Date published: 2025-10-14

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claudin-5 Antibody (A-12): sc-374221

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Datasheets
  • claudin-5 Antibody (A-12) is a mouse monoclonal IgG1 κ claudin-5 antibody, cited in 30 publications, provided at 200 µg/ml
  • raised against amino acids 167-218 mapping at the C-terminus of claudin-5 of human origin
  • claudin-5 Antibody (A-12) is recommended for detection of claudin-5 of human origin by WB, IP, IF and ELISA
  • Anti-claudin-5 Antibody (A-12) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • m-IgG Fc BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for claudin-5 Antibody (A-12) for WB applications. These reagents are now offered in bundles with claudin-5 Antibody (A-12) (see ordering information below).

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claudin-5 Antibody (A-12) is a mouse monoclonal IgG1 kappa light chain antibody that specifically detects claudin-5, also known as CLDN5, a critical component of tight junctions in endothelial and epithelial cells. Raised against amino acids 167-218 at the C-terminus of human claudin-5, anti-claudin-5 antibody (A-12) is reactive with human proteins in applications such as western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), and enzyme-linked immunosorbent assay (ELISA). Claudin-5 plays a vital role in maintaining the integrity of the blood-brain barrier and regulating vascular permeability, making claudin-5 essential for normal physiological functions and a key target in neurological research. The claudin family consists of structurally related proteins important for paracellular transport and tight junction formation, with claudin-5 being abundantly expressed in adult lung, heart, and skeletal muscle tissues. Alterations in claudin-5 expression have been implicated in various diseases, including velocardiofacial syndrome, also known as 22q11.2 deletion syndrome, which is characterized by cleft palate, facial dysmorphology, and heart defects. Available in both non-conjugated and multiple conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and various Alexa Fluor® conjugates, claudin-5 (A-12) monoclonal antibody provides flexibility for diverse experimental needs. By targeting claudin-5, claudin-5 (A-12) antibody aids in the study of tight junction dynamics and their implications in health and disease, contributing to a better understanding of conditions like stroke, epilepsy, and neurodegenerative disorders.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

claudin-5 Antibody (A-12) References:

  1. Transmembrane proteins in the tight junction barrier.  |  Fanning, AS., et al. 1999. J Am Soc Nephrol. 10: 1337-45. PMID: 10361874
  2. Clostridium perfringens enterotoxin binds to the second extracellular loop of claudin-3, a tight junction integral membrane protein.  |  Fujita, K., et al. 2000. FEBS Lett. 476: 258-61. PMID: 10913624
  3. Heterogeneity in expression and subcellular localization of claudins 2, 3, 4, and 5 in the rat liver, pancreas, and gut.  |  Rahner, C., et al. 2001. Gastroenterology. 120: 411-22. PMID: 11159882
  4. The roles of claudin superfamily proteins in paracellular transport.  |  Heiskala, M., et al. 2001. Traffic. 2: 93-8. PMID: 11247307
  5. Interleukin-2 receptor beta subunit-dependent and -independent regulation of intestinal epithelial tight junctions.  |  Nishiyama, R., et al. 2001. J Biol Chem. 276: 35571-80. PMID: 11466322
  6. Claudin-5: gatekeeper of neurological function.  |  Greene, C., et al. 2019. Fluids Barriers CNS. 16: 3. PMID: 30691500
  7. JAM-A Acts via C/EBP-α to Promote Claudin-5 Expression and Enhance Endothelial Barrier Function.  |  Kakogiannos, N., et al. 2020. Circ Res. 127: 1056-1073. PMID: 32673519
  8. Autophagy alleviates hypoxia-induced blood-brain barrier injury via regulation of CLDN5 (claudin 5).  |  Yang, Z., et al. 2021. Autophagy. 17: 3048-3067. PMID: 33280500
  9. Serum claudin-5, claudin-11, occludin, vinculin, paxillin, and beta-catenin levels in preschool children with autism spectrum disorder.  |  Bilgiç, A., et al. 2023. Nord J Psychiatry. 77: 506-511. PMID: 36662163
  10. Comparative study of extracellular vesicles derived from mesenchymal stem cells and brain endothelial cells attenuating blood-brain barrier permeability via regulating Caveolin-1-dependent ZO-1 and Claudin-5 endocytosis in acute ischemic stroke.  |  Li, Y., et al. 2023. J Nanobiotechnology. 21: 70. PMID: 36855156
  11. Disheveled-1 Interacts with Claudin-5 and Contributes to Norrin-Induced Endothelial Barrier Restoration.  |  Díaz-Coránguez, M., et al. 2023. Cells. 12: PMID: 37830616
  12. Blood-brain barrier dysfunction mediated by the EZH2-Claudin-5 axis drives stress-induced TNF-α infiltration and depression-like behaviors.  |  Sun, ZW., et al. 2024. Brain Behav Immun. 115: 143-156. PMID: 37848095

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

claudin-5 Antibody (A-12)

sc-374221
200 µg/ml
$316.00

claudin-5 Antibody (A-12): m-IgG Fc BP-HRP Bundle

sc-529691
200 µg Ab; 10 µg BP
$354.00

claudin-5 Antibody (A-12): m-IgGκ BP-HRP Bundle

sc-522664
200 µg Ab, 40 µg BP
$354.00

claudin-5 Antibody (A-12) AC

sc-374221 AC
500 µg/ml, 25% agarose
$416.00

claudin-5 Antibody (A-12) HRP

sc-374221 HRP
200 µg/ml
$316.00

claudin-5 Antibody (A-12) FITC

sc-374221 FITC
200 µg/ml
$330.00

claudin-5 Antibody (A-12) PE

sc-374221 PE
200 µg/ml
$343.00

claudin-5 Antibody (A-12) Alexa Fluor® 488

sc-374221 AF488
200 µg/ml
$357.00

claudin-5 Antibody (A-12) Alexa Fluor® 546

sc-374221 AF546
200 µg/ml
$357.00

claudin-5 Antibody (A-12) Alexa Fluor® 594

sc-374221 AF594
200 µg/ml
$357.00

claudin-5 Antibody (A-12) Alexa Fluor® 647

sc-374221 AF647
200 µg/ml
$357.00

claudin-5 Antibody (A-12) Alexa Fluor® 680

sc-374221 AF680
200 µg/ml
$357.00

claudin-5 Antibody (A-12) Alexa Fluor® 790

sc-374221 AF790
200 µg/ml
$357.00

Hi! Using your antibody for WB in HUVEC extracts isn't working very well... I'm using a dilution of 1:500... And I'm incubating the Ab with the membrane for 48 hours. What can I do in roder to see the clear band?

Asked by: Fawkes
Thank you for your question. We are sorry to hear that this antibody did not perform for you as expected. We want you to be successful in your research. Please reach out to your local distributor in Mexico or contact Technical Service directly. We are happy to help you optimize and troubleshoot the antibody to make sure you have success with the antibody.
Answered by: Technical Support
Date published: 2018-12-11

does the claudin-5 antibody can be used in formalin fixed paraffin embedded brain tissue?

Asked by: neurozw
Thank you for your question. We have not validated this claudin-5 antibody sc-374221 for use with formalin fixed, paraffin-embedded tissue sections. Please contact Technical Service by phone, (800)-457-3801 option 2, email <scbt@scbt.com>, or by live chat directly on our website, www.scbt.com if you have any further questions.
Answered by: Technical Service
Date published: 2017-08-29

I am using the LiCor/Odyssey system. Which secondary antibody do you recommend using with claudin-5 (A-12): sc-374221 monoclonal antibody?

Asked by: jenni
Thank you for your question We recommend using one of our our exclusive Mouse IgG Binding Proteins (m-IgGκ) conjugated to CFL 680 or CFL 790. They are suitable for use with Near-Infrared (NIR) detection systems, such as LI-COR/Odyssey and other comparable systems. A complete list of available binding proteins is available on our website here: https://www.scbt.com/scbt/browse/support-products-mouse-igg-binding-proteins/_/N-ecrety
Answered by: Santa Cruz TS
Date published: 2017-01-30
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Rated 1 out of 5 by from 浓度有影响一抗稀释1:500-1:1000浓度范围内,WB条带结果一片空白,无任何条带的痕迹;所用marker均完全转移至PVDF膜上且转膜后用丽春红染色,可见明显泳道及蛋白;
Date published: 2022-03-03
Rated 5 out of 5 by from work for wbgot the sample one months ago, and diluted in 1:1000,the band is clean and clear
Date published: 2018-01-18
Rated 4 out of 5 by from Works for WBI got a sample of this antibody earlier and tried it on WB (1:1000). It works alright and the band is clear.
Date published: 2017-10-30
Rated 4 out of 5 by from Great featuresI get it about a month ago, and run recently. The bands were clear, but not only one as showed, I have to pick one at 23kDa for representative.
Date published: 2017-10-30
Rated 5 out of 5 by from Beautiful bandsI have bought this claudin-5 andibody two months ago. It showed high quality band in a low dilution range, very good product, hopes keeping well in the future!!!
Date published: 2017-09-26
Rated 5 out of 5 by from Great!It is perfect in western blotting for human endothelial cell line/ D3 and Rat endothelial cell (RBE4), but not in IF staining.
Date published: 2017-09-21
Rated 3 out of 5 by from Not bad.claudin-5 (A-12): sc-374221. Immunofluorescence staining of PFA-fixed JEG-3 cells showing very weak staining but should be specific. Diluted 1:50. Probably the concentration is still not enough.
Date published: 2017-09-21
Rated 5 out of 5 by from specific/sharp bands detectedThis antibody was tested on human aortic endothelial cells post various treatments. It gives specific band with no background.
Date published: 2017-09-14
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claudin-5 Antibody (A-12) is rated 4.4 out of 5 by 14.
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