What does ZAP-70 stand for?
What does ZAP-70 stand for?
Zeta-chain-associated protein kinase 70
ZAP-70 (Zeta-chain-associated protein kinase 70) is a protein normally expressed near the surface membrane of lymphocytes (T cells, natural killer cells, and a subset of B cells). Its molecular weight is 70 kDa, and it is a member of the protein-tyrosine kinase family.
Is ZAP-70 a tyrosine kinase?
Zap-70, a crucial molecule for the selective activation of T cells, through its interaction with the zeta chain of the TCR/CD3 complex, is a tyrosine kinase.
How is ZAP-70 activated?
ZAP–70 is activated by a variety of signals including phosphorylation of the kinase domain (KD), and binding of its regulatory tandem Src homology 2 (SH2) domains to the T cell receptor.
What is kinase inhibitor used for?
Certain kinases are more active in some types of cancer cells and blocking them may help keep the cancer cells from growing. Kinase inhibitors may also block the growth of new blood vessels that tumors need to grow. Some kinase inhibitors are used to treat cancer.
What is Richters syndrome?
Richter’s Syndrome (RS), also known as Richter’s Transformation, is a rare complication of Chronic Lymphocytic Leukaemia (CLL) and/or Small Lymphocytic Lymphoma (SLL). It is characterised by the sudden transformation of the CLL/SLL into a significantly more aggressive form of large cell lymphoma.
What is ZAP-70 CLL?
ZAP-70 is an independent negative prognostic marker in chronic lymphocytic leukemia (CLL). Usually, its expression is investigated by flow cytometric protocols in which the percentage of ZAP-70 positive CLL cells is determined in respect to isotypic control (ISO-method) or residual ZAP-70 positive T cells (T-method).
Are kinase inhibitors considered chemotherapy?
Any drug used to treat cancer (including tyrosine kinase inhibitors or TKIs) can be considered chemo, but here chemo is used to mean treatment with conventional cytotoxic (cell-killing) drugs that mainly kill cells that are growing and dividing rapidly. Chemo was once one of the main treatments for CML.
What class of drugs are kinase inhibitors?
Because these three drugs do not bind next to the ATP-binding pocket and are indirect inhibitors of protein kinase activity, they are classified as type IV allosteric inhibitors.
Are leukemia and lymphoma related?
Both are forms of blood cancer and both involve white blood cells, but the problems that each disease causes and the way they’re treated are very different. “I would say leukemia and lymphoma are kind of related, like cousins,” explains hematologist Aaron Gerds, MD, MS.
Can lymphoma be chronic?
Chronic lymphocytic leukemia (CLL) and small lymphocytic lymphoma (SLL) are the same disease, but in CLL cancer cells are found mostly in the blood and bone marrow. In SLL cancer cells are found mostly in the lymph nodes. Chronic lymphocytic leukemia/small lymphocytic lymphoma is a type of non-Hodgkin lymphoma.
What does CD38 positive mean?
Patients in the CD38-positive cohort were characterised by an unfavourable clinical course with a more advanced disease stage, poor responsiveness to chemotherapy, short time to initiation of first treatment and shorter survival.