Title |
HM71224, a novel Bruton’s tyrosine kinase inhibitor, suppresses B cell and monocyte activation and ameliorates arthritis in a mouse model: a potential drug for rheumatoid arthritis
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Published in |
Arthritis Research & Therapy, April 2016
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DOI | 10.1186/s13075-016-0988-z |
Pubmed ID | |
Authors |
Jin Kyun Park, Joo-Yun Byun, Ji Ah Park, Yu-Yon Kim, Ye Ji Lee, Jeong In Oh, Sun Young Jang, Young Hoon Kim, Yeong Wook Song, Jeewoong Son, Kwee Hyun Suh, Young-Mi Lee, Eun Bong Lee |
Abstract |
Bruton's tyrosine kinase (Btk) is critical for activation of B cells and myeloid cells. This study aimed to characterize the effects of HM71224, a novel Btk inhibitor, both in vitro and in a mouse model of experimental arthritis. The kinase inhibition profile of HM71224 was analyzed. The in vitro effects of HM71224 on B cells and monocytes were analyzed by examining phosphorylation of Btk and its downstream signaling molecules, along with cytokine production and osteoclast formation. The in vivo effects of HM71224 were investigated in a mouse model of collagen-induced arthritis (CIA). HM71224 irreversibly bound to and inhibited Btk (IC50 = 1.95 nM). The compound also inhibited the phosphorylation of Btk and its downstream molecules such as PLCγ2, in activated Ramos B lymphoma cells and primary human B cells in a dose-dependent manner. Furthermore, HM71224 effectively inhibited the production of tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-1β by human monocytes, and osteoclast formation by human monocytes. Finally, HM71224 improved experimental arthritis and prevented joint destruction in a murine model of CIA. HM71224 inhibits Btk in B cells and monocytes and ameliorates experimental arthritis in a mouse model. Thus, HM71224 is a potential novel therapeutic agent for rheumatoid arthritis in humans. |
X Demographics
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Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Netherlands | 1 | 3% |
Unknown | 37 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 11 | 29% |
Other | 4 | 11% |
Student > Ph. D. Student | 4 | 11% |
Student > Bachelor | 3 | 8% |
Student > Doctoral Student | 2 | 5% |
Other | 6 | 16% |
Unknown | 8 | 21% |
Readers by discipline | Count | As % |
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Chemistry | 8 | 21% |
Medicine and Dentistry | 6 | 16% |
Biochemistry, Genetics and Molecular Biology | 5 | 13% |
Agricultural and Biological Sciences | 4 | 11% |
Pharmacology, Toxicology and Pharmaceutical Science | 4 | 11% |
Other | 3 | 8% |
Unknown | 8 | 21% |