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https://www.readbyqxmd.com/read/28550248/cd44-splice-variants-as-potential-players-in%C3%A2-alzheimer-s-disease-pathology
#1
Elhanan Pinner, Yaron Gruper, Micha Ben Zimra, Don Kristt, Moshe Laudon, David Naor, Nava Zisapel
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized by cognitive deficits, deposition of amyloid-β (Aβ) plaques, intracellular neurofibrillary tangles, and neuronal cell death. Neuroinflammation is commonly believed to participate in AD pathogenesis. CD44 is an inflammation-related gene encoding a widely-distributed family of alternatively spliced cell surface glycoproteins that have been implicated in inflammation, metastases, and inflammation-linked neuronal injuries. Here we investigated the expression patterns of CD44S (which does not contain any alternative exon) and CD44 splice variants in postmortem hippocampal samples from AD patients and matched non-AD controls...
May 25, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28549377/biocompatibility-of-liposome-nanocarriers-in-the-rat-inner-ear-after-intratympanic-administration
#2
Jing Zou, Hao Feng, Rohit Sood, Paavo K J Kinnunen, Ilmari Pyykko
Liposome nanocarriers (LPNs) are potentially the future of inner ear therapy due to their high drug loading capacity and efficient uptake in the inner ear after a minimally invasive intratympanic administration. However, information on the biocompatibility of LPNs in the inner ear is lacking. The aim of the present study is to document the biocompatibility of LPNs in the inner ear after intratympanic delivery. LPNs with or without gadolinium-tetra-azacyclo-dodecane-tetra-acetic acid (Gd-DOTA) were delivered to the rats through transtympanic injection...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28548819/tuning-the-properties-of-polymer-capsules-for-cellular-interactions
#3
Huanli Sun, Jiwei Cui, Yi Ju, Xi Chen, Edgar H H Wong, Jenny Tran, Greg G Qiao, Frank Caruso
Particle-cell interactions are governed by, among other factors, the composition and surface properties of the particles. Herein, we report the preparation of various polymer capsules with different compositions and properties via atom transfer radical polymerization mediated continuous assembly of polymers (CAPATRP), where the cellular interactions of these capsules, particularly fouling and specific targeting, are examined by flow cytometry and deconvolution microscopy. Acrylated eight-arm poly(ethylene glycol) (8-PEG) and poly(N-(2-hydroxypropyl)-methacrylamide) (PHPMA) as well as methacrylated hyaluronic acid (HA), poly(glutamic acid) (PGA), and poly(methacrylic acid) (PMA) are used as macro-cross-linkers to obtain a range of polymer capsules with different compositions (PEG, PHPMA, HA, PGA, and PMA)...
May 26, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28546458/proteoglycans-ion-channels-and-cell-matrix-adhesion
#4
REVIEW
Ioli Mitsou, Hinke A B Multhaupt, John R Couchman
Cell surface proteoglycans comprise a transmembrane or membrane-associated core protein to which one or more glycosaminoglycan chains are covalently attached. They are ubiquitous receptors on nearly all animal cell surfaces. In mammals, the cell surface proteoglycans include the six glypicans, CD44, NG2 (CSPG4), neuropilin-1 and four syndecans. A single syndecan is present in invertebrates such as nematodes and insects. Uniquely, syndecans are receptors for many classes of proteins that can bind to the heparan sulphate chains present on syndecan core proteins...
May 25, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28545132/proteomics-investigation-of-oscc-specific-salivary-biomarkers-in-a-hungarian-population-highlights-the-importance-of-identification-of-population-tailored-biomarkers
#5
Éva Csősz, Péter Lábiscsák, Gergő Kalló, Bernadett Márkus, Miklós Emri, Adrienn Szabó, Ildikó Tar, József Tőzsér, Csongor Kiss, Ildikó Márton
Oral squamous cell carcinoma (OSCC) accounting for about 90% of malignant oral lesions is the 6th most common malignancy worldwide. Diagnostic delay may contribute to dismal survival rate therefore, there is a need for developing specific and sensitive biomarkers to improve early detection. Hungarian population occupies the top places of statistics regarding OSCC incidence and mortality figures therefore, we aimed at finding potential salivary protein biomarkers suitable for the Hungarian population. In this study we investigated 14 proteins which were previously reported as significantly elevated in saliva of patients with OSCC...
2017: PloS One
https://www.readbyqxmd.com/read/28543784/improvement-of-hydration-and-epidermal-barrier-function-in-human-skin-by-a-novel-compound-isosorbide-dicaprylate
#6
Ratan K Chaudhuri, Krzysztof Bojanowski
OBJECTIVE: The study involved the synthesis of a novel derivative of caprylic acid - isosorbide dicaprylate (IDC) - and the evaluation of its potential in improving water homeostasis and epidermal barrier function in human skin. METHODS: The effect of IDC on gene expression was assayed in skin organotypic cultures by DNA microarrays. The results were then confirmed for a few key genes by quantitative PCR, immuno- and cytochemistry. Final validation of skin hydration properties was obtained by four separate clinical studies...
May 24, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28543188/cd44-deletion-leading-to-attenuation-of-experimental-autoimmune-encephalomyelitis-results-from-alterations-in-gut-microbiome-in-mice
#7
Kumaraswamy Naidu Chitrala, Hongbing Guan, Narendra P Singh, Brandon Busbee, Alexa Gandy, Pegah Mehrpouya-Bahrami, Mitra S Ganewatta, Chuanbing Tang, Saurabh Chatterjee, Prakash Nagarkatti, Mitzi Nagarkatti
Dysbiosis in gut microbiome has been shown to be associated with inflammatory and autoimmune diseases. Previous studies from our laboratory demonstrated the pivotal role played by CD44 in the regulation of experimental autoimmune encephalomyelitis (EAE), a murine model of multiple sclerosis. In the current study, we determined whether these effects resulted from an alteration in gut microbiota and the short-chain fatty acid (SCFA) production in CD44KO mice. Fecal transfer from naïve CD44KO but not CD44WT mice, into EAE-induced CD44WT mice, led to significant amelioration of EAE...
May 23, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28542307/the-mouse-char10-locus-regulates-severity-of-pyruvate-kinase-deficiency-and-susceptibility-to-malaria
#8
Aurélie Laroque, Gundula Min-Oo, Mifong Tam, Prem Ponka, Mary M Stevenson, Philippe Gros
Pyruvate kinase (PKLR) deficiency protects mice and humans against blood-stage malaria. Although mouse strain AcB62 carries a malaria-protective PklrI90N genetic mutation, it is phenotypically susceptible to blood stage malaria induced by infection with Plasmodium chabaudi AS, suggesting a genetic modifier of the PklrI90N protective effect. Linkage analysis in a F2 cross between AcB62 (PklrI90N) and another PK deficient strain CBA/Pk (PklrG338D) maps this modifier (designated Char10) to chromosome 9 (LOD = 10...
2017: PloS One
https://www.readbyqxmd.com/read/28540720/specifically-increased-paclitaxel-release-in-tumor-and-synergetic-therapy-by-a-hyaluronic-acid-tocopherol-nanomicelle
#9
Hanbo Zhang, Wei Li, Xiaomeng Guo, Fenfen Kong, Zuhua Wang, Chunqi Zhu, Lihua Luo, Qingpo Li, Jie Yang, Yongzhong Du, Jian You
Recently, interest in tumor-targeting and site-specific drug release from nanoparticles as a means of drug delivery has increased. In this study, we reported on a smart nanosized micelle formed by hyaluronic acid (HA) conjugated with D-α-Tocopherol Succinate (TOS) using a disulfide bond as the linker (HA-SS-TOS, HSST). HSST micelles can specifically bind to the CD44 receptors that are overexpressed on cancer cells. The high levels of glutathione (GSH) in tumor cells selectively break the disulfide bond linker...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28539430/physiologic-thymic-involution-underlies-age-dependent-accumulation-of-senescence-associated-cd4-t-cells
#10
Kyosuke Sato, Aiko Kato, Miho Sekai, Yoko Hamazaki, Nagahiro Minato
Immune aging may underlie various aging-related disorders, including diminished resistance to infection, chronic inflammatory disorders, and autoimmunity. PD-1(+) and CD153(+) CD44(high) CD4(+) T cells with features of cellular senescence, termed senescence-associated T (SA-T) cells, increasingly accumulate with age and may play a role in the immune aging phenotype. In this article, we demonstrate that, compared with young mice, the aged mouse environment is highly permissive for spontaneous proliferation of transferred naive CD4(+) T cells, and it drives their transition to PD-1(+) and CD153(+) CD44(high) CD4(+) T cells after extensive cell divisions...
May 24, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28539429/bolstering-the-number-and-function-of-hsv-1-specific-cd8-effector-memory-t-cells-and-tissue-resident-memory-t-cells-in-latently-infected-trigeminal-ganglia-reduces-recurrent-ocular-herpes-infection-and-disease
#11
Arif A Khan, Ruchi Srivastava, Aziz A Chentoufi, Elizabeth Kritzer, Sravya Chilukuri, Sumit Garg, David C Yu, Hawa Vahed, Lei Huang, Sabrina A Syed, Julie N Furness, Tien T Tran, Nesburn B Anthony, Christine E McLaren, John Sidney, Alessandro Sette, Randolph J Noelle, Lbachir BenMohamed
HSV type 1 (HSV-1) is a prevalent human pathogen that infects >3.72 billion individuals worldwide and can cause potentially blinding recurrent corneal herpetic disease. HSV-1 establishes latency within sensory neurons of trigeminal ganglia (TG), and TG-resident CD8(+) T cells play a critical role in preventing its reactivation. The repertoire, phenotype, and function of protective CD8(+) T cells are unknown. Bolstering the apparent feeble numbers of CD8(+) T cells in TG remains a challenge for immunotherapeutic strategies...
May 24, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28539339/mif-2-d-dt-enhances-proximal-tubular-cell-regeneration-through-slpi-and-atf4-dependent-mechanisms
#12
Akinobu Ochi, Dong Chen, Wibke Schulte, Lin Leng, Nickolas Gilbert Moeckel, Marta Piecychna, Luisa Averdunk, Christian Stoppe, Richard Bucala, Gilbert W Moeckel
Macrophage migration inhibitory factor (MIF) is a cytokine with pleiotropic actions that is produced by several organs and cell types. Depending on the target cell and the inflammatory context, MIF can engage its two component receptor complex CD74 and CD44, and the chemokine receptors CXCR2/4. MIF is constitutively expressed in renal proximal tubular cells, stored in intracellular preformed pools and is released at a low rate. Recently a second MIF-like protein (i.e. MIF-2/D-DT) has been characterized in mammals...
May 24, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28537471/characteristics-of-labial-gland-mesenchymal-stem-cells-of-healthy-individuals-and-patients-with-sj%C3%A3-gren-syndrome-a-preliminary-study
#13
Shiqin Wang, Hong Hua, Yixiang Wang
Sjögren's Syndrome (SS) is a systemic autoimmune disease characterized by focal lymphocytic infiltration into exocrine organs such as salivary and lacrimal glands, resulting in dry mouth and eyes, and other systemic injuries. The mesenchymal stem cells (MSCs) in the salivary glands of healthy individuals and patients with SS have not been extensively studied. The aim of this study was to eluciadate the characteristics of MSCs from the labial glands of healthy controls and of those from patients with SS in order to elucidate the related pathogenesis and uncover potential avenues for novel clinical interventions...
May 24, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28536422/secreted-frizzled-related-protein-4-sfrp4-chemo-sensitizes-cancer-stem-cells-derived-from-human-breast-prostate-and-ovary-tumor-cell-lines
#14
A Deshmukh, S Kumar, F Arfuso, P Newsholme, A Dharmarajan
This study investigated molecular signals essential to sustain cancer stem cells (CSCs) and assessed their activity in the presence of secreted frizzled-related protein 4 (sFRP4) alone or in combination with chemotherapeutic drugs. SFRP4 is a known Wnt antagonist, and is also pro-apoptotic and anti-angiogenic. Additionally, sFRP4 has been demonstrated to confer chemo-sensitization and improve chemotherapeutic efficacy. CSCs were isolated from breast, prostate, and ovary tumor cell lines, and characterized using tumor-specific markers such as CD44(+)/CD24(-)/CD133(+)...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28533445/lung-cd4-tissue-resident-memory-t-cells-mediate-adaptive-immunity-induced-by-previous-infection-of-mice-with-bordetella-pertussis
#15
Mieszko M Wilk, Alicja Misiak, Róisín M McManus, Aideen C Allen, Marina A Lynch, Kingston H G Mills
Th1 and Th17 cells have an established role in protective immunity to Bordetella pertussis, but this evidence is based largely on peripheral T cells. There is emerging evidence that local tissue-resident memory T (TRM) cells that accumulate in tissue following mucosal infection may be crucial for long-term immunity. In this study, we examined the role of respiratory CD4 TRM cells in immunity to B. pertussis Natural immunity to B. pertussis induced by infection is considered long lasting and effective at preventing reinfection...
May 22, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28533273/akt-signaling-is-sustained-by-a-cd44-splice-isoform-mediated-positive-feedback-loop
#16
Sali Liu, Chonghui Cheng
Tumor cells nearly invariably evolve sustained PI3K/Akt signaling as an effective means to circumvent apoptosis and maintain survival. However, for those tumor cells that do not acquire PI3K/Akt mutations to achieve this end the underlying mechanisms have remained obscure. Here we describe the discovery of a splice isoform-dependent positive feedback loop that is essential to sustain PI3K/Akt signaling in breast cancer. Splice isoform CD44s promoted expression of the hyaluronan synthase HAS2 by activating the Akt signaling cascade...
May 22, 2017: Cancer Research
https://www.readbyqxmd.com/read/28528300/treating-metastatic-triple-negative-breast-cancer-with-cd44-neuropilin-dual-molecular-targets-of-multifunctional-nanoparticles
#17
De-Sheng Liang, Wen-Jie Zhang, Ai-Ting Wang, Hai-Tao Su, Hai-Jun Zhong, Xian-Rong Qi
Metastasis of cancer makes up the vast majority of cancer-related deaths, and it usually initiates from tumor cells invasiveness and develops through tumor neovasculature. In this work, we have fabricated a CD44/neuropilin dual receptor-targeting nanoparticulate system (tLyP-1-HT NPs) with endogenous or FDA approved components for treating metastatic triple negative breast cancer (TNBC). The enhanced specific targeting of tLyP-1-HT NPs to both metastatic tumor cells and metastasis-supporting tumor neovasculature was contributed by means of CD44/neuropilin dual receptor-mediated interaction...
May 13, 2017: Biomaterials
https://www.readbyqxmd.com/read/28526992/epithelial-mesenchymal-transition-emt-in-metastatic-breast-cancer-in-omani-women
#18
Ritu Lakhtakia, Adil Aljarrah, Muhammad Furrukh, Shyam S Ganguly
Breast cancer (BC) in Oman affects younger women and has a more aggressive course. Clinical and biological variables like age, pregnancy, tumor size, type, grade, receptor expression and proliferation predict disease aggression but there is no direct predictor of metastasis except lymphovascular invasion. Epithelial-mesenchymal transition (EMT) is characterized by epithelial cells losing epithelial and acquiring mesenchymal morpho-immunophenotypic characteristics. In tumors, EMT-like transitions may signify a metastatic phenotype and have features in common with cancer stem cells (CSC) which show resistance to chemotherapy...
May 19, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28526879/musashi-1-promotes-a-cancer-stem-cell-lineage-and-chemoresistance-in-colorectal-cancer-cells
#19
Guang-Yuh Chiou, Tzu-Wei Yang, Chi-Chou Huang, Chia-Ying Tang, Jung-Yi Yen, Ming-Chang Tsai, Hsuan-Yi Chen, Nurul Fadhilah, Chun-Che Lin, Yuh-Jyh Jong
Colorectal cancers (CRCs) are a critical health issue worldwide. Cancer stem cell (CSC) lineages are associated with tumour transformation, progression, and malignant transformation. However, how lineages are transformed and how chemoresistance is acquired by CRCs remain largely unknown. In this report, we demonstrated that the RNA-binding protein Musashi-1 enhanced the development of CD44(+) colorectal CSCs and triggered the formation of anti-apoptotic stress granules (SGs). Our results indicated that CD44(+) CSC lineage-specific induction of tumour malignancies was controlled by Musashi-1...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28524540/antineoplastic-effects-of-clove-buds-syzygium-aromaticum-l-in-the-model-of-breast-carcinoma
#20
Peter Kubatka, Sona Uramova, Martin Kello, Karol Kajo, Peter Kruzliak, Jan Mojzis, Desanka Vybohova, Marian Adamkov, Karina Jasek, Zora Lasabova, Pavol Zubor, Silvia Fialova, Svetlana Dokupilova, Peter Solar, Martin Pec, Katarina Adamicova, Jan Danko, Mariusz Adamek, Dietrich Busselberg
It is supposed that plant functional foods, rich in phytochemicals, may potentially have preventive effects in carcinogenesis. In this study, the anticancer effects of cloves in the in vivo and in vitro mammary carcinoma model were assessed. Dried flower buds of cloves (CLOs) were used at two concentrations of 0.1% and 1% through diet during 13 weeks after the application of chemocarcinogen. After autopsy, histopathological and immunohistochemical analyses of rat mammary carcinomas were performed. Moreover, in vitro evaluation using MCF-7 cells was carried out...
May 19, 2017: Journal of Cellular and Molecular Medicine
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