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De Jaeger-Braet J. Homologous chromosome pairing starts at the ends. PLANT PHYSIOLOGY 2024; 195:2475-2476. [PMID: 38713592 PMCID: PMC11288729 DOI: 10.1093/plphys/kiae247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/09/2024] [Accepted: 04/09/2024] [Indexed: 05/09/2024]
Affiliation(s)
- Joke De Jaeger-Braet
- Assistant Features Editor, Plant Physiology, American Society of Plant Biologists
- Department of Developmental Biology, Institute of Plant Science and Microbiology, University of Hamburg, Hamburg 22609, Germany
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Liu Y, Ouyang L, Jiang S, Liang L, Chen Y, Mao C, Jiang Y, Cong L. PPP2R1A silencing suppresses LUAD progression by sensitizing cells to nelfinavir-induced apoptosis and pyroptosis. Cancer Cell Int 2024; 24:145. [PMID: 38654331 DOI: 10.1186/s12935-024-03321-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 04/05/2024] [Indexed: 04/25/2024] Open
Abstract
Lung adenocarcinoma is a major public health problem with the low 5-year survival rate (15%) among cancers. Aberrant alterations of meiotic genes, which have gained increased attention recently, might contribute to elevated tumor risks. However, systematic and comprehensive studies based on the relationship between meiotic genes and LUAD recurrence and treatment response are still lacking. In this manuscript, we first confirmed that the meiosis related prognostic model (MRPM) was strongly related to LUAD progression via LASSO-Cox regression analyses. Furthermore, we identified the role of PPP2R1A in LUAD, which showed more contributions to LUAD process compared with other meiotic genes in our prognostic model. Additionally, repression of PPP2R1A enhances cellular susceptibility to nelfinavir-induced apoptosis and pyroptosis. Collectively, our findings indicated that meiosis-related genes might be therapeutic targets in LUAD and provided crucial guidelines for LUAD clinical intervention.
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Affiliation(s)
- Yating Liu
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Lianlian Ouyang
- Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
- Department of Dermatology, Hunan Key Laboratory of Medical Epigenomics, Second Xiangya Hospital, Central South University, Changsha, 410011, China
- Research Unit of Key Technologies of Diagnosis and Treatment for Immune-Related Skin Diseases, Chinese Academy of Medical Sciences, Changsha, 410011, China
| | - Shiyao Jiang
- The Key Laboratory of Model Animal and Stem Cell Biology in Hunan Province, Hunan Normal University, Changsha, 410013, Hunan, People's Republic of China
- School of Medicine, Hunan Normal University, Changsha, 410013, Hunan, People's Republic of China
| | - Lu Liang
- The Key Laboratory of Model Animal and Stem Cell Biology in Hunan Province, Hunan Normal University, Changsha, 410013, Hunan, People's Republic of China
- School of Medicine, Hunan Normal University, Changsha, 410013, Hunan, People's Republic of China
| | - Yuanbing Chen
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Chao Mao
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yiqun Jiang
- The Key Laboratory of Model Animal and Stem Cell Biology in Hunan Province, Hunan Normal University, Changsha, 410013, Hunan, People's Republic of China.
- School of Medicine, Hunan Normal University, Changsha, 410013, Hunan, People's Republic of China.
| | - Li Cong
- The Key Laboratory of Model Animal and Stem Cell Biology in Hunan Province, Hunan Normal University, Changsha, 410013, Hunan, People's Republic of China.
- School of Medicine, Hunan Normal University, Changsha, 410013, Hunan, People's Republic of China.
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Abstract
The raison d'être of meiosis is shuffling of genetic information via Mendelian segregation and, within individual chromosomes, by DNA crossing-over. These outcomes are enabled by a complex cellular program in which interactions between homologous chromosomes play a central role. We first provide a background regarding the basic principles of this program. We then summarize the current understanding of the DNA events of recombination and of three processes that involve whole chromosomes: homolog pairing, crossover interference, and chiasma maturation. All of these processes are implemented by direct physical interaction of recombination complexes with underlying chromosome structures. Finally, we present convergent lines of evidence that the meiotic program may have evolved by coupling of this interaction to late-stage mitotic chromosome morphogenesis.
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Affiliation(s)
- Denise Zickler
- Institute for Integrative Biology of the Cell (I2BC), Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Nancy Kleckner
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts, USA;
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