Antibodies are engineered by replacing one or more amino acids of a parent antibody with non cross-linked, highly reactive cysteine amino acids. Antibody fragments may also be engineered with one or more cysteine amino acids to form cysteine engineered antibody fragments (ThioFab). Methods of design, preparation, screening, and selection of the cysteine engineered antibodies are provided. Cysteine engineered antibodies (Ab), optionally with an albumin-binding peptide (ABP) sequence, are conjugated with one or more drug moieties (D) through a linker (L) to form cysteine engineered antibody-drug conjugates having Formula I:
Ab-(L-D)
p
I
where p is 1 to 4. Diagnostic and therapeutic uses for cysteine engineered antibody drug compounds and compositions are disclosed.
抗体是通过用非交联的高反应性半胱
氨酸
氨基酸替换一个或多个母体
抗体的
氨基酸来进行工程化的。
抗体片段也可以通过一个或多个半胱
氨酸
氨基酸来进行工程化,形成半胱
氨酸工程化
抗体片段(ThioFab)。提供了设计、制备、筛选和选择半胱
氨酸工程化
抗体的方法。通过连接剂(L)将半胱
氨酸工程化
抗体(Ab),可选地带有结合白蛋白肽(ABP)序列,与一个或多个药物基团(D)结合形成半胱
氨酸工程化
抗体药物结合物,其公式为I:Ab-(L-D)pI,其中p为1至4。揭示了半胱
氨酸工程化
抗体药物化合物和组合物的诊断和治疗用途。