نتایج جستجو برای: btk expression

تعداد نتایج: 873168  

Journal: :Journal of immunology 2009
Shruti Sharma Gregory Orlowski Wenxia Song

The high efficiency of Ag processing and presentation by B cells requires Ag-induced BCR signaling and actin cytoskeleton reorganization, although the underlying mechanism for such requirements remains elusive. In this study, we identify Bruton's tyrosine kinase (Btk) as a linker connecting BCR signaling to actin dynamics and the Ag transport pathway. Using xid mice and a Btk inhibitor, we show...

2017
Kathleen M Gillooly Claudine Pulicicchio Mark A Pattoli Lihong Cheng Stacey Skala Elizabeth M Heimrich Kim W McIntyre Tracy L Taylor Daniel W Kukral Shailesh Dudhgaonkar Jignesh Nagar Dana Banas Scott H Watterson Joseph A Tino Aberra Fura James R Burke

Bruton's tyrosine kinase (BTK) regulates critical signal transduction pathways involved in the pathobiology of rheumatoid arthritis (RA) and other autoimmune disorders. BMS-986142 is a potent and highly selective reversible small molecule inhibitor of BTK currently being investigated in clinical trials for the treatment of both RA and primary Sjögren's syndrome. In the present report, we detail...

2015
Nam Chu Philip A Cole

Bruton's tyrosine kinase, an enzyme that is important for B cell function, can be activated in a number of ways. Bruton's tyrosine kinase (Btk) and activation by soluble inositol hexakisphosphate. eLife 4:e06074. Image The enzyme Btk has crucial roles in tyrosine kinase signaling and the development of certain immune cells B cells are immune cells that protect the body against pathogens by maki...

Journal: :Blood 2012
Yu-Tzu Tai Betty Y Chang Sun-Young Kong Mariateresa Fulciniti Guang Yang Yolanda Calle Yiguo Hu Jianhong Lin Jian-Jun Zhao Antonia Cagnetta Michele Cea Michael A Sellitto Mike Y Zhong Qiuju Wang Chirag Acharya Daniel R Carrasco Joseph J Buggy Laurence Elias Steven P Treon William Matsui Paul Richardson Nikhil C Munshi Kenneth C Anderson

Bruton tyrosine kinase (Btk) has a well-defined role in B-cell development, whereas its expression in osteoclasts (OCs) further suggests a role in osteoclastogenesis. Here we investigated effects of PCI-32765, an oral and selective Btk inhibitor, on osteoclastogenesis as well as on multiple myeloma (MM) growth within the BM microenvironment. PCI-32765 blocked RANKL/M-CSF-induced phosphorylation...

Journal: :Journal of immunology 2001
E K Jo H Kanegane S Nonoyama S Tsukada J H Lee K Lim M Shong C H Song H J Kim J K Park T Miyawaki

In this report, we describe seven mutations, including a novel single base pair substitution in intron 1, of the Bruton's tyrosine kinase (Btk) gene found in 12 Korean patients with X-linked agammaglobulinemia. Various mutations, including three novel genetic alterations, were discovered using single-strand conformation polymorphism analysis and direct DNA sequencing. The effect of the intron 1...

Journal: :JCI insight 2017
Arna Katewa Yugang Wang Jason A Hackney Tao Huang Eric Suto Nandhini Ramamoorthi Cary D Austin Meire Bremer Jacob Zhi Chen James J Crawford Kevin S Currie Peter Blomgren Jason DeVoss Julie A DiPaolo Jonathan Hau Adam Johnson Justin Lesch Laura E DeForge Zhonghua Lin Marya Liimatta Joseph W Lubach Sami McVay Zora Modrusan Allen Nguyen Chungkee Poon Jianyong Wang Lichuan Liu Wyne P Lee Harvey Wong Wendy B Young Michael J Townsend Karin Reif

Systemic lupus erythematosus (SLE) is often associated with exaggerated B cell activation promoting plasma cell generation, immune-complex deposition in the kidney, renal infiltration of myeloid cells, and glomerular nephritis. Type-I IFNs amplify these autoimmune processes and promote severe disease. Bruton's tyrosine kinase (Btk) inhibitors are considered novel therapies for SLE. We describe ...

2014
Karin Strijbis Ömer H. Yilmaz Stephanie K. Dougan Alexandre Esteban Andrea Gröne Carol A. Kumamoto Hidde L. Ploegh

The commensal yeast Candida albicans is part of the human intestinal microflora and is considered a "pathobiont", a resident microbe with pathogenic potential yet harmless under normal conditions. The aim of this study was to investigate the effect of C. albicans on inflammation of the intestinal tract and the role of Bruton's tyrosine kinase (Btk). Btk is an enzyme that modulates downstream si...

2016
Daniel Massó-Vallés Toni Jauset Laura Soucek

Ibrutinib (Imbruvica ® , also known as PCI-32765) is a first-in-class, irreversible small-molecule inhibitor of Bruton's Tyrosine Kinase (BTK) that binds covalently to cysteine C481 within the ATP-binding pocket. Since BTK is a Tec family non-receptor tyrosine kinase that is specifically required for B-cell antigen receptor (BCR) signaling, ibrutinib was initially developed for the treatment of...

Journal: :Blood 2011
Karoline V Gleixner Matthias Mayerhofer Sabine Cerny-Reiterer Gregor Hörmann Uwe Rix Keiryn L Bennett Emir Hadzijusufovic Renata A Meyer Winfried F Pickl Jason Gotlib Hans-Peter Horny Andreas Reiter Gerlinde Mitterbauer-Hohendanner Giulio Superti-Furga Peter Valent

Systemic mastocytosis (SM) either presents as a malignant neoplasm with short survival or as an indolent disease with normal life expectancy. In both instances, neoplastic mast cells (MCs) harbor D816V-mutated KIT, suggesting that additional oncogenic mechanisms are involved in malignant transformation. We here describe that Lyn and Btk are phosphorylated in a KIT-independent manner in neoplast...

2017
Dara K. Mohammad Beston F. Nore C. I. Edvard Smith

Bruton’s tyrosine kinase (BTK) mediated signaling is critical for B cell development and activation. The physiological role of BTK is evident since its functional loss results in a differentiation block of B cells beyond the pro-B cell stage causing X-linked agammaglobulinemia. Inhibitors of BTK, such as ibrutinib and acalabrutinib profoundly impair BCR signaling. They are highly effective in t...

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