1
|
Yin H, Wu D, Qu Q, Li Z, Zhao L. Ubiquitin-specific peptidase 15 regulates the TFAP4/PCGF1 axis facilitating liver metastasis of colorectal cancer and cell stemness. Biochem Pharmacol 2024; 226:116319. [PMID: 38801926 DOI: 10.1016/j.bcp.2024.116319] [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: 04/12/2024] [Revised: 05/21/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
The tumor recurrence and metastasis of colorectal cancer (CRC) are responsible for most of CRC-linked mortalities. It is an urgent need to deeply investigate the pathogenesis of CRC metastasis and look for novel targets for its treatment. The current study aimed to investigate the effects of ubiquitin-specific peptidase 15 (USP-15) on the CRC progression. In vivo, a mouse model of liver metastasis of CRC tumor was established to investigate the role of USP-15. In vitro, the migrated and invasive abilities of CRC cells were assessed by transwell assay. Cell stemness was evaluated by using sphere formation assay. The underlying mechanism was further explored by employing the co-immunoprecipitation, dual luciferase reporter assay, oligonucleotide pull-down assay, and chromatin immunoprecipitation assay. The results showed that USP-15 was upregulated in CRC patients with liver metastasis and high metastatic potential cell lines of CRC. Loss of USP-15 repressed the epithelial-to-mesenchymal transition (EMT), migration, invasion, and stemness properties of CRC cells in vitro. Downregulation of USP-15 reduced the liver metastasis of mice in vivo. USP-15 upregulation obtained the contrary effects. Subsequently, USP-15 deubiquitinated transcription factor AP-4 (TFAP4) and enhanced its protein stability. TFAP4 could transcriptionally activated polycomb group ring finger 1 (PCGF1). The pro-cancer effects of USP-15 were rescue by the knockdown of TFAP4 or PCGF1. In conclusions: USP-15 facilitated the liver metastasis by the enhancement of cell stemness and EMT in CRC, which was at least partly mediated by the deubiquitination of TFAP4 upon the upregulation of PCGF1.
Collapse
Affiliation(s)
- Hongzhuan Yin
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning, China
| | - Di Wu
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning, China
| | - Qiao Qu
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning, China
| | - Zhilong Li
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning, China
| | - Lianrong Zhao
- Department of Infectious Diseases, Shengjing Hospital of China Medical University, Shenyang, 110004 Liaoning, China.
| |
Collapse
|
2
|
Cheng Y, Chen X, Zhang XQ, Ju PJ, Wang WD, Fang Y, Lin GN, Cui DH. Interaction between RNF4 and SART3 is associated with the risk of schizophrenia. Heliyon 2024; 10:e32743. [PMID: 38975171 PMCID: PMC11226853 DOI: 10.1016/j.heliyon.2024.e32743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 06/03/2024] [Accepted: 06/07/2024] [Indexed: 07/09/2024] Open
Abstract
The pathogenesis of schizophrenia (SCZ) is heavily influenced by genetic factors. Ring finger protein 4 (RNF4) and squamous cell carcinoma antigen recognized by T cells 3 (SART3) are thought to be involved in nervous system growth and development via oxidative stress pathways. Moreover, they have previously been linked to SCZ. Yet the role of RNF4 and SART3 in SCZ remains unclear. Here, we investigated how these two genes are involved in SCZ by studying their variants observed in patients. We first observed significantly elevated mRNA levels of RNF4 and SART3 in the peripheral blood in both first-episode (n = 30) and chronic (n = 30) SCZ patients compared to controls (n = 60). Next, we targeted-sequenced three single nucleotide polymorphisms (SNPs) in SART3 and six SNPs in RNF4 for association with SCZ using the genomic DNA extracted from peripheral blood leukocytes from SCZ participants (n = 392) and controls (n = 572). We observed a combination of SNPs that included rs1203860, rs2282765 (both in RNF4), and rs2287550 (in SART3) was associated with increased risk of SCZ, suggesting common pathogenic mechanisms between these two genes. We then conducted experiments in HEK293T cells to better understand the interaction between RNF4 and SART3. We observed that SART3 lowered the expression of RNF4 through ubiquitination and downregulated the expression of nuclear factor E2-related factor 2 (NRF2), a downstream factor of RNF4, implicating the existence of a possible shared regulatory mechanism for RNF4 and SART3. In conclusion, our study provides evidence that the interaction between RNF4 and SART3 contributes to the risk of SCZ. The findings shed light on the underlying molecular mechanisms of SCZ and may lead to the development of new therapies and interventions for this disorder.
Collapse
Affiliation(s)
- Ying Cheng
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai, China
| | - Xi Chen
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai, China
| | - Xiao Qing Zhang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai, China
| | - Pei Jun Ju
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Di Wang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Division of Imaging, Computational and Systems Biomedicine, School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Yu Fang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai, China
| | - Guan Ning Lin
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Division of Imaging, Computational and Systems Biomedicine, School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Dong Hong Cui
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai, China
- Brain Science and Technology Research Center, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
3
|
Nong J, Yang K, Li T, Lan C, Zhou X, Liu J, Xie H, Luo J, Liao X, Zhu G, Peng T. SART3, regulated by p53, is a biomarker for diagnosis, prognosis and immune infiltration in hepatocellular carcinoma. Aging (Albany NY) 2023; 15:8408-8432. [PMID: 37632835 PMCID: PMC10496991 DOI: 10.18632/aging.204978] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 07/20/2023] [Indexed: 08/28/2023]
Abstract
OBJECTIVE This study aimed to investigate the role of squamous cell carcinoma antigen recognized by T cells 3 (SART3) in hepatocellular carcinoma (HCC). METHODS SART3 expression and prognostic value were analyzed in TCGA and GEO datasets. The diagnostic value and prognostic significance of SART3 were determined using immunohistochemistry in the Guangxi cohort. The whole-exome mutation spectrum of SART3 was analyzed in high and low expression groups in both TCGA and Guangxi cohorts. The biological functions of the SART3 gene were validated through in vitro experiments using small interfering RNA technology to downregulate SART3 expression in HCC cell lines. RESULTS SART3 expression was significantly higher in HCC tissues than in adjacent noncancerous liver tissues in TCGA, GEO and Guangxi cohorts. High expression of SART3 was significantly associated with poor prognosis in HCC patients. In TCGA and Guangxi cohorts, the expression of SART3 in the TP53 mutation group was significantly higher than that in the non-mutation group. Downregulation of SART3 expression significantly inhibited the migration and proliferation of HCC cells. SART3 may be involved mainly in immune infiltration of Th2 cells and macrophages in HCC. Additionally, SART3 can upregulate the expression of immune checkpoints (PD-L1 and TIM-3) and predict potential therapeutic agents for HCC. CONCLUSION The findings of this study demonstrate the diagnostic and prognostic value of SART3 in HCC. SART3 may be associated with immune infiltration of Th2 cells and macrophages in HCC, highlighting its potential role in the development and progression of HCC.
Collapse
Affiliation(s)
- Jusen Nong
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Kejian Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Tianman Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
- Department of Hepatobiliary Surgery, The Sixth Affiliated Hospital of Guangxi Medical University, Yulin 537000, People’s Republic of China
| | - Chenlu Lan
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Xin Zhou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Junqi Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Haixiang Xie
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Jianzhu Luo
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Xiwen Liao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Guangzhi Zhu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| | - Tao Peng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, People’s Republic of China
- Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Guangxi Medical University, Ministry of Education, Nanning 530021, People’s Republic of China
| |
Collapse
|
4
|
Tosti E, Srivastava N, Edelmann W. Vaccination and Microbiota Manipulation Approaches for Colon Cancer Prevention in Rodent Models. Cancer Prev Res (Phila) 2023; 16:429-438. [PMID: 37012205 DOI: 10.1158/1940-6207.capr-23-0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/16/2023] [Accepted: 03/31/2023] [Indexed: 04/05/2023]
Abstract
Colorectal cancer represents the third most common cancer type worldwide and is a leading cause of cancer-related mortality in the United States and Western countries. Rodent models have been invaluable to study the etiology of colorectal cancer and to test novel chemoprevention avenues. In the past, the laboratory mouse has become one of the best preclinical models for these studies due to the availability of genetic information for commonly used mouse strains with well-established and precise gene targeting and transgenic techniques. Well-established chemical mutagenesis technologies are also being used to develop mouse and rat models of colorectal cancer for prevention and treatment studies. In addition, xenotransplantation of cancer cell lines and patient-derived xenografts has been useful for preclinical prevention studies and drug development. This review focuses on the recent use of rodent models to evaluate the utility of novel strategies in the prevention of colon cancers including immune prevention approaches and the manipulation of the intestinal microbiota.
Collapse
Affiliation(s)
- Elena Tosti
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Nityanand Srivastava
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Winfried Edelmann
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| |
Collapse
|
5
|
Timani KA, Rezaei S, Whitmill A, Liu Y, He JJ. Tip110/SART3-Mediated Regulation of NF-κB Activity by Targeting IκBα Stability Through USP15. Front Oncol 2022; 12:843157. [PMID: 35530338 PMCID: PMC9070983 DOI: 10.3389/fonc.2022.843157] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/21/2022] [Indexed: 11/25/2022] Open
Abstract
To date, there are a small number of nuclear-restricted proteins that have been reported to play a role in NF-κB signaling. However, the exact molecular mechanisms are not fully understood. Tip110 is a nuclear protein that has been implicated in multiple biological processes. In a previous study, we have shown that Tip110 interacts with oncogenic ubiquitin specific peptidase 15 (USP15) and that ectopic expression of Tip110 leads to re-distribution of USP15 from the cytoplasm to the nucleus. USP15 is known to regulate NF-κB activity through several mechanisms including modulation of IκBα ubiquitination. These findings prompted us to investigate the role of Tip110 in the NF-κB signaling pathway. We showed that Tip110 regulates NF-κB activity. The expression of Tip110 potentiated TNF-α-induced NF-κB activity and deletion of the nuclear localization domain in Tip110 abrogated this potentiation activity. We then demonstrated that Tip110 altered IκBα phosphorylation and stability in the presence of TNF-α. Moreover, we found that Tip110 and USP15 opposingly regulated NF-κB activity by targeting IκBα protein stability. We further showed that Tip110 altered the expression of NF-κB-dependent proinflammatory cytokines. Lastly, by using whole-transcriptome analysis of Tip110 knockout mouse embryonic stem cells, we found several NF-κB and NF-κB-related pathways were dysregulated. Taken together, these findings add to the nuclear regulation of NF-κB activity by Tip110 through IκBα stabilization and provide new evidence to support the role of Tip110 in controlling cellular processes such as cancers that involve proinflammatory responses.
Collapse
Affiliation(s)
- Khalid Amine Timani
- Department of Microbiology and Immunology, Rosalind Franklin University, Chicago Medical School, North Chicago, IL, United States
- Center for Cancer Cell Biology, Immunology and Infection, Rosalind Franklin University, North Chicago, IL, United States
- School of Graduate and Postdoctoral Studies, Rosalind Franklin University, North Chicago, IL, United States
- *Correspondence: Khalid Amine Timani,
| | - Sahar Rezaei
- Department of Microbiology and Immunology, Rosalind Franklin University, Chicago Medical School, North Chicago, IL, United States
- Center for Cancer Cell Biology, Immunology and Infection, Rosalind Franklin University, North Chicago, IL, United States
- School of Graduate and Postdoctoral Studies, Rosalind Franklin University, North Chicago, IL, United States
| | - Amanda Whitmill
- Department of Microbiology, Immunology, and Genetics, University of North Texas Health Science Center, Fort Worth, TX, United States
| | - Ying Liu
- Department of Microbiology and Immunology, Rosalind Franklin University, Chicago Medical School, North Chicago, IL, United States
- Center for Cancer Cell Biology, Immunology and Infection, Rosalind Franklin University, North Chicago, IL, United States
- School of Graduate and Postdoctoral Studies, Rosalind Franklin University, North Chicago, IL, United States
| | - Johnny J. He
- Department of Microbiology and Immunology, Rosalind Franklin University, Chicago Medical School, North Chicago, IL, United States
- Center for Cancer Cell Biology, Immunology and Infection, Rosalind Franklin University, North Chicago, IL, United States
- School of Graduate and Postdoctoral Studies, Rosalind Franklin University, North Chicago, IL, United States
| |
Collapse
|
6
|
The spliceosome factor sart3 regulates hematopoietic stem/progenitor cell development in zebrafish through the p53 pathway. Cell Death Dis 2021; 12:906. [PMID: 34611130 PMCID: PMC8492694 DOI: 10.1038/s41419-021-04215-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/09/2021] [Accepted: 09/23/2021] [Indexed: 12/27/2022]
Abstract
Hematopoietic stem cells (HSCs) possess the potential for self-renew and the capacity, throughout life, to differentiate into all blood cell lineages. Yet, the mechanistic basis for HSC development remains largely unknown. In this study, we characterized a zebrafish smu471 mutant with hematopoietic stem/progenitor cell (HSPC) defects and found that sart3 was the causative gene. RNA expression profiling of the sart3smu471 mutant revealed spliceosome and p53 signaling pathway to be the most significantly enriched pathways in the sart3smu471 mutant. Knock down of p53 rescued HSPC development in the sart3smu471 mutant. Interestingly, the p53 inhibitor, mdm4, had undergone an alternative splicing event in the mutant. Restoration of mdm4 partially rescued HSPC deficiency. Thus, our data suggest that HSPC proliferation and maintenance require sart3 to ensure the correct splicing and expression of mdm4, so that the p53 pathway is properly inhibited to prevent definitive hematopoiesis failure. This study expands our knowledge of the regulatory mechanisms that impact HSPC development and sheds light on the mechanistic basis and potential therapeutic use of sart3 in spliceosome-mdm4-p53 related disorders.
Collapse
|
7
|
Wang X, Ping C, Tan P, Sun C, Liu G, Liu T, Yang S, Si Y, Zhao L, Hu Y, Jia Y, Wang X, Zhang M, Wang F, Wang D, Yu J, Ma Y, Huang Y. hnRNPLL controls pluripotency exit of embryonic stem cells by modulating alternative splicing of Tbx3 and Bptf. EMBO J 2021; 40:e104729. [PMID: 33349972 PMCID: PMC7883296 DOI: 10.15252/embj.2020104729] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 11/15/2020] [Accepted: 11/16/2020] [Indexed: 11/09/2022] Open
Abstract
The regulatory circuitry underlying embryonic stem (ES) cell self-renewal is well defined, but how this circuitry is disintegrated to enable lineage specification is unclear. RNA-binding proteins (RBPs) have essential roles in RNA-mediated gene regulation, and preliminary data suggest that they might regulate ES cell fate. By combining bioinformatic analyses with functional screening, we identified seven RBPs played important roles for the exit from pluripotency of ES cells. We characterized hnRNPLL, which mainly functions as a global regulator of alternative splicing in ES cells. Specifically, hnRNPLL promotes multiple ES cell-preferred exon skipping events during the onset of ES cell differentiation. hnRNPLL depletion thus leads to sustained expression of ES cell-preferred isoforms, resulting in a differentiation deficiency that causes developmental defects and growth impairment in hnRNPLL-KO mice. In particular, hnRNPLL-mediated alternative splicing of two transcription factors, Bptf and Tbx3, is important for pluripotency exit. These data uncover the critical role of RBPs in pluripotency exit and suggest the application of targeting RBPs in controlling ES cell fate.
Collapse
Affiliation(s)
- Xue Wang
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Department of Medical GeneticsInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Changyun Ping
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Key Laboratory of RNA Regulation and HematopoiesisDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Present address:
Department of PathologyHenan Provincial People's HospitalPeople's Hospital of Zhengzhou UniversityZhengzhouHenanChina
| | - Puwen Tan
- Department of BioinformaticsSchool of Basic Medical SciencesSouthern Medical UniversityGuangzhouChina
| | - Chenguang Sun
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Key Laboratory of RNA Regulation and HematopoiesisDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Guang Liu
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Department of Medical GeneticsInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Tao Liu
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Department of Obstetrics and GynecologyThe Third Affiliated Hospital of Chongqing Medical University (General Hospital)ChongqingChina
| | - Shuchun Yang
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Department of Medical GeneticsInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Yanmin Si
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Key Laboratory of RNA Regulation and HematopoiesisDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Lijun Zhao
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Key Laboratory of RNA Regulation and HematopoiesisDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Yongfei Hu
- Department of BioinformaticsSchool of Basic Medical SciencesSouthern Medical UniversityGuangzhouChina
| | - Yuyan Jia
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Department of Medical GeneticsInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Xiaoshuang Wang
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Key Laboratory of RNA Regulation and HematopoiesisDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Meili Zhang
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Department of Medical GeneticsInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Fang Wang
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Key Laboratory of RNA Regulation and HematopoiesisDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Dong Wang
- Department of BioinformaticsSchool of Basic Medical SciencesSouthern Medical UniversityGuangzhouChina
- Dermatology HospitalSouthern Medical UniversityGuangzhouChina
- Center for Informational BiologyUniversity of Electronic Science and Technology of ChinaChengduChina
| | - Jia Yu
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Key Laboratory of RNA Regulation and HematopoiesisDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Yanni Ma
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Key Laboratory of RNA Regulation and HematopoiesisDepartment of Biochemistry and Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| | - Yue Huang
- State Key Laboratory of Medical Molecular BiologyInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
- Department of Medical GeneticsInstitute of Basic Medical SciencesChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina
| |
Collapse
|
8
|
Zhang Y, Xu J, Xu Z, Wang Y, Wu S, Wu L, Song H, Zhou L. Expression of vimentin and Oct-4 in gallbladder adenocarcinoma and their relationship with vasculogenic mimicry and their clinical significance. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:3618-3627. [PMID: 31949742 PMCID: PMC6962874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/28/2018] [Indexed: 06/10/2023]
Abstract
Vimentin (a marker of epithelial-mesenchymal transition), and Oct-4 (a marker of cancer stem cells) are predicative biomarkers for identifying malignant cell invasion and metastasis. Vasculogenic mimicry (VM), a newly discovered tumor characteristic that is common in highly invasive malignancies, is considered to be an important factor in evaluating the prognosis and metastasis of many malignancies. The following paper analyzes the correlation between vimentin, Oct-4, and VM in gallbladder adenocarcinoma (GBAC) specimens using immunohistochemistry in an attempt to elucidate the survival and clinicopathological parameters of changes in vimentin, Oct-4, and VM. Briefly, significantly higher positive expression rates of vimentin, Oct-4, and VM were observed in GBAC tissues than in the corresponding para-carcinoma tissues. In addition, the levels of vimentin, Oct-4, and VM were positively correlated with tumor grade, lymph node metastasis (LNM), infiltration of the surrounding tissues (STI), and tumor-node-metastasis (TNM) stage, as well as inversely with a patient's overall survival (OS) time. Moreover, the analysis of multiple factors shows that high vimentin, Oct-4, and VM levels, STI, and LNM as well as TNM stage were potential and significant factors for OS time in patients with GBAC. To sum up, the positive expression of vimentin, Oct-4, and VM may be undesirable factors for metastasis, invasion and prognosis, as well as effective therapeutic targets for GBAC.
Collapse
Affiliation(s)
- Yu Zhang
- Department of Pathology, The First Affiliated Hospital of Bengbu Medical UniversityAnhui Province, China
- Department of Pathology, Bengbu Medical UniversityAnhui Province, China
| | - Jing Xu
- Department of Pathology, The First Affiliated Hospital of Bengbu Medical UniversityAnhui Province, China
- Department of Pathology, Bengbu Medical UniversityAnhui Province, China
| | - Zhouyi Xu
- Department of Pathology, The First Affiliated Hospital of Bengbu Medical UniversityAnhui Province, China
- Department of Pathology, Bengbu Medical UniversityAnhui Province, China
| | - Yichao Wang
- Department of Pathology, The First Affiliated Hospital of Bengbu Medical UniversityAnhui Province, China
- Department of Pathology, Bengbu Medical UniversityAnhui Province, China
| | - Shiwu Wu
- Department of Pathology, The First Affiliated Hospital of Bengbu Medical UniversityAnhui Province, China
- Department of Pathology, Bengbu Medical UniversityAnhui Province, China
| | - Lu Wu
- Department of Pathology, The First Affiliated Hospital of Bengbu Medical UniversityAnhui Province, China
- Department of Pathology, Bengbu Medical UniversityAnhui Province, China
| | - Hong Song
- Department of Pathology, The First Affiliated Hospital of Bengbu Medical UniversityAnhui Province, China
- Department of Pathology, Bengbu Medical UniversityAnhui Province, China
| | - Lei Zhou
- Department of Pathology, Bengbu Medical UniversityAnhui Province, China
| |
Collapse
|
9
|
Liu Y, Huang X, Timani KA, Broxmeyer HE, He JJ. Regulation of Constitutive Tip110 Expression in Human Cord Blood CD34 + Cells Through Selective Usage of the Proximal and Distal Polyadenylation Sites Within the 3'Untranslated Region. Stem Cells Dev 2018; 27:566-576. [PMID: 29583087 DOI: 10.1089/scd.2017.0197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Tip110 plays important roles for stem cell pluripotency and hematopoiesis. However, little is known about the regulatory mechanisms of Tip110 expression in this process. In this study, we first showed that constitutive Tip110 expression was cell proliferation and differentiation dependent and self-regulated in both human cord blood CD34+ cells. Using a series of molecular techniques, we found that ectopic Tip110 expression led to increased constitutive Tip110 expression through its 3'-untranslated region (3'UTR), specifically through preferential usage of proximal polyadenylation sites within its 3'UTR in cells, including human cord blood CD34+ cells, which indeed led to an increased number of CD34+ cells during differentiation of those cells. Lastly, we showed that Tip110 protein interacted with cleavage stimulation factor 64 (CstF64) protein and that more CstF64 was recruited to the promixal polyadenylation site than the distal polyadenylation site within its 3'UTR. These finding together demonstrates that constitutive Tip110 expression is regulated, at least in part, through its interaction with CstF64, recruitment of CstF64 to, and selective usage of those two polyadenylation sites within its 3'UTR.
Collapse
Affiliation(s)
- Ying Liu
- 1 Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center , Fort Worth, Texas
| | - Xinxin Huang
- 2 Department of Microbiology and Immunology, Indiana University , Indianapolis, Indiana
| | - Khalid A Timani
- 1 Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center , Fort Worth, Texas
| | - Hal E Broxmeyer
- 2 Department of Microbiology and Immunology, Indiana University , Indianapolis, Indiana
| | - Johnny J He
- 1 Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center , Fort Worth, Texas
| |
Collapse
|
10
|
miRNA regulation of Tip110 expression and self-renewal and differentiation of human CD34+ hematopoietic cells. Oncotarget 2017; 9:4823-4832. [PMID: 29435144 PMCID: PMC5797015 DOI: 10.18632/oncotarget.23572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 12/14/2017] [Indexed: 01/20/2023] Open
Abstract
Tip110 expression regulates hematopoiesis, but the regulatory mechanisms during hematopoiesis are not fully understood. There are a number of putative microRNA (miRNA) binding sites identified within the Tip110 3′ untranslated region (3′UTR). In this study, we determined the relationship among Tip110 miRNA, Tip110 expression and self-renewal and differentiation of human CD34+ hematopoietic cells. Using a Tip110 3UTR-based reporter gene assay, 11 miRNA showed the specific activity toward the Tip110 3′UTR and down-regulated constitutive Tip110 mRNA expression. When human cord blood CD34+ cells were differentiated, Tip110 mRNA expression showed significant decreases. Concurrently, five miRNA showed significant increases, five miRNA showed significant decreases, and one miRNA remained unchanged. To further assess the roles of miRNA in Tip110 expression and self-renewal and differentiation of human CD34+ hematopoietic cells, human cord blood CD34+ cells were transduced to express the full-length Tip110 3′UTR RNA. Expression of the Tip110 3′UTR RNA led to significant increases of Tip110 mRNA, and the number of hematopoietic stem cells and progenitor cells. Taken together, these results show important roles of Tip110 miRNA in Tip110 expression control and Tip110 regulation of hematopoiesis and offer a possibility of using Tip110 miRNA or 3′UTR as a strategy to maintain human CD34+ hematopoietic cells.
Collapse
|
11
|
Belanova AA, Smirnov DS, Makarenko MS, Belousova MM, Mashkina EV, Aleksandrova AA, Soldatov AV, Zolotukhin PV. Individual expression features of GPX2, NQO1 and SQSTM1 transcript variants induced by hydrogen peroxide treatment in HeLa cells. Genet Mol Biol 2017; 40:515-524. [PMID: 28558074 PMCID: PMC5488449 DOI: 10.1590/1678-4685-gmb-2016-0005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 11/22/2016] [Indexed: 12/24/2022] Open
Abstract
Pathway activity assessment-based approaches are becoming highly influential in various fields of biology and medicine. However, these approaches mostly rely on analysis of mRNA expression, and total mRNA from a given locus is measured in the majority of cases. Notably, a significant portion of protein-coding genes produces more than one transcript. This biological fact is responsible for significant noise when changes in total mRNA transcription of a single gene are analyzed. The NFE2L2/AP-1 pathway is an attractive target for biomedical applications. To date, there is a lack of data regarding the agreement in expression of even classical target genes of this pathway. In the present paper we analyzed whether transcript variants of GPX2, NQO1 and SQSTM1 were characterized by individual features of expression when HeLa cells were exposed to pro-oxidative stimulation with hydrogen peroxide. We found that all the transcripts (10 in total) appeared to be significantly individually regulated under the conditions tested. We conclude that individual transcripts, rather than total mRNA, are best markers of pathway activation. We also discuss here some biological roles of individual transcript regulation.
Collapse
Affiliation(s)
- Anna A Belanova
- Evolution Corporate Group, Cell Physiology Laboratory, Southern Federal University, Rostov-on-Don, Russia
| | - Dmitry S Smirnov
- Evolution Corporate Group, Cell Physiology Laboratory, Southern Federal University, Rostov-on-Don, Russia
| | - Maxim S Makarenko
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Mariya M Belousova
- Department of English Language for Natural Sciences Faculties, Southern Federal University, Rostov-on-Don, Russia
| | - Elena V Mashkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Anzhela A Aleksandrova
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Alexander V Soldatov
- Department of Nanosystems Physics and Spectroscopy, Southern Federal University, Rostov-on-Don, Russia
| | - Peter V Zolotukhin
- Evolution Corporate Group, Cell Physiology Laboratory, Southern Federal University, Rostov-on-Don, Russia
| |
Collapse
|
12
|
Whitmill A, Liu Y, Timani KA, Niu Y, He JJ. Tip110 Deletion Impaired Embryonic and Stem Cell Development Involving Downregulation of Stem Cell Factors Nanog, Oct4, and Sox2. Stem Cells 2017; 35:1674-1686. [PMID: 28436127 DOI: 10.1002/stem.2631] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 03/09/2017] [Accepted: 03/21/2017] [Indexed: 12/21/2022]
Abstract
HIV-1 Tat-interacting protein of 110 kDa, Tip110, plays important roles in multiple biological processes. In this study, we aimed to characterize the function of Tip110 in embryonic development. Transgenic mice lacking expression of a functional Tip110 gene (Tip110-/- ) died post-implantation, and Tip110-/- embryos exhibited developmental arrest between 8.5 and 9.5 days post coitum. However, in vitro cultures of Tip110-/- embryos showed that Tip110 loss did not impair embryo growth from the zygote to the blastocyst. Extended in vitro cultures of Tip110-/- blastocysts showed that Tip110 loss impaired both blastocyst outgrowth and self-renewal and survival of blastocyst-derived embryonic stem cells. Microarray analysis of Tip110-/- embryonic stem cells revealed that Tip110 loss altered differentiation, pluripotency, and cycling of embryonic stem cells and was associated with downregulation of several major stem cell factors including Nanog, Oct4, and Sox2 through a complex network of signaling pathways. Taken together, these findings document for the first time the lethal effects of complete loss of Tip110 on mammalian embryonic development and suggest that Tip110 is an important regulator of not only embryonic development but also stem cell factors. Stem Cells 2017;35:1674-1686.
Collapse
Affiliation(s)
- Amanda Whitmill
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Ying Liu
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Khalid Amine Timani
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Yinghua Niu
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, Texas, USA
| | - Johnny J He
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, Texas, USA
| |
Collapse
|
13
|
Role of Tat-interacting protein of 110 kDa and microRNAs in the regulation of hematopoiesis. Curr Opin Hematol 2016; 23:325-30. [PMID: 27071021 DOI: 10.1097/moh.0000000000000246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Hematopoiesis is regulated by cellular factors including transcription factors, microRNAs, and epigenetic modifiers. Understanding how these factors regulate hematopoiesis is pivotal for manipulating them to achieve their desired potential. In this review, we will focus on HIV-1 Tat-interacting protein of 110 kDa (Tip110) and its regulation of hematopoiesis. RECENT FINDINGS There are several pathways in hematopoiesis that involve Tip110 regulation. Tip110 is expressed in human cord blood CD34 cells; its expression decreases when CD34 cells begin to differentiate. Tip110 is also expressed in mouse marrow hematopoietic stem cells (HSC) and hematopoietic progenitor cells (HPC). Tip110 expression increases the number, survival, and cell cycling of HPC. Tip110-mediated regulation of hematopoiesis has been linked to its reciprocal control of proto-oncogene expression. Small noncoding microRNAs (miRs) have been shown to play important roles in regulation of hematopoiesis. miR-124 specifically targets 3'-untranslated region of Tip110 and subsequently regulates Tip110 expression in HSC. SUMMARY Our recent findings for manipulating expression levels of Tip110 in HSC and HPC could be useful for expanding HSC and HPC and for improving engraftment of cord blood HSC/HPC.
Collapse
|
14
|
Emerging landscape of cell penetrating peptide in reprogramming and gene editing. J Control Release 2016; 226:124-37. [DOI: 10.1016/j.jconrel.2016.02.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 01/31/2016] [Accepted: 02/01/2016] [Indexed: 12/11/2022]
|
15
|
Whitmill A, Timani KA, Liu Y, He JJ. Tip110: Physical properties, primary structure, and biological functions. Life Sci 2016; 149:79-95. [PMID: 26896687 DOI: 10.1016/j.lfs.2016.02.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 02/11/2016] [Accepted: 02/15/2016] [Indexed: 12/11/2022]
Abstract
HIV-1 Tat-interacting protein of 110kDa (Tip110), also referred to as squamous cell carcinoma antigen recognized by T cells 3 (Sart3), p110 or p110(nrb), was initially identified as a cDNA clone (KIAA0156) without annotated functions. Over the past twenty years, several functions have been attributed to this protein. The proposed biological functions include roles for Tip110 in pre-mRNA splicing, gene transcription, stem cell biology, and development. Dysregulation of Tip110 is also a contributing factor in the development of cancer and other human diseases. It is clear that our understanding of this protein is rapidly evolving. In this review, we aimed to provide a summary of all the existing literature on this gene/protein and its proposed biological functions.
Collapse
Affiliation(s)
- Amanda Whitmill
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States
| | - Khalid Amine Timani
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States
| | - Ying Liu
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States
| | - Johnny J He
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, Fort Worth, TX 76107, United States.
| |
Collapse
|
16
|
Prindull G. Potential Gene Interactions in the Cell Cycles of Gametes, Zygotes, Embryonic Stem Cells and the Development of Cancer. Front Oncol 2015; 5:200. [PMID: 26442212 PMCID: PMC4585297 DOI: 10.3389/fonc.2015.00200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 08/31/2015] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES This review is to explore whether potential gene interactions in the cell cycles of gametes, zygotes, and embryonic stem (ES) cells are associated with the development of cancer. METHODS MEDPILOT at the Central Library of the University of Cologne, Germany (Zentralbibliothek Köln) that covers 5,800 international medical journals and 4,300 E-journals was used to collect data. The initial searches were done in December 2012 and additional searches in October 2013-May 2015. The search terms included "cancer development," "gene interaction," and "ES cells," and the time period was between 1998 and 2015. A total of 147 articles in English language only were included in this review. RESULTS Transgenerational gene translation is implemented in the zygote through interactions of epigenetic isoforms of transcription factors (TFs) from parental gametes, predominantly during the first two zygote cleavages. Pluripotent transcription factors may provide interacting links with mutated genes during zygote-to-ES cell switches. Translation of post-transcriptional carcinogenic genes is implemented by abnormally spliced, tumor-specific isoforms of gene-encoded mRNA/non-coding RNA variants of TFs employing de novo gene synthesis and neofunctionalization. Post-translationally, mutated genes are preserved in pre-neoplastic ES cell subpopulations that can give rise to overt cancer stem cells. Thus, TFs operate as cell/disease-specific epigenetic messengers triggering clinical expression of neoplasms. CONCLUSION Potential gene interactions in the cell cycle of gametes, zygotes, and ES cells may play some roles in the development of cancer.
Collapse
Affiliation(s)
- Gregor Prindull
- Medical Faculty, University of Göttingen , Göttingen , Germany
| |
Collapse
|
17
|
Liu Y, Liu J, Wang Z, He JJ. Tip110 binding to U6 small nuclear RNA and its participation in pre-mRNA splicing. Cell Biosci 2015. [PMID: 26203351 PMCID: PMC4511435 DOI: 10.1186/s13578-015-0032-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background RNA–protein interactions play important roles in gene expression control. These interactions are mediated by several recurring RNA-binding motifs including a well-known and characterized ribonucleoprotein motif or so-called RNA recognition motif (RRM). Results In the current study, we set out to identify the RNA ligand(s) of a RRM-containing protein Tip110, also known as p110nrb, SART3, or p110, using a RNA-based yeast three-hybrid cloning strategy. Six putative RNA targets were isolated and found to contain a consensus sequence that was identical to nucleotides 34–46 of U6 small nuclear RNA. Tip110 binding to U6 was confirmed to be specific and RRM-dependent in an electrophoretic mobility shift assay. Both in vitro pre-mRNA splicing assay and in vivo splicing-dependent reporter gene assay showed that the pre-mRNA splicing was correlated with Tip110 expression. Moreover, Tip110 was found in the spliceosomes containing pre-spliced pre-mRNA and spliced mRNA products. Nonetheless, the RRM-deleted mutant (ΔRRM) that did not bind to U6 showed promotion in vitro pre-mRNA splicing, whereas the nuclear localization signal (NLS)-deleted mutant ΔNLS that bound to U6 promoted the pre-mRNA splicing both in vitro and in vivo. Lastly, RNA-Seq analysis confirmed that Tip110 regulated a number of gene pre-mRNA splicing including several splicing factors. Conclusions Taken together, these results demonstrate that Tip110 is directly involved in constitutive eukaryotic pre-mRNA splicing, likely through its binding to U6 and regulation of other splicing factors, and provide further evidence to support the global roles of Tip110 in regulation of host gene expression.
Collapse
Affiliation(s)
- Ying Liu
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107 USA
| | - Jinfeng Liu
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107 USA ; Department of Infectious Diseases, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an, 710061 Shaanxi China
| | - Zenyuan Wang
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107 USA ; Department of Forensic Science, College of Medicine, Xi'an Jiaotong University, Xi'an, 710061 Shaanxi China
| | - Johnny J He
- Department of Cell Biology and Immunology, Graduate School of Biomedical Sciences, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107 USA
| |
Collapse
|
18
|
Tip110 Regulates the Cross Talk between p53 and Hypoxia-Inducible Factor 1α under Hypoxia and Promotes Survival of Cancer Cells. Mol Cell Biol 2015; 35:2254-64. [PMID: 25939381 DOI: 10.1128/mcb.00001-15] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 04/06/2015] [Indexed: 12/30/2022] Open
Abstract
Hypoxia often occurs under various physiological and pathophysiological conditions, including solid tumors; it is linked to malignant transformation, metastatic progression, and treatment failure or resistance. Tip110 protein plays important roles in several known physiological and pathophysiological processes, including cancers. Thus, in the present study we investigated the regulation of Tip110 expression under hypoxia. Hypoxia led to Tip110 protein degradation through the ubiquitin-proteasome system. Under hypoxia, Tip110 stabilized p53, which in return destabilized Tip110. In addition, Tip110 regulated hypoxia-inducible factor 1α (HIF-1α), likely through enhancement of its protein stability. Furthermore, Tip110 upregulated p300, a known coactivator for both p53 and HIF-1α. Expression of a p53(22/23) mutant deficient in p300 binding accelerated Tip110 degradation under hypoxia. Tip110 knockdown resulted in the inhibition of cell proliferation and cell death in the presence of p53. Finally, significantly less Tip110, p53, and HIF-1α was detected in the hypoxic region of bone metastasis tumors in a mouse model of human melanoma cells. Taken together, these results suggest Tip110 is an important mediator in the cross talk between p53 and HIF-1α in response to hypoxic stress.
Collapse
|
19
|
Chen C, Meng F, Wan H, Zhou Q. [Interaction between microRNAs and OCT4]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2015; 18:55-8. [PMID: 25603874 PMCID: PMC5999741 DOI: 10.3779/j.issn.1009-3419.2015.01.09] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OCT4基因是POU转录因子家族中的一员,它能与含八聚体基序(ATGCAAAT)的DNA结合。OCT4是一个关键的转录因子,在未分化胚胎干细胞中参与维持多能性和自我更新性,在许多种癌症包括肺癌、生殖细胞肿瘤、乳腺癌、宫颈癌、前列腺癌、胃癌、肝癌和卵巢癌中过表达。MicroRNAs(miRNAs)是一种小的非编码RNA,通过和靶基因mRNA碱基配对来调控mRNA表达,降解mRNA或阻碍蛋白合成。一些miRNAs被证实在癌细胞中调控干细胞因子如OCT4、NANOG、SOX2和KLF4,进而调控癌细胞的增殖、凋亡、分化、抗药性和免疫性。
Collapse
Affiliation(s)
- Chen Chen
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenviroment, Tianjin Lung Cancer Institute,
Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Fanrong Meng
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenviroment, Tianjin Lung Cancer Institute,
Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Haisu Wan
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenviroment, Tianjin Lung Cancer Institute,
Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Qinghua Zhou
- Tianjin Key Laboratory of Lung Cancer Metastasis and Tumor Microenviroment, Tianjin Lung Cancer Institute,
Tianjin Medical University General Hospital, Tianjin 300052, China
| |
Collapse
|
20
|
Regulation of neuronal survival and morphology by the E3 ubiquitin ligase RNF157. Cell Death Differ 2014; 22:626-42. [PMID: 25342469 DOI: 10.1038/cdd.2014.163] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 08/19/2014] [Accepted: 08/29/2014] [Indexed: 01/03/2023] Open
Abstract
Neuronal health is essential for the long-term integrity of the brain. In this study, we characterized the novel E3 ubiquitin ligase ring finger protein 157 (RNF157), which displays a brain-dominant expression in mouse. RNF157 is a homolog of the E3 ligase mahogunin ring finger-1, which has been previously implicated in spongiform neurodegeneration. We identified RNF157 as a regulator of survival in cultured neurons and established that the ligase activity of RNF157 is crucial for this process. We also uncovered that independently of its ligase activity, RNF157 regulates dendrite growth and maintenance. We further identified the adaptor protein APBB1 (amyloid beta precursor protein-binding, family B, member 1 or Fe65) as an interactor and proteolytic substrate of RNF157 in the control of neuronal survival. Here, the nuclear localization of Fe65 together with its interaction partner RNA-binding protein SART3 (squamous cell carcinoma antigen recognized by T cells 3 or Tip110) is crucial to trigger apoptosis. In summary, we described that the E3 ligase RNF157 regulates important aspects of neuronal development.
Collapse
|
21
|
Abstract
Embryonic stem cell maintenance, differentiation, and somatic cell reprogramming require the interplay of multiple pluripotency factors, epigenetic remodelers, and extracellular signaling pathways. RNA-binding proteins (RBPs) are involved in a wide range of regulatory pathways, from RNA metabolism to epigenetic modifications. In recent years we have witnessed more and more studies on the discovery of new RBPs and the assessment of their functions in a variety of biological systems, including stem cells. We review the current studies on RBPs and focus on those that have functional implications in pluripotency, differentiation, and/or reprogramming in both the human and mouse systems.
Collapse
|
22
|
Timani KA, Liu Y, Suvannasankha A, He JJ. Regulation of ubiquitin-proteasome system-mediated Tip110 protein degradation by USP15. Int J Biochem Cell Biol 2014; 54:10-9. [PMID: 24984263 DOI: 10.1016/j.biocel.2014.06.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 06/16/2014] [Accepted: 06/19/2014] [Indexed: 10/25/2022]
Abstract
Tip110 is a nuclear protein and has been shown to function in tumor antigenicity, regulation of gene transcription, pre-mRNA splicing, stem cell proliferation and differentiation, and embryonic development. To characterize the in vivo functions of Tip110, a transgene cassette expressing human Tip110 protein (hTip110) was used to generate hTip110 transgenic (Tg) mice. Unexpectedly, only Tip110 mRNA but not Tip110 protein was expressed in Tg MEF and tissues. Treatment of Tg MEF with proteasome inhibitors led to detection of hTip110 protein, which prompted us to investigate the regulatory mechanisms of Tip110 degradation in mouse cells. We found that hTip110 was more sensitive to ubiquitin-proteasome system (UPS)-mediated protein degradation than mouse Tip110 (mTip110), likely resulting from more hTip110 ubiquitination. Using affinity chromatography and proteomics, we identified USP15, a deubiquitinating enzyme, to be associated with Tip110. Tip110 expression led to re-distribution of USP15 from the cytoplasm to the nucleus and complete co-localization of Tip110 with USP15 in the nucleus, whereas USP15 expression resulted in hTip110 deubiquitination. Interestingly, USP15 knockdown restored hTip110 protein expression in Tg MEF and USP15 expression had little effects. Taken together, these results provide insights into the regulatory mechanism of human Tip110 degradation by USP15.
Collapse
Affiliation(s)
- Khalid Amine Timani
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA.
| | - Ying Liu
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| | - Attaya Suvannasankha
- Division of Hematology and Oncology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Johnny J He
- Department of Cell Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA
| |
Collapse
|
23
|
Mahapatra PS, Bag S. Reprogramming of buffalo (Bubalus bubalis) foetal fibroblasts with avian egg extract for generation of pluripotent stem cells. Res Vet Sci 2014; 96:292-8. [DOI: 10.1016/j.rvsc.2014.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Revised: 01/06/2014] [Accepted: 02/09/2014] [Indexed: 01/12/2023]
|
24
|
Zhao W, Liu Y, Timani KA, He JJ. Tip110 protein binds to unphosphorylated RNA polymerase II and promotes its phosphorylation and HIV-1 long terminal repeat transcription. J Biol Chem 2013; 289:190-202. [PMID: 24217245 DOI: 10.1074/jbc.m113.529784] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Transcription plays an important role in both HIV-1 gene expression and replication and mandates complicated but coordinated interactions between the host and virus. Our previous studies have shown that an HIV-1 Tat-interacting protein of 110 kDa, Tip110, binds to and enhances Tat function in Tat-mediated HIV-1 gene transcription and replication (Liu, Y., Li, J., Kim, B. O., Pace, B. S., and He, J. J. (2002) HIV-1 Tat protein-mediated transactivation of the HIV-1 long terminal repeat promoter is potentiated by a novel nuclear Tat-interacting protein of 110 kDa, Tip110. J. Biol. Chem. 277, 23854-23863). However, the underlying molecular mechanisms by which this takes place were not understood. In this study, we demonstrated that Tip110 bound to unphosphorylated RNA polymerase II (RNAPII) in a direct and specific manner. In addition, we detected Tip110 at the HIV-1 long terminal repeat (LTR) promoter and found that Tip110 expression was associated with increased phosphorylation of serine 2 of the heptapeptide repeats within the RNAPII C-terminal domain and increased recruitment of positive transcription elongation factor b to the LTR promoter. Consistent with these findings, we showed that Tip110 interaction with Tat directly enhanced transcription elongation of the LTR promoter. Taken together, these findings have provided additional and mechanistic evidence to support Tip110 function in HIV-1 transcription.
Collapse
Affiliation(s)
- Weina Zhao
- From the Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana 46202 and
| | | | | | | |
Collapse
|
25
|
Timani KA, Liu Y, He JJ. Tip110 interacts with YB-1 and regulates each other's function. BMC Mol Biol 2013; 14:14. [PMID: 23822148 PMCID: PMC3716619 DOI: 10.1186/1471-2199-14-14] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 07/02/2013] [Indexed: 12/02/2022] Open
Abstract
Background Tip110 plays important roles in tumor immunobiology, pre-mRNA splicing, expression regulation of viral and host genes, and possibly protein turnover. It is clear that our understanding of Tip110 biological function remains incomplete. Results Herein, we employed an immunoaffinity-based enrichment approach combined with protein mass spectrometry and attempted to identify Tip110-interacting cellular proteins. A total of 13 major proteins were identified to be complexed with Tip110. Among them was Y-box binding protein 1 (YB-1). The interaction of Tip110 with YB-1 was further dissected and confirmed to be specific and involve the N-terminal of both Tip110 and YB-1 proteins. A HIV-1 LTR promoter-driven reporter gene assay and a CD44 minigene in vivo splicing assay were chosen to evaluate the functional relevance of the Tip110/YB-1 interaction. We showed that YB-1 potentiates the Tip110/Tat-mediated transactivation of the HIV-1 LTR promoter while Tip110 promotes the inclusion of the exon 5 in CD44 minigene alternative splicing. Conclusions Tip110 and YB-1 interact to form a complex and mutually regulate each other’s biological functions.
Collapse
|