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Journal of Biomedical Science

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https://www.readbyqxmd.com/read/27912760/update-on-recent-preclinical-and-clinical-studies-of-t790m-mutant-specific-irreversible-epidermal-growth-factor-receptor-tyrosine-kinase-inhibitors
#1
REVIEW
Bin-Chi Liao, Chia-Chi Lin, Jih-Hsiang Lee, James Chih-Hsin Yang
The first- and second-generation epidermal growth factor receptor tyrosine kinase inhibitors (1/2G EGFR-TKIs) gefitinib, erlotinib, and afatinib have all been approved as standard first-line treatments for advanced EGFR mutation-positive non-small cell lung cancer. The third-generation (3G) EGFR-TKIs have been developed to overcome the EGFR T790M mutation, which is the most common mechanism of acquired resistance to 1/2G EGFR-TKI treatment. This resistance mutation develops in half of the patients who respond to 1/2G EGFR-TKI therapy...
December 3, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27912756/mechanisms-of-inflammatory-responses-and-development-of-insulin-resistance-how-are-they-interlinked
#2
Kanwal Rehman, Muhammad Sajid Hamid Akash
BACKGROUND: Insulin resistance (IR) is one of the major hallmark for pathogenesis and etiology of type 2 diabetes mellitus (T2DM). IR is directly interlinked with various inflammatory responses which play crucial role in the development of IR. Inflammatory responses play a crucial role in the pathogenesis and development of IR which is one of the main causative factor for the etiology of T2DM. METHODS: A comprehensive online English literature was searched using various electronic search databases...
December 3, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27903271/differential-humoral-and-cellular-immunity-induced-by-vaccination-using-plasmid-dna-and-protein-recombinant-expressing-the-ns3-protein-of-dengue-virus-type-3
#3
M L Hurtado-Melgoza, A Ramos-Ligonio, L M Álvarez-Rodríguez, T Meza-Menchaca, A López-Monteon
BACKGROUND: The dengue non-structural 3 (NS3) is a multifunctional protein, containing a serine-protease domain, located at the N-terminal portion, and helicase, NTPase and RTPase domains present in the C-terminal region. This protein is considered the main target for CD4+ and CD8+ T cell responses during dengue infection, which may be involved in protection. However, few studies have been undertaken evaluating the use of this protein as a protective antigen against dengue, as well as other flavivirus...
December 1, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27881168/loss-of-porin-function-in-dopaminergic-neurons-of-drosophila-is-suppressed-by-buffy
#4
P Githure M'Angale, Brian E Staveley
BACKGROUND: Mitochondrial porin, also known as the voltage-dependent anion channel (VDAC), is a multi-functional channel protein that shuttles metabolites between the mitochondria and the cytosol and implicated in cellular life and death decisions. The inhibition of porin under the control of neuronal Ddc-Gal4 result in short lifespan and in an age-dependent loss in locomotor function, phenotypes that are strongly associated with Drosophila models of Parkinson disease. METHODS: Loss of porin function was achieved through exploitation of RNA interference while derivative lines were generated by homologous recombination and tested by PCR...
November 24, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27881166/using-the-social-amoeba-dictyostelium-to-study-the-functions-of-proteins-linked-to-neuronal-ceroid-lipofuscinosis
#5
REVIEW
Robert J Huber
Neuronal ceroid lipofuscinosis (NCL), also known as Batten disease, is a debilitating neurological disorder that affects both children and adults. Thirteen genetically distinct genes have been identified that when mutated, result in abnormal lysosomal function and an excessive accumulation of ceroid lipofuscin in neurons, as well as other cell types outside of the central nervous system. The NCL family of proteins is comprised of lysosomal enzymes (PPT1/CLN1, TPP1/CLN2, CTSD/CLN10, CTSF/CLN13), proteins that peripherally associate with membranes (DNAJC5/CLN4, KCTD7/CLN14), a soluble lysosomal protein (CLN5), a protein present in the secretory pathway (PGRN/CLN11), and several proteins that display different subcellular localizations (CLN3, CLN6, MFSD8/CLN7, CLN8, ATP13A2/CLN12)...
November 24, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27863492/defective-autophagy-leads-to-the-suppression-of-stem-like-features-of-cd271-osteosarcoma-cells
#6
Dong Zhang, Qing Zhao, Hao Sun, Lijuan Yin, Jiajun Wu, Jun Xu, Tianxiang He, Chunlei Yang, Chengwei Liang
BACKGROUND: As an important stress-response mechanism, autophagy plays crucial role in the tumor formation and drug resistance of cancer cells including osteosarcoma (OS). OS cancer stem cells (CSCs) also are considered a key factor of tumorigenesis, drug resistance and tumor recurrence. However, the relationship between autophagy and OS CSCs still remains unclear. METHODS: CD271+ OS CSCs and CD271- OS cells were isolated by magnetic activated cell sorting. The autophagy level was evaluated by the mRNA expression of autophagy genes, the protein level of LC3II and p62, and the mean number of GFP-LC3 dot per cell...
November 18, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27863490/suberoylanilide-hydroxamic-acid-represses-glioma-stem-like-cells
#7
Che-Chia Hsu, Wen-Chang Chang, Tsung-I Hsu, Jr-Jiun Liu, Shiu-Hwa Yeh, Jia-Yi Wang, Jing-Ping Liou, Chiung-Yuan Ko, Kwang-Yu Chang, Jian-Ying Chuang
BACKGROUND: Glioma stem-like cells (GSCs) are proposed to be responsible for high resistance in glioblastoma multiforme (GBM) treatment. In order to find new strategies aimed at reducing GSC stemness and improving GBM patient survival, we investigated the effects and mechanism of a histone deacetylases (HDACs) inhibitor, suberoylanilide hydroxamic acid (SAHA), since HDAC activity has been linked to cancer stem-like cell (CSC) abundance and properties. METHODS: Human GBM cell lines were plated in serum-free suspension cultures allowed for sphere forming and CSC enrichment...
November 18, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27835996/developing-precision-medicine-for-people-of-east-asian-descent
#8
REVIEW
Stacy L McAllister, Katherine Sun, Eric R Gross
The goal of precision medicine is to separate patient populations into groups to ultimately provide customized care tailored to patients. In terms of precision medicine, ~540 million people in the world have a genetic variant of the aldehyde dehydrogenase 2 (ALDH2) enzyme causing a flushing response and tachycardia after alcohol consumption. The genetic variant is identified as ALDH2*2 and originates from East Asian descendants of the Han Chinese. The variant is particularly important to consider when discussing lifestyle choices with patients in terms of risk for developing specific diseases, preventative screening, and selection of medications for treatment...
November 11, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27832779/mir-199a-3p-inhibits-cell-proliferation-and-induces-apoptosis-by-targeting-yap1-suppressing-jagged1-notch-signaling-in-human-hepatocellular-carcinoma
#9
Kewei Ren, Tengfei Li, Wenzhe Zhang, Jianzhuang Ren, Zhen Li, Gang Wu
BACKGROUND: miR-199a-3p was significantly downregulated in the majority of human hepatocellular carcinoma (HCC) tissues and HCC cell lines. Yes associated protein 1 (YAP1) was overexpressed in human HCC, which promoted HCC development and progression by upregulating Jagged1 and activating the Notch pathway. We searched potential targets of miR-199a-3p with DIANA, TargetScan and PicTar tools, and found that YAP1 is one of the potential targets. Based on these findings, we speculated that miR-199a-3p might suppress HCC growth by targeting YAP1, downregulating Jagged1 and suppressing the Notch pathway...
November 10, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27832772/calcitriol-stimulates-gene-expression-of-cathelicidin-antimicrobial-peptide-in-breast-cancer-cells-with-different-phenotype
#10
Janice García-Quiroz, Rocío García-Becerra, Nancy Santos-Martínez, Euclides Avila, Fernando Larrea, Lorenza Díaz
BACKGROUND: In normal and neoplastic cells, growth-promoting, proangiogenic, cytotoxic and pro-apoptotic effects have all been attributed to cathelicidin antimicrobial peptide (CAMP). Nevertheless, little is known about the factors regulating this peptide expression in breast cancer. Herein we asked if the well-known antineoplastic hormone calcitriol could differentially modulate CAMP gene expression in human breast cancer cells depending on the cell phenotype in terms of efficacy and potency...
November 10, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27814702/biomimetic-approaches-with-smart-interfaces-for-bone-regeneration
#11
REVIEW
G S Sailaja, P Ramesh, Sajith Vellappally, Sukumaran Anil, H K Varma
A 'smart tissue interface' is a host tissue-biomaterial interface capable of triggering favourable biochemical events inspired by stimuli responsive mechanisms. In other words, biomaterial surface is instrumental in dictating the interface functionality. This review aims to investigate the fundamental and favourable requirements of a 'smart tissue interface' that can positively influence the degree of healing and promote bone tissue regeneration. A biomaterial surface when interacts synergistically with the dynamic extracellular matrix, the healing process become accelerated through development of a smart interface...
November 5, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27809910/human-mesenchymal-stem-cells-mscs-for-treatment-towards-immune-and-inflammation-mediated-diseases-review-of-current-clinical-trials
#12
REVIEW
Li-Tzu Wang, Chiao-Hsuan Ting, Men-Luh Yen, Ko-Jiunn Liu, Huey-Kang Sytwu, Kenneth K Wu, B Linju Yen
Human mesenchymal stem cells (MSCs) are multilineage somatic progenitor/stem cells that have been shown to possess immunomodulatory properties in recent years. Initially met with much skepticism, MSC immunomodulation has now been well reproduced across tissue sources and species to be clinically relevant. This has opened up the use of these versatile cells for application as 3rd party/allogeneic use in cell replacement/tissue regeneration, as well as for immune- and inflammation-mediated disease entities. Most surprisingly, use of MSCs for in immune-/inflammation-mediated diseases appears to yield more efficacy than for regenerative medicine, since engraftment of the exogenous cell does not appear necessary...
November 4, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27809842/perspectives-for-therapeutic-hpv-vaccine-development
#13
REVIEW
Andrew Yang, Emily Farmer, T C Wu, Chien-Fu Hung
BACKGROUND: Human papillomavirus (HPV) infections and associated diseases remain a serious burden worldwide. It is now clear that HPV serves as the etiological factor and biologic carcinogen for HPV-associated lesions and cancers. Although preventative HPV vaccines are available, these vaccines do not induce strong therapeutic effects against established HPV infections and lesions. These concerns create a critical need for the development of therapeutic strategies, such as vaccines, to treat these existing infections and diseases...
November 4, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27784307/mammalian-microrna-an-important-modulator-of-host-pathogen-interactions-in-human-viral-infections
#14
REVIEW
Chet Raj Ojha, Myosotys Rodriguez, Seth M Dever, Rita Mukhopadhyay, Nazira El-Hage
MicroRNAs (miRNAs), which are small non-coding RNAs expressed by almost all metazoans, have key roles in the regulation of cell differentiation, organism development and gene expression. Thousands of miRNAs regulating approximately 60 % of the total human genome have been identified. They regulate genetic expression either by direct cleavage or by translational repression of the target mRNAs recognized through partial complementary base pairing. The active and functional unit of miRNA is its complex with Argonaute proteins known as the microRNA-induced silencing complex (miRISC)...
October 26, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27770805/a-disease-spectrum-for-itpa-variation-advances-in-biochemical-and-clinical-research
#15
Nicholas E Burgis
Human ITPase (encoded by the ITPA gene) is a protective enzyme which acts to exclude noncanonical (deoxy)nucleoside triphosphates ((d)NTPs) such as (deoxy)inosine 5'-triphosphate ((d)ITP), from (d)NTP pools. Until the last few years, the importance of ITPase in human health and disease has been enigmatic. In 2009, an article was published demonstrating that ITPase deficiency in mice is lethal. All homozygous null offspring died before weaning as a result of cardiomyopathy due to a defect in the maintenance of quality ATP pools...
October 22, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27769241/therapeutic-effect-of-berberine-on-tdp-43-related-pathogenesis-in-ftld-and-als
#16
Cheng-Fu Chang, Yi-Chao Lee, Kuen-Haur Lee, Hui-Ching Lin, Chia-Ling Chen, Che-Kun James Shen, Chi-Chen Huang
BACKGROUND: In the central nervous system regions of the sporadic and familial FTLD and ALS patients, TDP-43 has been identified as the major component of UBIs inclusions which is abnormally hyperphosphorylated, ubiquitinated, and cleaved into C-terminal fragments to form detergent-insoluble aggregates. So far, the effective drugs for FTLD and ALS neurodegenerative diseases are yet to be developed. Autophagy has been demonstrated as the major metabolism route of the pathological TDP-43 inclusions, hence activation of autophagy is a potential therapeutic strategy for TDP-43 pathogenesis in FTLD and ALS...
October 21, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27733149/rna-binding-protein-nova1-promotes-tumor-growth-in-vivo-and-its-potential-mechanism-as-an-oncogene-may-due-to-its-interaction-with-gabaa-receptor-%C3%AE-2
#17
Yi-An Zhang, Hai-Ning Liu, Ji-Min Zhu, Dan-Ying Zhang, Xi-Zhong Shen, Tao-Tao Liu
BACKGROUND: The mechanism of Nova1's role in hepatocellular carcinoma has not been delineated. Also its interaction with GABAA receptor γ2 in HCC is unveiled. This study is aimed to make it clear the distribution, prognostic value of GABAARγ2 in human hepatocellular carcinoma. And its role in HCC tumorigenesis under the regulation of its alternative splicing factor Nova1. METHODS: Immunohistochemistry staining was used to investigate the distribution and clinical significance of GABAARγ2 protein expression in hepatocellular carcinoma...
October 12, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27716280/rab-mediated-vesicle-trafficking-in-cancer
#18
Hong-Tai Tzeng, Yi-Ching Wang
A large group of small Rab GTPases which mediate secretory and endosomal membrane transport, as well as autophagosome biogenesis, are essential components of vesicle trafficking machinery. Specific Rab protein together with the cognate effectors coordinates the dynamics of trafficking pathway and determines the cargo proteins destination. Functional impairments of Rab proteins by mutations or post-translational modifications disrupting the regulatory network of vesicle trafficking have been implicated in tumorigenesis...
October 6, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27716281/glycine-n-methyltransferase-deficiency-in-female-mice-impairs-insulin-signaling-and-promotes-gluconeogenesis-by-modulating-the-pi3k-akt-pathway-in-the-liver
#19
Yi-Jen Liao, Tzong-Shyuan Lee, Yuh-Ching Twu, Shih-Ming Hsu, Ching-Ping Yang, Chung-Kwe Wang, Yu-Chih Liang, Yi-Ming Arthur Chen
BACKGROUND: Glycine N-methyltransferase (GNMT) is abundantly expressed in the normal liver but is down-regulated in liver cancer tissues. GNMT knockout (Gnmt-/-) mice can spontaneously develop chronic hepatitis, fatty liver, and liver cancer. We previously demonstrated that hepatic GNMT is decreased in high-fat-diet-induced type 2 diabetes mellitus, but its contribution to metabolic syndrome is unclear. Here we show that GNMT modulates key aspects of metabolic syndrome in mice. METHODS: Eleven-week-old Gnmt-/- and wild-type (WT) mice with a C57BL/6 genetic background were used in this study...
October 4, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27716214/administration-of-amd3100-in-endotoxemia-is-associated-with-pro-inflammatory-pro-oxidative-and-pro-apoptotic-effects-in-vivo
#20
Semjon Seemann, Amelie Lupp
BACKGROUND: Chemokine receptor 4 (CXCR4) is a multifunctional G protein-coupled receptor that is activated by its natural ligand, C-X-C motif chemokine 12 (CXCL12). As a likely member of the lipopolysaccharide (LPS)-sensing complex, CXCR4 is involved in pro-inflammatory cytokine production and exhibits substantial chemo-attractive activity for various inflammatory cells. Here, we aimed to characterize the effects of CXCR4 blockade in systemic inflammation and to evaluate its impact on organ function...
October 3, 2016: Journal of Biomedical Science
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