1
|
Li M, Ren C, Zhou S, He Y, Guo Y, Zhang H, Liu L, Cao Q, Wang C, Huang J, Hu Y, Bai X, Guo X, Shu W, Huo R. Integrative proteome analysis implicates aberrant RNA splicing in impaired developmental potential of aged mouse oocytes. Aging Cell 2021; 20:e13482. [PMID: 34582091 PMCID: PMC8520726 DOI: 10.1111/acel.13482] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 08/18/2021] [Accepted: 09/11/2021] [Indexed: 12/24/2022] Open
Abstract
Aging has many effects on the female reproductive system, among which decreased oocyte quality and impaired embryo developmental potential are the most important factors affecting female fertility. However, the mechanisms underlying oocyte aging are not yet fully understood. Here, we selected normal reproductively aging female mice and constructed a protein expression profile of metaphase II (MII) oocytes from three age groups. A total of 187 differentially expressed (DE) proteins were identified, and bioinformatics analyses showed that these DE proteins were highly enriched in RNA splicing. Next, RNA‐seq was performed on 2‐cell embryos from these three age groups, and splicing analysis showed that a large number of splicing events and genes were discovered at this stage. Differentially spliced genes (DSGs) in the two reproductively aging groups versus the younger group were enriched in biological processes related to DNA damage repair/response. Binding motif analysis suggested that PUF60 might be one of the core splicing factors causing a decline in DNA repair capacity in the subsequent development of oocytes from reproductively aging mice, and changing the splicing pattern of its potential downstream DSG Cdk9 could partially mimic phenotypes in the reproductively aging groups. Taken together, our study suggested that the abnormal expression of splicing regulation proteins in aged MII oocytes would affect the splicing of nascent RNA after zygotic genome activation in 2‐cell embryos, leading to the production of abnormally spliced transcripts of some key genes associated with DNA damage repair/response, thus affecting the developmental potential of aged oocytes.
Collapse
Affiliation(s)
- Mingrui Li
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
- Department of Clinical Nursing, School of Nursing Nanjing Medical University Nanjing China
| | - Chao Ren
- Department of Biotechnology Beijing Institute of Radiation Medicine Beijing China
| | - Shuai Zhou
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Yuanlin He
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Yueshuai Guo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Hao Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Lu Liu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Qiqi Cao
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Congjing Wang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Jie Huang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Yue Hu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Xue Bai
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Xuejiang Guo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| | - Wenjie Shu
- Department of Biotechnology Beijing Institute of Radiation Medicine Beijing China
| | - Ran Huo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology Suzhou Affiliated Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Nanjing China
| |
Collapse
|
2
|
Tibes R, Bogenberger JM. Transcriptional Silencing of MCL-1 Through Cyclin-Dependent Kinase Inhibition in Acute Myeloid Leukemia. Front Oncol 2019; 9:1205. [PMID: 31921615 PMCID: PMC6920180 DOI: 10.3389/fonc.2019.01205] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 10/23/2019] [Indexed: 12/13/2022] Open
Abstract
Acute myeloid leukemia (AML) is the most common adult acute leukemia. Survival remains poor, despite decades of scientific advances. Cytotoxic induction chemotherapy regimens are standard-of-care for most patients. Many investigations have highlighted the genomic heterogeneity of AML, and several new targeted therapeutic options have recently been approved. Additional novel therapies are showing promising clinical results and may rapidly transform the therapeutic landscape of AML. Despite the emerging clinical success of B-cell lymphoma (BCL)-2 targeting in AML and a large body of preclinical data supporting myeloid leukemia cell (MCL)-1 as an attractive therapeutic target for AML, MCL-1 targeting remains relatively unexplored, although novel MCL-1 inhibitors are under clinical investigation. Inhibitors of cyclin-dependent kinases (CDKs) involved in the regulation of transcription, CDK9 in particular, are being investigated in AML as a strategy to target MCL-1 indirectly. In this article, we review the basis for CDK inhibition in oncology with a focus on relevant preclinical mechanism-of-action studies of CDK9 inhibitors in the context of their therapeutic potential specifically in AML.
Collapse
Affiliation(s)
- Raoul Tibes
- NYU School of Medicine & Perlmutter Cancer Center, NYU Langone Health, New York, NY, United States
| | | |
Collapse
|