keyword
MENU ▼
Read by QxMD icon Read
search

Mdm2

keyword
https://www.readbyqxmd.com/read/28325293/a-pirna-like-small-rna-induces-chemoresistance-to-cisplatin-based-therapy-by-inhibiting-apoptosis-in-lung-squamous-cell-carcinoma
#1
Yuyan Wang, Tyler Gable, Mark Z Ma, David Clark, Jun Zhao, Yi Zhang, Wei Liu, Li Mao, Yuping Mei
Lung cancer is the leading cause of cancer-related death worldwide. Although advanced drugs have benefitted patients, therapeutic success has largely been hampered because of rapid development of resistance. Here we report that PIWI-interacting RNA likes (piR-Ls), a novel type of functional sncRNAs, play key roles in chemoresistance to cisplatin (CDDP)-based chemotherapy in lung squamous cell carcinoma (LSCC). piR-L-138 was upregulated upon CDDP-based chemotherapy both in LSCC cells and in patient-derived xenograft (PDX) LSCC models...
March 17, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28322991/thyroid-hormone-induce-a-p53-dependent-dna-damage-through-pi3k-akt-activation-in-sperm
#2
Hong Xian, Fang Wang, Wending Teng, Dong Yang, Ming Zhang
Accumulating evidences showed that thyroid hormone was participated in the functioning of the reproductive system, and an elevated level of thyroid hormones had a negative impact on reproductive system. However, the molecular basis for this observation still remains to be fully understood. Here, we show that l-Thyroxine significantly impaired human sperm motility. The molecular basis showed that thyroxine receptor stimulation triggers Phosphatidyl Inositol 3-kinase (PI3K)/Akt signaling activation leading to the E3 ligase MDM2 phosphorylation at serine 166, which directly interacted with p53 for degradation...
March 16, 2017: Gene
https://www.readbyqxmd.com/read/28315337/p53-signaling-pathway-polymorphisms-associated-with-emphysematous-changes-in-copd-patients
#3
Shiro Mizuno, Takeshi Ishizaki, Maiko Kadowaki, Masaya Akai, Kohei Shiozaki, Masaharu Iguchi, Taku Oikawa, Ken Nakagawa, Kazuhiro Osanai, Hirohisa Toga, Jose Gomez-Arroyo, Donatas Kraskauskas, Carlyne D Cool, Herman J Bogaard, Norbert F Voelkel
BACKGROUND: The p53 signaling pathway may be important for the pathogenesis of emphysematous changes in the lungs of smokers. Polymorphism of p53 at codon 72 is known to affect apoptotic effector proteins, and the polymorphism of mouse double minute 2 homolog (MDM2) SNP309 is known to increase MDM2 expression. The aim of this study was to assess polymorphisms of the p53 and MDM2 genes in smokers and confirm the role of SNPs in these genes in the pathogenesis of pulmonary emphysema. METHODS: 365 patients with a smoking history were included in this study, and the polymorphisms of p53 and MDM2 genes were identified...
March 14, 2017: Chest
https://www.readbyqxmd.com/read/28300575/correlation-of-histological-grade-of-dedifferentiation-with-clinical-outcome-in-55-patients-with-dedifferentiated-liposarcomas
#4
Kossivi Dantey, Karen Schoedel, Oleksandr Yergiyev, David Bartlett, Uma N M Rao
In this study the histologic grade of dedifferentiated liposarcomas was correlated with outcome in surgically resected specimens in 55 patients over a 19-year period at the University of Pittsburgh Medical Center. The tumors were located in the retroperitoneum (N=34); the extremities and thigh (N=16), and the remainder involved the spermatic cord and head and neck. Most tumors were large (mean=21 cm.) Follow up was available in all 55 patients (median=36months). Forty-one tumors classified as high-grade dedifferentiated liposarcoma (HG-DDLPS) had mitotically active pleomorphic and spindle cells and foci of necrosis...
March 11, 2017: Human Pathology
https://www.readbyqxmd.com/read/28296148/dimp53-1-a-novel-small-molecule-dual-inhibitor-of-p53-mdm2-x-interactions-with-multifunctional-p53-dependent-anticancer-properties
#5
Joana Soares, Margarida Espadinha, Liliana Raimundo, Helena Ramos, Ana Sara Gomes, Sara Gomes, Joana B Loureiro, Alberto Inga, Flávio Reis, Célia Gomes, Maria M M Santos, Lucília Saraiva
The transcription factor p53 plays a crucial role in cancer development and dissemination, and thus p53-targeted therapies are amongst the most encouraging anticancer strategies. In human cancers with wild-type (wt) p53, its inactivation by interaction with murine double minute (MDM)2 and MDMX is a common event. Simultaneous inhibition of the p53 interaction with both MDMs is crucial to restore the tumor suppressor activity of p53. Here we describe the synthesis of the new tryptophanol-derived oxazoloisoindolinone DIMP53-1 and identify its activity as a dual inhibitor of the p53-MDM2/X interactions using a yeast-based assay...
March 10, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28288036/gist-manifesting-as-a-retroperitoneal-tumor-clinicopathologic-immunohistochemical-and-molecular-genetic-study-of-112-cases
#6
Markku Miettinen, Anna Felisiak-Golabek, Zengfeng Wang, Shingo Inaguma, Jerzy Lasota
Most gastrointestinal stromal tumors (GISTs) occur in the tubular gastrointestinal (GI) tract, but some present apparently outside the GI tract. In this study, we analyzed 112 GISTs located in the retroperitoneum. These tumors occurred in 55 women and 57 men with a median age of 65 years (range: 21 to 89 y). On the basis of clinically or histologically detected connections to GI tract, 15 tumors were considered likely of gastric, 9 duodenal, and 13 of small intestinal origin. The remaining cases were categorized by location as peripancreatic (n=25), pelvic (n=11), mesenteric (n=4), and of unspecified/miscellaneous sites (n=35)...
March 10, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28287985/policy-iteration-algorithm-for-optimal-control-of-stochastic-logical-dynamical-systems
#7
Yuhu Wu, Tielong Shen
This brief investigates the infinite horizon optimal control problem for stochastic multivalued logical dynamical systems with discounted cost. Applying the equivalent descriptions of stochastic logical dynamics in term of Markov decision process, the discounted infinite horizon optimal control problem is presented in an algebraic form. Then, employing the method of semitensor product of matrices and the increasing-dimension technique, a succinct algebraic form of the policy iteration algorithm is derived to solve the optimal control problem...
March 6, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28284458/p53-dysregulation-in-b-cell-malignancies-more-than-a-single-gene-in-the-pathway-to-hell
#8
REVIEW
B Tessoulin, M Eveillard, A Lok, D Chiron, P Moreau, M Amiot, A Moreau-Aubry, S Le Gouill, C Pellat-Deceunynck
TP53 deletion or mutation is frequent in B-cell malignancies and is associated with a low response rate. We describe here the p53 landscape in B-cell malignancies, from B-Acute Lymphoblastic Leukemia to Plasma Cell Leukemia, by analyzing incidence of gain or loss of function of actors both upstream and within the p53 pathway, namely MYC, RAS, ARF, MDM2, ATM and TP53. Abnormalities are not equally distributed and their incidence is highly variable among malignancies. Deletion and mutation, usually associated, of ATM or TP53 are frequent in Diffuse Large B-Cell Lymphoma and Mantle Cell Lymphoma...
March 4, 2017: Blood Reviews
https://www.readbyqxmd.com/read/28283504/mk-8242-is-active-in-patients-with-p53-wild-type-advanced-solid-tumors
#9
(no author information available yet)
The MDM2 inhibitor MK-8242 is tolerable in patients with liposarcoma and other advanced solid tumors.
March 10, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28281901/tp53-and-its-potential-therapeutic-role-as-a-target-in-bladder-cancer
#10
Chiara Ciccarese, Francesco Massari, Ana Blanca, Giampaolo Tortora, Rodolfo Montironi, Liang Cheng, Marina Scarpelli, Maria R Raspollini, Nuno Vau, Jorge Fonseca, Antonio Lopez-Beltran
Despite more than 30 years of research on p53 resulting in >50,000 publications, we are now beginning to figure out the complexity of the p53 pathway, gene ontology and conformational structure of the molecule. Recent years brought great advances in p53 related drugs and the potencial ways in which p53 is inactivated in cancer. Areas covered: We searched for related publications on Pubmed and ClinicalTrial.gov using the following keywords 'p53, Tp53, p53 and bladder cancer, p53 and therapeutic target'. Relevant articles improved the understanding on p53 pathways and their potential as candidate to targeted therapy in bladder cancer...
April 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28276427/trib2-confers-resistance-to-anti-cancer-therapy-by-activating-the-serine-threonine-protein-kinase-akt
#11
Richard Hill, Patricia A Madureira, Bibiana Ferreira, Inês Baptista, Susana Machado, Laura Colaço, Marta Dos Santos, Ningshu Liu, Ana Dopazo, Selma Ugurel, Angyal Adrienn, Endre Kiss-Toth, Murat Isbilen, Ali O Gure, Wolfgang Link
Intrinsic and acquired resistance to chemotherapy is the fundamental reason for treatment failure for many cancer patients. The identification of molecular mechanisms involved in drug resistance or sensitization is imperative. Here we report that tribbles homologue 2 (TRIB2) ablates forkhead box O activation and disrupts the p53/MDM2 regulatory axis, conferring resistance to various chemotherapeutics. TRIB2 suppression is exerted via direct interaction with AKT a key signalling protein in cell proliferation, survival and metabolism pathways...
March 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28274247/gossypol-has-anti-cancer-effects-by-dual-targeting-mdm2-and-vegf-in-human-breast-cancer
#12
Jing Xiong, Jiansha Li, Qin Yang, Jun Wang, Tiefen Su, Sheng Zhou
BACKGROUND: Mouse double minute 2 (MDM2) and vascular endothelial growth factor (VEGF) are important molecules involved in tumor progression. We researched potential inhibitors that simultaneously target MDM2 and VEGF. In our recent study involving the performance of high-throughput screening with a fluorescence polarization assay, gossypol was identified as one of the top hits that inhibit protein-RNA binding activity. Because MDM2 is an RNA-binding protein and its targets include VEGF mRNA, we investigated whether gossypol has an inhibitory effect on MDM2-VEGF...
March 9, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28270530/targeting-the-mdm2-p53-protein-protein-interaction-for-new-cancer-therapy-progress-and-challenges
#13
Shaomeng Wang, Yujun Zhao, Angelo Aguilar, Denzil Bernard, Chao-Yie Yang
MDM2 is a primary cellular inhibitor of p53. It inhibits p53 function by multiple mechanisms, each of which, however, is mediated by their direct interaction. It has been proposed that small-molecule inhibitors designed to block the MDM2-p53 interaction may be effective in the treatment of human cancer retaining wild-type p53 by reactivating the p53 tumor suppressor function. Through nearly two decades of intense efforts, a number of structurally distinct, highly potent, nonpeptide, small-molecule inhibitors of the MDM2-p53 interaction (MDM2 inhibitors) have been successfully designed and developed, and at least seven such compounds have now been advanced into human clinical trials as new anticancer drugs...
March 7, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28267263/genetic-analysis-of-uterine-adenosarcomas-and-phyllodes-tumors-of-the-breast
#14
Felipe C Geyer, Kathleen A Burke, Salvatore Piscuoglio, Charlotte K Y Ng, Anastasios D Papanastasiou, Caterina Marchiò, Pier Selenica, Marcia Edelweiss, Melissa P Murray, Edi Brogi, Robert A Soslow, Brian P Rubin, Larry Norton, Jorge S Reis-Filho, Britta Weigelt
Uterine adenosarcomas and breast phyllodes tumors (PTs) are morphologically similar, being composed of stromal projections in a leaf-like fashion lined by epithelial cells. Here we investigated whether their histologic similarities would be mirrored at the genetic level. The previously reported repertoires of somatic genetic alterations found in 19 adenosarcomas and 22 PTs (six benign, six borderline and 10 malignant) were compared. Phyllodes tumors significantly more frequently displayed mutations affecting MED12, the TERT gene promoter and bona fide cancer genes; whereas adenosarcomas harbored a higher rate of MDM2/CDK4 and TERT gene amplifications...
March 7, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28265066/resistance-mechanisms-to-tp53-mdm2-inhibition-identified-by-in-vivo-piggybac-transposon-mutagenesis-screen-in-an-arf-mouse-model
#15
Emilie A Chapeau, Agnieszka Gembarska, Eric Y Durand, Emeline Mandon, Claire Estadieu, Vincent Romanet, Marion Wiesmann, Ralph Tiedt, Joseph Lehar, Antoine de Weck, Roland Rad, Louise Barys, Sebastien Jeay, Stephane Ferretti, Audrey Kauffmann, Esther Sutter, Armelle Grevot, Pierre Moulin, Masato Murakami, William R Sellers, Francesco Hofmann, Michael Rugaard Jensen
Inhibitors of double minute 2 protein (MDM2)-tumor protein 53 (TP53) interaction are predicted to be effective in tumors in which the TP53 gene is wild type, by preventing TP53 protein degradation. One such setting is represented by the frequent CDKN2A deletion in human cancer that, through inactivation of p14ARF, activates MDM2 protein, which in turn degrades TP53 tumor suppressor. Here we used piggyBac (PB) transposon insertional mutagenesis to anticipate resistance mechanisms occurring during treatment with the MDM2-TP53 inhibitor HDM201...
March 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28260104/mir-92a-promotes-tumor-growth-of-osteosarcoma-by-targeting-pten-akt-signaling-pathway
#16
Jie Xiao, Weifeng Yu, Kongzu Hu, Maoqiang Li, Jianwei Chen, Zhanchun Li
MicroRNAs (miRNAs) play critical roles in human cancers including osteosarcoma (OS). miR-92a has been found to be a cancer-related miRNA in many cancer types and it is upregulated in OS cell lines. However, the expression and biological function of miR-92a in OS have not been investigated. In this study, we showed that miR-92a expression was increased in OS tissues, and its high expression was correlated with clinical stage, T classification and histological differentiation. Furthermore, patients with high expression of miR-92a had a significantly poorer survival rate...
March 2, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28258518/adrenocortical-carcinoma-arising-in-an-adrenal-rest-a-case-report-and-review-of-the-literature
#17
Kristine M Cornejo, Henrietta A Afari, Peter M Sadow
Carcinomas arising from embryonic adrenal rests are rare with only a handful of reported cases. We report a case of an adrenocortical carcinoma arising from an adrenal rest located between the bladder and prostate in a 51 year-old man. The patient presented following a year of rectal pain and constipation. Computed tomography (CT) scan revealed a 9 cm pelvic mass that appeared to arise from the soft tissue between the bladder and prostate, with displacement of the organs and narrowing of the rectal lumen, suspected to be a sarcoma...
March 3, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28258440/comprehensive-characterization-of-genes-associated-with-the-tp53-signal-transduction-pathway-in-various-tumors
#18
Shumpei Ohnami, Keiichi Ohshima, Takeshi Nagashima, Kenichi Urakami, Yuji Shimoda, Junko Saito, Akane Naruoka, Keiichi Hatakeyama, Tohru Mochizuki, Masakuni Serizawa, Sumiko Ohnami, Masatoshi Kusuhara, Ken Yamaguchi
The TP53 signal transduction pathway is an attractive target for cancer treatments. In this study, we conducted a comprehensive molecular evaluation of 907 patients with cancer in Japan to identify genomic alterations in the TP53 pathway. TP53 mutations were frequently detected in many cancers, except melanoma, thymic tumors, gastrointestinal stromal tumors, and renal cancers. The frequencies of non-synonymous single nucleotide variants (SNVs) in the TP53 family members TP63 and TP73 were relatively low, although genes with increased frequencies of SNVs were as follows: PTEN (11...
March 3, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28255749/analysis-of-ki67-hmga1-mdm2-and-rb-expression-in-nonfunctioning-pituitary-adenomas
#19
Xiaohui Yao, Hua Gao, Chuzhong Li, Lijuan Wu, Jiwei Bai, Jichao Wang, Yangfang Li, Yazhuo Zhang
Nonfunctioning pituitary adenomas (NFPAs) are the most prevalent type of pituitary macro-adenoma. Clarifying the relationship between NFPA markers and disease progression or recurrence could provide a basis for administration of adjuvant treatments. The present study examined the expression levels of high-mobility group (HMG)A1, Ki-67, mouse double minute 2 homolog (MDM2), and retinoblastoma (RB)with respect to NFPA recurrence. Immunohistochemistry was carried out using antibodies to Ki-67, MDM2, HMGA-1, and RB on tissue microarray slides of a cohort of 35 paired NFPA samples of primary and recurrence/regrowth tumors...
March 2, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28253504/genomic-characterization-of-a-metastatic-alveolar-rhabdomyosarcoma-case-using-fish-studies-and-cgh-snp-microarray-revealing-foxo1-pax7-rearrangement-with-mycn-and-mdm2-amplification-and-rb1-region-loss
#20
Arivarasan Karunamurthy, Lori Hoffner, Jie Hu, Peter Shaw, Sarangarajan Ranganathan, Svetlana A Yatsenko, Urvashi Surti
Rhabdomyosarcomas (RMS) are rare, heterogeneous, soft tissue sarcomas and a common type of childhood malignancy with a distinct histomorphology. At the molecular level, alveolar rhabdomyosarcoma (ARMS), a subtype of RMS, harbors a signature genetic makeup characterized by specific translocations. The type of translocation and associated genetic aberrations correlate with disease progression, hence we used multiple molecular modalities including high-resolution array comparative genomic hybridization to explore the oncogenic gene fusion and associated copy number variations in a case of metastatic ARMS...
March 3, 2017: Cytogenetic and Genome Research
keyword
keyword
1695
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"