Phosphorylation of the Human MicroRNA-Generating Complex Mediates MAPK/Erk Signaling Export

@article{citeulike:5882194, abstract = {MicroRNAs (miRNAs) govern an expanding number of biological and disease processes. Understanding the mechanisms by which the miRNA pathway is regulated, therefore, represents an important area of investigation. We determined that the human miRNA-generating complex is comprised of Dicer and phospho-TRBP isoforms. Phosphorylation of TRBP is mediated by the mitogen-activated protein kinase (MAPK) Erk. Expression of phospho-mimic TRBP and TRBP phosphorylation enhanced miRNA production by increasing stability of the miRNA-generating complex. Mitogenic signaling in response to serum and the tumor promoter PMA was dependent on TRBP phosphorylation. These effects were accompanied by a coordinated increase in levels of growth-promoting miRNA and reduced expression of let-7 tumor suppressor miRNA. Conversely, pharmacological inhibition of MAPK/Erk resulted in an anti-growth miRNA profile. Taken together, these studies indicate that the MAPK/Erk pathway regulates the miRNA machinery and suggest a general principle, wherein signaling systems target the miRNA pathway to achieve biological responses.}, author = {Paroo, Zain and Ye, Xuecheng and Chen, She and Liu, Qinghua}, citeulike-article-id = {5882194}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.cell.2009.06.044}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/S0092867409007910}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/19804757}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=19804757}, day = {02}, doi = {10.1016/j.cell.2009.06.044}, issn = {00928674}, journal = {Cell}, keywords = {kinase, mirna, phosphorylation}, month = {October}, number = {1}, pages = {112--122}, posted-at = {2009-11-11 11:15:04}, priority = {2}, title = {Phosphorylation of the Human MicroRNA-Generating Complex Mediates MAPK/Erk Signaling}, url = {http://dx.doi.org/10.1016/j.cell.2009.06.044}, volume = {139}, year = {2009} }

TY - JOUR ID - citeulike:5882194 L3 - citeulike-article-id:5882194 N2 - MicroRNAs (miRNAs) govern an expanding number of biological and disease processes. Understanding the mechanisms by which the miRNA pathway is regulated, therefore, represents an important area of investigation. We determined that the human miRNA-generating complex is comprised of Dicer and phospho-TRBP isoforms. Phosphorylation of TRBP is mediated by the mitogen-activated protein kinase (MAPK) Erk. Expression of phospho-mimic TRBP and TRBP phosphorylation enhanced miRNA production by increasing stability of the miRNA-generating complex. Mitogenic signaling in response to serum and the tumor promoter PMA was dependent on TRBP phosphorylation. These effects were accompanied by a coordinated increase in levels of growth-promoting miRNA and reduced expression of let-7 tumor suppressor miRNA. Conversely, pharmacological inhibition of MAPK/Erk resulted in an anti-growth miRNA profile. Taken together, these studies indicate that the MAPK/Erk pathway regulates the miRNA machinery and suggest a general principle, wherein signaling systems target the miRNA pathway to achieve biological responses. IS - 1 JF - Cell SN - 00928674 EP - 122 TI - Phosphorylation of the Human MicroRNA-Generating Complex Mediates MAPK/Erk Signaling VL - 139 SP - 112 KW - kinase KW - mirna KW - phosphorylation AU - Paroo, Zain AU - Ye, Xuecheng AU - Chen, She AU - Liu, Qinghua PY - 2009/10/02/ UR - http://dx.doi.org/10.1016/j.cell.2009.06.044 ER -