Cathepsin S Antibody (YA1614)
(Synonyms: CTSS; Cathepsin S; Cat-s; CATS)
Based on 1 Customer Validation
Cathepsin S Antibody (YA1614) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to Cathepsin S.
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Host:
Rabbit
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Isotype:
IgG
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Application:
WB, IHC-P, ICC/IF
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Reactivity :
Human
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Formulation:
Supplied in rabbit IgG in 50mM Tris-Glycine(pH 7.4), 0.15M NaCl, 40%Glycerol, 0.01% sodium azide and 0.05% BSA.
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Conjugation:
Non-conjugated
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
Applications
| Application |
WB
WB: Western Blot
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IHC-P
IHC-P: Immunohistochemistry-Paraffin
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ICC/IF
ICC/IF: Immunocytochemistry/
Immunofluorescence |
|---|---|---|---|
| Dilution Ratio | 1:500-1:1000 | 1:50-1:100 | 1:50-1:200 |
Product Details
Cathepsin S Antibody (YA1614) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to Cathepsin S.
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Host Rabbit
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Clonality Recombinant,Monoclonal
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Species ReactivityHuman
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Observed Molecular WeightObserved band size: 25 kDa
Note: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.
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Calculated Molecular Weight Predicted band size: 37 kDa
A synthesized peptide derived from human Cathepsin S aa301-331.
Endogenous
Affinity Chromatography
Non-conjugated
Unmodified
IgG
Product Properties
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Appearance
Solution
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Formulation
Supplied in rabbit IgG in 50mM Tris-Glycine(pH 7.4), 0.15M NaCl, 40%Glycerol, 0.01% sodium azide and 0.05% BSA.
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Concentration
Batch-dependent, Please check the COA for the concentration of each lot. Check Lot Concentration
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Storage & Stability
Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.
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Shipping
Shipping with blue ice.
Verification Images
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Western blot analysis of extracts from HeLa(lane 2(20μg), U87(lane 3(20μg), THP-1(lane 4(20μg), MCF-7(lane 5(20μg) using Cathepsin S Antibody (HY-P81869). Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hours at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80993, 1/10,000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Rabbit IgG-HRP Secondary Antibody (HY-P8001, 1/10,000) was used for 1 hour at room temperature. -
Immunohistochemical analysis of paraffin-embedded human Colon cancer tissue using Cathepsin S antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P81869, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium. -
Immunohistochemical analysis of paraffin-embedded human Prostate Cancer tissue using Cathepsin S antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P81869, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium. -
Immunohistochemical analysis of paraffin-embedded human Esophageal Carcinoma tissue using Cathepsin S antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P81869, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium. -
Immunohistochemical analysis of paraffin-embedded human Esophageal Carcinoma tissue using Cathepsin S antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P81869, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium. -
Immunohistochemical analysis of paraffin-embedded human ovarian carcinoma tissue using Cathepsin S antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P81869,1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium. -
Immunohistochemical analysis of paraffin-embedded human Tonsil tissue using Cathepsin S antibody was performed. The section was pretreated using high-temperature and high-pressure mediated EDTA antigen retrieval buffer (pH 9.0), for 5 minutes. The tissues were incubated with primary antibody (HY-P81869, 1:100 dilution) at room temperature for 60 minutes. Detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. The tissues were counterstained with hematoxylin and mounted with neutral balsam mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Prostate Cancer tissue using Cathepsin S antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P81869, 1:300 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Prostate Cancer tissue using Cathepsin S antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P81869, 1:300 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Prostate Cancer tissue using Cathepsin S antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P81869, 1:300 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Esophageal Carcinoma tissue using Cathepsin S antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P81869, 1:300 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Esophageal Carcinoma tissue using Cathepsin S antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P81869, 1:300 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium. -
Tyramide signaling amplification based immunofluorescence was performed on paraffin-embedded human Esophageal Carcinoma tissue using Cathepsin S antibody. Antigen retrieval was performed in EDTA buffer pH 9.0 (95 °C, 20 min) followed by cooling to RT. Then incubated with primary antibody (HY-P81869, 1:300 dilution) at room temperature for 60 minutes and HRP conjugated secondary antibody for 10 minutes. Fluorescence was then developed with Vari Fluor 532 TSA (200×)（HY-D1832）. The tissues were counterstained with DAPI and mounted with Anti-fade mounting medium. -
Immunocytochemistry analysis of HeLa cells labeling Cathepsin S with Cathepsin S Antibody (HY-P81869) at 1/100 dilution . Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 in PBS for 15 minutes at room temperature, then blocked with quick block buffer for 10 minutes at room temperature. Cells were then incubated with Cathepsin S Antibody (HY-P81869) at 1/100 dilution in quick block buffer overnight at 4 ℃. AF488-conjugated Goat Anti-Rabbit IgG H&L（HY-P8002, Green） was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue). -
Immunocytochemistry analysis of HeLa cells labeling Cathepsin S with Cathepsin S Antibody (HY-P81869) at 1/200 dilution . Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 in PBS for 15 minutes at room temperature, then blocked with quick block buffer for 10 minutes at room temperature. Cells were then incubated with Cathepsin S Antibody (HY-P81869) at 1/200 dilution in quick block buffer overnight at 4 ℃. AF488-conjugated Goat Anti-Rabbit IgG H&L（HY-P8002, Green） was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue).
Background
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Function
Cathepsin S is a cysteine protease that enables MHC class II antigen presentation by degrading invariant chain (Ii) so class II molecules can bind antigenic peptides[1]. Mechanistically, purified cathepsin S, but not cathepsin B, H, or D, digests Ii from αβIi trimers and generates αβ-CLIP complexes competent for peptide loading[1]. In antigen-presenting cells, cathepsin S inhibition accumulates class II-associated Ii fragments, attenuates class II-peptide complex formation, and inhibits antigen presentation[2]. Cathepsin S also supports TAP-independent MHC class I cross-presentation, because cathepsin S-deficient dendritic cells lack this vacuolar pathway and show reduced crosspriming in vivo[3]. In vascular disease models, cathepsin S participates with cathepsins K and V in elastin degradation, generating elastin-derived peptides that promote vascular smooth muscle cell calcification through ERK1/2 signaling[4]. Compared with related isoforms, cathepsin S shows a distinct immune role because cathepsin L did not process invariant chain efficiently in large yellow croaker, while cathepsin S did[5]. For experimental applications, selective cathepsin S inhibitors such as CSI-75 increase invariant chain Lip10 and reduce antigen-specific Th1/Th17 responses in autoimmune models[6].
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Subcellular Localization
Lysosome; Secreted; Cytoplasmic vesicle, phagosome
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Isoforms & Post-Translational Modification
P25774 has 2 isomers: P25774-1: 37496 Da (predicted); P25774-2: 31626 Da (predicted).
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Subunit
Monomer
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SwissProt ID
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Synonyms
CTSS; Cathepsin S; Cat-s; CATS
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Research Field
Immunology
Documentation
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Data Sheet (261 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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User Guide for Antibodies (1077 KB)
References
[1]. Riese RJ, et al. Essential role for cathepsin S in MHC class II-associated invariant chain processing and peptide loading. Immunity. 1996 Apr;4(4):357-66. [Content Brief]
[3]. Shen L, et al. Important role of cathepsin S in generating peptides for TAP-independent MHC class I crosspresentation in vivo. Immunity. 2004 Aug;21(2):155-65. doi: 10.1016/j.immuni.2004.07.004. PMID: 15308097. [Content Brief]
[4]. Andrault PM, et al. Elastolytic activity of cysteine cathepsins K, S, and V promotes vascular calcification. Sci Rep. 2019 Jul 4;9(1):9682. [Content Brief]
[5]. Li Q, et al. Cathepsin S, but not cathepsin L, participates in the MHC class II-associated invariant chain processing in large yellow croaker (Larimichthys crocea). Fish Shellfish Immunol. 2015 Dec;47(2):743-50. [Content Brief]
[6]. Baugh M, et al. Therapeutic dosing of an orally active, selective cathepsin S inhibitor suppresses disease in models of autoimmunity. J Autoimmun. 2011 May;36(3-4):201-9. doi: 10.1016/j.jaut.2011.01.003. Epub 2011 Mar 24. PMID: 21439785. [Content Brief]
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