Anti-Medullary epithelium Antibody, clone ER-TR5

The thymus is considered as the primary lymphoid organ that is responsible for the generation and maturation of T cells. Thymic epithelial cells account for the majority of thymic stromal components. These cells can be divided into cortical and medullary thymic epithelial cells based on their localization within the thymus. Cortical thymic epithelial cells are essential for the positive selection of T cells, whereas the medullary thymic epithelial cells (mTEC) play a role in inducing negative selection of highly reactive T cells that are required for establishing central self-tolerance. In murine species, mTEC are further divided into mTEC low and mTEC high according to the expression levels of several maturation molecules, such as MHCII and CD80. mTEC low cells can serve as precursors for mature mTEC high cells. mTECs have also been classified into four major subsets, termed mTEC I-IV depending on their distinct transcriptional and molecular characteristics. mTEC I and II subpopulation appear early and can be detected at E18.5 and are most proliferative cells. mTEC III are detected in thymus at 4-weeks. mTEC IV are visible on day 6 in neonatal mice. The function of mTECs is dependent on their characteristic features such as ectopic expression of peripheral tissue restricted antigens and their master regulator-autoimmune regulator (Aire), expression of various chemokines and cytokines. Lymphotoxin β receptor (LTβR) is reported to be an essential regulator of multiple mTEC subsets within the mTEC low compartment. It controls thymic tolerance by regulating the frequency and makeup of intrathymic dendritic cells that are required for effective thymocyte negative selection. Clone ER-TR5 is shown to exclusively react with mTECs. (Ref.: Wang, HX., et al. (2020). Front. Immunol. 10; 3099; Lucas, B., et al. (2020). Nat. Commun. 11; Article 2198; Cosway, EJ., et al. (2017). J. Exp. Med. 214(11); 3183-3195; Van Vliet, E., et al. (1984). Eur. J. Immunol. 14(6); 524-529).

Clone ER-TR5 is a rat monoclonal antibody that detects Medullary epithelial cells.

Thymic stromal cells isolated from C3H mice.

Quality Control Testing

Evaluated by Immunohistochemistry in Mouse thymus tissue.

Immunohistochemistry Applications: 1:150 dilution of this antibody detected Medullary epithelium in Mouse thymus tissue sections.

Tested applications

Immunofluorescence Analysis: A representative lot detected Medullary epithelium in Immunofluorescence applications (Akiyama, T., et al. (2005). Science. 308(5719):248-51; Lei, Y., et al. (2011). J Exp Med. 208(2):383-94; Cosway, E.J., et al. (2017). J Exp Med. 214(11):3183-3195).

Immunohistochemistry Applications: A representative lot detected Medullary epithelium in Immunohistochemistry applications (Van Vliet, E., et al. (1984). Eur J Immunol. 14(6):524-9; Akiyama, T., et al. (2005). Science.;308(5719):248-51; Dooley, J., et al. (2006). J Immunol. 176(11):6484-90; Lei, Y., et al. (2011). J Exp Med. 208(2):383-94; Cosway, E.J., et al. (2017). J Exp Med. 214(11):3183-3195).

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user

Anti-Medullary epithelium, clone ER-TR5, Cat. No. MABF2818, is a rat monoclonal antibody that detects Medullary epithelium and is tested for use in Immunohistochemistry and Immunofluorescence.

Purified rat monoclonal antibody IgM in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Recommended storage: +2°C to +8°C.

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.