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Mardanshahi A, Vaseghi S, Hosseinimehr SJ, Abedi SM, Molavipordanjani S. 99mTc(CO) 3-labeled 1-(2-Pyridyl)piperazine derivatives as radioligands for 5-HT 7 receptors. Ann Nucl Med 2024; 38:139-153. [PMID: 38032496 DOI: 10.1007/s12149-023-01885-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND The 5-hydroxytryptamine receptor (5-HTR) family includes seven classes of receptors. The 5-HT7R is the newest member of this family and contributes to different physiological and pathological processes. As a pathology, glioblastoma multiform (GBM) overexpresses 5-HT7R; hence, this study aims to develop radiolabeled aryl piperazine derivatives as 5-HT7R imaging agents. METHODS: Compounds 6 and 7 as 1-(3-nitropyridin-2-yl)piperazine derivatives were radiolabeled with fac-[99mTc(CO)3(H2O)3]+ and 99mTc(CO)3-[6] and 99mTc(CO)3-[7] were obtained with high radiochemical purity (RCP > 94%). The stability of the radiotracers was evaluated in both saline and mouse serum. Specific binding on different cell lines including U-87 MG, MCF-7, SKBR3, and HT-29 was performed. The biodistribution of these radiotracers was evaluated in normal and U-87 MG Xenografted models. Finally, 99mTc(CO)3-[6] and 99mTc(CO)3-[7] were applied for in vivo imaging in U-87 MG Xenografted models. RESULTS Specific binding study indicates that 99mTc(CO)3-[6] and 99mTc(CO)3-[7] can recognize 5-HT7R of U87-MG cell line. The biodistribution study in normal mice indicates that the brain uptake of 99mTc(CO)3-[6] and 99mTc(CO)3-[7] is the highest at 30 min post-injection (0.8 ± 0.25 and 0.64 ± 0.18%ID/g, respectively). The data of the biodistribution study in the U87-MG xenograft model revealed that these radiotracers could accumulate in the tumor site, and the highest tumor uptake was observed at 60 min post-injection (3.38 ± 0.65 and 3.27 ± 0.5%ID/g, respectively). The injection of pimozide can block the tumor's radiotracer uptake, indicating the binding of these radiotracers to the 5-HT7R. The imaging study in the xenograft model also confirms the biodistribution data. The acquired images clearly show the tumor site, and the tumor-to-muscle ratio for 99mTc(CO)3-[6] and 99mTc(CO)3-[7] at 60 min was 3.33 and 3.88, respectively. CONCLUSIONS: 99mTc(CO)3-[6] and 99mTc(CO)3-[7] can visualize tumor in the U87-MG xenograft model due to their affinity toward 5-HT7R.
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Affiliation(s)
- Alireza Mardanshahi
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Cardiovascular Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Samaneh Vaseghi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Seyed Jalal Hosseinimehr
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyed Mohammad Abedi
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Cardiovascular Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sajjad Molavipordanjani
- Pharmaceutical Sciences Research Center, Hemoglobinopathy Institute, Mazandaran University of Medical Sciences, Sari, Iran.
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Karimi M, Mardanshahi A, Irannejad H, Mohammad Abedi S, Molavipordanjani S. Synthesis and evaluation of 99mTc-labeled 1-(2-Pyridyl)piperazine derivatives as radioligands for 5HT 7 receptors. Bioorg Chem 2023; 135:106486. [PMID: 36965286 DOI: 10.1016/j.bioorg.2023.106486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/07/2023] [Accepted: 03/17/2023] [Indexed: 03/27/2023]
Abstract
Glioblastoma multiform (GBM) is one of the most aggressive tumors of the central nervous system in humans. GBM overexpresses serotonin-7 receptors (5-HT7Rs); hence, this study aims to develop 5-HT7R targeted radiotracers. Aryl piperazine derivatives can act as ligands for 5-HT7R. Therefore, compounds 6 and 7 as 1-(3-nitropyridin-2-yl)piperazine derivatives were synthesized and radiolabeled with 99mTcN2+ core. Radiolabeled 6 and 7 (99mTcN-[6] and 99mTcN-[7]) were prepared with high radiochemical purity (RCP > 96%). They displayed high affinity toward U-87 MG cell line 5-HT7R. The calculated Ki for 99mTcN-[7] was lower than that of 99mTcN-[6] (14.85 ± 0.32 vs 22.57 ± 0.73 nM) which indicates the higher affinity of 99mTcN-[7] toward 5-HT7R. A molecular docking study also confirmed the binding of these radiotracers to 5-HT7R. The biodistribution study in normal mice revealed that 99mTcN-[7] has the highest brain accumulation at 30 min post-injection (0.54 ± 0.12 %ID/g) while the uptake of 99mTcN-[6] is much lower (0.14 ± 0.02 %ID/g). The biodistribution study in the xenograft model confirms that the radiotracers recognize the tumor site. 99mTcN-[6], and 99mTcN-[7] showed the highest tumor uptake at 1-hour post-injection (5.44 ± 0.58 vs 4.94 ± 1.65 %ID/g) and tumor-to-muscle ratios were (4.61 vs. 5.61). The injection of pimozide blocks the receptors and significantly reduces the tumor-to-muscle ratios at 1-hour post-injection to 0.81 and 0.31, respectively. In correlation with in vitro study, 99mTcN-[6] and 99mTcN-[7] visualize the tumor site in U-87 MG glioma xenografted nude mice and display the tumor-to-muscle ratios of 7.05 and 6.03.
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Affiliation(s)
- Maryam Karimi
- Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Alireza Mardanshahi
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hamid Irannejad
- Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyed Mohammad Abedi
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sajjad Molavipordanjani
- Pharmaceutical Sciences Research Center, Hemoglobinopathy Institute, Mazandaran University of Medical Sciences, Sari, Iran.
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Hashemi M, Rashidi M, Hushmandi K, Ten Hagen TLM, Salimimoghadam S, Taheriazam A, Entezari M, Falahati M. HMGA2 regulation by miRNAs in cancer: affecting cancer hallmarks and therapy response. Pharmacol Res 2023; 190:106732. [PMID: 36931542 DOI: 10.1016/j.phrs.2023.106732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
High mobility group A 2 (HMGA2) is a protein that modulates the structure of chromatin in the nucleus. Importantly, aberrant expression of HMGA2 occurs during carcinogenesis, and this protein is an upstream mediator of cancer hallmarks including evasion of apoptosis, proliferation, invasion, metastasis, and therapy resistance. HMGA2 targets critical signaling pathways such as Wnt/β-catenin and mTOR in cancer cells. Therefore, suppression of HMGA2 function notably decreases cancer progression and improves outcome in patients. As HMGA2 is mainly oncogenic, targeting expression by non-coding RNAs (ncRNAs) is crucial to take into consideration since it affects HMGA2 function. MicroRNAs (miRNAs) belong to ncRNAs and are master regulators of vital cell processes, which affect all aspects of cancer hallmarks. Long ncRNAs (lncRNAs) and circular RNAs (circRNAs), other members of ncRNAs, are upstream mediators of miRNAs. The current review intends to discuss the importance of the miRNA/HMGA2 axis in modulation of various types of cancer, and mentions lncRNAs and circRNAs, which regulate this axis as upstream mediators. Finally, we discuss the effect of miRNAs and HMGA2 interactions on the response of cancer cells to therapy. Regarding the critical role of HMGA2 in regulation of critical signaling pathways in cancer cells, and considering the confirmed interaction between HMGA2 and one of the master regulators of cancer, miRNAs, targeting miRNA/HMGA2 axis in cancer therapy is promising and this could be the subject of future clinical trial experiments.
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Affiliation(s)
- Mehrdad Hashemi
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Mohsen Rashidi
- Department Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, 4815733971, Iran; The Health of Plant and Livestock Products Research Center, Mazandaran University of Medical Sciences, Sari, 4815733971, Iran.
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
| | - Timo L M Ten Hagen
- Precision Medicine in Oncology (PrMiO), Department of Pathology, Erasmus MC Cancer Institute, Erasmus MC, Rotterdam, the Netherlands.
| | - Shokooh Salimimoghadam
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Afshin Taheriazam
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Orthopedics, Faculty of medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Maliheh Entezari
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Mojtaba Falahati
- Precision Medicine in Oncology (PrMiO), Department of Pathology, Erasmus MC Cancer Institute, Erasmus MC, Rotterdam, the Netherlands.
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Webber DM, Li M, MacLeod SL, Tang X, Levy JW, Karim MA, Erickson SW, Hobbs CA. Gene-Folic Acid Interactions and Risk of Conotruncal Heart Defects: Results from the National Birth Defects Prevention Study. Genes (Basel) 2023; 14:genes14010180. [PMID: 36672920 PMCID: PMC9859210 DOI: 10.3390/genes14010180] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/29/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Conotruncal heart defects (CTDs) are heart malformations that affect the cardiac outflow tract and typically cause significant morbidity and mortality. Evidence from epidemiological studies suggests that maternal folate intake is associated with a reduced risk of heart defects, including CTD. However, it is unclear if folate-related gene variants and maternal folate intake have an interactive effect on the risk of CTDs. In this study, we performed targeted sequencing of folate-related genes on DNA from 436 case families with CTDs who are enrolled in the National Birth Defects Prevention Study and then tested for common and rare variants associated with CTD. We identified risk alleles in maternal MTHFS (ORmeta = 1.34; 95% CI 1.07 to 1.67), maternal NOS2 (ORmeta = 1.34; 95% CI 1.05 to 1.72), fetal MTHFS (ORmeta = 1.35; 95% CI 1.09 to 1.66), and fetal TCN2 (ORmeta = 1.38; 95% CI 1.12 to 1.70) that are associated with an increased risk of CTD among cases without folic acid supplementation. We detected putative de novo mutations in genes from the folate, homocysteine, and transsulfuration pathways and identified a significant association between rare variants in MGST1 and CTD risk. Results suggest that periconceptional folic acid supplementation is associated with decreased risk of CTD among individuals with susceptible genotypes.
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Affiliation(s)
- Daniel M. Webber
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Ming Li
- Department of Epidemiology and Biostatistics, Indiana University at Bloomington, Bloomington, IN 47405, USA
| | - Stewart L. MacLeod
- Division of Birth Defects Research, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Xinyu Tang
- Biostatistics Program, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Joseph W. Levy
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI 48202, USA
| | - Mohammad A. Karim
- Department of Child Health, College of Medicine, University of Arizona, Phoenix, AZ 85004, USA
- Department of Neurology, Sections on Neurodevelopmental Disorders, Barrow Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ 85016, USA
| | - Stephen W. Erickson
- Center for Genomics in Public Health and Medicine, RTI International, Research Triangle Park, NC 27709, USA
| | - Charlotte A. Hobbs
- Rady Children’s Institute for Genomic Medicine, Rady Children’s Hospital, San Diego, CA 92123, USA
- Correspondence:
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Maksoud S. The DNA Double-Strand Break Repair in Glioma: Molecular Players and Therapeutic Strategies. Mol Neurobiol 2022; 59:5326-5365. [PMID: 35696013 DOI: 10.1007/s12035-022-02915-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 06/05/2022] [Indexed: 12/12/2022]
Abstract
Gliomas are the most frequent type of tumor in the central nervous system, which exhibit properties that make their treatment difficult, such as cellular infiltration, heterogeneity, and the presence of stem-like cells responsible for tumor recurrence. The response of this type of tumor to chemoradiotherapy is poor, possibly due to a higher repair activity of the genetic material, among other causes. The DNA double-strand breaks are an important type of lesion to the genetic material, which have the potential to trigger processes of cell death or cause gene aberrations that could promote tumorigenesis. This review describes how the different cellular elements regulate the formation of DNA double-strand breaks and their repair in gliomas, discussing the therapeutic potential of the induction of this type of lesion and the suppression of its repair as a control mechanism of brain tumorigenesis.
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Affiliation(s)
- Semer Maksoud
- Experimental Therapeutics and Molecular Imaging Unit, Department of Neurology, Neuro-Oncology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
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An NF-κB- and Therapy-Related Regulatory Network in Glioma: A Potential Mechanism of Action for Natural Antiglioma Agents. Biomedicines 2022; 10:biomedicines10050935. [PMID: 35625673 PMCID: PMC9138293 DOI: 10.3390/biomedicines10050935] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/14/2022] [Accepted: 04/17/2022] [Indexed: 01/27/2023] Open
Abstract
High-grade gliomas are among the most aggressive malignancies, with significantly low median survival. Recent experimental research in the field has highlighted the importance of natural substances as possible antiglioma agents, also known for their antioxidant and anti-inflammatory action. We have previously shown that natural substances target several surface cluster of differentiation (CD) markers in glioma cells, as part of their mechanism of action. We analyzed the genome-wide NF-κB binding sites residing in consensus regulatory elements, based on ENCODE data. We found that NF-κB binding sites reside adjacent to the promoter regions of genes encoding CD markers targeted by antiglioma agents (namely, CD15/FUT4, CD28, CD44, CD58, CD61/SELL, CD71/TFRC, and CD122/IL2RB). Network and pathway analysis revealed that the markers are associated with a core network of genes that, altogether, participate in processes that associate tumorigenesis with inflammation and immune evasion. Our results reveal a core regulatory network that can be targeted in glioblastoma, with apparent implications in individuals that suffer from this devastating malignancy.
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Cirsilineol inhibits cell growth and induces apoptosis in glioma C6 cells via inhibiting MAPK and PI3K/Akt/mTOR signaling pathways. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-021-02229-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Li Z, Luo Z, Sun Y. Robust nonparametric integrative analysis to decipher heterogeneity and commonality across subgroups using sparse boosting. Stat Med 2022; 41:1658-1687. [PMID: 35072291 DOI: 10.1002/sim.9322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 11/20/2021] [Accepted: 01/03/2022] [Indexed: 11/09/2022]
Abstract
In many biomedical problems, data are often heterogeneous, with samples spanning multiple patient subgroups, where different subgroups may have different disease subtypes, stages, or other medical contexts. These subgroups may be related, but they are also expected to have differences with respect to the underlying biology. The heterogeneous data presents a precious opportunity to explore the heterogeneities and commonalities between related subgroups. Unfortunately, effective statistical analysis methods are still lacking. Recently, several novel methods based on integrative analysis have been proposed to tackle this challenging problem. Despite promising results, the existing studies are still limited by ignoring data contamination and making strict assumptions of linear effects of covariates on response. As such, we develop a robust nonparametric integrative analysis approach to identify heterogeneity and commonality, as well as select important covariates and estimate covariate effects. Possible data contamination is accommodated by adopting the Cauchy loss function, and a nonparametric model is built to accommodate nonlinear effects. The proposed approach is based on a sparse boosting technique. The advantages of the proposed approach are demonstrated in extensive simulations. The analysis of The Cancer Genome Atlas data on glioblastoma multiforme and lung adenocarcinoma shows that the proposed approach makes biologically meaningful findings with satisfactory prediction.
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Affiliation(s)
- Zihan Li
- Center for Applied Statistics, School of Statistics, Renmin University of China, Beijing, China
| | - Ziye Luo
- Center for Applied Statistics, School of Statistics, Renmin University of China, Beijing, China
| | - Yifan Sun
- Center for Applied Statistics, School of Statistics, Renmin University of China, Beijing, China
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Lianos GD, Alexiou GA, Rausei S, Galani V, Mitsis M, Kyritsis AP. Repurposing antipsychotic drugs for cancer treatment: current evidence and future perspectives. Expert Rev Anticancer Ther 2021; 22:131-134. [PMID: 34612130 DOI: 10.1080/14737140.2022.1987221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Georgios D Lianos
- Department of Surgery, University Hospital of Ioannina, Ioannina, Greece
| | - George A Alexiou
- Department of Neurosurgery, University Hospital of Ioannina, Ioannina, Greece
| | - Stefano Rausei
- Department of Surgery, ASST Valle Olona, Gallarate, Italy
| | - Vasiliki Galani
- Neurosurgical Institute, University of Ioannina, Ioannina, Greece
| | - Michail Mitsis
- Department of Surgery, University Hospital of Ioannina, Ioannina, Greece
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Roshdy E, ElNaggar M, Atta H, Kandeel A, Abdel-Wanis M, Abd Elbadee OM, Abdelhafez YG, Mohamed Y. Role of post-therapy 99mTc-MIBI single-photon emission computed tomography/computed tomography scan in predicting survival in patients with high-grade glioma. Nucl Med Commun 2021; 42:625-632. [PMID: 33625186 DOI: 10.1097/mnm.0000000000001385] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE High-grade gliomas (HGGs) carry dismal prognosis with survival typically reported as less than a year. We explored the predictive value of qualitative and quantitative evaluations of post-treatment 99m-technetium-labelled methoxyisobutylisonitrile (99mmTc-MIBI) brain single-photon emission computed tomography-computed tomography (SPECT/CT) tumor uptake in relation to overall survival (OS) in patients with HGG. METHODS Thirty patients with pathologically or radiologically documented high-grade glioma (HGG) were prospectively recruited for this study (24 male, 6 female; mean age 43 ± 14 years). All patients had a clinical or radiological suspicion of residual/recurrent tumor after initial therapy. 99mTc-MIBI brain SPECT/CT scanning was performed, and the scans were evaluated qualitatively on a five-point probability score (1-5, scores ≥3 considered positive for residual/recurrent tumor); and quantitively via drawing volumes of interest (VOI) on the suspected lesions and normal contralateral brain tissue. All patients were followed up for 1 year or till death. RESULTS Positive visual MIBI results were associated with poor survival. Among 10 patients with negative MIBI scores, only two patients died (OS = 75%), while 11/20 patients reported positive on MIBI died, with a median survival of 9 months (OS = 14.5%; P = 0.03). All patients with active isocontour volume ≤1.96 cm3 were alive at the end of the study, compared to a median survival of 9 months and OS of 12% for patients with an isocontour volume of >1.97% (P = 0.003). CONCLUSION In patients with HGG, post-therapy brain SPECT/CT with 99mTc-MIBI can provide useful prognostic information.
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Affiliation(s)
- Esraa Roshdy
- Nuclear Medicine Unit, Radiation Oncology and Nuclear Medicine Department, South Egypt Cancer Institute
| | - Maha ElNaggar
- Department of Clinical Oncology, Faculty of Medicine
| | - Haisam Atta
- Department of Radiology, South Egypt Cancer Institute
| | - Ahmed Kandeel
- Nuclear Medicine Unit, Clinical Oncology and Nuclear Medicine Department, Faculty of Medicine, Cairo University, Cairo
| | - Mostafa Abdel-Wanis
- Radiation Oncology and Nuclear Medicine Department, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
| | - Osama Mostafa Abd Elbadee
- Radiation Oncology and Nuclear Medicine Department, South Egypt Cancer Institute, Assiut University, Assiut, Egypt
| | - Yasser G Abdelhafez
- Nuclear Medicine Unit, Radiation Oncology and Nuclear Medicine Department, South Egypt Cancer Institute
- Department of Radiology, University of California Davis, Sacramento, California, USA
| | - Yasser Mohamed
- Nuclear Medicine Unit, Clinical Oncology and Nuclear Medicine Department, Faculty of Medicine, Cairo University, Cairo
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Saednia S, Emami S, Molavipordanjani S, Abedi SM, Amiri FT, Hosseinimehr SJ. Synthesis and Biological Evaluation of 99mTc-Labeled Phenylpiperazine Derivatives as Selective Serotonin-7 Receptor Ligands for Brain Tumor Imaging. Mol Pharm 2021; 18:2360-2374. [PMID: 34027660 DOI: 10.1021/acs.molpharmaceut.1c00172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
With a poor prognosis, glioblastoma multiforme is the most aggressive tumor of the central nervous system in humans. The aim of this study was to develop novel tracers for the tumor targeting and imaging of overexpressed serotonin-7 receptors (5-HT7Rs) in U-87 MG glioma xenografted nude mice. Two phenylpiperazine derivatives named as PHH and MPHH were designed, and the corresponding radiotracers 99mTc-PHH and 99mTc-MPHH were synthesized in high radiochemical purity (>95%). 99mTc-MPHH showed a higher affinity to 5-HT7Rs on U-87 MG cells compared to 99mTc-PHH. In biodistribution studies, the radiocomplexes showed good brain uptake at 15 min combined with good radioactivity retention in the brain for 240 min. Regional rabbit brain studies indicated a higher radioactivity concentration in the hippocampus and diencephalon than in the cerebellum. Compared to 99mTc-MPHH, the 99mTc-PHH exhibited a significantly increased tumor uptake at 15 and 60 min, but the rapid blood clearance of 99mTc-MPHH led to enhanced tumor-to-muscle ratios at 240 min. A significant reduction in tumor uptake 60 min after an injection of pimozide (5-HT7 receptor antagonist) confirms the tumor uptake was receptor-mediated specifically. The tumor-to-contralateral muscle tissue ratio of 99mTc-PHH and 99mTc-MPHH in nude mice with U-87 MG xenograft was measured (5.25 and 4.65) at 60 min as well as (6.25 and 6.76) at 240 min, respectively.
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Affiliation(s)
- Shahnaz Saednia
- Department of Radiopharmacy, Faculty of Pharmacy, Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran.,Student Research Committee, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saeed Emami
- Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Sajjad Molavipordanjani
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyed Mohammad Abedi
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Seyed Jalal Hosseinimehr
- Department of Radiopharmacy, Faculty of Pharmacy, Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
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Montazeri-Najababady N, Dabbaghmanesh MH, Nasimi N, Sohrabi Z, Chatrabnous N. The association between TP53 rs1625895 polymorphism and the risk of sarcopenic obesity in Iranian older adults: a case-control study. BMC Musculoskelet Disord 2021; 22:438. [PMID: 33985476 PMCID: PMC8120782 DOI: 10.1186/s12891-021-04314-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/30/2021] [Indexed: 01/30/2023] Open
Abstract
Background Aging and obesity are the two major global health concerns. Sarcopenia, an age-linked disease, wherein a progressive loss of muscle volume, muscle strength, and physical activity occurs. In this study we evaluated the association of TP53 rs1625895 polymorphism with the susceptibility to sarcopenic obesity in Iranian old-age subjects. Methods Total of 176 old individuals (45 sarcopenic and 131 healthy) were recruited in this research and genotyped by PCR–RFLP. BMI, Skeletal Muscle Mass Index, body composition, Handgrip Strength, Gait Speed (GS), and biochemical parameters were measured. Chi-square test was done for genotypes and alleles frequency. Linear regression was applied to find the correlation between TP53 rs1625895 polymorphism, and biochemical and anthropometric parameters. The correlation between TP53 rs1625895 and the risk of sarcopenia and sarcopenic obesity was investigated by logistic regression. Results G allele was significantly higher in sarcopenic obesity group [P = 0.037, OR (CI 95%) = 1.9 (1.03–3.5)] compared to A allele. BMI (P = 0.049) and LDL (P = 0.04) were significantly differed between genotypes when GG was compared to AA/AG genotype. The results revealed when GG genotype compared to AA/AG genotype in adjusted model for age, the risk of sarcopenic obesity [P value = 0.011, OR (CI 95%); 2.72 (1.25–5.91)] increased. Similarly, GG/AG genotype increased the risk of sarcopenic obesity [P value = 0.028, OR (CI 95%); 2.43 (1.10–5.36)] in adjusted model for age compared to AA genotype. Conclusions We suggested that TP53 rs1625895 polymorphism may increase the risk of sarcopenic obesity in Iranian population.
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Affiliation(s)
| | | | - Nasrin Nasimi
- Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Sohrabi
- Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nazanin Chatrabnous
- Endocrinology and Metabolism Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Vartholomatos E, Vartholomatos G, Alexiou GA, Markopoulos GS. The Past, Present and Future of Flow Cytometry in Central Nervous System Malignancies. Methods Protoc 2021; 4:mps4010011. [PMID: 33530325 PMCID: PMC7839046 DOI: 10.3390/mps4010011] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 01/22/2021] [Accepted: 01/22/2021] [Indexed: 02/06/2023] Open
Abstract
Central nervous system malignancies (CNSMs) are categorized among the most aggressive and deadly types of cancer. The low median survival in patients with CNSMs is partly explained by the objective difficulties of brain surgeries as well as by the acquired chemoresistance of CNSM cells. Flow Cytometry is an analytical technique with the ability to quantify cell phenotype and to categorize cell populations on the basis of their characteristics. In the current review, we summarize the Flow Cytometry methodologies that have been used to study different phenotypic aspects of CNSMs. These include DNA content analysis for the determination of malignancy status and phenotypic characterization, as well as the methodologies used during the development of novel therapeutic agents. We conclude with the historical and current utility of Flow Cytometry in the field, and we propose how we can exploit current and possible future methodologies in the battle against this dreadful type of malignancy.
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Affiliation(s)
- Evrysthenis Vartholomatos
- Faculty of Medicine, Neurosurgical Institute, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece; (E.V.); (G.A.A.)
| | - George Vartholomatos
- Haematology Laboratory-Unit of Molecular Biology, University Hospital of Ioannina, 45110 Ioannina, Greece;
| | - George A. Alexiou
- Faculty of Medicine, Neurosurgical Institute, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece; (E.V.); (G.A.A.)
- Department of Neurosurgery, University of Ioannina, 45110 Ioannina, Greece
| | - Georgios S. Markopoulos
- Faculty of Medicine, Neurosurgical Institute, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece; (E.V.); (G.A.A.)
- Haematology Laboratory-Unit of Molecular Biology, University Hospital of Ioannina, 45110 Ioannina, Greece;
- Correspondence:
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Haloperidol Induced Cell Cycle Arrest and Apoptosis in Glioblastoma Cells. Biomedicines 2020; 8:biomedicines8120595. [PMID: 33322363 PMCID: PMC7763579 DOI: 10.3390/biomedicines8120595] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 12/18/2022] Open
Abstract
Although several antipsychotic drugs have been shown to possess anticancer activities, haloperidol, a “first-generation” antipsychotic drug, has not been extensively evaluated for potential antineoplastic properties. The aim of this study was to investigate the antitumoral effects of haloperidol in glioblastoma (GBM) U87, U251 and T98 cell lines, and the effects of combined treatment with temozolomide (TMZ) and/or radiotherapy, using 4 Gy of irradiation. The viability and proliferation of the cells were evaluated with trypan blue exclusion assay and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Apoptosis, using the annexin-propidium iodide (PI), and cell cycle, cluster of differentiation (CD) expression and caspase-8 activation were measured using flow cytometry. Treatment with haloperidol significantly reduced cell viability in U87, U251 and T98 GBM cell lines. Haloperidol induced apoptosis in a dose-dependent manner, inhibited cell migration and produced an alteration in the expression of CD24/CD44. The additional effect of haloperidol, combined with temozolomide and radiation therapy, increased tumor cell death. Haloperidol was observed to induce apoptosis and to increase caspase-8 activation. In conclusion, haloperidol may represent an innovative strategy for the treatment of GBM and further studies are warranted in glioma xenograft models and other malignancies.
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Tsakiris C, Siempis T, Alexiou GA, Zikou A, Sioka C, Voulgaris S, Argyropoulou MI. Differentiation Between True Tumor Progression of Glioblastoma and Pseudoprogression Using Diffusion-Weighted Imaging and Perfusion-Weighted Imaging: Systematic Review and Meta-analysis. World Neurosurg 2020; 144:e100-e109. [DOI: 10.1016/j.wneu.2020.07.218] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 01/08/2023]
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Cheng J, Zhuo Z, Yang L, Zhao P, Zhang J, Zhou H, He J, Li P. HMGA2 gene polymorphisms and Wilms tumor susceptibility in Chinese children: a four-center case-control study. Biotechnol Appl Biochem 2020; 67:939-945. [PMID: 31746066 DOI: 10.1002/bab.1857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 11/14/2019] [Indexed: 02/05/2023]
Abstract
Wilms tumor is a kidney malignancy that typically occurs in children. Aberrant expression of HMGA2 gene is commonly seen in many malignant tumors. Yet, HMGA2 gene polymorphisms on Wilms tumor risk are not established. We carried out the first four-center case-control study with 355 patients and 1,070 controls to assess the association of HMGA2 polymorphisms (rs6581658 A>G, rs8756 A>C, and rs968697 T>C) with Wilms tumor risk. All of these three polymorphisms in single could not impact Wilms tumor risk. Stratified analysis revealed a contributing Wilms tumor risk role of rs968697 TC/CC in subgroup of male (TC/CC vs. TT: adjusted odds ratio [OR] = 1.46, 95% confidence interval [CI] = 1.03-2.08, P = 0.035). However, we found that presence of 1-3 protective genotypes were less likely to develop tumor in subgroup of female (adjusted OR = 0.69, 95% CI = 0.48-0.99, P = 0.045). Our findings suggest that HMGA2 gene polymorphisms might influence Wilms tumor predisposition in a weak manner, under certain circumstances.
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Affiliation(s)
- Jiwen Cheng
- Department of Pediatric Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhenjian Zhuo
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Liu Yang
- Clinical Laboratory Medicine Center of PLA, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Pu Zhao
- Department of Neonatology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, China
| | - Jiao Zhang
- Department of Pediatric Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Haixia Zhou
- Department of Hematology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jing He
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Peng Li
- Department of Pediatric Surgery, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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Dhar S, Datta A, Brosh RM. DNA helicases and their roles in cancer. DNA Repair (Amst) 2020; 96:102994. [PMID: 33137625 DOI: 10.1016/j.dnarep.2020.102994] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 12/15/2022]
Abstract
DNA helicases, known for their fundamentally important roles in genomic stability, are high profile players in cancer. Not only are there monogenic helicase disorders with a strong disposition to cancer, it is well appreciated that helicase variants are associated with specific cancers (e.g., breast cancer). Flipping the coin, DNA helicases are frequently overexpressed in cancerous tissues and reduction in helicase gene expression results in reduced proliferation and growth capacity, as well as DNA damage induction and apoptosis of cancer cells. The seminal roles of helicases in the DNA damage and replication stress responses, as well as DNA repair pathways, validate their vital importance in cancer biology and suggest their potential values as targets in anti-cancer therapy. In recent years, many laboratories have characterized the specialized roles of helicase to resolve transcription-replication conflicts, maintain telomeres, mediate cell cycle checkpoints, remodel stalled replication forks, and regulate transcription. In vivo models, particularly mice, have been used to interrogate helicase function and serve as a bridge for preclinical studies that may lead to novel therapeutic approaches. In this review, we will summarize our current knowledge of DNA helicases and their roles in cancer, emphasizing the latest developments.
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Affiliation(s)
- Srijita Dhar
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Arindam Datta
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Robert M Brosh
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
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RTEL1 suppresses G-quadruplex-associated R-loops at difficult-to-replicate loci in the human genome. Nat Struct Mol Biol 2020; 27:424-437. [PMID: 32398827 DOI: 10.1038/s41594-020-0408-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 02/26/2020] [Indexed: 12/14/2022]
Abstract
Oncogene activation during tumorigenesis generates DNA replication stress, a known driver of genome rearrangements. In response to replication stress, certain loci, such as common fragile sites and telomeres, remain under-replicated during interphase and subsequently complete locus duplication in mitosis in a process known as 'MiDAS'. Here, we demonstrate that RTEL1 (regulator of telomere elongation helicase 1) has a genome-wide role in MiDAS at loci prone to form G-quadruplex-associated R-loops, in a process that is dependent on its helicase function. We reveal that SLX4 is required for the timely recruitment of RTEL1 to the affected loci, which in turn facilitates recruitment of other proteins required for MiDAS, including RAD52 and POLD3. Our findings demonstrate that RTEL1 is required for MiDAS and suggest that RTEL1 maintains genome stability by resolving conflicts that can arise between the replication and transcription machineries.
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Li L, Zhuo Z, Yang Z, Zhu J, He X, Yang Z, Zhang J, Xin Y, He J, Zhang T. HMGA2 Polymorphisms and Hepatoblastoma Susceptibility: A Five-Center Case-Control Study. Pharmgenomics Pers Med 2020; 13:51-57. [PMID: 32104047 PMCID: PMC7023882 DOI: 10.2147/pgpm.s241100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 02/04/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Hepatoblastoma is a rare disease. Its etiology remains obscure. No epidemiological reports have assessed the relationship of High Mobility Group A2 (HMGA2) single nucleotide polymorphisms (SNPs) with hepatoblastoma risk. This case-control study leads as a pioneer to explore whether HMGA2 SNPs (rs6581658 A>G, rs8756 A>C, rs968697 T>C) could impact hepatoblastoma risk. METHODS We acquired samples from 275 hepatoblastoma cases and 1018 controls who visited one of five independent hospitals located in the different regions of China. The genotyping of HMGA2 SNPs was implemented using the PCR-based TaqMan method, and the risk estimates were quantified by odds ratios (ORs) and 95% confidence intervals (CIs). RESULTS In the main analysis, we identified that rs968697 T>C polymorphism was significantly related to hepatoblastoma risk in the additive model (adjusted OR=0.73, 95% CI=0.54-0.98, P=0.035). Notably, participants carrying 2-3 favorable genotypes had reduced hepatoblastoma risk (adjusted OR=0.71, 95% CI=0.52-0.96, P=0.028) in contrast to those carrying 0-1 favorable genotypes. Furthermore, stratification analysis revealed a significant correlation between rs968697 TC/CC and hepatoblastoma risk for males and clinical stage I+II. The existence of 2-3 protective genotypes was correlated with decreased hepatoblastoma susceptibility in children ≥17 months old, males, and clinical stage I+II cases, when compared to 0-1 protective genotype. CONCLUSION To summarize, these results indicated that the HMGA2 gene SNPs exert a weak influence on hepatoblastoma susceptibility. Further validation of the current conclusion with a larger sample size covering multi-ethnic groups is warranted.
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Affiliation(s)
- Li Li
- Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, Kunming, Yunnan, 650228, People’s Republic of China
| | - Zhenjian Zhuo
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou510623, Guangdong, People’s Republic of China
| | - Zhen Yang
- Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, Kunming, Yunnan, 650228, People’s Republic of China
- Department of Oncology, Kunming Children’s Hospital, Kunming650228, Yunnan, People’s Republic of China
| | - Jinhong Zhu
- Department of Clinical Laboratory, Biobank, Harbin Medical University Cancer Hospital, Harbin150040, Heilongjiang, People’s Republic of China
| | - Xiaoli He
- Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, Kunming, Yunnan, 650228, People’s Republic of China
| | - Zhonghua Yang
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang110004, Liaoning, People’s Republic of China
| | - Jiao Zhang
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou450052, Henan, People’s Republic of China
| | - Yijuan Xin
- Clinical Laboratory Medicine Center of PLA, Xijing Hospital, Air Force Medical University, Xi’an710032, Shaanxi, People’s Republic of China
| | - Jing He
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou510623, Guangdong, People’s Republic of China
- Jing He Department of Pediatric, Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, 9 Jinsui Road, Guangzhou510623, Guangdong, People’s Republic of ChinaTel/Fax +86 2038076560 Email
| | - Tiesong Zhang
- Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, Kunming, Yunnan, 650228, People’s Republic of China
- Correspondence: Tiesong Zhang Kunming Key Laboratory of Children's Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics Research, Kunming Children’s Hospital, 288 Qianxing Road, Kunming650228, Yunnan, People’s Republic of ChinaTel/Fax +86 –8713169969 Email
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Vartholomatos E, Alexiou GA, Markopoulos GS, Lazari D, Tsiftsoglou O, Chousidis I, Leonardos I, Kyritsis AP. Deglucohellebrin: A Potent Agent for Glioblastoma Treatment. Anticancer Agents Med Chem 2019; 20:103-110. [PMID: 31755397 DOI: 10.2174/1871520619666191121110848] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/18/2019] [Accepted: 10/18/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND Glioblastoma is the most common primary brain tumor in adults with a dismal prognosis. To date, several anticancer agents have been isolated from plants. Helleborus odorus subsp. Cyclophyllus is an endemic plant of the Balcan flora. Herewith, we investigated for the first time, the anti-glioma effect of deglucohellebrin (DGH) extracted from the roots of Helleborus. METHODS We investigated the effect of DGH in U251MG, T98G and U87G glioblastoma cell lines. We selected the T98G cells because of their inherent temozolomide resistance. RESULTS The IC50 value of reduced viability for DGH was 7x10-5M in U251MG cells, 5x10-5M for the T98G cells and 4x10-5M in U87G cells during 72h treatment. DGH induced G2/M cell cycle arrest, caspace-8 activation and significant mitochondrial membrane depolarization, suggesting the activation of the intrinsic, mitochondrial- dependent apoptotic pathway. DGH and temozolomide induced changes in CDs' expression in U251MG and T98G cells. In zebrafish, DGH did not induce toxicity or behavioral alterations. CONCLUSION The present study is the first to determine the anti-glioma activity of DGH. DGH may be a potent agent for glioblastoma treatment and further studies are needed.
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Affiliation(s)
| | - George A Alexiou
- Neurosurgical Institute, Medical School, University of Ioannina, Ioannina, Greece
| | - Georgios S Markopoulos
- Laboratory of Biology, Department of Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Diamanto Lazari
- Laboratory of Pharmacognosy, Division of Pharmacognosy- Pharmacology, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Olga Tsiftsoglou
- Laboratory of Pharmacognosy, Division of Pharmacognosy- Pharmacology, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Ieremias Chousidis
- Zoology Laboratory Department of Biological Application and Technology, University of Ioannina, 45110 Ioannina, Greece
| | - Ioannis Leonardos
- Zoology Laboratory Department of Biological Application and Technology, University of Ioannina, 45110 Ioannina, Greece
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Zhang G, Xu Q, Wang Z, Sun L, Lv Z, Liu J, Xing C, Yuan Y. p53 protein expression affected by TP53 polymorphism is associated with the biological behavior and prognosis of low rectal cancer. Oncol Lett 2019; 18:6807-6821. [PMID: 31788124 DOI: 10.3892/ol.2019.10999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 11/29/2018] [Indexed: 01/04/2023] Open
Abstract
Low rectal cancer is a subtype of colorectal cancer at a special anatomic site with distinct biological behavior. TP53 is one of the most important cancer suppressor genes, and its structural variation and abnormal expression has been revealed to be associated with multiple cancer types. However, to the best of our knowledge, the association of p53 protein expression with its gene polymorphism, biological behavior and prognosis in low rectal cancer has not been clarified. Therefore, the current study aimed to explore these associations. In the present study, 347 patients with low rectal cancer and 353 controls were enrolled. Kompetitive Allele-Specific Polymerase Chain Reaction was used to detect five polymorphic sites of the TP53 gene (rs1042522, rs12947788, rs1625895, rs2909430 and rs12951053), while immunohistochemistry was used to detect the protein expression of TP53. The associations between p53 protein expression and TP53 polymorphism, biological behavior and prognosis in low rectal cancer were systematically analyzed. In low rectal cancer, p53 protein expression was markedly higher in TP53 rs1042522 mutant carriers compared with that in other genotypes where expression was higher in poorly differentiated, III-IV phase and T3-4 phase tumors, and in III-IV phase female patients. The survival time of patients with low p53 protein expression was evidently longer in females, non-smokers and patients >60 years old. In summary, p53 protein expression was identified to be affected by TP53 rs1042522 polymorphism, and was associated with the biological behavior and prognosis of low rectal cancer. TP53 rs1042522 and the associated protein expression could be used as indicators for biological behavior and prognosis in low rectal cancer.
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Affiliation(s)
- Guangzhe Zhang
- Department of Tumor Etiology and Screening, Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Qian Xu
- Department of Tumor Etiology and Screening, Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zeyang Wang
- Department of Tumor Etiology and Screening, Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Liping Sun
- Department of Tumor Etiology and Screening, Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zhi Lv
- Department of Tumor Etiology and Screening, Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Jingwei Liu
- Department of Tumor Etiology and Screening, Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Chengzhong Xing
- Department of Tumor Etiology and Screening, Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yuan Yuan
- Department of Tumor Etiology and Screening, Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China.,Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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González-Castro TB, Juárez-Rojop IE, López-Narváez ML, Tovilla-Zárate CA, Genis-Mendoza AD, Pérez-Hernández N, Martínez-Magaña JJ, Rodríguez-Pérez JM. Genetic Polymorphisms of CCDC26 rs891835, rs6470745, and rs55705857 in Glioma Risk: A Systematic Review and Meta-analysis. Biochem Genet 2019; 57:583-605. [DOI: 10.1007/s10528-019-09911-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 02/07/2019] [Indexed: 01/03/2023]
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Kim JH, Kim MJ, You JS, Lee HS, Park YS, Park I, Chung SP. Multimodal approach for neurologic prognostication of out-of-hospital cardiac arrest patients undergoing targeted temperature management. Resuscitation 2018; 134:33-40. [PMID: 30562594 DOI: 10.1016/j.resuscitation.2018.11.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 10/22/2018] [Accepted: 11/05/2018] [Indexed: 11/16/2022]
Abstract
AIM Since the introduction of targeted temperature management (TTM), the accuracy and timing of prognostic tests for post-cardiac arrest patients have changed. Although previous studies have demonstrated the effectiveness of a multimodal approach in assessing the prognosis of TTM patients, few studies have investigated an optimised strategy that sequentially combines different prognostic modalities. This study identified an optimal sequential combination of prognostic modalities to predict poor neurologic outcomes in patients undergoing TTM. METHODS We performed a retrospective analysis using TTM management registry data. All patients underwent an identical sequence of prognostic tests at fixed timings. The sequence included brain computed tomography (CT), serum neuron-specific enolase (NSE), electrophysiological examination, neurologic examination, and diffusion-weighted imaging. We used hierarchical classification and regression tree analysis to find the optimal prognostic model. The primary measure was a poor neurologic outcome at one month after cardiac arrest. RESULTS A total of 192 patients were included and 103 patients (53.6%) had poor neurologic outcomes. The final model consisted of brain CT, serum NSE, electroencephalogram, somatosensory-evoked potentials, and pupil light reflex. Our model predicted poor outcomes with a 0% false positive rate. Moreover, our model had an area under the receiver operating characteristic curve value of 0.911 (95% confidence interval, 0.872-0.950), which was significantly higher than that of each prognostic modality alone. CONCLUSIONS Our stepwise model showed excellent prognostic ability to predict poor outcomes at one month after cardiac arrest and may be used to minimise the risk of false pessimistic predictions in patients undergoing TTM.
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Affiliation(s)
- Ji Hoon Kim
- Department of Emergency Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Min Joung Kim
- Department of Emergency Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Je Sung You
- Department of Emergency Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Hye Sun Lee
- Department of Research Affairs, Biostatistics Collaboration Unit, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Yoo Seok Park
- Department of Emergency Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
| | - Incheol Park
- Department of Emergency Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Sung Phil Chung
- Department of Emergency Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
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Radiation Necrosis, Pseudoprogression, Pseudoresponse, and Tumor Recurrence: Imaging Challenges for the Evaluation of Treated Gliomas. CONTRAST MEDIA & MOLECULAR IMAGING 2018; 2018:6828396. [PMID: 30627060 PMCID: PMC6305027 DOI: 10.1155/2018/6828396] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 10/15/2018] [Indexed: 01/16/2023]
Abstract
Glioblastoma (GBM) is the most common primary malignant type of brain neoplasm in adults and carries a dismal prognosis. The current standard of care for GBM is surgical excision followed by radiation therapy (RT) with concurrent and adjuvant temozolomide-based chemotherapy (TMZ) by six additional cycles. In addition, antiangiogenic therapy with an antivascular endothelial growth factor (VEGF) agent has been used for recurrent glioblastoma. Over the last years, new posttreatment entities such as pseudoprogression and pseudoresponse have been recognized, apart from radiation necrosis. This review article focuses on the role of different imaging techniques such as conventional magnetic resonance imaging (MRI), diffusion-weighted imaging (DWI), diffusion tensor imaging (DTI), dynamic contrast enhancement (DCE-MRI) and dynamic susceptibility contrast (DSE-MRI) perfusion, magnetic resonance spectroscopy (MRS), and PET/SPECT in differentiation of such treatment-related changes from tumor recurrence.
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Gandhi P, Khare R, VasudevGulwani H, Kaur S. Circulatory YKL-40 & NLR: Underestimated Prognostic Indicators in Diffuse Glioma. INTERNATIONAL JOURNAL OF MOLECULAR AND CELLULAR MEDICINE 2018; 7:111-118. [PMID: 30276166 PMCID: PMC6148503 DOI: 10.22088/ijmcm.bums.7.2.111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/15/2018] [Indexed: 12/21/2022]
Abstract
In addition to histopathological parameters, evaluation of associated hematological factors is essential for devising a sensitive prognostic scale in glioma. Increased neutrophil-lymphocyte ratio (NLR), a marker of systemic inflammatory response, has recently been associated with worse outcome in various cancers. Given that glioma progression is characterized by inflammation, aggressive angiogenesis, and invasion, increased levels of systemic human-chitinase-3-like-one protein (YKL-40) have also been linked to poor prognosis. The aim of the present study was to assess the plausible association of YKL-40, NLR, and platelet count with increasing tumor grade, and evaluate their status as independent prognostic factors in terms of overall survival (OS) in treatment naive patients with diffuse glioma. Plasma levels of both biochemical markers in 72 diffuse gliomas, median age 42 years, were compared with 36 controls. Comparison of YKL-40, NLR, and PC with respect to tumor grade was found to be significant for each of the markers (P <0.0001) while an inverse significant correlation was seen for YKL-40 and NLR with OS (r = -0.4619, P <0.0001, and r = -0.5561, P < 0.0001, respectively). NLR was the best performing marker with AUC 0.9417 at 97% specificity. In addition, YKL-40 had a positive correlation with NLR (r = 0.4902, P <0.0001), indicating that expression of both markers was linked to inflammation and tumor progression as they were significantly correlated with tumor grade. Expression of YKL-40 and NLR was independently associated with worse survival (HR 1.0062, P = 0.039, and HR 1.1787, P = 0.0003, respectively), thus establishing their clinical utility as prognosticators for diffuse gliomas.
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Affiliation(s)
- Puneet Gandhi
- Department of Research, Bhopal Memorial Hospital and Research Centre, Bhopal, India
| | - Richa Khare
- Department of Research, Bhopal Memorial Hospital and Research Centre, Bhopal, India
| | - Hanni VasudevGulwani
- Department of Pathology, Bhopal Memorial Hospital and Research Centre, Bhopal, India
| | - Sukhpreet Kaur
- Department of Pathology, Bhopal Memorial Hospital and Research Centre, Bhopal, India
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Yan S, Xia R, Jin T, Ren H, Yang H, Li J, Yan M, Zhu Y, Chen M. RTEL1 polymorphisms are associated with lung cancer risk in the Chinese Han population. Oncotarget 2018; 7:70475-70480. [PMID: 27765928 PMCID: PMC5342566 DOI: 10.18632/oncotarget.12297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/26/2016] [Indexed: 11/25/2022] Open
Abstract
RTEL1 (regulator of telomere elongation helicase 1; OMIM 608833) gene polymorphisms were linked to lung cancer (LC) susceptibility in a cancer genome-wide association study (GWAS) Here, we assessed whether seven previously reported RTEL1 polymorphisms influenced LC risk in Han Chinese population. All study samples (554 LC cases and 696 cancer-free controls) were collected from the Affiliated Hospital of Xizang Minzu University in China. We assessed associations between SNPs and LC risk using various several genetic models (codominant, dominant, recessive, overdominant, and additive). Whereas rs2738780 showed a protective effect against LC (Odds ratio (OR) = 0.80 ;95% confidence interval (CI): 0.638 = 0.998; p = 0.048), rs7261546(OR = 4.16; 95% CI: 1.35-12.82; p = 0.007), rs6062299(OR=5.08; 95% CI: 1.43-18.10; p = 0.005) and rs3787098(OR = 5.10; 95% CI: 1.43-18.15; p = 0.004) were all associated with increased LC susceptibility (recessive model). Haplotype analysis suggested that ''CTC'' was associated with a 0.8-fold decrease in LC risk (OR = 0.80, 95% CI, 0.63-1.00; Pearson's p = 0.05). These findings suggest a potential association between RTEL1 polymorphisms and LC risk in a Chinese Han population.
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Affiliation(s)
- Shouchun Yan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China.,Department of Emergency Medicine, Xi'an NO.1 Hospital, Xi'an, Shaanxi 710002, China
| | - Ridong Xia
- Key Laboratory of Molecular Mechanism and Intervention Research for Plateau Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, Shaanxi 712082, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, Shaanxi 712082, China.,Key Laboratory for Basic Life Science Research of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, Shaanxi 712082, China
| | - Tianbo Jin
- Key Laboratory of Molecular Mechanism and Intervention Research for Plateau Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, Shaanxi 712082, China.,Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, Shaanxi 712082, China.,Key Laboratory for Basic Life Science Research of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, Shaanxi 712082, China.,School of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Hui Ren
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
| | - Hua Yang
- School of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Jing Li
- School of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Mengdan Yan
- School of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Yuanyuan Zhu
- School of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, China
| | - Mingwei Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China
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Mostovenko E, Liu Y, Amirian ES, Tsavachidis S, Armstrong GN, Bondy ML, Nilsson CL. Combined Proteomic-Molecular Epidemiology Approach to Identify Precision Targets in Brain Cancer. ACS Chem Neurosci 2018; 9:80-84. [PMID: 28657708 DOI: 10.1021/acschemneuro.7b00165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Primary brain tumors are predominantly malignant gliomas. Grade IV astrocytomas (glioblastomas, GBM) are among the most deadly of all tumors; most patients will succumb to their disease within 2 years of diagnosis despite standard of care. The grim outlook for brain tumor patients indicates that novel precision therapeutic targets must be identified. Our hypothesis is that the cancer proteomes of glioma tumors may contain protein variants that are linked to the aggressive pathology of the disease. To this end, we devised a novel workflow that combined variant proteomics with molecular epidemiological mining of public cancer data sets to identify 10 previously unrecognized variants linked to the risk of death in low grade glioma or GBM. We hypothesize that a subset of the protein variants may be successfully developed in the future as novel targets for malignant gliomas.
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Affiliation(s)
- Ekaterina Mostovenko
- Department of Anatomy, Virginia Commonwealth University, 1217 E. Marshall St., Richmond, Virginia 23284 United States
| | - Yanhong Liu
- Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas 77030, United States
- Department of Medicine, Baylor College of Medicine, Houston, Texas 77030, United States
| | - E. Susan Amirian
- Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Spiridon Tsavachidis
- Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Georgina N. Armstrong
- Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Melissa L. Bondy
- Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas 77030, United States
- Department of Medicine, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Carol L. Nilsson
- Department of Clinical Sciences, Lund University, SE-221 84 Lund, Sweden
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28
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Gandhi P, Khare R, Garg N, Sorte S. Immunophenotypic signature of primary glioblastoma multiforme: A case of extended progression free survival. World J Clin Cases 2017; 5:247-253. [PMID: 28685138 PMCID: PMC5480073 DOI: 10.12998/wjcc.v5.i6.247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 03/17/2017] [Accepted: 04/10/2017] [Indexed: 02/05/2023] Open
Abstract
Glioblastoma-multiforme (GBM), the most aggressive glial tumor, has a worldwide age-adjusted incidence ranging from 0.59-3.69/100000 persons. Despite current multimodal-treatment approach, median-survival time and progression-free survival (PFS) remains short. Glioblastomas display a variety of molecular alterations, which necessitates determining which of these have a prognostic significance. This is a case of a 45-year-old patient who presented with progressive slurring of speech and features of raised intracranial pressure. Computed tomography (CT) scan revealed a large heterogeneously enhancing lesion in the left front-temporal-perisylvian region with solid, cystic areas, suggestive of malignant glioma. Partial tumor-excision was followed by concurrent chemo-radiotherapy. Histopathologically, the tumor was astrocytoma grade-IV. Patient had an extended PFS of 12 mo, with an overall survival of 26 mo. Primary-GBM was confirmed using molecular markers and the immunophenotypic signature was defined by evaluating systemic expression of human telomerase reverse transcriptase, interleukin-6, neutrophil-lymphocyte ratio, tissue inhibitor of metalloproteinases-1, human chitinase-3-like-protein-1 (YKL-40) and high mobility group-A1. Current findings suggest that this signature can identify worst outcomes, independent of clinical criteria.
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Alexiou GA, Lazari D, Markopoulos G, Vartholomatos E, Hodaj E, Galani V, Kyritsis AP. Moschamine inhibits proliferation of glioblastoma cells via cell cycle arrest and apoptosis. Tumour Biol 2017; 39:1010428317705744. [PMID: 28475011 DOI: 10.1177/1010428317705744] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Glioblastoma is the most common and most malignant primary brain tumor with a median survival of 15 months. Moschamine is an indole alkaloid that has a serotoninergic and cyclooxygenase inhibitory effect. In this study, we sought to determine whether moschamine could exert cytotoxic and cytostatic effects on glioma cells in vitro. Moschamine was tested for toxicity in zebrafish. We investigated the effect of moschamine on U251MG and T98G glioblastoma cell lines. Viability and proliferation of the cells were examined with trypan blue exclusion assay, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and the xCELLigence system. Apoptosis (annexin-propidium iodide), cell cycle, and CD24/CD44/CD56/CD15 expression were tested with flow cytometry. Treatment with moschamine significantly reduced cell viability in both cell lines tested. Induction of cell death and cell cycle arrest was confirmed with flow cytometry in both cell lines. After treatment with moschamine, there was a dose-dependent decrease in CD24 and CD44 expression, whereas there was no change in CD56 and CD15 expression in T98G cell line. The zebrafish mortality on the fifth post-fertilization day was zero even for 1 mM of moschamine concentration. The treatment of glioblastoma cell lines with moschamine may represent a novel strategy for targeting glioblastoma.
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Affiliation(s)
- George A Alexiou
- 1 Neurosurgical Institute, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Diamanto Lazari
- 2 Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Markopoulos
- 3 Laboratory of Biology, School of Medicine, University of Ioannina, Ioannina, Greece.,4 Division of Biomedical Research, Institute of Molecular Biology & Biotechnology-Foundation for Research & Technology (IMBB-FORTH) University, Ioannina, Greece
| | | | - Entela Hodaj
- 2 Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.,5 Department of Industrial Chemistry, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
| | - Vasiliki Galani
- 6 Department of Anatomy-Histology-Embryology, School of Medicine, University of Ioannina, Ioannina, Greece
| | - Athanasios P Kyritsis
- 1 Neurosurgical Institute, School of Medicine, University of Ioannina, Ioannina, Greece
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30
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Lazari D, Alexiou GA, Markopoulos GS, Vartholomatos E, Hodaj E, Chousidis I, Leonardos I, Galani V, Kyritsis AP. N-(p-coumaroyl) serotonin inhibits glioblastoma cells growth through triggering S-phase arrest and apoptosis. J Neurooncol 2017; 132:373-381. [PMID: 28365838 DOI: 10.1007/s11060-017-2382-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 02/05/2017] [Indexed: 01/06/2023]
Abstract
Glioblastoma is the most common and most malignant primary brain tumor with a median survival of 15 months. N-(p-coumaroyl) serotonin (CS) is an indole alkaloid with antioxidant, cardioprotective effects after ischemia and antitumor activity. In the present study we sought to determine whether could exert cytotoxic and cytostatic effects in glioma cells in vitro. CS was tested for toxicity in zebrafish. We investigated the effect of CS in U251MG and T98G glioblastoma cell lines. Viability and proliferation of the cells were examined with trypan blue exclusion assay and the xCELLigence system. Cell cycle, activation of caspase-8, mitochondrial membrane potential and CD24/CD44/CD56/CD15/CD71 expression were tested with flow cytometry. Treatment with CS significantly reduced cell viability in both cell lines tested. Induction of cell death and cell cycle arrest at G2/M and S-phase was confirmed with flow cytometry in both cell lines. CS produced significant higher activity of caspase-8 compared to control. After treatment with CS there was a dose-dependent increase in CD15 and CD71 expression, whereas there was no change in CD24/CD44/CD56 expression in both cell lines. The zebrafish mortality on the fifth post fertilization day was zero for even 1 mM of CS concentration. The treatment of glioblastoma cell lines with CS may represent a novel strategy for targeting glioblastoma. Further studies are obviously needed to elucidate the complete mechanism of its antitumor activity.
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Affiliation(s)
- Diamanto Lazari
- Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - George A Alexiou
- Medical School, Neurosurgical Institute, University of Ioannina, PO BOX 103, Neochoropoulo, Ioannina, Greece.
| | - Georgios S Markopoulos
- Laboratory of Biology, School of Medicine, University of Ioannina, Ioannina, Greece.,Division of Biomedical Research, IMBB-FORTH University Campus, Ioannina, Greece
| | - Evrysthenis Vartholomatos
- Medical School, Neurosurgical Institute, University of Ioannina, PO BOX 103, Neochoropoulo, Ioannina, Greece
| | - Entela Hodaj
- Laboratory of Pharmacognosy, Division of Pharmacognosy-Pharmacology, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece.,Department of Industrial Chemistry, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
| | - Ieremias Chousidis
- Zoology Laboratory Department of Biological Application and Technology, University of Ioannina, 45110, Ioannina, Greece
| | - Ioannis Leonardos
- Zoology Laboratory Department of Biological Application and Technology, University of Ioannina, 45110, Ioannina, Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, 45110, Ioannina, Greece
| | - Athanasios P Kyritsis
- Medical School, Neurosurgical Institute, University of Ioannina, PO BOX 103, Neochoropoulo, Ioannina, Greece
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31
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Ding Y, Xu H, Yao J, Xu D, He P, Yi S, Li Q, Liu Y, Wu C, Tian Z. Association between RTEL1 gene polymorphisms and COPD susceptibility in a Chinese Han population. Int J Chron Obstruct Pulmon Dis 2017; 12:931-936. [PMID: 28360516 PMCID: PMC5364006 DOI: 10.2147/copd.s131246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Objective We investigated the association between single-nucleotide polymorphisms in regulation of telomere elongation helicase 1 (RTEL1), which has been associated with telomere length in several brain cancers and age-related diseases, and the risk of chronic obstructive pulmonary disease (COPD) in a Chinese Han population. Methods In a case–control study that included 279 COPD cases and 290 healthy controls, five single-nucleotide polymorphisms in RTEL1 were selected and genotyped using the Sequenom MassARRAY platform. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using unconditional logistic regression after adjusting for age and gender. Results In the genotype model analysis, we determined that rs4809324 polymorphism had a decreased effect on the risk of COPD (CC versus TT: OR =0.28; 95% CI =0.10–0.82; P=0.02). In the genetic model analysis, we found that the “C/C” genotype of rs4809324 was associated with a decreased risk of COPD based on the codominant model (OR =0.33; 95% CI =0.13–0.86; P=0.022) and recessive model (OR =0.32; 95% CI =0.12–0.80; P=0.009). Conclusion Our data shed new light on the association between genetic polymorphisms of RTEL1 and COPD susceptibility in the Chinese Han population.
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Affiliation(s)
- Yipeng Ding
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Heping Xu
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Jinjian Yao
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Dongchuan Xu
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Ping He
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Shengyang Yi
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Quanni Li
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Yuanshui Liu
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Cibing Wu
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
| | - Zhongjie Tian
- Department of Emergency, People's Hospital of Hainan Province, Haikou, Hainan, People's Republic of China
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32
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Alexiou GA, Xourgia X, Gerogianni P, Vartholomatos E, Kalef-Ezra JA, Fotopoulos AD, Kyritsis AP. 99mTc-Tetrofosmin Uptake Correlates with the Sensitivity of Glioblastoma Cell Lines to Temozolomide. World J Nucl Med 2017; 16:45-50. [PMID: 28217019 PMCID: PMC5314663 DOI: 10.4103/1450-1147.181155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
99mTc-tetrofosmin (99mTc-TF) is a single-photon emission computed tomography tracer that has been used for brain tumor imaging. The aim of the study was to assess if 99mTc-TF uptake by glioblastoma cells correlates with their response to temozolomide (TMZ). We investigated the correlation of TMZ antitumor effect with the 99mTc-TF uptake in two glioblastoma cell lines. The U251MG cell line is sensitive to TMZ, whereas T98G is resistant. Viability and proliferation of the cells were examined by trypan blue exclusion assay and xCELLigence system. Cell cycle was analyzed with flow cytometry. The radioactivity in the cellular lysate was measured with a gamma scintillation counter. TMZ induced G2/M cell cycle arrest in U251MG cells, whereas there was no effect on cell cycle in T98G cells. Lower 99mTc-TF uptake was observed in U251MG cells that were exposed to TMZ compared to control (P = 0.0159). No significant difference in respect to 99mTc-TF uptake was found in T98G cells when exposed to TMZ compared to control (P = 0.8). With 99mTc-TF, it was possible to distinguish between TMZ-sensitive and resistant glioblastoma cells within 6 h of treatment initiation. Thus, 99mTc-TF uptake may consist a novel approach to assess an early response of glioblastoma to chemotherapy and deserves further investigation.
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Affiliation(s)
- George A Alexiou
- Neurosurgical Institute, University of Ioannina, Ioannina, Greece
| | - Xanthi Xourgia
- Department of Nuclear Medicine, University Hospital of Ioannina, Ioannina, Greece
| | | | | | - John A Kalef-Ezra
- Department of Medical Physics, University of Ioannina, Ioannina, Greece
| | - Andreas D Fotopoulos
- Department of Nuclear Medicine, University Hospital of Ioannina, Ioannina, Greece
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Alexiou GA, Gerogianni P, Vartholomatos E, Kyritsis AP. Deferiprone Enhances Temozolomide Cytotoxicity in Glioma Cells. Cancer Invest 2016; 34:489-495. [PMID: 27768402 DOI: 10.1080/07357907.2016.1233424] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Glioblastoma is the most malignant primary brain tumor with a median survival of 15 months. Temozolomide (TMZ) is the standard of care for these patients. Iron chelators have been shown to have anti-tumor activity; however, deferiprone (DFP), an orally administered iron chelator, has not been previously evaluated in gliomas. In the present study, we found that combination treatment in glioma cells with TMZ and DFP significantly reduced cell viability, produced cell cycle arrest at G2/M phase, and enhanced apoptosis. TMZ and DFP might be a potent new combination treatment for glioblastoma.
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Affiliation(s)
- George A Alexiou
- a Neurosurgical Institute, University of Ioannina , Ioannina , Greece
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34
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Choi YS, Ahn SS, Kim DW, Chang JH, Kang SG, Kim EH, Kim SH, Rim TH, Lee SK. Incremental Prognostic Value of ADC Histogram Analysis over MGMT Promoter Methylation Status in Patients with Glioblastoma. Radiology 2016; 281:175-84. [PMID: 27120357 DOI: 10.1148/radiol.2016151913] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Purpose To investigate the incremental prognostic value of apparent diffusion coefficient (ADC) histogram analysis over oxygen 6-methylguanine-DNA methyltransferase (MGMT) promoter methylation status in patients with glioblastoma and the correlation between ADC parameters and MGMT status. Materials and Methods This retrospective study was approved by institutional review board, and informed consent was waived. A total of 112 patients with glioblastoma were divided into training (74 patients) and test (38 patients) sets. Overall survival (OS) and progression-free survival (PFS) was analyzed with ADC parameters, MGMT status, and other clinical factors. Multivariate Cox regression models with and without ADC parameters were constructed. Model performance was assessed with c index and receiver operating characteristic curve analyses for 12- and 16-month OS and 12-month PFS in the training set and validated in the test set. ADC parameters were compared according to MGMT status for the entire cohort. Results By using ADC parameters, the c indices and diagnostic accuracies for 12- and 16-month OS and 12-month PFS in the models showed significant improvement, with the exception of c indices in the models for PFS (P < .05 for all) in the training set. In the test set, the diagnostic accuracy was improved by using ADC parameters and was significant, with the 25th and 50th percentiles of ADC for 16-month OS (P = .040 and P = .047) and the 25th percentile of ADC for 12-month PFS (P = .026). No significant correlation was found between ADC parameters and MGMT status. Conclusion ADC histogram analysis had incremental prognostic value over MGMT promoter methylation status in patients with glioblastoma. (©) RSNA, 2016 Online supplemental material is available for this article.
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Affiliation(s)
- Yoon Seong Choi
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
| | - Sung Soo Ahn
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
| | - Dong Wook Kim
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
| | - Jong Hee Chang
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
| | - Seok-Gu Kang
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
| | - Eui Hyun Kim
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
| | - Se Hoon Kim
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
| | - Tyler Hyungtaek Rim
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
| | - Seung-Koo Lee
- From the Department of Radiology and Research Institute of Radiological Science (Y.S.C., S.S.A., S.-K.L.), Department of Neurosurgery (J.H.C., S.-G.K., E.H.K.), Department of Pathology (S.H.K.), and Department of Ophthalmology (T.H.R.), Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; and Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea (D.W.K.)
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SCHWARM FRANKP, UHLE FLORIAN, SCHÄNZER ANNE, ACKER TILL, STEIN MARCO, REINGES MARCUSH, WEISCHER CORNELIA, WEIGAND MARCUSA, UHL EBERHARD, KOLODZIEJ MALGORZATAA. High-mobility group AT-hook protein 2 expression and its prognostic significance in MGMT methylated and unmethylated glioblastoma. Int J Oncol 2016; 48:1485-92. [DOI: 10.3892/ijo.2016.3397] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 12/29/2015] [Indexed: 11/05/2022] Open
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Expression of SRPK1 in gliomas and its role in glioma cell lines viability. Tumour Biol 2016; 37:8699-707. [PMID: 26738865 DOI: 10.1007/s13277-015-4738-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 12/22/2015] [Indexed: 12/30/2022] Open
Abstract
Among factors regulating the splicing of major importance is serine/arginine protein kinase 1 (SRPK1) that phosphorylates SR splicing factors. SRPK1 is expressed in the mammalian central nervous system in a region- and neuron-specific manner. Based on previous observations that glial cells are practically devoid of SRPK1 and reports showing aberrant expression of SRPK1 in numerous tumors, but with conflicting roles, this study aims to investigate the expression of SRPK1 in glioma and its influence on tumor cell biological features. As shown by immunohistochemical analysis, malignant glioma cells express SRPK1 in glioblastomas with significant association between SRPK1 expression and patients' survival. SRPK1 expression was also significantly upregulated at the messenger RNA (mRNA) and protein level in glioma cell lines. Small interfering RNA-mediated downregulation of SRPK1 had little effect on cell viability, while it slightly enhanced the sensitivity of cells to killing by cisplatin. These results support the idea that at least in vitro, the effect of SRPK1 knockdown on the viability of glioma cell lines is rather limited, while the in vivo effects could be attributed to the modulation of angiogenesis by SRPK1.
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Correlation of diffusion tensor and dynamic susceptibility contrast MRI with DNA ploidy and cell cycle analysis of gliomas. Clin Neurol Neurosurg 2015; 139:119-24. [DOI: 10.1016/j.clineuro.2015.09.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 08/25/2015] [Accepted: 09/22/2015] [Indexed: 01/06/2023]
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Claus EB, Walsh KM, Wiencke JK, Molinaro AM, Wiemels JL, Schildkraut JM, Bondy ML, Berger M, Jenkins R, Wrensch M. Survival and low-grade glioma: the emergence of genetic information. Neurosurg Focus 2015; 38:E6. [PMID: 25552286 DOI: 10.3171/2014.10.focus12367] [Citation(s) in RCA: 280] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Significant gaps exist in our understanding of the causes and clinical management of glioma. One of the biggest gaps is how best to manage low-grade (World Health Organization [WHO] Grade II) glioma. Low-grade glioma (LGG) is a uniformly fatal disease of young adults (mean age 41 years), with survival averaging approximately 7 years. Although LGG patients have better survival than patients with high-grade (WHO Grade III or IV) glioma, all LGGs eventually progress to high-grade glioma and death. Data from the Surveillance, Epidemiology and End Results (SEER) program of the National Cancer Institute suggest that for the majority of LGG patients, overall survival has not significantly improved over the past 3 decades, highlighting the need for intensified study of this tumor. Recently published research suggests that historically used clinical variables are not sufficient (and are likely inferior) prognostic and predictive indicators relative to information provided by recently discovered tumor markers (e.g., 1p/19q deletion and IDH1 or IDH2 mutation status), tumor expression profiles (e.g., the proneural profile) and/or constitutive genotype (e.g., rs55705857 on 8q24.21). Discovery of such tumor and constitutive variation may identify variables needed to improve randomization in clinical trials as well as identify patients more sensitive to current treatments and targets for improved treatment in the future. This article reports on survival trends for patients diagnosed with LGG within the United States from 1973 through 2011 and reviews the emerging role of tumor and constitutive genetics in refining risk stratification, defining targeted therapy, and improving survival for this group of relatively young patients.
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Du SL, Geng TT, Feng T, Chen CP, Jin TB, Chen C. The RTEL1 rs6010620 polymorphism and glioma risk: a meta-analysis based on 12 case-control studies. Asian Pac J Cancer Prev 2015; 15:10175-9. [PMID: 25556444 DOI: 10.7314/apjcp.2014.15.23.10175] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The association between the RTEL1 rs6010620 single nucleotide polymorphism (SNP) and glioma risk has been extensively studied. However, the results remain inconclusive. To further examine this association, we performed a meta-analysis. MATERIALS AND METHODS A computerized search of the PubMed and Embase databases for publications regarding the RTEL1 rs6010620 polymorphism and glioma cancer risk was performed. Genotype data were analyzed in a meta-analysis. Odds ratios (ORs) with 95% confidence intervals (CIs) were estimated to assess the association. Sensitivity analyses, tests of heterogeneity, cumulative meta-analyses, and assessments of bias were performed in our meta-analysis. RESULTS Our meta-analysis confirmed that risk with allele A is lower than with allele G for glioma. The A allele of rs6010620 in RTEL1 decreased the risk of developing glioma in the 12 case-control studies for all genetic models: the allele model (OR=0.752, 95%CI: 0.715-0.792), the dominant model (OR=0.729, 95%CI: 0.685-0.776), the recessive model (OR=0.647, 95%CI: 0.569-0.734), the homozygote comparison (OR=0.528, 95%CI: 0.456-0.612), and the heterozygote comparison (OR=0.761, 95%CI: 0.713-0.812). CONCLUSIONS In all genetic models, the association between the RTEL1 rs6010620 polymorphism and glioma risk was significant. This meta-analysis suggests that the RTEL1 rs6010620 polymorphism may be a risk factor for glioma. Further functional studies evaluating this polymorphism and glioma risk are warranted.
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Affiliation(s)
- Shu-Li Du
- School of Life Sciences, Northwest University, Xi'an, China E-mail : ,
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Choi YS, Kim DW, Lee SK, Chang JH, Kang SG, Kim EH, Kim SH, Rim TH, Ahn SS. The Added Prognostic Value of Preoperative Dynamic Contrast-Enhanced MRI Histogram Analysis in Patients with Glioblastoma: Analysis of Overall and Progression-Free Survival. AJNR Am J Neuroradiol 2015; 36:2235-41. [PMID: 26338911 DOI: 10.3174/ajnr.a4449] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 04/20/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE The prognostic value of dynamic contrast-enhanced MR imaging in patients with glioblastoma is controversial. We investigated the added prognostic value of dynamic contrast-enhanced MR imaging to clinical parameters and molecular biomarkers in patients with glioblastoma by using histogram analysis. MATERIALS AND METHODS This retrospective study consisted of 61 patients who underwent preoperative dynamic contrast-enhanced MR imaging for glioblastoma. The histogram parameters of dynamic contrast-enhanced MR imaging, including volume transfer constant, extravascular extracellular volume fraction, and plasma volume fraction, were calculated from entire enhancing tumors. Univariate analyses for overall survival and progression-free survival were performed with preoperative clinical and dynamic contrast-enhanced MR imaging parameters and postoperative molecular biomarkers. Multivariate Cox regression was performed to build pre- and postoperative models for overall survival and progression-free survival. The performance of models was assessed by calculating the Harrell concordance index. RESULTS In univariate analysis, patients with higher volume transfer constant and extravascular extracellular volume fraction values showed worse overall survival and progression-free survival, whereas plasma volume fraction showed no significant correlation. In multivariate analyses for overall survival, the fifth percentile value of volume transfer constant and kurtosis of extravascular extracellular volume fraction were independently prognostic in the preoperative model, and kurtosis of volume transfer constant and extravascular extracellular volume fraction were independently prognostic in the postoperative model. For progression-free survival, independent prognostic factors were minimum and fifth percentile values of volume transfer constant and kurtosis of extravascular extracellular volume fraction in the preoperative model and kurtosis of extravascular extracellular volume fraction in the postoperative model. The performance of preoperative models for progression-free survival was significantly improved when minimum or fifth percentile values of volume transfer constant and kurtosis of extravascular extracellular volume fraction were added. CONCLUSIONS Higher volume transfer constant and extravascular extracellular volume fraction values are associated with worse prognosis, and dynamic contrast-enhanced MR imaging may have added prognostic value in combination with preoperative clinical parameters, especially in predicting progression-free survival.
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Affiliation(s)
- Y S Choi
- From the Departments of Radiology and Research Institute of Radiological Science (Y.S.C., S.-K.L., S.S.A.)
| | - D W Kim
- Department of Policy Research Affairs (D.W.K.), National Health Insurance Service Ilsan Hospital, Goyang, Gyeonggi-do, Korea
| | - S-K Lee
- From the Departments of Radiology and Research Institute of Radiological Science (Y.S.C., S.-K.L., S.S.A.)
| | - J H Chang
- Neurosurgery (J.H.C., S.-G.K., E.H.K.)
| | - S-G Kang
- Neurosurgery (J.H.C., S.-G.K., E.H.K.)
| | - E H Kim
- Neurosurgery (J.H.C., S.-G.K., E.H.K.)
| | | | - T H Rim
- Ophthalmology (T.H.R.), Yonsei University College of Medicine, Seoul, Korea
| | - S S Ahn
- From the Departments of Radiology and Research Institute of Radiological Science (Y.S.C., S.-K.L., S.S.A.)
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Wu Q, Peng Y, Zhao X. An Updated and Comprehensive Meta-Analysis of Association Between Seven Hot Loci Polymorphisms from Eight GWAS and Glioma Risk. Mol Neurobiol 2015; 53:4397-405. [DOI: 10.1007/s12035-015-9346-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 07/07/2015] [Indexed: 12/12/2022]
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Yang B, Heng L, Du S, Yang H, Jin T, Lang H, Li S. Association between RTEL1, PHLDB1, and TREH Polymorphisms and Glioblastoma Risk: A Case-Control Study. Med Sci Monit 2015; 21:1983-8. [PMID: 26156397 PMCID: PMC4507820 DOI: 10.12659/msm.893723] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Background Glioblastoma (GBM) is a highly invasive, aggressive, and incurable brain tumor. Genetic factors play important roles in GBM risk. The aim of this study was to elucidate the influence of gene polymorphism on GBM susceptibility. Material/Methods In this case-control study, we included 72 GBM patients and 320 healthy controls to analyze the association between 29 single-nucleotide polymorphisms and GBM cancer risk in the Chinese Han population. The single-nucleotide polymorphisms were determined by Sequenom MassARRAY RS1000 and statistical analysis was performed using SPSS software and SNPStats software. Results Using the χ2 test, we found that rs2297440 and rs6010620 in RTEL1 increased risk of GBM. In the recessive model, we also found that the genotypes “CC” of rs2297440 and “GG” of rs6010620 in RTEL1 significantly increased GBM risk. The variant TT genotype of TREH rs17748 and the variant TT genotype of PHLDB1 rs498872 decreased GBM risk in the recessive model. We also found that the TREH rs17748 variant C allele showed an increased risk in males in the dominant model. Conclusions Our results suggest a significant association between the RETL1, TREH, and PHLDB1 genes and GBM development in the Han Chinese population.
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Affiliation(s)
- Bo Yang
- Department of Outpatient, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Liang Heng
- Department of Medical, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Shuli Du
- School of Life Sciences, Northwest University, Xi'an, Shaanxi, China (mainland)
| | - Hua Yang
- School of Life Sciences, Northwest University, Xi'an, Shaanxi, China (mainland)
| | - Tianbo Jin
- School of Life Sciences, Northwest University, Xi'an, Shaanxi, China (mainland)
| | - Hongjun Lang
- Department of Nursing, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
| | - Shanqu Li
- Department of Outpatient, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China (mainland)
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Grupp K, Roettger L, Kluth M, Hube-Magg C, Simon R, Lebok P, Minner S, Tsourlakis MC, Koop C, Graefen M, Adam M, Haese A, Wittmer C, Sauter G, Wilczak W, Huland H, Schlomm T, Steurer S, Krech T. Expression of DNA ligase IV is linked to poor prognosis and characterizes a subset of prostate cancers harboring TMPRSS2:ERG fusion and PTEN deletion. Oncol Rep 2015; 34:1211-20. [PMID: 26134445 DOI: 10.3892/or.2015.4080] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 05/18/2015] [Indexed: 11/05/2022] Open
Abstract
DNA ligases are essential for the maintenance of genome integrity as they are indispensable for DNA replication, recombination and repair. The present study was undertaken to gain insights into the prevalence and clinical significance of ligase IV (LIG4) expression in prostate cancer. A total of 11,152 prostate cancer specimens were analyzed by immunohistochemistry for LIG4 expression. Results were compared to follow-up data, ERG status and deletions at PTEN, 3p13, 5q21 and 6q15. LIG4 expression was predominantly localized in the nucleus of the cells with increased intensities in malignant as compared to benign prostate epithelium. In prostate cancer, LIG4 expression was found in 91% of interpretable tumors, including 12% cancers with weak, 23% with moderate and 56% with strong LIG4 positivity. Strong LIG4 expression was tightly linked to advanced Gleason score (P<0.0001) and positive nodal involvement (P=0.03). There was a remarkable accumulation of strong LIG4 expression in tumors harboring TMPRSS2:ERG fusion and PTEN deletions (P<0.0001 each). High LIG4 expression was also tightly related to early biochemical recurrence when all tumors (P<0.0001) or the subsets of ERG-negative (P=0.0004) or ERG-positive prostate cancers (P=0.006) were analyzed. Multivariate analysis including parameters that are available before surgery demonstrated independent association with biochemical recurrence for advanced Gleason grade on biopsy, high preoperative PSA level, high clinical stage (P<0.0001 each) and for LIG4 immunostaining (P=0.03). Our study identifies LIG4 as a predictor of an increased risk for early PSA recurrence in prostate cancer. Moreover, the strong association with TMPRSS2:ERG fusion and PTEN deletions suggest important interactions between these pathways in prostate cancers.
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Affiliation(s)
- Katharina Grupp
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Laura Roettger
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Martina Kluth
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Claudia Hube-Magg
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Ronald Simon
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Patrick Lebok
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Sarah Minner
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | | | - Christina Koop
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Markus Graefen
- Martini‑Clinic, Prostate Cancer Center, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Meike Adam
- Martini‑Clinic, Prostate Cancer Center, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Alexander Haese
- Martini‑Clinic, Prostate Cancer Center, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Corinna Wittmer
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Guido Sauter
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Waldemar Wilczak
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Hartwig Huland
- Martini‑Clinic, Prostate Cancer Center, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Thorsten Schlomm
- Martini‑Clinic, Prostate Cancer Center, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Stefan Steurer
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
| | - Till Krech
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, D-20246 Hamburg, Germany
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Jin T, Wang Y, Li G, Du S, Yang H, Geng T, Hou P, Gong Y. Analysis of difference of association between polymorphisms in the XRCC5, RPA3 and RTEL1 genes and glioma, astrocytoma and glioblastoma. Am J Cancer Res 2015; 5:2294-300. [PMID: 26328260 PMCID: PMC4548341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 06/10/2015] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND Gliomas are the most common aggressive brain tumors and have many complex pathological types. Previous reports have discovered that genetic mutations are associated with the risk of glioma. However, it is unclear whether uniform genetic mutations exist difference between glioma and its two pathological types in the Han Chinese population. MATERIALS AND METHODS We evaluated 20 SNPs of 703 glioma cases (338 astrocytoma cases, 122 glioblastoma cases) and 635 controls in a Han Chinese population using χ(2) test and genetic model analysis. RESULTS In three case-control studies, we found rs9288516 in XRCC5 gene showed a decreased risk of glioma (OR, 0.85; 95% CI, 0.73-0.99; P = 0.042) and glioblastoma (OR, 0.70; 95% CI, 0.52-0.92; P = 0.001) in the allele model. We identified rs414805 in RPA3 gene showed an increased risk of glioblastoma in allele model (OR, 1.38; 95% CI, 1.00-1.89; P = 0.047) and dominant model (OR, 1.57; 95% CI, 1.05-2.35; P = 0.027), analysis respectively. Meanwhile, rs2297440 in RTEL1 gene showed an increased risk of glioma (OR, 1.30; 95% CI, 1.10-1.54; P = 0.002) and astrocytoma (OR, 1.26; 95% CI, 1.02-1.54; P = 0.029) in the allele model. In addition, we also observed a haplotype of "GCT" in the RTEL1 gene with an increased risk of astrocytoma (P = 0.005). CONCLUSIONS Polymorphisms in the XRCC5, RPA3 and RTEL1 genes, combinating with previous reaserches, are associated with glioma developing. However, those genes mutations may play different roles in the glioma, astrocytoma and glioblastoma, respectively.
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Affiliation(s)
- Tianbo Jin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest UniversityXi’an 710069, China
- National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest UniversityXi’an 710069, China
| | - Yuan Wang
- Department of Trauma, The Second Affiliated Hospital, Inner Mongolia Medical UniversityHohhot 010030, China
| | - Gang Li
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical UniversityXi’an 710038, China
| | - Shuli Du
- National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest UniversityXi’an 710069, China
| | - Hua Yang
- National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest UniversityXi’an 710069, China
| | - Tingting Geng
- National Engineering Research Center for Miniaturized Detection Systems, School of Life Sciences, Northwest UniversityXi’an 710069, China
| | - Peng Hou
- Department of Endocrinology, The First Affiliated Hospital of Xi’an Jiaotong University School of MedicineXi’an 710061, China
| | - Yongkuan Gong
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest UniversityXi’an 710069, China
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Tang X, Hobbs CA, Cleves MA, Erickson SW, MacLeod SL, Malik S. Genetic variation affects congenital heart defect susceptibility in offspring exposed to maternal tobacco use. ACTA ACUST UNITED AC 2015; 103:834-42. [PMID: 26033827 DOI: 10.1002/bdra.23370] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Congenital heart defects (CHDs) are among the most prevalent and serious birth defects, occurring in 8 to 10 of every 1000 live births in the United States. Epidemiologic studies have reported an association between CHDs and maternal smoking, but it remains unknown how genes impact the susceptibility of offspring to CHDs in the presence of maternal tobacco use. METHODS Using data from 403 case- and 219 control-parental triads enrolled in the National Birth Defects Prevention Study between 1998 and 2008, we investigated the association between CHDs and maternal and infant genetic variants involved in the tobacco metabolism and DNA repair pathways among mothers who smoked prenatally. RESULTS The maternal genotypes of single nucleotide polymorphisms in the excision repair cross-complementation group 1 (ERCC1), poly (ADP-ribose) polymerase 2 (PARP2), and ERCC5 genes were identified to be significantly associated with the occurrence of CHDs in the presence of maternal tobacco use. Our analysis also revealed a moderate association between the infant genotypes of polymorphisms in the O-sialoglycoprotein endopeptidase (OSGEP) gene and increased risk of CHDs among mothers who smoked. CONCLUSION Our study provides evidence that maternal and infant polymorphisms within the ERCC1, PARP2, ERCC5, and OSGEP genes are associated with CHD risk in the presence of maternal tobacco use. These results may provide insight into the susceptibility of having a pregnancy affected by CHDs among women who smoke.
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Affiliation(s)
- Xinyu Tang
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Charlotte A Hobbs
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Mario A Cleves
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Stephen W Erickson
- Department of Biostatistics, College of Public Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Stewart L MacLeod
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Sadia Malik
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
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Tang X, Cleves MA, Nick TG, Li M, MacLeod SL, Erickson SW, Li J, Shaw GM, Mosley BS, Hobbs CA. Obstructive heart defects associated with candidate genes, maternal obesity, and folic acid supplementation. Am J Med Genet A 2015; 167:1231-42. [PMID: 25846410 PMCID: PMC4675451 DOI: 10.1002/ajmg.a.36867] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 10/17/2014] [Indexed: 01/13/2023]
Abstract
Right-sided and left-sided obstructive heart defects (OHDs) are subtypes of congenital heart defects, in which the heart valves, arteries, or veins are abnormally narrow or blocked. Previous studies have suggested that the development of OHDs involved a complex interplay between genetic variants and maternal factors. Using the data from 569 OHD case families and 1,644 control families enrolled in the National Birth Defects Prevention Study (NBDPS) between 1997 and 2008, we conducted an analysis to investigate the genetic effects of 877 single nucleotide polymorphisms (SNPs) in 60 candidate genes for association with the risk of OHDs, and their interactions with maternal use of folic acid supplements, and pre-pregnancy obesity. Applying log-linear models based on the hybrid design, we identified a SNP in methylenetetrahydrofolate reductase (MTHFR) gene (C677T polymorphism) with a main genetic effect on the occurrence of OHDs. In addition, multiple SNPs in betaine-homocysteine methyltransferase (BHMT and BHMT2) were also identified to be associated with the occurrence of OHDs through significant main infant genetic effects and interaction effects with maternal use of folic acid supplements. We also identified multiple SNPs in glutamate-cysteine ligase, catalytic subunit (GCLC) and DNA (cytosine-5-)-methyltransferase 3 beta (DNMT3B) that were associated with elevated risk of OHDs among obese women. Our findings suggested that the risk of OHDs was closely related to a combined effect of variations in genes in the folate, homocysteine, or glutathione/transsulfuration pathways, maternal use of folic acid supplements and pre-pregnancy obesity.
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Affiliation(s)
- Xinyu Tang
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Mario A Cleves
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Todd G Nick
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Ming Li
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Stewart L MacLeod
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Stephen W Erickson
- Department of Biostatistics, College of Public Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Jingyun Li
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Gary M Shaw
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University Medical School, Palo Alto, California
| | - Bridget S Mosley
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Charlotte A Hobbs
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas
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Walsh KM, Wiencke JK, Lachance DH, Wiemels JL, Molinaro AM, Eckel-Passow JE, Jenkins RB, Wrensch MR. Telomere maintenance and the etiology of adult glioma. Neuro Oncol 2015; 17:1445-52. [PMID: 26014050 DOI: 10.1093/neuonc/nov082] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 04/08/2015] [Indexed: 12/16/2022] Open
Abstract
A growing body of epidemiologic and tumor genomic research has identified an important role for telomere maintenance in glioma susceptibility, initiation, and prognosis. Telomere length has long been investigated in relation to cancer, but whether longer or shorter telomere length might be associated with glioma risk has remained elusive. Recent data address this question and are reviewed here. Common inherited variants near the telomerase-component genes TERC and TERT are associated both with longer telomere length and increased risk of glioma. Exome sequencing of glioma patients from families with multiple affected members has identified rare inherited mutations in POT1 (protection of telomeres protein 1) as high-penetrance glioma risk factors. These heritable POT1 mutations are also associated with increased telomere length in leukocytes. Tumor sequencing studies further indicate that acquired somatic mutations of TERT and ATRX are among the most frequent alterations found in adult gliomas. These mutations facilitate telomere lengthening, thus bypassing a critical mechanism of apoptosis. Although future research is needed, mounting evidence suggests that glioma is, at least in part, a disease of telomere dysregulation. Specifically, several inherited and acquired variants underlying gliomagenesis affect telomere pathways and are also associated with increased telomere length.
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Affiliation(s)
- Kyle M Walsh
- Department of Neurological Surgery, University of California-San Francisco, San Francisco, California (K.M.W., J.K.W., A.M.M., M.R.W.); Institute for Human Genetics, University of California-San Francisco, San Francisco, California (J.K.W., M.R.W.); Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (D.H.L., R.B.J.); Department of Neurology, Mayo Clinic, Rochester, Minnesota (D.H.L.); Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California (J.L.W., A.M.M.); Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota (J.E.E.-P.)
| | - John K Wiencke
- Department of Neurological Surgery, University of California-San Francisco, San Francisco, California (K.M.W., J.K.W., A.M.M., M.R.W.); Institute for Human Genetics, University of California-San Francisco, San Francisco, California (J.K.W., M.R.W.); Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (D.H.L., R.B.J.); Department of Neurology, Mayo Clinic, Rochester, Minnesota (D.H.L.); Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California (J.L.W., A.M.M.); Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota (J.E.E.-P.)
| | - Daniel H Lachance
- Department of Neurological Surgery, University of California-San Francisco, San Francisco, California (K.M.W., J.K.W., A.M.M., M.R.W.); Institute for Human Genetics, University of California-San Francisco, San Francisco, California (J.K.W., M.R.W.); Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (D.H.L., R.B.J.); Department of Neurology, Mayo Clinic, Rochester, Minnesota (D.H.L.); Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California (J.L.W., A.M.M.); Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota (J.E.E.-P.)
| | - Joseph L Wiemels
- Department of Neurological Surgery, University of California-San Francisco, San Francisco, California (K.M.W., J.K.W., A.M.M., M.R.W.); Institute for Human Genetics, University of California-San Francisco, San Francisco, California (J.K.W., M.R.W.); Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (D.H.L., R.B.J.); Department of Neurology, Mayo Clinic, Rochester, Minnesota (D.H.L.); Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California (J.L.W., A.M.M.); Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota (J.E.E.-P.)
| | - Annette M Molinaro
- Department of Neurological Surgery, University of California-San Francisco, San Francisco, California (K.M.W., J.K.W., A.M.M., M.R.W.); Institute for Human Genetics, University of California-San Francisco, San Francisco, California (J.K.W., M.R.W.); Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (D.H.L., R.B.J.); Department of Neurology, Mayo Clinic, Rochester, Minnesota (D.H.L.); Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California (J.L.W., A.M.M.); Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota (J.E.E.-P.)
| | - Jeanette E Eckel-Passow
- Department of Neurological Surgery, University of California-San Francisco, San Francisco, California (K.M.W., J.K.W., A.M.M., M.R.W.); Institute for Human Genetics, University of California-San Francisco, San Francisco, California (J.K.W., M.R.W.); Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (D.H.L., R.B.J.); Department of Neurology, Mayo Clinic, Rochester, Minnesota (D.H.L.); Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California (J.L.W., A.M.M.); Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota (J.E.E.-P.)
| | - Robert B Jenkins
- Department of Neurological Surgery, University of California-San Francisco, San Francisco, California (K.M.W., J.K.W., A.M.M., M.R.W.); Institute for Human Genetics, University of California-San Francisco, San Francisco, California (J.K.W., M.R.W.); Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (D.H.L., R.B.J.); Department of Neurology, Mayo Clinic, Rochester, Minnesota (D.H.L.); Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California (J.L.W., A.M.M.); Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota (J.E.E.-P.)
| | - Margaret R Wrensch
- Department of Neurological Surgery, University of California-San Francisco, San Francisco, California (K.M.W., J.K.W., A.M.M., M.R.W.); Institute for Human Genetics, University of California-San Francisco, San Francisco, California (J.K.W., M.R.W.); Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota (D.H.L., R.B.J.); Department of Neurology, Mayo Clinic, Rochester, Minnesota (D.H.L.); Department of Epidemiology and Biostatistics, University of California-San Francisco, San Francisco, California (J.L.W., A.M.M.); Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota (J.E.E.-P.)
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Combination treatment of TRAIL, DFMO and radiation for malignant glioma cells. J Neurooncol 2015; 123:217-24. [PMID: 25935110 DOI: 10.1007/s11060-015-1799-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/20/2015] [Indexed: 10/23/2022]
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has shown potent and cancer-selective killing activity and drawn considerable attention as a promising therapy for cancer. Another promising cancer therapy is difluoromethylornithine (DFMO), an inhibitor of ornithine decarboxylase, which is oraly administered and well tolerated. Nevertheless, many types of cancer, including gliomas, have exhibited resistance to TRAIL-induced apoptosis and similarly the potency of DFMO should be enhanced to optimize therapeutic efficacy. In this study we sought to determine whether DFMO, in combination with TRAIL and radiation, could result in an enhanced anti-glioma effect in vitro. We investigated the effect of DFMO, TRAIL and radiation in various combinations on a panel of glioblastoma cell lines (A172, T98G, D54, U251MG). Viability and proliferation of the cells were examined with trypan blue exclusion assay, crystal violet and xCELLigence system. Apoptosis (Annexin-PI), cell cycle and activation of caspase-8 were tested with flow cytometry. BAD protein levels were determined by Western blot analysis. DFMO induced BAD overexpression. Combination treatment with DFMO, TRAIL and radiation significantly reduced cell viability in all cell lines tested. Increased induction of cell death and cell cycle arrest was confirmed with flow cytometry in A172 and D54 cell lines, while enhanced activation of annexin and caspase-8 was revealed in U251MG and T98G cells. The treatment of glioblastoma cell lines with combination of DFMO, TRAIL and radiation showed an enhanced effect. This combination treatment may represent a novel strategy for targeting glioblastoma.
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Thuy MN, Kam JK, Lee GC, Tao PL, Ling DQ, Cheng M, Goh SK, Papachristos AJ, Shukla L, Wall KL, Smoll NR, Jones JJ, Gikenye N, Soh B, Moffat B, Johnson N, Drummond KJ. A novel literature-based approach to identify genetic and molecular predictors of survival in glioblastoma multiforme: Analysis of 14,678 patients using systematic review and meta-analytical tools. J Clin Neurosci 2015; 22:785-99. [DOI: 10.1016/j.jocn.2014.10.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Revised: 10/21/2014] [Accepted: 10/25/2014] [Indexed: 01/08/2023]
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Ferber K, Archer KJ. Modeling discrete survival time using genomic feature data. Cancer Inform 2015; 14:37-43. [PMID: 25861216 PMCID: PMC4360712 DOI: 10.4137/cin.s17275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 12/18/2014] [Accepted: 12/25/2014] [Indexed: 01/31/2023] Open
Abstract
Researchers have recently shown that penalized models perform well when applied to high-throughput genomic data. Previous researchers introduced the generalized monotone incremental forward stagewise (GMIFS) method for fitting overparameterized logistic regression models. The GMIFS method was subsequently extended by others for fitting several different logit link ordinal response models to high-throughput genomic data. In this study, we further extended the GMIFS method for ordinal response modeling using a complementary log-log link, which allows one to model discrete survival data. We applied our extension to a publicly available microarray gene expression dataset (GSE53733) with a discrete survival outcome. The dataset included 70 primary glioblastoma samples from patients of the German Glioma Network with long-, intermediate-, and short-term overall survival. We tested the performance of our method by examining the prediction accuracy of the fitted model. The method has been implemented as an addition to the ordinalgmifs package in the R programming environment.
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Affiliation(s)
- Kyle Ferber
- Department of Biostatistics, Virginia Commonwealth University, Richmond, VA, USA
| | - Kellie J Archer
- Department of Biostatistics, Virginia Commonwealth University, Richmond, VA, USA
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