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https://www.readbyqxmd.com/read/28719877/functional-genomic-assessment-of-2-2-bis-bromomethyl-1-3-propanediol-induced-cytotoxicity-in-a-single-gene-knockout-library-of-e-%C3%A2-coli
#1
Miao Guan, Xiaowei Zhang
Functional gene fingerprinting of chemicals could be used to understand the direct gene-chemical interaction in the process of toxification from a genome-wide scale. 2, 2-bis (bromomethyl)-1, 3-propanediol (BMP) is a brominated flame retardant with widespread production but with very limited toxicological data. Here the cytotoxicity of BMP was assessed by Escherichia coli (E. coli) functional genome-wide knockout mutants screening and the underlying molecular mechanism was investigated. The median inhibition concentration (IC50) of BMP was 1...
July 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28719821/bcg-old-workhorse-new-skills
#2
REVIEW
M Gengenbacher, N E Nieuwenhuizen, She Kaufmann
Bacille Calmette-Guérin (BCG), the only tuberculosis (TB) vaccine in clinical practice, has limitations in efficacy, immunogenicity and safety. Much current TB vaccine research focuses on engineering live mycobacteria to interfere with phagosome biology and host intracellular pathways including apoptosis and autophagy, with candidates such as BCG Δzmp1, BCG ΔureC::hly, BCG::ESX-1(Mmar), Mtb ΔphoP ΔfadD26, Mtb ΔRD1 ΔpanCD and M. smegmatis Δesx-3::esx-3(Mtb) in the development pipeline. Correlates of protection in preclinical studies include increased central memory CD4(+) T cells and recruitment of antigen-specific T cells to the lungs, with mucosal vaccination found to be superior to parenteral vaccination...
July 15, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28719799/mesencephalic-astrocyte-derived-neurotrophic-factor-manf-a-new-player-in-endoplasmic-reticulum-diseases-structure-biology-and-therapeutic-roles
#3
REVIEW
Yeawon Kim, Sun-Ji Park, Ying Maggie Chen
Mesencephalic astrocyte-derived neurotrophic factor (MANF), a newly identified 18-kDa soluble protein, localizes to the luminal endoplasmic reticulum (ER), whose stress can stimulate MANF expression and secretion. In Drosophila and zebrafish, MANF regulates dopaminergic neuron development. In contrast, in mice, MANF deficiency leads to diabetes and activation of the unfolded protein response. Recent studies in rodent models have demonstrated that MANF mitigates diabetes, exerts neurotrophic function in neurodegenerative disease, protects cardiomyocytes and neurons in myocardial infarction and cerebral ischemia, respectively, and promotes immune cell phenotype switch from proinflammatory macrophages to prorepair anti-inflammatory macrophages...
June 29, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28719468/etv6-gene-rearrangements-characterize-a-morphologically-distinct-subset-of-sinonasal-low-grade-non-intestinal-type-adenocarcinoma-a-novel-translocation-associated-carcinoma-restricted-to-the-sinonasal-tract
#4
Simon Andreasen, Alena Skálová, Abbas Agaimy, Justin A Bishop, Jan Laco, Ilmo Leivo, Alessandro Franchi, Stine R Larsen, Daiva Erentaite, Benedicte P Ulhøi, Christian von Buchwald, Linea C Melchior, Michal Michal, Katalin Kiss
Low-grade sinonasal adenocarcinomas (low-grade SNACs) of the sinonasal tract comprise a poorly characterized and histologically heterogeneous group of tumors. We describe three cases of a histologically distinct variant of low-grade SNAC characterized by ETV6 gene rearrangements. The patients included 2 women (aged 32 and 88 y) and a man (aged 75 y); all were initially treated with surgery alone. Follow-up ranged from 9 to 170 months with one patient having 2 local recurrences and none experiencing distant or regional metastases...
July 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28719341/label-free-quantitative-proteomics-analysis-on-the-cisplatin-resistance-in-ovarian-cancer-cells
#5
F Wang, Y Zhu, S Fang, S Li, S Liu
Quantitative proteomics has been made great progress in recent years. Label free quantitative proteomics analysis based on the mass spectrometry is widely used. Using this technique, we determined the differentially expressed proteins in the cisplatin-sensitive ovarian cancer cells COC1 and cisplatin-resistant cells COC1/DDP before and after the application of cisplatin. Using the GO analysis, we classified those proteins into different subgroups bases on their cellular component, biological process, and molecular function...
May 20, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28719319/phosphoproteome-of-toxoplasma-gondii-infected-host-cells-reveals-specific-cellular-processes-predominating-in-different-phases-of-infection
#6
Cheng He, Ai-Yuan Chen, Hai-Xia Wei, Xiao-Shuang Feng, Hong-Juan Peng
The invasion of Toxoplasma gondii tachyzoites into the host cell results in extensive host cell signaling activation/deactivation that is usually regulated by the phosphorylation/dephosphorylation. To elucidate how T. gondii regulates host cell signal transduction, the comparative phosphoproteome of stable isotope labeling with amino acids in cell culture-labeled human foreskin fibroblast cells was analyzed. The cells were grouped (Light [L], Medium [M], and Heavy [H] groups) based on the labeling isotope weight and were infected with T...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719245/production-of-a-mouse-monoclonal-antibody-against-mortalin-by-whole-cell-immunization
#7
Marzieh Rezaei, Abbas Ghaderi
Pancreatic carcinoma is the fourth leading cause of cancer death and is characterized by early invasion and metastasis. Advances in molecular biology directed new strategies in targeted therapy using monoclonal antibodies. To identify new biomarkers, we generated a panel of monoclonal antibodies against the newly established cell line, Faraz-ICR, from a patient with acinar cell carcinoma. After immunization of BALB/c female mice with Faraz-ICR cell line and fusion of splenocytes with SP2/0 myeloma cell line, high reactive hybridoma producing antibodies to Faraz-ICR were detected using enzyme-linked immunosorbent assay, immunofluorescence staining and flow cytometry...
July 18, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28719231/biologic-injections-for-osteoarthritis-and-articular-cartilage-damage-can-we-modify-disease
#8
Weilong J Shi, Fotios P Tjoumakaris, Mayan Lendner, Kevin B Freedman
OBJECTIVE: The purpose of the present investigation is to conduct a systematic review of the literature to review the clinical results of platelet rich plasma (PRP) and mesenchymal stem cell treatments (MSC) (biologics) for articular cartilage lesions and osteoarthritis of the knee. METHODS: A search of the PubMed, EMBASE, and Cochrane databases was performed to identify studies involving biologic therapy for osteoarthritis or osteochondral defects. Only Level I-III clinical trials with at least 3-month follow-up were included...
July 18, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28719148/high-expression-of-fundc1-predicts-poor-prognostic-outcomes-and-is-a-promising-target-to-improve-chemoradiotherapy-effects-in-patients-with-cervical-cancer
#9
Hailing Hou, Puchun Er, Jingjing Cheng, Xiuli Chen, Xiaofeng Ding, Yuwen Wang, Xi Chen, Zhiyong Yuan, Qingsong Pang, Ping Wang, Dong Qian
FUN14 domain containing 1 (FUNDC1) is an important molecule in receptor-dependent mitophagy. However, the roles of FUNDC1 in human cancer biology remain unknown. The aim of this study was to explore the expression and roles of FUNDC1 in cervical cancer. Immunohistochemistry and Western blotting were applied to detect the expression of FUNDC1, and small-hairpin RNA was applied to inhibit the expression of endogenous FUNDC1 in cervical cancer cells. MTT assays and Flow cytometric analysis were applied to examine cell proliferation and apoptosis...
July 18, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28719146/natural-compounds-in-cancer-prevention-effects-of-coffee-extracts-and-their-main-polyphenolic-component-5-cqa-on-oncogenic-ras-proteins
#10
Alessandro Palmioli, Carlotta Cairamelli, Renata Tisi, Michela Spinelli, Gaia De Sanctis, Elena Sacco, Cristina Airoldi
Recent epidemiological studies demonstrate that consumption of healthy foods, especially rich in polyphenols content, might reduce the incidence of cancer and degenerative diseases. In particular, chlorogenic acids (CGAs) occur ubiquitously in food, representing the most abundant polyphenols in the human diet. A number of CGA beneficial biological effects, including anti-inflammatory activity, anti-carcinogenic activity and protection against neurodegenerative diseases have been reported. However, the molecular mechanisms at the basis of these biological activities have not yet been investigated in depth...
July 18, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28719054/evolutionary-cell-biology-of-proteins-from-protists-to-humans-and-plants
#11
REVIEW
Helmut Plattner
During evolution, the cell as a fine-tuned machine had to undergo permanent adjustments to match changes in its environment, while "closed for repair work" was not possible. Evolution from protists (protozoa and unicellular algae) to multicellular organisms may have occurred in basically two lineages, Unikonta and Bikonta, culminating in mammals and angiosperms (flowering plants), respectively. Unicellular models for unikont evolution are myxamoebae (Dictyostelium) and increasingly also choanoflagellates, whereas, for bikonts, ciliates are preferred models...
July 18, 2017: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/28719044/symmetry-breaking-in-development-and-stochastic-gene-expression
#12
REVIEW
Jonathan R Chubb
The prevailing emphasis in developmental biology since the expansion of the molecular biology age has been that developmental decisions are instructive. A cell differentiates to become a specific cell type because it receives a signal, whereas its neighbor that does not receive the signal adopts a different fate. This emphasis has been generally accepted, largely because of the success of this view in tractable invertebrate model organisms, and the widespread similarities in molecular regulation to the development of more complex species...
July 18, 2017: Wiley Interdisciplinary Reviews. Developmental Biology
https://www.readbyqxmd.com/read/28719024/the-immunoproteasome-an-old-player-with-a-novel-and-emerging-role-in-alloimmunity
#13
S K Eskandari, M A J Seelen, G Lin, J R Azzi
Modern treatment strategies for the maintenance of allograft acceptance frequently target ubiquitously-expressed pathways, leading to significant side-effects and poor long-term allograft outcomes. Constitutive proteasome inhibitors, which have recently been introduced for the treatment of antibody-mediated rejection, target the ubiquitously-expressed proteasome. To limit off-target effects and serious mechanism-based toxicity, however, these inhibitors are administered intermittently and suboptimally. Immunoproteasomes, which are an inducible subset of proteasomes enriched in immune cells, replace constitutive proteasomes after cell exposure to proinflammatory cytokines such as interferon-γ...
July 18, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28718934/nad-a-key-metabolic-regulator-with-great-therapeutic-potential
#14
REVIEW
Ghazal Sultani, Azrah F Samsudeen, Brenna Osborne, Nigel Turner
Nicotinamide adenine dinucleotide (NAD(+) ) is a ubiquitous metabolite that serves an essential role in the catabolism of nutrients. Recently there has been a surge of interest in NAD(+) biology, with the recognition that NAD(+) influences many biological processes beyond metabolism, including transcription, signalling and cell survival. There are a multitude of pathways involved in the synthesis and breakdown of NAD(+) , and alterations in NAD(+) homeostasis have emerged as a common feature of a range of disease states...
July 18, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28718902/pluripotent-stem-cell-based-platforms-in-cardiac-disease-modeling-and-drug-testing
#15
N Shaheen, A Shiti, L Gepstein
The ability to generate patient/disease-specific human pluripotent stem cell (hPSC)-derived cardiomyocytes (hPSC-CMs) brings a unique value to the fields of cardiac disease modeling, drug testing, drug discovery, and precision medicine. Further integration of emerging innovative technologies such as developmental-biology inspired differentiation into chamber-specific cardiomyocyte subtypes, genome-editing, tissue-engineering, and novel functional phenotyping methodologies should facilitate even more advanced investigations...
August 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28718849/an-efficient-method-to-transcription-factor-binding-sites-imputation-via-simultaneous-completion-of-multiple-matrices-with-positional-consistency
#16
Wei-Li Guo, De-Shuang Huang
Transcription factors (TFs) are DNA-binding proteins that have a central role in regulating gene expression. Identification of DNA-binding sites of TFs is a key task in understanding transcriptional regulation, cellular processes and disease. Chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) enables genome-wide identification of in vivo TF binding sites. However, it is still difficult to map every TF in every cell line owing to cost and biological material availability, which poses an enormous obstacle for integrated analysis of gene regulation...
July 18, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28718844/solvent-gradient-electrospray-for-laser-ablation-electrospray-ionization-mass-spectrometry
#17
Hang Li, Akos Vertes
Most electrospray based ambient ionization techniques, e.g., laser ablation electrospray ionization (LAESI), utilize a fixed spray solution composition. Complex samples often contain compounds of different polarity that exhibit a wide range of solubilities in the electrospray solvent. Thus, the fixed spray solution composition limits the molecular coverage of these approaches. Two-barrel theta glass capillaries have been used for the rapid mixing of two solutions for manipulating fast reactions including protein folding, unfolding, and charge state distributions...
July 18, 2017: Analyst
https://www.readbyqxmd.com/read/28718842/secreted-protein-acidic-and-rich-in-cysteine-sparc-enhances-cell-proliferation-migration-and-epithelial-mesenchymal-transition-and-sparc-expression-is-associated-with-tumor-grade-in-head-and-neck-cancer
#18
Chih-Hau Chang, Meng-Chi Yen, Ssu-Hui Liao, Yu-Ling Hsu, Chung-Sheng Lai, Kao-Ping Chang, Ya-Ling Hsu
Secreted protein acidic and rich in cysteine (SPARC) is a secreted protein which is involved in various biological processes. SPARC expression is associated with tumor metastasis and poor prognosis in several types of cancer. However, the SPARC-induced signaling pathway was not fully understood in head and neck cancer. In this study, our results showed that SPARC treatment promoted cell proliferation and migration in head and neck cancer cell lines FaDu and Detroit 562. In addition, SPARC induced expression of epithelial mesenchymal transition (EMT) regulators, including Slug, Snail, and Twist in Detroit 562...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28718836/the-biological-activities-of-sesterterpenoid-type-ophiobolins
#19
REVIEW
Wei Tian, Zixin Deng, Kui Hong
Ophiobolins (Ophs) are a group of tricarbocyclic sesterterpenoids whose structures contain a tricyclic 5-8-5 carbotricyclic skeleton. Thus far, 49 natural Ophs have been reported and assigned into A-W subgroups in order of discovery. While these sesterterpenoids were first characterized as highly effective phytotoxins, later investigations demonstrated that they display a broad spectrum of biological and pharmacological characteristics such as phytotoxic, antimicrobial, nematocidal, cytotoxic, anti-influenza and inflammation-promoting activities...
July 18, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28718819/akanthopyrones-a-d-%C3%AE-pyrones-bearing-a-4-o-methyl-%C3%AE-d-glucopyranose-moiety-from-the-spider-associated-ascomycete-akanthomyces-novoguineensis
#20
Wilawan Kuephadungphan, Soleiman E Helaly, Charuwan Daengrot, Souwalak Phongpaichit, Janet Jennifer Luangsa-Ard, Vatcharin Rukachaisirikul, Marc Stadler
Hypocrealean fungi have proved to be prolific bioactive metabolite producers; they have caught the attention of mycologists throughout the world. However, only a few studies on the insect and spider parasitic genus Akanthomyces have so far been carried out. In this study, we report the isolation, structural elucidation and biological activities of four unprecedented glycosylated α-pyrone derivatives, akanthopyrones A-D (1-4), from a culture of Akanthomyces novoguineensis collected in Thailand. The chemical structures of the akanthopyrones were determined by extensive 1D- and 2D-NMR, and HRMS spectroscopic analysis...
July 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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