کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1986517 | 1540255 | 2014 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Interferon regulatory factor-1 (IRF-1) interacts with regulated in development and DNA damage response 2 (REDD2) in the cytoplasm of mouse bone marrow cells Interferon regulatory factor-1 (IRF-1) interacts with regulated in development and DNA damage response 2 (REDD2) in the cytoplasm of mouse bone marrow cells](/preview/png/1986517.png)
IRF-1 is a critical hematopoietic transcription factor, which regulates cell growth, development of immune cells, immune response, tumor suppression, apoptosis and autophagy in mammalian cells. Protein-protein interactions of IRF-1 in mouse bone marrow cells (BMCs) by GST-IRF-1 pull-down followed by mass spectrometry, coimmunoprecipitation, immunoblotting and colocalization show that regulated in development and DNA damage response 2 (REDD2) is an IRF-1-interacting protein. REDD2 is a highly conserved mammalian regulatory protein of the TSC2/mTOR pathway. It is structurally similar to REDD1 but has a distinct loop region. Cellular IRF-1 and REDD2 complex is present in the cytoplasm of BMCs as distinct speckles in punctate pattern. In vitro interaction of recombinant IRF-1 and REDD2 shows their physical interaction. Taken together, our results suggest that IRF-1 physically interacts with REDD2 in the large cytoplasmic protein complex, which may function as cellular signaling proteins for ‘cross-talk’ of mTOR and cytokine pathways during regulation of cell growth/proliferation, apoptosis and autophagy of mammalian bone marrow cells during health and disease.
Journal: International Journal of Biological Macromolecules - Volume 65, April 2014, Pages 41–50