| First Author | Lee BC | Year | 2006 |
| Journal | Blood | Volume | 108 |
| Issue | 3 | Pages | 904-7 |
| PubMed ID | 16574955 | Mgi Jnum | J:109203 |
| Mgi Id | MGI:3626086 | Doi | 10.1182/blood-2005-12-4885 |
| Citation | Lee BC, et al. (2006) Identification of the nonreceptor tyrosine kinase MATK/CHK as an essential regulator of immune cells using Matk/CHK-deficient mice. Blood 108(3):904-7 |
| abstractText | Matk/CHK knockout mice were reported to show no apparent phenotypic abnormalities. This was thought to be due to the homologous kinase Csk that compensates for Matk/CHK. Here, we present the first evidence that the nonreceptor tyrosine kinase, Matk/CHK, is an important modulator of immune cell signaling. We found that the frequency of primitive hematopoietic cells, the side population c-kit(+) Lin(-) Sca-1(+) (SPKLS) cells, in Matk/CHK(-/-) mice was increased 2.2-fold compared with the control mice. Moreover, Matk/CHK deficiency led to significantly higher pre-B cell colony formation following IL-7 stimulation. Interestingly, when mice received the in vivo antigen challenge of TNP-ovalbumin followed by restimulation, the Matk/CHK(-/-) lymph node and spleen cells produced significantly lower IFN-gamma levels compared with the respective wild-type cells. Our study indicates that Matk/CHK is not functionally redundant with Csk, and that this tyrosine kinase plays an important role as a regulator of immunologic responses. |
