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  1. Article ; Online: Immune Signatures Dominate Molecular Subtyping to Predict Response to Neoadjuvant Immunotherapy.

    Meeks, Joshua J / Robertson, A Gordon

    European urology

    2020  Volume 77, Issue 6, Page(s) 711–712

    MeSH term(s) Antibodies, Monoclonal, Humanized ; Humans ; Immunotherapy ; Neoadjuvant Therapy ; Urinary Bladder Neoplasms
    Chemical Substances Antibodies, Monoclonal, Humanized ; pembrolizumab (DPT0O3T46P)
    Language English
    Publishing date 2020-04-17
    Publishing country Switzerland
    Document type Editorial ; Comment
    ZDB-ID 193790-x
    ISSN 1873-7560 ; 1421-993X ; 0302-2838
    ISSN (online) 1873-7560 ; 1421-993X
    ISSN 0302-2838
    DOI 10.1016/j.eururo.2020.03.021
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Reply to Fredrik Liedberg, Pontus Eriksson, and Gottfrid Sjödahl's Letter to the Editor re: A. Gordon Robertson, Clarice S. Groeneveld, Brian Jordan, et al. Identification of Differential Tumor Subtypes of T1 Bladder Cancer. Eur Urol;2020:533-7.

    Meeks, Joshua J / Dyrsjkøt, Lars / Robertson, A Gordon

    European urology

    2020  Volume 78, Issue 6, Page(s) e230–e231

    MeSH term(s) Humans ; Rare Diseases ; Urinary Bladder Neoplasms
    Language English
    Publishing date 2020-09-29
    Publishing country Switzerland
    Document type Letter ; Comment
    ZDB-ID 193790-x
    ISSN 1873-7560 ; 1421-993X ; 0302-2838
    ISSN (online) 1873-7560 ; 1421-993X
    ISSN 0302-2838
    DOI 10.1016/j.eururo.2020.09.030
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: spongEffects: ceRNA modules offer patient-specific insights into the miRNA regulatory landscape.

    Boniolo, Fabio / Hoffmann, Markus / Roggendorf, Norman / Tercan, Bahar / Baumbach, Jan / Castro, Mauro A A / Robertson, A Gordon / Saur, Dieter / List, Markus

    Bioinformatics (Oxford, England)

    2023  Volume 39, Issue 5

    Abstract: Motivation: Cancer is one of the leading causes of death worldwide. Despite significant improvements in prevention and treatment, mortality remains high for many cancer types. Hence, innovative methods that use molecular data to stratify patients and ... ...

    Abstract Motivation: Cancer is one of the leading causes of death worldwide. Despite significant improvements in prevention and treatment, mortality remains high for many cancer types. Hence, innovative methods that use molecular data to stratify patients and identify biomarkers are needed. Promising biomarkers can also be inferred from competing endogenous RNA (ceRNA) networks that capture the gene-miRNA gene regulatory landscape. Thus far, the role of these biomarkers could only be studied globally but not in a sample-specific manner. To mitigate this, we introduce spongEffects, a novel method that infers subnetworks (or modules) from ceRNA networks and calculates patient- or sample-specific scores related to their regulatory activity.
    Results: We show how spongEffects can be used for downstream interpretation and machine learning tasks such as tumor classification and for identifying subtype-specific regulatory interactions. In a concrete example of breast cancer subtype classification, we prioritize modules impacting the biology of the different subtypes. In summary, spongEffects prioritizes ceRNA modules as biomarkers and offers insights into the miRNA regulatory landscape. Notably, these module scores can be inferred from gene expression data alone and can thus be applied to cohorts where miRNA expression information is lacking.
    Availability and implementation: https://bioconductor.org/packages/devel/bioc/html/SPONGE.html.
    MeSH term(s) Humans ; Female ; MicroRNAs/genetics ; MicroRNAs/metabolism ; Gene Regulatory Networks ; Breast Neoplasms/genetics ; Machine Learning ; Gene Expression Regulation, Neoplastic ; RNA, Long Noncoding/genetics
    Chemical Substances MicroRNAs ; RNA, Long Noncoding
    Language English
    Publishing date 2023-04-20
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1422668-6
    ISSN 1367-4811 ; 1367-4803
    ISSN (online) 1367-4811
    ISSN 1367-4803
    DOI 10.1093/bioinformatics/btad276
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Molecular Subtypes of Non-muscle Invasive Bladder Cancer.

    Lerner, Seth P / Robertson, A Gordon

    Cancer cell

    2016  Volume 30, Issue 1, Page(s) 1–3

    Abstract: In this issue of Cancer Cell, Hedegaard et al. report a comprehensive multi-center transcriptional analysis of non-muscle invasive urothelial bladder cancer. They describe three molecular subtypes similar to those seen in other cohorts, as well as a ... ...

    Abstract In this issue of Cancer Cell, Hedegaard et al. report a comprehensive multi-center transcriptional analysis of non-muscle invasive urothelial bladder cancer. They describe three molecular subtypes similar to those seen in other cohorts, as well as a unique CIS signature associated with risk of progression to muscle invasive cancer.
    MeSH term(s) Disease Progression ; Humans ; Neoplasm Invasiveness ; Urinary Bladder Neoplasms
    Language English
    Publishing date 2016--11
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 2078448-X
    ISSN 1878-3686 ; 1535-6108
    ISSN (online) 1878-3686
    ISSN 1535-6108
    DOI 10.1016/j.ccell.2016.06.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Tumor-derived GCSF Alters Tumor and Systemic Immune System Cell Subset Composition and Signaling.

    Matos, Israel / Barvalia, Maunish / Chehal, Manreet K / Robertson, A Gordon / Kulic, Iva / Silva, Jessica A F D / Ranganathan, Abhinandan / Short, Amy / Huang, Yu-Hsuan / Long, Erin / Priatel, John J / Dhanji, Salim / Nelson, Brad H / Krebs, Danielle L / Harder, Kenneth W

    Cancer research communications

    2023  Volume 3, Issue 3, Page(s) 404–419

    Abstract: While immunotherapies such as immune checkpoint blockade and adoptive T-cell therapy improve survival for a subset of human malignancies, many patients fail to respond. Phagocytes including dendritic cells (DC), monocytes, and macrophages (MF) ... ...

    Abstract While immunotherapies such as immune checkpoint blockade and adoptive T-cell therapy improve survival for a subset of human malignancies, many patients fail to respond. Phagocytes including dendritic cells (DC), monocytes, and macrophages (MF) orchestrate innate and adaptive immune responses against tumors. However, tumor-derived factors may limit immunotherapy effectiveness by altering phagocyte signal transduction, development, and activity. Using Cytometry by Time-of-Flight, we found that tumor-derived GCSF altered myeloid cell distribution both locally and systemically. We distinguished a large number of GCSF-induced immune cell subset and signal transduction pathway perturbations in tumor-bearing mice, including a prominent increase in immature neutrophil/myeloid-derived suppressor cell (Neut/MDSC) subsets and tumor-resident PD-L1
    Significance: Tumor-derived GCSF leads to systemic immune population changes. GCSF blockade restores immune populations, improves immunotherapy, and reduces tumor size, paralleling human colorectal cancer data. GCSF inhibition may synergize with current immunotherapies to treat GCSF-secreting tumors.
    MeSH term(s) Humans ; Mice ; Animals ; Myeloid Cells ; Myeloid-Derived Suppressor Cells ; Signal Transduction ; Lymphocytes, Tumor-Infiltrating ; Colonic Neoplasms/metabolism
    Language English
    Publishing date 2023-03-09
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2767-9764
    ISSN (online) 2767-9764
    DOI 10.1158/2767-9764.CRC-22-0278
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: A transcriptional network of cell cycle dysregulation in noninvasive papillary urothelial carcinoma.

    Warrick, Joshua I / Knowles, Margaret A / Hurst, Carolyn D / Shuman, Lauren / Raman, Jay D / Walter, Vonn / Putt, Jeffrey / Dyrskjøt, Lars / Groeneveld, Clarice / Castro, Mauro A A / Robertson, A Gordon / DeGraff, David J

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 16538

    Abstract: Human cancers display a restricted set of expression profiles, despite diverse mutational drivers. This has led to the hypothesis that select sets of transcription factors act on similar target genes as an integrated network, buffering a tumor's ... ...

    Abstract Human cancers display a restricted set of expression profiles, despite diverse mutational drivers. This has led to the hypothesis that select sets of transcription factors act on similar target genes as an integrated network, buffering a tumor's transcriptional state. Noninvasive papillary urothelial carcinoma (NIPUC) with higher cell cycle activity has higher risk of recurrence and progression. In this paper, we describe a transcriptional network of cell cycle dysregulation in NIPUC, which was delineated using the ARACNe algorithm applied to expression data from a new cohort (n = 81, RNA sequencing), and two previously published cohorts. The transcriptional network comprised 121 transcription factors, including the pluripotency factors SOX2 and SALL4, the sex hormone binding receptors ESR1 and PGR, and multiple homeobox factors. Of these 121 transcription factors, 65 and 56 were more active in tumors with greater and less cell cycle activity, respectively. When clustered by activity of these transcription factors, tumors divided into High Cell Cycle versus Low Cell Cycle groups. Tumors in the High Cell Cycle group demonstrated greater mutational burden and copy number instability. A putative mutational driver of cell cycle dysregulation, such as homozygous loss of CDKN2A, was found in only 50% of High Cell Cycle NIPUC, suggesting a prominent role of transcription factor activity in driving cell cycle dysregulation. Activity of the 121 transcription factors strongly associated with expression of EZH2 and other members of the PRC2 complex, suggesting regulation by this complex influences expression of the transcription factors in this network. Activity of transcription factors in this network also associated with signatures of pluripotency and epithelial-to-mesenchymal transition (EMT), suggesting they play a role in driving evolution to invasive carcinoma. Consistent with this, these transcription factors differed in activity between NIPUC and invasive urothelial carcinoma.
    MeSH term(s) Carcinoma in Situ ; Carcinoma, Papillary/pathology ; Carcinoma, Transitional Cell/genetics ; Carcinoma, Transitional Cell/pathology ; Cell Cycle/genetics ; Gene Regulatory Networks ; Humans ; Transcription Factors/genetics ; Urinary Bladder Neoplasms/genetics ; Urinary Bladder Neoplasms/pathology
    Chemical Substances Transcription Factors
    Language English
    Publishing date 2022-10-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-20927-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Integrative modeling identifies genetic ancestry-associated molecular correlates in human cancer.

    Robertson, A Gordon / Yau, Christina / Carrot-Zhang, Jian / Damrauer, Jeffrey S / Knijnenburg, Theo A / Chambwe, Nyasha / Hoadley, Katherine A / Kemal, Anab / Zenklusen, Jean C / Cherniack, Andrew D / Beroukhim, Rameen / Zhou, Wanding

    STAR protocols

    2021  Volume 2, Issue 2, Page(s) 100483

    Abstract: Cellular and molecular aberrations contribute to the disparity of human cancer incidence and etiology between ancestry groups. Multiomics profiling in The Cancer Genome Atlas (TCGA) allows for querying of the molecular underpinnings of ancestry-specific ... ...

    Abstract Cellular and molecular aberrations contribute to the disparity of human cancer incidence and etiology between ancestry groups. Multiomics profiling in The Cancer Genome Atlas (TCGA) allows for querying of the molecular underpinnings of ancestry-specific discrepancies in human cancer. Here, we provide a protocol for integrative associative analysis of ancestry with molecular correlates, including somatic mutations, DNA methylation, mRNA transcription, miRNA transcription, and pathway activity, using TCGA data. This protocol can be generalized to analyze other cancer cohorts and human diseases. For complete details on the use and execution of this protocol, please refer to Carrot-Zhang et al. (2020).
    MeSH term(s) DNA Methylation/genetics ; Databases, Genetic ; Female ; Genomics/methods ; Humans ; Male ; MicroRNAs/genetics ; Models, Genetic ; Neoplasms/genetics ; Transcription, Genetic/genetics
    Chemical Substances MicroRNAs
    Language English
    Publishing date 2021-04-19
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 2666-1667
    ISSN (online) 2666-1667
    DOI 10.1016/j.xpro.2021.100483
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: RTNsurvival: an R/Bioconductor package for regulatory network survival analysis.

    Groeneveld, Clarice S / Chagas, Vinicius S / Jones, Steven J M / Robertson, A Gordon / Ponder, Bruce A J / Meyer, Kerstin B / Castro, Mauro A A

    Bioinformatics (Oxford, England)

    2019  Volume 35, Issue 21, Page(s) 4488–4489

    Abstract: Motivation: Transcriptional networks are models that allow the biological state of cells or tumours to be described. Such networks consist of connected regulatory units known as regulons, each comprised of a regulator and its targets. Inferring a ... ...

    Abstract Motivation: Transcriptional networks are models that allow the biological state of cells or tumours to be described. Such networks consist of connected regulatory units known as regulons, each comprised of a regulator and its targets. Inferring a transcriptional network can be a helpful initial step in characterizing the different phenotypes within a cohort. While the network itself provides no information on molecular differences between samples, the per-sample state of each regulon, i.e. the regulon activity, can be used for describing subtypes in a cohort. Integrating regulon activities with clinical data and outcomes would extend this characterization of differences between subtypes.
    Results: We describe RTNsurvival, an R/Bioconductor package that calculates regulon activity profiles using transcriptional networks reconstructed by the RTN package, gene expression data, and a two-tailed Gene Set Enrichment Analysis. Given regulon activity profiles across a cohort, RTNsurvival can perform Kaplan-Meier analyses and Cox Proportional Hazards regressions, while also considering confounding variables. The Supplementary Information provides two case studies that use data from breast and liver cancer cohorts and features uni- and multivariate regulon survival analysis.
    Availability and implementation: RTNsurvival is written in the R language, and is available from the Bioconductor project at http://bioconductor.org/packages/RTNsurvival/.
    Supplementary information: Supplementary data are available at Bioinformatics online.
    MeSH term(s) Gene Expression ; Gene Regulatory Networks ; Probability ; Software ; Survival Analysis
    Language English
    Publishing date 2019-03-28
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1422668-6
    ISSN 1367-4811 ; 1367-4803
    ISSN (online) 1367-4811
    ISSN 1367-4803
    DOI 10.1093/bioinformatics/btz229
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Immune activation is essential for the antitumor activity of EZH2 inhibition in urothelial carcinoma.

    Piunti, Andrea / Meghani, Khyati / Yu, Yanni / Robertson, A Gordon / Podojil, Joseph R / McLaughlin, Kimberly A / You, Zonghao / Fantini, Damiano / Chiang, MingYi / Luo, Yi / Wang, Lu / Heyen, Nathan / Qian, Jun / Miller, Stephen D / Shilatifard, Ali / Meeks, Joshua J

    Science advances

    2022  Volume 8, Issue 40, Page(s) eabo8043

    Abstract: The long-term survival of patients with advanced urothelial carcinoma (UCa) is limited because of innate resistance to treatment. We identified elevated expression of the histone methyltransferase EZH2 as a hallmark of aggressive UCa and hypothesized ... ...

    Abstract The long-term survival of patients with advanced urothelial carcinoma (UCa) is limited because of innate resistance to treatment. We identified elevated expression of the histone methyltransferase EZH2 as a hallmark of aggressive UCa and hypothesized that EZH2 inhibition, via a small-molecule catalytic inhibitor, might have antitumor effects in UCa. Here, in a carcinogen-induced mouse bladder cancer model, a reduction in tumor progression and an increase in immune infiltration upon EZH2 inhibition were observed. Treatment of mice with EZH2i causes an increase in MHC class II expression in the urothelium and can activate infiltrating T cells. Unexpectedly, we found that the lack of an intact adaptive immune system completely abolishes the antitumor effects induced by EZH2 catalytic inhibition. These findings show that immune evasion is the only important determinant for the efficacy of EZH2 catalytic inhibition treatment in a UCa model.
    MeSH term(s) Animals ; Carcinogens ; Carcinoma, Transitional Cell ; Cell Line, Tumor ; Enhancer of Zeste Homolog 2 Protein/metabolism ; Histone Methyltransferases ; Mice ; Urinary Bladder Neoplasms/metabolism
    Chemical Substances Carcinogens ; Histone Methyltransferases (EC 2.1.1.-) ; Enhancer of Zeste Homolog 2 Protein (EC 2.1.1.43) ; Ezh2 protein, mouse (EC 2.1.1.43)
    Language English
    Publishing date 2022-10-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.abo8043
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Expression-based subtypes define pathologic response to neoadjuvant immune-checkpoint inhibitors in muscle-invasive bladder cancer.

    Robertson, A Gordon / Meghani, Khyati / Cooley, Lauren Folgosa / McLaughlin, Kimberly A / Fall, Leigh Ann / Yu, Yanni / Castro, Mauro A A / Groeneveld, Clarice S / de Reyniès, Aurélien / Nazarov, Vadim I / Tsvetkov, Vasily O / Choy, Bonnie / Raggi, Daniele / Marandino, Laura / Montorsi, Francesco / Powles, Thomas / Necchi, Andrea / Meeks, Joshua J

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 2126

    Abstract: Checkpoint immunotherapy (CPI) has increased survival for some patients with advanced-stage bladder cancer (BCa). However, most patients do not respond. Here, we characterized the tumor and immune microenvironment in pre- and post-treatment tumors from ... ...

    Abstract Checkpoint immunotherapy (CPI) has increased survival for some patients with advanced-stage bladder cancer (BCa). However, most patients do not respond. Here, we characterized the tumor and immune microenvironment in pre- and post-treatment tumors from the PURE01 neoadjuvant pembrolizumab immunotherapy trial, using a consolidative approach that combined transcriptional and genetic profiling with digital spatial profiling. We identify five distinctive genetic and transcriptomic programs and validate these in an independent neoadjuvant CPI trial to identify the features of response or resistance to CPI. By modeling the regulatory network, we identify the histone demethylase KDM5B as a repressor of tumor immune signaling pathways in one resistant subtype (S1, Luminal-excluded) and demonstrate that inhibition of KDM5B enhances immunogenicity in FGFR3-mutated BCa cells. Our study identifies signatures associated with response to CPI that can be used to molecularly stratify patients and suggests therapeutic alternatives for subtypes with poor response to neoadjuvant immunotherapy.
    MeSH term(s) Humans ; Immune Checkpoint Inhibitors/pharmacology ; Immune Checkpoint Inhibitors/therapeutic use ; Neoadjuvant Therapy ; Urinary Bladder Neoplasms/drug therapy ; Urinary Bladder Neoplasms/genetics ; Gene Expression Profiling ; Muscles/pathology ; Tumor Microenvironment/genetics
    Chemical Substances Immune Checkpoint Inhibitors
    Language English
    Publishing date 2023-04-27
    Publishing country England
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-37568-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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