Breast cancer is a serious type of
cancer that affects many women each year, often leading to death. To choose the right treatment for
breast cancer, studying biomarkers is crucial, and one way to do this is by using the immunohistochemical technique (IHC). Biomarkers like
Estrogen receptor (ER),
progesterone receptor (PR), Ki67, and P53 play a crucial role in determining the prognosis, progression, and
response to treatment of
breast cancer. Specific
monoclonal antibodies against these biomarkers were created by immunizing mice with peptides derived from these proteins. These antibodies were then tested for specificity using ELISA and IHC
staining on normal and cancerous tissues, confirming their ability to recognize the receptors. Additionally, the antibodies were evaluated for
isotype,
affinity constant, and their ability to detect natural antigens in
flow cytometry and
western blot.