Key Product Details

Validated by

Biological Validation

Species Reactivity

Validated:

Human

Applications

Flow Cytometry, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Paraffin, Simple Western, Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Rabbit

Format

BSA Free

Concentration

1.0 mg/ml

View all xCT/SLC7A11 Antibodies »

Product Summary for xCT Antibody - BSA Free

Immunogen

This xCT Antibody was prepared from a partial synthetic peptide made to an N-terminal portion of the human xCT protein (between amino acids 1-60) [UniProt Q9UPY5]

Clonality

Polyclonal

Host

Rabbit

Theoretical MW

55 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Scientific Data Images for xCT Antibody - BSA Free

Simple Western: xCT AntibodyBSA Free [NBP2-88948]

Simple Western: xCT AntibodyBSA Free [NBP2-88948]

Simple Western: xCT Antibody [NBP2-88948] - Simple Western lane view shows a specific band for xCT using NBP2-88948 at 25 ug/ml in HeLa and HeLa + DEM cell lysates. This experiment was performed under reducing conditions using the 12-230 kDa separation system.
Immunohistochemistry-Paraffin: xCT Antibody - BSA Free [NBP2-88948]

Immunohistochemistry-Paraffin: xCT Antibody - BSA Free [NBP2-88948]

Immunohistochemistry-Paraffin: xCT Antibody [NBP2-88948] - Analysis of a FFPE tissue section of the human small intestine using 1:200 dilution of xCT antibody (NBP2-88948). The signal was developed using HRP-DAB method which followed counterstaining of the cells with hematoxylin. The antibody generated mainly cytoplasmic staining.

Applications for xCT Antibody - BSA Free

Application
Recommended Usage

Immunohistochemistry

1:200

Immunohistochemistry-Paraffin

1:200

Simple Western

25 ug/ml
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Immunogen affinity purified

Formulation

PBS

Format

BSA Free

Preservative

0.02% Sodium Azide

Concentration

1.0 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: xCT/SLC7A11

xCT, also called SLC7A11, is the light chain component of the cysteine/glutamate amino acid exchange transporter system Xc (1,2). System Xc is composed of two subunits, the light chain (xCT) and the heavy chain (CD98hc, SLC3A2) and functions by cellular uptake of cysteine in exchange for glutamate in a 1:1 ratio (1,2). The human xCT gene is located on chromosome 4q28.3 and is synthesized as a 12-pass transmembrane protein with both the N- and C-terminals located intracellularly (2, 3). xCT is a 501 amino acids (aa) protein with a theoretical molecular weight of 55.4 kDa (3, 4). xCT expression serves many functional purposes in cells including redox balance, ferroptosis, and chemotherapy or cancer drug resistance (1-3, 5-7). Import of cysteine by xCT plays a role in promoting oxidative stress response as cysteine is a precursor for glutathione synthesis (2, 3, 5-7). Glutathione is a cofactor for ROS-detoxifying enzymes, including glutathione peroxidase (GPX), which help defend from cellular ROS-induced damage (2, 3, 5-7). In addition to its antioxidant role, xCT also utilizes glutathione and GPX to inhibit ferroptosis, which is iron-dependent, non-apoptotic cell-death that occurs with overproduction of lipid hydroperoxides (1-3, 5-7). As cancer cells often experience high oxidative stress, it is understandable that xCT is overexpressed in a variety of cancer types, such as acute myeloid leukemia and breast cancer, and affects cancer growth, invasion, metastasis, and prognosis (1-3, 5-7). xCT expression has also been shown to play a role in glutathione-mediated drug resistance during cancer treatment (1,5,7). However, studies have shown that xCT knockdown results in increased tumor cell death, highlighting its suitability as a druggable target (1,5,7). Specifically, the xCT inhibitors Sulfasalazine, an approved anti-inflammatory drug, and Erastin, a small molecule inhibitor, are potential therapeutic modalities for treating a variety of cancers when used in combination with radiotherapy or immunotherapy (1-3, 5-7).

References

1. Liu, J., Xia, X., & Huang, P. (2020). xCT: A Critical Molecule That Links Cancer Metabolism to Redox Signaling. Molecular therapy : the journal of the American Society of Gene Therapy. https://doi.org/10.1016/j.ymthe.2020.08.021

2. Koppula, P., Zhang, Y., Zhuang, L., & Gan, B. (2018). Amino acid transporter SLC7A11/xCT at the crossroads of regulating redox homeostasis and nutrient dependency of cancer. Cancer communications. https://doi.org/10.1186/s40880-018-0288-x

3. Lin, W., Wang, C., Liu, G., Bi, C., Wang, X., Zhou, Q., & Jin, H. (2020). SLC7A11/xCT in cancer: biological functions and therapeutic implications. American journal of cancer research.

4. xCT: Uniprot (Q9UPY5)

5. Koppula, P., Zhuang, L., & Gan, B. (2020). Cystine transporter SLC7A11/xCT in cancer: ferroptosis, nutrient dependency, and cancer therapy. Protein & cell. https://doi.org/10.1007/s13238-020-00789-5

6. Liu, L., Liu, R., Liu, Y., Li, G., Chen, Q., Liu, X., & Ma, S. (2020). Cystine-glutamate antiporter xCT as a therapeutic target for cancer. Cell biochemistry and function. https://doi.org/10.1002/cbf.3581

7. Cui, Q., Wang, J. Q., Assaraf, Y. G., Ren, L., Gupta, P., Wei, L., Ashby, C. R., Jr, Yang, D. H., & Chen, Z. S. (2018). Modulating ROS to overcome multidrug resistance in cancer. Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy. https://doi.org/10.1016/j.drup.2018.11.001

Long Name

Cationic 1/Solute Carrier Family 7 Member 11

Alternate Names

CCBR1, SLC7A11

Gene Symbol

SLC7A11

Additional xCT/SLC7A11 Products

Product Documents for xCT Antibody - BSA Free

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

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Product Specific Notices for xCT Antibody - BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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