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Podocalyxin

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https://www.readbyqxmd.com/read/28757276/value-of-immunohistochemical-expression-of-podocalyxin-in-active-lupus-nephritis
#1
Maha Abdelmoneim Behairy, Marwa Mosaad Shakweer, Tamer Wahid El Said, Nermin Hassan ElGharbawy
Podocalyxin is an electronegative sialoglycoprotein that prevents the podocyte foot process from collapsing. The aim of this study was to detect an association between the glomerular immunohistochemical (IHC) expression of podocalyxin and the degree of podocyte effacement detected by electron microscopy, and to evaluate the role of podocalyxin IHC expression as a novel marker for disease activity in lupus nephritis (LN). METHODS: Thirty-two renal biopsies of active lupus nephritis patients were studied...
July 27, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28747404/galectin-8-regulates-targeting-of-gp135-podocalyxin-and-lumen-formation-at-the-apical-surface-of-renal-epithelial-cells
#2
HooiCheng Lim, Chun-Ying Yu, Tzuu-Shuh Jou
Establishment of apical-basal polarity, through correct targeting of polarity determinants to distinct domains of the plasma membrane, is a fundamental process for the development of functioning epithelial tubules. Here we report that galectin (Gal)-8 regulates apical-basal polarity of Madin-Darby canine kidney (MDCK) cells via apical targeting of 135-kDa glycoprotein (Gp135). Gal-8 interacts with newly synthesized Gp135 in a glycan-dependent manner. Gal-8 knockdown induces aberrant lumens at the lateral domain and mistargeting of Gp135 to this structure, thus disrupting the kidney epithelial polarity of MDCK cells, which organize lumens at the apical surface...
July 26, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28665887/serum-podocalyxin-is-significantly-increased-in-early-onset-preeclampsia-and-may-represent-a-novel-marker-of-maternal-endothelial-cell-dysfunction
#3
Qi Chen, Yao Wang, Ying Li, Min Zhao, Guiying Nie
OBJECTIVE: Podocalyxin is a glomerular podocyte protein and increased in urine of preeclampsia. However, podocalyxin is also expressed in endothelial cells of other organs. Here we investigated whether podocalyxin is detectable in pregnant serum and whether the levels are altered in preeclampsia. METHODS: Podocalyxin was determined by ELISA in sera collected from normal pregnancy across gestation (n = 44) and from preeclamptic pregnancies at diagnosis (n = 34) with gestation-age-matched controls (n = 68)...
June 29, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28665782/antipodocalyxin-antibody-chpcmab-47-exerts-antitumor-activity-in-mouse-xenograft-models-of-colorectal-adenocarcinomas
#4
Mika K Kaneko, Akiko Kunita, Shinji Yamada, Takuro Nakamura, Miyuki Yanaka, Noriko Saidoh, Yao-Wen Chang, Saori Handa, Satoshi Ogasawara, Tomokazu Ohishi, Shinji Abe, Shunsuke Itai, Hiroyuki Harada, Manabu Kawada, Yasuhiko Nishioka, Masashi Fukayama, Yukinari Kato
Podocalyxin (PODXL) is expressed in several cancers, including brain tumors and colorectal cancers. PODXL overexpression is an independent predictor of progression, metastasis, and poor outcome. We recently immunized mice with recombinant human PODXL, which was produced using LN229 glioblastoma cells, and produced a clone PcMab-47 that could be used for investigating PODXL expression by flow cytometry and immunohistochemical analysis. Herein, we produced a human-mouse chimeric PcMab-47 (chPcMab-47) and investigated its antitumor activity against PODXL-expressing tumors...
August 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28664547/vitamin-d3-ameliorates-podocyte-injury-through-the-nephrin-signalling-pathway
#5
Ourania Trohatou, Effie-Fotini Tsilibary, Aristidis Charonis, Christos Iatrou, Garyfalia Drossopoulou
Renal podocytes form the main filtration barrier possessing unique phenotype maintained by proteins including podocalyxin and nephrin, which are modulated in pathological conditions. In diabetic nephropathy (DN), podocytes become structurally and functionally compromised. Nephrin, a structural backbone protein of the slit diaphragm, acts as regulator of podocyte intracellular signalling with renoprotective role. Vitamin D3 through its receptor, VDR, provides renal protection in DN but limited data exist about its effect on podocytes...
June 29, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28439668/urinary-podocalyxin-as-a-possible-novel-marker-of-intrauterine-nephrogenesis-and-extrauterine-podocyte-injury
#6
Taihei Hayashi, Shuko Tokuriki, Takashi Okuno, Genrei Ohta, Aiko Igarashi, Yusei Ohshima
BACKGROUND: The number of nephrons at birth is determined during fetal development and is modulated thereafter by postnatal podocyte injury. Hyperfiltration, caused by a reduced number of nephrons, is a risk factor for chronic kidney disease. It is therefore important to monitor the formation of nephrons. METHODS: Urine samples were collected from infants within 1-2 days of birth, with follow-up sampling for preterm infants at 37-39 weeks of corrected age. Urinary levels of podocalyxin (PCX), β2-microglobulin (β2MG), N-acetyl-ß-D-glucosaminidase (NAG), total protein (TP), microalbumin (mAlb) and creatinine were measured and the relationship between these markers evaluated...
April 25, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28408238/novel-roles-for-podocalyxin-in-regulating-stress-myelopoiesis-rap1a-and-neutrophil-migration
#7
Pan Li, Aldona A Karaczyn, Rose McGlauflin, Amanda J Favreau-Lessard, Edward Jachimowicz, Calvin P Vary, Kailin Xu, Don M Wojchowski, Pradeep Sathyanarayana
Podocalyxin (Podxl) is a CD34 orthologue and cell surface sialomucin reported to have roles in renal podocyte diaphragm slit development; vascular cell integrity; and the progression of blood, breast, and prostate cancers. Roles for Podxl during nonmalignant hematopoiesis, however, are largely undefined. We have developed a Vav-Cre Podxl knockout (KO) mouse model, and report on novel roles for Podxl in governing stress myelopoiesis. At steady state, Podxl expression among hematopoietic progenitor cells was low level but was induced by granulocyte colony-stimulating factor (G-CSF) in myeloid progenitors and by thrombopoietin in human stem cells...
June 2017: Experimental Hematology
https://www.readbyqxmd.com/read/28396819/rab11-fip1-phosphorylation-by-mark2-regulates-polarity-in-mdck-cells
#8
Rebecca McRae, Lynne A Lapierre, Elizabeth H Manning, James R Goldenring
MARK2/Par1b/EMK1, a serine/threonine kinase, is required for correct apical/basolateral membrane polarization in epithelial cells. However, the specific substrates mediating MARK2 action are less well understood. We have now found that MARK2 phosphorylates Rab11-FIP1B/C at serine 234 in a consensus site similar to that previously identified in Rab11-FIP2. In MDCK cells undergoing repolarization after a calcium switch, antibodies specific for pS234-Rab11-FIP1 or pS227-Rab11-FIP2 demonstrate that the spatial and temporal activation of Rab11-FIP1 phosphorylation is distinct from that for Rab11-FIP2...
2017: Cellular Logistics
https://www.readbyqxmd.com/read/28384052/pcmab-47-novel-antihuman-podocalyxin-monoclonal-antibody-for-immunohistochemistry
#9
Satoshi Ogasawara, Mika K Kaneko, Shinji Yamada, Ryusuke Honma, Takuro Nakamura, Noriko Saidoh, Miyuki Yanaka, Kanae Yoshida, Yuki Fujii, Yukinari Kato
Podocalyxin (PODXL) is a CD34-related sialomucin and a well-known marker of embryonic stem cells. PODXL is expressed in many types of tumors including colorectal cancers, breast cancers, and brain tumors. Overexpression of PODXL is an independent predictor of progression, metastasis, and poor outcome. PODXL is also expressed in many normal cells such as renal podocytes and endothelial cells (ECs). However, high-sensitive and high-specific anti-PODXL monoclonal antibodies (mAbs) have not been established. Herein, we immunized mice with recombinant human PODXL, which was produced using LN229 glioblastoma cells...
April 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28370666/%C3%AE-5%C3%AE-1-integrin-mediates-pulmonary-epithelial-cyst-formation
#10
Susan K Legan, Daniel D Lee, Margaret A Schwarz
BACKGROUND: Formation of the epithelial cyst involves the establishment of apical-basolateral polarity through a series of cellular interactions that are in part mediated by the extracellular matrix (ECM). We report that in a three-dimensional multi-cellular self-assembly model of lung development, α5 integrin regulates epithelial cyst formation through organization of soluble fibronectin matrix into insoluble fibrils through a process called fibrillogenesis. RESULTS: Dissociated murine embryonic lung cells self-assemble into three-dimensional pulmonary bodies that are dependent on α5β1 integrin mediated fibrillogenesis for cell-cell mediated self-assembly: compaction and epithelial cyst formation...
June 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28329747/influence-of-dipeptidyl-peptidase-iv-inhibitor-sitagliptin-on-extracellular-signal-regulated-kinases-1-2-signaling-in-rats-with-diabetic-nephropathy
#11
Xiaojun Ren, Gaohong Liu, Yanhong Wang, Wan Zhang, Fuping Xue, Rongshan Li, Weimin Yu
The protective effects of sitagliptin on the kidneys of rats with diabetic nephropathy (DN) and its influence on extracellular signal-regulated kinases 1/2 (ERK1/2) signaling were investigated. Male Wistar rats (n = 40) were randomly assigned to normal control, DN, low-dose sitagliptin intervention (ST1), or high-dose sitagliptin intervention (ST2) groups. Animals were euthanized after a 16-week treatment, and blood glucose (BG), glycosylated hemoglobin (HbA1c), urinary albumin excretion rate (AER), serum creatinine (Scr), creatinine clearance rate (Ccr), active glucagon-like peptide-1 (GLP-1) levels, kidney hypertrophy index, and renal pathohistology were determined...
2017: Pharmacology
https://www.readbyqxmd.com/read/28302561/ameliorative-effect-of-gossypin-against-gentamicin-induced-nephrotoxicity-in-rats
#12
Mohamed Katary, Ahmad Salahuddin
AIM: Gentamicin (GEN) is an aminoglycoside antibiotic employed in treatment of life-threatening gram-negative infections, but one of its major side effects is the induction of nephrotoxicity. Therefore, the aim of this work was to scrutinize the possible protective effect of gossypin against GEN-induced nephrotoxicity. METHOD: Rats were randomly divided into four groups. First group served as a control, second group was injected with gossypin (10mg/kg, orally) for 7days, third group was injected with GEN (80mg/kg, i...
May 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28293425/podocalyxin-like-and-rna-binding-motif-protein-3-are-prognostic-biomarkers-in-urothelial-bladder-cancer-a-validatory-study
#13
Karolina Boman, Gustav Andersson, Christoffer Wennersten, Björn Nodin, Göran Ahlgren, Karin Jirström
BACKGROUND: Urothelial bladder cancer (UBC) is a disease that often is discovered when the tumour is non-muscle invasive, i.e. in Ta or T1 stage. Some patients will progress into muscle-invasive disease, a potentially deadly condition. Although there are some prognostic models, the need for prognostic and predictive biomarkers is considerate and urgent. Membranous expression of podocalyxin-like protein 1 (PODXL) and low expression of the RNA-binding motif 3 (RBM3) has previously been shown to be associated with an aggressive tumour phenotype and poor prognosis in several forms of cancer, including UBC...
2017: Biomarker Research
https://www.readbyqxmd.com/read/28161386/podocyturia-parallels-proximal-tubule-dysfunction-in-type-2-diabetes-mellitus-patients-independently-of-albuminuria-and-renal-function-decline-a-cross-sectional-study
#14
Ligia Petrica, Mihaela Vlad, Adrian Vlad, Gheorghe Gluhovschi, Florica Gadalean, Victor Dumitrascu, Roxana Popescu, Cristina Gluhovschi, Petru Matusz, Silvia Velciov, Flaviu Bob, Sorin Ursoniu, Daliborca Vlad
AIMS: Detection of podocytes in the urine of patients with type 2 diabetes may indicate severe injury to the podocytes. In the course of type 2 diabetes the proximal tubule is involved in urinary albumin processing. We studied the significance of podocyturia in relation with proximal tubule dysfunction in type 2 diabetes. METHODS: A total of 86 patients with type 2 diabetes (34-normoalbuminuria; 30-microalbuminuria; 22-macroalbuminuria) and 28 healthy subjects were enrolled in the study and assessed concerning urinary podocytes, podocyte-associated molecules, and biomarkers of proximal tubule dysfunction...
January 20, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28078490/podocalyxin-as-a-major-pluripotent-marker-and-novel-keratan-sulfate-proteoglycan-in-human-embryonic-and-induced-pluripotent-stem-cells
#15
REVIEW
Hidenao Toyoda, Yuko Nagai, Aya Kojima, Akiko Kinoshita-Toyoda
Podocalyxin (PC) was first identified as a heavily sialylated transmembrane protein of glomerular podocytes. Recent studies suggest that PC is a remarkable glycoconjugate that acts as a universal glyco-carrier. The glycoforms of PC are responsible for multiple functions in normal tissue, human cancer cells, human embryonic stem cells (hESCs), and human induced pluripotent stem cells (hiPSCs). PC is employed as a major pluripotent marker of hESCs and hiPSCs. Among the general antibodies for human PC, TRA-1-60 and TRA-1-81 recognize the keratan sulfate (KS)-related structures...
January 11, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/28039469/prognostic-role-of-podocalyxin-like-protein-expression-in-various-cancers-a-systematic-review-and-meta-analysis
#16
Jing Wang, Yongzhao Zhao, Ruizhao Qi, Xiaoning Zhu, Chenshen Huang, Sijin Cheng, Shengzhi Wang, Xiaolong Qi
Several studies were conducted to explore the prognostic significance of podocalyxin-like protein (PODXL) expression in various cancers, with contradictory. This study aims to summarize the prognostic significance of PODXL expression in cancers. PubMed, the Cochrane Library and Embase were completely retrieved. The prospective or retrospective studies focusing on the prognostic role of PODXL expression in cancers were eligible. The endpoints were overall survival (OS), disease-specific survival (DSS) and disease-free survival (DFS)...
December 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/28004467/podocalyxin-influences-malignant-potential-by-controlling-epithelial-mesenchymal-transition-in-lung-adenocarcinoma
#17
Hidenori Kusumoto, Yasushi Shintani, Ryu Kanzaki, Tomohiro Kawamura, Soichiro Funaki, Masato Minami, Izumi Nagatomo, Eiichi Morii, Meinoshin Okumura
Epithelial-mesenchymal transition (EMT) plays an important role in the progression of lung carcinoma. Podocalyxin (PODXL), which belongs to the CD34 family and regulates cell morphology, has been linked to EMT in lung cancer, and PODXL overexpression is associated with poor prognosis in several different classes of cancers. The aim of this study was to clarify the role of PODXL overexpression in EMT in lung cancer, and to determine the prognostic value of PODXL overexpression in tumors from lung cancer patients...
March 2017: Cancer Science
https://www.readbyqxmd.com/read/27960539/c-x-c-chemokine-receptor-type-4-plays-a-crucial-role-in-mediating-oxidative-stress-induced-podocyte-injury
#18
Hongyan Mo, Qinyu Wu, Jinhua Miao, Congwei Luo, Xue Hong, Yongping Wang, Lan Tang, Fan Fan Hou, Youhua Liu, Lili Zhou
AIMS: Oxidative stress plays a role in mediating podocyte injury and proteinuria. However, the underlying mechanism remains poorly understood. In this study, we investigated the potential role of C-X-C chemokine receptor type 4 (CXCR4), the receptor for stromal cell-derived factor 1α (SDF-1α), in mediating oxidative stress-induced podocyte injury. RESULTS: In mouse model of adriamycin nephropathy (ADR), CXCR4 expression was significantly induced in podocytes as early as 3 days...
August 20, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27668430/urinary-podocalyxin-as-a-biomarker-to-diagnose-membranous-nephropathy
#19
Takahiro Imaizumi, Masahiro Nakatochi, Shin'ichi Akiyama, Makoto Yamaguchi, Hiroyuki Kurosawa, Yoshiaki Hirayama, Takayuki Katsuno, Naotake Tsuboi, Masanori Hara, Shoichi Maruyama
BACKGROUND: A non-invasive diagnostic marker of membranous nephropathy (MN) is desirable. The urinary level of podocalyxin (PCX) is higher in various glomerular diseases, including MN. The aim of this study was to construct a diagnostic model of MN with the combination of urinary PCX and clinical parameters. METHODS: We performed this cross-sectional study to construct the diagnostic models for MN by using data and samples from the multicenter kidney biopsy registry of Nagoya University and its affiliated hospitals...
2016: PloS One
https://www.readbyqxmd.com/read/27649479/newly-synthesized-and-recycling-pools-of-the-apical-protein-gp135-do-not-occupy-the-same-compartments
#20
Emily H Stoops, Michael Hull, Michael J Caplan
Polarized epithelial cells sort newly synthesized and recycling plasma membrane proteins into distinct trafficking pathways directed to either the apical or basolateral membrane domains. While the trans-Golgi network is a well-established site of protein sorting, increasing evidence indicates a key role for endosomes in the initial trafficking of newly synthesized proteins. Both basolateral and apical proteins have been shown to traverse endosomes en route to the plasma membrane. In particular, apical proteins traffic through either subapical early or recycling endosomes...
December 2016: Traffic
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