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https://www.readbyqxmd.com/read/29423390/dual-effects-of-high-protein-diet-on-mouse-skin-and-colonic-inflammation
#1
Xuelei Cui, Eunjung Kim
Chronic inflammation is a major etiology of cancer. Accumulating epidemiological and experimental evidences suggest that intake of high protein diet (HPD) is associated with colitis-associated colon cancer, however, most of the studies were confined in colon. Systemic influence of HPD on inflammation indices in different tissues of an organism has never been studied. We therefore investigated the effect of HPD on mouse skin and colonic inflammation using the well characterized inflammation induction protocol in both tissues (12-O-tetradecanoylphorbol-13-acetate [TPA] for skin and dextran sodium sulfate [DSS] for colon)...
January 2018: Clinical Nutrition Research
https://www.readbyqxmd.com/read/29413610/genipin-stabilized-caseinatehitosan-nanoparticles-for-enhanced-stability-and-anti-cancer-activity-of-curcumin
#2
Muhamad Alif Razi, Rie Wakabayashi, Yoshiro Tahara, Masahiro Goto, Noriho Kamiya
Nanoparticles formed by the assembly of protein and polysaccharides are of great interest for the delivery of hydrophobic molecules. Herein, the formation of genipin-crosslinked nanoparticles from caseinate (CS) and chitosan (CH) is reported for the delivery of curcumin, a polyphenolic compound from turmeric, to cells. Genipin-crosslinked CS-CH nanoparticles (G-CCNPs) having a diameter of ∼250 nm and a low polydispersity index showed excellent stability over a wide pH range, as indicated by dynamic light scattering and transmission electron microscopic measurements...
January 31, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29384474/targeting-posttranslational-modifications-of-riok1-inhibits-the-progression-of-colorectal-and-gastric-cancers
#3
Xuehui Hong, He Huang, Xingfeng Qiu, Zhijie Ding, Xing Feng, Yuekun Zhu, Huiqin Zhuo, Jingjing Hou, Jiabao Zhao, Wangyu Cai, Ruihua Sha, Xinya Hong, Yongxiang Li, Hongjiang Song, Zhiyong Zhang
RIOK1 has recently been shown to play important roles in cancers, but its posttranslational regulation is largely unknown. Here we report that RIOK1 is methylated at K411 by SETD7 methyltransferase and that lysine-specific demethylase 1 (LSD1) reverses its methylation. The mutated RIOK1 (K411R) that cannot be methylated exhibits a longer half-life than does the methylated RIOK1. FBXO6 specifically interacts with K411-methylated RIOK1 through its FBA domain to induce RIOK1 ubiquitination. Casein kinase 2 (CK2) phosphorylates RIOK1 at T410, which stabilizes RIOK1 by antagonizing K411 methylation and impeding the recruitment of FBXO6 to RIOK1...
January 31, 2018: ELife
https://www.readbyqxmd.com/read/29382046/how-do-we-study-the-dynamic-structure-of-unstructured-proteins-a-case-study-on-nopp140-as-an-example-of-a-large-intrinsically-disordered-protein
#4
REVIEW
Jung-Hyun Na, Won-Kyu Lee, Yeon Gyu Yu
Intrinsically disordered proteins (IDPs) represent approximately 30% of the human genome and play key roles in cell proliferation and cellular signaling by modulating the function of target proteins via protein-protein interactions. In addition, IDPs are involved in various human disorders, such as cancer, neurodegenerative diseases, and amyloidosis. To understand the underlying molecular mechanism of IDPs, it is important to study their structural features during their interactions with target proteins. However, conventional biochemical and biophysical methods for analyzing proteins, such as X-ray crystallography, have difficulty in characterizing the features of IDPs because they lack an ordered three-dimensional structure...
January 27, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29376765/phytosomal-bilayer-enveloped-casein-micelles-for-codelivery-of-monascus-yellow-pigments-and-resveratrol-to-breast-cancer
#5
Shaymaa W El-Far, Maged W Helmy, Sherine N Khattab, Adnan A Bekhit, Ahmed A Hussein, Ahmed O Elzoghby
AIM: Multireservoir nanocarriers were fabricated for delivering antineoplastic drug cocktail from herbal and fungal origin. Monascus yellow pigments (MYPs), monascin and ankaflavin, were isolated from red-mold rice, and incorporated within casein micelles (CAS MCs) along with the herbal drug, resveratrol (RSV). Both drugs (MYPs and RSV) were simultaneously incorporated into the hydrophobic core of CAS MCs. Alternatively, MYPs-loaded CAS MCs were enveloped within RSV-phytosomal bilayer elaborating multireservoir nanocarriers...
January 29, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29373552/self-assembled-supramolecular-nanoparticles-improve-the-cytotoxic-efficacy-of-ck2-inhibitor-thn7
#6
Abdelhamid Nacereddine, Andre Bollacke, Eszter Róka, Christelle Marminon, Zouhair Bouaziz, Ferenc Fenyvesi, Ildikó Katalin Bácskay, Joachim Jose, Florent Perret, Marc Le Borgne
Since the approval of imatinib in 2001, kinase inhibitors have revolutionized cancer therapies. Inside this family of phosphotransferases, casein kinase 2 (CK2) is of great interest and numerous scaffolds have been investigated to design CK2 inhibitors. Recently, functionalized indeno[1,2-b]indoles have been revealed to have high potency against human cancer cell lines such as MCF-7 breast carcinoma and A-427 lung carcinoma. 4-Methoxy-5-isopropyl-5,6,7,8-tetrahydroindeno[1,2-b]indole-9,10-dione (THN7), identified as a potent inhibitor of CK2 (IC50 = 71 nM), was selected for an encapsulation study in order to evaluate its antiproliferative activity as THN7-loaded cyclodextrin nanoparticles...
January 26, 2018: Pharmaceuticals
https://www.readbyqxmd.com/read/29356905/actinidia-callosa-var-callosa-suppresses-metastatic-potential-of-human-hepatoma-cell-sk-hep1-by-inhibiting-matrix-metalloproteinase-2-through-pi3k-akt-and-mapk-signaling-pathways
#7
Jeng-Shyan Deng, Jui-Shu Chang, Jung-Chun Liao, Wei Chao, Ming-Ming Lee, Chien-Hua Cheng, Guan-Jhong Huang
BACKGROUND: Cancer cell metastasis involving multi-step procedures and cytophysiological property changes may make difficult in the clinical management and death rate increasing. RESULTS: In this study, we first observed that ethyl acetate fraction of Actinidia callosa var. callosa (EAAC) carry out a dose-dependent inhibitory effect without cytotoxicity on the mobility and invasion of highly metastatic SK-Hep1 cells. To investigate the EAAC in cancer metastasis, SK-Hep1 cells were treated with EAAC at various concentrations and then subjected to gelatin zymography, casein zymography and western blot to study the impacts of EAAC on metalloproteinase-2 (MMP-2) and tissue inhibitor of metalloproteinase-1/2 (TIMP-1/2), respectively...
January 22, 2018: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29289448/development-of-dual-casein-kinase-1%C3%AE-1%C3%AE%C2%B5-ck1%C3%AE-%C3%AE%C2%B5-inhibitors-for-treatment-of-breast-cancer
#8
Andrii Monastyrskyi, Napon Nilchan, Victor Quereda, Yoshihiko Noguchi, Claudia Ruiz, Wayne Grant, Michael Cameron, Derek Duckett, William Roush
Casein kinase 1δ/ε have been identified as promising therapeutic target for oncology application, including breast and brain cancer. Here, we described our continued efforts in optimization of a lead series of purine scaffold inhibitors that led to identification of two new CK1δ/ε inhibitors 17 and 28 displaying low nanomolar values in antiproliferative assays against the human MDA-MB-231 triple negative breast cancer cell line and have physical, in vitro and in vivo pharmacokinetic properties suitable for use in proof of principle animal xenograft studies against human cancers...
December 15, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29286069/a-16-gene-expression-signature-to-distinguish-stage%C3%A2-i-from-stage%C3%A2-ii-lung-squamous-carcinoma
#9
Rui Wang, Yuxing Cai, Baoping Zhang, Zhengxia Wu
The present study aimed to perform screening of a gene signature for the discrimination and prognostic prediction of stage I and II lung squamous carcinoma. A microarray meta‑analysis was performed to identify differentially expressed genes (DEGs) between stage I and II lung squamous carcinoma samples in seven microarray datasets collected from the Gene Expression Omnibus database via the MetaQC and MetaDE package in R. The important DEGs were selected according to the betweenness centrality value of the protein‑protein interaction (PPI) network...
December 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29250165/evaluating-the-associations-between-human-circadian-rhythms-and-dysregulated-genes-in-liver-cancer-cells
#10
Andrea Polo, Sakshi Singh, Anna Crispo, Marilina Russo, Aldo Giudice, Maurizio Montella, Giovanni Colonna, Susan Costantini
Network analysis is a useful approach in cancer biology as it provides information regarding the genes and proteins. In our previous study, a network analysis was performed on dysregulated genes in HepG2 cells, a hepatoblastoma cell line that lacks the viral infection, compared with normal hepatocytes, identifying the presence of 26 HUB genes. The present study aimed to identify whether these previously identified HUB genes participate in the network that controls the human circadian rhythms. The results of the present study demonstrated that 20/26 HUB genes were associated with the metabolic processes that control human circadian rhythms, which supports the hypothesis that a number of cancer types are dependent from circadian cycles...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29214152/identification-of-candidate-casein-kinase-2-substrates-in-mitosis-by-quantitative-phosphoproteomics
#11
Scott F Rusin, Mark E Adamo, Arminja N Kettenbach
Protein phosphorylation is a crucial regulatory mechanism that controls many aspects of cellular signaling. Casein kinase 2 (CK2), a constitutively expressed and active kinase, plays key roles in an array of cellular events including transcription and translation, ribosome biogenesis, cell cycle progression, and apoptosis. CK2 is implicated in cancerous transformation and is a therapeutic target in anti-cancer therapy. The specific and selective CK2 ATP competitive inhibitor, CX-4945 (silmitaseratib), is currently in phase 2 clinical trials...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/29191835/phosphorylation-of-human-enhancer-filamentation-1-hef1-stimulates-interaction-with-polo-like-kinase-1-leading-to-hef1-localization-to-focal-adhesions
#12
Kyung Ho Lee, Jeong-Ah Hwang, Sun-Ok Kim, Jung Hee Kim, Sang Chul Shin, Eunice EunKyeong Kim, Kyung S Lee, Kunsoo Rhee, Byeong Hwa Jeon, Jeong Kyu Bang, Hyunjoo Cha-Molstad, Nak-Kyun Soung, Jae-Hyuk Jang, Sung-Kyun Ko, Hee Gu Lee, Jong Seog Ahn, Yong Tae Kwon, Bo Yeon Kim
Elevated expression of human enhancer filamentation 1 (HEF1; also known as NEDD9 or Cas-L) is an essential stimulus for the metastatic process of various solid tumors. This process requires HEF1 localization to focal adhesions (FAs). Although the association of HEF1 with FAs is considered to play a role in cancer cell migration, the mechanism targeting HEF1 to FAs remains unclear. Moreover, upregulation of polo-like kinase 1 (Plk1) positively correlates with human cancer metastasis, yet how Plk1 deregulation promotes metastasis remains elusive...
November 30, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29142273/a-novel-medium-for-enhancing-callus-growth-of-hazel-corylus-avellana-l
#13
Mina Salehi, Ahmad Moieni, Naser Safaie
Paclitaxel is a powerful antimitotic agent with excellent activity against a range of cancers. Hazel has been described as a paclitaxel-producing species among angiosperms. Fast-growing callus is a prerequisite for the success of callus production and then paclitaxel production. Therefore, optimizing the medium culture for enhancing callus growth is a crucial step for paclitaxel production. In this research, Murashige and Skoog (1962) (MS) medium was optimized for improving callus growth of hazel (Corylus avellana L...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141220/phosphorylation-and-ubiquitination-regulate-protein-phosphatase-5-activity-and-its-prosurvival-role-in-kidney-cancer
#14
Natela Dushukyan, Diana M Dunn, Rebecca A Sager, Mark R Woodford, David R Loiselle, Michael Daneshvar, Alexander J Baker-Williams, John D Chisholm, Andrew W Truman, Cara K Vaughan, Timothy A Haystead, Gennady Bratslavsky, Dimitra Bourboulia, Mehdi Mollapour
The serine/threonine protein phosphatase 5 (PP5) regulates multiple cellular signaling networks. A number of cellular factors, including heat shock protein 90 (Hsp90), promote the activation of PP5. However, it is unclear whether post-translational modifications also influence PP5 phosphatase activity. Here, we show an "on/off switch" mechanism for PP5 regulation. The casein kinase 1δ (CK1δ) phosphorylates T362 in the catalytic domain of PP5, which activates and enhances phosphatase activity independent of Hsp90...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29113166/expression-of-circadian-clock-genes-in-human-colorectal-adenoma-and-carcinoma
#15
Tomoyuki Momma, Hirokazu Okayama, Masaru Saitou, Hidekazu Sugeno, Nobuhiro Yoshimoto, Yuji Takebayashi, Shinji Ohki, Seiichi Takenoshita
Circadian rhythms are fundamental biological systems in most organisms. Epidemiological and animal studies have demonstrated that disruption of circadian rhythms is linked to tumor progression and mammalian tumorigenesis. However, the clinical significance of in situ clock gene expression in precancerous and cancerous colorectal lesions remains unknown. The present study aimed to investigate mRNA transcript levels of circadian clock genes within human colorectal cancer and adenoma tissue sections. Using in situ hybridization, the expression of key clock genes, including period circadian protein homolog (Per) 1 and 2, cryptochrome 1 (Cry1), circadian locomoter output cycles protein kaput (Clock), brain and muscle ARNT-like protein 1 (Bmal1) and casein kinase 1ε (CK1ε) were retrospectively examined in 51 cases of colorectal carcinoma and 10 cases of adenoma...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29104459/effects-of-oral-glutamine-on-inflammatory-and-autophagy-responses-in-cancer-patients-treated-with-abdominal-radiotherapy-a-pilot-randomized-trial
#16
Juan J Ortiz de Urbina, Beatriz San-Miguel, Alfonso Vidal-Casariego, Irene Crespo, Diana I Sánchez, José L Mauriz, Jesús M Culebras, Javier González-Gallego, María J Tuñón
Background and Aims: Abdominal radiotherapy (RT) causes harm to the mid gastrointestinal mucosa by release of pro-inflammatory cytokines and promotes autophagic changes in tumor cells. This study was aimed to measure the effect of glutamine administration on markers of inflammation and autophagy in cancer patients treated with RT. Methods: In this double-blind, randomized, controlled pilot trial 43 patients under abdominal RT diagnosed of pelvic or abdominal malignancies receiving glutamine (30 g/d) or placebo (casein, 30 g/d)...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29069804/progesterone-receptor-membrane-component-1-is-phosphorylated-upon-progestin-treatment-in-breast-cancer-cells
#17
Marina Willibald, Giuliano Bayer, Vanessa Stahlhut, Gereon Poschmann, Kai Stühler, Berthold Gierke, Michael Pawlak, Harald Seeger, Alfred O Mueck, Dieter Niederacher, Tanja Fehm, Hans Neubauer
Menopausal hormone therapy, using estrogen and synthetic progestins, is associated with an increased risk of developing breast cancer. The effect of progestins on breast cells is complex and not yet fully understood. In previous in vitro and in vivo studies, we found different progestins to increase the proliferation of Progesterone Receptor Membrane Component-1 (PGRMC1)-overexpressing MCF7 cells (MCF7/PGRMC1), suggesting a possible role of PGRMC1 in transducing membrane-initiated progestin signals. Understanding the activation mechanism of PGRMC1 by progestins will provide deeper insights into the mode of action of progestins on breast cells and the often-reported phenomenon of elevated breast cancer rates upon progestin-based hormone therapy...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29042609/structural-analysis-of-pim1-kinase-complexes-with-atp-competitive-inhibitors
#18
Jozefina Bogusz, Karol Zrubek, Krzysztof P Rembacz, Przemyslaw Grudnik, Przemyslaw Golik, Malgorzata Romanowska, Benedykt Wladyka, Grzegorz Dubin
PIM1 is an oncogenic kinase overexpressed in a number of cancers where it correlates with poor prognosis. Several studies demonstrated that inhibition of PIM1 activity is an attractive strategy in fighting overexpressing cancers, while distinct structural features of ATP binding pocket make PIM1 an inviting target for the design of selective inhibitors. To facilitate development of specific PIM1 inhibitors, in this study we report three crystal structures of ATP-competitive inhibitors at the ATP binding pocket of PIM1...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29033852/activation-of-casein-kinase-ii-by-gallic-acid-induces-bik-bax-bak-mediated-er-ca-ros-dependent-apoptosis-of-human-oral-cancer-cells
#19
Meng-Liang Lin, Shih-Shun Chen
Induction of the generation of endoplasmic reticulum (ER) calcium (Ca(++))-mediated reactive oxygen species (ROS) by gallic acid (GA) has been implicated in the mitochondrial apoptotic death of human oral cancer (OC) cells, but the molecular mechanism by which GA causes ER Ca(++) release of OC cells to undergo cell death remains unclear. Here, we report that GA-induced phosphorylation of B-cell lymphoma 2 (BCL-2)-interacting killer (BIK) (threonine (Thr) 33/Serine (Ser) 35) and p53 (Ser 15 and Ser 392), Bcl-2-associated x protein (BAX)/BCL-2 antagonist killer 1 (BAK) oligomerization on the ER and mitochondria, rising of cytosolic Ca(+)(+) and ROS, cytochrome c (Cyt c) release from the mitochondria, Ψm loss, and apoptosis were suppressed in cells co-treated with a specific inhibitor of casein kinase II (CK II) (4,5,6,7-tetrabromobenzotriazole)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28945225/oncogenic-ras-induced-ck1%C3%AE-drives-nuclear-foxo-proteolysis
#20
F Zhang, D M Virshup, J K Cheong
Evasion of forkhead box O (FOXO) family of longevity-related transcription factors-mediated growth suppression is necessary to promote cancer development. Since somatic alterations or mutations and transcriptional dysregulation of the FOXO genes are infrequent in human cancers, it remains unclear how these tumour suppressors are eliminated from cancer cells. The protein stability of FOXO3A is regulated by Casein Kinase 1 alpha (CK1α) in an oncogenic RAS-specific manner, but whether this mode of regulation extends to related FOXO family members is unknown...
September 25, 2017: Oncogene
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