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https://www.readbyqxmd.com/read/29902537/nucleolin-is-expressed-in-patient-derived-samples-and-glioblastoma-cells-enabling-improved-intracellular-drug-delivery-and-cytotoxicity
#1
Joana Balça-Silva, Anália do Carmo, Hermínio Tão, Olinda Rebelo, Marcos Barbosa, Vivaldo Moura-Neto, Ana Bela Sarmento-Ribeiro, Maria Celeste Lopes, João Nuno Moreira
One of the major challenges in Glioblastoma (GBM) therapy relates with the existence of glioma stem-like cells (GSCs), known to be chemo- and radio-resistant. GSCs and non-stem GBM cells have the ability to interchange, emphasizing the importance of identifying common molecular targets among those cell sub-populations. Nucleolin overexpression has been recently associated with breast cancer sub-populations with different stem-like phenotype. The goal of this work was to evaluate the potential of cell surface nucleolin as a target in GBM cells...
June 11, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29848697/ampakines-attenuate-staurosporine-induced-cell-death-in-primary-cortical-neurons-implications-in-the-chemo-brain-phenomenon
#2
Daniel P Radin, Gary A Rogers, Kimberley E Hewitt, Richard Purcell, Arnold Lippa
BACKGROUND/AIM: Mounting evidence suggests that trophic cell signaling can be mediated by alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) activation. It has been demonstrated that exogenous application of brain-derived neurotrophic factor (BDNF) is highly neuroprotective in vitro against neurotoxic insults such as standard chemotherapies. MATERIALS AND METHODS: Because positive allosteric modulation of AMPARs with ampakines can increase both BDNF mRNA and protein in vitro and in vivo, we examined whether application of the ampakines CX614 and CX729 promoted neuroprotection against staurosporine-induced cell death in rat primary cortical neurons using propidium iodide to stain for dead cells...
June 2018: Anticancer Research
https://www.readbyqxmd.com/read/29845423/g6pd-as-a-predictive-marker-for-glioma-risk-prognosis-and-chemosensitivity
#3
Chin-An Yang, Hsi-Yuan Huang, Cheng-Li Lin, Jan-Gowth Chang
PURPOSE: Glucose-6-phosphate dehydrogenase (G6PD) is a key enzyme preventing cells from oxidative damage and has been reported to have tumor-promoting roles. This study aims to comprehensively evaluate the predictive values of G6PD on brain tumor risk, prognosis and chemo-resistance. METHODS: A retrospective 13-year cohort study analyzing cancer risk using the Taiwan National Health Insurance Research Database (4066 G6PD deficiency patients and 16,264 controls) was conducted...
May 29, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29793480/acid-sensing-ion-channels-dual-function-proteins-for-chemo-sensing-and-mechano-sensing
#4
REVIEW
Yuan-Ren Cheng, Bo-Yang Jiang, Chih-Cheng Chen
BACKGROUND: Acid-sensing ion channels (ASICs) are a group of amiloride-sensitive ligand-gated ion channels belonging to the family of degenerin/epithelial sodium channels. ASICs are predominantly expressed in both the peripheral and central nervous system and have been characterized as potent proton sensors to detect extracellular acidification in the periphery and brain. MAIN BODY: Here we review the recent studies focusing on the physiological roles of ASICs in the nervous system...
May 24, 2018: Journal of Biomedical Science
https://www.readbyqxmd.com/read/29747595/the-search-for-a-melanoma-tailored-chemotherapy-in-the-new-era-of-personalized-therapy-a-phase-ii-study-of-chemo-modulating-temozolomide-followed-by-fotemustine-and-a-cooperative-study-of-goim-gruppo-oncologico-italia-meridionale
#5
Michele Guida, Stefania Tommasi, Sabino Strippoli, Maria Iole Natalicchio, Simona De Summa, Rosamaria Pinto, Antonio Cramarossa, Anna Albano, Salvatore Pisconti, Michele Aieta, Ruggiero Ridolfi, Amalia Azzariti, Gabriella Guida, Vito Lorusso, Giusepe Colucci
BACKGROUND: It is frequently asked whether chemotherapy can still play a role in metastatic melanoma considering the effectiveness of the available drugs today, including antiCTLA4/antiPD1 immunotherapy and antiBRAF/antiMEK inhibitors. However, only approximately half of patients respond to these drugs, and the majority progress after 6-11 months. Therefore, a need for other therapeutic options is still very much apparent. We report the first large trial of a sequential full dose of fotemustine (FM) preceded by a low dose of temozolomide (TMZ) as a chemo-modulator in order to inactivate the DNA repair action of O(6)-methylguanine DNA-methyltransferase (MGMT)...
May 10, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29739361/two-successful-pregnancies-following-fertility-preservation-in-a-patient-with-anaplastic-astrocytoma-a-case-report
#6
Alexandra Peyser, Sara L Bristow, Avner Hershlag
BACKGROUND: Astrocytomas are the most common malignant glial tumors. With improved prognosis, it is possible for patients to pursue pregnancy post-treatment. However, with potential gonadotoxicity of oncology treatments, fertility preservation prior to chemotherapy and/or radiation therapy should be considered. This requires close collaboration between the oncologist and reproductive endocrinologist. To our knowledge this is the first report of successful pregnancies following fertility preservation for AA...
May 9, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29724813/egfrviii-stat5-signaling-enhances-glioblastoma-cell-migration-and-survival
#7
Alison Roos, Harshil D Dhruv, Sen Peng, Landon J Inge, Serdar Tuncali, Michael Pineda, Nghia Millard, Zachary Mayo, Jennifer M Eschbacher, Joseph C Loftus, Jeffrey A Winkles, Nhan L Tran
Glioblastoma multiforme (GBM) is the most common brain malignancies in adults. Most GBM patients succumb to the disease less than one year post-diagnosis due to the highly invasive nature of the tumor, which prevents complete surgical resection and gives rise to tumor recurrence. The invasive phenotype also confers radio- and chemo-resistant properties to the tumor cells; therefore, there is a critical need to develop new therapeutics that target drivers of GBM invasion. Amplification of EGFR is observed in over 50% of GBM tumors, of which half concurrently overexpress the variant EGFRvIII, and expression of both receptors confers a worse prognosis...
May 3, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29713762/prolonged-survival-in-secondary-glioblastoma-following-local-injection-of-targeted-alpha-therapy-with-213-bi-substance-p-analogue
#8
Leszek Krolicki, Frank Bruchertseifer, Jolanta Kunikowska, Henryk Koziara, Bartosz Królicki, Maciej Jakuciński, Dariusz Pawlak, Christos Apostolidis, Saed Mirzadeh, Rafał Rola, Adrian Merlo, Alfred Morgenstern
BACKGROUND: Glioblastoma multiforme (GBM), the most common malignant brain tumor, mainly manifests as a primary de novo and less frequently as a secondary glial neoplasm. GBM has been demonstrated to overexpress the NK-1 receptor and substance P can be used as a ligand for targeted therapy. Alpha emitters, e.g. 213 Bi, that deposit their high energy within a short range allow the selective irradiation of tumor cells while sparing adjacent neuronal structures. MATERIAL AND METHODS: Among 50 glioma patients of different subtypes that have to date been treated with targeted alpha therapy at the Medical University Warsaw, we report here the data on nine patients with secondary GBM...
April 30, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29594656/glioblastoma-gbm-effects-on-quantitative-mri-of-contralateral-normal-appearing-white-matter
#9
Hatef Mehrabian, Wilfred W Lam, Sten Myrehaug, Arjun Sahgal, Greg J Stanisz
PURPOSE: The objective was to investigate (with quantitative MRI) whether the normal appearing white matter (NAWM) of glioblastoma (GBM) patients on the contralateral side (cNAWM) was different from NAWM of healthy controls. METHODS: Thirteen patients with newly diagnosed GBM and nine healthy age-matched controls were MRI-scanned with quantitative magnetization transfer (qMT), chemical exchange saturation transfer (CEST), and transverse relaxation time (T2 )-mapping...
March 28, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29594238/retrospective-assessment-of-mri-based-volumetric-changes-of-normal-tissues-in-glioma-patients-following-radio-chemo-therapy
#10
Andreas Gommlich, Felix Raschke, Hannes Wahl, Esther G C Troost
In glioma patients, linac-based photon beam irradiation is a widely applied therapy, which achieves highly conformal target volume coverage, but is also known to cause side-effects to adjacent areas of healthy tissue. Apart from subjective measures, such as quality of life assessment and neurocognitive function tests, objective methods to quantify tissue damage are needed to assess this impact. Magnetic resonance imaging (MRI) is a well-established method for brain tumor diagnoses as well as assessing treatment response...
January 2018: Clinical and Translational Radiation Oncology
https://www.readbyqxmd.com/read/29559295/oligodendrocyte-progenitor-cells-and-macrophages-microglia-produce-glioma-stem-cell-niches-at-the-tumor-border
#11
Takuichiro Hide, Yoshihiro Komohara, Yuko Miyasato, Hideo Nakamura, Keishi Makino, Motohiro Takeya, Jun-Ichi Kuratsu, Akitake Mukasa, Shigetoshi Yano
Glioblastoma (GBM) usually develops in adult brain white matter. Even after complete resection, GBM recurs around the tumor removal cavity, where GBM cells acquire chemo-radioresistance. Characterization of the tumor border microenvironment is critical for improving prognosis in patients with GBM. Here, we compared microRNA (miRNA) expression in samples from the tumor, tumor border, and periphery by miRNA microarray. The top three of miRNAs showing higher expression in the tumor border were related to oligodendrocyte differentiation, and pathologically oligodendrocyte lineage cells were increased in the border, where macrophages and microglia also colocalized...
April 2018: EBioMedicine
https://www.readbyqxmd.com/read/29558958/a-highlight-on-sonic-hedgehog-pathway
#12
REVIEW
Gabriela Basile Carballo, Jéssica Ribeiro Honorato, Giselle Pinto Farias de Lopes, Tania Cristina Leite de Sampaio E Spohr
Hedgehog (Hh) signaling pathway plays an essential role during vertebrate embryonic development and tumorigenesis. It is already known that Sonic hedgehog (Shh) pathway is important for the evolution of radio and chemo-resistance of several types of tumors. Most of the brain tumors are resistant to chemotherapeutic drugs, consequently, they have a poor prognosis. So, a better knowledge of the Shh pathway opens an opportunity for targeted therapies against brain tumors considering a multi-factorial molecular overview...
March 20, 2018: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/29556248/growth-of-triple-negative-and-progesterone-positive-breast-cancer-causes-oxidative-stress-and-down-regulates-neuroprotective-transcription-factor-npas4-and-npas4-regulated-genes-in-hippocampal-tissues-of-tumorgraft-mice-an-aging-connection
#13
Anna Kovalchuk, Yaroslav Ilnytskyy, Rocio Rodriguez-Juarez, Amanda Katz, David Sidransky, Bryan Kolb, Olga Kovalchuk
While the refinement of existing and the development of new chemotherapeutic regimens has significantly improved cancer treatment outcomes and patient survival, chemotherapy still causes many persistent side effects. Central nervous system (CNS) toxicity is of particular concern, as cancer patients experience significant deficits in memory, learning, cognition, and decision-making. These chemotherapy-induced cognitive changes are termed chemo brain, and manifest in more than half of cancer survivors. Moreover, recent studies have emerged suggesting that neurocognitive deficits manifest prior to cancer diagnosis and treatment, and thus may be associated with tumor presence, a phenomenon recently termed "tumor brain...
2018: Frontiers in Genetics
https://www.readbyqxmd.com/read/29525720/targeting-metabotropic-glutamate-receptors-in-the-treatment-of-primary-brain-tumors
#14
REVIEW
Luisa Iacovelli, Rosamaria Orlando, Alessandro Rossi, Paola Spinsanti, Daniela Melchiorri, Ferdinando Nicoletti
In spite of the recent advancement in the molecular characterization of malignant gliomas and medulloblastomas, the treatment of primary brain tumors remains suboptimal. The use of small molecule inhibitors of intracellular signaling pathways, inhibitors of angiogenesis, and immunotherapic agents is limited by systemic adverse effects, limited brain penetration, and, in some cases, lack of efficacy. Thus, adjuvant chemo-therapy and radiotherapy still remain the gold standard in the treatment of grade-IV astrocytoma (glioblastoma multiforme) and medulloblastoma...
February 2018: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/29508242/dynamic-susceptibility-contrast-dsc-perfusion-mri-in-differential-diagnosis-between-radionecrosis-and-neoangiogenesis-in-cerebral-metastases-using-rcbv-rcbf-and-k2
#15
Mario Muto, Giulia Frauenfelder, Rossana Senese, Fabio Zeccolini, Emiliano Schena, Francesco Giurazza, Hans Rolf Jäger
INTRODUCTION: Distinction between treatment-related changes and tumour recurrence in patients who have received radiation treatment for brain metastases can be difficult on conventional MRI. In this study, we investigated the ability of dynamic susceptibility contrast (DSC) perfusion in differentiating necrotic changes from pathological angiogenesis and compared measurements of relative cerebral blood volume (rCBV), relative cerebral blood flow (rCBF) and K2, using a dedicated software...
March 5, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/29492900/a-hif-independent-cd133-mediated-mechanism-of-cisplatin-resistance-in-glioblastoma-cells
#16
Eroje M Ahmed, Gagori Bandopadhyay, Beth Coyle, Anna Grabowska
PURPOSE: Glioblastoma (GBM) is the commonest brain tumour in adults. A sub-population of cells within these tumours, known as cancer stem cells (CSCs), is thought to mediate their chemo-/radiotherapy resistance. CD133 is a cell surface marker that is used to identify and isolate GBM CSCs. However, its functional significance, as well as the relevant microenvironment in which to study CD133, have so far remained unknown. Here, we examined the effect of hypoxia on the expression of CD133 and on that of the hypoxia-related factors HIF-1α and HIF-2α, and the potential functional significance of CD133 expression on the acquisition of chemo-resistance by GBM cells...
June 2018: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/29492128/a-rare-case-of-concurrent-herpes-simplex-encephalitis-and-glioblastoma-multiforme
#17
Parag Sayal, Arif Zafar, Robin Highley
Herpes encephalitis superimposed on an intracranial malignancy has previously been described mainly in the context of malignancy imitating infection or in the postoperative setting after neurosurgical intervention. We report a rare case of de novo presentation of concurrent herpes encephalitis and glioblastoma. A 63-year-old man presented with status epilepticus and subsequent magnetic resonance imaging (MRI) brain showed a right temporal enhancing lesion with mass effect. He underwent a craniotomy and debulking of this lesion, which on subsequent histology was positive for herpes simplex virus (HSV) antigens and HSV DNA was confirmed by polymerase chain reaction analysis...
January 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29486569/-cor-occidere-a-novel-strategy-of-targeting-the-tumor-core-by-radiosurgery-in-a-radio-and-chemo-resistant-intracranial-hemangiopericytoma
#18
You Quan Li, Eu Tiong Chua, Kevin L M Chua, Melvin L K Chua
Intracranial hemangiopericytomas (HPC) are chemotherapy- and radiotherapy (RT)-resistant. Here, we report on a novel stereotactic radiosurgery (SRS) technique-"Cor Occidere" (Latin), as a potential strategy of overcoming radioresistance of HPC. A 36-year old female presented to our clinic for consideration of a 3rd-course of RT for her recurrent cavernous sinus HPC, following previous cranial RT at 13 and 5 years prior, and a failed 9 months trial of bevacizumab/temozolomide. The tumor-adjacent brain stem and carotid artery risked substantial damage given the cumulative RT doses to these organs...
February 2018: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/29454155/immune-checkpoint-inhibitors-in-non-small-cell-lung-cancer-nsclc-approaches-on-special-subgroups-and-unresolved-burning-questions
#19
REVIEW
J Remon, N Vilariño, N Reguart
Immune checkpoint inhibitors (ICIs) have been incorporated in the treatment strategy of advanced non-small cell lung cancer (NSCLC). Beyond the already approved indications in first- and second-line setting of advanced NSCLC, new data has recently emerged demonstrating its efficacy in locally advanced disease as maintenance after chemo-radiotherapy and currently several trials are also exploring its efficacy in earlier stages of the disease to evaluate whether these results could be extrapolated to the adjuvant setting...
March 2018: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/29399357/anticancer-effects-of-bilberry-anthocyanins-compared-with-nutrananosphere-encapsulated-bilberry-anthocyanins
#20
Seth P Thibado, Jerry T Thornthwaite, Thomas K Ballard, Brandon T Goodman
Rapidly accumulating laboratory and clinical research evidence indicates that anthocyanins exhibit anticancer activity and the evaluation of bilberry anthocyanins as chemo-preventive agents is progressing. It has previously been demonstrated that anthocyanins upregulate tumor suppressor genes, induce apoptosis in cancer cells, repair and protect genomic DNA integrity, which is important in reducing age-associated oxidative stress, and improve neuronal and cognitive brain function. Bilberry anthocyanins have pronounced health effects, even though they have a low bioavailability...
February 2018: Molecular and Clinical Oncology
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