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Shi Y, Wang Z, Zhang J, He P, Yang M, Zhao C, Li B, Qian M. SNRPB promotes osteosarcoma progression via activating ATM signaling pathway through RRM2. THE AMERICAN JOURNAL OF PATHOLOGY 2024:S0002-9440(24)00280-3. [PMID: 39103093 DOI: 10.1016/j.ajpath.2024.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 06/11/2024] [Accepted: 06/28/2024] [Indexed: 08/07/2024]
Abstract
Osteosarcoma is a malignant bone tumor characterized by high metastatic potential and recurrence rates post-therapy. The small nuclear ribonucleoprotein polypeptides B and B1 (SNRPB), a core component of spliceosome, have been reported to exhibit upregulation across several cancer types. However, the precise role of SNRPB in osteosarcoma progression remains poorly elucidated. Herein, we explored SNRPB expression in human osteosarcoma tissues and normal bone tissues by immunohistochemical staining (IHC) staining, revealing a notable upregulation of SNRPB in osteosarcoma, correlating with diminished survival rates. Moreover, the in vitro loss-of-function experiments showed that SNRPB knockdown significantly suppressed the osteosarcoma cell proliferation and migration, as well as tubule formation of HUVECs, while enhancing osteosarcoma cell apoptosis. Mechanistically, we revealed that SNRPB promoted the transcription of ribonucleotide reductase subunit M2 (RRM2) via E2F transcription factor 1 (E2F1). Further rescue experiments indicated that RRM2 was required for SNRPB-induced malignant behaviors in osteosarcoma. Additionally, we confirmed that the function of SNRPB in osteosarcoma cell growth and apoptosis was associated with ATM signaling pathway activation. In conclusion, our findings provide initial insights into the underlying mechanisms governing SNRPB-induced osteosarcoma progression and proposed for SNRPB as a novel therapeutic target in osteosarcoma management.
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Affiliation(s)
- Yongxiang Shi
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine. No. 88 Jiefang Road, Hangzhou 310009, China
| | - Zhan Wang
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine. No. 88 Jiefang Road, Hangzhou 310009, China
| | - Jiahao Zhang
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine. No. 88 Jiefang Road, Hangzhou 310009, China
| | - Peiwen He
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine. No. 88 Jiefang Road, Hangzhou 310009, China
| | - Minglei Yang
- Spinal Tumor Center, Department of Orthopedic Oncology, the Second Affiliated Hospital of Naval Medical University. No. 415 Fengyang Road, Shanghai 200003, China
| | - Chenglong Zhao
- Spinal Tumor Center, Department of Orthopedic Oncology, the Second Affiliated Hospital of Naval Medical University. No. 415 Fengyang Road, Shanghai 200003, China
| | - Bo Li
- Spinal Tumor Center, Department of Orthopedic Oncology, the Second Affiliated Hospital of Naval Medical University. No. 415 Fengyang Road, Shanghai 200003, China
| | - Ming Qian
- Spinal Tumor Center, Department of Orthopedic Oncology, the Second Affiliated Hospital of Naval Medical University. No. 415 Fengyang Road, Shanghai 200003, China.
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2
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Wang X, Zhang H, Guo Z, Wang J, Lu C, Wang J, Jin R, Mo Z. SNRPB promotes the progression of hepatocellular carcinoma via regulating cell cycle, oxidative stress, and ferroptosis. Aging (Albany NY) 2024; 16:348-366. [PMID: 38189879 PMCID: PMC10817389 DOI: 10.18632/aging.205371] [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: 08/22/2023] [Accepted: 11/21/2023] [Indexed: 01/09/2024]
Abstract
Small Nuclear Ribonucleoprotein Polypeptides B and B1 (SNRPB) have been linked to multiple human cancers. However, the mechanism of SNRPB in hepatocellular carcinoma (HCC) and whether SNRPB has a synergistic effect with sorafenib in the treatment of HCC remain unclear. In this study, bioinformatic analysis found that SNRPB was an independent prognostic factor for HCC that exerted a critical effect on the progression of HCC. SNRPB was linked with immune checkpoints, cell cycle, oxidative stress and ferroptosis in HCC. Single cell sequencing analysis found that HCC cell subset with high expression of SNRPB, accounted for a higher proportion in HCC cells with higher stages, had higher expression levels of the genes which promote cell cycle, inhibit oxidative stress and ferroptosis, and had higher cell cycle score, lower oxidative stress score and ferroptosis score. Single-sample gene set enrichment analysis (ssGSEA) analysis found that 17 oxidative stress pathways and 68 oxidative stress-ferroptosis related genes were significantly correlated with SNRPB risk scores. SNRPB knockdown induced cell cycle G2/M arrest and restrained cell proliferation, while downregulated the expression of CDK1, CDK4, and CyclinB1. The combined treatment (SNRPB knockdown+sorafenib) significantly inhibited tumor growth. In addition, the expression of SLC7A11, which is closely-related to ferroptosis, decreased significantly in vitro and in vivo. Therefore, SNRPB may promote HCC progression by regulating immune checkpoints, cell cycle, oxidative stress and ferroptosis, while its downregulation inhibits cell proliferation, which enhances the therapeutic effect of sorafenib, providing a novel basis for the development of HCC therapies.
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Affiliation(s)
- Xiaoyan Wang
- Department of Experimental Teaching Center, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, Guangxi, China
- Key Laboratory of Biochemistry and Molecular Biology, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin 541199, Guangxi, China
| | - Hao Zhang
- Key Laboratory of Biochemistry and Molecular Biology, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin 541199, Guangxi, China
- Department of Biomedical Engineering, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Zehao Guo
- Key Laboratory of Biochemistry and Molecular Biology, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin 541199, Guangxi, China
- Department of Biomedical Engineering, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Junyuan Wang
- Department of Biomedical Engineering, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Chuntao Lu
- Department of Biomedical Engineering, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Junhua Wang
- Department of Biomedical Engineering, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Rongzhong Jin
- Department of Biochemistry, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, Guangxi, China
| | - Zhijing Mo
- Key Laboratory of Biochemistry and Molecular Biology, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin 541199, Guangxi, China
- Department of Biochemistry, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, Guangxi, China
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3
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Li Y, Chen Z, Peng J, Yuan C, Yan S, Yang N, Li P, Kong B. The splicing factor SNRPB promotes ovarian cancer progression through regulating aberrant exon skipping of POLA1 and BRCA2. Oncogene 2023:10.1038/s41388-023-02763-x. [PMID: 37391593 DOI: 10.1038/s41388-023-02763-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 06/08/2023] [Accepted: 06/22/2023] [Indexed: 07/02/2023]
Abstract
Splicing factors play a crucial role in the initiation and development of various human cancers. SNRPB, a core spliceosome component, regulates pre-mRNA alternative splicing. However, its function and underlying mechanism in ovarian cancer remain unclear. This study identified SNRPB as a critical driver of ovarian cancer through TCGA and CPTAC database analysis. SNRPB was highly upregulated in fresh frozen ovarian cancer tissues compared with normal fallopian tubes. Immunohistochemistry revealed that SNRPB expression was increased in formalin-fixed, paraffin-embedded ovarian cancer sections and was positively correlated with a poor prognosis for ovarian cancer. Functionally, SNRPB knockdown suppressed ovarian cancer cell proliferation and invasion, and overexpression exerted opposite effects. SNRPB expression increased after cisplatin treatment, and silencing SNRPB sensitized ovarian cancer cells to cisplatin. KEGG pathway analysis revealed that the differentially expressed genes (DEGs) were mainly enriched in DNA replication and homologous recombination, and almost all DEGs related to DNA replication and homologous recombination were downregulated after SNRPB knockdown according to RNA-seq. Exon 3 skipping of the DEGs DNA polymerase alpha 1 (POLA1) and BRCA2 was induced by SNRPB silencing. Exon 3 skipping of POLA1 yielded premature termination codons and led to nonsense-mediated RNA decay (NMD); exon 3 skipping of BRCA2 led to loss of the PALB2 binding domain, which is necessary for homologous recombination, and increased ovarian cancer cell cisplatin sensitivity. POLA1 or BRCA2 knockdown partially impaired the increased malignancy of SNRPB-overexpressing ovarian cancer cells. Moreover, miR-654-5p was found to reduce SNRPB mRNA expression by directly binding to the SNRPB 3'-UTR. Overall, SNRPB was identified as an important oncogenic driver that promotes ovarian cancer progression by repressing exon 3 skipping of POLA1 and BRCA2. Thus, SNRPB is a potential treatment target and prognostic marker for ovarian cancer.
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Affiliation(s)
- Yingwei Li
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China.
- Medical Integration and Practice Center, Cheeloo College of Medicine, Shandong University, Ji'nan 250012, Shandong Province, China.
- Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Ji'nan 250012, Shandong Province, China.
| | - Zhongshao Chen
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China
- Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Ji'nan 250012, Shandong Province, China
| | - Jiali Peng
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China
- Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Ji'nan 250012, Shandong Province, China
| | - Cunzhong Yuan
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China
- Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Ji'nan 250012, Shandong Province, China
| | - Shi Yan
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China
- Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Ji'nan 250012, Shandong Province, China
| | - Ning Yang
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China
- Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Ji'nan 250012, Shandong Province, China
| | - Peng Li
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China
- Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Ji'nan 250012, Shandong Province, China
| | - Beihua Kong
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Ji'nan 250012, Shandong Province, China.
- Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Ji'nan 250012, Shandong Province, China.
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Samuel RM, Navickas A, Maynard A, Gaylord EA, Garcia K, Bhat S, Majd H, Richter MN, Elder N, Le D, Nguyen P, Shibata B, Llabata ML, Selleri L, Laird DJ, Darmanis S, Goodarzi H, Fattahi F. Generation of Schwann cell derived melanocytes from hPSCs identifies pro-metastatic factors in melanoma. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.06.531220. [PMID: 36945537 PMCID: PMC10028814 DOI: 10.1101/2023.03.06.531220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
The neural crest (NC) is highly multipotent and generates diverse lineages in the developing embryo. However, spatiotemporally distinct NC populations display differences in fate potential, such as increased gliogenic and parasympathetic potential from later migrating, nerve-associated Schwann cell precursors (SCPs). Interestingly, while melanogenic potential is shared by both early migrating NC and SCPs, differences in melanocyte identity resulting from differentiation through these temporally distinct progenitors have not been determined. Here, we leverage a human pluripotent stem cell (hPSC) model of NC temporal patterning to comprehensively characterize human NC heterogeneity, fate bias, and lineage development. We captured the transition of NC differentiation between temporally and transcriptionally distinct melanogenic progenitors and identified modules of candidate transcription factor and signaling activity associated with this transition. For the first time, we established a protocol for the directed differentiation of melanocytes from hPSCs through a SCP intermediate, termed trajectory 2 (T2) melanocytes. Leveraging an existing protocol for differentiating early NC-derived melanocytes, termed trajectory 1 (T1), we performed the first comprehensive comparison of transcriptional and functional differences between these distinct melanocyte populations, revealing differences in pigmentation and unique expression of transcription factors, ligands, receptors and surface markers. We found a significant link between the T2 melanocyte transcriptional signature and decreased survival in melanoma patients in the cancer genome atlas (TCGA). We performed an in vivo CRISPRi screen of T1 and T2 melanocyte signature genes in a human melanoma cell line and discovered several T2-specific markers that promote lung metastasis in mice. We further demonstrated that one of these factors, SNRPB, regulates the splicing of transcripts involved in metastasis relevant functions such as migration, cell adhesion and proliferation. Overall, this study identifies distinct developmental trajectories as a source of diversity in melanocytes and implicates the unique molecular signature of SCP-derived melanocytes in metastatic melanoma.
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Affiliation(s)
- Ryan M. Samuel
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Albertas Navickas
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA
- Current address: Institut Curie, CNRS UMR3348, INSERM U1278, Orsay, France
| | - Ashley Maynard
- Chan Zuckerberg Biohub, San Francisco, CA, USA
- Current address: Department of Biosystems Science and Engineering, ETH Zürich, Basel, Switzerland
| | - Eliza A. Gaylord
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Kristle Garcia
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA
| | - Samyukta Bhat
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Homa Majd
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Mikayla N. Richter
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Nicholas Elder
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Daniel Le
- Chan Zuckerberg Biohub, San Francisco, CA, USA
- Current address: Department of Microchemistry, Proteomics, Lipidomics and Next Generation Sequencing, Genentech Inc, South San Francisco, CA
| | - Phi Nguyen
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA
| | - Bradley Shibata
- Biological Electron Microscopy Facility, University of California, Davis, CA 95616, USA
- Department of Cell Biology and Human Anatomy, School of Medicine, University of California, Davis, CA 95616, USA
| | - Marta Losa Llabata
- Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA 94110, USA
- Current address: Caribou Biosciences, Berkley, CA 94710
| | - Licia Selleri
- Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA 94110, USA
- Department of Orofacial Sciences, University of California San Francisco, San Francisco, CA 94143, USA
- Department of Anatomy, University of California San Francisco, San Francisco, CA 94143, USA
- Institute of Human Genetics, University of California San Francisco, San Francisco, CA 94143, USA
| | - Diana J. Laird
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, 94143, USA
- Department of Obstetrics, Gynecology & Reproductive Sciences, University of California, San Francisco, San Francisco, CA, USA
- Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Spyros Darmanis
- Chan Zuckerberg Biohub, San Francisco, CA, USA
- Current address: Department of Microchemistry, Proteomics, Lipidomics and Next Generation Sequencing, Genentech Inc, South San Francisco, CA
| | - Hani Goodarzi
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA
- Department of Urology, University of California, San Francisco, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA, USA
- Bakar Computational Health Sciences Institute, University of California, San Francisco, San Francisco, CA, USA
| | - Faranak Fattahi
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, 94143, USA
- Program in Craniofacial Biology, University of California, San Francisco, San Francisco, CA 94110, USA
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Guo M, Qiao Y, Lu Y, Zhu L, Zheng L. Squalene epoxidase facilitates cervical cancer progression by modulating tumor protein p53 signaling pathway. J Obstet Gynaecol Res 2023; 49:1383-1392. [PMID: 36843235 DOI: 10.1111/jog.15576] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 01/26/2023] [Indexed: 02/28/2023]
Abstract
BACKGROUND The mortality of cervical cancer (CC) is quite high and advanced CC is hard to cure. Accordingly, to find the mechanism of CC progression at molecular level is imminent. METHODS The mRNA expression data were acquired from The Cancer Genome Atlas database, and squalene epoxidase (SQLE) level in the tumor and adjuvant tissues of CC was analyzed. The pathway enrichment analysis of target mRNAs was performed based on the GSEA database. The cancerous tissues and para-cancerous tissues of CC patients were collected for immunohistochemistry. SQLE and p53 mRNA expression was ensured by qRT-polymerase chain reaction. SQLE and p53 protein levels were determined by western blot. Cell functional assays focused on evaluating the malignant behaviors of cancer cells in each treatment group. Nude mouse xenograft models were constructed for tumorigenicity analysis. RESULTS Bioinformatics analysis revealed that SQLE expression was high in CC tissues, which was linked to the poor prognosis. SQLE could affect the p53 signaling pathway. Cell functional assays demonstrated that SQLE expression was promoted in CC cell lines, and overexpressing SQLE facilitated the malignant phenotypes of CC cells, whereas silencing SQLE suppressed CC progression in vitro and in vivo. Besides, the repressed p53 signaling pathway could reverse the effect caused by silenced SQLE. CONCLUSION SQLE could promote CC progression by modulating the p53 signaling pathway.
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Affiliation(s)
- Minhui Guo
- Department of Gynecology, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, China.,Center for Uterine Cancer Diagnosis & Therapy Research of Zhejiang Province, Hangzhou, China
| | - Yan Qiao
- Department of Radiation Oncology, Huai'an Hospital Affiliated to Xuzhou Medical University, Huai'an Second People's Hospital, Huai'an, Jiangsu, China
| | - Yong Lu
- Department of Gastrointestinal Surgery, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, China
| | - Li Zhu
- Department of Gynecology, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, China.,Center for Uterine Cancer Diagnosis & Therapy Research of Zhejiang Province, Hangzhou, China
| | - Lingzhi Zheng
- Department of Gynecology, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, China.,Center for Uterine Cancer Diagnosis & Therapy Research of Zhejiang Province, Hangzhou, China
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Deng Y, Li X, Jiang W, Tang J. SNRPB promotes cell cycle progression in thyroid carcinoma via inhibiting p53. Open Med (Wars) 2022; 17:1623-1631. [PMID: 36329787 PMCID: PMC9579862 DOI: 10.1515/med-2022-0531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/16/2022] [Accepted: 07/11/2022] [Indexed: 12/12/2022] Open
Abstract
Papillary thyroid carcinoma (PTC) accounts for more than 80% of all thyroid carcinoma cases. Small nuclear ribonucleoprotein polypeptides B and B1 (SNRPB) has been indicated to be carcinogenic in several cancers; however, its function and mechanism in PTC are unclarified. Real time quantitative polymerase chain reaction and western blotting revealed the upregulation of SNRPB and downregulation of tumor protein p53 in PTC tissues compared with the normal tissues. Flow cytometry and western blotting displayed that SNRPB silencing induced cell cycle arrest at G1 phase and suppressed the expression levels of Cyclin family proteins in PTC cells. In vivo experiments suggested that SNRPB silencing inhibited PTC tumor growth in mice. Bioinformatics analysis revealed that the expression of SNRPB and cell cycle-associated genes in thyroid carcinoma tissues is positively correlated. Immunofluorescence staining and co-immunoprecipitation demonstrated that SNRPB directly interacted with p53 and suppressed its expression in PTC cells. In conclusion, SNRPB facilitates cell cycle progression in PTC by inhibiting p53 expression.
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Affiliation(s)
- Yan Deng
- Department of Nuclear Medicine, Wuhan Fifth Hospital, Wuhan, 430050 Hubei, China
| | - Xin Li
- Department of Nuclear Medicine, Wuhan Fifth Hospital, Wuhan, 430050 Hubei, China
| | - Wenlei Jiang
- Department of Emergency, Wuhan Fifth Hospital, Wuhan, 430050 Hubei, China
| | - Jindan Tang
- Department of Nursing, Wuhan Fifth Hospital, No. 122, Xianzheng Street, Hanyang District, Wuhan, 430050 Hubei, China
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7
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Wu J, Lu F, Yu B, Wang W, Ye X. The oncogenic role of SNRPB in human tumors: A pan-cancer analysis. Front Mol Biosci 2022; 9:994440. [PMID: 36275630 PMCID: PMC9582665 DOI: 10.3389/fmolb.2022.994440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/20/2022] [Indexed: 11/19/2022] Open
Abstract
Purpose: The purpose of this study was to explore the oncogenic role of small nuclear ribonucleoprotein polypeptides B and B1 (SNRPB) in human tumors. Materials and methods: Study cases were acquired from The Cancer Genome Atlas database, the Gene Expression Omnibus database, The Human Protein Atlas, and the Clinical Proteomic Tumor Analysis Consortium. We then used the R package and several online tools to analyze and visualize the role of SNRPB across tumors. Results: We found that the expression of SNRPB was significantly increased in 28 of 33 tumors, and higher expression was observed in late pathological and TNM stages. Significantly decreased levels of SNRPB promoter methylation were observed in 12 tumors. SNRPB was found to be a risk factor for decreased overall survival in 10 tumors (p < 0.05), a risk factor for decreased disease-specific survival in 8 tumors (p < 0.05), and a risk factor for decreased progression-free interval in 7 tumors (p < 0.05). The PPI network of SNRPB and the top 100 coexpressed genes revealed that CDK1, CDC6, AURKB, CCNB1, CCNA2, and CDC45 were the most closely interacting genes across tumors. The GO and KEGG enrichment analyses revealed that SNRPB and the above genes were mainly enriched with respect to functions in cell cycle-related genetic material replication, assembly, and distribution. SNRPB was significantly associated with immune cell infiltration and the expression of immunomodulation-related genes in several but not all tumors. Conclusion and limitations: The expression of SNRPB was significantly elevated in almost all tumors, and the decreased promoter methylation level may contribute to the elevated expression of SNRPB. SNRPB may facilitate the progression of pathological and TNM stages and is a risk factor for unfavorable prognosis across tumors. However, our research was based on data obtained from public databases, without further validation of our findings at the cellular and animal levels. Therefore, further studies are needed to clarify the oncogenic mechanism of SNRPB and its potential as a therapeutic target.
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Affiliation(s)
- Juan Wu
- Department of Respiratory Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Feng Lu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Bin Yu
- Department of Respiratory Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wenjun Wang
- Department of Respiratory Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiaoqun Ye
- Department of Respiratory Diseases, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- *Correspondence: Xiaoqun Ye,
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8
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Liu Y, He H, Song Z, Liu Z, Zhu K. Lin-28 Homolog B-Activated Protein Disulfide Isomerase A4 Regulates Cell Proliferation, Migration and Invasion of Glioma. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.3129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The goal of this study is to elucidate the role of protein disulfide isomerase A4 (PDIA4) in glioma, as well as its regulatory mechanism. Cell transfection was performed to adjust the expression level of PDIA4 and RNA-binding protein lin-28 homolog B (LIN28B). The expression of PDIA4
in human astrocytes and glioma cell lines was determined by quantitative real-time PCR and western blot. CCK-8, colony formation, Transwell and wound-healing assays were applied to determine the capabilities of cells to proliferate, invade and migrate. The connection between PDIA4 and LIN28B
was demonstrated by RNA immunoprecipitation (RIP) and RNA pull down assays. As a result, PDIA4 was elevated in glioma. PDIA4 depletion hugely suppressed cell proliferative ability, which was characterized by the reduced cell viability and colony formation, and declined contents of PCNA and
Ki67. Meanwhile, PDIA4 knockdown repressed the cell capabilities to migrate and invade, accompanied with downregulated MMP2 and MMP9. LIN28N was also found to be upregulated in glioma cells, and was verified to bind with PDIA4 and positively regulate PDIA4 expression. Additionally, LIN28B
overexpression partly hindered the suppressive impacts of PDIA4 knockdown on cell abilities to proliferate, migrate and invade. In conclusion, this study delineates that LIN28B-mediated PDIA4 plays a critical role in the progression of glioma.
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Affiliation(s)
- Yang Liu
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, P. R. China
| | - Hua He
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, P. R. China
| | - Zimu Song
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, P. R. China
| | - Zheng Liu
- Department of Neurosurgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, P. R. China
| | - Kai Zhu
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, 750004, P. R. China
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Alam SS, Kumar S, Beauchamp MC, Bareke E, Boucher A, Nzirorera N, Dong Y, Padilla R, Zhang SJ, Majewski J, Jerome-Majewska LA. Snrpb is required in murine neural crest cells for proper splicing and craniofacial morphogenesis. Dis Model Mech 2022; 15:275486. [PMID: 35593225 PMCID: PMC9235875 DOI: 10.1242/dmm.049544] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/05/2022] [Indexed: 12/18/2022] Open
Abstract
Heterozygous mutations in SNRPB, an essential core component of the five small ribonucleoprotein particles of the spliceosome, are responsible for cerebrocostomandibular syndrome (CCMS). We show that Snrpb heterozygous mouse embryos arrest shortly after implantation. Additionally, heterozygous deletion of Snrpb in the developing brain and neural crest cells models craniofacial malformations found in CCMS, and results in death shortly after birth. RNAseq analysis of mutant heads prior to morphological defects revealed increased exon skipping and intron retention in association with increased 5′ splice site strength. We found increased exon skipping in negative regulators of the P53 pathway, along with increased levels of nuclear P53 and P53 target genes. However, removing Trp53 in Snrpb heterozygous mutant neural crest cells did not completely rescue craniofacial development. We also found a small but significant increase in exon skipping of several transcripts required for head and midface development, including Smad2 and Rere. Furthermore, mutant embryos exhibited ectopic or missing expression of Fgf8 and Shh, which are required to coordinate face and brain development. Thus, we propose that mis-splicing of transcripts that regulate P53 activity and craniofacial-specific genes contributes to craniofacial malformations. This article has an associated First Person interview with the first author of the paper. Summary: We report the first mouse model for cerebrocostomandibular syndrome, showing that mis-splicing of transcripts that regulate P53 activity and craniofacial-specific genes contributes to craniofacial malformations.
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Affiliation(s)
- Sabrina Shameen Alam
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1, Canada.,Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Shruti Kumar
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1, Canada.,Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Marie-Claude Beauchamp
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1, Canada
| | - Eric Bareke
- Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Alexia Boucher
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1, Canada.,Department of Anatomy and Cell Biology, McGill University, Montreal, QC H3A 2B2, Canada
| | - Nadine Nzirorera
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1, Canada.,Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Yanchen Dong
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1, Canada.,Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Reinnier Padilla
- Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Si Jing Zhang
- Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Jacek Majewski
- Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Loydie A Jerome-Majewska
- Research Institute of the McGill University Health Centre at Glen Site, Montreal, QC H4A 3J1, Canada.,Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada.,Department of Anatomy and Cell Biology, McGill University, Montreal, QC H3A 2B2, Canada.,Department of Pediatrics, McGill University, Montreal, QC H4A 3J1, Canada
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10
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Comprehensive analysis of expression profiles and prognosis of TRIM genes in human kidney clear cell carcinoma. Aging (Albany NY) 2022; 14:4606-4617. [PMID: 35617983 PMCID: PMC9186766 DOI: 10.18632/aging.204102] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 04/12/2022] [Indexed: 11/25/2022]
Abstract
Objective: To determine survival rates and the underlying mechanism of genes in the TRIM family in Kidney Clear Cell Carcinoma (KIRC). Methods: Transcriptional and survival data of TRIM genes in KIRC patients were retrieved from the UCSC Xena, and GEPIA databases. The function of TRIM genes in KIRC was investigated, focusing on potential ubiquitination, miRNAs regulation, and enrichment analysis. Next, TRIM gene survival values were determined, followed by the development of a survival-related signature. Results: Only TRIM26 was down expressed in the carcinoma tissue and had a survival value in KIRC relative to control tissues, which was supplied by vitro experiment. The patients with lower expression of TRIM26 would have the chance to live a shorter time. SNRPB, which also plays a role in ubiquitination, directly interacted with TRIM26. Moreover, two miRNAs (hsa-let-7i-5p, and hsa-miR-1228-5p) that regulated levels of TRIM26 expression were also identified. Next, we constructed a signature (TRIM4/7/27/58/65/72) and found that high-risk scores of the signature were associated with poor survival rates in KIRC patients. while its resultant risk scores were correlated with immune cell components and markers. Conclusions: TRIM26 was differentially expressed between KIRC and normal tissues and had a survival value in the KIRC. hsa-let-7i-5p/hsa-miR-1228-5p-TRIM26-SNRPB was a potential mechanism axis that may play a role on the KIRC cells. A survival signature (TRIM4/7/27/58/65/72) was successfully established to predict the survival of KIRC patients.
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11
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Liu G, Li F, Chen M, Luo Y, Dai Y, Hou P. SNRPD1/E/F/G Serve as Potential Prognostic Biomarkers in Lung Adenocarcinoma. Front Genet 2022; 13:813285. [PMID: 35356432 PMCID: PMC8959887 DOI: 10.3389/fgene.2022.813285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 02/14/2022] [Indexed: 12/30/2022] Open
Abstract
Objectives: Sm proteins (SNRPB/D1/D2/D3/E/F/G), involved in pre-mRNA splicing, were previously reported in the tumorigenesis of several cancers. However, their specific role in lung adenocarcinoma (LUAD) remains obscure. Our study aims to feature abnormal expressions and mutations of genes for Sm proteins and assess their potential as therapeutic targets via integrated bioinformatics analysis. Methods: In this research, we explored the expression pattern and prognostic worth of genes for Sm proteins in LUAD across TCGA, GEO, UALCAN, Oncomine, Metascape, David 6.8, and Kaplan-Meier Plotter, and confirmed its independent prognostic value via univariate and multivariate cox regression analysis. Meanwhile, their expression patterns were validated by RT-qPCR. Gene mutations and co-expression of genes for Sm proteins were analyzed by the cBioPortal database. The PPI network for Sm proteins in LUAD was visualized by the STRING and Cytoscape. The correlations between genes for Sm proteins and immune infiltration were analyzed by using the “GSVA” R package. Results: Sm proteins genes were found upregulated expression in both LUAD tissues and LUAD cell lines. Moreover, highly expressed mRNA levels for Sm proteins were strongly associated with short survival time in LUAD. Genes for Sm proteins were positively connected with the infiltration of Th2 cells, but negatively connected with the infiltration of mast cells, Th1 cells, and NK cells. Importantly, Cox regression analysis showed that high SNRPD1/E/F/G expression were independent risk factors for the overall survival of LUAD. Conclusion: Our study showed that SNRPD1/E/F/G could independently predict the prognostic outcome of LUAD and was correlated with immune infiltration. Also, this report laid the foundation for additional exploration on the potential treatment target’s role of SNRPD1/E/F/G in LUAD.
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Affiliation(s)
- Gaohua Liu
- Department of Oncology Medicine, Fujian Medical University Union Hospital, Fuzhou, China
| | - Fuping Li
- Department of Clinical Medicine, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Meichun Chen
- Department of Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yang Luo
- Department of Oncology Medicine, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yinhai Dai
- Department of Surgical Oncology Medicine, Second Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, China
- *Correspondence: Yinhai Dai, ; Peifeng Hou,
| | - Peifeng Hou
- Department of Oncology Medicine, Fujian Medical University Union Hospital, Fuzhou, China
- Fujian Medical University Stem Cell Research Institute, Fuzhou, China
- Fujian Key Laboratory of Translational Cancer Medicine, Fuzhou, China
- *Correspondence: Yinhai Dai, ; Peifeng Hou,
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12
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Yang J, Wu Z, Yang L, Jeong JH, Zhu Y, Lu J, Wang B, Wang N, Wang Y, Shen K, Li R. Characterization of Kinesin Family Member 2C as a Proto-Oncogene in Cervical Cancer. Front Pharmacol 2022; 12:785981. [PMID: 35153749 PMCID: PMC8828917 DOI: 10.3389/fphar.2021.785981] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/21/2021] [Indexed: 12/20/2022] Open
Abstract
Kinesin family member 2C (KIF2C) is known as an oncogenic gene to regulate tumor progression and metastasis. However, its pan-cancer analysis has not been reported. In this study, we comprehensively analyzed the characteristics of KIF2C in various cancers. We found that KIF2C was highly expressed and corresponded to a poor prognosis in various cancers. We also found a significant correlation between KIF2C and clinicopathological characteristics, particularly in cervical cancer, which is the most common gynecological malignancy and is the second leading cause of cancer-related deaths among women worldwide. KIF2C mutation is strongly associated with the survival rate of cervical cancer, and KIF2C expression was significantly upregulated in cervical cancer tissues and cervical cancer cells. Moreover, KIF2C promoted cervical cancer cells proliferation, invasion, and migration in vitro and as well increased tumor growth in vivo. KIF2C knockdown promotes the activation of the p53 signaling pathway by regulating the expression of related proteins. The rescue assay with KIF2C and p53 double knockdown partially reversed the inhibitory influence of KIF2C silencing on cervical cancer processes. In summary, our study provided a relatively comprehensive description of KIF2C as an oncogenic gene and suggested KIF2C as a therapeutic target for cervical cancer.
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Affiliation(s)
- Jing Yang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zimeng Wu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Li Yang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan International Joint Laboratory of Ovarian Malignancies, Zhengzhou, China.,Zhengzhou Key Laboratory of Endometrial Disease Prevention and Treatment, Zhengzhou, China
| | - Ji-Hak Jeong
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, Daegu, South Korea
| | - Yuanhang Zhu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jie Lu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Baojin Wang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan International Joint Laboratory of Ovarian Malignancies, Zhengzhou, China
| | - Nannan Wang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yan Wang
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ke Shen
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ruiqing Li
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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13
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Wang H, Xu F, Lu L, Yang F, Huang X, Lv L, Hu H, Jiang Y. The diagnostic and prognostic significance of small nuclear ribonucleoprotein Sm D1 aberrantly high expression in hepatocellular carcinoma. J Cancer 2022; 13:184-201. [PMID: 34976182 PMCID: PMC8692702 DOI: 10.7150/jca.65225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/09/2021] [Indexed: 12/29/2022] Open
Abstract
Small nuclear ribonucleoprotein Sm D1 (SNRPD1), one of the crucial genes encoding core spliceosome components, was abnormally highly expressed in multiple types of tumors. In this study, we investigated the diagnostic and prognostic significance of SNRPD1 in hepatocellular carcinoma (HCC). The investigation of datasets from GEO and TCGA databases revealed that SNRPD1 expression in HCC was significantly higher than adjacent normal liver tissues, which was validated by immunohistochemistry (IHC). Both GO, KEGG analysis showed that the SNRPD1 co-expressed genes mainly enriched in Cell division, Nuclear import, mRNA splicing via spliceosome, Ribosome, Cell cycle, etc. Survival analysis from the GSE14520 dataset and 154 HCC cohorts exhibited a significant association of high SNRPD1 expression with poor overall survival and recurrence-free survival. ROC analysis showed that the abnormally high SNRPD1 mRNA expression has diagnostic significance in distinguishing between HCC and normal liver tissue (AUC = 0.819). Gene set enrichment analysis (GSEA) demonstrated that the high expression of SNRPD1 might regulate HCC tumorigenesis and progression by affecting the cell cycle, mismatch repair, DNA replication, and RNA degradation, etc. The luciferase report assay revealed that SNRPD1 was the direct target gene of miR-100 manifested by decreased SNRPD1 expression and luciferase activity in the HCC cells upon miR-100 overexpression. Finally, SNRPD1 may as an oncogene affecting the progression of HCC through regulates the mTOR pathway and autophagy.
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Affiliation(s)
- Huaxiang Wang
- The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
| | - Fengfeng Xu
- The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
- Department of Hepatobiliary Surgery, 900 Hospital of the Joint Logistic Team, Fuzhou, Fujian 350025, PR China
| | - Lingling Lu
- The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
| | - Fang Yang
- The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
- Department of Hepatobiliary Surgery, 900 Hospital of the Joint Logistic Team, Fuzhou, Fujian 350025, PR China
| | - Xinghua Huang
- The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
- Department of Hepatobiliary Surgery, 900 Hospital of the Joint Logistic Team, Fuzhou, Fujian 350025, PR China
| | - Lizhi Lv
- The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
- Department of Hepatobiliary Surgery, 900 Hospital of the Joint Logistic Team, Fuzhou, Fujian 350025, PR China
| | - Huanzhang Hu
- The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
- Department of Hepatobiliary Surgery, 900 Hospital of the Joint Logistic Team, Fuzhou, Fujian 350025, PR China
| | - Yi Jiang
- The Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, Fujian 350025, PR China
- Department of Hepatobiliary Surgery, 900 Hospital of the Joint Logistic Team, Fuzhou, Fujian 350025, PR China
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14
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Deng Y, Wu J, Li X. lncRNA RUNDC3A-AS1 Regulates Proliferation and Apoptosis of Thyroid Cancer Cells via the miR-151b/SNRPB Axis. Int J Endocrinol 2022; 2022:9433434. [PMID: 35242185 PMCID: PMC8888066 DOI: 10.1155/2022/9433434] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/24/2022] [Indexed: 12/19/2022] Open
Abstract
The number of thyroid cancer (THCA) cases has increased dramatically worldwide. Many previous reports have confirmed that lncRNA is involved in the pathogenesis of THCA. However, the role and mechanism of lncRNA RUNDC3A-AS1 in THCA have not been studied. We intended to explore the effect of RUNDC3A-AS1 on the proliferation and apoptosis of THCA cells. Relative expression levels of RUNDC3A-AS1, microRNA (miR)-151b, and small nuclear ribonucleoprotein polypeptides B and B1 (SNRPB) were examined by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in THCA cells. The localization of RUNDC3A-AS1 in THCA cells was detected by subcellular fractionation assay. The cell proliferation was tested by 5-ethynyl-2'-deoxyuridine (EdU), cell counting kit-8 (CCK-8), and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays. Flow cytometry was used to examine the cell apoptosis capacity. The relationships between RUNDC3A-AS1 and miR-151b or miR-151b and SNRPB were verified by luciferase reporter assay. The protein level was detected by Western blot analysis. RUNDC3A-AS1 exhibited high expression in THCA cells. RUNDC3A-AS1 knockdown suppressed cell proliferation but induced cell apoptosis. Importantly, RUNDC3A-AS1 targeted miR-151b to regulate the SNRPB expression. In rescue assays, SNRPB overexpression partially reversed the suppressive effect of RUNDC3A-AS1 knockdown on cell proliferation and the promotive effect of RUNDC3A-AS1 knockdown on cell apoptosis. The RUNDC3A-AS1/miR-151b/SNRPB axis regulated THCA cell proliferation and apoptosis, which provides novel insight into THCA investigation at the molecular level.
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Affiliation(s)
- Yan Deng
- Department of Nuclear Medicine, Wuhan Fifth Hospital, Wuhan 430050, Hubei, China
| | - Jie Wu
- Department of Laboratory, Hubei No. 3 People's Hospital of Jianghan University, Wuhan 430033, Hubei, China
| | - Xin Li
- Department of Nuclear Medicine, Wuhan Fifth Hospital, Wuhan 430050, Hubei, China
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15
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Li Y, Kardell MB, Wang F, Wang L, Zhu S, Bessho T, Peng A. The Sm core components of small nuclear ribonucleoproteins promote homologous recombination repair. DNA Repair (Amst) 2021; 108:103244. [PMID: 34768043 DOI: 10.1016/j.dnarep.2021.103244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 10/01/2021] [Accepted: 10/29/2021] [Indexed: 11/17/2022]
Abstract
DNA Double strand breaks (DSBs) are highly hazardous to the cell, and are repaired predominantly via non-homologous end joining (NHEJ) and homologous recombination (HR). Using DSB-mimicking DNA templates, our proteomic studies identified a group of Sm core proteins of small nuclear ribonucleoproteins (snRNPs) as potential DSB-associated proteins. We further confirmed that these Sm proteins were recruited to laser-induced DNA damage sites, and co-localized with established DNA damage repair factors. Depletion of Sm-D3 or Sm-B induced accumulation of γ-H2AX, and impaired the repair efficiency of HR, but not NHEJ. Furthermore, disruption of Sm-D3 reduced the protein level of HR factors, especially RAD51 and CHK1, but caused no change in the expression of repair factors involved in NHEJ. Mechanistically, Sm-D3 proteins bound RAD51, suppressed the ubiquitination of RAD51, and mediated the stabilization of RAD51; Sm-D3 depletion particularly impacted the level of RAD51 and CHK1 on damaged chromatin. As such, our studies characterized a role of Sm proteins in HR repair, via a new mechanism that is distinct from their conventional functions in RNA processing and gene regulation, but consistent with their direct recruitment to DNA damage sites and association with repair factors.
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Affiliation(s)
- Yanqiu Li
- Department of Oral Biology, University of Nebraska Medical Center, Lincoln, NE, USA
| | - Mary Bridget Kardell
- Department of Oral Biology, University of Nebraska Medical Center, Lincoln, NE, USA
| | - Feifei Wang
- Department of Oral Biology, University of Nebraska Medical Center, Lincoln, NE, USA
| | - Ling Wang
- Department of Oral Biology, University of Nebraska Medical Center, Lincoln, NE, USA
| | - Songli Zhu
- Department of Oral Biology, University of Nebraska Medical Center, Lincoln, NE, USA
| | - Tadayoshi Bessho
- The Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA
| | - Aimin Peng
- Department of Oral Biology, University of Nebraska Medical Center, Lincoln, NE, USA.
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16
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Liu N, Chen A, Feng N, Liu X, Zhang L. SNRPB is a mediator for cellular response to cisplatin in non-small-cell lung cancer. Med Oncol 2021; 38:57. [PMID: 33835288 DOI: 10.1007/s12032-021-01502-0] [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: 01/06/2021] [Accepted: 03/23/2021] [Indexed: 11/28/2022]
Abstract
The small nuclear ribonucleoprotein polypeptides B And B' (SNRPB) is a core component of spliceosome and plays a key role in pre-mRNA splicing. Emerging evidence suggests that it involves in the development of several types of cancer. Our previous study has demonstrated SNRPB is highly expressed in non-small-cell lung cancer (NSCLC) and functions as an oncogene. However, whether SNRPB contributes to cisplatin resistance in NSCLC is still unknown. In this study, we found that SNRPB negatively regulates cisplatin resistance in NSCLC cells. Knocking out of SNRPB could significantly decrease cisplatin-induced cell growth inhibition, cell cycle arrest and apoptosis in H1299 cells. However, enforced expression of SNRPB in H460 cells can markedly promote cisplatin-induced cell growth inhibition, cell cycle arrest and apoptosis. Our results also indicate that overexpression of SNRPB enhances the inhibitory effects of cisplatin on H460 cell-mediated xenograft tumors. Our results suggest that SNRPB may be a prediction marker for NSCLC patients in response to cisplatin-based chemotherapy.
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Affiliation(s)
- Nianli Liu
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China.
- Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.
| | - Aoxing Chen
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Ning Feng
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Xiaochen Liu
- Yanzhou District, The Affiliated Hospital of Jining Medical University, Jining, China
| | - Longzhen Zhang
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China.
- Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.
- Department of Radiation Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China.
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17
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Zhan YT, Li L, Zeng TT, Zhou NN, Guan XY, Li Y. SNRPB-mediated RNA splicing drives tumor cell proliferation and stemness in hepatocellular carcinoma. Aging (Albany NY) 2020; 13:537-554. [PMID: 33289700 PMCID: PMC7834993 DOI: 10.18632/aging.202164] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 09/28/2020] [Indexed: 12/24/2022]
Abstract
Hepatocellular carcinoma (HCC) is one of the leading malignant diseases worldwide, but therapeutic targets for HCC are lacking. Here, we characterized a significant upregulation of Small Nuclear Ribonucleoprotein Polypeptides B and B1 (SNRPB) in HCC via qRT-PCR, western blotting, tissue microarray and public database analyses. Increased SNRPB expression was positively associated with adjacent organ invasion, tumor size, serum AFP level and poor HCC patient survival. Next, we transfected SNRPB into HCC cells to construct SNRPB-overexpressing cell lines, and short hairpin RNA targeting SNRPB was used to silence SNRPB in HCC cells. Functional studies showed that SNRPB overexpression could promote HCC cell malignant proliferation and stemness maintenance. Inversely, SNRPB knockdown in HCC cells caused inverse effects. Importantly, analysis of alternative splicing by RNA sequencing revealed that SNRPB promoted the formation of AKT3-204 and LDHA-220 splice variants, which activated the Akt pathway and aerobic glycolysis in HCC cells. In conclusion, SNRPB could serve as a prognostic predictor for patients with HCC, and it promotes HCC progression by inducing metabolic reprogramming.
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Affiliation(s)
- Yu-Ting Zhan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, P. R. China
| | - Lei Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, P. R. China.,Department of Clinical Oncology, The University of Hong Kong, Hong Kong 852, P. R. China
| | - Ting-Ting Zeng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, P. R. China
| | - Ning-Ning Zhou
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, P. R. China
| | - Xin-Yuan Guan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, P. R. China.,Department of Clinical Oncology, The University of Hong Kong, Hong Kong 852, P. R. China
| | - Yan Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, P. R. China
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18
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Yang H, He K, Dong W, Fang J, Zhong S, Tang L, Long L. PIM-1 may function as an oncogene in cervical cancer via activating the EGFR signaling. Int J Biol Markers 2020; 35:67-73. [PMID: 32914663 DOI: 10.1177/1724600820936295] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND This work was designed to explore the roles of PIM-1 in the development of cervical cancer. METHODS There were 90 paired cervical tumor samples and the non-tumor adjacent tissue. The levels of PIM-1 in different samples were examined using quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) methods. The potential diagnostic value of PIM-1 was analyzed by the receiver operating characteristic (ROC) curve; furthermore, the expression of EGFR in tumor samples was detected, and Pearson's correlation analysis was performed to analyze the relationship between the expression of PIM-1 and EGFR. Finally, cervical cancer cell line Hela cells were cultured and treated by PIM-1 siRNA, and MTT assay and Pi/Annexin V assay were performed to explore the effects of PIM-1 siRNA on the growth and apoptosis ability of the Hela cells. RESULTS PIM-1 was significantly up-regulated in cervical cancer tissue compared to adjacent tissue, and the expression of PIM-1 in patients with cervical cancer is positively associated with the size and metastasis of the tumor. ROC analysis showed PIM-1 is a sensitive biomarker for the diagnosis of cervical cancer. Furthermore, EGFR was over-expressed in cervical cancer tumor tissues, and the levels of PIM-1 and EGFR in cervical cancer tissue were positively correlated. Finally, PIM-1 siRNA dramatically inhibited the viability and promoted the apoptosis of the Hela cells. CONCLUSION Our findings prove that PIM-1 may function as an oncogene in cervical cancer and can regulate the EGFR signaling in cervical cancer.
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Affiliation(s)
- Hongwen Yang
- Women & Children Health Institute Futian Shenzhen, Shenzhen, China
| | - Kui He
- The Second People's Hospital of Futian District, Shenzhen, China
| | - Weile Dong
- The First Affiliated Hospital of University of South China, Hengyang, China
| | - Jinchuan Fang
- Women & Children Health Institute Futian Shenzhen, Shenzhen, China
| | - Suyun Zhong
- Women & Children Health Institute Futian Shenzhen, Shenzhen, China
| | - Lixia Tang
- Women & Children Health Institute Futian Shenzhen, Shenzhen, China
| | - Lihua Long
- Women & Children Health Institute Futian Shenzhen, Shenzhen, China
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