, Shanghai, China.
Alcohol-related liver disease (ALD) is a common chronic liver disease caused by long-term excessive alcohol consumption and responsible for more than half of all liver-related deaths worldwide. The molecular mechanisms associated with ALD were not fully understood. In this study, we performed single-cell RNA sequencing on liver tissues obtained from ALD patients and healthy liver donors.
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