TY - JOUR
T1 - PARP14 regulates cyclin D1 expression to promote cell-cycle progression
AU - O’Connor, Michael J.
AU - Thakar, Tanay
AU - Nicolae, Claudia M.
AU - Moldovan, George Lucian
N1 - Funding Information:
We would like to thank Drs James Broach, Gregory Yochum, Lisa Shantz, Hein Te Riele, Titia de Lange, Nicholas Dyson, Hong-Gang Wang, Raymond Hohl, Myriam Gorospe, Khandan Keyomarsi, and Peter Sicinski for materials and advice, as well as the Penn State College of Medicine Flow Cytometry core for their assistance with flow cytometry experiments. This work was supported by NIH R01ES026184 (to G-LM).
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Limited.
PY - 2021/7/29
Y1 - 2021/7/29
N2 - Cyclin D1 is an essential regulator of the G1–S cell-cycle transition and is overexpressed in many cancers. Expression of cyclin D1 is under tight cellular regulation that is controlled by many signaling pathways. Here we report that PARP14, a member of the poly(ADP-ribose) polymerase (PARP) family, is a regulator of cyclin D1 expression. Depletion of PARP14 leads to decreased cyclin D1 protein levels. In cells with a functional retinoblastoma (RB) protein pathway, this results in G1 cell-cycle arrest and reduced proliferation. Mechanistically, we found that PARP14 controls cyclin D1 mRNA levels. Using luciferase assays, we show that PARP14 specifically regulates cyclin D1 3′UTR mRNA stability. Finally, we also provide evidence that G1 arrest in PARP14-depleted cells is dependent on an intact p53–p21 pathway. Our work uncovers a new role for PARP14 in promoting cell-cycle progression through both cyclin D1 and the p53 pathway.
AB - Cyclin D1 is an essential regulator of the G1–S cell-cycle transition and is overexpressed in many cancers. Expression of cyclin D1 is under tight cellular regulation that is controlled by many signaling pathways. Here we report that PARP14, a member of the poly(ADP-ribose) polymerase (PARP) family, is a regulator of cyclin D1 expression. Depletion of PARP14 leads to decreased cyclin D1 protein levels. In cells with a functional retinoblastoma (RB) protein pathway, this results in G1 cell-cycle arrest and reduced proliferation. Mechanistically, we found that PARP14 controls cyclin D1 mRNA levels. Using luciferase assays, we show that PARP14 specifically regulates cyclin D1 3′UTR mRNA stability. Finally, we also provide evidence that G1 arrest in PARP14-depleted cells is dependent on an intact p53–p21 pathway. Our work uncovers a new role for PARP14 in promoting cell-cycle progression through both cyclin D1 and the p53 pathway.
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U2 - 10.1038/s41388-021-01881-8
DO - 10.1038/s41388-021-01881-8
M3 - Article
C2 - 34158578
AN - SCOPUS:85108293299
SN - 0950-9232
VL - 40
SP - 4872
EP - 4883
JO - Oncogene
JF - Oncogene
IS - 30
ER -