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https://www.readbyqxmd.com/read/29133184/jnk-is-antagonized-to-ensure-the-correct-number-of-interommatidial-cells-pattern-the-drosophila-retina
#1
Henry L Bushnell, Christina E Feiler, Kwami F Ketosugbo, Mark B Hellerman, Valerie L Nazzaro, Ruth I Johnson
Apoptosis is crucial during the morphogenesis of most organs and tissues, and is utilized for tissues to achieve their proper size, shape and patterning. Many signaling pathways contribute to the precise regulation of apoptosis. Here we show that Jun N-terminal Kinase (JNK) activity contributes to the coordinated removal of interommatidial cells via apoptosis in the Drosophila pupal retina. This is consistent with previous findings that JNK activity promotes apoptosis in other epithelia. However, we found that JNK activity is repressed by Cindr (the CIN85 and CD2AP ortholog) in order to promote cell survival...
November 10, 2017: Developmental Biology
https://www.readbyqxmd.com/read/29038887/mutations-in-inf2-may-be-associated-with-renal-histology-other-than-focal-segmental-glomerulosclerosis
#2
Anja K Büscher, Nora Celebi, Peter F Hoyer, Hanns-Georg Klein, Stefanie Weber, Julia Hoefele
BACKGROUND: In 2010, INF2 mutations were associated with autosomal-dominant focal segmental glomerulosclerosis (FSGS), clinically presenting with moderate proteinuria in adolescence. However, in the meantime, cases with more severe clinical courses have been described, including progression to end-stage renal disease (ESRD) during childhood. INF2 mutations in patients with isolated FSGS are clustered in exons 2 to 4, encoding the diaphanous inhibitory domain, involved in the regulation of the podocyte actin cytoskeleton...
October 6, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28986432/adaptor-protein-cd2ap-and-l-type-lectin-lman2-regulate-exosome-cargo-protein-trafficking-through-the-golgi-complex
#3
Sang-Ho Kwon, Sekyung Oh, Marisa Nacke, Keith E Mostov, Joshua H Lipschutz
No abstract text is available yet for this article.
October 6, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28984604/alzheimer-s-disease-related-polymorphisms-in-shunt-responsive-idiopathic-normal-pressure-hydrocephalus
#4
Joel Huovinen, Seppo Helisalmi, Jussi Paananen, Tiina Laiterä, Maria Kojoukhova, Anna Sutela, Ritva Vanninen, Marjo Laitinen, Tuomas Rauramaa, Anne M Koivisto, Anne M Remes, Hilkka Soininen, Mitja Kurki, Annakaisa Haapasalo, Juha E Jääskeläinen, Mikko Hiltunen, Ville Leinonen
BACKGROUND: Idiopathic normal pressure hydrocephalus (iNPH) is a late onset, surgically treated progressive brain disease caused by impaired cerebrospinal fluid dynamics and subsequent ventriculomegaly. Comorbid Alzheimer's disease (AD) seems to be frequent in iNPH. OBJECTIVE: We aim to evaluate the role of AD-related polymorphisms in iNPH. METHODS: Overall 188 shunt-operated iNPH patients and 688 controls without diagnosed neurodegenerative disease were included into analysis...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28878342/inhibition-of-ship2-in-cd2ap-deficient-podocytes-ameliorates-reactive-oxygen-species-generation-but-aggravates-apoptosis
#5
Pauliina Saurus, Tuomas A Tolvanen, Sonja Lindfors, Sara Kuusela, Harry Holthöfer, Eero Lehtonen, Sanna Lehtonen
Lack of CD2-associated protein (CD2AP) in mice increases podocyte apoptosis and leads to glomerulosclerosis and renal failure. We showed previously that SHIP2, a negative regulator of the PI3K/AKT signalling pathway, interacts with CD2AP. Here, we found that the expression level and activity of SHIP2 and production of reactive oxygen species (ROS) are increased in cultured CD2AP knockout (CD2AP-/-) mouse podocytes. Oxidative stress was also increased in CD2AP-/- mouse glomeruli in vivo. We found that puromycin aminonucleoside (PA), known to increase ROS production and apoptosis, increases SHIP2 activity and reduces CD2AP expression in cultured human podocytes...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814739/re-characterization-of-the-glomerulopathy-in-cd2ap-deficient-mice-by-high-resolution-helium-ion-scanning-microscopy
#6
Kenji Tsuji, Teodor G Păunescu, Hani Suleiman, Dongping Xie, Fahmy A Mamuya, Jeffrey H Miner, Hua A Jenny Lu
Helium ion scanning microscopy (HIM) is a novel technology that directly visualizes the cell surface ultrastructure without surface coating. Despite its very high resolution, it has not been applied extensively to study biological or pathology samples. Here we report the application of this powerful technology to examine the three-dimensional ultrastructural characteristics of proteinuric glomerulopathy in mice with CD2-associated protein (CD2AP) deficiency. HIM revealed the serial alteration of glomerular features including effacement and disorganization of the slit diaphragm, followed by foot process disappearance, flattening and fusion of major processes, and eventual transformation into a podocyte sheet as the disease progressed...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28719912/crocin-protects-podocytes-against-oxidative-stress-and-inflammation-induced-by-high-glucose-through-inhibition-of-nf-%C3%AE%C2%BAb
#7
Sutong Li, Xiaoxia Liu, Jie Lei, Junle Yang, Puxun Tian, Yi Gao
BACKGROUND/AIMS: Diabetic nephropathy (DN) is a microangiopathic disease characterized by excessive urinary albumin excretion, which occurs in 30% of patients with diabetes mellitus. It is the second leading cause of end-stage renal diseases in China. Nuclear factor-kappa B (NF-κB) is reported to be closely correlated with the inflammation underlying diabetes-associated renal damage. Crocin, a plant-derived compound, has antioxidant properties that may inhibit NF-κB. METHODS: In the present study, we used a conditionally immortalized mouse podocyte cell line to explore whether crocin could effectively block albuminuria...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28714518/regulation-of-tubular-recycling-endosome-biogenesis-by-the-p53-micall1-pathway
#8
Yukie Takahashi, Chizu Tanikawa, Takafumi Miyamoto, Makoto Hirata, Guanxiong Wang, Koji Ueda, Tsunehiko Komatsu, Koichi Matsuda
p53, one of the most frequently mutated genes in colon cancer, suppresses cancer development through transactivation of its targets. Herein, we conducted a comprehensive analysis of the p53 downstream pathway in colorectal cancer by using multi-omics analysis. Mass spectrometric analysis of HCT116 p53+/+ and HCT116 p53-/- cells treated with adriamycin identified 124 proteins increased by DNA damage in a p53-dependent manner. Further screening using a cDNA microarray and the TCGA database revealed MICALL1 as a novel p53 target, and we identified functional p53 binding motifs located approximately 3000 base pairs upstream of the MICALL1 gene...
August 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28709640/genome-wide-identification-of-genes-essential-for%C3%A2-podocyte-cytoskeletons-based%C3%A2-on%C3%A2-single-cell-rna%C3%A2-sequencing
#9
Yuqiu Lu, Yuting Ye, Wenduona Bao, Qianqian Yang, Jinquan Wang, Zhihong Liu, Shaolin Shi
Gene expression differs substantially among individual cells of the same type. We speculate that genes that are expressed in all but a portion of cells of a given cell type would be likely essential and required for either the cell survival (housekeeping) or for the cell type's unique structure and function, enabling the organism to survive. Here, we performed RNA-seq of 20 mouse podocytes using the Fluidigm C1 system and identified 335 genes that were expressed in all of them. Among them, 239 genes were also expressed in mesangial and endothelial cells and were involved in energy metabolism, protein synthesis, etc...
November 2017: Kidney International
https://www.readbyqxmd.com/read/28650998/functional-annotation-of-alzheimer-s-disease-associated-loci-revealed-by-gwass
#10
Zengpeng Han, Han Huang, Yue Gao, Qingyang Huang
Genome-wide association studies (GWASs) discovered a number of SNPs and genes associated with Alzheimer's disease (AD). However, how these SNPs and genes influence the liability to AD is not fully understood. We deployed computational approaches to explore the function and action mechanisms of AD -related SNPs and genes identified by GWASs, including the effects of 195 GWAS lead SNPs and 338 proxy SNPs on miRNAs binding and protein phosphorylation, their RegulomeDB and 3DSNP scores, and gene ontology, pathway enrichment and protein-protein interaction network of 126 AD-associated genes...
2017: PloS One
https://www.readbyqxmd.com/read/28608180/montelukast-improves-the-changes-of-cytoskeletal-and-adaptor-proteins-of-human-podocytes-by-interleukin-13
#11
Tae-Sun Ha, Ja Ae Nam, Su-Bin Seong, Moin A Saleem, Se Jin Park, Jae Il Shin
OBJECTIVE AND DESIGN: Interleukin-13 (IL-13) has recently been reported to be a potential cytokine in the pathogenesis of minimal-change nephrotic syndrome (MCNS). However, the mechanistic insights associated with podocyte dysfunction mediated by IL-13-induced changes in various slit diaphragm (SD) and cytoskeletal molecules have not yet been shown in cultured human podocytes in vitro. MATERIALS: Human conditionally immortalized podocytes were used. TREATMENT: Podocytes were incubated with various concentrations of IL-13 during the indicated time periods (6, 12, and 24 h) and montelukast was administered with the dose of 0...
September 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28535972/the-first-report-of-cd2-associated-protein-gene-in-a-teleost-rock-bream-oplegnathus-fasciatus-an-investigation-of-the-immune-response-upon-infection-with-several-pathogens
#12
Dong-Hee Cho, Jin-Sol Bae, Ji-Min Jeong, Hyun-Ja Han, Deok Chan Lee, Mi Young Cho, Sung Hee Jung, Do-Hyung Kim, Chan-Il Park
CD2 is expressed on the surfaces of virtually all T cells and natural killer (NK) cells. In mammals, the CD2 molecule is 50 kDa. The cytoplasmic tail of CD2 interacts with CD2-associated protein (CD2AP), which plays an important role in mediating the trigger signal in outer magnetic pole cells. In this study, we identified CD2AP from rock bream and investigated its gene expression. The ORF of CD2AP (1950 bp) encodes 650 amino acids (aa). CD2AP has a Src homology 3 (SH3) domain. Quantitative real-time PCR analysis revealed that CD2AP shows higher expression in the gills and skin...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28528353/adrenomedullin-ameliorates-podocyte-injury-induced-by-puromycin-aminonucleoside-in-vitro-and-in-vivo-through-modulation-of-rho-gtpases
#13
Nan Dong, Lixia Meng, Ruqun Xue, Meng Yu, Zhonghua Zhao, Xueguang Liu
PURPOSE: Podocyte injury is a key event in proteinuric kidney disease and eventually glomerular scarring. While adrenomedullin (AM), a potent vasodilatory peptide, has been reported to confer renoprotection in several experimental models of kidney diseases, its effect on injured podocytes and the related mechanism is still largely unknown. METHODS: Employing Western blotting analysis, immunoprecipitation and immunofluorescence, we investigated the effects of AM on the expressions of podocyte cytoskeletal proteins and Rho-family small GTPases (Rho GTPases) in puromycin aminonucleoside (PAN)-induced podocyte injury, both in cultured podocytes and in PAN nephrosis rats...
August 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28484055/endothelial-cd2ap-binds-the-receptor-icam-1-to-control-mechanosignaling-leukocyte-adhesion-and-the-route-of-leukocyte-diapedesis-in-vitro
#14
Antje Schaefer, Trynette J van Duijn, Jisca Majolee, Keith Burridge, Peter L Hordijk
Inflammation is driven by excessive transmigration (diapedesis) of leukocytes from the blood to the tissue across the endothelial cell monolayer that lines blood vessels. Leukocyte adhesion, crawling, and transmigration are regulated by clustering of the endothelial mechanosensitive receptor intercellular adhesion molecule-1 (ICAM-1). Whereas several proteins are known to promote ICAM-1 function, the molecular mechanisms that limit ICAM-1-mediated adhesion to prevent excessive leukocyte transmigration remain unknown...
June 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28392172/decreased-gene-expression-of-cd2ap-in-chinese-patients-with-sporadic-alzheimer-s-disease
#15
Qing-Qing Tao, Zhi-Jun Liu, Yi-Min Sun, Hong-Lei Li, Ping Yang, De-Shan Liu, Bin Jiang, Xiao-Yan Li, Jian-Feng Xu, Zhi-Ying Wu
Many sporadic Alzheimer's disease (SAD) risk genes have been identified in the last decades, but most of them have not been consistently accepted. Here, we sought to identify SAD-associated genes and their potential mechanisms involved in SAD pathogenesis. A 2-stage design was employed. In stage 1, 95 variants in 75 genes that were previously reported as SAD-risk genes in Caucasian populations were evaluated in 1857 subjects (422 SAD patients and 1435 controls). In stage 2, a subset of promising variants found in stage 1 were further evaluated in an independent cohort of 1001 subjects (254 SAD and 747 controls)...
March 16, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28228401/wolf-hirschhorn-syndrome-candidate-1-like-1-epigenetically-regulates-nephrin-gene-expression
#16
Yugo Ito, Kan Katayama, Yukino Nishibori, Yoshihiro Akimoto, Akihiko Kudo, Ryota Kurayama, Ichiro Hada, Shohei Takahashi, Toru Kimura, Toshiyuki Fukutomi, Tomohisa Katada, Junichi Suehiro, Olga Beltcheva, Karl Tryggvason, Kunimasa Yan
Altered expression of nephrin underlies the pathophysiology of proteinuria in both congenital and acquired nephrotic syndrome. However, the epigenetic mechanisms of nephrin gene regulation remain elusive. Here, we show that Wolf-Hirschhorn syndrome candidate 1-like 1 long form (WHSC1L1-L) is a novel epigenetic modifier of nephrin gene regulation. WHSC1L1-L was associated with histone H3K4 and H3K36 in human embryonic kidney cells. WHSC1L1-L gene was expressed in the podocytes, and functional protein product was detected in these cells...
June 1, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28218578/bone-marrow-derived-mesenchymal-stem-cells-ameliorate-nephrosis-through-repair-of-impaired-podocytes
#17
Yi Chen, Jun Chen, Jianxin Wan, Na Gao, Jiong Cui, Danyu You, Zhenhuan Zou
PURPOSE: The purpose of this study was to investigate the effects of bone marrow-derived mesenchymal stem cells (BMSC) on podocytes of puromycin amino nuclear glucoside (PAN) -induced nephrosis in mice. METHODS: Mice were randomly divided into Control, PAN and BMSC groups. Mice were injected with PAN (0.5 mg/g weight) via the tail vein. The 24-h urinary protein was obtained after modelling, and urinary protein excretion was determined. The blood and kidney specimens were isolated after the tenth day of modelling...
February 19, 2017: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/28199971/association-and-interaction-effects-of-alzheimer-s-disease-associated-genes-and-lifestyle-on-cognitive-aging-in-older-adults-in-a-taiwanese-population
#18
Eugene Lin, Shih-Jen Tsai, Po-Hsiu Kuo, Yu-Li Liu, Albert C Yang, Chung-Feng Kao
Genome-wide association studies and meta-analyses implicated that increased risk of developing Alzheimer's diseases (AD) has been associated with the ABCA7, APOE, BIN1, CASS4, CD2AP, CD33, CELF1, CLU, CR1, DSG2, EPHA1, FERMT2, HLA-DRB1, HLA-DRB4, INPP5D, MEF2C, MS4A4A, MS4A4E, MS4A6E, NME8, PICALM, PLD3, PTK2B, RIN3, SLC24A4, SORL1, and ZCWPW1 genes. In this study, we assessed whether single nucleotide polymorphisms (SNPs) within these 27 AD-associatedgenes are linked with cognitive aging independently and/or through complex interactions in an older Taiwanese population...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28163747/tangzhiqing-granules-alleviate-podocyte-epithelial-mesenchymal-transition-in-kidney-of-diabetic-rats
#19
Haiyan Xu, Xu Wang, Mingming Liu, Xueyuan He
This study discussed the effect of Tangzhiqing granules on podocyte epithelial-mesenchymal transition in kidney of diabetic rats. The diabetic rats were divided randomly into five groups: DM group treated with vehicle, Tangzhiqing granules low-dose treatment group, Tangzhiqing granules middle-dose treatment group, and Tangzhiqing granules high-dose treatment group. Eight Wistar rats used as control group were given saline solution. The intervention was all intragastric administration for 8 weeks. At the end of the 8 weeks, biochemical parameters and kidney weight/body weight ratio were measured...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28123638/nicousamide-protects-kidney-podocyte-by-inhibiting-the-tgf%C3%AE-receptor-ii-phosphorylation-and-age-rage-signaling
#20
Sen Zhang, Dongjie Wang, Nina Xue, Fangfang Lai, Ming Ji, Jing Jin, Xiaoguang Chen
Nicousamide, a clinical phase II renal protective new drug, has been demonstrated to have renal protective effect on diabetic nephropathy (DN) by experimental animal model. Its known molecular mechanisms include AGE formation blocking and moderately decreasing the blood pressure. Nicousamide shows potential on attenuating albuminuria, thereby suggests it might have protective effect on podocytes. The aim of present study was to investigate whether nicousamide could protect integrity of podocytes, and further its protection mechanisms...
2017: American Journal of Translational Research
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