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https://www.readbyqxmd.com/read/28619086/patterns-of-venous-thromboembolism-risk-in-patients-with-localized-colorectal-cancer-undergoing-adjuvant-chemotherapy-or-active-surveillance-an-observational-cohort-study
#1
Jakob Michael Riedl, Florian Posch, Angelika Bezan, Joanna Szkandera, Maria Anna Smolle, Thomas Winder, Christopher H Rossmann, Renate Schaberl-Moser, Martin Pichler, Michael Stotz, Herbert Stöger, Armin Gerger
BACKGROUND: Venous thromoboembolism (VTE) is a frequent and burdensome complication of metastatic colorectal cancer (CRC). However, the epidemiology of VTE in patients with localized CRC after surgery in curative intent is incompletely understood. In this single-center observational cohort study, we investigate patterns of VTE risk in localized CRC, and define its relationship with baseline risk factors, adjuvant chemotherapy and CRC recurrence. METHODS: Five-hundred-sixteen patients with stage II/III CRC were included retrospectively at the time of surgery, and followed until the occurrence of VTE, CRC recurrence, or death (median age = 65...
June 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28580709/early-ovariectomy-reveals-the-germline-encoding-of-natural-anti-a-and-tn-cross-reactive-immunoglobulin-m-igm-arising-from-developmental-o-galnac-glycosylations-germline-encoded-natural-anti-a-tn-cross-reactive-igm
#2
Peter Arend
While native blood group A-like glycans have not been demonstrated in prokaryotic microorganisms as a source of human "natural" anti-A isoagglutinin production, and metazoan eukaryotic N-acetylgalactosamine O-glycosylation of serine or threonine residues (O-GalNAc-Ser/Thr-R) does not occur in bacteria, the O-GalNAc glycan-bearing ovarian glycolipids, discovered in C57BL/10 mice, are complementary to the syngeneic anti-A-reactive immunoglobulin M (IgM), which is not present in animals that have undergone ovariectomy prior to the onset of puberty...
June 5, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28577130/gemcitabine-cisplatin-treatment-induces-concomitant-sertad1-cdkn2b-and-gadd45a-modulation-and-cellular-changes-in-bladder-cancer-cells-regardless-of-the-site-of-tp53-mutation
#3
Glenda Nicioli da Silva, Leandro Toshio Filoni, Maria Cecília Salvadori, Daisy Maria Fávero Salvadori
Simultaneous use of cisplatin (CIS) and gemcitabine (GEN) for treating bladder cancer has increased because of their complementary effects. However, the molecular mechanisms underlying the activities of these two antineoplastic drugs are not fully known. Here, molecular biology techniques and microscopy were used to investigate transcriptomic and morphological changes in low and high-grade urinary bladder transitional carcinoma cell lines [RT4 - wild type TP53; 5637 - two TP53 mutations, one in codon 72 (Arg-Pro) and other in codon 280 (Arg-Thr) and T24 - in-frame deletion of tyrosine 126 in the TP53 allele] simultaneously treated with CIS/GEN...
June 2, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28530534/biological-evaluation-of-99mtc-hynic-edda-tricine-ser-3-d4-peptide-for-tumor-targeting
#4
Ziba Kazemi, Mona Haddad Zahmatkesh, Seyed Mohammad Abedi, Seyed Jalal Hosseinimehr
BACKGROUND: D4 small peptide (Leu-Ala-Arg-Leu-Leu-Thr) was selected as an appropriate agent for specific targeting of epidermal growth factor receptor (EGFR). OBJECTIVE: The aim of study was to investigate the 99mTc-labeled D4 peptide for non small cell lung tumor targeting. METHOD: HYNIC-(Ser)3-D4 peptide was labeled with 99mTc using mixture of tricine and ethylenediamine diacetic acid (EDDA) as co-ligands. The in vitro cellular uptake of radiolabebled peptide was evaluated by blocking test on human non small lung cancer (A-549) cell line and its biodistribution was evaluated in A-549 xenografted nude mice...
May 19, 2017: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/28510570/bag-1-as-a-biomarker-in-early-breast-cancer-prognosis-a-systematic-review-with-meta-analyses
#5
E S Papadakis, T Reeves, N H Robson, T Maishman, G Packham, R I Cutress
BACKGROUND: The co-chaperone protein Bcl-2-associated athanogene-1 (BAG-1) is overexpressed in breast cancer and has been incorporated in the oncotype DX and PAM50 breast cancer prognostic assays. Bcl-2-associated athanogene-1 exists as multiple protein isoforms that interact with diverse partners, including chaperones Hsc70/Hsp70, Ser/Thr kinase Raf-1 and Bcl-2, to promote cancer cell survival. The BAG-1L isoform specifically binds to and increases the transcriptional activity of oestrogen receptor in cells, and in some, but not all studies, BAG-1 expression is predictive of clinical outcome in breast cancer...
June 6, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28488246/potential-coordination-role-between-o-glcnacylation-and-epigenetics
#6
REVIEW
Donglu Wu, Yong Cai, Jingji Jin
Dynamic changes of the post-translational O-GlcNAc modification (O-GlcNAcylation) are controlled by O-linked β-N-acetylglucosamine (O-GlcNAc) transferase (OGT) and the glycoside hydrolase O-GlcNAcase (OGA) in cells. O-GlcNAcylation often occurs on serine (Ser) and threonine (Thr) residues of the specific substrate proteins via the addition of O-GlcNAc group by OGT. It has been known that O-GlcNAcylation is not only involved in many fundamental cellular processes, but also plays an important role in cancer development through various mechanisms...
May 9, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28486685/inhibition-of-ser-thr-phosphatase-ppm1d-induces-neutrophil-differentiation-in-hl-60-cells
#7
Rui Kamada, Fuki Kudoh, Fumihiko Yoshimura, Keiji Tanino, Kazuyasu Sakaguchi
Protein phosphatase Magnesium-dependent 1, Delta (PPM1D) is a wild-type p53-inducible Ser/Thr phosphatase that acts as a negative regulator of the p53 tumor suppressor. Gene amplification and overexpression of PPM1D have been reported in various cancers including leukemia and neuroblastoma. Therefore, PPM1D is a promising target in cancer therapy. It has been reported that PPM1D knockout mice exhibit neutrophilia in blood and show a defective immune response. Here, we found that inhibition of PPM1D induced neutrophil differentiation of human promyelocytic leukemia cell line HL-60...
May 9, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/28477117/studies-of-atm-kinase-activity-using-engineered-atm-sensitive-to-atp-analogues-atm-as
#8
Masato Enari, Yuko Matsushima-Hibiya, Makoto Miyazaki, Ryo Otomo
Ataxia-telangiectasia mutated (ATM) protein is a member of the phosphatidylinositol 3-phosphate kinase (PI3-K)-related protein kinase (PIKK) family and is implicated in the initiation of signaling pathways following DNA double strand breaks (DSBs) elicited by exposure to ionizing irradiation (IR) or radiomimetic compounds. Loss of function of the ATM gene product results in the human genetic disorder ataxia-telangiectasia (A-T) characterized by neurodegeneration, immunodeficiency, genomic instability, and cancer predisposition...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28476656/defining-the-role-of-the-rsk-isoforms-in-cancer
#9
REVIEW
Thibault Houles, Philippe P Roux
The 90kDa ribosomal S6 kinase (RSK) family is a group of Ser/Thr protein kinases (RSK1-4) that function downstream of the Ras/mitogen-activated protein kinase (MAPK) signalling pathway. RSK regulates many substrates involved in cell survival, growth, and proliferation, and as such, deregulated RSK activity has been associated with multiple cancer types. RSK expression and activity are dysregulated in several malignancies, including breast, prostate, and lung cancer, and available evidence suggests that RSK may be a promising cancer therapeutic target...
May 2, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28460125/how-protein-kinase-a-activates-canonical-tyrosine-kinase-signaling-pathways-to-promote-granulosa-cell-differentiation
#10
Nathan C Law, Elyse M Donaubauer, Anthony J Zeleznik, Mary Hunzicker-Dunn
Protein kinase A (PKA) has recently been shown to mimic the actions of follicle-stimulating hormone (FSH) by activating signaling pathways that promote granulosa cell (GC) differentiation, such as phosphatidylinositol 3-kinase (PI3K) and mitogen activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK). We sought to elucidate the mechanism by which PKA, a Ser/Thr kinase, intersected the PI3K/AKT and MAPK/ERK pathways that are canonically activated by receptor tyrosine kinases (RTKs). Our results show that for both of these pathways, the RTK is active in the absence of FSH yet signaling down the pathways to commence transcriptional responses requires FSH-stimulated PKA activation...
April 28, 2017: Endocrinology
https://www.readbyqxmd.com/read/28448495/dysregulation-of-inf2-mediated-mitochondrial-fission-in-spop-mutated-prostate-cancer
#11
Xiaofeng Jin, Jie Wang, Kun Gao, Pingzhao Zhang, Longfang Yao, Yan Tang, Lisha Tang, Jian Ma, Jiantao Xiao, Enceng Zhang, Jie Zhu, Bin Zhang, Shi-Min Zhao, Yao Li, Shancheng Ren, Haojie Huang, Long Yu, Chenji Wang
Next-generation sequencing of the exome and genome of prostate cancers has identified numerous genetic alternations. SPOP (Speckle-type POZ Protein) was one of the most frequently mutated genes in primary prostate cancer, suggesting SPOP is a potential driver of prostate cancer development and progression. However, how SPOP mutations contribute to prostate cancer pathogenesis remains poorly understood. SPOP acts as an adaptor protein of the CUL3-RBX1 E3 ubiquitin ligase complex that generally recruits substrates for ubiquitination and subsequent degradation...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28431929/effects-of-naturally-occurring-charged-mutations-on-the-structure-stability-and-binding-of-the-pin1-ww-domain
#12
Xiaoya Qiao, Ying Liu, Liting Luo, Lei Chen, Caixian Zhao, Xuanjun Ai
Pin1 is a peptidyl-prolyl cis-trans isomerase, whose WW domain specifically recognizes the pSer/Thr-Pro motif. Pin1 is involved in multiple phosphorylation events that regulate the activities of various substrates, and Pin1 deregulation has been reported in various diseases, including cancer and Alzheimer's disease. The WW domain of Pin1 has been used as a small model protein to investigate the folding mechanisms of the β-sheet structure by studying the effect of mutations or its naturally occurring variants...
May 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28431241/akt-pkb-signaling-navigating-the-network
#13
REVIEW
Brendan D Manning, Alex Toker
The Ser and Thr kinase AKT, also known as protein kinase B (PKB), was discovered 25 years ago and has been the focus of tens of thousands of studies in diverse fields of biology and medicine. There have been many advances in our knowledge of the upstream regulatory inputs into AKT, key multifunctional downstream signaling nodes (GSK3, FoxO, mTORC1), which greatly expand the functional repertoire of AKT, and the complex circuitry of this dynamically branching and looping signaling network that is ubiquitous to nearly every cell in our body...
April 20, 2017: Cell
https://www.readbyqxmd.com/read/28427860/differential-mtor-pathway-profiles-in-bladder-cancer-cell-line-subtypes-to-predict-sensitivity-to-mtor-inhibition
#14
Andrew M Hau, Manando Nakasaki, Kazufumi Nakashima, Goutam Krish, Donna E Hansel
BACKGROUND: Molecular classification of bladder cancer has been increasingly proposed as a potential tool to predict clinical outcomes and responses to chemotherapy. Here we focused on mechanistic target of rapamycin (mTOR) inhibition as a chemotherapeutic strategy and characterized the expression profile of mTOR signaling targets in representative bladder cancer cell lines from basal, luminal, and either basal/luminal ("non-type") molecular subtypes. MATERIALS AND METHODS: Protein and mRNA expression of mTOR signaling components from representative luminal (RT4 and RT112), basal (SCaBER and 5637), and nontype (T24 and J82) bladder cancer cell line subtypes were determined by Western blot and database mining analysis of the Cancer Cell Line Encyclopedia...
April 18, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28423719/ampk%C3%AE-phosphatase-ppm1e-upregulation-in-human-gastric-cancer-is-required-for-cell-proliferation
#15
Min-Bin Chen, Yuan-Yuan Liu, Li-Bo Cheng, Jian-Wei Lu, Ping Zeng, Pei-Hua Lu
Activation of AMP-activated protein kinase (AMPK) is a valuable anti-cancer strategy. In the current study, we tested expression and potential function of Ca2+/calmodulin-dependent protein kinase phosphatase (Ppm1E), an AMPKα phosphatase, in human gastric cancers. Ppm1E expression was elevated in human gastric cancer tissues (vs. normal tissues), which was correlated with AMPK (p-AMPKα, Thr-172) dephosphorylation and mTOR complex 1 (mTORC1) activation. Ppm1E upregulation, AMPK inhibition and mTORC1 activation were also observed in human gastric cancer cell lines (AGS, HGC-27, and SNU601)...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28419225/epitope-mapping-of-a-new-anti-tn-antibody-detecting-gastric-cancer-cells
#16
Nina Persson, Nicolai Stuhr-Hansen, Christian Risinger, Stefan Mereiter, António Polónia, Karol Polom, András Kovács, Franco Roviello, Celso A Reis, Charlotte Welinder, Lena Danielsson, Bo Jansson, Ola Blixt
Here, we introduce a novel scFv antibody, G2-D11, specific for two adjacent Tn-antigens (GalNAc-Ser/Thr) binding equally to three dimeric forms of the epitope, Ser-Thr, Thr-Thr and Thr-Ser. Compared to other anti-Tn reagents, the binding of G2-D11 is minimally influenced by the peptide structure, which indicates a high degree of carbohydrate epitope dominance and a low influence from the protein backbone. With a high affinity (KDapp = 1.3 × 10-8 M) and no cross-reactivity to either sialyl-Tn epitope or blood group A antigens, scFv G2-D11 is an excellent candidate for a well-defined anti-Tn-antigen reagent...
July 1, 2017: Glycobiology
https://www.readbyqxmd.com/read/28415805/regulatory-functional-territory-of-plk-1-and-their-substrates-beyond-mitosis
#17
REVIEW
Shiv Kumar, Garima Sharma, Chiranjib Chakraborty, Ashish Ranjan Sharma, Jaebong Kim
Polo-like kinase 1 (PLK-1) is a well-known (Ser/Thr) mitotic protein kinase and is considered as a proto-oncogene. As hyper-activation of PLK-1 is broadly associated with poor prognosis and cancer progression, it is one of the most extensively studied mitotic kinases. During mitosis, PLK-1 regulates various cell cycle events, such as spindle pole maturation, chromosome segregation and cytokinesis. However, studies have demonstrated that the role of PLK-1 is not only restricted to mitosis, but PLK-1 can also regulate other vital events beyond mitosis, including transcription, translation, ciliogenesis, checkpoint adaptation and recovery, apoptosis, chromosomes dynamics etc...
June 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28398603/kctd20-promotes-the-development-of-non-small-cell-lung-cancer-through-activating-fak-akt-pathway-and-predicts-poor-overall-survival-of-patients
#18
Xiupeng Zhang, Haijing Zhou, Lin Cai, Chuifeng Fan, Yang Liu, Liang Wang, Qingchang Li, Yuan Miao
Kctd20 (potassium channel tetramerization protein domain containing 20) is a positive regulator of Akt signaling. However, the role of Kctd20 during the course of tumorigenesis and development is unclear. Using immunohistochemistry, we demonstrated that, in non-small cell lung cancer (NSCLC) patients, Kctd20 protein expression significantly correlates with advanced TNM stage (P < 0.001), positive status for regional lymph node metastasis (P = 0.019), and poor overall survival (P = 0.013). Proliferation and invasion assays showed that Kctd20 dramatically promotes the proliferation and invasion of NSCLC cells (P = 0...
April 11, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28398143/a-theoretical-study-on-the-stability-of-cnt-encased-cyclic-peptide-beyond-hydrogen-bond-cut-off
#19
Subramanian Vidhyasankar, Nallasamy Dharmaraj, Ponmalai Kolandaivel
The Carbon nanotubes (CNT) are potential candidate for many biomedical applications especially in targeted drug delivery for cancer diseases. However, the use of CNT has limitations due to its insolubility in aqueous media. The self-assembly of cyclic peptide encased on the CNT has enhanced its dispersion in aqueous medium which extend their applications as antibacterial and drug delivery agents. To understand this process, an attempt has been made to investigate the dynamics and stability of trimer cyclic peptide encasing with CNT using classical molecular dynamics...
April 16, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28394001/pharmacokinetics-biodistribution-and-antitumour-effects-of-sclerotium-rolfsii-lectin-in-mice
#20
S Anupama, Preeti Laha, Mamta Sharma, Kamal Pathak, Sanjay Bane, Arvind D Ingle, Vikram Gota, Rajiv D Kalraiya, Lu-Gang Yu, Jonathan M Rhodes, Bale M Swamy, Shashikala R Inamdar
Sclerotium rolfsii lectin (SRL) is a lectin isolated from the fungus Sclerotium rolfsii and has exquisite binding specificity towards the oncofetal Thomsen-Friedenreich antigen (TF-Ag; Galβ1-3GalNAcα-O-Ser/Thr) and its derivatives. Previous studies have shown that SRL inhibits the proliferation of human colon, breast and ovarian cancer cells in vitro and suppresses tumour growth in mice when introduced intratumourally. The present study assessed the effect of SRL on tumour growth when introduced intraperitoneally in BALB/c nude mice and investigated the pharmacokinetics and biodistribution of SRL in Swiss albino mice...
April 3, 2017: Oncology Reports
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