This invention discloses antibodies against ROR1 or their
antigen-binding fragments, kits, and their applications, relating to the fields of
biotechnology and medical technology. This invention screened and obtained 10 antibodies that have high affinity for the ROR1
protein and can specifically bind to it. This allows for the development of ROR1 detection kits, tumor diagnostic and prognostic kits, as well as pharmaceutical compositions,
antibody-
drug conjugates, or other therapeutic methods using the aforementioned antibodies or their
antigen-binding fragments. Experimental
verification shows that the antibodies provided by this invention have a high
killing rate against
tumor cells. All of the above antibodies exhibit concentration-dependent
cytotoxicity; the higher the
antibody concentration, the better the anti-tumor activity. Therefore, the antibodies or their
antigen-binding fragments provided by this invention show promising potential for the preparation of tumor therapeutic drugs.