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Nawrocka PM, Galka-Marciniak P, Urbanek-Trzeciak MO, M-Thirusenthilarasan I, Szostak N, Philips A, Susok L, Sand M, Kozlowski P. Profile of Basal Cell Carcinoma Mutations and Copy Number Alterations - Focus on Gene-Associated Noncoding Variants. Front Oncol 2021; 11:752579. [PMID: 34900699 PMCID: PMC8656283 DOI: 10.3389/fonc.2021.752579] [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: 08/03/2021] [Accepted: 11/08/2021] [Indexed: 11/13/2022] Open
Abstract
Basal cell carcinoma (BCC) of the skin is the most common cancer in humans, characterized by the highest mutation rate among cancers, and is mostly driven by mutations in genes involved in the hedgehog pathway. To date, almost all BCC genetic studies have focused exclusively on protein-coding sequences; therefore, the impact of noncoding variants on the BCC genome is unrecognized. In this study, with the use of whole-exome sequencing of 27 tumor/normal pairs of BCC samples, we performed an analysis of somatic mutations in both protein-coding sequences and gene-associated noncoding regions, including 5'UTRs, 3'UTRs, and exon-adjacent intron sequences. Separately, in each region, we performed hotspot identification, mutation enrichment analysis, and cancer driver identification with OncodriveFML. Additionally, we performed a whole-genome copy number alteration analysis with GISTIC2. Of the >80,000 identified mutations, ~50% were localized in noncoding regions. The results of the analysis generally corroborated the previous findings regarding genes mutated in coding sequences, including PTCH1, TP53, and MYCN, but more importantly showed that mutations were also clustered in specific noncoding regions, including hotspots. Some of the genes specifically mutated in noncoding regions were identified as highly potent cancer drivers, of which BAD had a mutation hotspot in the 3'UTR, DHODH had a mutation hotspot in the Kozak sequence in the 5'UTR, and CHCHD2 frequently showed mutations in the 5'UTR. All of these genes are functionally implicated in cancer-related processes (e.g., apoptosis, mitochondrial metabolism, and de novo pyrimidine synthesis) or the pathogenesis of UV radiation-induced cancers. We also found that the identified BAD and CHCHD2 mutations frequently occur in melanoma but not in other cancers via The Cancer Genome Atlas analysis. Finally, we identified a frequent deletion of chr9q, encompassing PTCH1, and unreported frequent copy number gain of chr9p, encompassing the genes encoding the immune checkpoint ligands PD-L1 and PD-L2. In conclusion, this study is the first systematic analysis of coding and noncoding mutations in BCC and provides a strong basis for further analyses of the variants in BCC and cancer in general.
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Affiliation(s)
- Paulina Maria Nawrocka
- Department of Molecular Genetics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Paulina Galka-Marciniak
- Department of Molecular Genetics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | | | | | - Natalia Szostak
- Laboratory of Bioinformatics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Anna Philips
- Laboratory of Bioinformatics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Laura Susok
- Department of Dermatology, Venereology and Allergology, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Michael Sand
- Department of Dermatology, Venereology and Allergology, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany.,Department of Plastic Surgery, St. Josef Hospital, Catholic Clinics of the Ruhr Peninsula, Essen, Germany Department of Plastic, Reconstructive and Aesthetic Surgery, St. Josef Hospital, Essen, Germany
| | - Piotr Kozlowski
- Department of Molecular Genetics, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
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Deng P, Zhou R, Zhang J, Cao L. Increased Expression of KNSTRN in Lung Adenocarcinoma Predicts Poor Prognosis: A Bioinformatics Analysis Based on TCGA Data. J Cancer 2021; 12:3239-3248. [PMID: 33976733 PMCID: PMC8100810 DOI: 10.7150/jca.51591] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 03/03/2021] [Indexed: 02/03/2023] Open
Abstract
Purpose: Available evidence indicates that kinetochore-localized astrin/SPAG5-binding protein (KNSTRN) is an oncogene in skin carcinoma. This study aimed to evaluate the prognostic value of KNSTRN in lung adenocarcinoma (LUAD) underlying the Cancer Genome Atlas (TCGA) database. Methods: The relationship between clinicopathological features and KNSTRN was analyzed with the Wilcoxon signed-rank test and logistic regression. The clinicopathological characteristics associated with overall survival (OS) were evaluated using Cox regression and the Kaplan-Meier method. Gene ontology (GO) analysis, gene set enrichment analysis (GSEA), and single-sample GSEA (ssGSEA) were performed using TCGA data. Results: The KNSTRN expression level was found to be significantly higher in LUAD tissue than in normal lung tissue. Also, it correlated significantly with advanced clinicopathological characteristics. The Kaplan-Meier survival curve revealed a significant relationship of high expression of KNSTRN with poor OS in patients with LUAD. The multivariate Cox regression hazard model demonstrated the KNSTRN expression level as an independent prognostic factor for patients with LUAD. GO and GSEA analyses indicated the involvement of KNSTRN in cell cycle checkpoints, DNA replication, and G2-M checkpoint M phase. Based on ssGSEA analysis, KNSTRN had a positive relationship with Th2 cells and CD56dim natural killer cells. The KNSTRN expression levels in several types of immune cells were significantly different. Conclusion: The findings suggested that the increased expression level of KNSTRN was significantly associated with the progression of LUAD and could also serve as a novel prognostic biomarker for patients with LUAD.
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Affiliation(s)
- Pengbo Deng
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China.,Hunan Provincial Clinical Research Center for Respiratory Diseases, Changsha, China.,Xiangya Hospital, Central South University, Changsha, China
| | - Rongrong Zhou
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Jinghui Zhang
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China.,Hunan Provincial Clinical Research Center for Respiratory Diseases, Changsha, China.,Xiangya Hospital, Central South University, Changsha, China
| | - Liming Cao
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China.,Hunan Provincial Clinical Research Center for Respiratory Diseases, Changsha, China.,Xiangya Hospital, Central South University, Changsha, China
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Rnf138 deficiency promotes apoptosis of spermatogonia in juvenile male mice. Cell Death Dis 2017; 8:e2795. [PMID: 28518149 PMCID: PMC5520686 DOI: 10.1038/cddis.2017.110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 01/24/2017] [Accepted: 02/01/2017] [Indexed: 11/09/2022]
Abstract
Spermatogenesis, the process by which haploid sperm cells are produced from a diploid precursor cell, is essential for sexual reproduction. Here, we report that RING-finger protein 138 (Rnf138) is highly expressed in testes, especially in spermatogonia and spermatocytes. The role of Rnf138 in spermatogenesis was examined using a Rnf138-knockout mouse model. Rnf138 deficiency resulted in increased apoptosis in spermatogenic cells, loss of proliferative spermatogonia, delayed development of spermatozoa and impaired fertility. The proportion of PLZF+Ki67+ cells within the PLZF+ population decreased in the knockout mice. The phenotype was further assessed by RNA-sequencing (RNA-seq), which determined that the expression levels of many genes involved in spermatogenesis were altered in the testis of Rnf138-knockout mice. Thus, Rnf138 deficiency promotes the apoptosis of spermatogenic cells, which may have been caused by the aberrant proliferation of spermatogonia in mouse testis development.
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SNEV hPrp19/hPso4 Regulates Adipogenesis of Human Adipose Stromal Cells. Stem Cell Reports 2016; 8:21-29. [PMID: 28041875 PMCID: PMC5233435 DOI: 10.1016/j.stemcr.2016.12.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/01/2016] [Accepted: 12/01/2016] [Indexed: 11/26/2022] Open
Abstract
Aging is accompanied by loss of subcutaneous adipose tissue. This may be due to reduced differentiation capacity or deficiency in DNA damage repair (DDR) factors. Here we investigated the role of SNEVhPrp19/hPso4, which was implicated in DDR and senescence evasion, in adipogenic differentiation of human adipose stromal cells (hASCs). We showed that SNEV is induced during adipogenesis and localized both in the nucleus and in the cytoplasm. Knockdown of SNEV perturbed adipogenic differentiation and led to accumulation of DNA damage in hASCs upon oxidative stress. In addition, we demonstrated that SNEV is required for fat deposition in Caenorhabditis elegans. Consequently, we tested other DDR factors and found that WRN is also required for adipogenesis in both models. These results demonstrate that SNEV regulates adipogenesis in hASCs and indicate that DDR capacity in general might be a pre-requisite for this process. SNEV is required for adipogenic differentiation of human adipose stromal cells SNEV modulates pro- and anti-adipogenic signaling pathways SNEV regulates DNA repair capacity of human adipose stromal cells SNEV modulates organismal fat deposition in Caenorhabditis elegans
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Cindric Vranesic A, Reiche J, Hoischen C, Wohlmann A, Bratsch J, Friedrich K, Günes B, Cappallo-Obermann H, Kirchhoff C, Diekmann S, Günes C, Huber O. Characterization of SKAP/kinastrin isoforms: the N-terminus defines tissue specificity and Pontin binding. Hum Mol Genet 2016; 25:2838-2852. [PMID: 27170314 DOI: 10.1093/hmg/ddw140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 04/29/2016] [Accepted: 04/29/2016] [Indexed: 11/14/2022] Open
Abstract
Small Kinetochore-Associated Protein (SKAP)/Kinastrin is a multifunctional protein with proposed roles in mitosis, apoptosis and cell migration. Exact mechanisms underlying its activities in these cellular processes are not completely understood. SKAP is predicted to have different isoforms, however, previous studies did not differentiate between them. Since distinct molecular architectures of protein isoforms often influence their localization and functions, this study aimed to examine the expression profile and functional differences between SKAP isoforms in human and mouse. Analyses of various human tissues and cells of different origin by RT-PCR, and by Western blotting and immunocytochemistry applying newly generated anti-SKAP monoclonal antibodies revealed that human SKAP exists in two protein isoforms: ubiquitously expressed SKAP16 and testis/sperm-specific SKAP1. In mouse, SKAP1 expression is detectable in testis at 4 weeks postnatally, when the first wave of spermatogenesis in mice is complete and the elongated spermatids are present in the testes. Furthermore, we identified Pontin as a new SKAP1 interaction partner. SKAP1 and Pontin co-localized in the flagellar region of human sperm suggesting a functional relevance for SKAP1-Pontin interaction in sperm motility. Since most previous studies on SKAP were performed with the testis-specific isoform SKAP1, our findings provide a new basis for future studies on the role of SKAP in both human somatic cells and male germ cells, including studies on male fertility.
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Affiliation(s)
| | - Juliane Reiche
- Department of Biochemistry II, Jena University Hospital, 07743 Jena, Germany
| | - Christian Hoischen
- Leibniz Institute on Aging - Fritz Lipmann Institute e.V. Jena, 07745 Jena, Germany
| | - Andreas Wohlmann
- Department of Biochemistry II, Jena University Hospital, 07743 Jena, Germany
| | - Jens Bratsch
- Department of Biochemistry II, Jena University Hospital, 07743 Jena, Germany
| | - Karlheinz Friedrich
- Department of Biochemistry II, Jena University Hospital, 07743 Jena, Germany
| | - Berkay Günes
- Leibniz Institute on Aging - Fritz Lipmann Institute e.V. Jena, 07745 Jena, Germany
| | | | - Christiane Kirchhoff
- Department of Andrology, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Stephan Diekmann
- Leibniz Institute on Aging - Fritz Lipmann Institute e.V. Jena, 07745 Jena, Germany
| | - Cagatay Günes
- Department of Urology, University Hospital Ulm, 89075 Ulm, Germany
| | - Otmar Huber
- Department of Biochemistry II, Jena University Hospital, 07743 Jena, Germany
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