|Title||Dysfunctional mitochondrial fission impairs cell reprogramming. |
|Publication Type||Journal Article |
|Year of Publication||2016 |
|Authors||Prieto J, León M, Ponsoda X, García-García F, Bort R, Serna E, Barneo-Muñoz M, Palau F, Dopazo J, López-García C, Torres J |
|Journal Title||Cell cycle (Georgetown, Tex.) |
|Journal Date||2016 Oct 18 |
|Abstract||We have recently shown that mitochondrial fission is induced early in reprogramming in a Drp1-dependent manner; however, the identity of the factors controlling Drp1 recruitment to mitochondria was unexplored. To investigate this, we used a panel of RNAi targeting factors involved in the regulation of mitochondrial dynamics and we observed that MiD51, Gdap1 and, to a lesser extent, Mff were found to play key roles in this process. Cells derived from Gdap1-null mice were used to further explore the role of this factor in cell reprogramming. Microarray data revealed a prominent down-regulation of cell cycle pathways in Gdap1-null cells early in reprogramming and cell cycle profiling uncovered a G2/M growth arrest in Gdap1-null cells undergoing reprogramming. High-Content analysis showed that this growth arrest was DNA damage-independent. We propose that lack of efficient mitochondrial fission impairs cell reprogramming by interfering with cell cycle progression in a DNA damage-independent manner.
|Alternate Journal||Cell Cycle |