Drug targets a biomolecule that can directly bind to drugs and then react. Generally, the target refers to a protein related to the cause of disease. The focus of the target began with focusing on tumors and then began to spread to various fields. Introduction to  TAG-72  is a common target in medicine.

Tumor-associated glycoprotein 72 (TAG-72) is a high-molecular-weight mucin, also known as CA72-4, which is mainly found in the extracellular matrix of tumors. This glycoprotein is not normally expressed in normal tissues but is overexpressed in tumors of several cancers, such as colon and rectal cancer (colorectal cancer), stomach, pancreas, ovary, prostate, lung, breast cancer, etc. can be recognized by two monoclonal antibodies, B72.3 and cc49. The increased serum level of CA72-4 is mainly seen in gastric cancer patients, which belongs to non-specific tumor markers. With the abnormal proliferation of tumor cells, it can be released into the blood circulation by exocrine means. Its high expression is related to tumor invasion, metastasis, and prognosis.

When TAG-72 is expressed on the surface of tumor cells, it may be recognized as an alien antigen by the body's immune system, thus triggering an immune response. This process may involve the binding of T cell receptor (TCR) to the MHC-antigen peptide complex, which then activates T cells, releases cytokines such as IFN- γ and TNF- α, and triggers a series of immune responses. As a mucin-like glycoprotein, TAG-72 may be involved in cell-cell adhesion and cell interaction with the extracellular matrix. Although specific signaling pathways may vary by cell type and microenvironment, they generally involve the activation of adhesion molecules such as integrins (Integrin), as well as the conduction of downstream signaling pathways, such as MAPK, PI3K / Akt, etc. TAG-72 expression may also be regulated by various factors in the tumor microenvironment, which may affect the expression level of TAG-72 by activating or inhibiting specific signaling pathways, which in turn may alter the biological behavior of tumor cells

Currently, various immune drugs targeting TAG-72 targets are in the updating iteration, and taking the disease alone or in combination with other products has become a new approach with remarkable achievements. The TAG-72 targets have shown important research value and application prospects in both biology and drug research and development. With further research and detection technology advances, TAG-72 target products are also essential in medical research. Alpha Lifetech can provide TAG-72 corresponding products and help each customer's research and development. Alpha Lifetech focuses on high-precision detection development and validation services to support drug screening and biosimilar discovery. Our detection methods, including ELISA, cell-based functional testing, and flow cytometry, have undergone rigorous sensitivity, specificity, and reproducibility testing. In addition to testing and development, our team also provides data analysis, scheme optimization, and cross-species reactivity testing to ensure reliable results.