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International Journal of Molecular Sciences

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https://www.readbyqxmd.com/read/28448473/transcriptomic-analysis-of-calcium-remodeling-in-colorectal-cancer
#1
Enrique Pérez-Riesgo, Lucía G Gutiérrez, Daniel Ubierna, Alberto Acedo, Mary P Moyer, Lucía Núñez, Carlos Villalobos
Colorectal cancer (CRC) cells undergo the remodeling of intracellular Ca(2+) homeostasis, which contributes to cancer hallmarks such as enhanced proliferation, invasion and survival. Ca(2+) remodeling includes critical changes in store-operated Ca(2+) entry (SOCE) and Ca(2+) store content. Some changes have been investigated at the molecular level. However, since nearly 100 genes are involved in intracellular Ca(2+) transport, a comprehensive view of Ca(2+) remodeling in CRC is lacking. We have used Next Generation Sequencing (NGS) to investigate differences in expression of 77 selected gene transcripts involved in intracellular Ca(2+) transport in CRC...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448471/regulation-of-g-protein-coupled-receptors-by-ubiquitination
#2
REVIEW
Kamila Skieterska, Pieter Rondou, Kathleen Van Craenenbroeck
G protein-coupled receptors (GPCRs) comprise the largest family of membrane receptors that control many cellular processes and consequently often serve as drug targets. These receptors undergo a strict regulation by mechanisms such as internalization and desensitization, which are strongly influenced by posttranslational modifications. Ubiquitination is a posttranslational modification with a broad range of functions that is currently gaining increased appreciation as a regulator of GPCR activity. The role of ubiquitination in directing GPCRs for lysosomal degradation has already been well-established...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448467/chemical-composition-and-biological-activities-of-mono-and-heterofloral-bee-pollen-of-different-geographical-origins
#3
Jucilene Silva Araújo, Emerson Dechechi Chambó, Maria Angélica Pereira de Carvalho Costa, Samira Maria Peixoto Cavalcante da Silva, Carlos Alfredo Lopes de Carvalho, Leticia M Estevinho
Recent research shows variations in pollen chemical constituents and, consequently, in their therapeutic properties. Mono and multifloral bee pollen extracts were investigated for antioxidant and enzyme inhibitory activity properties, phenolic compounds and fatty acid composition. Generally, Eucalyptus spp. and multifloral extracts exhibited potent inhibitory activity against α-amylase, acetylcholinesterase, tyrosinase, lipoxygenase, lipase and hyaluronidase. On the other hand, Miconia spp. demonstrated higher antihemolytic activity...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448463/thymoquinone-defeats-diabetes-induced-testicular-damage-in-rats-targeting-antioxidant-inflammatory-and-aromatase-expression
#4
Mustafa S Atta, Essam A Almadaly, Ali H El-Far, Rasha M Saleh, Doaa H Assar, Soad K Al Jaouni, Shaker A Mousa
Antioxidants have valuable effects on the process of spermatogenesis, particularly with diabetes mellitus (DM). Therefore, the present study investigated the impact and the intracellular mechanisms by which thymoquinone (TQ) works against diabetes-induced testicular deteriorations in rats. Wistar male rats (n = 60) were randomly allocated into four groups; Control, Diabetic (streptozotocin (STZ)-treated rats where diabetes was induced by intraperitoneal injection of STZ, 65 mg/kg), Diabetic + TQ (diabetic rats treated with TQ (50 mg/kg) orally once daily), and TQ (non-diabetic rats treated with TQ) for 12 weeks...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448446/renalase-protects-against-renal-fibrosis-by-inhibiting-the-activation-of-the-erk-signaling-pathways
#5
Yiru Wu, Liyan Wang, Dai Deng, Qidong Zhang, Wenhu Liu
Renal interstitial fibrosis is a common pathway for the progression of chronic kidney disease (CKD) to end-stage renal disease. Renalase, acting as a signaling molecule, has been reported to have cardiovascular and renal protective effects. However, its role in renal fibrosis remains unknown. In this study, we evaluated the therapeutic efficacy of renalase in rats with complete unilateral ureteral obstruction (UUO) and examined the inhibitory effects of renalase on transforming growth factor-β1 (TGF-β1)-induced epithelial-mesenchymal transition (EMT) in human proximal renal tubular epithelial (HK-2) cells...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448444/role-of-the-vanins-myeloperoxidase-axis-in-colorectal-carcinogenesis
#6
REVIEW
Francesco Mariani, Luca Roncucci
The presence of chronic inflammation in the colonic mucosa leads to an increased risk of cancer. Among proteins involved in the regulation of mucosal inflammation and that may contribute both to structural damage of the intestinal mucosa and to intestinal carcinogenesis, there are myeloperoxidase (MPO) and vanins. The infiltration of colonic mucosa by neutrophils may promote carcinogenesis through MPO, a key enzyme contained in the lysosomes of neutrophils that regulates local inflammation and the generation of reactive oxygen species (ROS) and mutagenic species...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448439/ykl-40-induced-inhibition-of-mir-590-3p-promotes-interleukin-18-expression-and-angiogenesis-of-endothelial-progenitor-cells
#7
Te-Mao Li, Shan-Chi Liu, Ya-Hsin Huang, Chien-Chung Huang, Chin-Jung Hsu, Chun-Hao Tsai, Shih-Wei Wang, Chih-Hsin Tang
YKL-40, also known as human cartilage glycoprotein-39 or chitinase-3-like-1, is a pro-inflammatory protein that is highly expressed in rheumatoid arthritis (RA) patients. Angiogenesis is a critical step in the pathogenesis of RA, promoting the infiltration of inflammatory cells into joints and providing oxygen and nutrients to RA pannus. In this study, we examined the effects of YKL-40 in the production of the pro-inflammatory cytokine interleukin-18 (IL-18), and the stimulation of angiogenesis and accumulation of osteoblasts...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448438/antiplatelet-activity-of-a-newly-synthesized-novel-ruthenium-ii-a-potential-role-for-akt-jnk-signaling
#8
Themmila Khamrang, Kuo-Chen Hung, Chih-Hsuan Hsia, Cheng-Ying Hsieh, Marappan Velusamy, Thanasekaran Jayakumar, Joen-Rong Sheu
In oncotherapy, ruthenium complexes are considered as potential alternatives for platinum compounds, and have been proved as promising anticancer drugs with high efficacy and lesser side effects. Platelet activation plays a major role in cancer metastasis and progression. Hence, this study explored the effect of a newly synthesized ruthenium complex, [Ru(η⁶-cymene)(L)Cl]BF₄(TQ5), where L = 4-phenyl-2-pyridin-2-yl-quinazoline), on human platelet activation. TQ5 (3-5 µM) inhibited concentration-dependent collagen-induced platelet aggregation in washed human platelets...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28448437/sulfiredoxin-may-promote-cervical-cancer-metastasis-via-wnt-%C3%AE-catenin-signaling-pathway
#9
Kangyun Lan, Yuni Zhao, Yue Fan, Binbin Ma, Shanshan Yang, Qin Liu, Hua Linghu, Hui Wang
The abnormal elevation of sulfiredoxin (Srx/SRXN1)-an antioxidant enzyme whose main function is to protect against oxidative stress-has been shown to be closely correlated with the progression of several types of cancer, including human cervical cancer. However, the molecular mechanism by which Srx promotes tumor progression, especially cancer metastasis in cervical cancer, has not been elucidated. Here, we show that Srx expression gradually increases during the progression of human cervical cancer and its expression level is closely correlated with lymph node metastasis...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28445443/nutrimiraging-micromanaging-nutrient-sensing-pathways-through-nutrition-to-promote-healthy-aging
#10
REVIEW
Víctor Micó, Laura Berninches, Javier Tapia, Lidia Daimiel
Current sociodemographic predictions point to a demographic shift in developed and developing countries that will result in an unprecedented increase of the elderly population. This will be accompanied by an increase in age-related conditions that will strongly impair human health and quality of life. For this reason, aging is a major concern worldwide. Healthy aging depends on a combination of individual genetic factors and external environmental factors. Diet has been proved to be a powerful tool to modulate aging and caloric restriction has emerged as a valuable intervention in this regard...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28445429/exploring-the-behavioral-and-metabolic-phenotype-generated-by-re-introduction-of-the-ghrelin-receptor-in-the-ventral-tegmental-area
#11
Louise J Skov, Morten Jensen, Søren H Christiansen, Cecilia Ratner, David P D Woldbye, Birgitte Holst
Ghrelin receptor (Ghr-R) signaling in neurons of the ventral tegmental area (VTA) can modulate dopaminergic function and the reward-related effects of both palatable foods and drugs of abuse. In this study, we re-introduced the Ghr-R in VTA neurons in Ghr-R knockout mice (Ghr-R(VTA) mice) to specifically study the importance of the constitutively active Ghr-R for VTA neuronal signaling. Our results showed that re-introduction of the Ghr-R in the VTA had no impact on body weight or food intake under basal conditions...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28445428/residue-modification-and-mass-spectrometry-for-the-investigation-of-structural-and-metalation-properties-of-metallothionein-and-cysteine-rich-proteins
#12
REVIEW
Gordon W Irvine, Martin J Stillman
Structural information regarding metallothioneins (MTs) has been hard to come by due to its highly dynamic nature in the absence of metal-thiolate cluster formation and crystallization difficulties. Thus, typical spectroscopic methods for structural determination are limited in their usefulness when applied to MTs. Mass spectrometric methods have revolutionized our understanding of protein dynamics, structure, and folding. Recently, advances have been made in residue modification mass spectrometry in order to probe the hard-to-characterize structure of apo- and partially metalated MTs...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28445427/small-rna-pathways-that-protect-the-somatic-genome
#13
REVIEW
Seogang Hyun
Transposable elements (TEs) are DNA elements that can change their position within the genome, with the potential to create mutations and destabilize the genome. As such, special molecular systems have been adopted in animals to control TE activity in order to protect the genome. PIWI proteins, in collaboration with PIWI-interacting RNAs (piRNAs), are well known to play a critical role in silencing germline TEs. Although initially thought to be germline-specific, the role of PIWI-piRNA pathways in controlling TEs in somatic cells has recently begun to be explored in various organisms, together with the role of endogenous small interfering RNAs (endo-siRNAs)...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28445400/targeting-the-epidermal-growth-factor-receptor-in-addition-to-chemotherapy-in-patients-with-advanced-pancreatic-cancer-a-systematic-review-and-meta-analysis
#14
REVIEW
Jaseela Chiramel, Alison C Backen, Rille Pihlak, Angela Lamarca, Melissa Frizziero, Noor-Ul-Ain Tariq, Richard A Hubner, Juan W Valle, Eitan Amir, Mairéad G McNamara
Overexpression of epidermal growth factor receptors (EGFR) occurs in >90% of pancreatic ductal adenocarcinomas (PDACs) and is associated with a poorer prognosis. A systematic review of electronic databases identified studies exploring the addition of EGFR-targeted treatment to chemotherapy in patients with locally advanced (LA)/metastatic PDAC. Efficacy, safety and tolerability of EGFR-targeted therapy were explored using meta-analysis of randomised controlled trials (RCTs). Meta-regression was utilised to explore factors associated with improved prognosis (all studies) and benefit from EGFR-targeted therapy (RCTs)...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28445397/radiation-and-thyroid-cancer
#15
REVIEW
Elisabetta Albi, Samuela Cataldi, Andrea Lazzarini, Michela Codini, Tommaso Beccari, Francesco Saverio Ambesi-Impiombato, Francesco Curcio
Radiation-induced damage is a complex network of interlinked signaling pathways, which may result in apoptosis, cell cycle arrest, DNA repair, and cancer. The development of thyroid cancer in response to radiation, from nuclear catastrophes to chemotherapy, has long been an object of study. A basic overview of the ionizing and non-ionizing radiation effects of the sensitivity of the thyroid gland on radiation and cancer development has been provided. In this review, we focus our attention on experiments in cell cultures exposed to ionizing radiation, ultraviolet light, and proton beams...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28445396/mir-103-promotes-proliferation-and-metastasis-by-targeting-klf4-in-gastric-cancer
#16
Jie Zheng, Yuzhen Liu, Yanchun Qiao, Liying Zhang, Shijun Lu
MicroRNAs (miRNAs) play important roles in the cancer development and progression; overexpression of miR-103 has been identified in various tumors. However, its biological function and regulatory mechanism involved in modulation of human gastric cancer (GC) remain largely unknown. This study aimed to confirm clinical significance of miR-103 and investigate its biological role and underlying mechanism in GC. Real-time quantitative PCR (qRT-PCR) revealed miR-103 was highly expressed in GC tissues and cell lines...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28445390/prevention-of-colorectal-cancer-by-targeting-obesity-related-disorders-and-inflammation
#17
REVIEW
Yohei Shirakami, Masaya Ohnishi, Hiroyasu Sakai, Takuji Tanaka, Masahito Shimizu
Colorectal cancer is a major healthcare concern worldwide. Many experimental and clinical studies have been conducted to date to discover agents that help in the prevention of this disease. Chronic inflammation in colonic mucosa and obesity, and its related metabolic abnormalities, are considered to increase the risk of colorectal cancer. Therefore, treatments targeting these factors might be a promising strategy to prevent the development of colorectal cancer. Among a number of functional foods, various phytochemicals, including tea catechins, which have anti-inflammatory and anti-obesity properties, and medicinal agents that ameliorate metabolic disorders, might also be beneficial in the prevention of colorectal cancer...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441362/real-world-experiences-with-the-combination-treatment-of-ledipasvir-plus-sofosbuvir-for-12-weeks-in-hcv-genotype-1-infected-japanese-patients-achievement-of-a-sustained-virological-response-in-previous-users-of-peginterferon-plus-ribavirin-with-hcv-ns3-4a-inhibitors
#18
Tatsuo Kanda, Shin Yasui, Masato Nakamura, Eiichiro Suzuki, Makoto Arai, Yoshihiko Ooka, Sadahisa Ogasawara, Tetsuhiro Chiba, Tomoko Saito, Yuki Haga, Koji Takahashi, Reina Sasaki, Shuang Wu, Shingo Nakamoto, Akinobu Tawada, Hitoshi Maruyama, Fumio Imazeki, Naoya Kato, Osamu Yokosuka
The aim of this study was to characterize the treatment response and serious adverse events of ledipasvir plus sofosbuvir therapies in Japanese patients infected with hepatitis C virus (HCV) genotype 1 (GT1). This retrospective study analyzed 240 Japanese HCV GT1 patients treated for 12 weeks with 90 mg of ledipasvir plus 400 mg of sofosbuvir daily. Sustained virological response at 12 weeks post-treatment (SVR12) was achieved in 236 of 240 (98.3%) patients. Among treatment-naïve patients, SVR12 was achieved in 136 of 138 (98...
April 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441355/-188-re-liposome-can-induce-mitochondrial-autophagy-and-reverse-drug-resistance-for-ovarian-cancer-from-bench-evidence-to-preliminary-clinical-proof-of-concept
#19
Chia-Ming Chang, Keng-Li Lan, Wen-Sheng Huang, Yi-Jang Lee, Te-Wei Lee, Chih-Hsien Chang, Chi-Mu Chuang
Despite standard treatment, about 70% of ovarian cancer will recur. Cancer stem cells (CSCs) have been implicated in the drug-resistance mechanism. Several drug resistance mechanisms have been proposed, and among these, autophagy plays a crucial role for the maintenance and tumorigenicity of CSCs. Compared to their differentiated counterparts, CSCs have been demonstrated to display a significantly higher level of autophagy flux. Moreover, mitophagy, a specific type of autophagy that selectively degrades excessive or damaged mitochondria, is shown to contribute to cancer progression and recurrence in several types of tumors...
April 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28441353/matrix-metalloproteinase-gene-activation-resulting-from-disordred-epigenetic-mechanisms-in-rheumatoid-arthritis
#20
REVIEW
Yasuto Araki, Toshihide Mimura
Matrix metalloproteinases (MMPs) are implicated in the degradation of extracellular matrix (ECM). Rheumatoid arthritis (RA) synovial fibroblasts (SFs) produce matrix-degrading enzymes, including MMPs, which facilitate cartilage destruction in the affected joints in RA. Epigenetic mechanisms contribute to change in the chromatin state, resulting in an alteration of gene transcription. Recently, MMP gene activation has been shown to be caused in RASFs by the dysregulation of epigenetic changes, such as histone modifications, DNA methylation, and microRNA (miRNA) signaling...
April 25, 2017: International Journal of Molecular Sciences
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