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Liu F, Zhang T, Sun X, Liu Z, Xu W, Dai X, Zhang X. Deficiency in SPOP-mediated ubiquitination and degradation of TIAM1 promotes gastric cancer progression. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167032. [PMID: 38246227 DOI: 10.1016/j.bbadis.2024.167032] [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: 09/05/2023] [Revised: 12/29/2023] [Accepted: 01/15/2024] [Indexed: 01/23/2024]
Abstract
It was well known that SPOP is highly mutated in various cancers especially the prostate cancer and SPOP mutation dramatically impaired its tumor suppressive function. However, the detailed role and underlying mechanisms of SPOP in regulating the growth of gastric cancer is not fully studied. Here, we found that Cullin3SPOP promoted the ubiquitination and degradation of TIAM1 protein in gastric cancer setting. Gastric cancer and prostate cancer derived SPOP mutation failed to suppress the proliferation, migration and invasion of gastric cancer cells partially due to the elevated level of TIAM1 protein. Notably, SPOP protein were negatively associated with TIAM1 protein in human gastric cancer tissue specimens. In conclusion, our results elucidate a molecular mechanism by which SPOP regulates the stability of TIAM1, and further demonstrate that SPOP inhibits the progression of gastric cancer by promoting the ubiquitination and degradation of TIAM1 protein.
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Affiliation(s)
- Fang Liu
- Department of Emergency, First Hospital of Jilin University, Changchun, China
| | - Tong Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital of Jilin University, Changchun, China; National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital of Jilin University, Changchun, China
| | - Xiumei Sun
- Department of Emergency, First Hospital of Jilin University, Changchun, China
| | - Zuolong Liu
- Department of Emergency, First Hospital of Jilin University, Changchun, China
| | - Wei Xu
- Department of The Clinical Laboratory, First Hospital of Jilin University, Changchun, China.
| | - Xiangpeng Dai
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital of Jilin University, Changchun, China; National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital of Jilin University, Changchun, China.
| | - Xiaoling Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital of Jilin University, Changchun, China; National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital of Jilin University, Changchun, China.
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2
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Yang X, Zhu Q. SPOP in Cancer: Phenomena, Mechanisms and Its Role in Therapeutic Implications. Genes (Basel) 2022; 13:2051. [PMID: 36360288 PMCID: PMC9690554 DOI: 10.3390/genes13112051] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/14/2022] [Accepted: 11/04/2022] [Indexed: 11/15/2023] Open
Abstract
Speckle-type POZ (pox virus and zinc finger protein) protein (SPOP) is a cullin 3-based E3 ubiquitin ligase adaptor protein that plays a crucial role in ubiquitin-mediated protein degradation. Recently, SPOP has attracted major research attention as it is frequently mutated in a range of cancers, highlighting pleiotropic tumorigenic effects and associations with treatment resistance. Structurally, SPOP contains a functionally critical N-terminal meprin and TRAF homology (MATH) domain for many SPOP substrates. SPOP has two other domains, including the internal Bric-a-brac-Tramtrack/Broad (BTB) domain, which is linked with SPOP dimerization and binding to cullin3, and a C-terminal nuclear localization sequence (NLS). The dysregulation of SPOP-mediated proteolysis is associated with the development and progression of different cancers since abnormalities in SPOP function dysregulate cellular signaling pathways by targeting oncoproteins or tumor suppressors in a tumor-specific manner. SPOP is also involved in genome stability through its role in the DNA damage response and DNA replication. More recently, studies have shown that the expression of SPOP can be modulated in various ways. In this review, we summarize the current understanding of SPOP's functions in cancer and discuss how to design a rational therapeutic target.
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Affiliation(s)
| | - Qing Zhu
- Department of Abdominal Oncology, West China Hospital of Sichuan University, Chengdu 610041, China
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3
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Novel insights into the SPOP E3 ubiquitin ligase: From the regulation of molecular mechanisms to tumorigenesis. Biomed Pharmacother 2022; 149:112882. [PMID: 35364375 DOI: 10.1016/j.biopha.2022.112882] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/13/2022] [Accepted: 03/23/2022] [Indexed: 11/20/2022] Open
Abstract
Ubiquitin-mediated protein degradation is the primary biological process by which protein abundance is regulated and protein homeostasis is maintained in eukaryotic cells. Speckle-type pox virus and zinc finger (POZ) protein (SPOP) is a typical substrate adaptor of the Cullin 3-RING ligase (CRL3) family; it serves as a bridge between the Cullin 3 (Cul3) scaffold protein and its substrates. In recent years, SPOP has received increasing attention because of its versatility in its regulatory pathways and the diversity of tumor types involved. Mechanistically, SPOP substrates are involved in a wide range of biological processes, and abnormalities in SPOP function perturb downstream biological processes and promote tumorigenesis. Additionally, liquid-liquid phase separation (LLPS), a potential mechanism of membraneless organelle formation, was recently found to mediate the self-triggered colocalization of substrates with higher-order oligomers of SPOP. Herein, we summarize the structure of SPOP and the specific mechanisms by which it mediates the efficient ubiquitination of substrates. Additionally, we review the biological functions of SPOP, the regulation of SPOP expression, the role of SPOP in tumorigenesis and its therapeutic value.
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4
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Yildirim-Buharalioglu G. KDM6B Regulates Prostate Cancer Cell Proliferation by Controlling c-MYC Expression. Mol Pharmacol 2021; 101:106-119. [PMID: 34862309 DOI: 10.1124/molpharm.121.000372] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 11/29/2021] [Indexed: 11/22/2022] Open
Abstract
Elevated expression of lysine demethylase 6A (KDM6A) and 6B (KDM6B) has been reported in prostate cancer (PCa). However, the mechanism underlying the specific role of KDM6A/B in PCa is still fragmentary. Here, we report novel KDM6A/B downstream targets involved in controlling PCa cell proliferation. KDM6A and KDM6B mRNAs were higher in LNCaP but not in PC3 and DU145 cells. Higher KDM6A mRNA was confirmed at the protein level. A metastasis associated gene focussed oligonucleotide array was performed to identify KDM6A/B dependent genes in LNCaP cells treated with a KDM6 family selective inhibitor, GSK-J4. This identified 5 genes (c-MYC, NF2, CTBP1, EPHB2, PLAUR) that were decreased more than 50 % by GSK-J4 and c-MYC was the most downregulated gene. Array data was validated by quantitative RT-PCR, which detected a reduction in c-MYC steady state mRNA and pre-spliced mRNA, indicative of transcriptional repression of c-MYC gene expression. Furthermore, c-MYC protein was also decreased by GSK-J4. Importantly, GSK-J4 reduced mRNA and protein levels of c-MYC target gene, CyclinD1 (CCND1). Silencing of KDM6A/B with siRNA confirmed that expression of both c-MYC and CCND1 are dependent on KDM6B. Phosphorylated Retinoblastoma (pRb), a marker of G1 to S-phase transition, was decreased by GSK-J4 and KDM6B silencing. GSK-J4 treatment resulted decrease in cell proliferation and cell number, detected by MTS assay and conventional cell counting, respectively. Consequently, we conclude that KDM6B controlling c-MYC, CCND1 and pRb contribute regulation of PCa cell proliferation, which represents KDM6B as a promising epigenetic target for the treatment of advanced PCa. Significance Statement Lysine demethylase 6A (KDM6A) and 6B (KDM6B) were upregulated in prostate cancer (PCa). Here, we reported novel KDM6A/B downstream targets involved in controlling PCa cell proliferation. Amongst 84 metastasis associated genes, c-MYC was the most inhibited gene by KDM6 family inhibitor, GSK-J4. This was accompanied by decreased c-MYC target gene, CCND1 and pRb, which were selectively dependent on KDM6B. GSK-J4 decreased proliferation and cell counting. Consequently, we conclude that KDM6B controlling c-MYC, CCND1 and pRb contribute regulation of PCa proliferation.
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Hernández-Llodrà S, Segalés L, Juanpere N, Marta Lorenzo T, Salido M, Nonell L, David López T, Rodríguez-Vida A, Bellmunt J, Fumadó L, Cecchini L, Lloreta-Trull J. SPOP and CHD1 alterations in prostate cancer: Relationship with PTEN loss, tumor grade, perineural infiltration, and PSA recurrence. Prostate 2021; 81:1267-1277. [PMID: 34533858 DOI: 10.1002/pros.24218] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 05/06/2021] [Accepted: 08/16/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND In the non-ETS fusion of prostate cancer (PCa) pathway, SPOP mutations emerge as a distinct oncogenic driver subclass. Both SPOP downregulation and mutation can lead to SPOP target stabilization promoting dysregulation of key regulatory pathways. CHD1 gene is commonly deleted in PCa. CHD1 loss significantly co-occurs with SPOP mutations, resulting in a PCa subclass with increased AR transcriptional activity and with a specific epigenetic pattern. METHODS In this study, SPOP alterations at mutational and protein levels and CHD1 copy number alterations have been analyzed and correlated with ERG and PTEN protein expression and with the clinical pathological features of the patients. RESULTS SPOP protein loss has been detected in 42.9% of the cases, and it has been strongly associated with PTEN protein loss (p < .001). CHD1 gene loss has been detected in 24.5% and SPOP mutations in 5.9% of the cases. Loss of CHD1 has been strongly associated with SPOP mutations (p = .003) and has shown a trend to be associated with ERG wt cancers (p = .08). The loss of SPOP protein (p = .01) and the combination of PTEN and SPOP protein loss (p = .002) were both statistically more common in grade group 5 cancers, with a prevalence of 60% and 37.5%, respectively. Furthermore, SPOP loss/PTEN loss and SPOP wt/PTEN loss phenotypes were strongly associated with extraprostatic perineural infiltration (p = .007). Strong CHD1 loss was associated with a shorter time to PSA recurrence in the univariate (p = .04), and showed a trend to be associated with the PSA recurrence risk in the multivariate analysis (p = .058). CONCLUSIONS The results of the present study suggest that the loss of SPOP protein expression, either alone or in combination with loss of PTEN and, on the other hand, a marked loss of the CHD1 gene are very promising prognostic biomarkers in PCa.
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Affiliation(s)
| | - Laura Segalés
- Departament of Health and Experimental Sciences, Universitat Pompeu Fabra, Barcelona, Spain
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Nuria Juanpere
- Departament of Health and Experimental Sciences, Universitat Pompeu Fabra, Barcelona, Spain
- Department of Pathology, Hospital del Mar-Parc de Salut Mar-IMIM, Barcelona, Spain
| | | | - Marta Salido
- Department of Pathology, Hospital del Mar-Parc de Salut Mar-IMIM, Barcelona, Spain
| | - Lara Nonell
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Tech David López
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Alejo Rodríguez-Vida
- Department of Medical Oncology, Hospital del Mar-Parc de Salut Mar-IMIM, Barcelona, Spain
| | - Joaquim Bellmunt
- Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
- Department of Medical Oncology, Harvard Medical School, Hospital Beth Israel, Boston, Massachusetts, USA
| | - Lluís Fumadó
- Department of Urology, Hospital del Mar-Parc de Salut Mar-IMIM, Barcelona, Spain
| | - Lluís Cecchini
- Department of Urology, Hospital del Mar-Parc de Salut Mar-IMIM, Barcelona, Spain
| | - Josep Lloreta-Trull
- Departament of Health and Experimental Sciences, Universitat Pompeu Fabra, Barcelona, Spain
- Department of Pathology, Hospital del Mar-Parc de Salut Mar-IMIM, Barcelona, Spain
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6
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Kim YS, Shin S, Jung SH, Park YM, Park GS, Lee SH, Chung YJ. Genomic progression of precancerous actinic keratosis to squamous cell carcinoma. J Invest Dermatol 2021; 142:528-538.e8. [PMID: 34480890 DOI: 10.1016/j.jid.2021.07.172] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 07/28/2021] [Accepted: 07/30/2021] [Indexed: 12/17/2022]
Abstract
The mechanism underlying the progression of actinic keratosis (AK) and cutaneous squamous cell carcinoma in situ (SCCIS) to squamous cell carcinoma (SCC) remains unclear. To investigate this, we performed regional microdissection and targeted deep sequencing in SCC (N=10) and paired adjacent SE (sun-damaged epidermis)/AK/SCCIS (N=13) samples to detect mutations and copy number alterations (CNAs). Most (11/13) SE/AK/SCCIS tissues harbored ≥ 1 driver alterations, indicating their precancerous nature. All pairs except one showed genome architectures representing genomic progression of SE/AK/SCCIS to SCC with common trunks and unique branches (7 parallel and 5 linear progression cases). SE/AK/SCCIS tissues tended to harbor lower mutation/CNA burdens than SCC tissues, but most of them had driver mutations, including NOTCH1 and TP53 mutations. SCC-specific genomic alterations included TP53, PIK3CA, FBXW7, and CDKN2A mutations and a MYC copy-number gain, but they were heterogeneous among cases, suggesting that a single gene or pathway does not explain the progression of AK to SCC. In multiregion analyses of AK lesions, only some AK samples were related to SCC. In conclusion, the SE/AK/SCCIS genomes may have previously acquired truncal driver alterations, such as NOTCH1 and TP53 mutations, which promote parallel or linear progression to SCC upon acquisition of additional genomic alterations.
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Affiliation(s)
- Yoon-Seob Kim
- Department of Microbiology, Seoul, Republic of Korea; Precision Medicine Research Center, Seoul, Republic of Korea; Integrated Research Center for Genome Polymorphism, Seoul, Republic of Korea
| | - Sun Shin
- Department of Microbiology, Seoul, Republic of Korea; Precision Medicine Research Center, Seoul, Republic of Korea; Integrated Research Center for Genome Polymorphism, Seoul, Republic of Korea
| | | | - Young Min Park
- Department of Dermatology, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - Gyeong Sin Park
- Department of Hospital Pathology, Seoul St. Mary's Hospital, Seoul, Republic of Korea
| | - Sug Hyung Lee
- Department of Hospital Pathology, Seoul St. Mary's Hospital, Seoul, Republic of Korea; Department of Pathology, Seoul, Republic of Korea
| | - Yeun-Jun Chung
- Department of Microbiology, Seoul, Republic of Korea; Precision Medicine Research Center, Seoul, Republic of Korea; Integrated Research Center for Genome Polymorphism, Seoul, Republic of Korea.
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7
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Offermann A, Joerg V, Hupe MC, Becker F, Müller M, Brägelmann J, Kirfel J, Merseburger AS, Sailer V, Tharun L, Perner S. CDK19 as a diagnostic marker for high-grade prostatic intraepithelial neoplasia. Hum Pathol 2021; 117:60-67. [PMID: 34314763 DOI: 10.1016/j.humpath.2021.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/28/2021] [Accepted: 07/19/2021] [Indexed: 10/20/2022]
Abstract
High-grade prostatic intraepithelial neoplasia (HGPIN) is a facultative precursor lesion of prostate cancer (PCa). Multifocal HGPIN in needle biopsies in the absence of PCa indicates a higher risk of cancer detection in subsequent biopsies. Therefore, a reliable diagnosis of HGPIN is of high clinical relevance guiding the management of patients with cancer-negative biopsies. Detection of HGPIN is merely based on morphological features while biomarkers aiding in the diagnosis of HGPIN and its differentiation from benign glands and other glandular lesions are lacking yet. Here, we investigated the expression of CDK19 by immunohistochemistry on prostate needle biopsies of 140 patients who were all diagnosed with PCa using whole tissue sections, and compared CDK19 levels between HGPIN, PCa and adjacent benign glands. In addition, CDK19 was compared to AMACR expression in a subset of intraductal carcinomas (IDC) on radical prostatectomy (RP) specimens. HGPIN was present in 65.7% of biopsies and in 88% associated to adjacent PCa. CDK19 overexpression defined as moderate to high CDK19 expression visible at low magnification was found in 82.6% of HGPIN. In contrast, 89.3% of benign glands were CDK19-negative or demonstrated only low CDK19 expression highlighting a high sensitivity and specificity to accurately detect HGPIN based on CDK19 expression levels. CDK19 was overexpressed in 59% of PCa but did not correlate significantly with the expression of intermingled HGPIN. On RP, CDK19 and AMACR showed no significant difference in the detection rate of IDC. In summary, assessment of CDK19 facilitates accurate and simplified diagnosis of HGPIN with high sensitivity and specificity and aides the differentiation to non-neoplastic glandular alterations. Considering the high clinical significance of diagnosis HGPIN that still has a limited reproducibility among pathologists we suggest CDK19 as diagnostic biomarker for HGPIN.
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Affiliation(s)
- Anne Offermann
- Institute of Pathology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Vincent Joerg
- Institute of Pathology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Marie C Hupe
- Department of Urology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Finn Becker
- Institute of Pathology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Marten Müller
- Department of Urology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Johannes Brägelmann
- Molecular Pathology, Institute of Pathology, University Hospital of Cologne, Cologne, Germany; Department of Translational Genomics, Center of Integrated Oncology Cologne-Bonn, Medical Faculty, University of Cologne, Cologne, Germany; Mildred Scheel School of Oncology, Cologne, University Hospital Cologne, Medical Faculty, Cologne, Germany
| | - Jutta Kirfel
- Institute of Pathology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Axel S Merseburger
- Department of Urology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Verena Sailer
- Institute of Pathology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Lars Tharun
- Institute of Pathology, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - Sven Perner
- Institute of Pathology, University Hospital Schleswig-Holstein, Luebeck, Germany; Institute of Pathology, Research Center Borstel, Leibniz Lung Center, Borstel, Germany.
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8
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Ma J, Cai M, Mo Y, Fried JS, Tan X, Ma Y, Chen J, Han S, Xu B. The SPOP-ITCH Signaling Axis Protects Against Prostate Cancer Metastasis. Front Oncol 2021; 11:658230. [PMID: 34322378 PMCID: PMC8311740 DOI: 10.3389/fonc.2021.658230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/17/2021] [Indexed: 12/29/2022] Open
Abstract
Prostate cancer is one of the most common causes of cancer incidence and death in men, with the mortality caused primarily by the late-stage and metastatic forms of the disease. The mechanisms and molecular markers for prostate cancer metastasis are not fully understood. Speckle type Poz Protein (SPOP) is an E3 ubiquitin ligase adaptor that is often mutated in prostate cancer. In this study, we sequenced the SPOP gene in 198 prostate cancer patients and found 16 mutations in the cohort. Multivariate analysis revealed that SPOP mutations correlated with the clinical stage of the disease and strongly with metastasis. We identified ITCH as a candidate protein for SPOP-mediated degradation via mass spectrometry. We demonstrated the interaction between SPOP and ITCH, and found that the SPOP F133L mutation disrupted the SPOP-ITCH interaction, leading to a subsequent increase in the ITCH protein level. Further, we found that the SPOP knockdown led to higher levels of Epithelial- mesenchymal transition (EMT) proteins and increased cell invasion. Together, our results highlight the functional significance of the SPOP-ITCH pathway in prostate cancer metastasis.
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Affiliation(s)
- Jinlu Ma
- Department of Radiation Oncology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China.,Department of Oncology, Southern Research Institute, and University Alabama at Birmingham, Birmingham, AL, United States
| | - Mengjiao Cai
- Department of Radiation Oncology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Yaqi Mo
- Department of Biochemistry and Molecular Biology, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Joshua S Fried
- Department of Oncology, Southern Research Institute, and University Alabama at Birmingham, Birmingham, AL, United States
| | - Xinyue Tan
- Department of Radiation Oncology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Yuan Ma
- Department of Radiation Oncology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Jie Chen
- Department of Oncology, Southern Research Institute, and University Alabama at Birmingham, Birmingham, AL, United States
| | - Suxia Han
- Department of Radiation Oncology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China
| | - Bo Xu
- Department of Biochemistry and Molecular Biology, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.,Center for Intelligent Oncology, Chongqing University Cancer Hospital and Chongqing University School of Medicine, Chongqing, China
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9
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Ma Z, Cheng X, Yue T, Shangguan X, Xin Z, Zhang W, Pan J, Wang Q, Xue W. Immune infiltration phenotypes of prostate adenocarcinoma and their clinical implications. Cancer Med 2021; 10:5358-5374. [PMID: 34128342 PMCID: PMC8335836 DOI: 10.1002/cam4.4063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/29/2021] [Accepted: 05/24/2021] [Indexed: 12/24/2022] Open
Abstract
Background Tumor‐infiltrating immune cells participate in the initiation and progression of prostate adenocarcinoma (PRAD). However, it is not fully known how immune infiltration affects the development of PRAD and its clinical presentation. Methods Herein, we investigated the immune infiltration phenotypes in PRAD based on transcriptome profiles, methylation profiles, somatic mutation, and copy number variations. We also developed an immune prognostic model (IPM) to identify unfavorable prognosis. To verify this model, immunohistochemistry staining was performed on a cohort of PRAD samples. Moreover, we constructed a nomogram to assess the survival of PRAD incorporating immune infiltration and other clinical features. Results We categorized PRAD patients into high and low‐level clusters based on immune infiltration phenotypes. The patients in the high‐level clusters had worse survival than their low‐level counterparts. Gene set enrichment analysis indicated that both anti‐ and pro‐tumor terms were enriched in high‐level cluster. Moreover, we identified a positive correlation between anti‐ and pro‐tumor immune cells in PRAD microenvironment. Notably, Somatic mutation analysis showed patients in high‐level cluster had a higher somatic mutation burden of KMT2D, HSPA8, CHD7, and MAP1A. In addition, we developed an IPM with robust predictive ability. The model can distinguish high‐risk PRAD patients with poor prognosis from low‐risk PRAD patients in both training and another three independent validation datasets. Besides, we constructed a nomogram incorporating Gleason score, pathological T stage, and IPM for the prognosis prediction of PRAD patients, which displayed robust predictive ability and might contribute to clinical practice. Conclusion Our work illustrated the immune infiltration phenotypes strongly related to the poor prognosis of PRAD patients, and highlighted the potential of the IPM to identify unfavorable tumor features.
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Affiliation(s)
- Zehua Ma
- State Key Laboratory of Oncogenes and Related Genes, Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiankui Cheng
- Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong Province, China
| | - Ting Yue
- Department of Radiology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University Shanghai, Shanghai, China
| | - Xun Shangguan
- State Key Laboratory of Oncogenes and Related Genes, Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhixiang Xin
- State Key Laboratory of Oncogenes and Related Genes, Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Weiwei Zhang
- State Key Laboratory of Oncogenes and Related Genes, Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jiahua Pan
- State Key Laboratory of Oncogenes and Related Genes, Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qi Wang
- State Key Laboratory of Oncogenes and Related Genes, Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Xue
- State Key Laboratory of Oncogenes and Related Genes, Department of Urology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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10
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Segura-Moreno YY, Sanabria-Salas MC, Varela R, Mesa JA, Serrano ML. Decoding the heterogeneous landscape in the development prostate cancer. Oncol Lett 2021; 21:376. [PMID: 33777200 PMCID: PMC7988715 DOI: 10.3892/ol.2021.12637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 06/02/2020] [Indexed: 01/02/2023] Open
Abstract
Prostate cancer (PCa) is characterized as being histologically and molecularly heterogeneous; however, this is not only incorrect among individuals, but also at the multiple foci level, which originates in the prostate gland itself. The reasons for such heterogeneity have not been fully elucidated; however, understanding these may be crucial in determining the course of the disease. PCa is characterized by a complex network of chromosomal rearrangements, which simultaneously deregulate multiple genes; this could explain the appearance of exclusive events associated with molecular subtypes, which have been extensively investigated to establish clinical management and the development of therapies targeted to this type of cancer. From a clinical aspect, the prognosis of the patient has focused on the characteristics of the index lesion (the largest focus in PCa); however, a significant percentage of patients (11%) also exhibit an aggressive secondary foci, which may determine the prognosis of the disease, and could be the determining factor of why, in different studies, the classification of the subtypes does not have an association with prognosis. Due to the aforementioned reasons, the analysis of molecular subtypes in several foci, from the same individual could assist in determining the association between clinical evolution and management of patients with PCa. Castration-resistant PCa (CRPC) has the worst prognosis and develops following androgen ablation therapy. Currently, there are two models to explain the development of CRPC: i) The selection model and ii) the adaptation model; both of which, have been found to include alterations described in the molecular subtypes, such as Enhancer of zeste 2 polycomb repressive complex 2 subunit overexpression, isocitrate dehydrogenase (NAPD+)1 and forkhead box A1 mutations, suggesting that the presence of specific molecular alterations could predict the development of CRPC. This type of analysis could lead to a biological understanding of PCa, to develop personalized medicine strategies, which could improve the response to treatment thus, avoiding the development of resistance. Therefore, the present review discusses the primary molecular factors, to which variable heterogeneity in PCa progress has been attributed.
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Affiliation(s)
- Yenifer Yamile Segura-Moreno
- Cancer Biology Research Group, National Institute of Cancerology, Bogota 110411, Colombia.,Department of Chemistry, Faculty of Sciences, National University of Colombia, University City, Bogota 111321, Colombia
| | | | - Rodolfo Varela
- Department of Urology, National Institute of Cancerology, Bogota 110411, Colombia.,Department of Urology, National University of Colombia, University City, Bogota 111321, Colombia
| | - Jorge Andrés Mesa
- Department of Pathology, National Institute of Cancerology, Bogota 110411, Colombia
| | - Martha Lucia Serrano
- Cancer Biology Research Group, National Institute of Cancerology, Bogota 110411, Colombia.,Department of Chemistry, Faculty of Sciences, National University of Colombia, University City, Bogota 111321, Colombia
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11
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Gray JS, Campbell MJ. Challenges and Opportunities of Genomic Approaches in Therapeutics Development. Methods Mol Biol 2021; 2194:107-126. [PMID: 32926364 DOI: 10.1007/978-1-0716-0849-4_7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The magnitude of all therapeutic responses is significantly determined by genome structure, variation, and functional interactions. This determination occurs at many levels which are discussed in the current review. Well-established examples of structural variation between individuals are known to dictate an individual's response to numerous drugs, as clearly illustrated by warfarin. The exponential rate of genomic-based interrogation is coupled with an expanding repertoire of genomic technologies and applications. This is leading to an ever more sophisticated appreciation of how structural variation, regulation of transcription and genomic structure, both individually and collectively, define cell therapeutic responses.
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Affiliation(s)
- Jaimie S Gray
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH, USA
| | - Moray J Campbell
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH, USA.
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12
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Jung CK, Jung SH, Jeon S, Jeong YM, Kim Y, Lee S, Bae JS, Chung YJ. Risk Stratification Using a Novel Genetic Classifier Including PLEKHS1 Promoter Mutations for Differentiated Thyroid Cancer with Distant Metastasis. Thyroid 2020; 30:1589-1600. [PMID: 32326836 DOI: 10.1089/thy.2019.0459] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background: Although most differentiated thyroid carcinomas (DTCs) have indolent behavior, DTCs with distant metastasis have a poor prognosis. However, there are no validated markers that predict the risk of distant metastasis and the prognosis of DTC. We aimed to develop a genetic classifier for predicting the outcomes of DTC patients with distant metastases. Methods: Targeted deep sequencing of 157 cancer-related genes was performed for 61 DTCs with distant metastases. A candidate mutation was validated with independent thyroid cancer samples using digital polymerase chain reaction. Results: The most frequently mutated gene in the 61 DTCs was BRAF (n = 31, 51%), followed by TERT promoter (n = 28, 46%), NRAS (n = 13, 11%), PLEKHS1 promoter (n = 6, 10%), and STK11 (n = 6, 10%) mutations. PLEKHS1 promoter mutations were more common in the radioactive iodine (RAI)-refractory cases (p = 0.003). Losses of 9q and 11q were associated with RAI-refractory disease (p = 0.002) and cancer-specific mortality (p = 0.028), respectively. In multivariate analysis, bone metastasis (adjusted odds ratio [aOR] = 15.17, 95% confidence interval [CI 3.38-68.06], p < 0.001) and at least one mutation in the TERT promoter, the PLEKHS1 promoter, or TP53 (aOR = 7.64 [CI 1.78-32.76], p = 0.006) remained significant factors associated with RAI-refractoriness. In independently collected papillary thyroid carcinomas without initial distant metastasis (n = 75), a PLEKHS1 promoter mutation was only found in one case that developed distant metastasis during the follow-up period. We developed a genetic classifier consisting of BRAF, RAS, the TERT promoter, the PLEKHS1 promoter, and TP53 for categorizing the prognosis of patients with DTC with distant metastasis. In the poor-prognosis group, 61% of the patients were RAI-refractory and death occurred in 21% during the follow-up. In the intermediate-prognosis group, 29% were RAI-refractory, but no death occurred. In the good-prognosis group, all patients were RAI-responsive and no death occurred. Conclusions: Mutations in the PLEKHS1 promoter are a novel genetic marker of aggressive DTC. Our genetic classifier can be useful for predicting RAI-refractory disease and poor prognosis in DTC patients with distant metastases.
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Affiliation(s)
- Chan Kwon Jung
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung-Hyun Jung
- Cancer Evolution Research Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sora Jeon
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Mun Jeong
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yourha Kim
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sohee Lee
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ja-Seong Bae
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yeun-Jun Chung
- Department of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- IRCGP, Precision Medicine Research Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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13
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Kaur HB, Salles DC, Paulk A, Epstein JI, Eshleman JR, Lotan TL. PIN-like ductal carcinoma of the prostate has frequent activating RAS/RAF mutations. Histopathology 2020; 78:327-333. [PMID: 32740981 DOI: 10.1111/his.14224] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/28/2020] [Indexed: 12/19/2022]
Abstract
AIMS Prostatic intraepithelial neoplasia-like (PIN-like) ductal carcinoma is a rare tumour characterised by often cystically dilated glands architecturally resembling high-grade PIN, but lacking basal cells. These tumours are frequently accompanied by grade group 1 acinar cancer and behave relatively indolently. In contrast, conventional ductal adenocarcinoma of the prostate is an aggressive variant comparable to grade group 4 acinar cancer. Here, we used targeted next-generation sequencing to molecularly profile PIN-like ductal carcinoma cases at radical prostatectomy. METHODS AND RESULTS Five PIN-like ductal carcinoma samples at radical prostatectomy with sufficient tumour tissue available were analysed for genomic alterations by targeted next-generation sequencing using the Johns Hopkins University (JHU) solid tumour panel. DNA was captured using SureSelect for 640 genes and sequenced on the Illumina HiSeq platform. Three of five (60%) of the PIN-like ductal carcinomas showed activating mutations in the RAS/RAF pathways, which are extraordinarily rare in conventional primary prostate carcinoma (<3% of cases), including an activating hot-spot BRAF mutation (p.K601E), an activating hot-spot mutation in HRAS (p.Q61K) and an in-frame activating deletion in BRAF (p.T488_Q493delinsK). An additional two cases lacked BRAF or HRAS mutations, but harboured in-frame insertions of uncertain significance in MAP2K4 and MAP3K6. One case had sufficient acinar tumour for sequencing, and showed a similar molecular profile as the concurrent PIN-like ductal carcinoma, suggesting a clonal relationship between the two components. CONCLUSIONS PIN-like ductal carcinoma represents a molecularly unique tumour, enriched for potentially targetable oncogenic driver mutations in the RAS/RAF/MAPK pathway. This molecular profile contrasts with that of conventional ductal adenocarcinoma, which is typically enriched for pathogenic mutations in the mismatch repair (MMR) and homologous recombination (HR) DNA repair pathways.
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Affiliation(s)
- Harsimar B Kaur
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Daniela C Salles
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Adina Paulk
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jonathan I Epstein
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - James R Eshleman
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Tamara L Lotan
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, MD, USA
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14
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Abstract
Multiple studies have confirmed that speckle-type pox virus and zinc finger (POZ) protein (SPOP) functions as a substrate adaptor of cullin 3-based E3 ligase and has a crucial role in various cellular processes via specific targeting of proteins for ubiquitination and subsequent proteasomal degradation. Dysregulation of SPOP-mediated proteolysis might be involved in the development and progression of human prostate and kidney cancers. In prostate cancer, SPOP seems to function as a tumour suppressor by targeting several proteins, including androgen receptor (AR), steroid receptor coactivator 3 (SRC3) and BRD4, for degradation, whereas it might function as an oncoprotein in kidney cancer, for example, by targeting phosphatase and tensin homologue (PTEN) for proteasomal degradation. In addition, nuclear SPOP targets AR for degradation and has a role as a tumour suppressor in prostate cancer; however, in kidney cancer, SPOP largely accumulates in the cytoplasm and fails to promote degradation of AR located in the nucleus, resulting in activation of AR-driven pathways and cancer progression. Owing to the context-dependent function of SPOP in human malignancies, further assessment of the molecular mechanisms involving SPOP in prostate and kidney cancers is needed to improve our understanding of its role in the development of these cancer types. Treatments that target SPOP might become therapeutic strategies in these malignancies in the future.
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15
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Song Y, Xu Y, Pan C, Yan L, Wang ZW, Zhu X. The emerging role of SPOP protein in tumorigenesis and cancer therapy. Mol Cancer 2020; 19:2. [PMID: 31901237 PMCID: PMC6942384 DOI: 10.1186/s12943-019-1124-x] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 12/23/2019] [Indexed: 12/24/2022] Open
Abstract
The nuclear speckle-type pox virus and zinc finger (POZ) protein (SPOP), a representative substrate-recognition subunit of the cullin-RING E3 ligase, has been characterized to play a dual role in tumorigenesis and cancer progression. Numerous studies have determined that SPOP suppresses tumorigenesis in a variety of human malignancies such as prostate, lung, colon, gastric, and liver cancers. However, several studies revealed that SPOP exhibited oncogenic function in kidney cancer, suggesting that SPOP could exert its biological function in a cancer type-specific manner. The role of SPOP in thyroid, cervical, ovarian, bone and neurologic cancers has yet to be determined. In this review article, we describe the structure and regulation of SPOP in human cancer. Moreover, we highlight the critical role of SPOP in tumorigenesis based on three major categories: physiological evidence (animal models), pathological evidence (human cancer specimens) and biochemical evidence (downstream ubiquitin substrates). Furthermore, we note that SPOP could be a promising therapeutic target for cancer treatment.
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Affiliation(s)
- Yizuo Song
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China
| | - Yichi Xu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China
| | - Chunyu Pan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China
| | - Linzhi Yan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China
| | - Zhi-Wei Wang
- Center of Scientific Research, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China. .,Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Xueqiong Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China.
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16
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Song Y, Xu Y, Pan C, Yan L, Wang ZW, Zhu X. The emerging role of SPOP protein in tumorigenesis and cancer therapy. Mol Cancer 2020; 19:2. [PMID: 31901237 DOI: 10.1186/s12943019-1124-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 12/23/2019] [Indexed: 05/26/2023] Open
Abstract
The nuclear speckle-type pox virus and zinc finger (POZ) protein (SPOP), a representative substrate-recognition subunit of the cullin-RING E3 ligase, has been characterized to play a dual role in tumorigenesis and cancer progression. Numerous studies have determined that SPOP suppresses tumorigenesis in a variety of human malignancies such as prostate, lung, colon, gastric, and liver cancers. However, several studies revealed that SPOP exhibited oncogenic function in kidney cancer, suggesting that SPOP could exert its biological function in a cancer type-specific manner. The role of SPOP in thyroid, cervical, ovarian, bone and neurologic cancers has yet to be determined. In this review article, we describe the structure and regulation of SPOP in human cancer. Moreover, we highlight the critical role of SPOP in tumorigenesis based on three major categories: physiological evidence (animal models), pathological evidence (human cancer specimens) and biochemical evidence (downstream ubiquitin substrates). Furthermore, we note that SPOP could be a promising therapeutic target for cancer treatment.
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Affiliation(s)
- Yizuo Song
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China
| | - Yichi Xu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China
| | - Chunyu Pan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China
| | - Linzhi Yan
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China
| | - Zhi-Wei Wang
- Center of Scientific Research, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China.
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Xueqiong Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, No. 109 Xueyuan Xi Road, Wenzhou, 325027, Zhejiang, China.
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17
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Testa U, Castelli G, Pelosi E. Cellular and Molecular Mechanisms Underlying Prostate Cancer Development: Therapeutic Implications. MEDICINES (BASEL, SWITZERLAND) 2019; 6:E82. [PMID: 31366128 PMCID: PMC6789661 DOI: 10.3390/medicines6030082] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/19/2019] [Accepted: 07/25/2019] [Indexed: 12/15/2022]
Abstract
Prostate cancer is the most frequent nonskin cancer and second most common cause of cancer-related deaths in man. Prostate cancer is a clinically heterogeneous disease with many patients exhibiting an aggressive disease with progression, metastasis, and other patients showing an indolent disease with low tendency to progression. Three stages of development of human prostate tumors have been identified: intraepithelial neoplasia, adenocarcinoma androgen-dependent, and adenocarcinoma androgen-independent or castration-resistant. Advances in molecular technologies have provided a very rapid progress in our understanding of the genomic events responsible for the initial development and progression of prostate cancer. These studies have shown that prostate cancer genome displays a relatively low mutation rate compared with other cancers and few chromosomal loss or gains. The ensemble of these molecular studies has led to suggest the existence of two main molecular groups of prostate cancers: one characterized by the presence of ERG rearrangements (~50% of prostate cancers harbor recurrent gene fusions involving ETS transcription factors, fusing the 5' untranslated region of the androgen-regulated gene TMPRSS2 to nearly the coding sequence of the ETS family transcription factor ERG) and features of chemoplexy (complex gene rearrangements developing from a coordinated and simultaneous molecular event), and a second one characterized by the absence of ERG rearrangements and by the frequent mutations in the E3 ubiquitin ligase adapter SPOP and/or deletion of CDH1, a chromatin remodeling factor, and interchromosomal rearrangements and SPOP mutations are early events during prostate cancer development. During disease progression, genomic and epigenomic abnormalities accrued and converged on prostate cancer pathways, leading to a highly heterogeneous transcriptomic landscape, characterized by a hyperactive androgen receptor signaling axis.
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Affiliation(s)
- Ugo Testa
- Department of Oncology, Istituto Superiore di Sanità, Vaile Regina Elena 299, 00161 Rome, Italy.
| | - Germana Castelli
- Department of Oncology, Istituto Superiore di Sanità, Vaile Regina Elena 299, 00161 Rome, Italy
| | - Elvira Pelosi
- Department of Oncology, Istituto Superiore di Sanità, Vaile Regina Elena 299, 00161 Rome, Italy
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18
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Trabzonlu L, Kulac I, Zheng Q, Hicks JL, Haffner MC, Nelson WG, Sfanos KS, Ertunc O, Lotan TL, Heaphy CM, Meeker AK, Yegnasubramanian S, De Marzo AM. Molecular Pathology of High-Grade Prostatic Intraepithelial Neoplasia: Challenges and Opportunities. Cold Spring Harb Perspect Med 2019; 9:a030403. [PMID: 30082453 PMCID: PMC6444695 DOI: 10.1101/cshperspect.a030403] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A better understanding of the early stages of prostate cancer initiation, potentially arising from precursor lesions, may fuel development of powerful approaches for prostate cancer prevention or interception. The best-known candidate for such a precursor lesion has been referred to as high-grade prostatic intraepithelial neoplasia (HGPIN). Although there is significant evidence supporting the notion that such HGPIN lesions can give rise to invasive adenocarcinomas of the prostate, there are also numerous complicating considerations and evidence that cloud the picture in many instances. Notably, recent evidence has suggested that some fraction of such lesions that are morphologically consistent with HGPIN may actually be invasive carcinomas masquerading as HGPIN-a state that we term "postinvasive intraepithelial carcinoma" (PIC). Although the prevalence of such PIC lesions is not fully understood, this and other factors can confound the potential of identifying prostate precursors that can be targeted for disease prevention, interception, or treatment. Here, we review our current understanding of the morphological and molecular pathological features of prostate cancer precursor lesions.
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Affiliation(s)
- Levent Trabzonlu
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Ibrahim Kulac
- Department of Pathology, Koc University School of Medicine, Istanbul 34010, Turkey
| | - Qizhi Zheng
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Jessica L Hicks
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Michael C Haffner
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
| | - William G Nelson
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
- The Brady Urological Research Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Karen S Sfanos
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
- The Brady Urological Research Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Onur Ertunc
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Tamara L Lotan
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
| | - Christopher M Heaphy
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
- The Brady Urological Research Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Alan K Meeker
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
- The Brady Urological Research Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Srinivasan Yegnasubramanian
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
- The Brady Urological Research Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
| | - Angelo M De Marzo
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287
- The Brady Urological Research Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21231
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19
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Fittall MW, Van Loo P. Translating insights into tumor evolution to clinical practice: promises and challenges. Genome Med 2019; 11:20. [PMID: 30925887 PMCID: PMC6440005 DOI: 10.1186/s13073-019-0632-z] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Accelerating technological advances have allowed the widespread genomic profiling of tumors. As yet, however, the vast catalogues of mutations that have been identified have made only a modest impact on clinical medicine. Massively parallel sequencing has informed our understanding of the genetic evolution and heterogeneity of cancers, allowing us to place these mutational catalogues into a meaningful context. Here, we review the methods used to measure tumor evolution and heterogeneity, and the potential and challenges for translating the insights gained to achieve clinical impact for cancer therapy, monitoring, early detection, risk stratification, and prevention. We discuss how tumor evolution can guide cancer therapy by targeting clonal and subclonal mutations both individually and in combination. Circulating tumor DNA and circulating tumor cells can be leveraged for monitoring the efficacy of therapy and for tracking the emergence of resistant subclones. The evolutionary history of tumors can be deduced for late-stage cancers, either directly by sampling precursor lesions or by leveraging computational approaches to infer the timing of driver events. This approach can identify recurrent early driver mutations that represent promising avenues for future early detection strategies. Emerging evidence suggests that mutational processes and complex clonal dynamics are active even in normal development and aging. This will make discriminating developing malignant neoplasms from normal aging cell lineages a challenge. Furthermore, insight into signatures of mutational processes that are active early in tumor evolution may allow the development of cancer-prevention approaches. Research and clinical studies that incorporate an appreciation of the complex evolutionary patterns in tumors will not only produce more meaningful genomic data, but also better exploit the vulnerabilities of cancer, resulting in improved treatment outcomes.
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Affiliation(s)
- Matthew W Fittall
- The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.,University College London Cancer Institute, 72 Huntley Street, London, WC1E 6DD, UK.,Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridgeshire, CB10 1SA, UK
| | - Peter Van Loo
- The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK. .,University of Leuven, Herestraat 49, B-3000, Leuven, Belgium.
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20
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Natesan R, Aras S, Effron SS, Asangani IA. Epigenetic Regulation of Chromatin in Prostate Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1210:379-407. [PMID: 31900918 DOI: 10.1007/978-3-030-32656-2_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Epigenetics refers to mitotically/meiotically heritable mechanisms that regulate gene transcription without a need for changes in the DNA code. Covalent modifications of DNA, in the form of methylation, and histone post-translational modifications, in the form of acetylation and methylation, constitute the epigenetic code of a cell. Both DNA and histone modifications are highly dynamic and often work in unison to define the epigenetic state of a cell. Most epigenetic mechanisms regulate gene transcription by affecting localized/genome-wide transitions between heterochromatin and euchromatin states, thereby altering the accessibility of the transcriptional machinery and in turn, reduce/increase transcriptional output. Altered chromatin structure is associated with cancer progression, and epigenetic plasticity primarily governs the resistance of cancer cells to therapeutic agents. In this chapter, we specifically focus on regulators of histone methylation and acetylation, the two well-studied chromatin post-translational modifications, in the context of prostate cancer.
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Affiliation(s)
- Ramakrishnan Natesan
- Department of Cancer Biology, Abramson Family Cancer Research Institute, Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Shweta Aras
- Department of Cancer Biology, Abramson Family Cancer Research Institute, Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Samuel Sander Effron
- Department of Cancer Biology, Abramson Family Cancer Research Institute, Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Irfan A Asangani
- Department of Cancer Biology, Abramson Family Cancer Research Institute, Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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21
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Yeon Yeon S, Jung SH, Jo YS, Choi EJ, Kim MS, Chung YJ, Lee SH. Immune checkpoint blockade resistance-related B2M hotspot mutations in microsatellite-unstable colorectal carcinoma. Pathol Res Pract 2018; 215:209-214. [PMID: 30503610 DOI: 10.1016/j.prp.2018.11.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/07/2018] [Accepted: 11/23/2018] [Indexed: 12/30/2022]
Abstract
β2-microglobulin (B2M), a component of major histocompatibility complex class I, plays an important role in host immune reaction to tumor, and inactivation of B2M is known to contribute to resistance to immune checkpoint blockade (ICB) treatment. To further characterize the B2M alterations in tumors, we analyzed B2M hotspot mutations in 2765 benign and malignant tumor tissues by Sanger sequencing and found B2M mutations in 9 (7.5%) microsatellite-unstable (MSU) colorectal cancers (CRCs) and 3 leukemias (0.6-1.3%), but not in other tumors. Targeted sequencing panel analysis for MSU CRCs showed that B2M-mutated MSU CRCs harbored more driver mutations including TP53 than B2M-wild-type MSU CRCs. Of note, bi-allelic B2M alterations, which had been known to be accumulated during ICB treatment, were frequently found (3/9) in ICB treatment-naive CRCs. Clinicopathologic parameters including CD8 + T cell numbers, cancer stages and patients' survival, however, were not significantly different between B2M-mutated and B2M-wild-type MSU CRCs. Our results indicate that B2M mutation abundance is tissue type-specific (e.g., MSU CRCs) and that genetic makeup of B2M mutation might possibly shape the MSU CRC genomes even before the ICB therapies. Our results show that B2M mutation is common in MSU CRCs, which is one of the main targets for ICB treatment, suggesting that frequent B2M mutation status should be reminded for MSU CRCs in patient selection of ICB.
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Affiliation(s)
- Su Yeon Yeon
- Departments of Pathology, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea; Departments of Cancer Evolution Research Center, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Seung-Hyun Jung
- Departments of Cancer Evolution Research Center, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea; Departments of Integrated Research Center for Genome Polymorphism, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Yun Sol Jo
- Departments of Pathology, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Eun Ji Choi
- Departments of Pathology, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Min Sung Kim
- Departments of Pathology, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea; Departments of Cancer Evolution Research Center, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Yeun-Jun Chung
- Departments of Integrated Research Center for Genome Polymorphism, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea; Departments of Precision Medicine Research Center, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea; Departments of Microbiology, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea.
| | - Sug Hyung Lee
- Departments of Pathology, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea; Departments of Cancer Evolution Research Center, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea.
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22
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Wei X, Fried J, Li Y, Hu L, Gao M, Zhang S, Xu B. Functional roles of Speckle-Type Poz (SPOP) Protein in Genomic stability. J Cancer 2018; 9:3257-3262. [PMID: 30271484 PMCID: PMC6160670 DOI: 10.7150/jca.25930] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 07/27/2018] [Indexed: 12/27/2022] Open
Abstract
Understanding the functional significance of the essential elements in maintaining genomic stability provides insights into the process of tumor initiation and progression, and predicts therapeutic responses. One such element that has recently attracted significant attention is the Speckle-Type Poz Protein (SPOP), an E3 ubiquitin ligase adaptor protein. SPOP is frequently mutated or has altered expression in various cancers, including prostate, renal and endometrial. SPOP is involved in the regulation of proteasome-mediated degradation of several oncoproteins. Moreover, recent data also indicate SPOP's direct involvement in the DNA damage response. SPOP mutants induce alternations in the DNA damage repair pathway by promoting the error-prone Non-homologous end joining (NHEJ) pathway. SPOP has been linked with significant functions in cellular signaling pathways and cancer suppression. This mini-review will discuss recent findings regarding SPOP's role in genomic stability in the pathological setting.
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Affiliation(s)
- Xi Wei
- Department of Diagnostic and Therapeutic Ultrasonography, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Joshua Fried
- Department of Oncology, Southern Research Institute and Cancer Cell Biology Program, University of Alabama at Birmingham Graduate School, Birmingham, AL, 35205.,Cancer Cell Biology Program, University of Alabama at Birmingham Comprehensive Cancer Center Birmingham, AL 35205, USA
| | - Ying Li
- The Third Department of Breast Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Linfei Hu
- Department of Thyroid and Cervical Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Ming Gao
- Department of Thyroid and Cervical Tumor, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Sheng Zhang
- Department of Diagnostic and Therapeutic Ultrasonography, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Bo Xu
- Department of Oncology, Southern Research Institute and Cancer Cell Biology Program, University of Alabama at Birmingham Graduate School, Birmingham, AL, 35205.,Cancer Cell Biology Program, University of Alabama at Birmingham Comprehensive Cancer Center Birmingham, AL 35205, USA.,Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, National Clinical Research Center of Cancer, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China
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23
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Liu J, Kim SY, Shin S, Jung SH, Yim SH, Lee JY, Lee SH, Chung YJ. Overexpression of TFF3 is involved in prostate carcinogenesis via blocking mitochondria-mediated apoptosis. Exp Mol Med 2018; 50:1-11. [PMID: 30139961 PMCID: PMC6107499 DOI: 10.1038/s12276-018-0137-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 05/10/2018] [Accepted: 06/07/2018] [Indexed: 12/24/2022] Open
Abstract
The overexpression of trefoil factor family 3 (TFF3) is observed in a variety of cancers, including prostate cancer (PCa), and its potential role in carcinogenesis, such as activating the PI3K/AKT pathway, is suggested. However, its role and its related mechanisms in prostate tumorigenesis remain unknown. To elucidate the role of TFF3 overexpression in PCa, we silenced TFF3 in two PCa cell lines that overexpressed TFF3 and explored the molecular mechanism behind its antiapoptotic role. We also examined TFF3 expression in 108 Korean PCa specimens and 106 normal prostate tissues by immunohistochemistry (IHC) analysis. The mean TFF3 IHC score in the tumor tissues was significantly higher than that in the normal tissues (4.702 vs. 0.311, P = 2.52 × 10-24). TFF3-silenced cells showed suppressed tumor cell growth and migration. TFF3 silencing decreased BCL2 and increased BAX expression. The translocation of BAX to the mitochondria was also confirmed. After TFF3 silencing, the expression of the mitochondrial proapoptotic proteins, cytochrome C and Smac/DIABLO, was elevated, and these proteins were released from the mitochondria to the cytosol. Downstream mediators of mitochondrial apoptosis, including cleaved caspase-3, caspase-9, and PARP, were also elevated. Accordingly, the proportion of apoptotic cells was significantly higher among TFF3-silenced cells. There was no difference in extrinsic apoptosis-related molecules after TFF3 silencing. All the results support that TFF3 silencing induces the downstream signaling pathway of mitochondria-mediated apoptosis. This study provides a better understanding of the mechanism of prostate tumorigenesis, suggesting TFF3 as a potential biomarker and therapeutic target of PCa.
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Affiliation(s)
- Jieying Liu
- Precision Medicine Research Center, Seoul, Korea
- Integrated Research Center for Genome Polymorphism, Seoul, Korea
| | - So Youn Kim
- Precision Medicine Research Center, Seoul, Korea
- Integrated Research Center for Genome Polymorphism, Seoul, Korea
| | - Sun Shin
- Precision Medicine Research Center, Seoul, Korea
- Integrated Research Center for Genome Polymorphism, Seoul, Korea
- Department of Microbiology, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hyun Jung
- Precision Medicine Research Center, Seoul, Korea
- Integrated Research Center for Genome Polymorphism, Seoul, Korea
- Cancer Evolution Research Center, Seoul, Korea
| | - Seon-Hee Yim
- Integrated Research Center for Genome Polymorphism, Seoul, Korea
| | - Ji Youl Lee
- Department of Urology, The Catholic University of Korea, Seoul, Korea
| | - Sug-Hyung Lee
- Cancer Evolution Research Center, Seoul, Korea
- Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yeun-Jun Chung
- Precision Medicine Research Center, Seoul, Korea.
- Integrated Research Center for Genome Polymorphism, Seoul, Korea.
- Department of Microbiology, The Catholic University of Korea, Seoul, Korea.
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24
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Jung SH, Kim SY, An CH, Lee SH, Jung ES, Park HC, Kim MS, Chung YJ, Lee SH. Clonal Structures of Regionally Synchronous Gastric Adenomas and Carcinomas. Clin Cancer Res 2018; 24:4715-4725. [PMID: 29945994 DOI: 10.1158/1078-0432.ccr-18-0345] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/07/2018] [Accepted: 06/22/2018] [Indexed: 01/11/2023]
Abstract
Purpose: Gastric adenoma (GA) is a premalignant lesion that precedes intestinal-type gastric carcinoma (GC). However, genetic progression mechanisms from GA to GC have not been clarified.Experimental Design: We performed whole-exome sequencing-based mutational analyses for 15 synchronous pairs of attached GAs and GCs.Results: There was no significant difference in the number of driver mutations or copy-number alterations between GAs and GCs. Well-known mutations of TP53, APC, RNF43, and RPL22 were recurrently detected in synchronous GA/GC pairs. In addition, we discovered novel KDM6A, PREX2, FAT1, KMT2C, GLI3, and RPL22 mutations and hypermutation in GAs, but did not identify recurrent drivers for GA-to-GC progression. Clonal structure analyses revealed that most GA/GC pairs exhibit parallel evolution with early divergence rather than stepwise evolution during GA-to-GC progression. Of note, three cases were identified as clonally nonrelated GA/GC pairs despite the lack of histologic differences. We found differences in dominant mutational signatures 1, 6, 15, and 17 in GA/GC trunks, GA branches, and GC branches. Compared with our previous work on synchronous colon adenoma/carcinoma genome structures, where most drivers were in the trunk with parallel evolution, synchronous GA/GC genomes showed a different model of parallel evolution, with many drivers in the branches.Conclusions: The preferred sequence of mutational events during GA-to-GC progression might be more context-dependent than colon adenoma progression. Our results show that nonclonal synchronous GA/GC is common and that GA genomes have already acquired distinct genomic alterations, suggesting caution in the diagnosis of synchronous GA and GC, especially in residual or recurrent cases. Clin Cancer Res; 24(19); 4715-25. ©2018 AACR.
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Affiliation(s)
- Seung-Hyun Jung
- Department of Cancer Evolution Research Center, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea.,Department of Integrated Research Center for Genome Polymorphism, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Shin Young Kim
- Department of Integrated Research Center for Genome Polymorphism, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea.,Department of Surgery, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Chang Hyeok An
- Department of Surgery, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Sung Hak Lee
- Department of Hospital Pathology, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Eun Sun Jung
- Department of Hospital Pathology, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Hyeon-Chun Park
- Department of Integrated Research Center for Genome Polymorphism, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Min Sung Kim
- Department of Cancer Evolution Research Center, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea.,Department of Pathology, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Yeun-Jun Chung
- Department of Cancer Evolution Research Center, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea. .,Department of Integrated Research Center for Genome Polymorphism, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea.,Department of Microbiology, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
| | - Sug Hyung Lee
- Department of Cancer Evolution Research Center, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea. .,Department of Pathology, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
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25
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Tolkach Y, Kristiansen G. Is high-grade prostatic intraepithelial neoplasia (HGPIN) a reliable precursor for prostate carcinoma? Implications for clonal evolution and early detection strategies. J Pathol 2018; 244:389-393. [DOI: 10.1002/path.5045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 01/05/2018] [Accepted: 01/20/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Yuri Tolkach
- Institute of Pathology; University Hospital Bonn; Bonn Germany
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26
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Ye H, Sowalsky AG. Molecular correlates of intermediate- and high-risk localized prostate cancer. Urol Oncol 2018; 36:368-374. [PMID: 30103901 DOI: 10.1016/j.urolonc.2017.12.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/13/2017] [Accepted: 12/24/2017] [Indexed: 12/22/2022]
Abstract
Clinicopathologic parameters, including Gleason score, remain the most validated prognostic factors for patients diagnosed with localized prostate cancer (PCa). However, patients of the same risk groups have exhibited heterogeneity of disease outcomes. To improve risk classification, multiple molecular risk classifiers have been developed, which were designed to inform beyond existing clinicopathologic classifiers. Alterations affecting tumor suppressors and oncogenes, such as PTEN, MYC, BRCA2, and TP53, which have been long associated with aggressive PCa, demonstrated grade-dependent frequency of alterations in localized PCas. In addition to these genetic hallmarks, several RNA-based commercial tests have been recently developed to help identify men who would benefit from earlier interventions. Large genomic studies also correlate germline genetic alterations and epigenetic features with adverse outcomes, further strengthening the link between the risk of metastasis and a stepwise accumulation of driver molecular lesions.
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Affiliation(s)
- Huihui Ye
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Adam G Sowalsky
- Prostate Cancer Genetics Section, Laboratory of Genitourinary Cancer Pathogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD.
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27
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Lv S, Ji L, Chen B, Liu S, Lei C, Liu X, Qi X, Wang Y, Lai-Han Leung E, Wang H, Zhang L, Yu X, Liu Z, Wei Q, Lu L. Histone methyltransferase KMT2D sustains prostate carcinogenesis and metastasis via epigenetically activating LIFR and KLF4. Oncogene 2018; 37:1354-1368. [PMID: 29269867 PMCID: PMC6168472 DOI: 10.1038/s41388-017-0026-x] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 10/14/2017] [Accepted: 10/19/2017] [Indexed: 01/01/2023]
Abstract
Abnormalities in epigenetic modifiers are emerging as driving events in prostate cancer (PCa). The histone methyltransferase KMT2D, a frequently aberrant epigenetic modifier in various tumors, has an undefined role in PCa. Moreover, little is known regarding KMT2D's mutation in Chinese patients or its downstream signaling pathways and targets. Here, we profiled the mutational spectrum of 32 significantly PCa-associated genes by using disease-targeted sequencing, and found that KMT2D was highly mutated (63.04%, 29/46) in Chinese patients. Moreover, high KMT2D transcription was also associated with poor prognosis in an independent cohort (n = 51). In KMT2D-knockdown PC-3 and DU145 cells, cell proliferation (P < 0.01), invasion (P < 0.001), and migration (P < 0.01) were consequently suppressed. KMT2D depletion effectively suppressed tumor growth by 92.21% in vivo. Notably, integrative analyses of RNAseq and ChIPseq characterized two crucial genes downregulated by KMT2D, leukemia inhibitory factor receptor (LIFR) and Kruppel-like factor-4 (KLF4), which are regulators in PI3K/Akt and EMT, respectively. Our present study revealed that KMT2D epigenetically activates PI3K/Akt pathway and EMT by targeting LIFR and KLF4 and thus serves as a putative epigenetic-based target for treating PCa.
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Affiliation(s)
- Shidong Lv
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Liyan Ji
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Bin Chen
- Department of Science and Training, General Hospital of Guangzhou Military Command of People's Liberation Army, Guangzhou, Guangdong, China
| | - Shuqiang Liu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Chengyong Lei
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xi Liu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Xiaoxiao Qi
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Ying Wang
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Elaine Lai-Han Leung
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau (SAR), China
| | - Hongyi Wang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Lin Zhang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiaoming Yu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhongqiu Liu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau (SAR), China.
| | - Qiang Wei
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
| | - Linlin Lu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China.
- State Key Laboratory of Quality Research in Chinese Medicine/Macau Institute For Applied Research in Medicine and Health, Macau University of Science and Technology, Macau (SAR), China.
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28
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Lee SH, Jung SH, Kim TM, Rhee JK, Park HC, Kim MS, Kim SS, An CH, Lee SH, Chung YJ. Whole-exome sequencing identified mutational profiles of high-grade colon adenomas. Oncotarget 2018; 8:6579-6588. [PMID: 28179590 PMCID: PMC5351654 DOI: 10.18632/oncotarget.14172] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 12/02/2016] [Indexed: 02/07/2023] Open
Abstract
Although gene-to-gene analyses identified genetic alterations such as APC, KRAS and TP53 mutations in colon adenomas, it is largely unknown whether there are any others in them. Mutational profiling of high-grade colon adenoma (HGCA) that just precedes colon carcinoma might identify not only novel adenoma-specific genes but also critical genes for its progression to carcinoma. For this, we performed whole-exome sequencing (WES) of 12 HGCAs and identified 11 non-hypermutated and one hypermutated (POLE-mutated) cases. We identified 22 genes including APC, KRAS, TP53, GNAS, NRAS, SMAD4, ARID2, and PIK3CA with non-silent mutations in the cancer Census Genes. Bi-allelic and mono-allelic APC alterations were found in nine and one HGCAs, respectively, while the other two harbored wild-type APC. Five HGCAs harbored either mono-allelic (four HGCAs) or bi-allelic (one HGCA) SMAD4 mutation or 18q loss that had been known as early carcinoma-specific changes. We identified MTOR, ACVR1B, GNAQ, ATM, CNOT1, EP300, ARID2, RET and MAP2K4 mutations for the first time in colon adenomas. Our WES data is largely matched with the earlier 'adenoma-carcinoma model' (APC, KRAS, NRAS and GNAS mutations), but there are newly identified SMAD4, MTOR, ACVR1B, GNAQ, ATM, CNOT1, EP300, ARID2, RET and MAP2K4 mutations in this study. Our findings provide resource for understanding colon premalignant lesions and for identifying genomic clues for differential diagnosis and therapy options for colon adenomas and carcinomas.
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Affiliation(s)
- Sung Hak Lee
- Departments of Hospital Pathology, The Catholic University of Korea, Seoul, Korea
| | - Seung Hyun Jung
- Departments of Integrated Research Center for Genome Polymorphism, The Catholic University of Korea, Seoul, Korea.,Departments of Cancer Evolution Research Center, The Catholic University of Korea, Seoul, Korea
| | - Tae-Min Kim
- Departments of Medical Informatics, The Catholic University of Korea, Seoul, Korea
| | - Je-Keun Rhee
- Departments of Medical Informatics, The Catholic University of Korea, Seoul, Korea
| | - Hyeon-Chun Park
- Departments of Microbiology, The Catholic University of Korea, Seoul, Korea.,Departments of Integrated Research Center for Genome Polymorphism, The Catholic University of Korea, Seoul, Korea
| | - Min Sung Kim
- Departments of Pathology, The Catholic University of Korea, Seoul, Korea.,Departments of Cancer Evolution Research Center, The Catholic University of Korea, Seoul, Korea
| | - Sung Soo Kim
- Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chang Hyeok An
- Departments of General Surgery The Catholic University of Korea, Seoul, Korea
| | - Sug Hyung Lee
- Departments of Pathology, The Catholic University of Korea, Seoul, Korea.,Departments of Cancer Evolution Research Center, The Catholic University of Korea, Seoul, Korea
| | - Yeun-Jun Chung
- Departments of Microbiology, The Catholic University of Korea, Seoul, Korea.,Departments of Integrated Research Center for Genome Polymorphism, The Catholic University of Korea, Seoul, Korea.,Departments of Pathology, The Catholic University of Korea, Seoul, Korea
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29
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Jung SH, Kim MS, Jung CK, Park HC, Kim SY, Liu J, Bae JS, Lee SH, Kim TM, Lee SH, Chung YJ. Mutational burdens and evolutionary ages of thyroid follicular adenoma are comparable to those of follicular carcinoma. Oncotarget 2018; 7:69638-69648. [PMID: 27626165 PMCID: PMC5342504 DOI: 10.18632/oncotarget.11922] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 09/02/2016] [Indexed: 12/30/2022] Open
Abstract
Follicular thyroid adenoma (FTA) precedes follicular thyroid carcinoma (FTC) by definition with a favorable prognosis compared to FTC. However, the genetic mechanism of FTA to FTC progression remains unknown. For this, it is required to disclose FTA and FTC genomes in mutational and evolutionary perspectives. We performed whole-exome sequencing and copy number profiling of 14 FTAs and 13 FTCs, which exhibited previously-known gene mutations (NRAS, HRAS, BRAF, TSHR and EIF1AX) and copy number alterations (CNAs) (22q loss and 1q gain) in follicular tumors. In addition, we found eleven potential cancer-related genes with mutations (EZH1, SPOP, NF1, TCF12, IGF2BP3, KMT2C, CNOT1, BRIP1, KDM5C, STAG2 and MAP4K3) that have not been reported in thyroid follicular tumors. Of note, FTA genomes showed comparable levels of mutations to FTC in terms of the number, sequence composition and functional consequences (potential driver mutations) of mutations. Analyses of evolutionary ages using somatic mutations as molecular clocks further identified that FTA genomes were as old as FTC genomes. Whole-transcriptome sequencing did not find any gene fusions with potential significance. Our data indicate that FTA genomes may be as old as FTC genomes, thus suggesting that follicular thyroid tumor genomes during the transition from FTA to FTC may stand stable at genomic levels in contrast to the discernable changes at pathologic and clinical levels. Also, the data suggest a possibility that the mutational profiles obtained from early biopsies may be useful for the molecular diagnosis and therapeutics of follicular tumor patients.
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Affiliation(s)
- Seung-Hyun Jung
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Integrated Research Center for Genome Polymorphism, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Min Sung Kim
- Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chan Kwon Jung
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyun-Chun Park
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Integrated Research Center for Genome Polymorphism, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - So Youn Kim
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Integrated Research Center for Genome Polymorphism, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jieying Liu
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Integrated Research Center for Genome Polymorphism, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ja-Seong Bae
- Department of General Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sung Hak Lee
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Tae-Min Kim
- Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sug Hyung Lee
- Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yeun-Jun Chung
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Department of Integrated Research Center for Genome Polymorphism, College of Medicine, The Catholic University of Korea, Seoul, Korea
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30
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Mutational signatures and chromosome alteration profiles of squamous cell carcinomas of the vulva. Exp Mol Med 2018; 50:e442. [PMID: 29422544 PMCID: PMC5903820 DOI: 10.1038/emm.2017.265] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/30/2017] [Accepted: 09/04/2017] [Indexed: 12/30/2022] Open
Abstract
Vulvar squamous cell carcinoma (SCC) consists of two different etiologic categories: human papilloma virus (HPV)-associated (HPV (+)) and HPV-non-associated (HPV (−)). There have been no genome-wide studies on the genetic alterations of vulvar SCCs or on the differences between HPV (+) and HPV (−) vulvar SCCs. In this study, we performed whole-exome sequencing and copy number profiling of 6 HPV (+) and 9 HPV (−) vulvar SCCs and found known mutations (TP53, CDKN2A and HRAS) and copy number alterations (CNAs) (7p and 8q gains and 2q loss) in HPV (−) SCCs. In HPV (+), we found novel mutations in PIK3CA, BRCA2 and FBXW7 that had not been reported in vulvar SCCs. HPV (−) SCCs exhibited more mutational loads (numbers of nonsilent mutations and driver mutations) than HPV (+) SCCs, but the CNA loads and mutation signatures between HPV (+) and HPV (−) SCCs did not differ. Of note, 40% and 40% of the 15 vulvar SCCs harbored PIK3CA and FAT1 alterations, respectively. In addition, we found that the SCCs harbored kataegis (a localized hypermutation) in 2 HPV (+) SCCs and copy-neutral losses of heterozygosity in 4 (one HPV (+) and 3 HPV (−)) SCCs. Our data indicate that HPV (+) and HPV (−) vulvar SCCs may have different mutation and CNA profiles but that there are genomic features common to SCCs. Our data provide useful information for both HPV (+) and HPV (−) vulvar SCCs and may aid in the development of clinical treatment strategies.
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31
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Abstract
CONTEXT - Precursor lesions of urologic malignancies are established histopathologic entities, which are important not only to recognize for clinical purposes, but also to further investigate at the molecular level in order to gain a better understanding of the pathogenesis of these malignancies. OBJECTIVE - To provide a brief overview of precursor lesions to the most common malignancies that develop within the genitourinary tract with a focus on their clinical implications, histologic features, and molecular characteristics. DATA SOURCES - Literature review from PubMed, urologic pathology textbooks, and the 4th edition of the World Health Organization Classification of Tumours of the Urinary System and Male Genital Organs. All photomicrographs were taken from cases seen at Weill Cornell Medicine or from the authors' personal slide collections. CONCLUSIONS - The clinical importance and histologic criteria are well established for the known precursor lesions of the most common malignancies throughout the genitourinary tract, but further investigation is warranted at the molecular level to better understand the pathogenesis of these lesions. Such investigation may lead to better risk stratification of patients and potentially novel treatments.
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32
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Emami NC, Leong L, Wan E, Van Blarigan EL, Cooperberg MR, Tenggara I, Carroll PR, Chan JM, Witte JS, Simko JP. Tissue Sources for Accurate Measurement of Germline DNA Genotypes in Prostate Cancer Patients Treated With Radical Prostatectomy. Prostate 2017; 77:425-434. [PMID: 27900799 PMCID: PMC5479703 DOI: 10.1002/pros.23283] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 11/03/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Benign tissue from a tumor-containing organ is commonly the only available source for obtaining a patient's unmutated genome for use in cancer research. While it is critical to identify histologically normal tissue that is independent of the tumor lineage, few additional considerations are applied to the choice of this material for such measurements. METHODS Normal formalin-fixed, paraffin-embedded seminal vesicle, and urethral tissues, in addition to whole blood, were collected from 31 prostate cancer patients having undergone radical prostatectomy. Genotype concordance was evaluated for DNA from each tissue source in relation to whole blood. RESULTS Overall, there was a greater genotype call rate for DNA derived from urethral tissue (97.0%) in comparison with patient-matched seminal vesicle tissues (95.9%, P = 0.0015). Furthermore, with reference to patient-matched whole blood, urethral samples exhibited higher genotype concordance (94.1%) than that of seminal vesicle samples (92.5%, P = 0.035). CONCLUSIONS These findings highlight the heterogeneity between diverse sources of DNA in genotype measurement and motivate the consideration of normal tissue biases in tumor-normal analyses. Prostate 77: 425-434, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Nima C. Emami
- Program in Biological and Medical Informatics, University of California, San Francisco, San Francisco, California
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Lancelote Leong
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
| | - Eunice Wan
- Institute for Human Genetics, University of California, San Francisco, San Francisco, California
| | - Erin L. Van Blarigan
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
| | - Matthew R. Cooperberg
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
| | - Imelda Tenggara
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
| | - Peter R. Carroll
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
| | - June M. Chan
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
| | - John S. Witte
- Program in Biological and Medical Informatics, University of California, San Francisco, San Francisco, California
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, California
- Institute for Human Genetics, University of California, San Francisco, San Francisco, California
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
- Correspondence to: Jeffry P. Simko, 1825 4th St., Room M2360, San Francisco, CA 94158, 415-353-7171 (Phone), 415-353-7094 (Fax), . John S. Witte, 1450 3rd St., San Francisco, CA 94158, 415-502-6882 (Phone), 415-476-1356 (Fax),
| | - Jeffry P. Simko
- Department of Urology, Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California
- Department of Anatomic Pathology, University of California, San Francisco, San Francisco, California
- Correspondence to: Jeffry P. Simko, 1825 4th St., Room M2360, San Francisco, CA 94158, 415-353-7171 (Phone), 415-353-7094 (Fax), . John S. Witte, 1450 3rd St., San Francisco, CA 94158, 415-502-6882 (Phone), 415-476-1356 (Fax),
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Shukla-Dave A, Castillo-Martin M, Chen M, Lobo J, Gladoun N, Collazo-Lorduy A, Khan FM, Ponomarev V, Yi Z, Zhang W, Pandolfi PP, Hricak H, Cordon-Cardo C. Ornithine Decarboxylase Is Sufficient for Prostate Tumorigenesis via Androgen Receptor Signaling. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:3131-3145. [PMID: 27770613 PMCID: PMC5225291 DOI: 10.1016/j.ajpath.2016.08.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 07/09/2016] [Accepted: 08/09/2016] [Indexed: 12/18/2022]
Abstract
Increased polyamine synthesis is known to play an important role in prostate cancer. We aimed to explore its functional significance in prostate tumor initiation and its link to androgen receptor (AR) signaling. For this purpose, we generated a new cell line derived from normal epithelial prostate cells (RWPE-1) with overexpression of ornithine decarboxylase (ODC) and used it for in vitro and in vivo experiments. We then comprehensively analyzed the expression of the main metabolic enzymes of the polyamine pathway and spermine abundance in 120 well-characterized cases of human prostate cancer and high-grade prostate intraepithelial neoplasia (HGPIN). Herein, we show that the ODC-overexpressing prostate cells underwent malignant transformation, revealing that ODC is sufficient for de novo tumor initiation in 94% of injected mice. This oncogenic capacity was acquired through alteration of critical signaling networks, including AR, EIF2, and mTOR/MAPK. RNA silencing experiments revealed the link between AR signaling and polyamine metabolism. Human prostate cancers consistently demonstrated up-regulation of the main polyamine enzymes analyzed (ODC, polyamine oxidase, and spermine synthase) and reduction of spermine. This phenotype was also dominant in HGPIN, rendering it a new biomarker of malignant transformation. In summary, we report that ODC plays a key role in prostate tumorigenesis and that the polyamine pathway is altered as early as HGPIN.
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Affiliation(s)
- Amita Shukla-Dave
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, New York; Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Mireia Castillo-Martin
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York; Department of Pathology, Champalimaud Centre for the Unknown, Lisbon, Portugal
| | - Ming Chen
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Jose Lobo
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Nataliya Gladoun
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Ana Collazo-Lorduy
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York; Spanish Society of Medical Oncology, Madrid, Spain
| | - Faisal M Khan
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Vladimir Ponomarev
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Zhengzi Yi
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Weijia Zhang
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Pier P Pandolfi
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Hedvig Hricak
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Carlos Cordon-Cardo
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York.
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Whole-exome sequencing identifies recurrent AKT1 mutations in sclerosing hemangioma of lung. Proc Natl Acad Sci U S A 2016; 113:10672-7. [PMID: 27601661 DOI: 10.1073/pnas.1606946113] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Pulmonary sclerosing hemangioma (PSH) is a benign tumor with two cell populations (epithelial and stromal cells), for which genomic profiles remain unknown. We conducted exome sequencing of 44 PSHs and identified recurrent somatic mutations of AKT1 (43.2%) and β-catenin (4.5%). We used a second subset of 24 PSHs to confirm the high frequency of AKT1 mutations (overall 31/68, 45.6%; p.E17K, 33.8%) and recurrent β-catenin mutations (overall 3 of 68, 4.4%). Of the PSHs without AKT1 mutations, two exhibited AKT1 copy gain. AKT1 mutations existed in both epithelial and stromal cells. In two separate PSHs from one patient, we observed two different AKT1 mutations, indicating they were not disseminated but independent arising tumors. Because the AKT1 mutations were not found to co-occur with β-catenin mutations (or any other known driver alterations) in any of the PSHs studied, we speculate that this may be the single-most common driver alteration to develop PSHs. Our study revealed genomic differences between PSHs and lung adenocarcinomas, including a high rate of AKT1 mutation in PSHs. These genomic features of PSH identified in the present study provide clues to understanding the biology of PSH and for differential genomic diagnosis of lung tumors.
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Gupta S, Li J, Kemeny G, Bitting RL, Beaver J, Somarelli JA, Ware KE, Gregory S, Armstrong AJ. Whole Genomic Copy Number Alterations in Circulating Tumor Cells from Men with Abiraterone or Enzalutamide-Resistant Metastatic Castration-Resistant Prostate Cancer. Clin Cancer Res 2016; 23:1346-1357. [DOI: 10.1158/1078-0432.ccr-16-1211] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/22/2016] [Accepted: 08/25/2016] [Indexed: 11/16/2022]
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Gerrin SJ, Sowalsky AG, Balk SP, Ye H. Mutation Profiling Indicates High Grade Prostatic Intraepithelial Neoplasia as Distant Precursors of Adjacent Invasive Prostatic Adenocarcinoma. Prostate 2016; 76:1227-36. [PMID: 27272561 PMCID: PMC5507580 DOI: 10.1002/pros.23212] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 05/16/2016] [Indexed: 12/23/2022]
Abstract
INTRODUCTION High Grade Prostatic Intraepithelial Neoplasia (HGPIN) is the putative precursor lesion to prostatic adenocarcinoma (PCa), but the precise relationship between HGPIN and PCa remains unclear. METHODS We performed a molecular case study in which we studied mutation profiles of six tumor-associated HGPIN lesions in a single case of TMPRSS2:ERG fusion positive Gleason score 7 PCa that we had previously mapped for somatic mutations in adjacent Gleason patterns 3 and 4 foci, using microdissection and targeted deep-sequencing. RESULTS A total of 32 tumor-specific mutated sites were successfully amplified and sequenced, including 25 truncal mutations and 7 mutations that were specific to either the Gleason pattern 3 or pattern 4 foci. All six HGPIN foci shared the same tumor-specific TMPRSS2:ERG fusion breakpoint, establishing that they were all clonally related to the adjacent invasive tumor. Among the 32 gene targets mutated in the invasive tumor, only mutation of the OR2AP1 gene, a truncal mutation, was found in a single focus of HGPIN. The remaining gene targets that were successfully sequenced were wild-type in all other HGPIN foci. DISCUSSION This study demonstrates the feasibility of targeted mutation profiling of HGPIN lesions, which will be important to understand PCa tumorigenesis. The results in this case, showing a remarkable absence of truncal mutations in HGPIN lesions bearing the tumor-specific ERG fusion, indicate HGPIN lesions may be relatively stable genetically and argue against a stepwise clonal evolution model of HGPIN to PCa. Prostate 76:1227-1236, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Sean J. Gerrin
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
| | - Adam G. Sowalsky
- Hematology-Oncology Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
- Laboratory of Genitourinary Cancer Pathogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Steven P. Balk
- Hematology-Oncology Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
| | - Huihui Ye
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215
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Haffner MC, Barbieri CE. Shifting Paradigms for High-grade Prostatic Intraepithelial Neoplasia. Eur Urol 2016; 69:831-3. [DOI: 10.1016/j.eururo.2015.11.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 11/16/2015] [Indexed: 10/22/2022]
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