نتایج جستجو برای: btk expression

تعداد نتایج: 873168  

Journal: :The Journal of pharmacology and experimental therapeutics 2012
Daigen Xu Yong Kim Jennifer Postelnek Minh Diem Vu Dong-Qing Hu Cheng Liao Mike Bradshaw Jonathan Hsu Jun Zhang Achal Pashine Dinesh Srinivasan John Woods Anita Levin Alison O'Mahony Timothy D Owens Yan Lou Ronald J Hill Satwant Narula Julie DeMartino Jay S Fine

Genetic mutation and pharmacological inhibition of Bruton's tyrosine kinase (Btk) both have been shown to prevent the development of collagen-induced arthritis (CIA) in mice, providing a rationale for the development of Btk inhibitors for treating rheumatoid arthritis (RA). In the present study, we characterized a novel Btk inhibitor, 6-cyclopropyl-8-fluoro-2-(2-hydroxymethyl-3-{1-methyl-5-[5-(...

Journal: :The Journal of biological chemistry 2004
Eun Jin Yang Joo-Heon Yoon Kwang Chul Chung

Bruton's tyrosine kinase (BTK) is a member of the Tec family of kinases, which is a subgroup of the nonreceptor cytoplasmic protein tyrosine kinases. BTK has been shown to be important in the proliferation, differentiation, and signal transduction of B cells. Mutations in BTK result in B cell immune deficiency disorders, such as X-linked agammaglobulinemia in humans and X-linked immunodeficienc...

2015
Yingying Zuo Yanxia Shi Xitao Li Yingqi Teng Zhengying Pan

As a critical regulator of the B-cell receptor signaling pathway, Bruton's tyrosine kinase (Btk) has attracted intensive drug discovery efforts for treating B-cell lineage cancers and autoimmune disorders. In particular, covalent inhibitors targeting Cys481 in Btk have demonstrated impressive clinical benefits, and their companion affinity probes have been crucial in the drug development proces...

2001
Henrik Hansson

Mutations in the gene coding for Bruton ́s tyrosine kinase (Btk) lead to a lymphocyte differentiation block, which results in an extreme deficiency of B cells and plasma cells in the blood. These mutations are one cause of the hereditary immunodeficiency Xlinked agammaglobulinemia. Evolutionarily, Btk belongs to the Tec family of nonreceptor protein tyrosine kinases. Members of this family share...

Journal: :Journal of immunology 2008
Jamee C Nixon Scott Ferrell Cathrine Miner Athenia L Oldham Ute Hochgeschwender Carol F Webb

The transcription factor Bright up-regulates Ig H chain production from select V region promoters and requires Bright dimerization, Bruton's tyrosine kinase (Btk), and the Btk substrate, TFII-I, for this activity. Defects in Btk cause X-linked immunodeficiency disease in mice and humans. Btk-deficient mice exhibit decreased serum IgM production, B cell developmental blocks, absence of peritonea...

Journal: :Molecular pharmacology 2000
H Okumura Z S Chen M Sakou T Sumizawa T Furukawa M Komatsu R Ikeda H Suzuki K Hirota T Aikou S I Akiyama

A newly synthesized taxoid originally from the Japanese yew Taxus cuspidata, 5-O-benzoylated taxinine K (BTK) was examined for its ability to reverse P-glycoprotein (P-gp) and multidrug resistance protein (MRP)-mediated multidrug resistance. BTK reversed the resistance to paclitaxel, doxorubicin (ADM), and vincristine (VCR) of KB-8-5 and KB-C2 cells that overexpress P-gp by directly interacting...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Shuling Guo Gregory Z Ferl Rajendar Deora Mireille Riedinger Sheng Yin James L Kerwin Joseph A Loo Owen N Witte

Loss of function of Bruton's tyrosine kinase (Btk) causes X-linked agammaglobulinemia (XLA) in humans and X-linked immunodeficiency in mice (xid). By using MS analysis and phosphopeptide-specific antibodies, we identified a tyrosine phosphorylation site (Y617) near the carboxyl terminus of the Btk domain from Btk expressed in 293T as well as DT-40 cells. Y617 is conserved in all Tec family kina...

2014
Aileen Novero Pavan M Ravella Yamei Chen George Dous Delong Liu

Research over the role of Bruton's agammaglobulinemia tyrosine kinase (BTK) in B-lymphocyte development, differentiation, signaling and survival has led to better understanding of the pathogenesis of B-cell malignancies. Down-regulation of BTK activity is an attractive novel strategy for treating patients with B-cell malignancies. Ibrutinib (PCI-32765), a potent inhibitor of BTK induces impress...

2013
Osmond J D’Cruz Fatih M Uckun

Bruton's tyrosine kinase (Btk) is intimately involved in multiple signal-transduction pathways regulating survival, activation, proliferation, and differentiation of B-lineage lymphoid cells. Btk is overexpressed and constitutively active in several B-lineage lymphoid malignancies. Btk has emerged as a new antiapoptotic molecular target for treatment of B-lineage leukemias and lymphomas. Precli...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1994
G Cheng Z S Ye D Baltimore

Bruton's tyrosine kinase (Btk) is a recently described B-cell-specific tyrosine kinase. Mutations in this gene lead to human X chromosome-linked agammaglobulinemia and murine X-linked immunodeficiency. Although genetic evidence strongly suggests that Btk plays a crucial role in B-lymphocyte differentiation and activation, its precise mechanism of action remains unknown, primarily because the pr...

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