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In JoVE (1)
- Modified Yeast-Two-Hybrid System to Identify Proteins Interacting with the Growth Factor Progranulin
Other Publications (1)
Articles by Qing-Yun Tian in JoVE
Modified Yeast-Two-Hybrid System to Identify Proteins Interacting with the Growth Factor Progranulin
Qing-Yun Tian1, Yun-Peng Zhao1, Chuan-ju Liu1,2
1Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, 2Department of Cell Biology, New York University School of Medicine
We have modified the conventional yeast two-hybrid screening, an effective genetic tool in identifying protein interaction. This modification markedly shortens the process, reduces the workload, and most importantly, reduces the number of false positives. In addition, this approach is reproducible and reliable.
Other articles by Qing-Yun Tian on PubMed
The Growth Factor Progranulin Binds to TNF Receptors and is Therapeutic Against Inflammatory Arthritis in Mice
Science (New York, N.Y.). Apr, 2011 | Pubmed ID: 21393509
The growth factor progranulin (PGRN) has been implicated in embryonic development, tissue repair, tumorigenesis, and inflammation, but its receptors remain unidentified. We report that PGRN bound directly to tumor necrosis factor receptors (TNFRs) and disturbed the TNFα-TNFR interaction. PGRN-deficient mice were susceptible to collagen-induced arthritis, and administration of PGRN reversed inflammatory arthritis. Atsttrin, an engineered protein composed of three PGRN fragments, exhibited selective TNFR binding. PGRN and Atsttrin prevented inflammation in multiple arthritis mouse models and inhibited TNFα-activated intracellular signaling. Collectively, these findings demonstrate that PGRN is a ligand of TNFR, an antagonist of TNFα signaling, and plays a critical role in the pathogenesis of inflammatory arthritis in mice. They also suggest new potential therapeutic interventions for various TNFα-mediated pathologies and conditions, including rheumatoid arthritis.