LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 10

Search options

  1. Article ; Online: The emerging therapeutic landscape of relapsed/refractory multiple myeloma.

    Tanenbaum, Benjamin / Miett, Timothy / Patel, Shyam A

    Annals of hematology

    2022  Volume 102, Issue 1, Page(s) 1–11

    Abstract: From a historic lens, treatment for patients with relapsed/refractory multiple myeloma (R/R MM) has advanced significantly since the advent of immunomodulatory agents (IMiDs) in the 1990s, proteasome inhibitors in the 2000s, monoclonal antibodies in the ... ...

    Abstract From a historic lens, treatment for patients with relapsed/refractory multiple myeloma (R/R MM) has advanced significantly since the advent of immunomodulatory agents (IMiDs) in the 1990s, proteasome inhibitors in the 2000s, monoclonal antibodies in the 2010s, and CAR-T treatments in the 2020s. However, the availability of multiple new therapies has also created significant ambiguity regarding therapy selection and sequencing, as consensus guidelines are limited, and cross-trial comparisons of the novel agents are challenging. In this focused review, we discuss the novel Food & Drug Administration (FDA)-approved medications for R/R MM, including the recently approved first-in-class BCMA-directed bispecific antibody teclistamab. We highlight the seminal clinical trials data and discuss optimal sequencing considerations based on the goal of treatment, with an emphasis on the two novel CAR-T cell products. We consider the limited tolerability of certain agents, prospects for our aging population, and financial aspects of these therapies. Finally, we spotlight ongoing trials involving promising agents making their way through the pharmacologic pipeline including the BCMA-directed bispecific antibody elranatamab and the GPRC5D-directed bispecific antibody talquetamab. We summarize our recommendations based on the best available evidence as we enter 2023.
    MeSH term(s) Aged ; Humans ; Antibodies, Bispecific/therapeutic use ; Antibodies, Monoclonal/therapeutic use ; Antineoplastic Agents/therapeutic use ; B-Cell Maturation Antigen/therapeutic use ; Immunotherapy, Adoptive ; Multiple Myeloma/drug therapy ; Neoplasm Recurrence, Local/drug therapy ; Clinical Trials as Topic
    Chemical Substances Antibodies, Bispecific ; Antibodies, Monoclonal ; Antineoplastic Agents ; B-Cell Maturation Antigen
    Language English
    Publishing date 2022-12-03
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 1064950-5
    ISSN 1432-0584 ; 0939-5555 ; 0945-8077
    ISSN (online) 1432-0584
    ISSN 0939-5555 ; 0945-8077
    DOI 10.1007/s00277-022-05058-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Protein interaction networks in the vasculature prioritize genes and pathways underlying coronary artery disease.

    Zhu, Qiuyu Martin / Hsu, Yu-Han H / Lassen, Frederik H / MacDonald, Bryan T / Stead, Stephanie / Malolepsza, Edyta / Kim, April / Li, Taibo / Mizoguchi, Taiji / Schenone, Monica / Guzman, Gaelen / Tanenbaum, Benjamin / Fornelos, Nadine / Carr, Steven A / Gupta, Rajat M / Ellinor, Patrick T / Lage, Kasper

    Communications biology

    2024  Volume 7, Issue 1, Page(s) 87

    Abstract: Population-based association studies have identified many genetic risk loci for coronary artery disease (CAD), but it is often unclear how genes within these loci are linked to CAD. Here, we perform interaction proteomics for 11 CAD-risk genes to map ... ...

    Abstract Population-based association studies have identified many genetic risk loci for coronary artery disease (CAD), but it is often unclear how genes within these loci are linked to CAD. Here, we perform interaction proteomics for 11 CAD-risk genes to map their protein-protein interactions (PPIs) in human vascular cells and elucidate their roles in CAD. The resulting PPI networks contain interactions that are outside of known biology in the vasculature and are enriched for genes involved in immunity-related and arterial-wall-specific mechanisms. Several PPI networks derived from smooth muscle cells are significantly enriched for genetic variants associated with CAD and related vascular phenotypes. Furthermore, the networks identify 61 genes that are found in genetic loci associated with risk of CAD, prioritizing them as the causal candidates within these loci. These findings indicate that the PPI networks we have generated are a rich resource for guiding future research into the molecular pathogenesis of CAD.
    MeSH term(s) Humans ; Coronary Artery Disease/genetics ; Protein Interaction Maps ; Gene Regulatory Networks ; Genetic Loci ; Proteomics
    Language English
    Publishing date 2024-01-12
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ISSN 2399-3642
    ISSN (online) 2399-3642
    DOI 10.1038/s42003-023-05705-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Identification of a Novel Regulator of Clostridioides difficile Cortex Formation.

    Touchette, Megan H / Benito de la Puebla, Hector / Alves Feliciano, Carolina / Tanenbaum, Benjamin / Schenone, Monica / Carr, Steven A / Shen, Aimee

    mSphere

    2021  Volume 6, Issue 3, Page(s) e0021121

    Abstract: Clostridioides difficile is a leading cause of health care-associated infections worldwide. These infections are transmitted by C. difficile's metabolically dormant, aerotolerant spore form. Functional spore formation depends on the assembly of two ... ...

    Abstract Clostridioides difficile is a leading cause of health care-associated infections worldwide. These infections are transmitted by C. difficile's metabolically dormant, aerotolerant spore form. Functional spore formation depends on the assembly of two protective layers, a thick layer of modified peptidoglycan known as the cortex layer and a multilayered proteinaceous meshwork known as the coat. We previously identified two spore morphogenetic proteins, SpoIVA and SipL, that are essential for recruiting coat proteins to the developing forespore and making functional spores. While SpoIVA and SipL directly interact, the identities of the proteins they recruit to the forespore remained unknown. Here, we used mass spectrometry-based affinity proteomics to identify proteins that interact with the SpoIVA-SipL complex. These analyses identified the
    MeSH term(s) Bacterial Proteins/genetics ; Bacterial Proteins/metabolism ; Cell Wall/chemistry ; Cell Wall/genetics ; Cell Wall/physiology ; Clostridioides difficile/genetics ; Clostridioides difficile/physiology ; Gene Expression Regulation, Bacterial/genetics ; Gene Expression Regulation, Bacterial/physiology ; Mass Spectrometry/methods ; Peptidoglycan/genetics ; Peptidoglycan/metabolism ; Proteomics ; Spores, Bacterial/genetics ; Spores, Bacterial/growth & development
    Chemical Substances Bacterial Proteins ; Peptidoglycan
    Language English
    Publishing date 2021-05-28
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 2379-5042
    ISSN (online) 2379-5042
    DOI 10.1128/mSphere.00211-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Prognostic heterogeneity and clonal dynamics within distinct subgroups of myelodysplastic syndrome and acute myeloid leukemia with

    Patel, Shyam A / Cerny, Jan / Gerber, William K / Ramanathan, Muthalagu / Ediriwickrema, Asiri / Tanenbaum, Benjamin / Hutchinson, Lloyd / Meng, Xiuling / Flahive, Julie / Barton, Bruce / Gillis-Smith, Andrew J / Suzuki, Sakiko / Khedr, Salwa / Selove, William / Higgins, Anne W / Miron, Patricia M / Simin, Karl / Woda, Bruce / Gerber, Jonathan M

    EJHaem

    2023  Volume 4, Issue 4, Page(s) 1059–1070

    Abstract: ... ...

    Abstract TP53
    Language English
    Publishing date 2023-09-11
    Publishing country United States
    Document type Journal Article
    ISSN 2688-6146
    ISSN (online) 2688-6146
    DOI 10.1002/jha2.791
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Using brain cell-type-specific protein interactomes to interpret neurodevelopmental genetic signals in schizophrenia.

    Hsu, Yu-Han H / Pintacuda, Greta / Liu, Ruize / Nacu, Eugeniu / Kim, April / Tsafou, Kalliopi / Petrossian, Natalie / Crotty, William / Suh, Jung Min / Riseman, Jackson / Martin, Jacqueline M / Biagini, Julia C / Mena, Daya / Ching, Joshua K T / Malolepsza, Edyta / Li, Taibo / Singh, Tarjinder / Ge, Tian / Egri, Shawn B /
    Tanenbaum, Benjamin / Stanclift, Caroline R / Apffel, Annie M / Carr, Steven A / Schenone, Monica / Jaffe, Jake / Fornelos, Nadine / Huang, Hailiang / Eggan, Kevin C / Lage, Kasper

    iScience

    2023  Volume 26, Issue 5, Page(s) 106701

    Abstract: Genetics have nominated many schizophrenia risk genes and identified convergent signals between schizophrenia and neurodevelopmental disorders. However, functional interpretation of the nominated genes in the relevant brain cell types is often lacking. ... ...

    Abstract Genetics have nominated many schizophrenia risk genes and identified convergent signals between schizophrenia and neurodevelopmental disorders. However, functional interpretation of the nominated genes in the relevant brain cell types is often lacking. We executed interaction proteomics for six schizophrenia risk genes that have also been implicated in neurodevelopment in human induced cortical neurons. The resulting protein network is enriched for common variant risk of schizophrenia in Europeans and East Asians, is down-regulated in layer 5/6 cortical neurons of individuals affected by schizophrenia, and can complement fine-mapping and eQTL data to prioritize additional genes in GWAS loci. A sub-network centered on HCN1 is enriched for common variant risk and contains proteins (HCN4 and AKAP11) enriched for rare protein-truncating mutations in individuals with schizophrenia and bipolar disorder. Our findings showcase brain cell-type-specific interactomes as an organizing framework to facilitate interpretation of genetic and transcriptomic data in schizophrenia and its related disorders.
    Language English
    Publishing date 2023-04-18
    Publishing country United States
    Document type Journal Article
    ISSN 2589-0042
    ISSN (online) 2589-0042
    DOI 10.1016/j.isci.2023.106701
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: STAG2 loss rewires oncogenic and developmental programs to promote metastasis in Ewing sarcoma.

    Adane, Biniam / Alexe, Gabriela / Seong, Bo Kyung A / Lu, Diana / Hwang, Elizabeth E / Hnisz, Denes / Lareau, Caleb A / Ross, Linda / Lin, Shan / Dela Cruz, Filemon S / Richardson, Melissa / Weintraub, Abraham S / Wang, Sarah / Iniguez, Amanda Balboni / Dharia, Neekesh V / Conway, Amy Saur / Robichaud, Amanda L / Tanenbaum, Benjamin / Krill-Burger, John M /
    Vazquez, Francisca / Schenone, Monica / Berman, Jason N / Kung, Andrew L / Carr, Steven A / Aryee, Martin J / Young, Richard A / Crompton, Brian D / Stegmaier, Kimberly

    Cancer cell

    2021  Volume 39, Issue 6, Page(s) 827–844.e10

    Abstract: The core cohesin subunit STAG2 is recurrently mutated in Ewing sarcoma but its biological role is less clear. Here, we demonstrate that cohesin complexes containing STAG2 occupy enhancer and polycomb repressive complex (PRC2)-marked regulatory regions. ... ...

    Abstract The core cohesin subunit STAG2 is recurrently mutated in Ewing sarcoma but its biological role is less clear. Here, we demonstrate that cohesin complexes containing STAG2 occupy enhancer and polycomb repressive complex (PRC2)-marked regulatory regions. Genetic suppression of STAG2 leads to a compensatory increase in cohesin-STAG1 complexes, but not in enhancer-rich regions, and results in reprogramming of cis-chromatin interactions. Strikingly, in STAG2 knockout cells the oncogenic genetic program driven by the fusion transcription factor EWS/FLI1 was highly perturbed, in part due to altered enhancer-promoter contacts. Moreover, loss of STAG2 also disrupted PRC2-mediated regulation of gene expression. Combined, these transcriptional changes converged to modulate EWS/FLI1, migratory, and neurodevelopmental programs. Finally, consistent with clinical observations, functional studies revealed that loss of STAG2 enhances the metastatic potential of Ewing sarcoma xenografts. Our findings demonstrate that STAG2 mutations can alter chromatin architecture and transcriptional programs to promote an aggressive cancer phenotype.
    MeSH term(s) Animals ; Bone Neoplasms/genetics ; Bone Neoplasms/pathology ; Cell Cycle Proteins/genetics ; Cell Cycle Proteins/metabolism ; Cell Line, Tumor ; Cell Movement/genetics ; Chromosomal Proteins, Non-Histone/metabolism ; Enhancer Elements, Genetic ; Female ; Gene Expression Regulation, Neoplastic ; Homeodomain Proteins/genetics ; Homeodomain Proteins/metabolism ; Humans ; Mice, Inbred NOD ; Nuclear Proteins/genetics ; Nuclear Proteins/metabolism ; Oncogene Proteins, Fusion/genetics ; POU Domain Factors/genetics ; POU Domain Factors/metabolism ; Polycomb Repressive Complex 2/genetics ; Polycomb Repressive Complex 2/metabolism ; Promoter Regions, Genetic ; Proto-Oncogene Protein c-fli-1/genetics ; RNA-Binding Protein EWS/genetics ; Sarcoma, Ewing/genetics ; Sarcoma, Ewing/pathology ; Xenograft Model Antitumor Assays ; Zebrafish/genetics ; Cohesins ; Mice
    Chemical Substances Cell Cycle Proteins ; Chromosomal Proteins, Non-Histone ; EWS-FLI fusion protein ; Homeodomain Proteins ; Nuclear Proteins ; Oncogene Proteins, Fusion ; POU Domain Factors ; Proto-Oncogene Protein c-fli-1 ; RNA-Binding Protein EWS ; STAG1 protein, human ; STAG2 protein, human ; transcription factor Brn-2 ; Polycomb Repressive Complex 2 (EC 2.1.1.43)
    Language English
    Publishing date 2021-06-14
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2078448-X
    ISSN 1878-3686 ; 1535-6108
    ISSN (online) 1878-3686
    ISSN 1535-6108
    DOI 10.1016/j.ccell.2021.05.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: SOX9 drives WNT pathway activation in prostate cancer.

    Ma, Fen / Ye, Huihui / He, Housheng Hansen / Gerrin, Sean J / Chen, Sen / Tanenbaum, Benjamin A / Cai, Changmeng / Sowalsky, Adam G / He, Lingfeng / Wang, Hongyun / Balk, Steven P / Yuan, Xin

    The Journal of clinical investigation

    2016  Volume 126, Issue 5, Page(s) 1745–1758

    Abstract: The transcription factor SOX9 is critical for prostate development, and dysregulation of SOX9 is implicated in prostate cancer (PCa). However, the SOX9-dependent genes and pathways involved in both normal and neoplastic prostate epithelium are largely ... ...

    Abstract The transcription factor SOX9 is critical for prostate development, and dysregulation of SOX9 is implicated in prostate cancer (PCa). However, the SOX9-dependent genes and pathways involved in both normal and neoplastic prostate epithelium are largely unknown. Here, we performed SOX9 ChIP sequencing analysis and transcriptome profiling of PCa cells and determined that SOX9 positively regulates multiple WNT pathway genes, including those encoding WNT receptors (frizzled [FZD] and lipoprotein receptor-related protein [LRP] family members) and the downstream β-catenin effector TCF4. Analyses of PCa xenografts and clinical samples both revealed an association between the expression of SOX9 and WNT pathway components in PCa. Finally, treatment of SOX9-expressing PCa cells with a WNT synthesis inhibitor (LGK974) reduced WNT pathway signaling in vitro and tumor growth in murine xenograft models. Together, our data indicate that SOX9 expression drives PCa by reactivating the WNT/β-catenin signaling that mediates ductal morphogenesis in fetal prostate and define a subgroup of patients who would benefit from WNT-targeted therapy.
    MeSH term(s) Animals ; Basic Helix-Loop-Helix Leucine Zipper Transcription Factors/genetics ; Basic Helix-Loop-Helix Leucine Zipper Transcription Factors/metabolism ; Cell Line, Tumor ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; Mice ; Mice, Nude ; Mice, SCID ; Neoplasm Proteins/genetics ; Neoplasm Proteins/metabolism ; Prostatic Neoplasms/drug therapy ; Prostatic Neoplasms/genetics ; Prostatic Neoplasms/metabolism ; Prostatic Neoplasms/pathology ; Pyrazines/pharmacology ; Pyridines/pharmacology ; SOX9 Transcription Factor/biosynthesis ; SOX9 Transcription Factor/genetics ; Transcription Factor 4 ; Transcription Factors/genetics ; Transcription Factors/metabolism ; Wnt Signaling Pathway ; Xenograft Model Antitumor Assays
    Chemical Substances Basic Helix-Loop-Helix Leucine Zipper Transcription Factors ; LGK974 ; Neoplasm Proteins ; Pyrazines ; Pyridines ; SOX9 Transcription Factor ; SOX9 protein, human ; TCF4 protein, human ; Transcription Factor 4 ; Transcription Factors
    Language English
    Publishing date 2016-05-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3067-3
    ISSN 1558-8238 ; 0021-9738
    ISSN (online) 1558-8238
    ISSN 0021-9738
    DOI 10.1172/JCI78815
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Genome-scale analysis identifies paralog lethality as a vulnerability of chromosome 1p loss in cancer.

    Viswanathan, Srinivas R / Nogueira, Marina F / Buss, Colin G / Krill-Burger, John M / Wawer, Mathias J / Malolepsza, Edyta / Berger, Ashton C / Choi, Peter S / Shih, Juliann / Taylor, Alison M / Tanenbaum, Benjamin / Pedamallu, Chandra Sekhar / Cherniack, Andrew D / Tamayo, Pablo / Strathdee, Craig A / Lage, Kasper / Carr, Steven A / Schenone, Monica / Bhatia, Sangeeta N /
    Vazquez, Francisca / Tsherniak, Aviad / Hahn, William C / Meyerson, Matthew

    Nature genetics

    2018  Volume 50, Issue 7, Page(s) 937–943

    Abstract: Functional redundancy shared by paralog genes may afford protection against genetic perturbations, but it can also result in genetic vulnerabilities due to mutual ... ...

    Abstract Functional redundancy shared by paralog genes may afford protection against genetic perturbations, but it can also result in genetic vulnerabilities due to mutual interdependency
    MeSH term(s) Animals ; Cell Line, Tumor ; Cell Nucleus/genetics ; Chromosomes, Human, Pair 1 ; Exons/genetics ; Female ; Gene Deletion ; HEK293 Cells ; Humans ; Karyopherins/genetics ; Mice ; Mice, Nude ; Neoplasms/genetics ; Nuclear Proteins/genetics ; RNA Splicing/genetics ; RNA, Small Interfering/genetics
    Chemical Substances Karyopherins ; Nuclear Proteins ; RNA, Small Interfering
    Language English
    Publishing date 2018-06-28
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1108734-1
    ISSN 1546-1718 ; 1061-4036
    ISSN (online) 1546-1718
    ISSN 1061-4036
    DOI 10.1038/s41588-018-0155-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: ZBTB33

    Beauchamp, Ellen M / Leventhal, Matthew / Bernard, Elsa / Hoppe, Emma R / Todisco, Gabriele / Creignou, Maria / Gallì, Anna / Castellano, Cecilia A / McConkey, Marie / Tarun, Akansha / Wong, Waihay / Schenone, Monica / Stanclift, Caroline / Tanenbaum, Benjamin / Malolepsza, Edyta / Nilsson, Björn / Bick, Alexander G / Weinstock, Joshua S / Miller, Mendy /
    Niroula, Abhishek / Dunford, Andrew / Taylor-Weiner, Amaro / Wood, Timothy / Barbera, Alex / Anand, Shankara / Psaty, Bruce M / Desai, Pinkal / Cho, Michael H / Johnson, Andrew D / Loos, Ruth / MacArthur, Daniel G / Lek, Monkol / Neuberg, Donna S / Lage, Kasper / Carr, Steven A / Hellstrom-Lindberg, Eva / Malcovati, Luca / Papaemmanuil, Elli / Stewart, Chip / Getz, Gad / Bradley, Robert K / Jaiswal, Siddhartha / Ebert, Benjamin L

    Blood cancer discovery

    2021  Volume 2, Issue 5, Page(s) 500–517

    Abstract: Clonal hematopoiesis results from somatic mutations in cancer driver genes in hematopoietic stem cells. We sought to identify novel drivers of clonal expansion using an unbiased analysis of sequencing data from 84,683 persons and identified common ... ...

    Abstract Clonal hematopoiesis results from somatic mutations in cancer driver genes in hematopoietic stem cells. We sought to identify novel drivers of clonal expansion using an unbiased analysis of sequencing data from 84,683 persons and identified common mutations in the 5-methylcytosine reader,
    MeSH term(s) Animals ; Clonal Hematopoiesis ; Hematopoiesis/genetics ; Hematopoietic Stem Cells ; Humans ; Mice ; Myelodysplastic Syndromes/genetics ; RNA Splicing/genetics ; Transcription Factors/genetics
    Chemical Substances Transcription Factors ; Zbtb33 protein, mouse
    Language English
    Publishing date 2021-07-14
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 3028898-8
    ISSN 2643-3249 ; 2643-3230
    ISSN (online) 2643-3249
    ISSN 2643-3230
    DOI 10.1158/2643-3230.BCD-20-0224
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Neuronal differentiation and cell-cycle programs mediate response to BET-bromodomain inhibition in MYC-driven medulloblastoma.

    Bandopadhayay, Pratiti / Piccioni, Federica / O'Rourke, Ryan / Ho, Patricia / Gonzalez, Elizabeth M / Buchan, Graham / Qian, Kenin / Gionet, Gabrielle / Girard, Emily / Coxon, Margo / Rees, Matthew G / Brenan, Lisa / Dubois, Frank / Shapira, Ofer / Greenwald, Noah F / Pages, Melanie / Balboni Iniguez, Amanda / Paolella, Brenton R / Meng, Alice /
    Sinai, Claire / Roti, Giovanni / Dharia, Neekesh V / Creech, Amanda / Tanenbaum, Benjamin / Khadka, Prasidda / Tracy, Adam / Tiv, Hong L / Hong, Andrew L / Coy, Shannon / Rashid, Rumana / Lin, Jia-Ren / Cowley, Glenn S / Lam, Fred C / Goodale, Amy / Lee, Yenarae / Schoolcraft, Kathleen / Vazquez, Francisca / Hahn, William C / Tsherniak, Aviad / Bradner, James E / Yaffe, Michael B / Milde, Till / Pfister, Stefan M / Qi, Jun / Schenone, Monica / Carr, Steven A / Ligon, Keith L / Kieran, Mark W / Santagata, Sandro / Olson, James M / Gokhale, Prafulla C / Jaffe, Jacob D / Root, David E / Stegmaier, Kimberly / Johannessen, Cory M / Beroukhim, Rameen

    Nature communications

    2019  Volume 10, Issue 1, Page(s) 2400

    Abstract: BET-bromodomain inhibition (BETi) has shown pre-clinical promise for MYC-amplified medulloblastoma. However, the mechanisms for its action, and ultimately for resistance, have not been fully defined. Here, using a combination of expression profiling, ... ...

    Abstract BET-bromodomain inhibition (BETi) has shown pre-clinical promise for MYC-amplified medulloblastoma. However, the mechanisms for its action, and ultimately for resistance, have not been fully defined. Here, using a combination of expression profiling, genome-scale CRISPR/Cas9-mediated loss of function and ORF/cDNA driven rescue screens, and cell-based models of spontaneous resistance, we identify bHLH/homeobox transcription factors and cell-cycle regulators as key genes mediating BETi's response and resistance. Cells that acquire drug tolerance exhibit a more neuronally differentiated cell-state and expression of lineage-specific bHLH/homeobox transcription factors. However, they do not terminally differentiate, maintain expression of CCND2, and continue to cycle through S-phase. Moreover, CDK4/CDK6 inhibition delays acquisition of resistance. Therefore, our data provide insights about the mechanisms underlying BETi effects and the appearance of resistance and support the therapeutic use of combined cell-cycle inhibitors with BETi in MYC-amplified medulloblastoma.
    MeSH term(s) Animals ; Azepines/pharmacology ; Basic Helix-Loop-Helix Transcription Factors/drug effects ; Basic Helix-Loop-Helix Transcription Factors/metabolism ; CRISPR-Cas Systems ; Cell Cycle/drug effects ; Cell Cycle Proteins/drug effects ; Cell Cycle Proteins/metabolism ; Cell Line, Tumor ; Cell Lineage ; Cerebellar Neoplasms/drug therapy ; Cerebellar Neoplasms/genetics ; Cyclin D2/drug effects ; Cyclin D2/metabolism ; Cyclin-Dependent Kinase 4/antagonists & inhibitors ; Cyclin-Dependent Kinase 6/antagonists & inhibitors ; Drug Resistance, Neoplasm ; Gene Expression Profiling ; Humans ; Medulloblastoma/drug therapy ; Medulloblastoma/genetics ; Mice ; Neural Stem Cells/drug effects ; Neural Stem Cells/metabolism ; Neurogenesis/drug effects ; Proteins/antagonists & inhibitors ; Proto-Oncogene Proteins c-myc/genetics ; S Phase/drug effects ; Triazoles/pharmacology
    Chemical Substances (+)-JQ1 compound ; Azepines ; Basic Helix-Loop-Helix Transcription Factors ; Cell Cycle Proteins ; Cyclin D2 ; MYC protein, human ; Proteins ; Proto-Oncogene Proteins c-myc ; Triazoles ; bromodomain and extra-terminal domain protein, human ; Cyclin-Dependent Kinase 4 (EC 2.7.11.22) ; Cyclin-Dependent Kinase 6 (EC 2.7.11.22)
    Language English
    Publishing date 2019-06-03
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; 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/s41467-019-10307-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top