1
|
Shen X, Peng X, Guo Y, Dai Z, Cui L, Yu W, Liu Y, Liu CY. YAP/TAZ enhances P-body formation to promote tumorigenesis. eLife 2024; 12:RP88573. [PMID: 39046443 PMCID: PMC11268890 DOI: 10.7554/elife.88573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024] Open
Abstract
The role of processing bodies (P-bodies) in tumorigenesis and tumor progression is not well understood. Here, we showed that the oncogenes YAP/TAZ promote P-body formation in a series of cancer cell lines. Mechanistically, both transcriptional activation of the P-body-related genes SAMD4A, AJUBA, and WTIP and transcriptional suppression of the tumor suppressor gene PNRC1 are involved in enhancing the effects of YAP/TAZ on P-body formation in colorectal cancer (CRC) cells. By reexpression of PNRC1 or knockdown of P-body core genes (DDX6, DCP1A, and LSM14A), we determined that disruption of P-bodies attenuates cell proliferation, cell migration, and tumor growth induced by overexpression of YAP5SA in CRC. Analysis of a pancancer CRISPR screen database (DepMap) revealed co-dependencies between YAP/TEAD and the P-body core genes and correlations between the mRNA levels of SAMD4A, AJUBA, WTIP, PNRC1, and YAP target genes. Our study suggests that the P-body is a new downstream effector of YAP/TAZ, which implies that reexpression of PNRC1 or disruption of P-bodies is a potential therapeutic strategy for tumors with active YAP.
Collapse
Affiliation(s)
- Xia Shen
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Xiang Peng
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - YueGui Guo
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Zhujiang Dai
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Long Cui
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Wei Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan UniversityShanghaiChina
| | - Yun Liu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| | - Chen-Ying Liu
- Department of Colorectal and Anal Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- Shanghai Colorectal Cancer Research CenterShanghaiChina
| |
Collapse
|
2
|
Cormier KW, Larsen B, Gingras AC, Woodgett JR. Interactomes of Glycogen Synthase Kinase-3 Isoforms. J Proteome Res 2023; 22:977-989. [PMID: 36779422 PMCID: PMC9990120 DOI: 10.1021/acs.jproteome.2c00825] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Functional differentiation of the two isoforms of the protein-serine/threonine kinase, glycogen synthase kinase-3 (GSK-3), is an unsettled area of research. The isoforms are highly similar in structure and are largely redundant, though there is also evidence for specific roles. Identification of isoform-specific protein interactors may elucidate the differences in function and provide insight into isoform-selective regulation. We therefore sought to identify novel GSK-3 interaction partners and to examine differences in the interactomes of the two isoforms using both affinity purification and proximity-dependent biotinylation (BioID) mass spectrometry methods. While the interactomes of the two isomers are highly similar in HEK293 cells, BioID in HeLa cells yielded a variety of preys that are preferentially associated with one of the two isoforms. DCP1B, which favored GSK-3α, and MISP, which favored GSK-3β, were evaluated for reciprocal interactions. The differences in interactions between isoforms may help in understanding the distinct functions and regulation of the two isoforms as well as offer avenues for the development of isoform-specific strategies.
Collapse
Affiliation(s)
- Kevin W Cormier
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada
| | - Brett Larsen
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada
| | - Anne-Claude Gingras
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - James R Woodgett
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 1L7, Canada
| |
Collapse
|
3
|
Kaposi's sarcoma-associated herpesvirus (KSHV) utilizes the NDP52/CALCOCO2 selective autophagy receptor to disassemble processing bodies. PLoS Pathog 2023; 19:e1011080. [PMID: 36634147 PMCID: PMC9876383 DOI: 10.1371/journal.ppat.1011080] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 01/25/2023] [Accepted: 12/22/2022] [Indexed: 01/13/2023] Open
Abstract
Kaposi's sarcoma-associated herpesvirus (KSHV) causes the inflammatory and angiogenic endothelial cell neoplasm, Kaposi's sarcoma (KS). We previously demonstrated that the KSHV Kaposin B (KapB) protein promotes inflammation via the disassembly of cytoplasmic ribonucleoprotein granules called processing bodies (PBs). PBs modify gene expression by silencing or degrading labile messenger RNAs (mRNAs), including many transcripts that encode inflammatory or angiogenic proteins associated with KS disease. Although our work implicated PB disassembly as one of the causes of inflammation during KSHV infection, the precise mechanism used by KapB to elicit PB disassembly was unclear. Here we reveal a new connection between the degradative process of autophagy and PB disassembly. We show that both latent KSHV infection and KapB expression enhanced autophagic flux via phosphorylation of the autophagy regulatory protein, Beclin. KapB was necessary for this effect, as infection with a recombinant virus that does not express the KapB protein did not induce Beclin phosphorylation or autophagic flux. Moreover, we showed that PB disassembly mediated by KSHV or KapB, depended on autophagy genes and the selective autophagy receptor NDP52/CALCOCO2 and that the PB scaffolding protein, Pat1b, co-immunoprecipitated with NDP52. These studies reveal a new role for autophagy and the selective autophagy receptor NDP52 in promoting PB turnover and the concomitant synthesis of inflammatory molecules during KSHV infection.
Collapse
|
4
|
Ibayashi M, Aizawa R, Tsukamoto S. mRNA decapping factor Dcp1a is essential for embryonic growth in mice. Biochem Biophys Res Commun 2021; 555:128-133. [PMID: 33813271 DOI: 10.1016/j.bbrc.2021.03.117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 03/20/2021] [Indexed: 10/21/2022]
Abstract
mRNA decapping is a critical step in posttranscriptional regulation of gene expression in eukaryotes. Although Dcp1a is a well characterized and widely conserved mRNA decapping factor, little is known about its physiological function. To extend our understanding of Dcp1a function in vivo, we employed a transgenic rescue strategy to produce Dcp1a-deficient mice using the CRISPR/Cas9 system. This approach arrowed us to generate heterozygous Dcp1a mice and define the phenotype of Dcp1a-deficient embryos. We found that expression of Dcp1a protein, which is detectable in most mouse tissues, was developmentally regulated through embryonic growth, and that depletion of the Dcp1a gene resulted in embryonic lethality around embryonic day 10.5 (E10.5) concomitant with massive growth retardation and cardiac developmental defects. Moreover, the embryonic lethality was fully rescued by transgenic expression of exogenous human Dcp1a. Together, our results suggest that Dcp1a is required for embryonic growth.
Collapse
Affiliation(s)
- Megumi Ibayashi
- Laboratory of Animal and Genome Sciences Section, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Chiba, 263-8555, Japan
| | - Ryutaro Aizawa
- Laboratory of Animal and Genome Sciences Section, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Chiba, 263-8555, Japan
| | - Satoshi Tsukamoto
- Laboratory of Animal and Genome Sciences Section, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Chiba, 263-8555, Japan.
| |
Collapse
|
5
|
ERK1/2: An Integrator of Signals That Alters Cardiac Homeostasis and Growth. BIOLOGY 2021; 10:biology10040346. [PMID: 33923899 PMCID: PMC8072600 DOI: 10.3390/biology10040346] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 12/24/2022]
Abstract
Integration of cellular responses to extracellular cues is essential for cell survival and adaptation to stress. Extracellular signal-regulated kinase (ERK) 1 and 2 serve an evolutionarily conserved role for intracellular signal transduction that proved critical for cardiomyocyte homeostasis and cardiac stress responses. Considering the importance of ERK1/2 in the heart, understanding how these kinases operate in both normal and disease states is critical. Here, we review the complexity of upstream and downstream signals that govern ERK1/2-dependent regulation of cardiac structure and function. Particular emphasis is given to cardiomyocyte hypertrophy as an outcome of ERK1/2 activation regulation in the heart.
Collapse
|
6
|
Wang Y, Wang H, Zhang J, Chu Z, Liu P, Zhang X, Li C, Gu X. Circ_0007031 Serves as a Sponge of miR-760 to Regulate the Growth and Chemoradiotherapy Resistance of Colorectal Cancer via Regulating DCP1A. Cancer Manag Res 2020; 12:8465-8479. [PMID: 32982440 PMCID: PMC7500843 DOI: 10.2147/cmar.s254815] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 08/03/2020] [Indexed: 12/11/2022] Open
Abstract
Background Colorectal cancer (CRC) is a kind of malignant tumor, and the development of chemoradiotherapy resistance (CRR) increases the difficulty of its treatment. The role of circular RNAs (circRNAs) in cancer progression has been well documented. Nevertheless, the function of circ_0007031 in the growth and CRR of CRC has not been well elucidated. Methods CRR cell lines were constructed using 5-Fu and radiation. Cell counting kit 8 (CCK8) assay was employed to measure the 5-Fu resistance and proliferation of cells. Clonogenic assay was used to evaluate the radiation resistance of cells. Also, the expression of circ_0007031 and microRNA-760 (miR-760) was determined using quantitative real-time polymerase chain reaction (qRT-PCR). The cell cycle distribution and apoptosis of cells were assessed by flow cytometry. Besides, the levels of apoptosis-related protein and mRNA-decapping enzyme 1a (DCP1A) protein were measured by Western blot (WB) analysis. Further, dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were used to confirm the interaction between miR-760 and circ_0007031 or DCP1A. In addition, animal experiments were performed to evaluate the function of silenced circ_0007031 on the 5-Fu and radiation resistance of CRC tumors. Results Circ_0007031 expression was markedly increased in CRC tissues and cells, especially in CRC resistant cells. Circ_0007031 knockdown hindered proliferation, induced cell cycle arrest in the G0/G1 phase, enhanced apoptosis, and lowered the CRR of CRC resistant cells. Further, miR-760 could be targeted by circ_0007031, and its inhibitor could reverse the inhibition effect of circ_0007031 knockdown on the growth and CRR of CRC resistant cells. Moreover, DCP1A was a target of miR-760, and its overexpression could invert the suppression effect of miR-760 overexpression on the growth and CRR of CRC resistant cells. Circ_0007031 silencing could enhance the sensitivity of CRC tumors to 5-Fu and radiation to markedly reduce CRC tumor growth in vivo. Conclusion Circ_0007031 might play a positive role in the CRR of CRC through regulating the miR-760/DCP1A axis, which might provide a new approach for treating the CRR of CRC.
Collapse
Affiliation(s)
- Yuanyuan Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, People's Republic of China.,Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Hua Wang
- Department of Pharmacy, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Jian Zhang
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Zhifen Chu
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Pu Liu
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Xing Zhang
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Chao Li
- Department of General Surgery, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Xiaosong Gu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, People's Republic of China
| |
Collapse
|
7
|
Zarnack K, Balasubramanian S, Gantier MP, Kunetsky V, Kracht M, Schmitz ML, Sträßer K. Dynamic mRNP Remodeling in Response to Internal and External Stimuli. Biomolecules 2020; 10:biom10091310. [PMID: 32932892 PMCID: PMC7565591 DOI: 10.3390/biom10091310] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/02/2020] [Accepted: 09/08/2020] [Indexed: 02/06/2023] Open
Abstract
Signal transduction and the regulation of gene expression are fundamental processes in every cell. RNA-binding proteins (RBPs) play a key role in the post-transcriptional modulation of gene expression in response to both internal and external stimuli. However, how signaling pathways regulate the assembly of RBPs with mRNAs remains largely unknown. Here, we summarize observations showing that the formation and composition of messenger ribonucleoprotein particles (mRNPs) is dynamically remodeled in space and time by specific signaling cascades and the resulting post-translational modifications. The integration of signaling events with gene expression is key to the rapid adaptation of cells to environmental changes and stress. Only a combined approach analyzing the signal transduction pathways and the changes in post-transcriptional gene expression they cause will unravel the mechanisms coordinating these important cellular processes.
Collapse
Affiliation(s)
- Kathi Zarnack
- Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, 60438 Frankfurt a.M., Germany;
| | | | - Michael P. Gantier
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC 3168, Australia;
- Department of Molecular and Translational Science, Monash University, Clayton, VIC 3800, Australia
| | - Vladislav Kunetsky
- Institute of Biochemistry, FB08, Justus Liebig University, 35392 Giessen, Germany;
| | - Michael Kracht
- Rudolf Buchheim Institute of Pharmacology, FB11, Justus Liebig University, 35392 Giessen, Germany;
| | - M. Lienhard Schmitz
- Institute of Biochemistry, FB11, Justus Liebig University, 35392 Giessen, Germany;
| | - Katja Sträßer
- Institute of Biochemistry, FB08, Justus Liebig University, 35392 Giessen, Germany;
- Correspondence:
| |
Collapse
|
8
|
Nawalpuri B, Ravindran S, Muddashetty RS. The Role of Dynamic miRISC During Neuronal Development. Front Mol Biosci 2020; 7:8. [PMID: 32118035 PMCID: PMC7025485 DOI: 10.3389/fmolb.2020.00008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/10/2020] [Indexed: 12/17/2022] Open
Abstract
Activity-dependent protein synthesis plays an important role during neuronal development by fine-tuning the formation and function of neuronal circuits. Recent studies have shown that miRNAs are integral to this regulation because of their ability to control protein synthesis in a rapid, specific and potentially reversible manner. miRNA mediated regulation is a multistep process that involves inhibition of translation before degradation of targeted mRNA, which provides the possibility to store and reverse the inhibition at multiple stages. This flexibility is primarily thought to be derived from the composition of miRNA induced silencing complex (miRISC). AGO2 is likely the only obligatory component of miRISC, while multiple RBPs are shown to be associated with this core miRISC to form diverse miRISC complexes. The formation of these heterogeneous miRISC complexes is intricately regulated by various extracellular signals and cell-specific contexts. In this review, we discuss the composition of miRISC and its functions during neuronal development. Neurodevelopment is guided by both internal programs and external cues. Neuronal activity and external signals play an important role in the formation and refining of the neuronal network. miRISC composition and diversity have a critical role at distinct stages of neurodevelopment. Even though there is a good amount of literature available on the role of miRNAs mediated regulation of neuronal development, surprisingly the role of miRISC composition and its functional dynamics in neuronal development is not much discussed. In this article, we review the available literature on the heterogeneity of the neuronal miRISC composition and how this may influence translation regulation in the context of neuronal development.
Collapse
Affiliation(s)
- Bharti Nawalpuri
- Centre for Brain Development and Repair, Institute for Stem Cell Science and Regenerative Medicine (Instem), Bangalore, India.,School of Chemical and Biotechnology, Shanmugha Arts, Science, and Technology and Research Academy (SASTRA) University, Thanjavur, India
| | - Sreenath Ravindran
- Centre for Brain Development and Repair, Institute for Stem Cell Science and Regenerative Medicine (Instem), Bangalore, India.,Manipal Academy of Higher Education, Manipal, India
| | - Ravi S Muddashetty
- Centre for Brain Development and Repair, Institute for Stem Cell Science and Regenerative Medicine (Instem), Bangalore, India
| |
Collapse
|
9
|
Wang Y, Guo W, Tang K, Wang Y, Zan L, Yang W. Bta-miR-34b regulates milk fat biosynthesis by targeting mRNA decapping enzyme 1A (DCP1A) in cultured bovine mammary epithelial cells1. J Anim Sci 2019; 97:3823-3831. [PMID: 31278739 DOI: 10.1093/jas/skz230] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 07/04/2019] [Indexed: 01/24/2023] Open
Abstract
Milk fat is a main nutritional component of milk, and it has become one of the important traits of dairy cow breeding. Recently, there is increasing evidence that microRNAs (miRNA) play significant roles in the process of milk fat synthesis in the mammary gland. Primary bovine mammary epithelial cells (BMEC) were harvested from midlactation cows and cultured in DMEM/F-12 medium with 10% fetal bovine serum, 100 units/mL penicillin, 100 µg/mL streptomycin, 5 µg/mL bovine insulin, 1 µg/mL hydrocortisone, and 2 µg/mL bovine prolactin. We found that miR-34b mimic transfection in BMEC reduced the content of intracellular triacylglycerol (TAG) and lipid droplet accumulation via triacylglycerol assay and Oil Red O staining; meanwhile, overexpression of miR-34b inhibited mRNA expression of lipid metabolism-related genes such as peroxisome proliferator-activated receptor gamma (PPARγ), fatty acid synthase (FASN), fatty acid binding protein 4 (FABP4), and CCAAT enhancer binding protein alpha (C/EBPα). Whereas miR-34b inhibitor resulted in completely opposite results. Furthermore, q-PCR and western blot analysis revealed the mRNA and protein expression levels of DCP1A were downregulated in miR-34b mimic transfection group and upregulated in miR-34b inhibitor group. Moreover, luciferase reporter assays verified that DCP1A was the direct target of miR-34b and DCP1A gene silencing in BMEC-inhibited TAG accumulation and suppressed lipid droplet formation. In conclusion, these findings revealed a novel miR-34b-DCP1A axis that has a significant role in regulating milk fat synthesis and suggested that miR-34b may be used to improve the beneficial ingredients in milk.
Collapse
Affiliation(s)
- Yujuan Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Wenli Guo
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Keqiong Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Yaning Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Wucai Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| |
Collapse
|
10
|
Single nucleotide polymorphisms in piRNA-pathway genes: an insight into genetic determinants of human diseases. Mol Genet Genomics 2019; 295:1-12. [DOI: 10.1007/s00438-019-01612-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/22/2019] [Indexed: 12/23/2022]
|
11
|
Overexpression of mRNA-decapping enzyme 1a predicts disease-specific survival in malignant melanoma. Melanoma Res 2018; 28:30-36. [PMID: 29076924 DOI: 10.1097/cmr.0000000000000406] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Our previous study identified that rs11551405 A allele located at the 3' UTR of mRNA-decapping enzyme 1a (DCP1A) was associated with an increased risk for malignant melanoma (MM). The aim of this study was to investigate whether that association is manifested at the DCP1A expression and whether an altered DCP1A expression can predict disease-specific survival (DSS) of MM patients. The DCP1A expression in specimens of 56 cases of primary MM (23 cases at TNM stage I-II and 33 cases at TNM stage III-IV) and 43 cases of benign nevi (BN) was measured by quantitative RT-PCR (qRT-PCR), immunohistochemistry, and western blotting. The levels of DCP1A expression and the clinical characteristics of the patients were recorded and compared, along with the DSS within the 3 years of follow-up. The average relative mRNA level of DCP1A was significantly (P=0.002) higher in the MM tissues (0.159±0.007) than that shown in the BN tissues (0.122±0.009). The DCP1A immunohistochemistry scores of MM samples (5.55±2.56) were significantly (P<0.001) higher than those of the BN samples (3.58±3.66). Tissue protein levels of DCP1A in MM (0.378±0.021) were much (P<0.05) higher than those in BN tissues (0.265±0.017). Higher DCP1A expression was significantly correlated with shorter DSS time in patients with MM (P<0.05). The multivariate Cox regression analysis revealed that DCP1A expression was an independent prognostic factor for DSS (hazard ratio=1.648, P=0.021). Elevation of DCP1A expression may be an epigenetic contributing factor for oncogenesis of MM, and high DCP1A level may predict an unfavorable prognosis for MM.
Collapse
|
12
|
Wu C, Zhu X, Tao K, Liu W, Ruan T, Wan W, Zhang C, Zhang W. MALAT1 promotes the colorectal cancer malignancy by increasing DCP1A expression and miR203 downregulation. Mol Carcinog 2018; 57:1421-1431. [PMID: 29964337 DOI: 10.1002/mc.22868] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 05/03/2018] [Accepted: 06/28/2018] [Indexed: 12/11/2022]
Abstract
The long non-coding RNA MALAT1 has been proved to promote the cell proliferation, drug resistance, invasion, and metastasis of colorectal cancer (CRC) in vitro and in vivo by regulating the expression of various oncogenes and their protein products. Our previous work discovered that the expression of the mRNA-decapping enzymes 1a (DCP1A) is upregulated in CRCs. However, the relationships between MALAT1 and DCP1A in the development of CRC and the underlying mechanisms are still unclear. In this study, we investigated the molecular mechanisms by which MALAT1 and DCP1A may be linked to contribute to the malignancies of CRCs. We found that DCP1A is a direct target molecule of MALAT1. Moreover, by screening the downstream genes of MALAT1, we noticed that microRNA 203(miR203), an oncogene suppressor in numerous cancers, is inversely correlated to both MALAT1 and DCP1A expressions. Following MALAT1 knockdown, we observed overexpression of miR203 accompanied with DCP1A downregulation to a level that reversed the promoted cell proliferation, invasion, and migration in vitro and in vivo, which could be restored by miR203 knockdown or DCP1A overexpression. These results proposed a new molecular mechanism of MALAT-miR203-DCP1A axis which is involved with the development and contributes to the malignancy of colorectal cancers.
Collapse
Affiliation(s)
- Chuanqing Wu
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaojie Zhu
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kaixiong Tao
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Weizhen Liu
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tuo Ruan
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenze Wan
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun Zhang
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Weikang Zhang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
13
|
Abstract
Processing bodies (P-bodies) are cytoplasmic ribonucleoprotein (RNP) granules primarily composed of translationally repressed mRNAs and proteins related to mRNA decay, suggesting roles in post-transcriptional regulation. P-bodies are conserved in eukaryotic cells and exhibit properties of liquid droplets. However, the function of P-bodies in translational repression and/or mRNA decay remains contentious. Here we review recent advances in our understanding of the molecular composition of P-bodies, the interactions and processes that regulate P-body liquid-liquid phase separation (LLPS), and the cellular localization of mRNA decay machinery, in the context of how these discoveries refine models of P-body function.
Collapse
Affiliation(s)
- Yang Luo
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States.,Chemical Biology Institute , Yale University , West Haven , Connecticut 06516 , United States
| | - Zhenkun Na
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States.,Chemical Biology Institute , Yale University , West Haven , Connecticut 06516 , United States
| | - Sarah A Slavoff
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States.,Chemical Biology Institute , Yale University , West Haven , Connecticut 06516 , United States.,Department of Molecular Biophysics and Biochemistry , Yale University , New Haven , Connecticut 06529 , United States
| |
Collapse
|
14
|
Tenekeci U, Poppe M, Beuerlein K, Buro C, Müller H, Weiser H, Kettner-Buhrow D, Porada K, Newel D, Xu M, Chen ZJ, Busch J, Schmitz ML, Kracht M. K63-Ubiquitylation and TRAF6 Pathways Regulate Mammalian P-Body Formation and mRNA Decapping. Mol Cell 2017; 62:943-957. [PMID: 27315556 DOI: 10.1016/j.molcel.2016.05.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 01/22/2016] [Accepted: 05/13/2016] [Indexed: 01/09/2023]
Abstract
Signals and posttranslational modifications regulating the decapping step in mRNA degradation pathways are poorly defined. In this study we reveal the importance of K63-linked ubiquitylation for the assembly of decapping factors, P-body formation, and constitutive decay of instable mRNAs encoding mediators of inflammation by various experimental approaches. K63-branched ubiquitin chains also regulate IL-1-inducible phosphorylation of the P-body component DCP1a. The E3 ligase TRAF6 binds to DCP1a and indirectly regulates DCP1a phosphorylation, expression of decapping factors, and gene-specific mRNA decay. Mutation of six C-terminal lysines of DCP1a suppresses decapping activity and impairs the interaction with the mRNA decay factors DCP2, EDC4, and XRN1, but not EDC3, thus remodeling P-body architecture. The usage of ubiquitin chains for the proper assembly and function of the decay-competent mammalian decapping complex suggests an additional layer of control to allow a coordinated function of decapping activities and mRNA metabolism in higher eukaryotes.
Collapse
Affiliation(s)
- Ulas Tenekeci
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Michael Poppe
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Knut Beuerlein
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Christin Buro
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Helmut Müller
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Hendrik Weiser
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Daniela Kettner-Buhrow
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Katharina Porada
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Doris Newel
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Ming Xu
- Department of Molecular Biology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA
| | - Zhijian J Chen
- Department of Molecular Biology, Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390-9148, USA
| | - Julia Busch
- Institute of Biochemistry, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - M Lienhard Schmitz
- Institute of Biochemistry, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Michael Kracht
- Rudolf-Buchheim-Institute of Pharmacology, Justus-Liebig-University Giessen, 35392 Giessen, Germany.
| |
Collapse
|
15
|
Zhang W, Liu H, Yin J, Wu W, Zhu D, Amos CI, Fang S, Lee JE, Li Y, Han J, Wei Q. Genetic variants in the PIWI-piRNA pathway gene DCP1A predict melanoma disease-specific survival. Int J Cancer 2016; 139:2730-2737. [PMID: 27578485 DOI: 10.1002/ijc.30409] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 08/12/2016] [Accepted: 08/18/2016] [Indexed: 12/30/2022]
Abstract
The Piwi-piRNA pathway is important for germ cell maintenance, genome integrity, DNA methylation and retrotransposon control and thus may be involved in cancer development. In this study, we comprehensively analyzed prognostic roles of 3,116 common SNPs in PIWI-piRNA pathway genes in melanoma disease-specific survival. A published genome-wide association study (GWAS) by The University of Texas M.D. Anderson Cancer Center was used to identify associated SNPs, which were later validated by another GWAS from the Harvard Nurses' Health Study and Health Professionals Follow-up Study. After multiple testing correction, we found that there were 27 common SNPs in two genes (PIWIL4 and DCP1A) with false discovery rate < 0.2 in the discovery dataset. Three tagSNPs (i.e., rs7933369 and rs508485 in PIWIL4; rs11551405 in DCP1A) were replicated. The rs11551405 A allele, located at the 3' UTR microRNA binding site of DCP1A, was associated with an increased risk of melanoma disease-specific death in both discovery dataset [adjusted Hazards ratio (HR) = 1.66, 95% confidence interval (CI) = 1.21-2.27, p =1.50 × 10-3 ] and validation dataset (HR = 1.55, 95% CI = 1.03-2.34, p = 0.038), compared with the C allele, and their meta-analysis showed an HR of 1.62 (95% CI, 1.26-2.08, p =1.55 × 10-4 ). Using RNA-seq data from the 1000 Genomes Project, we found that DCP1A mRNA expression levels increased significantly with the A allele number of rs11551405. Additional large, prospective studies are needed to validate these findings.
Collapse
Affiliation(s)
- Weikang Zhang
- Department of Medicine, Duke University School of Medicine and Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongliang Liu
- Department of Medicine, Duke University School of Medicine and Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
| | - Jieyun Yin
- Department of Medicine, Duke University School of Medicine and Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.,Department of Epidemiology, School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Wenting Wu
- Department of Epidemiology, Fairbanks School of Public Health, Indiana University, and Indiana University Melvin and Bren Simon Cancer Center, Indianapolis, Indiana
| | - Dakai Zhu
- Community and Family Medicine, Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire
| | - Christopher I Amos
- Community and Family Medicine, Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire
| | - Shenying Fang
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Jeffrey E Lee
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
| | - Yi Li
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan
| | - Jiali Han
- Department of Epidemiology, Fairbanks School of Public Health, Indiana University, and Indiana University Melvin and Bren Simon Cancer Center, Indianapolis, Indiana. .,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts.
| | - Qingyi Wei
- Department of Medicine, Duke University School of Medicine and Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina.
| |
Collapse
|
16
|
Cytoplasmic mRNA turnover and ageing. Mech Ageing Dev 2015; 152:32-42. [PMID: 26432921 PMCID: PMC4710634 DOI: 10.1016/j.mad.2015.09.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 09/17/2015] [Accepted: 09/27/2015] [Indexed: 12/12/2022]
Abstract
We address the cytoplasmic mRNA decay processes that determine the mRNAs half-life. We briefly describe the major, evolutionary conserved, ageing pathways and mechanisms. We summarize critical findings that link mRNA turnover and ageing modulators.
Messenger RNA (mRNA) turnover that determines the lifetime of cytoplasmic mRNAs is a means to control gene expression under both normal and stress conditions, whereas its impact on ageing and age-related disorders has just become evident. Gene expression control is achieved at the level of the mRNA clearance as well as mRNA stability and accessibility to other molecules. All these processes are regulated by cis-acting motifs and trans-acting factors that determine the rates of translation and degradation of transcripts. Specific messenger RNA granules that harbor the mRNA decay machinery or various factors, involved in translational repression and transient storage of mRNAs, are also part of the mRNA fate regulation. Their assembly and function can be modulated to promote stress resistance to adverse conditions and over time affect the ageing process and the lifespan of the organism. Here, we provide insights into the complex relationships of ageing modulators and mRNA turnover mechanisms.
Collapse
|
17
|
Dickey LL, Duncan JK, Hanley TM, Fearns R. Decapping protein 1 phosphorylation modulates IL-8 expression during respiratory syncytial virus infection. Virology 2015; 481:199-209. [PMID: 25796077 DOI: 10.1016/j.virol.2015.02.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 02/17/2015] [Accepted: 02/18/2015] [Indexed: 10/23/2022]
Abstract
Respiratory syncytial virus (RSV) is a negative-strand RNA virus that is an important cause of bronchiolitis and pneumonia. We investigated the effect of RSV infection on the expression patterns of cellular proteins involved in regulating mRNA translation and degradation, and found that a processing-body protein involved in mRNA degradation, decapping protein 1a (DCP1), was phosphorylated rapidly following infection. UV-inactivated and sucrose-purified RSV were sufficient to mediate DCP1 phosphorylation, indicating that it occurs as a consequence of an early event in RSV infection. Analysis using kinase inhibitors showed that RSV-induced DCP1 phosphorylation occurred through the ERK1/2 pathway. The DCP1 phosphorylation sites were limited to serine 315, serine 319, and threonine 321. Overexpression of wt DCP1 led to a decrease in RSV-induced IL-8 production, but this effect was abrogated in cells overexpressing phosphorylation-deficient DCP1 mutants. These results suggest that DCP1 phosphorylation modulates the host chemokine response to RSV infection.
Collapse
Affiliation(s)
- Laura L Dickey
- Department of Microbiology, Boston University, School of Medicine, 72 E. Concord Street, Boston, MA 02118, USA.
| | - Julie K Duncan
- Department of Microbiology, Boston University, School of Medicine, 72 E. Concord Street, Boston, MA 02118, USA.
| | - Timothy M Hanley
- Department of Microbiology, Boston University, School of Medicine, 72 E. Concord Street, Boston, MA 02118, USA.
| | - Rachel Fearns
- Department of Microbiology, Boston University, School of Medicine, 72 E. Concord Street, Boston, MA 02118, USA.
| |
Collapse
|
18
|
Motomura K, Le QTN, Hamada T, Kutsuna N, Mano S, Nishimura M, Watanabe Y. Diffuse decapping enzyme DCP2 accumulates in DCP1 foci under heat stress in Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2015; 56:107-15. [PMID: 25339350 DOI: 10.1093/pcp/pcu151] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The decapping enzymes DCP1 and DCP2 are components of a decapping complex that degrades mRNAs. DCP2 is the catalytic core and DCP1 is an auxiliary subunit. It has been assumed that DCP1 and DCP2 are consistently co-localized in cytoplasmic RNA granules called processing bodies (P-bodies). However, it has not been confirmed whether DCP1 and DCP2 co-localize in Arabidopsis thaliana. In this study, we generated DCP1-green fluorescent protein (GFP) and DCP2-GFP transgenic plants that complemented dcp1 and dcp2 mutants, respectively, to see whether localization of DCP2 is identical to that of DCP1. DCP2 was present throughout the cytoplasm, whereas DCP1 formed P-body-like foci. Use of DCP1-GFP/DCP2-red fluorescent protein (RFP) or DCP1-RFP/DCP2-GFP plants showed that heat treatment induced DCP2 assembly into DCP1 foci. In contrast, cold treatment did not induce DCP2 assembly, while the number of DCP1 foci increased. These changes in DCP1 and DCP2 localization during heat and cold treatments occurred without changes in DCP1 and DCP2 protein abundance. Our results show that DCP1 and DCP2 respond differently to environmental changes, indicating that P-bodies have diverse DCP1 and DCP2 proportions depending on environmental conditions. The localization changes of DCP1 and DCP2 may explain how specific mRNAs are degraded during changes in environmental conditions.
Collapse
Affiliation(s)
- Kazuki Motomura
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902 Japan
| | - Quy T N Le
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902 Japan
| | - Takahiro Hamada
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902 Japan
| | - Natsumaro Kutsuna
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8562 Japan
| | - Shoji Mano
- Department of Cell Biology, National Institute for Basic Biology, Okazaki, 444-8585 Japan Department of Basic Biology, School of Life Science, The Graduate University for Advanced Studies, Okazaki, 444-8585 Japan
| | - Mikio Nishimura
- Department of Cell Biology, National Institute for Basic Biology, Okazaki, 444-8585 Japan Department of Basic Biology, School of Life Science, The Graduate University for Advanced Studies, Okazaki, 444-8585 Japan
| | - Yuichiro Watanabe
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902 Japan
| |
Collapse
|
19
|
Dougherty JD, Reineke LC, Lloyd RE. mRNA decapping enzyme 1a (Dcp1a)-induced translational arrest through protein kinase R (PKR) activation requires the N-terminal enabled vasodilator-stimulated protein homology 1 (EVH1) domain. J Biol Chem 2013; 289:3936-49. [PMID: 24382890 DOI: 10.1074/jbc.m113.518191] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We have shown previously that poliovirus infection disrupts cytoplasmic P-bodies in infected mammalian cells. During the infectious cycle, poliovirus causes the directed cleavage of Dcp1a and Pan3, coincident with the dispersion of P-bodies. We now show that expression of Dcp1a prior to infection, surprisingly, restricts poliovirus infection. This inhibition of infection was independent of P-body formation because expression of GFP-Dcp1a mutants that cannot enter P-bodies restricted poliovirus infection similar to wild-type GFP-Dcp1a. Expression of wild-type or mutant GFP-Dcp1a induced phosphorylation of eIF2α through the eIF2α kinase protein kinase R (PKR). Activation of PKR required the amino-terminal EVH1 domain of Dcp1a. This PKR-induced translational inhibition appears to be specific to Dcp1a because the expression of other P-body components, Pan2, Pan3, Ccr4, or Caf1, did not result in the inhibition of poliovirus gene expression or induce eIF2α phosphorylation. The translation blockade induced by Dcp1a expression suggests novel signaling linking RNA degradation/decapping and regulation of translation.
Collapse
Affiliation(s)
- Jonathan D Dougherty
- From the Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas 77030
| | | | | |
Collapse
|