1
|
Crespo R, Ne E, Reinders J, Meier JI, Li C, Jansen S, Górska A, Koçer S, Kan TW, Doff W, Dekkers D, Demmers J, Palstra RJ, Rao S, Mahmoudi T. PCID2 dysregulates transcription and viral RNA processing to promote HIV-1 latency. iScience 2024; 27:109152. [PMID: 38384833 PMCID: PMC10879814 DOI: 10.1016/j.isci.2024.109152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 12/06/2023] [Accepted: 02/01/2024] [Indexed: 02/23/2024] Open
Abstract
HIV-1 latency results from tightly regulated molecular processes that act at distinct steps of HIV-1 gene expression. Here, we characterize PCI domain-containing 2 (PCID2) protein, a subunit of the transcription and export complex 2 (TREX2) complex, to enforce transcriptional repression and post-transcriptional blocks to HIV-1 gene expression during latency. PCID2 bound the latent HIV-1 LTR (long terminal repeat) and repressed transcription initiation during latency. Depletion of PCID2 remodeled the chromatin landscape at the HIV-1 promoter and resulted in transcriptional activation and latency reversal. Immunoprecipitation coupled to mass spectrometry identified PCID2-interacting proteins to include negative viral RNA (vRNA) splicing regulators, and PCID2 depletion resulted in over-splicing of intron-containing vRNA in cell lines and primary cells obtained from PWH. MCM3AP and DSS1, two other RNA-binding TREX2 complex subunits, also inhibit transcription initiation and vRNA alternative splicing during latency. Thus, PCID2 is a novel HIV-1 latency-promoting factor, which in context of the TREX2 sub-complex PCID2-DSS1-MCM3AP blocks transcription and dysregulates vRNA processing.
Collapse
Affiliation(s)
- Raquel Crespo
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Enrico Ne
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Julian Reinders
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Jenny I.J. Meier
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Chengcheng Li
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Sanne Jansen
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Alicja Górska
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Selin Koçer
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Tsung Wai Kan
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Wouter Doff
- Proteomics Center, Erasmus University Medical Center, Ee679a PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Dick Dekkers
- Proteomics Center, Erasmus University Medical Center, Ee679a PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Jeroen Demmers
- Proteomics Center, Erasmus University Medical Center, Ee679a PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Robert-Jan Palstra
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Shringar Rao
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Tokameh Mahmoudi
- Department of Biochemistry, Erasmus University Medical Center, Ee622 PO Box 2040, 3000 CA Rotterdam, the Netherlands
- Department of Pathology, Erasmus University Medical Center, Rotterdam, the Netherlands
- Department of Urology, Erasmus University Medical Center, Rotterdam, the Netherlands
| |
Collapse
|
2
|
张 诺, 张 震, 张 雨, 宋 雪, 张 小, 李 静, 左 芦, 胡 建. [PCID2 is highly expressed in gastric cancer and affects the prognosis by regulating cancer cell cycle and proliferation]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2024; 44:324-332. [PMID: 38501418 PMCID: PMC10954517 DOI: 10.12122/j.issn.1673-4254.2024.02.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Indexed: 03/20/2024]
Abstract
OBJECTIVE To investigate the expression of PCI Domain Containing 2 (PCID2) in gastric cancer, its effect on gastric cancer cell cycle and proliferation and the possible molecular mechanisms. METHODS We examined PCID2 expression levels in gastric cancer and adjacent tissues from 100 patients undergoing radical gastrectomy in our hospital between January, 2012 and December, 2016, and analyzed the correlation of PCID2 expression level with cancer progression and postoperative 5-year survival rate of the patients. GO enrichment analysis was performed to identify the possible pathways that mediated the effect of PCID2 in gastric cancer progression. The effects of lentivirus-mediated PCID2 knockdown and overexpression on cell proliferation and cell cycle were analyzed in gastric cancer MGC-803 cells and in nude mice. RESULTS PCID2 was highly expressed in gastric cancer tissues and positively correlated with peripheral blood levels of CA19-9 and CEA (P < 0.01). In gastric cancer patients, a high PCID2 expression was associated with a significantly lowered postoperative 5-year survival rate (P < 0.001) as an independent risk factor for postoperative survival (HR: 2.987, 95% CI: 1.616-5.519). The sensitivity, specificity, and area under the curve of PCID2 for predicting postoperative 5-year survival were 76.74%, 75.44%, and 0.755 (P < 0.001), respectively. GO enrichment analysis suggested that PCID2 was associated with gastric cancer cell cycle progression. PCID2 overexpression in MGC-803 cells significantly promoted cell proliferation, G1/S phase transition, expressions of cyclin D1 and CDK6, and the growth of transplanted xenograft in nude mice (P < 0.05). The expressions of p27 and p16 were significantly lowered in gastric cancer tissues, and their expression levels were negatively regulated by PCID2 expression in MGC-803 cells (P < 0.05). CONCLUSION PCID2 is highly expressed in gastric cancer tissues in close correlation with poor prognosis of the patients. High PCID2 expression promotes gastric cancer proliferation and cell cycle progression by inhibiting the expression of p27 and p16.
Collapse
Affiliation(s)
- 诺 张
- 蚌埠医科大学第一附属医院检验科,安徽 蚌埠 233000Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233000Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 震 张
- 蚌埠医科大学第一附属医院胃肠外科,安徽 蚌埠 233000Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 雨路 张
- 蚌埠医科大学临床医学院,安徽 蚌埠 233000Clinical Medical College, Bengbu Medical University, Bengbu 233000, China
| | - 雪 宋
- 蚌埠医科大学第一附属医院炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233000Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院中心实验室,安徽 蚌埠 233000Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 小凤 张
- 蚌埠医科大学第一附属医院炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233000Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院中心实验室,安徽 蚌埠 233000Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 静 李
- 蚌埠医科大学第一附属医院检验科,安徽 蚌埠 233000Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233000Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 芦根 左
- 蚌埠医科大学第一附属医院胃肠外科,安徽 蚌埠 233000Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233000Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 建国 胡
- 蚌埠医科大学第一附属医院检验科,安徽 蚌埠 233000Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233000Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| |
Collapse
|
3
|
Vdovina YA, Georgieva SG, Kopytova DV. Interaction of mRNA with the C-Terminal Domain of PCID2, a Subunit of the TREX-2 Complex, Is Required for Its Export from the Nucleus to the Cytoplasm in Drosophila melanogaster. DOKL BIOCHEM BIOPHYS 2023; 513:328-331. [PMID: 38066318 PMCID: PMC10810031 DOI: 10.1134/s1607672923700527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 01/26/2024]
Abstract
Following the transcription step, the newly synthesized mRNA is exported from the nucleus to the cytoplasm and further to the translation site. The TREX-2 complex is involved in the step of mRNA export from the nucleus to the cytoplasm. This complex in Drosophila melanogaster consists of four proteins: Xmas-2, PCID2, ENY2, and Sem1p. In our work, we have shown that deletion of the C-terminal sequence of PCID2 leads to a decrease in the interaction of the protein with RNA and to impaired mRNA export from the nucleus to the cytoplasm in D. melanogaster.
Collapse
Affiliation(s)
- Yu A Vdovina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
| | - S G Georgieva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - D V Kopytova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
| |
Collapse
|
4
|
Vdovina YA, Kurshakova MM, Georgieva SG, Kopytova DV. PCID2 Subunit of the Drosophila TREX-2 Complex Has Two RNA-Binding Regions. Curr Issues Mol Biol 2023; 45:5662-5676. [PMID: 37504273 PMCID: PMC10378293 DOI: 10.3390/cimb45070357] [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: 05/31/2023] [Revised: 06/29/2023] [Accepted: 06/29/2023] [Indexed: 07/29/2023] Open
Abstract
Drosophila PCID2 is a subunit of the TREX-2 mRNA nuclear export complex. Although the complex has long been studied in eukaryotes, it is still unclear how TREX-2 interacts with mRNA in multicellular organisms. Here, the interaction between Drosophila PCID2 and the ras2 RNA was studied by EMSA. We show that the C-terminal region of the WH domain of PCID2 specifically binds the 3'-noncoding region of the ras2 RNA. While the same region of PCID2 interacts with the Xmas-2 subunit of the TREX-2 complex, PCID2 interacts with RNA independently of Xmas-2. An additional RNA-binding region (M region) was identified in the N-terminal part of the PCI domain and found to bind RNA nonspecifically. Point mutations of evolutionarily conserved amino acid residues in this region completely abolish the PCID2-RNA interaction, while a deletion of the C-terminal domain only partly decreases it. Thus, the specific interaction of PCID2 with RNA requires nonspecific PCID2-RNA binding.
Collapse
Affiliation(s)
- Yulia A Vdovina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Maria M Kurshakova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Sofia G Georgieva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Daria V Kopytova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| |
Collapse
|