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company name :
Invitrogen
other brands :
NeoMarkers, Lab Vision, Endogen, Pierce, BioSource International, Zymed Laboratories, Caltag, Molecular Probes, Research Genetics, Life Technologies, Applied Biosystems, GIBCO BRL, ABgene, Dynal, Affinity BioReagents, Nunc, Invitrogen, NatuTec, Oxoid, Richard-Allan Scientific, Arcturus, Perseptive Biosystems, Proxeon, eBioscience
product type :
antibody
product name :
Claudin 2 Polyclonal Antibody (MH44)
catalog :
51-6100
quantity :
100 µg
price :
US 446
clonality :
polyclonal
host :
domestic rabbit
conjugate :
nonconjugated
clone name :
MH44
reactivity :
human, mouse, rat, dogs, domestic horse
application :
western blot, ELISA, immunohistochemistry, immunocytochemistry, flow cytometry, immunohistochemistry - paraffin section, immunohistochemistry - frozen section
more info or order :
citations: 54
Published Application/Species/Sample/DilutionReference
  • immunohistochemistry - frozen section; mouse; 1:125; loading ...; fig 4d
  • western blot; mouse; 1:1000; loading ...; fig 4a
Marincola Smith P, Choksi Y, Markham N, Hanna D, Zi J, Weaver C, et al. Colon epithelial cell TGFβ signaling modulates the expression of tight junction proteins and barrier function in mice. Am J Physiol Gastrointest Liver Physiol. 2021;320:G936-G957 pubmed publisher
  • immunohistochemistry - paraffin section; mouse; 1:200; loading ...; fig 6a
  • western blot; mouse; 1:500; loading ...; fig 6b
Cox C, Lu R, Salcin K, Wilson J. The Endosomal Protein Endotubin Is Required for Enterocyte Differentiation. Cell Mol Gastroenterol Hepatol. 2018;5:145-156 pubmed publisher
  • immunocytochemistry; human; 1:100; loading ...; fig 2d
Samuel W, Jaworski C, Postnikova O, Kutty R, Duncan T, Tan L, et al. Appropriately differentiated ARPE-19 cells regain phenotype and gene expression profiles similar to those of native RPE cells. Mol Vis. 2017;23:60-89 pubmed
  • immunocytochemistry; human; loading ...; fig 5b
  • western blot; human; loading ...; fig 5a
Zhang C, Yan J, Xiao Y, Shen Y, Wang J, Ge W, et al. Inhibition of Autophagic Degradation Process Contributes to Claudin-2 Expression Increase and Epithelial Tight Junction Dysfunction in TNF-α Treated Cell Monolayers. Int J Mol Sci. 2017;18: pubmed publisher
  • flow cytometry; human; 1:200; loading ...; fig 3a
Torres Martínez A, Gallardo Vera J, Lara Holguin A, Montano L, Rendón Huerta E. Claudin-6 enhances cell invasiveness through claudin-1 in AGS human adenocarcinoma gastric cancer cells. Exp Cell Res. 2017;350:226-235 pubmed publisher
  • western blot; mouse; 1:500; loading ...; fig 2b
Lepage D, Bélanger É, Jones C, Tremblay S, Allaire J, Bruneau J, et al. Gata4 is critical to maintain gut barrier function and mucosal integrity following epithelial injury. Sci Rep. 2016;6:36776 pubmed publisher
  • immunocytochemistry; dogs; loading ...; fig 7a
  • western blot; dogs; loading ...; fig 1b
  • western blot; human; fig 1a
Fujii N, Matsuo Y, Matsunaga T, Endo S, Sakai H, Yamaguchi M, et al. Hypotonic Stress-induced Down-regulation of Claudin-1 and -2 Mediated by Dephosphorylation and Clathrin-dependent Endocytosis in Renal Tubular Epithelial Cells. J Biol Chem. 2016;291:24787-24799 pubmed
  • western blot; dogs; 1:1000
Ronaghan N, Shang J, Iablokov V, Zaheer R, Colarusso P, Dion S, et al. The serine protease-mediated increase in intestinal epithelial barrier function is dependent on occludin and requires an intact tight junction. Am J Physiol Gastrointest Liver Physiol. 2016;311:G466-79 pubmed publisher
  • immunocytochemistry; human; fig 5
  • western blot; human; fig 7
Maria O, Liu Y, El Hakim M, Zeitouni A, Tran S. The role of human fibronectin- or placenta basement membrane extract-based gels in favouring the formation of polarized salivary acinar-like structures. J Tissue Eng Regen Med. 2017;11:2643-2657 pubmed publisher
  • immunohistochemistry - paraffin section; domestic horse; fig 3
  • western blot; domestic horse; 1:1000; fig 1
Lee B, Kang H, Lee D, Ahn C, Jeung E. Claudin-1, -2, -4, and -5: comparison of expression levels and distribution in equine tissues. J Vet Sci. 2016;17:445-451 pubmed publisher
  • immunocytochemistry; mouse; fig 3
Strazielle N, Creidy R, Malcus C, Boucraut J, Ghersi Egea J. T-Lymphocytes Traffic into the Brain across the Blood-CSF Barrier: Evidence Using a Reconstituted Choroid Plexus Epithelium. PLoS ONE. 2016;11:e0150945 pubmed publisher
  • immunocytochemistry; mouse; 10 ug/ml; fig 2
Lazarevic I, Engelhardt B. Modeling immune functions of the mouse blood-cerebrospinal fluid barrier in vitro: primary rather than immortalized mouse choroid plexus epithelial cells are suited to study immune cell migration across this brain barrier. Fluids Barriers CNS. 2016;13:2 pubmed publisher
  • western blot; human; fig 2
Phillips S, Soderblom E, Bradrick S, Garcia Blanco M. Identification of Proteins Bound to Dengue Viral RNA In Vivo Reveals New Host Proteins Important for Virus Replication. MBio. 2016;7:e01865-15 pubmed publisher
Higashi T, Stephenson R, Schwayer C, Huljev K, Higashi A, Heisenberg C, et al. Zinc-based Ultrasensitive Microscopic Barrier Assay (ZnUMBA): a live imaging method to detect local barrier breaches. J Cell Sci. 2023;: pubmed publisher
Lonati E, Sala G, Corbetta P, Pagliari S, Cazzaniga E, Botto L, et al. Digested Cinnamon (Cinnamomum verum J. Presl) Bark Extract Modulates Claudin-2 Gene Expression and Protein Levels under TNFα/IL-1β Inflammatory Stimulus. Int J Mol Sci. 2023;24: pubmed publisher
Wittner L, Wagener L, Wiese J, Stolzer I, Krug S, Naschberger E, et al. Proteolytic Activity of the Paracaspase MALT1 Is Involved in Epithelial Restitution and Mucosal Healing. Int J Mol Sci. 2023;24: pubmed publisher
Mukherji S, Brambilla L, Stuart K, Mayes I, Kutz L, Chen Y, et al. Na/K-ATPase signaling tonically inhibits sodium reabsorption in the renal proximal tubule. FASEB J. 2023;37:e22835 pubmed publisher
Awad K, Barmeyer C, Bojarski C, Nagel O, Lee I, Schweiger M, et al. Impaired Intestinal Permeability of Tricellular Tight Junctions in Patients with Irritable Bowel Syndrome with Mixed Bowel Habits (IBS-M). Cells. 2023;12: pubmed publisher
Higashi T, Saito A, Fukazawa Y, Furuse M, Higashi A, Ono M, et al. EpCAM proteolysis and release of complexed claudin-7 repair and maintain the tight junction barrier. J Cell Biol. 2023;222: pubmed publisher
Pan M, Barua N, Ip M. Mucin-degrading gut commensals isolated from healthy faecal donor suppress intestinal epithelial inflammation and regulate tight junction barrier function. Front Immunol. 2022;13:1021094 pubmed publisher
Gonschior H, Schmied C, Van der Veen R, Eichhorst J, Himmerkus N, Piontek J, et al. Nanoscale segregation of channel and barrier claudins enables paracellular ion flux. Nat Commun. 2022;13:4985 pubmed publisher
Koumangoye R, Penny P, Delpire E. Loss of NKCC1 function increases epithelial tight junction permeability by upregulating claudin-2 expression. Am J Physiol Cell Physiol. 2022;323:C1251-C1263 pubmed publisher
Scalavino V, Piccinno E, Bianco G, Schena N, Armentano R, Giannelli G, et al. The Increase of miR-195-5p Reduces Intestinal Permeability in Ulcerative Colitis, Modulating Tight Junctions' Expression. Int J Mol Sci. 2022;23: pubmed publisher
Wei xdf F, Czichos C, Knobe L, Voges L, Bojarski C, Michel G, et al. MarvelD3 Is Upregulated in Ulcerative Colitis and Has Attenuating Effects during Colitis Indirectly Stabilizing the Intestinal Barrier. Cells. 2022;11: pubmed publisher
Scalavino V, Piccinno E, Lacalamita A, Tafaro A, Armentano R, Giannelli G, et al. miR-195-5p Regulates Tight Junctions Expression via Claudin-2 Downregulation in Ulcerative Colitis. Biomedicines. 2022;10: pubmed publisher
Reyes Nicolás V, Allaire J, Alfonso A, Pupo Gómez D, Pomerleau V, Giroux V, et al. Altered Mucus Barrier Integrity and Increased Susceptibility to Colitis in Mice upon Loss of Telocyte Bone Morphogenetic Protein Signalling. Cells. 2021;10: pubmed publisher
Beggs M, Young K, Pan W, O Neill D, Saurette M, Plain A, et al. Claudin-2 and claudin-12 form independent, complementary pores required to maintain calcium homeostasis. Proc Natl Acad Sci U S A. 2021;118: pubmed publisher
Ito A, Nasako H, Akizuki R, Takashina Y, Eguchi H, Matsunaga T, et al. Elevation of Chemosensitivity of Lung Adenocarcinoma A549 Spheroid Cells by Claudin-2 Knockdown through Activation of Glucose Transport and Inhibition of Nrf2 Signal. Int J Mol Sci. 2021;22: pubmed publisher
Muntjewerff E, Tang K, Lutter L, Christoffersson G, Nicolasen M, Gao H, et al. Chromogranin A regulates gut permeability via the antagonistic actions of its proteolytic peptides. Acta Physiol (Oxf). 2021;232:e13655 pubmed publisher
Eguchi H, Matsunaga H, Onuma S, Yoshino Y, Matsunaga T, Ikari A. Down-Regulation of Claudin-2 Expression by Cyanidin-3-Glucoside Enhances Sensitivity to Anticancer Drugs in the Spheroid of Human Lung Adenocarcinoma A549 Cells. Int J Mol Sci. 2021;22: pubmed publisher
Cray P, Sheahan B, Cortes J, Dekaney C. Doxorubicin increases permeability of murine small intestinal epithelium and cultured T84 monolayers. Sci Rep. 2020;10:21486 pubmed publisher
Hachimi M, Grabowski C, Campanario S, Herranz G, Baonza G, Serrador J, et al. Smoothelin-like 2 Inhibits Coronin-1B to Stabilize the Apical Actin Cortex during Epithelial Morphogenesis. Curr Biol. 2020;: pubmed publisher
Uc P, Miranda J, Raya Sandino A, Alarcón L, Roldán M, Ocadiz Delgado R, et al. E7 oncoprotein from human papillomavirus 16 alters claudins expression and the sealing of epithelial tight junctions. Int J Oncol. 2020;57:905-924 pubmed publisher
Wang H, Jiang Y, Li H, Wang J, Li C, Zhang D. Carbachol protects the intestinal barrier in severe acute pancreatitis by regulating Cdc42/F-actin cytoskeleton. Exp Ther Med. 2020;20:2828-2837 pubmed publisher
Casselbrant A, F ndriks L, Wallenius V. Glycocholic acid and butyrate synergistically increase vitamin D-induced calcium uptake in Caco-2 intestinal epithelial cell monolayers. Bone Rep. 2020;13:100294 pubmed publisher
Raju P, Shashikanth N, Tsai P, Pongkorpsakol P, Chánez Paredes S, Steinhagen P, et al. Inactivation of paracellular cation-selective claudin-2 channels attenuates immune-mediated experimental colitis in mice. J Clin Invest. 2020;130:5197-5208 pubmed publisher
Lee J, Kim N, Choi Y, Park J, Ashktorab H, Smoot D, et al. Expression of Tight Junction Proteins According to Functional Dyspepsia Subtype and Sex. J Neurogastroenterol Motil. 2020;26:248-258 pubmed publisher
Kjærgaard S, Damm M, Chang J, Riis L, Rasmussen H, Hytting Andreasen R, et al. Altered Structural Expression and Enzymatic Activity Parameters in Quiescent Ulcerative Colitis: Are These Potential Normalization Criteria?. Int J Mol Sci. 2020;21: pubmed publisher
Flores Maldonado C, Albino S xe1 nchez M, Rodr xed guez Callejas J, Estrada Mondragón A, Le xf3 n Galicia I, Maqueda Alfaro R, et al. A Low Cost Antibody Signal Enhancer Improves Immunolabeling in Cell Culture, Primate Brain and Human Cancer Biopsy. Neuroscience. 2020;439:275-286 pubmed publisher
Gamero Estévez E, Andonian S, Jean Claude B, Gupta I, Ryan A. Temporal Effects of Quercetin on Tight Junction Barrier Properties and Claudin Expression and Localization in MDCK II Cells. Int J Mol Sci. 2019;20: pubmed publisher
Miranda J, Martín Tapia D, Valdespino Vazquez Y, Alarcón L, Espejel Nuñez A, Guzmán Huerta M, et al. Syncytiotrophoblast of Placentae from Women with Zika Virus Infection Has Altered Tight Junction Protein Expression and Increased Paracellular Permeability. Cells. 2019;8: pubmed publisher
Luo Y, Xu J, Zhang C, Jiang C, Ma Y, He H, et al. Toll-like receptor 5-mediated IL-17C expression in intestinal epithelial cells enhances epithelial host defense against F4+ ETEC infection. Vet Res. 2019;50:48 pubmed publisher
Kumar R, Gong H, Liu L, Ramos Solis N, Seye C, Derbigny W. TLR3 deficiency exacerbates the loss of epithelial barrier function during genital tract Chlamydia muridarum infection. PLoS ONE. 2019;14:e0207422 pubmed publisher
Schlegel C, Weis V, Knowles B, Lapierre L, Martin M, Dickman P, et al. Apical Membrane Alterations in Non-intestinal Organs in Microvillus Inclusion Disease. Dig Dis Sci. 2018;63:356-365 pubmed publisher
Buzza M, Johnson T, Conway G, Martin E, Mukhopadhyay S, Shea Donohue T, et al. Inflammatory cytokines down-regulate the barrier-protective prostasin-matriptase proteolytic cascade early in experimental colitis. J Biol Chem. 2017;292:10801-10812 pubmed publisher
Nighot P, Leung L, Ma T. Chloride channel ClC- 2 enhances intestinal epithelial tight junction barrier function via regulation of caveolin-1 and caveolar trafficking of occludin. Exp Cell Res. 2017;352:113-122 pubmed publisher
Hichino A, Okamoto M, Taga S, Akizuki R, Endo S, Matsunaga T, et al. Down-regulation of Claudin-2 Expression and Proliferation by Epigenetic Inhibitors in Human Lung Adenocarcinoma A549 Cells. J Biol Chem. 2017;292:2411-2421 pubmed publisher
Randall K, Henderson N, Reens J, Eckersley S, Nyström A, South M, et al. Claudin-2 Expression Levels in Ulcerative Colitis: Development and Validation of an In-Situ Hybridisation Assay for Therapeutic Studies. PLoS ONE. 2016;11:e0162076 pubmed publisher
Maggiorani D, Dissard R, Belloy M, Saulnier Blache J, Casemayou A, Ducassé L, et al. Shear Stress-Induced Alteration of Epithelial Organization in Human Renal Tubular Cells. PLoS ONE. 2015;10:e0131416 pubmed publisher
Amoozadeh Y, Dan Q, Xiao J, Waheed F, Szászi K. Tumor necrosis factor-α induces a biphasic change in claudin-2 expression in tubular epithelial cells: role in barrier functions. Am J Physiol Cell Physiol. 2015;309:C38-50 pubmed publisher
Staat C, Coisne C, Dabrowski S, Stamatovic S, Andjelkovic A, Wolburg H, et al. Mode of action of claudin peptidomimetics in the transient opening of cellular tight junction barriers. Biomaterials. 2015;54:9-20 pubmed publisher
Casselbrant A, Elias E, Fändriks L, Wallenius V. Expression of tight-junction proteins in human proximal small intestinal mucosa before and after Roux-en-Y gastric bypass surgery. Surg Obes Relat Dis. 2015;11:45-53 pubmed publisher
García Hernández V, Flores Maldonado C, Rincon Heredia R, Verdejo Torres O, Bonilla Delgado J, Meneses Morales I, et al. EGF regulates claudin-2 and -4 expression through Src and STAT3 in MDCK cells. J Cell Physiol. 2015;230:105-15 pubmed publisher
Retana C, Sanchez E, Perez Lopez A, Cruz A, Lagunas J, Cruz C, et al. Alterations of intercellular junctions in peritoneal mesothelial cells from patients undergoing dialysis: effect of retinoic Acid. Perit Dial Int. 2015;35:275-87 pubmed publisher
product information
Product Type :
Antibody
Product Name :
Claudin 2 Polyclonal Antibody (MH44)
Catalog # :
51-6100
Quantity :
100 µg
Price :
US 446
Clonality :
Polyclonal
Purity :
Antigen affinity chromatography
Host :
Rabbit
Reactivity :
Canine, Human, Rat
Applications :
ELISA: 0.1-1.0 µg/mL, Immunocytochemistry: 1:100, Immunohistochemistry: Assay-dependent, Western Blot: 0.25 - 2 µg/mL
Species :
Canine, Human, Rat
Clone :
MH44
Isotype :
IgG
Storage :
-20°C
Description :
Tight junctions are specialized regions of cell-cell contact that are particularly abundant in luminal epithelial cell sheets. In freeze-fracture electron micrographs, tight junctions are visualized as belt-like bands of anastomosing sealing strands (TJ strands) that completely encircle the lateral surfaces of each cell. TJ strands on adjacent cells are presumed to interact with each other to form a sort of "molecular gasket" that prevents ions, water and other molecules from leaking between cells and thus, from one side of the sheet to the other. In addition to this so-called "barrier" function, the "fence" function of tight junctions plays an important role in maintaining epithelial cell-polarity by blocking the diffusion of membrane proteins between apical (luminal) and basolateral cell surfaces. Confinement of, for example, the glucose symport to apical surfaces allows glucose to be transported vectorially from the lumen, through the cell, and into the bloodstream. Several peripheral membrane proteins are associated with tight junctions including ZO-1, ZO-2, ZO-3 (members of membrane-associated guanylate-kinase family), cingulin, the 7H6 antigen, Rab-3b, symplekin. While their precise functions are not known, roles for these proteins have been suggested in tight junction assembly and maintenance; signal transduction; and the regulation of tight junction permeability. Furthermore, a growing body of evidence suggests that actin filaments play a major role in regulating tight junction permeability. Until recently, the only transmembrane protein known to be associated with tight junctions was occludin, an ~65 kDa protein with four transmembrane domains. Despite widespread expectation, a critical structural role for occludin in TJ strands was ruled out by the observation of apparently normal tight junctions formed between cells disrupted at both occludin alleles. Fortunately, a closer examination of isolated tight junctions uncovered two related ~22 kDa, four-transmembrane domain proteins, claudin-1 and claudin-2, with no similarity to occludin. In contrast to occludin, which induces only a small number of short strands at cell-cell contact sites when introduced into fibroblasts lacking tight junctions, claudin-1 and -2 induce networks of strands characteristic of true tight junctions. Though inconclusive, these findings suggest that claudin-1 and -2 are major structural components of TJ strands and that occludin plays some other accessory role. Excitement in the tight junction field continues to rise following the recent discovery of claudins -3, -4, -5, -6, -7, and -8 and experiments suggesting that tight junctions in different tissues are comprised of different sets of claudin family proteins. Claudin-1 and claudin-2 connect to the actin cytoskeleton through ZO-1; Claudin-2 functions as a paracellular channel with cation (Na+) selectivity at tight junctions. The expression of claudin-2 is restricted to the liver and kidney, with small amounts also found in the brain.
Immunogen :
Synthetic peptide derived from the C-terminus of the human Claudin-2 protein
Format :
Liquid
Applications w/Dilutions :
ELISA: 0.1-1.0 µg/mL, Immunocytochemistry: 1:100, Immunohistochemistry: Assay-dependent, Western Blot: 0.25 - 2 µg/mL
Aliases :
AL022813; claudin 2; Claudin2; claudin-2; CLD2; Cldn2; integral membrane protein claudin-2; PSEC0059; RGD1560247; SP82; UNQ705/PRO1356
more info or order :
company information
Invitrogen
Thermo Fisher Scientific
81 Wyman Street
Waltham, MA USA 02451
https://www.thermofisher.com
800-678-5599
headquarters: USA