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Interaction of AIM with insulin-like growth factor-binding protein-4.
| Content Provider | Europe PMC |
|---|---|
| Author | YOU, QIANG WU, YAN YAO, NANNAN SHEN, GUANNAN ZHANG, YING XU, LIANGGUO LI, GUIYING JU, CYNTHIA |
| Copyright Year | 2015 |
| Abstract | Apoptosis inhibitor of macrophages (AIM/cluster of differentiation 5 antigen-like/soluble protein α) has been shown to inhibit cellular apoptosis; however, the underlying molecular mechanism has not been elucidated. Using yeast two-hybrid screening, the present study uncovered that AIM binds to insulin-like growth factor binding protein-4 (IGFBP-4). AIM interaction with IGFBP-4, as well as IGFBP-2 and -3, but not with IGFBP-1, -5 and -6, was further confirmed by co-immunoprecipitation (co-IP) using 293 cells. The binding activity and affinity between AIM and IGFBP-4 in vitro were analyzed by co-IP and biolayer interferometry. Serum depletion-induced cellular apoptosis was attenuated by insulin-like growth factor-I (IGF-I), and this effect was abrogated by IGFBP-4. Of note, in the presence of AIM, the inhibitory effect of IGFBP-4 on the anti-apoptosis function of IGF-I was attenuated, possibly through binding of AIM with IGFBP-4. In conclusion, to the best of our knowledge, the present study provides the first evidence that AIM binds to IGFBP-2, -3 and -4. The data suggest that this interaction may contribute to the mechanism of AIM-mediated anti-apoptosis function. |
| ISSN | 11073756 |
| Journal | International Journal of Molecular Medicine |
| Volume Number | 36 |
| PubMed Central reference number | PMC4533773 |
| Issue Number | 3 |
| PubMed reference number | 26135353 |
| e-ISSN | 1791244X |
| DOI | 10.3892/ijmm.2015.2262 |
| Language | English |
| Publisher | D.A. Spandidos |
| Publisher Date | 2015-06-26 |
| Access Restriction | Open |
| Rights License | This is an open-access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. The article may be redistributed, reproduced, and reused for non-commercial purposes, provided the original source is properly cited. Copyright © 2015, Spandidos Publications |
| Subject Keyword | apoptosis inhibitor of macrophage insulin-like growth factor-binding protein-4 insulin-like growth factor protein interaction apoptosis |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Medicine |