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https://www.readbyqxmd.com/read/29786804/-protein-deficiency-a-rare-nutrient-deficiency
#1
Gunnar Johansson
There is a widespread myth that we have to be careful about what we eat so that we do not cause protein deficiency. We know today that it is virtually impossible to design a calorie-sufficient diet, whether it is based on meat, fish, eggs, various vegetarian diets or even unprocessed whole natural plant foods, which is lacking in protein and any of the amino acids. The body is capable of taking incomplete proteins and making them complete by utilizing the amino acid recycling mechanism. The majority of amino acids absorbed from the intestinal tract are derived from recycled body protein...
May 21, 2018: Läkartidningen
https://www.readbyqxmd.com/read/29786793/a-method-for-prostate-and-breast-cancer-cell-spheroid-cultures-using-gelatin-methacryloyl-based-hydrogels
#2
Christoph Meinert, Christina Theodoropoulos, Travis J Klein, Dietmar W Hutmacher, Daniela Loessner
Modern tissue engineering technologies have delivered tools to recreate a cell's naturally occurring niche in vitro and to investigate normal and pathological cell-cell and cell-niche interactions. Hydrogel biomaterials mimic crucial properties of native extracellular matrices, including mechanical support, cell adhesion sites and proteolytic degradability. As such, they are applied as 3D cell culture platforms to replicate tissue-like architectures observed in vivo, allowing physiologically relevant cell behaviors...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786792/protocols-for-the-study-of-taxanes-chemosensitivity-in-prostate-cancer
#3
M Luz Flores, Carmen Sáez
Prostate cancer is major cause of cancer-related death among men in Western countries. Locally advanced prostate cancers are treated with castration therapy, which is initially effective, but after months the disease progresses to a hormone-refractory state whose treatment is chemotherapy based on taxanes. Although taxanes improve the survival of patients with castration-resistant prostate cancers, these patients often develop chemotherapy resistance, and new therapeutic strategies are necessary. Taxanes exert their action through interaction with β-tubulin which triggers cell cycle arrest in mitosis and the subsequent induction of the intrinsic apoptotic pathway...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786784/generation-of-prostate-cancer-patient-derived-xenografts-to-investigate-mechanisms-of-novel-treatments-and-treatment-resistance
#4
Hung-Ming Lam, Holly M Nguyen, Eva Corey
Treatment advances lead to survival benefits of patients with advanced prostate cancer. These treatments are highly efficacious in a subset of patients; however, similarly to other cancers, after initial responses the tumors develop resistance (acquired resistance) and the patients succumb to the disease. Furthermore, there is a subset of patients who do not respond to the treatment at all (de novo resistance). Preclinical testing using patient-derived xenografts (PDXs) has led to successful drug development, and PDXs will continue to provide valuable resources to generate clinically relevant data with translational potential...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786770/the-extract-of-leonurus-sibiricus-transgenic-roots-with-atpap1-transcriptional-factor-induces-apoptosis-via-dna-damage-and-down-regulation-of-selected-epigenetic-factors-in-human-cancer-cells
#5
Przemysław Sitarek, Tomasz Kowalczyk, Simona Santangelo, Adam J Białas, Monika Toma, Joanna Wieczfinska, Tomasz Śliwiński, Ewa Skała
The aim of this study was to determine the anticancer potential of Leonurus sibiricus extract derived from in vitro transgenic roots transformed by Agrobacetrium rhizogenes with AtPAP1 transcriptional factor, and that of transformed roots without construct, on grade IV human glioma cells and the U87MG cell line, and attempt to characterize the mechanism involved in this process. The anticancer effect induced by the tested extracts was associated with DNA damage, PARP cleavage/increased H2A.X histone levels and UHRF-1/DNMT1 down-regulation of mRNA levels...
May 21, 2018: Neurochemical Research
https://www.readbyqxmd.com/read/29786746/luteolin-induces-myelodysplastic-syndrome%C3%A2-derived-cell-apoptosis-via-the-p53%C3%A2-dependent-mitochondrial-signaling-pathway-mediated-by-reactive-oxygen-species
#6
Weimin Dong, Yan Lin, Yang Cao, Yue Liu, Xiaobao Xie, Weiying Gu
Luteolin, a common dietary flavonoid, induces the apoptosis of cells in several types of cancer. However, its role in myelodysplastic syndrome (MDS) and the potential underlying mechanisms remain to be elucidated. To evaluate the potential benefit and underlying mechanisms of luteolin in MDS cells, the viability of SKM‑1 cells and primary bone marrow (PBM) mononuclear cells from patients with intermediate‑ or high‑risk MDS were assessed using a Cell Counting Kit‑8 assay. The apoptotic features of cell morphology were assessed using Wright‑Giemsa staining, DNA fragmentation was analyzed by agarose gel electrophoresis, and the extent of apoptosis was quantified by flow cytometry (FCM)...
May 18, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29786602/microfluidic-system-for-modelling-3d-tumour-invasion-into-surrounding-stroma-and-drug-screening
#7
Zhichang Du, Shengli Mi, Xiaoman Yi, Yuanyuan Xu, Wei Sun
Tumour invasion into the surrounding stroma is a critical step in metastasis, and it is necessary to clarify the role of microenvironmental factors in tumour invasion. We present a microfluidic system that simulated and controlled multi-factors of the tumour microenvironment for three-dimensional (3D) assessment of tumour invasion into the stroma. The simultaneous, precise and continuous arrangement of two 3D matrices was visualised to observe the migration of cancer cell populations or single cells by transfecting cells with a fluorescent protein...
May 22, 2018: Biofabrication
https://www.readbyqxmd.com/read/29786427/diallyl-trisulfide-induces-apoptosis-of-human-papillary-thyroid-carcinoma-bcpap-cells-through-activating-mapk-signaling-pathway
#8
Jie Pan, Li Zhang, Shichen Xu, Xian Cheng, Huixin Yu, Jiandong Bao, Rong-Rong Lu
This study aimed to elucidate the potential effects of diallyl trisulfide (DATS) on human papillary thyroid carcinoma BCPAP cells and its underling mechanisms. DATS is one of the organosulfur compounds which derived from garlic. In this study, we demonstrated that compared to the solvent control, DATS treatment at concentrations of 5, 10 and 20 μΜ decreased cell survival rate of BCPAP cells to 84.51 ± 2.67%, 57.16 ± 1.18%, 41.22 ± 1.19% respectively. DATS also caused cell cycle arrest at G0/G1 phase and the proportion of cells arrested in G0/G1 phase rose from 68...
May 22, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29786107/e3-ubiquitin-ligase-hakai-regulates-cell-growth-and-invasion-and-increases-the-chemosensitivity-to-cisplatin-in-non%C3%A2-small%C3%A2-cell-lung-cancer-cells
#9
Zi Liu, Yuqing Wu, Zijian Tao, Liang Ma
Hakai was originally identified as an E3 ubiquitin ligase of the E‑cadherin complex implicated in cell adhesion and invasion. Recently, emerging evidence has strongly suggested that Hakai serves a pivotal role in the tumorigenesis of certain tumors. However, the role of Hakai in non‑small‑cell lung cancer (NSCLC) and its underlying molecular mechanism have not been clarified. In the present study, it was observed that Hakai was highly expressed in NSCLC cell lines compared with human normal bronchial epithelial cells, and transfection with Hakai small interfering RNA significantly inhibited the growth of A549 and NCI‑H460 NSCLC cells...
May 17, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29786073/integrin-%C3%AE-6%C3%AE-4-src-akt-signaling-induces-cellular-senescence-by-counteracting-apoptosis-in-irradiated-tumor-cells-and-tissues
#10
Seung Hee Jung, Minyoung Lee, Hyun A Park, Hyung Chul Lee, Donghee Kang, Hyun Jung Hwang, Chanho Park, Dong-Min Yu, Yu Ri Jung, Mi-Na Hong, Yong-Nyun Kim, Heon Joo Park, Young-Gyu Ko, Jae-Seon Lee
Cellular senescence refers to an irreversible growth arrest that is triggered by various intrinsic and extrinsic stresses. Many recent studies have demonstrated that cellular senescence plays a crucial role in the regression of tumors exposed to ionizing radiation (IR), but the underlying mechanism remains unknown. Here we show that the activation of integrin β4 is essential for IR-induced cellular senescence. IR treatment results in the phosphorylation of integrin β4 at tyrosine residue 1510, leading to activation of the integrin α6β4-Src-AKT signaling pathway...
May 21, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29785943/-roles-and-molecular-mechanisms-of-hypoxia-inducible-factors-in-renal-cell-carcinoma
#11
Jun Xia Zou, Ke Chen
Renal cancer is a common urologic malignancy. However, the therapeutic options for metastatic renal cancer patients are limited. Hypoxia (low oxygen) is a fundamental microenvironmental determinant of solid tumor pathophysiology. Recent data from molecular and clinical studies indicate that hypoxia-inducible factors (HIFs) play critical roles in the development and progress of renal cell carcinoma (RCC). The HIF transcription factor family is a type of heterodimeric transcription factor consisting of HIF-α and HIF-β subunits and can transcriptionally activate genes that mediate the hypoxic response...
May 20, 2018: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/29785875/egfr-tkis-in-non-small-cell-lung-cancer-focus-on-clinical-pharmacology-and-mechanisms-of-resistance
#12
Stefano Fogli, Beatrice Polini, Marzia Del Re, Iacopo Petrini, Antonio Passaro, Stefania Crucitta, Eleonora Rofi, Romano Danesi
The clinical introduction of EGFR-TKIs within the oncologic armamentarium has changed the therapeutic landscape of non-small-cell lung cancer (NSCLC) creating widespread expectations both in patients and clinicians. However, several gaps in current understanding leave open important questions regarding the use of these drugs in clinical practice. For instance, there is uncertainty in regard to which EGFR-TKI should be given first in naive patients with EGFR-driven malignancies since different generations of drugs are available with different pharmacological profiles...
May 22, 2018: Pharmacogenomics
https://www.readbyqxmd.com/read/29785773/molecular-tension-probes-to-investigate-the-mechanopharmacology-of-single-cells-a-step-toward-personalized-mechanomedicine
#13
Kornelia Galior, Victor Pui-Yan Ma, Yang Liu, Hanquan Su, Nusaiba Baker, Reynold A Panettieri, Cherry Wongtrakool, Khalid Salaita
Given that dysregulation of mechanics contributes to diseases ranging from cancer metastasis to lung disease, it is important to develop methods for screening the efficacy of drugs that target cellular forces. Here, nanoparticle-based tension sensors are used to quantify the mechanical response of individual cells upon drug treatment. As a proof-of-concept, the activity of bronchodilators is tested on human airway smooth muscle cells derived from seven donors, four of which are asthmatic. It is revealed that airway smooth muscle cells isolated from asthmatic donors exhibit greater traction forces compared to the control donors...
May 22, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29785740/expression-levels-of-breast-cancer-related-gas5-and-lsinct5-lncrnas-in-cancer-free-breast-tissue-molecular-associations-with-age-at-menarche-and-obesity
#14
Yaser Mansoori, Mohammad Bagher Tabei, Alireza Askari, Pantea Izadi, Abdolreza Daraei, Milad Bastami, Mohammad Mehdi Naghizadeh, Ziba Nariman-Saleh-Fam, Behnam Mansoori, Javad Tavakkoly-Bazzaz
Long noncoding RNAs (lncRNAs) constitute a major class of the human transcriptome which play crucial roles in the key biological processes of both normal and malignant breast cells. Although the aberrant expression of lncRNAs has been well-documented in breast cancer (BC), little is currently known about the association between their expression levels in the breast tissue of healthy women and BC risk factors, especially the reproductive or demographic characteristics that are among the most well-known BC risk modifiers...
May 21, 2018: Breast Journal
https://www.readbyqxmd.com/read/29785457/a-novel-method-of-intracorporeal-end-to-end-gastrogastrostomy-in-laparoscopic-pylorus-preserving-gastrectomy-for-early-gastric-cancer-including-a-unique-anastomotic-technique-piercing-the-stomach-with-a-linear-stapler
#15
Manabu Ohashi, Naoki Hiki, Satoshi Ida, Koshi Kumagai, Souya Nunobe, Takeshi Sano
BACKGROUND: Delta-shaped anastomosis is usually applied for an intracorporeal gastrogastrostomy in totally laparoscopic pylorus-preserving gastrectomy (TLPPG). However, the remnant stomach is slightly twisted around the anastomosis because it connects in side-to-side fashion. To realize an intracorporeal end-to-end gastrogastrostomy using an endoscopic linear stapler, we invented a novel method including a unique anastomotic technique. MATERIALS AND METHODS: In this new approach, we first made small gastrotomies at the greater and lesser curvatures of the transected antrum and then pierced it using an endoscopic linear stapler...
May 21, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29785434/integration-of-phospholipid-hyaluronic-acid-methotrexate-nanocarrier-assembly-and-amphiphilic-drug-drug-conjugate-for-synergistic-targeted-delivery-and-combinational-tumor-therapy
#16
Yang Li, Huabing Zhang, Yilin Chen, Jinyuan Ma, Jinyan Lin, Yinying Zhang, Zhongxiong Fan, Guanghao Su, Liya Xie, Xuan Zhu, Zhenqing Hou
Combinational cancer therapy has been considered as a promising strategy to achieve synergetic therapeutic effects and suppression of multidrug resistance. Herein, we adopted a combination of methotrexate (MTX), an antimetabolite acting on cytoplasm, and 10-hydroxycamptothecin (HCPT), an alkaloid acting on nuclei, to treat cancer. Given the different solubilities, membrane permeabilities, and anticancer mechanisms of both drugs, we developed a dual-targeting delivery system based on 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-hyaluronic acid (a principal ligand of CD44 receptors)-MTX (a selective ligand of folate receptors) nanoparticles, which was exploited to carry HCPT-MTX conjugate for synergistically boosting dual-drug co-delivery...
May 22, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29785403/immunotherapy-for-hepatocellular-carcinoma-current-advances-and-future-expectations
#17
REVIEW
Yingjun Xie, Yien Xiang, Jiyao Sheng, Dan Zhang, Xiaoxiao Yao, Yongsheng Yang, Xuewen Zhang
Primary liver cancer is a common kind of digestive cancers with high malignancy, causing 745,500 deaths each year. Hepatocellular carcinoma is the major pathological type of primary liver cancer. Traditional treatment methods for patients with hepatocellular carcinoma have shown poor efficacy in killing residual cancer cells for a long time. In recent years, tumor immunotherapy has emerged as a promising method owing to its safety and efficacy with respect to delaying the progression of advanced tumors and protecting postoperative patients against tumor relapse and metastasis...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29785246/modulating-metabolism-to-improve-cancer-induced-muscle-wasting
#18
REVIEW
Fabio Penna, Riccardo Ballarò, Marc Beltrá, Serena De Lucia, Paola Costelli
Muscle wasting is one of the main features of cancer cachexia, a multifactorial syndrome frequently occurring in oncologic patients. The onset of cachexia is associated with reduced tolerance and response to antineoplastic treatments, eventually leading to clinical conditions that are not compatible with survival. Among the mechanisms underlying cachexia, protein and energy dysmetabolism play a major role. In this regard, several potential treatments have been proposed, mainly on the basis of promising results obtained in preclinical models...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29785244/more-than-just-an-immunosuppressant-the-emerging-role-of-fty720-as-a-novel-inducer-of-ros-and-apoptosis
#19
REVIEW
Teruaki Takasaki, Kanako Hagihara, Ryosuke Satoh, Reiko Sugiura
Fingolimod hydrochloride (FTY720) is a first-in-class of sphingosine-1-phosphate (S1P) receptor modulator approved to treat multiple sclerosis by its phosphorylated form (FTY720-P). Recently, a novel role of FTY720 as a potential anticancer drug has emerged. One of the anticancer mechanisms of FTY720 involves the induction of reactive oxygen species (ROS) and subsequent apoptosis, which is largely independent of its property as an S1P modulator. ROS have been considered as a double-edged sword in tumor initiation/progression...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29785193/gallnuts-a-potential-treasure-in-anticancer-drug-discovery
#20
REVIEW
Jiayu Gao, Xiao Yang, Weiping Yin, Ming Li
Introduction. In the discovery of more potent and selective anticancer drugs, the research continually expands and explores new bioactive metabolites coming from different natural sources. Gallnuts are a group of very special natural products formed through parasitic interaction between plants and insects. Though it has been traditionally used as a source of drugs for the treatment of cancerous diseases in traditional and folk medicinal systems through centuries, the anticancer properties of gallnuts are barely systematically reviewed...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
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