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Schrier I, Slotki-Itzchakov O, Elkis Y, Most-Menachem N, Adato O, Fitoussi-Allouche D, Shpungin S, Unger R, Nir U. Fer governs mTORC1 regulating pathways and sustains viability of pancreatic ductal adenocarcinoma cells. Front Oncol 2024; 14:1427029. [PMID: 39206154 PMCID: PMC11349523 DOI: 10.3389/fonc.2024.1427029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 07/29/2024] [Indexed: 09/04/2024] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the deadliest cancers with a high percentage of morbidity. The deciphering and identification of novel targets and tools for intervening with its adverse progression are therefore of immense importance. To address this goal we adopted a specific inhibitor of the intracellular tyrosine kinase Fer, whose expression level is upregulated in PDAC tumors, and is associated with poor prognosis of patients. Subjecting PDAC cells to the E260-Fer inhibitor, unraveled its simultaneous effects on the mitochondria, and on a non-mitochondrial ERK1/2 regulatory cascade. E260 caused severe mitochondrial deformation, resulting in cellular- aspartate and ATP depletion, and followed by the activation of the metabolic sensor AMPK. This led to the phosphorylation and deactivation of the bona fide AMPK substrate, RAPTOR, which serves as a positive regulator of the mTORC1 metabolic hub. Accordingly, this resulted in the inhibition of the mTORC1 activity. In parallel, E260 downregulated the activation state of the ERK1/2 kinases, and their ability to neutralize the mTORC1 suppressor TSC2, thereby accentuating the inhibition of mTORC1. Importantly, both activation of AMPK and downregulation of ERK1/2 and mTORC1 were also achieved upon the knockdown of Fer, corroborating the regulatory role of Fer in these processes. Concomitantly, in PDAC tumors and not in healthy pancreatic tissues, the expression levels of Fer demonstrate moderate but statistically significant positive correlation with the expression levels of mTOR and its downstream effector LARP1. Finally, targeting the Fer driven activation of mTORC1, culminated in necrotic death of the treated PDAC cells, envisaging a new intervention tool for the challenging PDAC disease.
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Affiliation(s)
- Ilan Schrier
- Department of Surgery, Rabin Medical Center, Petah Tikva, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Orel Slotki-Itzchakov
- The Mina and Everard Goodman Faculty of Life-Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Yoav Elkis
- The Mina and Everard Goodman Faculty of Life-Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Nofar Most-Menachem
- The Mina and Everard Goodman Faculty of Life-Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Orit Adato
- The Mina and Everard Goodman Faculty of Life-Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | | | - Sally Shpungin
- The Mina and Everard Goodman Faculty of Life-Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Ron Unger
- The Mina and Everard Goodman Faculty of Life-Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Uri Nir
- The Mina and Everard Goodman Faculty of Life-Sciences, Bar-Ilan University, Ramat-Gan, Israel
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Karim F, Amin A, Liu M, Vishnuvardhan N, Amin S, Shabbir R, Swed B, Khan U. Role of Checkpoint Inhibitors in the Management of Gastroesophageal Cancers. Cancers (Basel) 2023; 15:4099. [PMID: 37627127 PMCID: PMC10452271 DOI: 10.3390/cancers15164099] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/09/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
PURPOSE This article reviews the essential clinical trials that have led to these immunotherapy approvals and explores the use of predictive biomarkers, such as PD-L1 expression and MSI status, to identify patients who are most likely to benefit from immunotherapies. METHODS This case review series describe findings from different clinical trials and contribute to the evolving understanding of the role of CPIs in managing advanced gastroesophageal cancers and may lead to improved treatment options and patient outcomes. Ongoing clinical trials also hold promise for expanding treatment options and improving patient outcomes in the future. METHODS The systematic review followed the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The protocol has not been registered. A systematic literature review was conducted to identify relevant clinical trials and studies that describe the role of immune checkpoint inhibitors in managing advanced gastroesophageal cancers. Electronic database (PubMed, Clinicaltrials.gov, Society of Immunotherapy of Cancer, Aliment Pharmacology & Therapeutics, BMC cancer, Molecular Cancer Research, Nature Reviews Molecular Cell Biology, American Association for Cancer Research, Science, Nature, Cancer Discovery, Journal of the National Cancer Institute, Advanced Immunology, Oncotarget, Nature Medicine, Nature Genetics, Gut, Pathology and Oncology Research, Journal of Clinical Oncology, The New England Journal of Medicine, Gastrointestinal oncology, JAMA Oncology, Journal of Gastrointestinal Oncology, Current Oncology, Annals of Oncology, The Lancet, JCO Oncology Practice, Future Oncology, Gastric Cancer, CA: A Cancer Journal for Clinicians, American Journal of Gastroenterology, Gastroenterology, Journal of the National Cancer Institute, International Journal of Epidemiology, Helicobacter, Gastroenterology Review) were searched using a combination of relevant keywords and MESH terms. The search encompassed articles published up to 5/2023. Additionally, manual searches of reference lists of selected articles and pertinent review papers were conducted to ensure comprehensive coverage of relevant studies. Studies were included if they provided insights into clinical trials evaluating the efficacy and safety of CPIs in treating advanced gastroesophageal cancers. Relevant case reviews and trials exploring combination therapies involving CPIs were also considered. Articles discussed in the utilization of predictive biomarkers were included to assess their impact on treatment outcomes. Data from selected studies were extracted to inform the narrative review. Key findings were summarized, including clinical trial designs, patient populations, treatment regimens, response rates, progression-free survival (PFS), overall survival (OS), and adverse events. The role of predictive biomarkers, particularly PD-L1 expression and MSI status, in identifying patients likely to benefit from CPIs was critically evaluated based on study results. Ongoing clinical trials investigating novel combination strategies and exploring the broader scope of CPIs in gastroesophageal cancers were also highlighted. The collected data were synthesized to provide a comprehensive overview of the crucial clinical trials that have contributed to the approval of CPIs for advanced gastroesophageal cancers. The role of CPIs in different lines of therapy, including first-line regimens, was discussed. Furthermore, the evolving landscape of predictive biomarkers was examined, emphasizing their potential significance in optimizing patient selection for CPI therapy. Ongoing clinical trials were reviewed to underscore the continuous efforts in expanding treatment options and improving patient outcomes in the future.
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Affiliation(s)
- Frederic Karim
- Internal Medicine, New York-Presbyterian Brooklyn Methodist Hospital, 506 6th Street, Brooklyn, NY 11215, USA; (A.A.); (M.L.); (S.A.); (R.S.)
| | - Adina Amin
- Internal Medicine, New York-Presbyterian Brooklyn Methodist Hospital, 506 6th Street, Brooklyn, NY 11215, USA; (A.A.); (M.L.); (S.A.); (R.S.)
| | - Marie Liu
- Internal Medicine, New York-Presbyterian Brooklyn Methodist Hospital, 506 6th Street, Brooklyn, NY 11215, USA; (A.A.); (M.L.); (S.A.); (R.S.)
| | - Nivetha Vishnuvardhan
- Hematology/Oncology, New York-Presbyterian Brooklyn Methodist Hospital, 506 6th Street, Brooklyn, NY 11215, USA;
| | - Saif Amin
- Internal Medicine, New York-Presbyterian Brooklyn Methodist Hospital, 506 6th Street, Brooklyn, NY 11215, USA; (A.A.); (M.L.); (S.A.); (R.S.)
| | - Raffey Shabbir
- Internal Medicine, New York-Presbyterian Brooklyn Methodist Hospital, 506 6th Street, Brooklyn, NY 11215, USA; (A.A.); (M.L.); (S.A.); (R.S.)
| | - Brandon Swed
- Hematology/Oncology, Weill Cornell Medicine, 515 6th Street, Brooklyn, NY 11215, USA; (B.S.); (U.K.)
| | - Uqba Khan
- Hematology/Oncology, Weill Cornell Medicine, 515 6th Street, Brooklyn, NY 11215, USA; (B.S.); (U.K.)
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3
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Karayiannis I, Martinez-Gonzalez B, Kontizas E, Kokkota AV, Petraki K, Mentis A, Kollia P, Sgouras DN. Induction of MMP-3 and MMP-9 expression during Helicobacter pylori infection via MAPK signaling pathways. Helicobacter 2023; 28:e12987. [PMID: 37139985 DOI: 10.1111/hel.12987] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/22/2023] [Accepted: 04/19/2023] [Indexed: 05/05/2023]
Abstract
BACKGROUND AND AIMS Helicobacter pylori (H. pylori)-induced gastric pathology involves remodeling of extracellular matrix mediated by aberrant activity of matrix metalloproteinases (MMPs). We have previously shown that in vitro H. pylori infection leads to MMP-3 and MMP-9 overexpression, associated with phosphorylation of bacterial oncoprotein CagA. We extended these findings in an in vivo model of H. pylori infection and further assessed the involvement of MAPK pathways in MMP expression. MATERIALS AND METHODS C57BL/6 mice were infected with H. pylori strains HPARE, HPARE ΔCagA, and SS1, for 6 and 9 months. Transcriptional expression of Mmp-3 and Mmp-9 was evaluated via qPCR while respective protein levels in the gastric mucosa were determined immunohistochemically. Epithelial cell lines AGS and GES-1 were infected with H. pylori strain P12 in the presence of chemical inhibitors of JNK, ERK1/2, and p38 pathways, for 24 h. mRNA and protein expression of MMP-3 and MMP-9 were determined via qPCR and Western blot, respectively. RESULTS We observed transcriptional activation of Mmp-3 and Mmp-9 as well as aberrant MMP-3 and MMP-9 protein expression in murine gastric tissue following H. pylori infection. CagA expression was associated with MMP upregulation, particularly during the early time points of infection. We found that inhibition of ERK1/2 resulted in reduced mRNA and protein expression of MMP-3 and MMP-9 during H. pylori infection, in both cell lines. Expressed protein levels of both MMPs were also found reduced in the presence of JNK pathway inhibitors in both cell lines. However, p38 inhibition resulted in a more complex effect, probably attributed to the accumulation of phospho-p38 and increased phospho-ERK1/2 activity due to crosstalk between MAPK pathways. CONCLUSIONS H. pylori colonization leads to the upregulation of MMP-3 and MMP-9 in vivo, which primarily involves ERK1/2 and JNK pathways. Therefore, their inhibition may potentially offer a protective effect against gastric carcinogenesis and metastasis.
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Affiliation(s)
- Ioannis Karayiannis
- Laboratory of Medical Microbiology, Hellenic Pasteur Institute, Athens, Greece
- Department of Genetics and Biotechnology, Faculty of Biology, School of Physical Sciences, University of Athens, Athens, Greece
| | | | | | | | | | - Andreas Mentis
- Laboratory of Medical Microbiology, Hellenic Pasteur Institute, Athens, Greece
| | - Panagoula Kollia
- Department of Genetics and Biotechnology, Faculty of Biology, School of Physical Sciences, University of Athens, Athens, Greece
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Responses to the Tepotinib in Gastric Cancers with MET Amplification or MET Exon 14 Skipping Mutations and High Expression of Both PD-L1 and CD44. Cancers (Basel) 2022; 14:cancers14143444. [PMID: 35884507 PMCID: PMC9318186 DOI: 10.3390/cancers14143444] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/30/2022] [Accepted: 07/13/2022] [Indexed: 02/01/2023] Open
Abstract
Both MET exon 14 skipping mutation (METex14SM) and high copy-number variation (CNV) lead to enhanced carcinogenesis; additionally, programmed-death ligand 1 (PD-L1) is often upregulated in cancers. In this study, we characterized the expression of MET (including METex14SM), PD-L1, and CD44 in human gastric cancer (GC) cells as well as the differential susceptibility of these cells to tepotinib. Tepotinib treatments inhibited the growth of five GC cells in a dose-dependent manner with a concomitant induction of cell death. Tepotinib treatments also significantly reduced the expression of phospho-MET, total MET, c-Myc, VEGFR2, and Snail protein in SNU620, MKN45, and Hs746T cells. Notably, tepotinib significantly reduced the expression of CD44 and PD-L1 in METex14SM Hs746T cells. By contrast, tepotinib was only slightly active against SNU638 and KATO III cells. Migration was reduced to a greater extent in the tepotinib-treated group than in the control group. Tepotinib may have therapeutic effects on c-MET-amplified GC, a high expression of both PD-L1 and CD44, and METex14SM. Clinical studies are needed to confirm these therapeutic effects.
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5
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Harrold E, Corrigan L, Barry S, Lowery M. Targeting MET amplification in Gastro-oesophageal (GO) malignancies and overcoming MET inhibitor resistance: challenges and opportunities. Expert Rev Gastroenterol Hepatol 2022; 16:601-624. [PMID: 35757852 DOI: 10.1080/17474124.2022.2093185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION MET, the hepatocyte growth factor receptor is amplified in 8% of gastroesophageal (GO) malignancies and associated with poor prognosis. Therapeutic targeting of MET amplification and MET mutations has the potential to improve outcomes for patients with GO cancers (GOC). AREAS COVERED The efficacy of MET inhibition (METi) in preclinical studies has yet to translate into meaningful improvements in the treatment paradigm for unselected GOC. MET amplification has been proposed as a superior modality for patient selection; however even if confirmed, frequency and duration of response to METi are limited by rapid activation of primary and secondary resistance pathways. These observations illustrate the challenges inherent in the application of precision oncology predicated on the theory of oncogenic addiction. EXPERT OPINION A standardized definition of MET positivity is critical to enhance patient selection. Early successes targeting the METex14 skipping mutation demonstrate the potent therapeutic effects of METi in a clearly molecularly defined cohort. There is robust preclinical rationale and early-phase data supporting exploitation of immune system interaction with MET. Pragmatic investigation of rational therapeutic combinations based on molecular profiling of both primary and metastatic disease sites with sequential circulating tumor DNA analysis can inform successful clinical development of METi agents in GOC.
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Affiliation(s)
- Emily Harrold
- Medical Oncology Department, Mater Private Hospital Dublin, Leinster, Ireland.,Trinity St James Cancer Institute, Trinity College Dublin, Leinster, Ireland
| | - Lynda Corrigan
- Trinity St James Cancer Institute, Trinity College Dublin, Leinster, Ireland.,Medical Oncology Department, Tallaght/AMNCH Hospital Dublin, Leinster, Ireland
| | - Simon Barry
- Medical Oncology Department, St James University Hospital Dublin, Leinster, Ireland
| | - Maeve Lowery
- Trinity St James Cancer Institute, Trinity College Dublin, Leinster, Ireland.,Medical Oncology Department, St James University Hospital Dublin, Leinster, Ireland
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6
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Roviello G, Catalano M, Iannone LF, Marano L, Brugia M, Rossi G, Aprile G, Antonuzzo L. Current status and future perspectives in HER2 positive advanced gastric cancer. Clin Transl Oncol 2022; 24:981-996. [PMID: 35091998 DOI: 10.1007/s12094-021-02760-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 12/13/2021] [Indexed: 02/06/2023]
Abstract
Gastric cancer is one of the most common malignancy worldwide with a prognosis less than 1 year in unresectable or metastatic disease. HER2 expression is the main biomarker to lead the addition of trastuzumab to first line systemic chemotherapy improving the overall survival in advanced HER2-positivegastric adenocarcinoma. The inevitable development of resistance to trastuzumab remains a great problem inasmuch several treatment strategies that have proven effective in breast cancer failed to show clinical benefit in advanced gastric cancer. In this review, we summarize the available data on the mechanisms underlying primary and secondary resistance toHER2-targeted therapy and current challenges in the treatment of HER2-positive advanced gastric cancer refractory to trastuzumab. Further, we describe the prognostic value of new non-invasive screening techniques, the current development of novel agents such us HER2 antibody-drug conjugates and bispecific antibodies, and the strategies with antitumor activity on going.
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Affiliation(s)
- G Roviello
- Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, Viale Pieraccini, 6, 50139, Florence, Italy.
| | - M Catalano
- School of Human Health Sciences, University of Florence, Largo Brambilla 3, 50134, Florence, Italy
| | - L F Iannone
- Department of Health Science, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - L Marano
- Department of Medical, Surgical and NeuroSciences, Section of Surgery, Azienda Ospedaliera Universitaria Senese, University of Siena, Siena, Italy
| | - M Brugia
- Clinical Oncology Unit, Careggi University Hospital, Florence, Italy
| | - G Rossi
- Clinical Oncology Unit, Careggi University Hospital, Florence, Italy
| | - G Aprile
- Department of Oncology, San Bortolo General Hospital, AULSS8 Berica, Vicenza, Italy
| | - L Antonuzzo
- Department of Experimental and Clinical Medicine, University of Florence, 50134, Florence, Italy.,Medical Oncology Unit, Careggi University Hospital, 50134, Florence, Italy
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7
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Vervoort SJ, Devlin JR, Kwiatkowski N, Teng M, Gray NS, Johnstone RW. Targeting transcription cycles in cancer. Nat Rev Cancer 2022; 22:5-24. [PMID: 34675395 DOI: 10.1038/s41568-021-00411-8] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/09/2021] [Indexed: 12/15/2022]
Abstract
Accurate control of gene expression is essential for normal development and dysregulation of transcription underpins cancer onset and progression. Similar to cell cycle regulation, RNA polymerase II-driven transcription can be considered as a unidirectional multistep cycle, with thousands of unique transcription cycles occurring in concert within each cell. Each transcription cycle comprises recruitment, initiation, pausing, elongation, termination and recycling stages that are tightly controlled by the coordinated action of transcriptional cyclin-dependent kinases and their cognate cyclins as well as the opposing activity of transcriptional phosphatases. Oncogenic dysregulation of transcription can entail defective control of gene expression, either at select loci or more globally, impacting a large proportion of the genome. The resultant dependency on the core-transcriptional machinery is believed to render 'transcriptionally addicted' cancers sensitive to perturbation of transcription. Based on these findings, small molecules targeting transcriptional cyclin-dependent kinases and associated proteins hold promise for the treatment of cancer. Here, we utilize the transcription cycles concept to explain how dysregulation of these finely tuned gene expression processes may drive tumorigenesis and how therapeutically beneficial responses may arise from global or selective transcriptional perturbation. This conceptual framework helps to explain tumour-selective transcriptional dependencies and facilitates the rational design of combination therapies.
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Affiliation(s)
- Stephin J Vervoort
- Gene Regulation Laboratory, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Jennifer R Devlin
- Gene Regulation Laboratory, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Nicholas Kwiatkowski
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Mingxing Teng
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Nathanael S Gray
- Department of Chemical and Systems Biology, CHEM-H and SCI, Stanford Medical School, Stanford University, Stanford, CA, USA.
| | - Ricky W Johnstone
- Gene Regulation Laboratory, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.
- The Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia.
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8
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Pandian J, Ganesan K. Delineation of gastric tumors with activated ERK/MAPK signaling cascades for the development of targeted therapeutics. Exp Cell Res 2022; 410:112956. [PMID: 34864005 DOI: 10.1016/j.yexcr.2021.112956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 11/05/2021] [Accepted: 12/01/2021] [Indexed: 11/04/2022]
Abstract
The ERK/MAPK signaling pathway is activated in various cancers including gastric cancer. Targeting the ERK/MAPK/MEK pathway has been considered as a promising strategy for cancer therapy. However, MEK inhibition leads to a series of resistance mechanisms due to mutations in MEK, elevated expression of RAS or RAF proteins and activation of the associated signaling pathways. In the present study, ERK/MAPK pathway specific gene signatures were identified to be highly activated in intestinal subtype gastric tumors. Inhibition of ERK/MAPK pathway with the inhibitor PD98059 in gastric cancer cell lines by in vitro signaling pathway and genome-wide expression profiling revealed the associated signaling pathways. Functional genomic investigation of the ERK/MAPK regulated genes reveals the association of ERK/MAPK pathway with E2F, Myc, SOX-2, TGF-β, OCT4 and Notch pathways in gastric cancer cells. Of these, E2F, Myc and SOX-2 pathways are activated in intestinal subtype gastric tumors and TGF-β, OCT4, Notch pathways are activated in diffuse subtype gastric tumors. Further, the mutational load of gastric tumors was found to have association and correlation with the activation pattern of ERK/MAPK pathways across gastric tumors. ERK/MAPK activation was also found to represent the EBV and MSI activated subtypes of gastric tumors. Identification of potent drug candidates inhibiting the ERK/MAPK and associated pathways would pave a way for developing the targeted therapeutics for a subset of gastric tumors with activated ERK/MAPK signaling cascade.
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Affiliation(s)
- Jaishree Pandian
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India.
| | - Kumaresan Ganesan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India.
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9
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Moati E, Taly V, Garinet S, Didelot A, Taieb J, Laurent-Puig P, Zaanan A. Role of Circulating Tumor DNA in Gastrointestinal Cancers: Current Knowledge and Perspectives. Cancers (Basel) 2021; 13:4743. [PMID: 34638228 PMCID: PMC8507552 DOI: 10.3390/cancers13194743] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/06/2021] [Accepted: 09/18/2021] [Indexed: 12/21/2022] Open
Abstract
Gastrointestinal (GI) cancers are major health burdens worldwide and biomarkers are needed to improve the management of these diseases along their evolution. Circulating tumor DNA (ctDNA) is a promising non-invasive blood and other bodily-fluid-based biomarker in cancer management that can help clinicians in various cases for the detection, diagnosis, prognosis, monitoring and personalization of treatment in digestive oncology. In addition to the well-studied prognostic role of ctDNA, the main real-world applications appear to be the assessment of minimal residual disease to further guide adjuvant therapy and predict relapse, but also the monitoring of clonal evolution to tailor treatments in metastatic setting. Other challenges such as predicting response to treatment including immune checkpoint inhibitors could also be among the potential applications of ctDNA. Although the level of advancement of ctDNA development in the different tumor localizations is still inhomogeneous, it might be now reliable enough to be soon used in clinical routine for colorectal cancers and shows promising results in other GI cancers.
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Affiliation(s)
- Emilie Moati
- Department of Gastroenterology and Digestive Oncology, Institut du Cancer Paris Carpem, Assistance Publique des Hôpitaux de Paris, European Georges Pompidou Hospital, 75015 Paris, France; (E.M.); (J.T.)
| | - Valerie Taly
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Centre National de la Recherche Scientifique, Sorbonne Université, USPC, Université de Paris, Equipe Labellisée Ligue Nationale Contre le Cancer, CNRS SNC 5096, 75006 Paris, France; (V.T.); (S.G.); (A.D.); (P.L.-P.)
| | - Simon Garinet
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Centre National de la Recherche Scientifique, Sorbonne Université, USPC, Université de Paris, Equipe Labellisée Ligue Nationale Contre le Cancer, CNRS SNC 5096, 75006 Paris, France; (V.T.); (S.G.); (A.D.); (P.L.-P.)
- Department of Biochemistry, Institut du Cancer Paris Carpem, Assistance Publique des Hôpitaux de Paris, European Georges Pompidou Hospital, 75015 Paris, France
| | - Audrey Didelot
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Centre National de la Recherche Scientifique, Sorbonne Université, USPC, Université de Paris, Equipe Labellisée Ligue Nationale Contre le Cancer, CNRS SNC 5096, 75006 Paris, France; (V.T.); (S.G.); (A.D.); (P.L.-P.)
| | - Julien Taieb
- Department of Gastroenterology and Digestive Oncology, Institut du Cancer Paris Carpem, Assistance Publique des Hôpitaux de Paris, European Georges Pompidou Hospital, 75015 Paris, France; (E.M.); (J.T.)
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Centre National de la Recherche Scientifique, Sorbonne Université, USPC, Université de Paris, Equipe Labellisée Ligue Nationale Contre le Cancer, CNRS SNC 5096, 75006 Paris, France; (V.T.); (S.G.); (A.D.); (P.L.-P.)
| | - Pierre Laurent-Puig
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Centre National de la Recherche Scientifique, Sorbonne Université, USPC, Université de Paris, Equipe Labellisée Ligue Nationale Contre le Cancer, CNRS SNC 5096, 75006 Paris, France; (V.T.); (S.G.); (A.D.); (P.L.-P.)
- Department of Biochemistry, Institut du Cancer Paris Carpem, Assistance Publique des Hôpitaux de Paris, European Georges Pompidou Hospital, 75015 Paris, France
| | - Aziz Zaanan
- Department of Gastroenterology and Digestive Oncology, Institut du Cancer Paris Carpem, Assistance Publique des Hôpitaux de Paris, European Georges Pompidou Hospital, 75015 Paris, France; (E.M.); (J.T.)
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Centre National de la Recherche Scientifique, Sorbonne Université, USPC, Université de Paris, Equipe Labellisée Ligue Nationale Contre le Cancer, CNRS SNC 5096, 75006 Paris, France; (V.T.); (S.G.); (A.D.); (P.L.-P.)
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10
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Guardia T, Eason M, Kontrogianni-Konstantopoulos A. Obscurin: A multitasking giant in the fight against cancer. Biochim Biophys Acta Rev Cancer 2021; 1876:188567. [PMID: 34015411 PMCID: PMC8349851 DOI: 10.1016/j.bbcan.2021.188567] [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] [Received: 03/09/2021] [Revised: 05/03/2021] [Accepted: 05/11/2021] [Indexed: 12/19/2022]
Abstract
Giant obscurins (720-870 kDa), encoded by OBSCN, were originally discovered in striated muscles as cytoskeletal proteins with scaffolding and regulatory roles. Recently though, they have risen to the spotlight as key players in cancer development and progression. Herein, we provide a timely prudent synopsis of the expanse of OBSCN mutations across 16 cancer types. Given the extensive work on OBSCN's role in breast epithelium, we summarize functional studies implicating obscurins as potent tumor suppressors in breast cancer and delve into an in silico analysis of its mutational profile and epigenetic (de)regulation using different dataset platforms and sophisticated computational tools. Lastly, we formally describe the OBSCN-Antisense-RNA-1 gene, which belongs to the long non-coding RNA family and discuss its potential role in modulating OBSCN expression in breast cancer. Collectively, we highlight the escalating involvement of obscurins in cancer biology and outline novel potential mechanisms of OBSCN (de)regulation that warrant further investigation.
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Affiliation(s)
- Talia Guardia
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Matthew Eason
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Aikaterini Kontrogianni-Konstantopoulos
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, USA.
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Roviello G, Aprile G, D'Angelo A, Iannone LF, Roviello F, Polom K, Mini E, Catalano M. Human epidermal growth factor receptor 2 (HER2) in advanced gastric cancer: where do we stand? Gastric Cancer 2021; 24:765-779. [PMID: 33742317 DOI: 10.1007/s10120-021-01182-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/10/2021] [Indexed: 02/07/2023]
Abstract
Gastric cancer is one of the most common malignancy worldwide. In unresectable or metastatic disease, the prognosis is poor and in generally less than a year. HER2 expression remains an important biomarker to lead the addition of trastuzumab to first-line systemic chemotherapy in unresectable or metastatic gastroesophageal adenocarcinoma. To date, a major issue is represented by resistance to trastuzumab developed during treatment, considering the not improved outcomes in this molecular subtype of gastroesophageal adenocarcinoma to other HER2 target strategies. In this review, we summarize the available data on the mechanisms underlying primary and secondary resistance to HER2-targeted therapy and current challenges in the treatment of HER2-positive advanced gastric cancer refractory to trastuzumab. Furthermore, we describe the prognostic value of new non-invasive screening methods, under development novel agents (e.g., HER2 antibody-drug conjugates and bispecific antibodies) and strategies with antitumor activity in early studies.
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Affiliation(s)
- Giandomenico Roviello
- Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, Viale Pieraccini, 6, 50139, Florence, Italy.
| | - Giuseppe Aprile
- Department of Oncology, San Bortolo General Hospital, Vicenza, Italy
| | - Alberto D'Angelo
- Department of Biology and Biochemistry, University of Bath, Bath, BA2 7AY, UK
| | | | - Franco Roviello
- Department of Medical, Surgical and Neuro Sciences, Section of Surgery, Azienda Ospedaliera Universitaria Senese, University of Siena, Siena, Italy
| | - Karol Polom
- Department of Medical, Surgical and Neuro Sciences, Section of Surgery, Azienda Ospedaliera Universitaria Senese, University of Siena, Siena, Italy.,Department of Surgical Oncology, Gdansk Medical University, Gdansk, Poland
| | - Enrico Mini
- Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, Viale Pieraccini, 6, 50139, Florence, Italy
| | - Martina Catalano
- School of Human Health Sciences, University of Florence, Largo Brambilla 3, 50134, Florence, Italy
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12
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Łukasik P, Załuski M, Gutowska I. Cyclin-Dependent Kinases (CDK) and Their Role in Diseases Development-Review. Int J Mol Sci 2021; 22:ijms22062935. [PMID: 33805800 PMCID: PMC7998717 DOI: 10.3390/ijms22062935] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/07/2021] [Accepted: 03/09/2021] [Indexed: 12/13/2022] Open
Abstract
Cyclin-dependent kinases (CDKs) are involved in many crucial processes, such as cell cycle and transcription, as well as communication, metabolism, and apoptosis. The kinases are organized in a pathway to ensure that, during cell division, each cell accurately replicates its DNA, and ensure its segregation equally between the two daughter cells. Deregulation of any of the stages of the cell cycle or transcription leads to apoptosis but, if uncorrected, can result in a series of diseases, such as cancer, neurodegenerative diseases (Alzheimer’s or Parkinson’s disease), and stroke. This review presents the current state of knowledge about the characteristics of cyclin-dependent kinases as potential pharmacological targets.
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Affiliation(s)
- Paweł Łukasik
- Department of Medical Chemistry, Pomeranian Medical University in Szczecin, Powstancow Wlkp. 72 Av., 70-111 Szczecin, Poland;
| | - Michał Załuski
- Department of Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, Powstancow Wlkp. 72 Av., 70-111 Szczecin, Poland;
| | - Izabela Gutowska
- Department of Medical Chemistry, Pomeranian Medical University in Szczecin, Powstancow Wlkp. 72 Av., 70-111 Szczecin, Poland;
- Correspondence:
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13
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Maron SB, Xu J, Janjigian YY. Targeting EGFR in Esophagogastric Cancer. Front Oncol 2020; 10:553876. [PMID: 33364187 PMCID: PMC7753114 DOI: 10.3389/fonc.2020.553876] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/05/2020] [Indexed: 12/24/2022] Open
Abstract
Esophagogastric cancer (EGC) remains a major cause of cancer-related mortality. Overall survival in the metastatic setting remains poor, with few molecular targeted approaches having been successfully incorporated into routine care to-date: only first line anti-HER2 therapy in ERBB2-expressing tumors, second line anti-VEGFR2 therapy with ramucirumab in unselected patients, and pembrolizumab in PD-L1 expressing or MSI-H patients. EGFR inhibitors were extensively studied in EGC, including phase III trials with cetuximab (EXPAND), panitumumab (REAL3), and gefitinib (COG). All three trials were conducted in unselected populations, and therefore, failed to demonstrate clinical benefit. Here, we review previous attempts at targeting EGFR in EGC and potential future biomarkers for targeting this pathway in patients with EGFR-amplified tumors.
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Affiliation(s)
- Steven B Maron
- Gastrointestinal Oncology Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - James Xu
- Computer Engineering Program, Columbia University, New York, NY, United States
| | - Yelena Y Janjigian
- Gastrointestinal Oncology Service, Division of Solid Tumor Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
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14
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Pandian J, Panneerpandian P, Devanandan HJ, Sekar BT, Balakrishnan K, Selvarasu K, Muthupandi K, Ganesan K. Identification of the targeted therapeutic potential of doxycycline for a subset of gastric cancer patients. Ann N Y Acad Sci 2020; 1467:94-111. [PMID: 31944316 DOI: 10.1111/nyas.14288] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 11/11/2019] [Accepted: 11/20/2019] [Indexed: 12/26/2022]
Abstract
The identification of new drugs for the targeted therapy of gastric cancer remains an important need. The RAS/RAF/MEK/ERK/ELK1 signaling cascade is activated in many cancers, including gastric cancer. To identify the targetable inhibitors of the ERK/MAPK pathway, we performed a repurposing screening of a panel of antimicrobial agents in gastric cancer cells using an ERK/MAPK-driven firefly luciferase reporter assay. Multiple antibiotics were identified to inhibit ERK-mediated transcriptional activity. Among them, doxycycline showed high inhibition of ERK/MAPK-regulated transcriptional activity and the levels of ERK proteins. Doxycycline was further identified to inhibit the proliferation and the colony- and spheroid-forming potential of gastric cancer cells. By in vitro signaling pathway and genome-wide expression profiling analyses, doxycycline was identified to inhibit signaling pathways and transcriptional activities regulated by ER, Myc, E2F1, Wnt, SMAD2/3/4, Notch, and OCT4. Doxycycline was also found to activate p53-, ATF6-, NRF1/2-, and MTF1-mediated transcription and inhibit the transcription of histones, proteasomal genes, fibroblast growth factor, and other oncogenic factors. These observations show the multitargeting and targeted therapeutic features of doxycycline for a subset of gastric tumors.
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Affiliation(s)
- Jaishree Pandian
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Ponmathi Panneerpandian
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Helen Jemimah Devanandan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Balaji T Sekar
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Karthik Balakrishnan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Karthikeyan Selvarasu
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Karthikeyan Muthupandi
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Kumaresan Ganesan
- Unit of Excellence in Cancer Genetics, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
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15
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Cai H, Hou X, Ding Y, Fu Z, Wang L, Du Y. Prediction of gastric cancer prognosis in the next-generation sequencing era. TRADITIONAL MEDICINE AND MODERN MEDICINE 2019. [DOI: 10.1142/s2575900019300029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Gastric cancer (GC) is one of the most commonly diagnosed malignancies worldwide, and is caused by complex interactions of multiple risk factors such as environmental (Helicobacter pylori and Epstein–Barr Virus), hereditary (genetic alterations and epigenetic modifications), as well as dietary and lifestyle factors. GC is usually detected at an advanced stage, with a dismal prognosis. Even for patients with similar clinical or pathologic stage receiving similar treatment, the outcomes are still uneven and unpredictable. To better incorporate genetic and epigenetic profiles into GC prognostic predication, gene expression signatures have been developed to predict GC outcomes. More recently, the advancement of high-throughput sequencing technology, also known as next-generation sequencing (NGS) technology, and analysis has provided the basis for accurate molecular classification of GC tumors. Here, we summarized and updated the literature related to NGS studies of GC, including whole-genome sequencing, whole-exome sequencing, RNA sequencing, and targeted sequencing, and discussed current progresses. NGS has facilitated the identification of genetic/epigenetic targets for screening as well as development of targeted agent therapy, thus enabling individualized patient management and treatment.
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Affiliation(s)
- Hui Cai
- Department of General Surgery, Changhai Hospital, Second Military Medical University Shanghai, 200433, P. R. China
| | - Xiaomei Hou
- PLA Marine Corps Hospital, Chaozhou, Guangdong 521000, P. R. China
| | - Yibo Ding
- Department of Epidemiology, Second Military Medical University, Shanghai 200433, P. R. China
| | - Zhongxing Fu
- Ningguo Bio-Leader Biotechnology Co., Ltd., Anhui, Hefei, P. R. China
| | - Ling Wang
- Obstetrics and Gynecology Hospital of Fudan University, 419 Fangxie Road, Shanghai 200090, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
- Shanghai Key Laboratory of Female Reproductive, Endocrine-related Diseases, Shanghai, P. R. China
| | - Yan Du
- Obstetrics and Gynecology Hospital of Fudan University, 419 Fangxie Road, Shanghai 200090, P. R. China
- Institutes of Integrative Medicine, Fudan University, Shanghai, P. R. China
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16
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Maron SB, Chase LM, Lomnicki S, Kochanny S, Moore KL, Joshi SS, Landron S, Johnson J, Kiedrowski LA, Nagy RJ, Lanman RB, Kim ST, Lee J, Catenacci DVT. Circulating Tumor DNA Sequencing Analysis of Gastroesophageal Adenocarcinoma. Clin Cancer Res 2019; 25:7098-7112. [PMID: 31427281 DOI: 10.1158/1078-0432.ccr-19-1704] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 07/01/2019] [Accepted: 08/14/2019] [Indexed: 12/20/2022]
Abstract
PURPOSE Gastroesophageal adenocarcinoma (GEA) has a poor prognosis and few therapeutic options. Utilizing a 73-gene plasma-based next-generation sequencing (NGS) cell-free circulating tumor DNA (ctDNA-NGS) test, we sought to evaluate the role of ctDNA-NGS in guiding clinical decision-making in GEA. EXPERIMENTAL DESIGN We evaluated a large cohort (n = 2,140 tests; 1,630 patients) of ctDNA-NGS results (including 369 clinically annotated patients). Patients were assessed for genomic alteration (GA) distribution and correlation with clinicopathologic characteristics and outcomes. RESULTS Treatment history, tumor site, and disease burden dictated tumor-DNA shedding and consequent ctDNA-NGS maximum somatic variant allele frequency. Patients with locally advanced disease having detectable ctDNA postoperatively experienced inferior median disease-free survival (P = 0.03). The genomic landscape was similar but not identical to tissue-NGS, reflecting temporospatial molecular heterogeneity, with some targetable GAs identified at higher frequency via ctDNA-NGS compared with previous primary tumor-NGS cohorts. Patients with known microsatellite instability-high (MSI-High) tumors were robustly detected with ctDNA-NGS. Predictive biomarker assessment was optimized by incorporating tissue-NGS and ctDNA-NGS assessment in a complementary manner. HER2 inhibition demonstrated a profound survival benefit in HER2-amplified patients by ctDNA-NGS and/or tissue-NGS (median overall survival, 26.3 vs. 7.4 months; P = 0.002), as did EGFR inhibition in EGFR-amplified patients (median overall survival, 21.1 vs. 14.4 months; P = 0.01). CONCLUSIONS ctDNA-NGS characterized GEA molecular heterogeneity and rendered important prognostic and predictive information, complementary to tissue-NGS.See related commentary by Frankell and Smyth, p. 6893.
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Affiliation(s)
- Steven B Maron
- Memorial Sloan Kettering Cancer Center, New York, New York
| | - Leah M Chase
- The University of Chicago Medical Center, Chicago, Illinois
| | | | - Sara Kochanny
- The University of Chicago Medical Center, Chicago, Illinois
| | - Kelly L Moore
- The University of Chicago Medical Center, Chicago, Illinois
| | - Smita S Joshi
- The University of Chicago Medical Center, Chicago, Illinois
| | - Stacie Landron
- The University of Chicago Medical Center, Chicago, Illinois
| | - Julie Johnson
- The University of Chicago Medical Center, Chicago, Illinois
| | - Lesli A Kiedrowski
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Rebecca J Nagy
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Richard B Lanman
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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17
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Lui GYL, Grandori C, Kemp CJ. CDK12: an emerging therapeutic target for cancer. J Clin Pathol 2018; 71:957-962. [PMID: 30104286 DOI: 10.1136/jclinpath-2018-205356] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 12/20/2022]
Abstract
Cyclin-dependent kinase 12 (CDK12) belongs to the cyclin-dependent kinase (CDK) family of serine/threonine protein kinases that regulate transcriptional and post-transcriptional processes, thereby modulating multiple cellular functions. Early studies characterised CDK12 as a transcriptional CDK that complexes with cyclin K to mediate gene transcription by phosphorylating RNA polymerase II. CDK12 has been demonstrated to specifically upregulate the expression of genes involved in response to DNA damage, stress and heat shock. More recent studies have implicated CDK12 in regulating mRNA splicing, 3' end processing, pre-replication complex assembly and genomic stability during embryonic development. Genomic alterations in CDK12 have been detected in oesophageal, stomach, breast, endometrial, uterine, ovarian, bladder, colorectal and pancreatic cancers, ranging from 5% to 15% of sequenced cases. An increasing number of studies point to CDK12 inhibition as an effective strategy to inhibit tumour growth, and synthetic lethal interactions have been described with MYC, EWS/FLI and PARP/CHK1 inhibition. Herein, we discuss the present literature on CDK12 in cell function and human cancer, highlighting important roles for CDK12 as a clinical biomarker for treatment response and potential as an effective therapeutic target.
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Affiliation(s)
- Goldie Y L Lui
- Fred Hutchinson Cancer Research Center, Human Biology Division, Seattle, Washington, USA
| | | | - Christopher J Kemp
- Fred Hutchinson Cancer Research Center, Human Biology Division, Seattle, Washington, USA
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18
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Abstract
Gastroesophageal cancer (GEC) remains a major cause of cancer-related mortality worldwide. Although the incidence of distal gastric adenocarcinoma (GC) is declining in the United States, proximal esophagogastric junction adenocarcinoma (EGJ) is increasing in incidence. GEC, including GC and EGJ, is treated uniformly in the metastatic setting. Overall survival in the metastatic setting remains poor. Molecular characterization of GEC has identified mutations and copy number variations, along with other oncogenes, biomarkers, and immuno-oncologic checkpoints that may serve as actionable therapeutic targets. This article reviews these key aberrations, their impact on protein expression, therapeutic implications, and clinical directions within each pathway.
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Affiliation(s)
- Steven B Maron
- Section of Hematology/Oncology, University of Chicago Comprehensive Cancer Center, 900 E 57th St, Suite 7128, Chicago, IL 60637, USA
| | - Daniel V T Catenacci
- Section of Hematology/Oncology, University of Chicago Comprehensive Cancer Center, 900 E 57th St, Suite 7128, Chicago, IL 60637, USA.
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Cesna V, Sukovas A, Jasukaitiene A, Naginiene R, Barauskas G, Dambrauskas Z, Paskauskas S, Gulbinas A. Narrow line between benefit and harm: Additivity of hyperthermia to cisplatin cytotoxicity in different gastrointestinal cancer cells. World J Gastroenterol 2018; 24:1072-1083. [PMID: 29563752 PMCID: PMC5850127 DOI: 10.3748/wjg.v24.i10.1072] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 01/02/2018] [Accepted: 01/15/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the response to hyperthermia and chemotherapy, analyzing apoptosis, cytotoxicity, and cisplatin concentration in different digestive system cancer cells.
METHODS AGS (gastric cancer cell line), Caco-2 (colon cancer cell line) and T3M4 (pancreatic cancer cell line) were treated by cisplatin and different temperature setting (37 °C to 45 °C) either in isolation, or in combination. Treatment lasted for one hour. 48 h after the treatment viability was evaluated by MTT, cell apoptosis by Annexin V-PE and 7ADD flow cytometry. Intracellular cisplatin concentration was measured immediately after the treatment, using mass spectrometry. Isobologram analysis was performed to evaluate the mathematical combined effect of temperature and cisplatin.
RESULTS AGS cells were the most sensitive to isolated application of hyperthermia. Hyperthermia, in addition to cisplatin treatment, did not provoke a synergistic effect at intervals from 37 °C to 41 °C in neither cancer cell line. However, a temperature of 43 °C enhanced cisplatin cytotoxicity for Caco-2 cells. Moreover, isobologram analysis revealed mathematical antagonistic effects of cisplatin and temperature combined treatment in AGS cells; variations between synergistic, additive, and antagonistic effects in Caco-2 cells; and additive and antagonistic effects in T3M4 cells. Combined treatment enhanced initiation of cell apoptosis in AGS, Caco-2, and T3M4 cells by 61%, 20%, and 19% respectively. The increase of intracellular cisplatin concentration was observed at 43 °C by 30%, 20%, and 18% in AGS, Caco-2, and T3M4 cells, respectively.
CONCLUSION In addition to cisplatin, hyperthermia up to 43 °C does not affect the viability of cancer cells in a synergistic manner.
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Affiliation(s)
- Vaidotas Cesna
- Department of Surgery, Lithuanian University of Health Sciences, Kaunas LT-50161, Lithuania
| | - Arturas Sukovas
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas LT-50161, Lithuania
| | - Aldona Jasukaitiene
- Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas LT-50161, Lithuania
| | - Rima Naginiene
- Neuroscience Institute, Lithuanian University of Health Sciences, Kaunas LT-50161, Lithuania
| | - Giedrius Barauskas
- Department of Surgery, Lithuanian University of Health Sciences, Kaunas LT-50161, Lithuania
| | - Zilvinas Dambrauskas
- Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas LT-50161, Lithuania
| | - Saulius Paskauskas
- Department of Obstetrics and Gynecology, Lithuanian University of Health Sciences, Kaunas LT-50161, Lithuania
| | - Antanas Gulbinas
- Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas LT-50161, Lithuania
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20
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Keller S, Zwingenberger G, Ebert K, Hasenauer J, Wasmuth J, Maier D, Haffner I, Schierle K, Weirich G, Luber B. Effects of trastuzumab and afatinib on kinase activity in gastric cancer cell lines. Mol Oncol 2018; 12:441-462. [PMID: 29325228 PMCID: PMC5891041 DOI: 10.1002/1878-0261.12170] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 12/21/2017] [Accepted: 01/02/2018] [Indexed: 12/19/2022] Open
Abstract
The molecular mechanism of action of the HER2‐targeted antibody trastuzumab is only partially understood, and the direct effects of trastuzumab on the gastric cancer signaling network are unknown. In this study, we compared the molecular effect of trastuzumab and the HER kinase inhibitor afatinib on the receptor tyrosine kinase (RTK) network and the downstream‐acting intracellular kinases in gastric cancer cell lines. The molecular effects of trastuzumab and afatinib on the phosphorylation of 49 RTKs and 43 intracellular kinase phosphorylation sites were investigated in three gastric cancer cell lines (NCI‐N87, MKN1, and MKN7) using proteome profiling. To evaluate these effects, data were analyzed using mixed models and clustering. Moreover, proliferation assays were performed. Our comprehensive quantitative analysis of kinase activity in gastric cancer cell lines indicates that trastuzumab and afatinib selectively influenced the HER family RTKs. The effects of trastuzumab differed between cell lines, depending on the presence of activated HER2. The effects of trastuzumab monotherapy were not transduced to the intracellular kinase network. Afatinib alone or in combination with trastuzumab influenced HER kinases in all cell lines; that is, the effects of monotherapy and combination therapy were transduced to the intracellular kinase network. These results were confirmed by proliferation analysis. Additionally, the MET‐amplified cell line Hs746T was identified as afatinib nonresponder. The dependence of the effect of trastuzumab on the presence of activated HER2 might explain the clinical nonresponse of some patients who are routinely tested for HER2 expression and gene amplification in the clinic but not for HER2 activation. The consistent effects of afatinib on HER RTKs and downstream kinase activation suggest that afatinib might be an effective candidate in the future treatment of patients with gastric cancer irrespective of the presence of activated HER2. However, MET amplification should be taken into account as potential resistance factor.
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Affiliation(s)
- Simone Keller
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Germany
| | - Gwen Zwingenberger
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Germany
| | - Karolin Ebert
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Germany
| | - Jan Hasenauer
- Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Institute of Computational Biology, Neuherberg, Germany.,Department of Mathematical Modeling of Biological Systems, Center for Mathematics, Technische Universität München, Garching, Germany
| | - Jacqueline Wasmuth
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Germany
| | | | | | - Katrin Schierle
- Institute of Pathology, Universitätsklinikum Leipzig, Germany
| | - Gregor Weirich
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Germany
| | - Birgit Luber
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Germany
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21
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Verma R, Sharma PC. Next generation sequencing-based emerging trends in molecular biology of gastric cancer. Am J Cancer Res 2018; 8:207-225. [PMID: 29511593 PMCID: PMC5835690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 11/29/2017] [Indexed: 06/08/2023] Open
Abstract
Gastric cancer (GC) is one of the leading causes of cancer related mortality in the world. Being asymptomatic in nature till advanced stage, diagnosis of gastric cancer becomes difficult in early stages of the disease. The onset and progression of gastric cancer has been attributed to multiple factors including genetic alterations, epigenetic modifications, Helicobacter pylori and Epstein-Barr Virus (EBV) infection, and dietary habits. Next Generation Sequencing (NGS) based approaches viz. Whole Genome Sequencing (WGS), Whole Exome Sequencing (WES), RNA-Seq, and targeted sequencing have expanded the knowledge base of molecular pathogenesis of gastric cancer. In this review, we highlight recent NGS-based advances covering various genetic alterations (Microsatellite Instability, Single Nucleotide Variations, and Copy Number Variations), epigenetic changes (DNA methylation, histone modification, microRNAs) and differential gene expression during gastric tumorigenesis. We also briefly discuss the current and future potential biomarkers, drugs and therapeutic approaches available for the management of gastric cancer.
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Affiliation(s)
- Renu Verma
- University School of Biotechnology, Guru Gobind Singh Indraprastha UniversityNew Delhi 110078, India
| | - Prakash C Sharma
- University School of Biotechnology, Guru Gobind Singh Indraprastha UniversityNew Delhi 110078, India
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22
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Keller S, Kneissl J, Grabher-Meier V, Heindl S, Hasenauer J, Maier D, Mattes J, Winter P, Luber B. Evaluation of epidermal growth factor receptor signaling effects in gastric cancer cell lines by detailed motility-focused phenotypic characterization linked with molecular analysis. BMC Cancer 2017; 17:845. [PMID: 29237412 PMCID: PMC5729506 DOI: 10.1186/s12885-017-3822-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 11/22/2017] [Indexed: 12/21/2022] Open
Abstract
Background Gastric cancers frequently overexpress the epidermal growth factor receptor (EGFR), which has been implicated in pathological processes including tumor cell motility, invasion and metastasis. Targeting EGFR with the inhibitory antibody cetuximab may affect the motile and invasive behavior of tumor cells. Here, we evaluated the effects of EGFR signaling in gastric cancer cell lines to link the phenotypic behavior of the cells with their molecular characteristics. Methods Phenotypic effects were analyzed in four gastric cancer cell lines (AGS, Hs746T, LMSU and MKN1) by time-lapse microscopy and transwell invasion assay. Effects on EGFR signaling were detected using Western blot and proteome profiler analyses. A network was constructed linking EGFR signaling to the regulation of cellular motility. Results The analysis of the effects of treatment with epidermal growth factor (EGF) and cetuximab revealed that only one cell line (MKN1) was sensitive to cetuximab treatment in all phenotypic assays, whereas the other cell lines were either not responsive (Hs746T, LMSU) or sensitive only in certain tests (AGS). Cetuximab inhibited EGFR, MAPK and AKT activity and associated components of the EGFR signaling pathway to different degrees in cetuximab-sensitive MKN1 cells. In contrast, no such changes were observed in Hs746T cells. Thus, the different phenotypic behaviors of the cells were linked to their molecular response to treatment. Genetic alterations had different associations with response to treatment: while PIK3CA mutations and KRAS mutation or amplification were not obstructive, the MET mutation was associated with non-response. Conclusion These results identify components of the EGFR signaling network as important regulators of the phenotypic and molecular response to cetuximab treatment. Electronic supplementary material The online version of this article (10.1186/s12885-017-3822-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Simone Keller
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, München, Germany
| | - Julia Kneissl
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, München, Germany
| | - Verena Grabher-Meier
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, München, Germany
| | - Stefan Heindl
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, München, Germany
| | - Jan Hasenauer
- Institute of Computational Biology, Helmholtz Zentrum München-German Research Center for Environmental Health, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany.,Technische Universität München, Center for Mathematics, Chair of Mathematical Modelling of Biological Systems, Boltzmannstraße 3, 85748, Garching, Germany
| | - Dieter Maier
- Biomax Informatics AG, Robert-Koch-Str. 2, 82152, Planegg, Germany
| | - Julian Mattes
- Knowledge-Based Vision Systems, Software Competence Center Hagenberg GmbH, Softwarepark 21, 4232, Hagenberg, Austria.,Present Address: MATTES Medical Imaging GmbH, Softwarepark 21, 4232, Hagenberg, Austria
| | - Peter Winter
- GenXPro GmbH, Altenhöferallee 3, 60438, Frankfurt am Main, Germany
| | - Birgit Luber
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, München, Germany.
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23
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Ryuno H, Naguro I, Kamiyama M. ASK family and cancer. Adv Biol Regul 2017; 66:72-84. [PMID: 28552579 DOI: 10.1016/j.jbior.2017.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 05/17/2017] [Accepted: 05/17/2017] [Indexed: 06/07/2023]
Abstract
Cancer is a major problem in public health and is one of the leading causes of mortality worldwide. Many types of cancer cells exhibit aberrant cellular signal transduction in response to stress, which often leads to oncogenesis. Mitogen-activated protein kinase (MAPK) signal cascades are one of the important intracellular stress signaling pathways closely related to cancer. The key molecules in MAPK signal cascades that respond to various types of stressors are apoptosis signal-regulating kinase (ASK) family members; ASK1, ASK2 and ASK3. ASK family members are activated by a wide variety of stressors, and they regulate various cellular responses, such as cell proliferation, inflammation and apoptosis. In this review, we will discuss both the oncogenic and anti-oncogenic roles of the ASK family members in various contexts of cancer development with deeper insights into the involvement of ASK family members in cancer pathology.
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Affiliation(s)
- Hiroki Ryuno
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Isao Naguro
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Miki Kamiyama
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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24
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Rajendran BK, Deng CX. A comprehensive genomic meta-analysis identifies confirmatory role of OBSCN gene in breast tumorigenesis. Oncotarget 2017; 8:102263-102276. [PMID: 29254242 PMCID: PMC5731952 DOI: 10.18632/oncotarget.20404] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 07/26/2017] [Indexed: 12/15/2022] Open
Abstract
The giant multifunctional protein "OBSCURIN" is encoded by OBSCN gene and is mostly expressed in cardiac and other skeletal muscles responsible for myofibrils organization. Loss of OBSCURIN affects the entire downstream pathway proteins vital for various cellular functions including cell integration and cell adhesion. The OBSCN gene mutations are more frequently observed in various muscular diseases, and cancers. Nevertheless, the direct role of OBSCN in tumorigenesis remains elusive. Interestingly, in clinical breast cancer samples a significant number of function changing mutations have been identified in OBSCN gene. In this study, we identified a significant role of OBSCN by conducting an integrative analysis of copy number alterations, functional mutations, gene methylation and expression data from various BRCA cancer projects data available on cBioPortal and TCGA firebrowse portal. Finally, we carried out genetic network analysis, which revealed that OBSCN gene plays a significant role in GPCR, RAS, p75 or Wnt signaling pathways. Similarly, OBSCN gene interacts with many cancer-associated genes involved in breast tumorigenesis. The OBSCN gene probably regulates breast cancer progression and metastasis and the prognostic molecular signatures such as copy number alterations and gene expression of OBSCN may serve as a tool to identify breast tumorigenesis and metastasis.
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Affiliation(s)
- Barani Kumar Rajendran
- Cancer Research Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Chu-Xia Deng
- Cancer Research Centre, Faculty of Health Sciences, University of Macau, Macau SAR, China
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25
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Tien JF, Mazloomian A, Cheng SWG, Hughes CS, Chow CCT, Canapi LT, Oloumi A, Trigo-Gonzalez G, Bashashati A, Xu J, Chang VCD, Shah SP, Aparicio S, Morin GB. CDK12 regulates alternative last exon mRNA splicing and promotes breast cancer cell invasion. Nucleic Acids Res 2017; 45:6698-6716. [PMID: 28334900 PMCID: PMC5499812 DOI: 10.1093/nar/gkx187] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 03/09/2017] [Indexed: 12/31/2022] Open
Abstract
CDK12 (cyclin-dependent kinase 12) is a regulatory kinase with evolutionarily conserved roles in modulating transcription elongation. Recent tumor genome studies of breast and ovarian cancers highlighted recurrent CDK12 mutations, which have been shown to disrupt DNA repair in cell-based assays. In breast cancers, CDK12 is also frequently co-amplified with the HER2 (ERBB2) oncogene. The mechanisms underlying functions of CDK12 in general and in cancer remain poorly defined. Based on global analysis of mRNA transcripts in normal and breast cancer cell lines with and without CDK12 amplification, we demonstrate that CDK12 primarily regulates alternative last exon (ALE) splicing, a specialized subtype of alternative mRNA splicing, that is both gene- and cell type-specific. These are unusual properties for spliceosome regulatory factors, which typically regulate multiple forms of alternative splicing in a global manner. In breast cancer cells, regulation by CDK12 modulates ALE splicing of the DNA damage response activator ATM and a DNAJB6 isoform that influences cell invasion and tumorigenesis in xenografts. We found that there is a direct correlation between CDK12 levels, DNAJB6 isoform levels and the migration capacity and invasiveness of breast tumor cells. This suggests that CDK12 gene amplification can contribute to the pathogenesis of the cancer.
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Affiliation(s)
- Jerry F Tien
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - Alborz Mazloomian
- Graduate Bioinformatics Training Program, University of British Columbia, Vancouver V5Z 4S6, Canada.,Department of Molecular Oncology, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - S-W Grace Cheng
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - Christopher S Hughes
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - Christalle C T Chow
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - Leanna T Canapi
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - Arusha Oloumi
- Department of Molecular Oncology, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - Genny Trigo-Gonzalez
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - Ali Bashashati
- Department of Molecular Oncology, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - James Xu
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, Canada
| | - Vicky C-D Chang
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada
| | - Sohrab P Shah
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada.,Department of Molecular Oncology, BC Cancer Agency, Vancouver V5Z 1L3, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, Canada
| | - Samuel Aparicio
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada.,Department of Molecular Oncology, BC Cancer Agency, Vancouver V5Z 1L3, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, Canada
| | - Gregg B Morin
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver V5Z 1L3, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver V6H 3N1, Canada
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26
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Abstract
Gastric cancer is the fifth most incident and the third most common cause of cancer-related death in the world. Infection with Helicobacter pylori is the major risk factor for this disease. Gastric cancer is the final outcome of a cascade of events that takes decades to occur and results from the accumulation of multiple genetic and epigenetic alterations. These changes are crucial for tumor cells to expedite and sustain the array of pathways involved in the cancer development, such as cell cycle, DNA repair, metabolism, cell-to-cell and cell-to-matrix interactions, apoptosis, angiogenesis, and immune surveillance. Comprehensive molecular analyses of gastric cancer have disclosed the complex heterogeneity of this disease. In particular, these analyses have confirmed that Epstein-Barr virus (EBV)-positive gastric cancer is a distinct entity. The identification of gastric cancer subtypes characterized by recognizable molecular profiles may pave the way for a more personalized clinical management and to the identification of novel therapeutic targets and biomarkers for screening, prognosis, prediction of response to treatment, and monitoring of gastric cancer progression.
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27
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Abstract
Gastroesophageal cancer (GEC) remains a major cause of cancer-related mortality worldwide. Although the incidence of distal gastric adenocarcinoma (GC) is declining in the United States, proximal esophagogastric junction adenocarcinoma (EGJ) incidence is rising. GC and EGJ, together, are treated uniformly in the metastatic setting as GEC. Overall survival in the metastatic setting remains poor, with few molecular targeted approaches having been successfully incorporated into routine care to date-only first-line anti-HER2 therapy for ERBB2 amplification and second-line anti-VEGFR2 therapy. This article reviews aberrations in epidermal growth factor receptor, MET, and ERBB2, their therapeutic implications, and future directions in targeting these pathways.
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Affiliation(s)
- Steven B Maron
- Section of Hematology/Oncology, University of Chicago Comprehensive Cancer Center, 5841 South Maryland Avenue, Chicago, IL 60637, USA
| | - Daniel V T Catenacci
- The University of Chicago Medical Center & Biological Sciences, 900 East 57th Street, KCBD Building, Office 7128, Chicago, IL 60637, USA.
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28
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Ye S, Zhao XY, Hu XG, Li T, Xu QR, Yang HM, Huang DS, Yang L. TP53 and RET may serve as biomarkers of prognostic evaluation and targeted therapy in hepatocellular carcinoma. Oncol Rep 2017; 37:2215-2226. [PMID: 28350084 PMCID: PMC5367355 DOI: 10.3892/or.2017.5494] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 02/10/2017] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common malignancy of the liver. Genomic analysis is conducted to identify genetic alterations in driver genes which are all druggable targets for cancer therapy. In the present study, we performed an exome sequencing of 45 driver genes in 100 paired samples from HCC patients including tumors and matched adjacent normal tissues using Illumina HiSeq 2000 platform. Non-synonymous mutations were ascertained using the iPLEX MassARRAY system and Sanger sequencing. Clinicopathological relevance with genetic variations was assessed using SPSS software. The prognostic analyses of patients with gene mutation status were summarized using Kaplan-Meier curves. Sixty-one non-synonymous somatic mutations were identified in 43% of the HCC patients. The most frequent mutations were: TP53 (20%), RET (6%), PLCE1 (5%), PTEN (4%) and VEGFR2 (3%). Patients with mutations in TP53 had a lower overall survival (OS) (P=0.002) than those without mutations. Recurrent mutations in the Ret proto‑oncogene (RET) were associated with poor outcomes for both disease‑free survival (DFS) (P=0.028) and OS (P=0.001) in HCC patients. The mutational status of sorafenib-targeted genes were associated with decreased DFS (P=0.039), and decreased OS (P=0.15) without statistical significance. Mutual exclusion of TP53 and RET mutations were observed in the present study. In conclusion, patients with TP53 mutations, RET mutations and sorafenib-targeted gene mutations were demonstrated to be associated with poor HCC prognosis, which suggests that both TP53 and RET may serve as biomarkers of prognostic evaluation and targeted therapy in HCC.
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Affiliation(s)
- Song Ye
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, P.R. China
| | - Xin-Yi Zhao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Xiao-Ge Hu
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Tang Li
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Qiu-Ran Xu
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Huan-Ming Yang
- Beijing Genomics Institute (BGI)-Shenzhen, Shenzhen, Guangdong 518103, P.R. China
| | - Dong-Sheng Huang
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Liu Yang
- Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Key Laboratory of Gastroenterology of Zhejiang Province, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
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29
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Figueiredo C, Camargo MC, Leite M, Fuentes-Pananá EM, Rabkin CS, Machado JC. Pathogenesis of Gastric Cancer: Genetics and Molecular Classification. Curr Top Microbiol Immunol 2017. [PMID: 28124158 DOI: 10.1007/978-3-319-50520-6_12.erratum.in:currtopmicrobiolimmunol.2017;400:e1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Gastric cancer is the fifth most incident and the third most common cause of cancer-related death in the world. Infection with Helicobacter pylori is the major risk factor for this disease. Gastric cancer is the final outcome of a cascade of events that takes decades to occur and results from the accumulation of multiple genetic and epigenetic alterations. These changes are crucial for tumor cells to expedite and sustain the array of pathways involved in the cancer development, such as cell cycle, DNA repair, metabolism, cell-to-cell and cell-to-matrix interactions, apoptosis, angiogenesis, and immune surveillance. Comprehensive molecular analyses of gastric cancer have disclosed the complex heterogeneity of this disease. In particular, these analyses have confirmed that Epstein-Barr virus (EBV)-positive gastric cancer is a distinct entity. The identification of gastric cancer subtypes characterized by recognizable molecular profiles may pave the way for a more personalized clinical management and to the identification of novel therapeutic targets and biomarkers for screening, prognosis, prediction of response to treatment, and monitoring of gastric cancer progression.
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Affiliation(s)
- Ceu Figueiredo
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal.,Faculty of Medicine of the University of Porto, Porto, Portugal
| | - M C Camargo
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, ML, USA
| | - Marina Leite
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal
| | - Ezequiel M Fuentes-Pananá
- Research Unit of Cancer and Virology, Children's Hospital of Mexico "Federico Gomez", Mexico City, Mexico
| | - Charles S Rabkin
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, ML, USA
| | - José C Machado
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal. .,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal. .,Faculty of Medicine of the University of Porto, Porto, Portugal.
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30
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Pilotto S, Gkountakos A, Carbognin L, Scarpa A, Tortora G, Bria E. MET exon 14 juxtamembrane splicing mutations: clinical and therapeutical perspectives for cancer therapy. ANNALS OF TRANSLATIONAL MEDICINE 2017; 5:2. [PMID: 28164087 PMCID: PMC5253296 DOI: 10.21037/atm.2016.12.33] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 10/11/2016] [Indexed: 01/20/2023]
Abstract
The MET proto-oncogene plays crucial roles in cell growth and proliferation, survival and apoptosis, epithelial-mesenchymal transition (EMT) and invasion, potentially conditioning the development and progression of the carcinogenesis process. The MET-associated aberrant signaling could be triggered by a variety of mechanisms, such as mutations, gene amplification, increased gene copy number and Met/HGF protein expression. Among the various MET alterations, MET exon 14 splicing abnormalities, causing the loss of the Met juxtamembrane (JM) domain, recently emerged as a new potential oncogenic driver and have been identified and validated across different cancer and histology subtypes. Moreover, this aberration was found to be mutually exclusive with other recognized drivers, thus strongly nominating its potential oncogenic role. Recently, the clinical activity of anti-Met-targeted therapy was demonstrated particularly in patients harboring MET exon 14 skipping lung cancer, resulting in a renewed enthusiasm to further test MET precision therapy in prospective trials. In this review, the key preclinical and clinical data regarding MET exon 14 skipping splicing variants as an actionable genomic aberration in cancer are described, and the perspectives deriving from the validation of such alteration as a potential target, which may further allow driving the therapeutic approach in this molecularly selected patients' subgroup, are explored.
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Affiliation(s)
- Sara Pilotto
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | | | - Luisa Carbognin
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Aldo Scarpa
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
- ARC-NET Applied Research on Cancer Center, University of Verona, Verona, Italy
| | - Giampaolo Tortora
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Emilio Bria
- Medical Oncology, University of Verona, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
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31
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Kneissl J, Hartmann A, Pfarr N, Erlmeier F, Lorber T, Keller S, Zwingenberger G, Weichert W, Luber B. Influence of the HER receptor ligand system on sensitivity to cetuximab and trastuzumab in gastric cancer cell lines. J Cancer Res Clin Oncol 2016; 143:573-600. [PMID: 27933395 PMCID: PMC5352771 DOI: 10.1007/s00432-016-2308-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 11/17/2016] [Indexed: 12/18/2022]
Abstract
Purpose Gastric cancer remains a major health concern, and improvement of the therapeutic options is crucial. Treatment with targeted therapeutics such as the EGFR-targeting antibody cetuximab or the HER2-targeting antibody trastuzumab is either ineffective or moderately effective in this disease, respectively. In this study, we analysed the involvement of the HER receptor ligands amphiregulin (AREG), epidermal growth factor (EGF), heparin-binding epidermal growth factor (HB-EGF) and transforming growth factor alpha (TGFα) in the responsiveness of gastric cancer cell lines to cetuximab and trastuzumab. Methods A panel of 11 gastric cancer cell lines was characterized for cetuximab and trastuzumab sensitivity, ligand secretion and expression and activation of the HER receptors using WST-1 cell proliferation assays, ELISAs and Western blot analyses. We further investigated the effects of an exogenous ligand application on the cetuximab and trastuzumab sensitivity. Results We found no correlation between TGFα secretion and the sensitivity to cetuximab or trastuzumab. For AREG, we confirmed previous results indicating that this ligand is a positive predictor of cetuximab sensitivity. Exogenous HB-EGF was effective in rescuing sensitive cell lines from inhibition of cell proliferation by both, cetuximab and trastuzumab. Conclusions Our data indicate that HB-EGF may be a useful marker for the prediction of trastuzumab sensitivity in gastric cancer. Electronic supplementary material The online version of this article (doi:10.1007/s00432-016-2308-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Julia Kneissl
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, Munich, Germany
| | - Anja Hartmann
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, Munich, Germany
| | - Nicole Pfarr
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, Munich, Germany
| | - Franziska Erlmeier
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, Munich, Germany
| | - Thomas Lorber
- Institute for Pathology, University Hospital Basel, Schönbeinstrasse 40, 4031, Basel, Switzerland
| | - Simone Keller
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, Munich, Germany
| | - Gwen Zwingenberger
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, Munich, Germany
| | - Wilko Weichert
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, Munich, Germany
| | - Birgit Luber
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Klinikum rechts der Isar, Trogerstr. 18, 81675, Munich, Germany.
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32
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Chilà R, Guffanti F, Damia G. Role and therapeutic potential of CDK12 in human cancers. Cancer Treat Rev 2016; 50:83-88. [PMID: 27662623 DOI: 10.1016/j.ctrv.2016.09.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 08/30/2016] [Accepted: 09/01/2016] [Indexed: 12/31/2022]
Abstract
Phosphorylation of the RNA polymerase II C-terminal domain by cyclin-dependent kinases (CDKs) is important for productive transcription. Deregulated transcription-CDKs have been reported in different human cancers. Until recently CDK9 was the only transcription-CDK with a causative role in cancer, but evidence is cumulating of the importance of CDK12. This review summarizes the role of CDK12 in transcription and RNA processing, in maintaining genomic stability/integrity and in tumorigenesis. CDK12 mutations have been reported in many cancers and have been suggested as a cause of defective DNA repair in ovarian carcinoma. CDK12 may have a role as a new therapeutic target in oncology.
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Affiliation(s)
- Rosaria Chilà
- Laboratory of Molecular Pharmacology, Oncology Department, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Federica Guffanti
- Laboratory of Molecular Pharmacology, Oncology Department, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - Giovanna Damia
- Laboratory of Molecular Pharmacology, Oncology Department, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy.
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33
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Gastrointestinal malignancies harbor actionable MET exon 14 deletions. Oncotarget 2016; 6:28211-22. [PMID: 26375439 PMCID: PMC4695055 DOI: 10.18632/oncotarget.4721] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/31/2015] [Indexed: 11/30/2022] Open
Abstract
Recently, MET exon 14 deletion (METex14del) has been postulated to be one potential mechanism for MET protein overexpression. We screened for the presence of METex14del transcript by multiplexed fusion transcript analysis using nCounter assay followed by confirmation with quantitative reverse transcription PCR with correlation to MET protein expression by immunohistochemistry (IHC) and MET amplification by fluorescence in situ hybridization (FISH). We extracted RNAs from 230 patients enrolled onto the prospective molecular profiling clinical trial (NEXT-1) (NCT02141152) between November 2013 and August 2014. Thirteen METex14del cases were identified including 3 gastric cancer, 4 colon cancer, 5 non-small cell lung cancer, and one adenocarcinoma of unknown primary. Of these 13 METex14del cases, 11 were MET IHC 3+ and 2 were 2+. Only one out of the 13 METex14del cases was MET amplified (MET/CEP ratio > 2.0). Growths of two (gastric, colon) METex14del+ patient tumor derived cell lines were profoundly inhibited by both MET tyrosine kinase inhibitors and a monoclonal antibody targeting MET. In conclusion, METex14del is a unique molecular aberration present in gastrointestinal (GI) malignancies corresponding with overexpression of MET protein but rarely with MET amplification. Substantial growth inhibition of METex14del+ patient tumor derived cell lines by several MET targeting drugs strongly suggests METex14del is a potential actionable driver mutation in GI malignancies.
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34
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Cdk12 is essential for embryonic development and the maintenance of genomic stability. Cell Death Differ 2015; 23:1038-48. [PMID: 26658019 PMCID: PMC4987723 DOI: 10.1038/cdd.2015.157] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 10/28/2015] [Accepted: 10/30/2015] [Indexed: 01/06/2023] Open
Abstract
The maintenance of genomic integrity during early embryonic development is important in order to ensure the proper development of the embryo. Studies from cultured cells have demonstrated that cyclin-dependent kinase 12 (Cdk12) is a multifunctional protein that maintains genomic stability and the pluripotency of embryonic stem cells. Perturbation of its functions is also known to be associated with pathogenesis and drug resistance in human cancers. However, the biological significance of Cdk12 in vivo is unclear. Here we bred mice that are deficient in Cdk12 and demonstrated that Cdk12 depletion leads to embryonic lethality shortly after implantation. We also used an in vitro culture system of blastocysts to examine the molecular mechanisms associated with the embryonic lethality of Cdk12-deficient embryos. Cdk12−/− blastocysts fail to undergo outgrowth of the inner cell mass because of an increase in the apoptosis of these cells. Spontaneous DNA damage was revealed by an increase in 53BP1 foci among cells cultured from Cdk12−/− embryos. Furthermore, the expression levels of various DNA damage response genes, namely Atr, Brca1, Fanci and Fancd2, are reduced in Cdk12−/− embryos. These findings indicate that Cdk12 is important for the correct expression of some DNA damage response genes and indirectly has an influence on the efficiency of DNA repair. Our report also highlights that DNA breaks occurring during DNA replication are frequent in mouse embryonic cells and repair of such damage is critical to the successful development of mouse embryos.
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35
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Pilati C, Zucman-Rossi J. Mutations leading to constitutive active gp130/JAK1/STAT3 pathway. Cytokine Growth Factor Rev 2015; 26:499-506. [DOI: 10.1016/j.cytogfr.2015.07.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 07/01/2015] [Indexed: 12/21/2022]
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Lin Y, Wu Z, Guo W, Li J. Gene mutations in gastric cancer: a review of recent next-generation sequencing studies. Tumour Biol 2015; 36:7385-94. [PMID: 26364057 DOI: 10.1007/s13277-015-4002-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 08/25/2015] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer (GC) is one of the most common malignancies worldwide. Although some driver genes have been identified in GC, the molecular compositions of GC have not been fully understood. The development of next-generation sequencing (NGS) provides a high-throughput and systematic method to identify all genetic alterations in the cancer genome, especially in the field of mutation detection. NGS studies in GC have discovered some novel driver mutations. In this review, we focused on novel gene mutations discovered by NGS studies, along with some well-known driver genes in GC. We organized mutated genes from the perspective of related biological pathways. Mutations in genes relating to genome integrity (TP53, BRCA2), chromatin remodeling (ARID1A), cell adhesion (CDH1, FAT4, CTNNA1), cytoskeleton and cell motility (RHOA), Wnt pathway (CTNNB1, APC, RNF43), and RTK pathway (RTKs, RAS family, MAPK pathway, PIK pathway) are discussed. Efforts to establish a molecular classification based on NGS data which is valuable for future targeted therapy for GC are introduced. Comprehensive dissection of the molecular profile of GC cannot only unveil the molecular basis for GC but also identify genes of clinical utility, especially potential and specific therapeutic targets for GC.
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Affiliation(s)
- Y Lin
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Z Wu
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - W Guo
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, 200032, China
| | - J Li
- Tongji University Tianyou Hospital, Shanghai, 200331, China.
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Gallo LH, Meyer AN, Motamedchaboki K, Nelson KN, Haas M, Donoghue DJ. Novel Lys63-linked ubiquitination of IKKβ induces STAT3 signaling. Cell Cycle 2015; 13:3964-76. [PMID: 25486864 PMCID: PMC4615003 DOI: 10.4161/15384101.2014.988026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
NFκB signaling plays a significant role in human disease, including breast and ovarian carcinoma, insulin resistance, embryonic lethality and liver degeneration, rheumatoid arthritis, aging and Multiple Myeloma (MM). Inhibitor of κB (IκB) kinase β (IKKβ) regulates canonical Nuclear Factor κB (NFκB) signaling in response to inflammation and cellular stresses. NFκB activation requires Lys63-linked (K63-linked) ubiquitination of upstream proteins such as NEMO or TAK1, forming molecular complexes with membrane-bound receptors. We demonstrate that IKKβ itself undergoes K63-linked ubiquitination. Mutations in IKKβ at Lys171, identified in Multiple Myeloma and other cancers, lead to a dramatic increase in kinase activation and K63-linked ubiquitination. These mutations also result in persistent activation of STAT3 signaling. Liquid chromatography (LC)-high mass accuracy tandem mass spectrometry (MS/MS) analysis identified Lys147, Lys418, Lys555 and Lys703 as predominant ubiquitination sites in IKKβ. Specific inhibition of the UBC13-UEV1A complex responsible for K63-linked ubiquitination establishes Lys147 as the predominant site of K63-ubiquitin conjugation and responsible for STAT3 activation. Thus, IKKβ activation leads to ubiquitination within the kinase domain and assemblage of a K63-ubiquitin conjugated signaling platform. These results are discussed with respect to the importance of upregulated NFκB signaling known to occur frequently in MM and other cancers.
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Affiliation(s)
- Leandro H Gallo
- a Department of Chemistry and Biochemistry ; University of California San Diego ; La Jolla , CA USA
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Tsui T, Miller WT. Cancer-Associated Mutations in Breast Tumor Kinase/PTK6 Differentially Affect Enzyme Activity and Substrate Recognition. Biochemistry 2015; 54:3173-82. [PMID: 25940761 DOI: 10.1021/acs.biochem.5b00303] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Brk (breast tumor kinase, also known as PTK6) is a nonreceptor tyrosine kinase that is aberrantly expressed in several cancers and promotes cell proliferation and transformation. Genome sequencing studies have revealed a number of cancer-associated somatic mutations in the Brk gene; however, their effect on Brk activity has not been examined. We analyzed a panel of cancer-associated mutations and determined that several of the mutations activate Brk, while two eliminated enzymatic activity. Three of the mutations (L16F, R131L, and P450L) are located in important regulatory domains of Brk (the SH3, SH2 domains, and C-terminal tail, respectively). Biochemical data suggest that they activate Brk by disrupting intramolecular interactions that normally maintain Brk in an autoinhibited conformation. We also observed differential effects on recognition and phosphorylation of substrates, suggesting that the mutations can influence downstream Brk signaling by multiple mechanisms.
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Affiliation(s)
- Tiffany Tsui
- Department of Physiology and Biophysics, School of Medicine, Stony Brook University, Stony Brook, New York 11794, United States
| | - W Todd Miller
- Department of Physiology and Biophysics, School of Medicine, Stony Brook University, Stony Brook, New York 11794, United States
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Yu DH, Tang L, Dong H, Dong Z, Zhang L, Fu J, Su X, Zhang T, Fu H, Han L, Xie L, Chen H, Qian Z, Zhu G, Wang J, Ye Q, Zhang J, Yin X, Zhang X, Ji J, Ji Q. Oncogenic HER2 fusions in gastric cancer. J Transl Med 2015; 13:116. [PMID: 25889497 PMCID: PMC4396883 DOI: 10.1186/s12967-015-0476-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 03/25/2015] [Indexed: 01/09/2023] Open
Abstract
Background Genetic amplification of HER2 drives tumorigenesis and cancer progression in a subset of patients with gastric cancer (GC), and treatment with trastuzumab, a humanized HER2-neutralizing antibody, improves the overall survival rate of HER2-positive patients. However, a considerable portion of the patients does not respond to trastuzumab and the molecular mechanisms underlying the intrinsic resistance to anti-HER2 therapy in GC is not fully understood. Methods We performed whole-transcriptome sequencing on 21 HER2-positive tumor specimens from Chinese GC patients. Whole genome sequencing was performed on the three samples with HER2 fusion to discover the DNA integration structure. A multicolor FISH assay for HER2 split screening was conducted to confirm HER2 fusion and IHC (HercepTest™) was used to detect the membranous expression of HER2. Fusion cDNA were transfected into NIH/3T3 cells and generate stable cell line by lentivirus. The expression of exogenous HER2 fusion proteins and pHER2 were examined by western blot analysis. In vitro efficacy studies were also conducted by PD assay and softagar assay in cell line expression wild type and fusion HER2. T-DM1 was used to assess its binding to NIH/3T3 cells ectopically expressing wild-type and fusion HER2. Finally, the anti-tumor efficacy of trastuzumab was tested in NIH/3 T3 xenografts expressing the HER2 fusion variants. Results We identified three new HER2 fusions with ZNF207, MDK, or NOS2 in 21 HER2-amplified GC samples (14%; 3/21). Two of the fusions, ZNF207-HER2, and MDK-HER2, which are oncogenic, lead to aberrant activation of HER2 kinase. Treatment with trastuzumab inhibited tumor growth significantly in xenografts expressing MDK-HER2 fusion. In contrast, trastuzumab had no effect on the growth of xenografts expressing ZNF207-HER2 fusion, due to its inability to bind to trastuzumab. Conclusions Our results provide the molecular basis of a novel resistance mechanism to trastuzumab-based anti-HER2 therapy, supporting additional molecule stratification within HER2-positive GC patients for more effective therapy options. Electronic supplementary material The online version of this article (doi:10.1186/s12967-015-0476-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- De-Hua Yu
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Lili Tang
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Hua Dong
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Zhengwei Dong
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Lianhai Zhang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Surgery, Peking University Cancer Hospital and Institute, Beijing, China.
| | - Jiangang Fu
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Xinying Su
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Tianwei Zhang
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Haihua Fu
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Lu Han
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Liang Xie
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Hao Chen
- Department of General Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Ziliang Qian
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Guanshan Zhu
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Jia Wang
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Qingqing Ye
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Jingchuan Zhang
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Xiaolu Yin
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Xiaolin Zhang
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China.
| | - Jiafu Ji
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Surgery, Peking University Cancer Hospital and Institute, Beijing, China.
| | - Qunsheng Ji
- Innovation Center China, Asia & Emerging Market iMed, AstraZeneca Innovation Medicines and Early Development, 199 Liangjing Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, China. .,Current mailing address: WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao, China (Shanghai) Pilot Free Trade Zone, Shanghai, 200131, China.
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Ekumi KM, Paculova H, Lenasi T, Pospichalova V, Bösken CA, Rybarikova J, Bryja V, Geyer M, Blazek D, Barboric M. Ovarian carcinoma CDK12 mutations misregulate expression of DNA repair genes via deficient formation and function of the Cdk12/CycK complex. Nucleic Acids Res 2015; 43:2575-89. [PMID: 25712099 PMCID: PMC4357706 DOI: 10.1093/nar/gkv101] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 01/05/2015] [Accepted: 01/30/2015] [Indexed: 12/11/2022] Open
Abstract
The Cdk12/CycK complex promotes expression of a subset of RNA polymerase II genes, including those of the DNA damage response. CDK12 is among only nine genes with recurrent somatic mutations in high-grade serous ovarian carcinoma. However, the influence of these mutations on the Cdk12/CycK complex and their link to cancerogenesis remain ill-defined. Here, we show that most mutations prevent formation of the Cdk12/CycK complex, rendering the kinase inactive. By examining the mutations within the Cdk12/CycK structure, we find that they likely provoke structural rearrangements detrimental to Cdk12 activation. Our mRNA expression analysis of the patient samples containing the CDK12 mutations reveals coordinated downregulation of genes critical to the homologous recombination DNA repair pathway. Moreover, we establish that the Cdk12/CycK complex occupies these genes and promotes phosphorylation of RNA polymerase II at Ser2. Accordingly, we demonstrate that the mutant Cdk12 proteins fail to stimulate the faithful DNA double strand break repair via homologous recombination. Together, we provide the molecular basis of how mutated CDK12 ceases to function in ovarian carcinoma. We propose that CDK12 is a tumor suppressor of which the loss-of-function mutations may elicit defects in multiple DNA repair pathways, leading to genomic instability underlying the genesis of the cancer.
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Affiliation(s)
- Kingsley M Ekumi
- Institute of Biomedicine, Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland
| | - Hana Paculova
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
| | - Tina Lenasi
- Institute of Biomedicine, Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland
| | - Vendula Pospichalova
- Institute of Experimental Biology, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic
| | - Christian A Bösken
- Center of Advanced European Studies and Research, Group Physical Biochemistry, 53175 Bonn, Germany
| | - Jana Rybarikova
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
| | - Vitezslav Bryja
- Institute of Experimental Biology, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic Institute of Biophysics, Academy of Sciences of the Czech Republic, 61265 Brno, Czech Republic
| | - Matthias Geyer
- Center of Advanced European Studies and Research, Group Physical Biochemistry, 53175 Bonn, Germany
| | - Dalibor Blazek
- Central European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic
| | - Matjaz Barboric
- Institute of Biomedicine, Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland
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Liu GX, Xi HQ, Sun XY, Wei B. Role of periostin and its antagonist PNDA-3 in gastric cancer metastasis. World J Gastroenterol 2015; 21:2605-2613. [PMID: 25759527 PMCID: PMC4351209 DOI: 10.3748/wjg.v21.i9.2605] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Revised: 10/12/2014] [Accepted: 12/16/2014] [Indexed: 02/06/2023] Open
Abstract
The extracellular matrix component periostin is a secreted protein that functions as both a cell attachment protein and an autocrine or paracrine factor that signals through the cell adhesion molecule integrins αvβ3 and αvβ5. Periostin participates in normal physiological activities such as cardiac development, but is also involved in pathophysiological processes in vascular diseases, wound repair, bone formation, and tumor development. It is of increasing interest in tumor biology because it is frequently overexpressed in a variety of epithelial carcinomas and is functionally involved in multiple steps of metastasis progression. These include the maintenance of stemness, niche formation, EMT, the survival of tumor cells, and angiogenesis, all of which are indispensable for gastric cancer metastasis. Periostin has been reported to activate the PI-3K/AKT, Wnt, and FAK-mediated signaling pathways to promote metastasis. Therefore, periostin represents a potentially promising candidate for the inhibition of metastasis. In this review article, we summarize recent advances in knowledge concerning periostin, its antagonist PNDA-3, and their influence on such key processes in cancer metastasis as maintenance of stemness, niche formation, epithelial-to-mesenchymal transition, tumor cell survival, and angiogenesis. In particular, we focus our attention on the role of periostin in gastric cancer metastasis, speculate as to the usefulness of periostin as a therapeutic and diagnostic target for gastric cancer metastasis, and consider potential avenues for future research.
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Abstract
Gastric cancer remains highly prevalent and accounts for a notable proportion of global cancer mortality. This cancer is also associated with poor survival rates. Understanding the genetic basis of gastric cancer will offer insights into its pathogenesis, help identify new biomarkers and novel treatment targets, aid prognostication and could be central to developing individualized treatment strategies in the future. An inherited component contributes to <3% of gastric cancers; the majority of genetic changes associated with gastric cancer are acquired. Over the past few decades, advances in technology and high-throughput analysis have improved understanding of the molecular aspects of the pathogenesis of gastric cancer. These aspects are multifaceted and heterogeneous and represent a wide spectrum of several key genetic influences, such as chromosomal instability, microsatellite instability, changes in microRNA profile, somatic gene mutations or functional single nucleotide polymorphisms. These genetic aspects of the pathogenesis of gastric cancer will be addressed in this Review.
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Affiliation(s)
- Mairi H McLean
- National Cancer Institute, Laboratory of Molecular Immunoregulation, Cancer &Inflammation Program, 1050 Boyles Street, Frederick, MD 21702-1201, USA
| | - Emad M El-Omar
- Division of Applied Medicine, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB51 5ER, UK
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Dang Y, Wang YC, Huang QJ. Microarray and Next-Generation Sequencing to Analyse Gastric Cancer. Asian Pac J Cancer Prev 2014. [DOI: 10.7314/apjcp.2014.15.19.8035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Gaston D, Hansford S, Oliveira C, Nightingale M, Pinheiro H, Macgillivray C, Kaurah P, Rideout AL, Steele P, Soares G, Huang WY, Whitehouse S, Blowers S, LeBlanc MA, Jiang H, Greer W, Samuels ME, Orr A, Fernandez CV, Majewski J, Ludman M, Dyack S, Penney LS, McMaster CR, Huntsman D, Bedard K. Germline mutations in MAP3K6 are associated with familial gastric cancer. PLoS Genet 2014; 10:e1004669. [PMID: 25340522 PMCID: PMC4207611 DOI: 10.1371/journal.pgen.1004669] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 08/14/2014] [Indexed: 12/13/2022] Open
Abstract
Gastric cancer is among the leading causes of cancer-related deaths worldwide. While heritable forms of gastric cancer are relatively rare, identifying the genes responsible for such cases can inform diagnosis and treatment for both hereditary and sporadic cases of gastric cancer. Mutations in the E-cadherin gene, CDH1, account for 40% of the most common form of familial gastric cancer (FGC), hereditary diffuse gastric cancer (HDGC). The genes responsible for the remaining forms of FGC are currently unknown. Here we examined a large family from Maritime Canada with FGC without CDH1 mutations, and identified a germline coding variant (p.P946L) in mitogen-activated protein kinase kinase kinase 6 (MAP3K6). Based on conservation, predicted pathogenicity and a known role of the gene in cancer predisposition, MAP3K6 was considered a strong candidate and was investigated further. Screening of an additional 115 unrelated individuals with non-CDH1 FGC identified the p.P946L MAP3K6 variant, as well as four additional coding variants in MAP3K6 (p.F849Sfs*142, p.P958T, p.D200Y and p.V207G). A somatic second-hit variant (p.H506Y) was present in DNA obtained from one of the tumor specimens, and evidence of DNA hypermethylation within the MAP3K6 gene was observed in DNA from the tumor of another affected individual. These findings, together with previous evidence from mouse models that MAP3K6 acts as a tumor suppressor, and studies showing the presence of somatic mutations in MAP3K6 in non-hereditary gastric cancers and gastric cancer cell lines, point towards MAP3K6 variants as a predisposing factor for FGC. The underlying genetic mutations involved in 60% of inherited gastric cancer cases remain unknown. Here we present a large, extended pedigree with familial gastric cancer and an association in part of the family with a mutation in MAP3K6. The conservation, predicted pathogenicity of the variant, tissue distribution, and known function of MAP3K6 made this a strong candidate that warranted further investigation. Examination of an additional 115 unrelated probands identified additional mutations in MAP3K6, including a truncating mutation.
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Affiliation(s)
- Daniel Gaston
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Samantha Hansford
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Carla Oliveira
- Expression Regulation in Cancer Group, IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto & Medical Faculty of the University of Porto, Porto, Portugal
| | - Mathew Nightingale
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Hugo Pinheiro
- Expression Regulation in Cancer Group, IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto & Medical Faculty of the University of Porto, Porto, Portugal
| | - Christine Macgillivray
- Department of Ophthalmology and Visual Sciences, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Pardeep Kaurah
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Patricia Steele
- Medical Genetics, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Gabriela Soares
- Center of Medical Genetics Jacinto de Magalhães, Porto Hospital Center, Porto, Portugal
| | - Weei-Yuarn Huang
- Division of Anatomical Pathology, Department of Pathology, Queen Elizabeth II Health Science Center and Dalhousie University, Halifax, Nova Scotia, Canada
| | - Scott Whitehouse
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Sarah Blowers
- Queen's Family Health Team, Kingston, Ontario, Canada
| | - Marissa A. LeBlanc
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Haiyan Jiang
- Department of Biostatistics, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Wenda Greer
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Mark E. Samuels
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
- Centre de Recherche du CHU Ste-Justine and Department of Medicine, University of Montreal, Montreal, Quebec, Canada
| | - Andrew Orr
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
- Department of Ophthalmology and Visual Sciences, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Conrad V. Fernandez
- Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jacek Majewski
- Department of Human Genetics, McGill University, Montreal, Québec, Canada
| | - Mark Ludman
- Medical Genetics, IWK Health Centre, Halifax, Nova Scotia, Canada
- Oncogenetics Service, Institute of Medical Genetics, Meir Medical Center, Kfar Saba, Israel
| | - Sarah Dyack
- Medical Genetics, IWK Health Centre, Halifax, Nova Scotia, Canada
- Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Lynette S. Penney
- Medical Genetics, IWK Health Centre, Halifax, Nova Scotia, Canada
- Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - David Huntsman
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Karen Bedard
- Department of Pathology, Dalhousie University, Halifax, Nova Scotia, Canada
- * E-mail:
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Kim TM, Jung SH, Kim MS, Baek IP, Park SW, Lee SH, Lee HH, Kim SS, Chung YJ, Lee SH. The mutational burdens and evolutionary ages of early gastric cancers are comparable to those of advanced gastric cancers. J Pathol 2014; 234:365-74. [PMID: 25042771 DOI: 10.1002/path.4401] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 06/22/2014] [Accepted: 06/27/2014] [Indexed: 12/15/2022]
Abstract
Early gastric cancers (EGCs) precede advanced gastric cancers (AGCs), with a favourable prognosis compared to AGC. To understand the progression mechanism of EGC to AGC, it is required to disclose EGC and AGC genomes in mutational and evolutionary perspectives. We performed whole-exome sequencing and copy number profiling of nine microsatellite (MS)-unstable (MSI-H) (five EGCs and four AGCs) and eight MS-stable (MSS) gastric cancers (four EGCs and four AGCs). In the cancers, we observed well-known driver mutations (TP53, APC, PIK3CA, ARID1A, and KRAS) that were enriched in cancer-related pathways, including chromatin remodelling and tyrosine kinase activity. The MSI-H genomes harboured ten times more mutations, but were largely depleted of copy number alterations (CNAs) compared to the MSS cancers. Interestingly, EGC genomes showed a comparable level of mutations to AGC in terms of the number, sequence composition, and functional consequences (potential driver mutations and affected pathways) of mutations. Furthermore, the CNAs between EGC and AGC genomes were not significantly different in either MSI-H and MSS. Evolutionary analyses using somatic mutations and MSI as molecular clocks further identified that EGC genomes were as old as AGC genomes in both MSS and MSI-H cancers. Our results suggest that the genetic makeup for gastric cancer may already be achieved in EGC genomes and that the time required for transition to AGC may be relatively short. Also, the data suggest a possibility that the mutational profiles obtained from early biopsies may be useful in the clinical settings for the molecular diagnosis and therapeutics of gastric cancer patients.
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Affiliation(s)
- Tae-Min Kim
- Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul, 137-701, Republic of Korea
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Enrichment of phosphatidylinositols with specific acyl chains. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:1501-8. [DOI: 10.1016/j.bbamem.2013.10.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Revised: 09/25/2013] [Accepted: 10/03/2013] [Indexed: 12/21/2022]
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Kalamohan K, Periasamy J, Bhaskar Rao D, Barnabas GD, Ponnaiyan S, Ganesan K. Transcriptional coexpression network reveals the involvement of varying stem cell features with different dysregulations in different gastric cancer subtypes. Mol Oncol 2014; 8:1306-25. [PMID: 24917244 DOI: 10.1016/j.molonc.2014.04.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 03/22/2014] [Accepted: 04/14/2014] [Indexed: 01/29/2023] Open
Abstract
Despite the advancements in the cancer therapeutics, gastric cancer ranks as the second most common cancers with high global mortality rate. Integrative functional genomic investigation is a powerful approach to understand the major dysregulations and to identify the potential targets toward the development of targeted therapeutics for various cancers. Intestinal and diffuse type gastric tumors remain the major subtypes and the molecular determinants and drivers of these distinct subtypes remain unidentified. In this investigation, by exploring the network of gene coexpression association in gastric tumors, mRNA expressions of 20,318 genes across 200 gastric tumors were categorized into 21 modules. The genes and the hub genes of the modules show gastric cancer subtype specific expression. The expression patterns of the modules were correlated with intestinal and diffuse subtypes as well as with the differentiation status of gastric tumors. Among these, G1 module has been identified as a major driving force of diffuse type gastric tumors with the features of (i) enriched mesenchymal, mesenchymal stem cell like, and mesenchymal derived multiple lineages, (ii) elevated OCT1 mediated transcription, (iii) involvement of Notch activation, and (iv) reduced polycomb mediated epigenetic repression. G13 module has been identified as key factor in intestinal type gastric tumors and found to have the characteristic features of (i) involvement of embryonic stem cell like properties, (ii) Wnt, MYC and E2F mediated transcription programs, and (iii) involvement of polycomb mediated repression. Thus the differential transcription programs, differential epigenetic regulation and varying stem cell features involved in two major subtypes of gastric cancer were delineated by exploring the gene coexpression network. The identified subtype specific dysregulations could be optimally employed in developing subtype specific therapeutic targeting strategies for gastric cancer.
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Affiliation(s)
- Kalaivani Kalamohan
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, India
| | - Jayaprakash Periasamy
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, India
| | - Divya Bhaskar Rao
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, India
| | - Georgina D Barnabas
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, India
| | - Srigayatri Ponnaiyan
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, India
| | - Kumaresan Ganesan
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, India.
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48
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Integrated exome and transcriptome sequencing reveals ZAK isoform usage in gastric cancer. Nat Commun 2014; 5:3830. [PMID: 24807215 PMCID: PMC4024760 DOI: 10.1038/ncomms4830] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 04/07/2014] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer is the second leading cause of worldwide cancer mortality, yet the underlying genomic alterations remain poorly understood. Here we perform exome and transcriptome sequencing and SNP array assays to characterize 51 primary gastric tumours and 32 cell lines. Meta-analysis of exome data and previously published data sets reveals 24 significantly mutated genes in microsatellite stable (MSS) tumours and 16 in microsatellite instable (MSI) tumours. Over half the patients in our collection could potentially benefit from targeted therapies. We identify 55 splice site mutations accompanied by aberrant splicing products, in addition to mutation-independent differential isoform usage in tumours. ZAK kinase isoform TV1 is preferentially upregulated in gastric tumours and cell lines relative to normal samples. This pattern is also observed in colorectal, bladder and breast cancers. Overexpression of this particular isoform activates multiple cancer-related transcription factor reporters, while depletion of ZAK in gastric cell lines inhibits proliferation. These results reveal the spectrum of genomic and transcriptomic alterations in gastric cancer, and identify isoform-specific oncogenic properties of ZAK. The genetic basis of gastric cancer, the fourth most common cancer worldwide, remains poorly understood. Here, the authors sequence and analyse the exomes and transcriptomes of primary gastric tumours and cell lines, and identify a ZAK kinase isoform that may have an oncogenic role in gastric cancer.
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49
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Periasamy J, Muthuswami M, Rao DB, Tan P, Ganesan K. Stratification and delineation of gastric cancer signaling by in vitro transcription factor activity profiling and integrative genomics. Cell Signal 2014; 26:880-94. [PMID: 24462706 DOI: 10.1016/j.cellsig.2014.01.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 01/10/2014] [Accepted: 01/13/2014] [Indexed: 01/12/2023]
Abstract
Integrative functional genomic approaches are helpful in delineating the complex dysregulations in cancers. In the present study, in vitro activity profiling of 45 signaling pathway driven transcription factors in eight gastric cancer cell lines and direct comparison with genome-wide profiles of gastric tumors were performed and the integration resulted in the identification of three categories of factors/pathways: i) highly activated signaling pathways that stem from mutations are the critical oncogenic drivers, ii) constitutively activated stress responsive pathways which are activated not due to genetic alterations, and iii) consistently down-regulated nuclear receptor responsive factors. This functional profiling helps in discriminating therapeutic targets and signaling interactions.
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Affiliation(s)
- Jayaprakash Periasamy
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Muthulakshmi Muthuswami
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Divya Bhaskar Rao
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Patrick Tan
- Duke-NUS Graduate Medical School Singapore, 8 College Road, Singapore
| | - Kumaresan Ganesan
- Cancer Genetics Laboratory, Department of Genetics, Centre for Excellence in Genomic Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India.
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50
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Natrajan R, Wilkerson PM, Marchiò C, Piscuoglio S, Ng CKY, Wai P, Lambros MB, Samartzis EP, Dedes KJ, Frankum J, Bajrami I, Kopec A, Mackay A, A'hern R, Fenwick K, Kozarewa I, Hakas J, Mitsopoulos C, Hardisson D, Lord CJ, Kumar-Sinha C, Ashworth A, Weigelt B, Sapino A, Chinnaiyan AM, Maher CA, Reis-Filho JS. Characterization of the genomic features and expressed fusion genes in micropapillary carcinomas of the breast. J Pathol 2014; 232:553-65. [PMID: 24395524 PMCID: PMC4013428 DOI: 10.1002/path.4325] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 12/04/2013] [Accepted: 12/29/2013] [Indexed: 12/30/2022]
Abstract
Micropapillary carcinoma (MPC) is a rare histological special type of breast cancer, characterized by an aggressive clinical behaviour and a pattern of copy number aberrations (CNAs) distinct from that of grade- and oestrogen receptor (ER)-matched invasive carcinomas of no special type (IC-NSTs). The aims of this study were to determine whether MPCs are underpinned by a recurrent fusion gene(s) or mutations in 273 genes recurrently mutated in breast cancer. Sixteen MPCs were subjected to microarray-based comparative genomic hybridization (aCGH) analysis and Sequenom OncoCarta mutation analysis. Eight and five MPCs were subjected to targeted capture and RNA sequencing, respectively. aCGH analysis confirmed our previous observations about the repertoire of CNAs of MPCs. Sequencing analysis revealed a spectrum of mutations similar to those of luminal B IC-NSTs, and recurrent mutations affecting mitogen-activated protein kinase family genes and NBPF10. RNA-sequencing analysis identified 17 high-confidence fusion genes, eight of which were validated and two of which were in-frame. No recurrent fusions were identified in an independent series of MPCs and IC-NSTs. Forced expression of in-frame fusion genes (SLC2A1-FAF1 and BCAS4-AURKA) resulted in increased viability of breast cancer cells. In addition, genomic disruption of CDK12 caused by out-of-frame rearrangements was found in one MPC and in 13% of HER2-positive breast cancers, identified through a re-analysis of publicly available massively parallel sequencing data. In vitro analyses revealed that CDK12 gene disruption results in sensitivity to PARP inhibition, and forced expression of wild-type CDK12 in a CDK12-null cell line model resulted in relative resistance to PARP inhibition. Our findings demonstrate that MPCs are neither defined by highly recurrent mutations in the 273 genes tested, nor underpinned by a recurrent fusion gene. Although seemingly private genetic events, some of the fusion transcripts found in MPCs may play a role in maintenance of a malignant phenotype and potentially offer therapeutic opportunities.
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Affiliation(s)
- Rachael Natrajan
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Paul M Wilkerson
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | | | - Salvatore Piscuoglio
- Department of Pathology, Memorial Sloan-Kettering Cancer CenterNew York, NY, USA
| | - Charlotte KY Ng
- Department of Pathology, Memorial Sloan-Kettering Cancer CenterNew York, NY, USA
| | - Patty Wai
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Maryou B Lambros
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | | | | | - Jessica Frankum
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Ilirjana Bajrami
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Alicja Kopec
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Alan Mackay
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Roger A'hern
- Cancer Research UK Clinical Trials Unit, The Institute of Cancer ResearchSutton, UK
| | - Kerry Fenwick
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Iwanka Kozarewa
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Jarle Hakas
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Costas Mitsopoulos
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - David Hardisson
- Department of Pathology, Hospital Universitario La Paz, Universidad Autonoma de Madrid, Hospital La Paz Institute for Health Research (IdiPAZ)Madrid, Spain
| | - Christopher J Lord
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Chandan Kumar-Sinha
- Michigan Center for Translational Pathology (MCTP), Department of Pathology, University of MichiganAnn Arbor, MI, USA
| | - Alan Ashworth
- The Breakthrough Breast Cancer Research Centre, The Institute of Cancer ResearchLondon, UK
| | - Britta Weigelt
- Department of Pathology, Memorial Sloan-Kettering Cancer CenterNew York, NY, USA
| | - Anna Sapino
- Department of Medical Sciences, University of TurinTurin, Italy
| | - Arul M Chinnaiyan
- Michigan Center for Translational Pathology (MCTP), Department of Pathology, University of MichiganAnn Arbor, MI, USA
| | - Christopher A Maher
- Washington University Genome Institute, Washington UniversitySt Louis, MO, USA
| | - Jorge S Reis-Filho
- Department of Pathology, Memorial Sloan-Kettering Cancer CenterNew York, NY, USA
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