| RRC ID |
18093
|
| 著者 |
Esteves TC, Psathaki OE, Pfeiffer MJ, Balbach ST, Zeuschner D, Shitara H, Yonekawa H, Siatkowski M, Fuellen G, Boiani M.
|
| タイトル |
Mitochondrial physiology and gene expression analyses reveal metabolic and translational dysregulation in oocyte-induced somatic nuclear reprogramming.
|
| ジャーナル |
PLoS One
|
| Abstract |
While reprogramming a foreign nucleus after somatic cell nuclear transfer (SCNT), the enucleated oocyte (ooplasm) must signal that biomass and cellular requirements changed compared to the nucleus donor cell. Using cells expressing nuclear-encoded but mitochondria-targeted EGFP, a strategy was developed to directly distinguish maternal and embryonic products, testing ooplasm demands on transcriptional and post-transcriptional activity during reprogramming. Specifically, we compared transcript and protein levels for EGFP and other products in pre-implantation SCNT embryos, side-by-side to fertilized controls (embryos produced from the same oocyte pool, by intracytoplasmic injection of sperm containing the EGFP transgene). We observed that while EGFP transcript abundance is not different, protein levels are significantly lower in SCNT compared to fertilized blastocysts. This was not observed for Gapdh and Actb, whose protein reflected mRNA. This transcript-protein relationship indicates that the somatic nucleus can keep up with ooplasm transcript demands, whilst transcription and translation mismatch occurs after SCNT for certain mRNAs. We further detected metabolic disturbances after SCNT, suggesting a place among forces regulating post-transcriptional changes during reprogramming. Our observations ascribe oocyte-induced reprogramming with previously unsuspected regulatory dimensions, in that presence of functional proteins may no longer be inferred from mRNA, but rather depend on post-transcriptional regulation possibly modulated through metabolism.
|
| 巻・号 |
7(6)
|
| ページ |
e36850
|
| 公開日 |
2012-1-1
|
| DOI |
10.1371/journal.pone.0036850
|
| PII |
PONE-D-11-21480
|
| PMID |
22693623
|
| PMC |
PMC3367913
|
| MeSH |
Adenosine Diphosphate / metabolism
Adenosine Triphosphate / metabolism
Animals
Calcium / metabolism
Cells, Cultured
Cellular Reprogramming / genetics
Cellular Reprogramming / physiology*
Cryoelectron Microscopy
Female
Hydrogen Peroxide / metabolism
Membrane Potential, Mitochondrial / genetics
Membrane Potential, Mitochondrial / immunology
Membrane Potential, Mitochondrial / physiology
Mice
Mice, Inbred C57BL
Microscopy, Electron, Transmission
Mitochondria / metabolism*
Mitochondria / ultrastructure
Oocytes / cytology*
Oocytes / ultrastructure
|
| IF |
2.74
|
| 引用数 |
3
|
|
WOS 分野
|
DEVELOPMENTAL BIOLOGY
|
| リソース情報 |
| 実験動物マウス |
RBRC02250 |
