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The treatment of malignant primary brain tumors is challenging. Concomitant radiochemotherapy has become the standard clinical treatment for malignant glioma, but there are two critical challenges to overcome in order to increase efficacy. First, glioma is known to have increased resistant to radiation due to its intra-tumoral hypoxia. In addition, the blood-brain barrier (BBB) restricts the distribution of the chemotherapeutic agent to the brain. Therefore, we developed a hypoxic radiosensitizer-prodrug liposome (MLP), in order to deliver DOX to the tumor and to overcome the above challenges, achieving a synergistic chemo-/radiotherapy treatment of malignant glioma. In this study, hypoxic radiosensitizer nitroimidazoles were conjugated with lipid molecules with a hydrolysable ester bond to form MDH. MDH was mixed together with DSPE-PEG2000 and cholesterol to make MLP liposomes, which were found to have strong radiosensitivity and to promote cargo release under hypoxic conditions, due to the properties of nitroimidazoles under hypoxic conditions. MLP/DOX was found to have distinct advantages, including precise and stealthy pharmacokinetics and efficient passive uptake by the tumor. Furthermore, the combination of MLP/DOX and radiotherapy (RT) significantly inhibited glioma growth as assessed by in vivo bioluminescence imaging. These findings suggest that MLP is a promising candidate as a DOX delivery system to enhance the antitumor treatment effects on glioma, owing to synergistic chemo-/radiotherapy.
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http://dx.doi.org/10.1016/j.biomaterials.2017.01.001 | DOI Listing |
Am J Hematol
December 2024
Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
Patients who develop acute myeloid leukemia (AML) after having received treatment for myelodysplastic syndrome (MDS) or related conditions have particularly poor outcomes. This study analyzed adult patients with newly diagnosed AML who previously had MDS, chronic myelomonocytic leukemia (CMML), or MDS/myeloproliferative neoplasm (MPN) overlap syndrome, and who had received hypomethylating agents, chemotherapy, and/or allogeneic stem cell transplantation (HSCT) for these antecedent disorders. From January 2012 to August 2023, we included 673 patients with a median age of 70 years (range, 19-94); 536 (80%) had transformed from MDS, and the remainder from CMML or MDS-MPN.
View Article and Find Full Text PDFRheumatol Ther
December 2024
University of Milan, Fondazione IRCCS Istituto Nazionale del Tumori, Milan, Italy.
Current literature regarding cancer risk in rheumatic and musculoskeletal diseases (RMDs) is particularly poor and controversial, even though the incidence of malignancy in some patients with RMDs is considered to be increased compared with the general population. Malignancy may be a major comorbidity in subjects with spondyloarthritis (SpA) as the result of multifactorial mechanisms, from disease pathogenesis to the iatrogenic effect of immunomodulating drugs. Several recommendations for screening and management of cancer risk have been developed in recent years with the aim of improving the different outcomes in these patients.
View Article and Find Full Text PDFMed Oncol
December 2024
Department of Bio-Sciences and Technology, MMEC, Maharishi Markandeshwar (Deemed to Be University), Mullana, India.
Gastrointestinal cancer is a malignant condition of the gastrointestinal tract (GI) which affect multi-organs of digestive system, such as esophagus, stomach, biliary system, pancreas, small intestine, large intestine, rectum, and anus. Gastrointestinal cancer is a 5th most common malignant cancer and 4th major cause in cancer-related mortality rate. Various significant facilities are available that have reduced the radio-resistance, chemo-resistance, and their adverse side effects.
View Article and Find Full Text PDFBiochem Genet
December 2024
College of Pharmacy, The Islamic University, Najaf, Iraq.
The long non-coding RNA Growth Arrest-Specific 5 (GAS5) is pivotal in modulating key signaling pathways by functioning as a molecular sponge for microRNAs (miRNAs). GAS5 is notably recognized for its antitumor properties, primarily through its ability to sequester oncogenic miRNAs, thereby influencing critical pathways such as p53, Wnt/β-catenin, and PI3K/Akt, all of which are integral to cell proliferation, apoptosis, and metastasis. The disruption of GAS5-miRNA interactions has been implicated in various malignancies, reinforcing its potential as both a biomarker and a therapeutic target.
View Article and Find Full Text PDFHum Cell
December 2024
Department of Gynecology, Jiangyin Hospital Affiliated to Nantong University, Wuxi, 214400, Jiangsu, People's Republic of China.
Curzerenone is a major component of the traditional herbal medicine Curcumae Rhizoma with potential cancer-suppressing effects. This study aims to investigate the treatment effect of Curzerenone on cervical cancer cells and the underpinning mechanism. HeLa and SiHa cells were treated with Curzerenone.
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