1
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Ito I, Yousef AMG, Chowdhury S, Dickson PN, Naini ZA, White MG, Fleten KG, Flatmark K, Fournier KF, Fowlkes NW, Shen JP. Intraperitoneal Paclitaxel Is a Safe and Effective Therapeutic Strategy for Treating Mucinous Appendiceal Adenocarcinoma. Cancer Res 2023; 83:3184-3191. [PMID: 37433032 PMCID: PMC10592351 DOI: 10.1158/0008-5472.can-23-0013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 05/29/2023] [Accepted: 07/07/2023] [Indexed: 07/13/2023]
Abstract
Appendiceal adenocarcinomas (AA) are a rare and heterogeneous mix of tumors for which few preclinical models exist. The rarity of AA has made performing prospective clinical trials difficult, which has partly contributed to AA remaining an orphan disease with no chemotherapeutic agents approved by the FDA for its treatment. AA has a unique biology in which it frequently forms diffuse peritoneal metastases but almost never spreads via a hematogenous route and rarely spreads to lymphatics. Given the localization of AA to the peritoneal space, intraperitoneal delivery of chemotherapy could be an effective treatment strategy. Here, we tested the efficacy of paclitaxel given by intraperitoneal administration using three orthotopic patient-derived xenograft (PDX) models of AA established in immunodeficient NSG mice. Weekly intraperitoneal paclitaxel treatment dramatically reduced AA tumor growth in all three PDX models. Comparing the safety and efficacy of intravenous with intraperitoneal administration, intraperitoneal delivery of paclitaxel was more effective, with reduced systemic side effects in mice. Given the established safety record of intraperitoneal paclitaxel in gastric and ovarian cancers, and lack of effective chemotherapeutics for AA, these data showing the activity of intraperitoneal paclitaxel in orthotopic PDX models of mucinous AA support the evaluation of intraperitoneal paclitaxel in a prospective clinical trial. SIGNIFICANCE The activity and safety of intraperitoneal paclitaxel in orthotopic PDX models of mucinous appendiceal adenocarcinoma supports the evaluation of intraperitoneal paclitaxel in a prospective clinical trial of this rare tumor type.
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Affiliation(s)
- Ichiaki Ito
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
| | - Abdelrahman MG Yousef
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
| | - Saikat Chowdhury
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
| | - Princess N Dickson
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
| | - Zahra A Naini
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
| | - Michael G White
- Department of Colon & Rectal Surgery, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
| | | | | | - Keith F Fournier
- Department of Surgery, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
| | - Natalie W Fowlkes
- Department of Veterinary Medicine & Surgery, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
| | - John Paul Shen
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, U.S.A
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2
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Ito I, Yousef AM, Dickson PN, Naini ZA, White MG, Fleten KG, Flatmark K, Fournier KF, Fowlkes NW, Shen JP. Antitumor activity of intraperitoneal paclitaxel in orthotopic patient-derived xenograft models of mucinous appendiceal adenocarcinoma. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.01.526672. [PMID: 36993681 PMCID: PMC10055008 DOI: 10.1101/2023.02.01.526672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Appendiceal adenocarcinomas (AAs) are a rare and heterogeneous mix of tumors for which few preclinical models exist. The rarity of AA has made performing prospective clinical trials difficult, and in part because of this AA remains an orphan disease with no chemotherapeutic agents approved by the FDA for its treatment. AA has a unique biology in which it frequently forms diffuse peritoneal metastases, but almost never spreads via a hematogenous route and rarely spreads to lymphatics. Given its localization to the peritoneal space we hypothesized that intraperitoneal (IP) delivery of chemotherapy could be an effective treatment strategy. Here we tested the efficacy paclitaxel given by IP administration using three orthotopic PDX models of AA established in NSG mice. Weekly treatment of 25.0 mg/kg of IP paclitaxel dramatically reduced AA tumor growth in TM00351 (81.9% reduction vs. control), PMP-2 (98.3% reduction vs. control), and PMCA-3 (71.4% reduction vs. control) PDX models. Comparing the safety and efficacy of intravenous (IV) to IP administration in PMCA-3, neither 6.25 nor 12.5 mg/kg of IV paclitaxel significantly reduced tumor growth. These results suggest that IP administration of paclitaxel is favorable to IV administration. Given the established safety record of IP paclitaxel in gastric and ovarian cancers, and lack of effective chemotherapeutics for AA, these data showing the activity of IP paclitaxel in orthotopic PDX models of mucinous AA support the evaluation of IP paclitaxel in a prospective clinical trial.
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3
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Flat W, Borowski S, Paraschiakos T, Blechner C, Windhorst S. DIAPH1 facilitates paclitaxel-mediated cytotoxicity of ovarian cancer cells. Biochem Pharmacol 2021; 197:114898. [PMID: 34968485 DOI: 10.1016/j.bcp.2021.114898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/14/2021] [Accepted: 12/14/2021] [Indexed: 11/17/2022]
Abstract
The chemotherapeutic agent paclitaxel (PTX) selectively binds to and stabilizes microtubule (MTs). Also, the activated formin Diaphanous Related Formin 1 (DIAPH1) binds to MTs and increases its stability. In a recent study, we found that high DIAPH1 levels correlated with increased survival of ovarian cancer (Ovca) patients. A possible explanation for this finding is that Ovca cells with high DIAPH1 levels are more sensitive to PTX. To examine this assumption, in this study the effect of DIAPH1 depletion on PTX-mediated cytotoxicity of OVCAR8 and OAW42 cells was analyzed. Our data showed that down-regulation of DIAPH1 expression decreased PTX sensitivity in both cell lines by reducing apoptosis or necrosis. Analysis of MT stability by Western blotting revealed a decreased concentration of stable, detyrosinated MTs in PTX-treated DIAPH1 knock-down compared to control cells. Also, in fixed metaphase cells the level of stable, detyrosinated spindle MTs decreased in cells with reduced DIAPH1 expression. In vitro analysis with recombinant DIAPH1 protein showed that PTX and DIAPH1 exhibited additive effects on MT-polymerization, showing that also in a cell-free system DIAPH1 increased the effect of PTX on MT-stability. Together, our data strongly indicate that DIAPH1 increases the response of Ovca cells to PTX by enhancing PTX-mediated MT-stability.
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Affiliation(s)
- Wilhelm Flat
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany
| | - Sarah Borowski
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany
| | - Themistoklis Paraschiakos
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany
| | - Christine Blechner
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany
| | - Sabine Windhorst
- Department of Biochemistry and Signal Transduction, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany.
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4
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Astarita EM, Maloney SM, Hoover CA, Berkeley BJ, VanKlompenberg MK, Nair TM, Prosperi JR. Adenomatous Polyposis Coli loss controls cell cycle regulators and response to paclitaxel in MDA-MB-157 metaplastic breast cancer cells. PLoS One 2021; 16:e0255738. [PMID: 34370741 PMCID: PMC8351968 DOI: 10.1371/journal.pone.0255738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 07/22/2021] [Indexed: 11/22/2022] Open
Abstract
Adenomatous Polyposis Coli (APC) is lost in approximately 70% of sporadic breast cancers, with an inclination towards triple negative breast cancer (TNBC). TNBC is treated with traditional chemotherapy, such as paclitaxel (PTX); however, tumors often develop drug resistance. We previously created APC knockdown cells (APC shRNA1) using the human TNBC cells, MDA-MB-157, and showed that APC loss induces PTX resistance. To understand the mechanisms behind APC-mediated PTX response, we performed cell cycle analysis and analyzed cell cycle related proteins. Cell cycle analysis indicated increased G2/M population in both PTX-treated APC shRNA1 and parental cells, suggesting that APC expression does not alter PTX-induced G2/M arrest. We further studied the subcellular localization of the G2/M transition proteins, cyclin B1 and CDK1. The APC shRNA1 cells had increased CDK1, which was preferentially localized to the cytoplasm, and increased baseline CDK6. RNA-sequencing was performed to gain a global understanding of changes downstream of APC loss and identified a broad mis-regulation of cell cycle-related genes in APC shRNA1 cells. Our studies are the first to show an interaction between APC and taxane response in breast cancer. The implications include designing combination therapy to re-sensitize APC-mutant breast cancers to taxanes using the specific cell cycle alterations.
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Affiliation(s)
- Emily M. Astarita
- Harper Cancer Research Institute, South Bend, IN, United States of America
- Department of Chemistry/Biochemistry, University of Notre Dame, Notre Dame, IN, United States of America
| | - Sara M. Maloney
- Harper Cancer Research Institute, South Bend, IN, United States of America
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, South Bend, South Bend, IN, United States of America
| | - Camden A. Hoover
- Harper Cancer Research Institute, South Bend, IN, United States of America
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States of America
| | | | - Monica K. VanKlompenberg
- Harper Cancer Research Institute, South Bend, IN, United States of America
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, South Bend, South Bend, IN, United States of America
| | - T. Murlidharan Nair
- Department of Biology and Computer Science/Informatics, Indiana University South Bend, South Bend, IN, United States of America
| | - Jenifer R. Prosperi
- Harper Cancer Research Institute, South Bend, IN, United States of America
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, South Bend, South Bend, IN, United States of America
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States of America
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5
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Stefanski CD, Prosperi JR. Wnt-Independent and Wnt-Dependent Effects of APC Loss on the Chemotherapeutic Response. Int J Mol Sci 2020; 21:E7844. [PMID: 33105836 PMCID: PMC7660076 DOI: 10.3390/ijms21217844] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/20/2020] [Accepted: 10/20/2020] [Indexed: 12/12/2022] Open
Abstract
Resistance to chemotherapy occurs through mechanisms within the epithelial tumor cells or through interactions with components of the tumor microenvironment (TME). Chemoresistance and the development of recurrent tumors are two of the leading factors of cancer-related deaths. The Adenomatous Polyposis Coli (APC) tumor suppressor is lost in many different cancers, including colorectal, breast, and prostate cancer, and its loss correlates with a decreased overall survival in cancer patients. While APC is commonly known for its role as a negative regulator of the WNT pathway, APC has numerous binding partners and functional roles. Through APC's interactions with DNA repair proteins, DNA replication proteins, tubulin, and other components, recent evidence has shown that APC regulates the chemotherapy response in cancer cells. In this review article, we provide an overview of some of the cellular processes in which APC participates and how they impact chemoresistance through both epithelial- and TME-derived mechanisms.
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Affiliation(s)
- Casey D. Stefanski
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46617, USA;
- Mike and Josie Harper Cancer Research Institute, South Bend, IN 46617, USA
| | - Jenifer R. Prosperi
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46617, USA;
- Mike and Josie Harper Cancer Research Institute, South Bend, IN 46617, USA
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine-South Bend, South Bend, IN 46617, USA
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6
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Long AS, Wills JW, Krolak D, Guo M, Dertinger SD, Arlt VM, White PA. Benchmark dose analyses of multiple genetic toxicity endpoints permit robust, cross-tissue comparisons of MutaMouse responses to orally delivered benzo[a]pyrene. Arch Toxicol 2018; 92:967-982. [PMID: 29177888 PMCID: PMC5818629 DOI: 10.1007/s00204-017-2099-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 10/17/2017] [Indexed: 12/14/2022]
Abstract
Genetic damage is a key event in tumorigenesis, and chemically induced genotoxic effects are a human health concern. Although genetic toxicity data have historically been interpreted using a qualitative screen-and-bin approach, there is increasing interest in quantitative analysis of genetic toxicity dose-response data. We demonstrate an emerging use of the benchmark dose (BMD)-approach for empirically ranking cross-tissue sensitivity. Using a model environmental carcinogen, we quantitatively examined responses for four genetic damage endpoints over an extended dose range, and conducted cross-tissue sensitivity rankings using BMD100 values and their 90% confidence intervals (CIs). MutaMouse specimens were orally exposed to 11 doses of benzo[a]pyrene. DNA adduct frequency and lacZ mutant frequency (MF) were measured in up to 8 tissues, and Pig-a MF and micronuclei (MN) were assessed in immature (RETs) and mature red blood cells (RBCs). The cross-tissue BMD pattern for lacZ MF is similar to that observed for DNA adducts, and is consistent with an oral route-of-exposure and differences in tissue-specific metabolism and proliferation. The lacZ MF BMDs were significantly correlated with the tissue-matched adduct BMDs, demonstrating a consistent adduct conversion rate across tissues. The BMD CIs, for both the Pig-a and the MN endpoints, overlapped for RETs and RBCs, suggesting comparable utility of both cell populations for protracted exposures. Examination of endpoint-specific response maxima illustrates the difficulty of comparing BMD values for a fixed benchmark response across endpoints. Overall, the BMD-approach permitted robust comparisons of responses across tissues/endpoints, which is valuable to our mechanistic understanding of how benzo[a]pyrene induces genetic damage.
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Affiliation(s)
- Alexandra S Long
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, 50 Colombine Driveway, Tunney's Pasture, A/L 0803A, Ottawa, ON, K1A 0K9, Canada.
- Department of Biology, University of Ottawa, Ottawa, ON, Canada.
| | - John W Wills
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, 50 Colombine Driveway, Tunney's Pasture, A/L 0803A, Ottawa, ON, K1A 0K9, Canada
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Dorothy Krolak
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, 50 Colombine Driveway, Tunney's Pasture, A/L 0803A, Ottawa, ON, K1A 0K9, Canada
| | - Matthew Guo
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, 50 Colombine Driveway, Tunney's Pasture, A/L 0803A, Ottawa, ON, K1A 0K9, Canada
| | | | - Volker M Arlt
- Analytical and Environmental Sciences Division, MRC-PHE Centre for Environment and Health, King's College London, London, UK
| | - Paul A White
- Mechanistic Studies Division, Environmental Health Science and Research Bureau, Health Canada, 50 Colombine Driveway, Tunney's Pasture, A/L 0803A, Ottawa, ON, K1A 0K9, Canada
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
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7
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Lee S, She J, Deng B, Kim J, de Andrade M, Na J, Sun Z, Wampfler JA, Cunningham JM, Wu Y, Limper AH, Aubry MC, Wendt C, Biterman P, Yang P, Lou Z. Multiple-level validation identifies PARK2 in the development of lung cancer and chronic obstructive pulmonary disease. Oncotarget 2018; 7:44211-44223. [PMID: 27329585 PMCID: PMC5190090 DOI: 10.18632/oncotarget.9954] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 05/09/2016] [Indexed: 12/31/2022] Open
Abstract
An important precursor to lung cancer development is chronic obstructive pulmonary disease (COPD), independent of exposure to tobacco smoke. Both diseases are associated with increased host susceptibility, inflammation, and genomic instability. However, validation of the candidate genes and functional confirmation to test shared genetic contribution and cellular mechanisms to the development of lung cancer in patients with COPD remains underexplored. Here, we show that loss of PARK2 (encoding Parkin) increases the expression of proinflammation factors as well as nuclear NF-κB localization, suggesting a role of PARK2 loss in inflammation. Additional exploration showed that PARK2 deficiency promotes genomic instability and cell transformation. This role of PARK2 in inflammation and chromosome instability provides a potential link among Parkin, COPD and lung cancer. A further comprehensive validation of 114 informative single nucleotide polymorphism (SNP) variants of PARK2, in 2,484 cases and controls with well-defined lung cancer and COPD phenotypes, found rs577876, rs6455728 and rs9346917 (p<0.01) to be significantly associated with lung cancer development in people with COPD. Our findings support the evidence that PARK2 might have a tumor suppressor role in the development of COPD and lung cancer.
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Affiliation(s)
- SeungBaek Lee
- Division of Oncology Research, Mayo Clinic, Rochester, MN, USA
| | - Jun She
- Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Bo Deng
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA.,Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
| | - JungJin Kim
- Division of Oncology Research, Mayo Clinic, Rochester, MN, USA
| | - Mariza de Andrade
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Jie Na
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Zhifu Sun
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Jason A Wampfler
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | | | - Yanhong Wu
- Genomics Shared Resource, Mayo Clinic, Rochester, MN, USA
| | - Andrew H Limper
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Chris Wendt
- Department of Medicine, Pulmonary Division, University of Minnesota, Minneapolis, MN, USA.,Department of Medicine, Pulmonary Section, Minneapolis VA Medical Center, Minneapolis, MN, USA
| | - Peter Biterman
- Department of Medicine, Pulmonary Division, University of Minnesota, Minneapolis, MN, USA
| | - Ping Yang
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Zhenkun Lou
- Division of Oncology Research, Mayo Clinic, Rochester, MN, USA
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8
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White PA, Douglas GR, Phillips DH, Arlt VM. Quantitative relationships between lacZ mutant frequency and DNA adduct frequency in Muta™Mouse tissues and cultured cells exposed to 3-nitrobenzanthrone. Mutagenesis 2017; 32:299-312. [PMID: 28096451 PMCID: PMC5638019 DOI: 10.1093/mutage/gew067] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 12/13/2016] [Indexed: 02/07/2023] Open
Abstract
The frequency of stable DNA adducts in a target tissue can be used to assess biologically effective dose; however, the utility of the metric in a risk assessment context depends on the likelihood that the DNA damage will be manifested as mutation. Previously, we employed the Muta™Mouse system to examine the induction of lacZ mutants and DNA adducts following exposure to the well-studied mutagenic carcinogen 3-nitrobenzanthrone (3-NBA). In this follow-up work, we examined the empirical relationships between total adduct frequency and mutant frequency (MF) in tissues and cultured cells following acute 3-NBA exposure. The results show a significant induction of DNA damage and lacZ mutants in liver, colon and bone marrow, as well as FE1 pulmonary epithelial cells. In contrast, lung and small intestine samples had low, but significantly elevated adduct levels, with no significant increases in lacZ MF. Additional analyses showed a significant relationship between the mutagenic efficiency of total adducts, measured as the slope of the relationships between MF and total adduct frequency, and tissue-specific mitotic index (MI). The lack of mutation response in lung, in contrast to the high in vitro MF in FE-1 lung cells, is likely related to the 100-fold difference in MI. The lack of small intestine mutagenic response may be related to limited metabolic capacity, differences in DNA repair, and /or chemically induced apoptosis that has been observed for other potent mutagens. The results indicate that interpretation of adduct frequency values in a risk assessment context can be improved by considering the MI of the target tissue; however, more generalised interpretation is hampered by tissue-specific variations in metabolic capacity and damage processing. The work provides a proof of principle regarding the use of the Muta™Mouse system to critically examine the health risks associated with tissue-specific adduct loads.
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Affiliation(s)
- Paul A White
- Environmental Health Science and Research Bureau, Health Canada, Tunney’s Pasture, Colombine Driveway, Ottawa, Ontario, Canada
| | - George R Douglas
- Environmental Health Science and Research Bureau, Health Canada, Tunney’s Pasture, Colombine Driveway, Ottawa, Ontario, Canada
| | - David H Phillips
- King’s College London, Analytical and Environmental Sciences Division, MRC-PHE Centre for Environment and Health, Franklin-Wilkins Building, London, UK
| | - Volker M Arlt
- King’s College London, Analytical and Environmental Sciences Division, MRC-PHE Centre for Environment and Health, Franklin-Wilkins Building, London, UK
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9
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Gao FJ, Shi L, Hines T, Hebbar S, Neufeld KL, Smith DS. Insulin signaling regulates a functional interaction between adenomatous polyposis coli and cytoplasmic dynein. Mol Biol Cell 2017; 28:587-599. [PMID: 28057765 PMCID: PMC5328618 DOI: 10.1091/mbc.e16-07-0555] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 12/23/2016] [Accepted: 12/30/2016] [Indexed: 12/24/2022] Open
Abstract
Diabetes is linked to an increased risk for colorectal cancer, but the mechanistic underpinnings of this clinically important effect are unclear. Here we describe an interaction between the microtubule motor cytoplasmic dynein, the adenomatous polyposis coli tumor suppressor protein (APC), and glycogen synthase kinase-3β (GSK-3β), which could shed light on this issue. GSK-3β is perhaps best known for glycogen regulation, being inhibited downstream in an insulin-signaling pathway. However, the kinase is also important in many other processes. Mutations in APC that disrupt the regulation of β-catenin by GSK-3β cause colorectal cancer in humans. Of interest, both APC and GSK-3β interact with microtubules and cellular membranes. We recently demonstrated that dynein is a GSK-3β substrate and that inhibition of GSK-3β promotes dynein-dependent transport. We now report that dynein stimulation in intestinal cells in response to acute insulin exposure (or GSK-3β inhibition) is blocked by tumor-promoting isoforms of APC that reduce an interaction between wild-type APC and dynein. We propose that under normal conditions, insulin decreases dynein binding to APC to stimulate minus end-directed transport, which could modulate endocytic and secretory systems in intestinal cells. Mutations in APC likely impair the ability to respond appropriately to insulin signaling. This is exciting because it has the potential to be a contributing factor in the development of colorectal cancer in patients with diabetes.
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Affiliation(s)
- Feng J Gao
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD 21025
| | - Liang Shi
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208
| | - Timothy Hines
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208
| | - Sachin Hebbar
- Department of Anesthesiology and Critical Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287
| | - Kristi L Neufeld
- Department of Molecular Biosciences, University of Kansas, Lawrence, KS 66045
| | - Deanna S Smith
- Department of Biological Sciences, University of South Carolina, Columbia, SC 29208
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10
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Guler E, Akbulut H, Geyik C, Yilmaz T, Gumus ZP, Barlas FB, Ahan RE, Demirkol DO, Yamada S, Endo T, Timur S, Yagci Y. Complex Structured Fluorescent Polythiophene Graft Copolymer as a Versatile Tool for Imaging, Targeted Delivery of Paclitaxel, and Radiotherapy. Biomacromolecules 2016; 17:2399-408. [DOI: 10.1021/acs.biomac.6b00491] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Emine Guler
- Ege University, Faculty of Science, Department
of Biochemistry, 35100-Bornova, Izmir, Turkey
- Ege University, Institute on Drug Abuse, Toxicology & Pharmaceutical Sciences, 35100-Bornova, Izmir, Turkey
| | - Huseyin Akbulut
- Department
of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34467-Istanbul, Turkey
| | - Caner Geyik
- Ege University, Institute on Drug Abuse, Toxicology & Pharmaceutical Sciences, 35100-Bornova, Izmir, Turkey
| | - Tulay Yilmaz
- Ege University, Institute on Drug Abuse, Toxicology & Pharmaceutical Sciences, 35100-Bornova, Izmir, Turkey
| | - Z. Pinar Gumus
- Ege University, Institute on Drug Abuse, Toxicology & Pharmaceutical Sciences, 35100-Bornova, Izmir, Turkey
| | - F. Baris Barlas
- Ege University, Faculty of Science, Department
of Biochemistry, 35100-Bornova, Izmir, Turkey
| | - Recep Erdem Ahan
- Department
of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34467-Istanbul, Turkey
| | - Dilek Odaci Demirkol
- Ege University, Faculty of Science, Department
of Biochemistry, 35100-Bornova, Izmir, Turkey
| | - Shuhei Yamada
- Molecular
Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan
| | - Takeshi Endo
- Molecular
Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan
| | - Suna Timur
- Ege University, Faculty of Science, Department
of Biochemistry, 35100-Bornova, Izmir, Turkey
- Ege University, Institute on Drug Abuse, Toxicology & Pharmaceutical Sciences, 35100-Bornova, Izmir, Turkey
| | - Yusuf Yagci
- Department
of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34467-Istanbul, Turkey
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11
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Wills JW, Long AS, Johnson GE, Bemis JC, Dertinger SD, Slob W, White PA. Empirical analysis of BMD metrics in genetic toxicology part II: in vivo potency comparisons to promote reductions in the use of experimental animals for genetic toxicity assessment. Mutagenesis 2016; 31:265-75. [PMID: 26984301 DOI: 10.1093/mutage/gew009] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Genotoxicity tests have traditionally been used only for hazard identification, with qualitative dichotomous groupings being used to identify compounds that have the capacity to induce mutations and/or cytogenetic alterations. However, there is an increasing interest in employing quantitative analysis of in vivo dose-response data to derive point of departure (PoD) metrics that can be used to establish human exposure limits or margins of exposure (MOEs), thereby supporting human health risk assessments and regulatory decisions. This work is an extension of our companion article on in vitro dose-response analyses and outlines how the combined benchmark dose (BMD) approach across included covariates can be used to improve the analyses and interpretation of in vivo genetic toxicity dose-response data. Using the BMD-covariate approach, we show that empirical comparisons of micronucleus frequency dose-response data across multiple studies justifies dataset merging, with subsequent analyses improving the precision of BMD estimates and permitting attendant potency ranking of seven clastogens. Similarly, empirical comparisons of Pig-a mutant phenotype frequency data collected in males and females justified dataset merging across sex. This permitted more effective scrutiny regarding the effect of post-exposure sampling time on the mutagenicity of N-ethyl-N-nitrosourea observed in reticulocytes and erythrocytes in the Pig-a assay. The BMD-covariate approach revealed tissue-specific differences in the induction of lacZ transgene mutations in Muta™Mouse specimens exposed to benzo[a]pyrene (BaP), with the results permitting the formulation of mechanistic hypotheses regarding the observed potency ranking. Lastly, we illustrate how historical dose-response data for assessments that examined numerous doses (i.e. induced lacZ mutant frequency (MF) across 10 doses of BaP) can be used to improve the precision of BMDs derived from datasets with far fewer doses (i.e. lacZ MF for 3 doses of dibenz[a,h]anthracene). Collectively, the presented examples illustrate how innovative use of the BMD approach can permit refinement of the use of in vivo data; improving the efficacy of experimental animal use in genetic toxicology without sacrificing PoD precision.
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Affiliation(s)
- John W Wills
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario K1A 0K9, Canada,
| | - Alexandra S Long
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario K1A 0K9, Canada
| | - George E Johnson
- Swansea University Medical School, Institute of Life Science, Swansea SA2 8PP, UK
| | | | | | - Wout Slob
- National Institute for Public Health and the Environment (RIVM), 3720 BA Bilthoven, The Netherlands
| | - Paul A White
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario K1A 0K9, Canada,
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12
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Huels DJ, Ridgway RA, Radulescu S, Leushacke M, Campbell AD, Biswas S, Leedham S, Serra S, Chetty R, Moreaux G, Parry L, Matthews J, Song F, Hedley A, Kalna G, Ceteci F, Reed KR, Meniel VS, Maguire A, Doyle B, Söderberg O, Barker N, Watson A, Larue L, Clarke AR, Sansom OJ. E-cadherin can limit the transforming properties of activating β-catenin mutations. EMBO J 2015; 34:2321-33. [PMID: 26240067 PMCID: PMC4570519 DOI: 10.15252/embj.201591739] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/23/2015] [Accepted: 07/01/2015] [Indexed: 11/09/2022] Open
Abstract
Wnt pathway deregulation is a common characteristic of many cancers. Only colorectal cancer predominantly harbours mutations in APC, whereas other cancer types (hepatocellular carcinoma, solid pseudopapillary tumours of the pancreas) have activating mutations in β-catenin (CTNNB1). We have compared the dynamics and the potency of β-catenin mutations in vivo. Within the murine small intestine (SI), an activating mutation of β-catenin took much longer to achieve Wnt deregulation and acquire a crypt-progenitor cell (CPC) phenotype than Apc or Gsk3 loss. Within the colon, a single activating mutation of β-catenin was unable to drive Wnt deregulation or induce the CPC phenotype. This ability of β-catenin mutation to differentially transform the SI versus the colon correlated with higher expression of E-cadherin and a higher number of E-cadherin:β-catenin complexes at the membrane. Reduction in E-cadherin synergised with an activating mutation of β-catenin resulting in a rapid CPC phenotype within the SI and colon. Thus, there is a threshold of β-catenin that is required to drive transformation, and E-cadherin can act as a buffer to sequester mutated β-catenin.
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Affiliation(s)
| | | | | | - Marc Leushacke
- A∗STAR Institute of Medical Biology, Singapore City, Singapore
| | | | - Sujata Biswas
- Gastrointestinal Stem Cell Biology Laboratory, Wellcome Trust Centre for Human Genetics University of Oxford, Oxford, UK Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Oxford, Headington, UK
| | - Simon Leedham
- Gastrointestinal Stem Cell Biology Laboratory, Wellcome Trust Centre for Human Genetics University of Oxford, Oxford, UK Translational Gastroenterology Unit, Experimental Medicine Division, Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Oxford, Headington, UK
| | - Stefano Serra
- Department of Pathology, University Health Network/Toronto Medical Laboratories, Toronto, Canada
| | - Runjan Chetty
- Department of Pathology, University Health Network/Toronto Medical Laboratories, Toronto, Canada
| | | | - Lee Parry
- European Cancer Stem Cell Research Institute, Cardiff University, Cardiff, UK
| | - James Matthews
- European Cancer Stem Cell Research Institute, Cardiff University, Cardiff, UK
| | - Fei Song
- Institute of Physiology, Justus-Liebig University Giessen, Giessen, Germany
| | - Ann Hedley
- Cancer Research UK Beatson Institute, Glasgow, UK
| | | | - Fatih Ceteci
- Cancer Research UK Beatson Institute, Glasgow, UK
| | - Karen R Reed
- European Cancer Stem Cell Research Institute, Cardiff University, Cardiff, UK
| | - Valerie S Meniel
- European Cancer Stem Cell Research Institute, Cardiff University, Cardiff, UK
| | - Aoife Maguire
- Department of Histopathology, Trinity College Dublin St James's Hospital, Dublin, Ireland
| | - Brendan Doyle
- Cancer Research UK Beatson Institute, Glasgow, UK Department of Histopathology, Trinity College Dublin St James's Hospital, Dublin, Ireland
| | - Ola Söderberg
- Department of Immunology, Genetics and Pathology Science for Life Laboratory, BMC Uppsala University, Uppsala, Sweden
| | - Nick Barker
- A∗STAR Institute of Medical Biology, Singapore City, Singapore
| | - Alastair Watson
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Lionel Larue
- Institut Curie, CNRS UMR3347 INSERM, U1021 Equipe labellisée - Ligue Nationale contre le Cancer, Orsay, France
| | - Alan R Clarke
- European Cancer Stem Cell Research Institute, Cardiff University, Cardiff, UK
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13
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Topham C, Tighe A, Ly P, Bennett A, Sloss O, Nelson L, Ridgway RA, Huels D, Littler S, Schandl C, Sun Y, Bechi B, Procter DJ, Sansom OJ, Cleveland DW, Taylor SS. MYC Is a Major Determinant of Mitotic Cell Fate. Cancer Cell 2015; 28:129-40. [PMID: 26175417 PMCID: PMC4518499 DOI: 10.1016/j.ccell.2015.06.001] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 03/04/2015] [Accepted: 06/08/2015] [Indexed: 12/13/2022]
Abstract
Taxol and other antimitotic agents are frontline chemotherapy agents but the mechanisms responsible for patient benefit remain unclear. Following a genome-wide siRNA screen, we identified the oncogenic transcription factor Myc as a taxol sensitizer. Using time-lapse imaging to correlate mitotic behavior with cell fate, we show that Myc sensitizes cells to mitotic blockers and agents that accelerate mitotic progression. Myc achieves this by upregulating a cluster of redundant pro-apoptotic BH3-only proteins and suppressing pro-survival Bcl-xL. Gene expression analysis of breast cancers indicates that taxane responses correlate positively with Myc and negatively with Bcl-xL. Accordingly, pharmacological inhibition of Bcl-xL restores apoptosis in Myc-deficient cells. These results open up opportunities for biomarkers and combination therapies that could enhance traditional and second-generation antimitotic agents.
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Affiliation(s)
- Caroline Topham
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Anthony Tighe
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Peter Ly
- Ludwig Institute for Cancer Research and Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA 92093, USA
| | - Ailsa Bennett
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Olivia Sloss
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Louisa Nelson
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Rachel A Ridgway
- Cancer Research UK Beatson Institute, Garscube Estate, Glasgow G61BD, UK
| | - David Huels
- Cancer Research UK Beatson Institute, Garscube Estate, Glasgow G61BD, UK
| | - Samantha Littler
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Claudia Schandl
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Ying Sun
- Ludwig Institute for Cancer Research and Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA 92093, USA
| | - Beatrice Bechi
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - David J Procter
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Owen J Sansom
- Cancer Research UK Beatson Institute, Garscube Estate, Glasgow G61BD, UK
| | - Don W Cleveland
- Ludwig Institute for Cancer Research and Department of Cellular and Molecular Medicine, University of California at San Diego, La Jolla, CA 92093, USA
| | - Stephen S Taylor
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
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14
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VanKlompenberg MK, Bedalov CO, Soto KF, Prosperi JR. APC selectively mediates response to chemotherapeutic agents in breast cancer. BMC Cancer 2015; 15:457. [PMID: 26049416 PMCID: PMC4458029 DOI: 10.1186/s12885-015-1456-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 05/20/2015] [Indexed: 02/25/2023] Open
Abstract
Background The Adenomatous Polyposis Coli (APC) tumor suppressor is mutated or hypermethylated in up to 70 % of sporadic breast cancers depending on subtype; however, the effects of APC mutation on tumorigenic properties remain unexplored. Using the ApcMin/+ mouse crossed to the Polyoma middle T antigen (PyMT) transgenic model, we identified enhanced breast tumorigenesis and alterations in genes critical in therapeutic resistance independent of Wnt/β-catenin signaling. Apc mutation changed the tumor histopathology from solid to squamous adenocarcinomas, resembling the highly aggressive human metaplastic breast cancer. Mechanistic studies in tumor-derived cell lines demonstrated that focal adhesion kinase (FAK)/Src/JNK signaling regulated the enhanced proliferation downstream of Apc mutation. Despite this mechanistic information, the role of APC in mediating breast cancer chemotherapeutic resistance is currently unknown. Methods We have examined the effect of Apc loss in MMTV-PyMT mouse breast cancer cells on gene expression changes of ATP-binding cassette transporters and immunofluorescence to determine proliferative and apoptotic response of cells to cisplatin, doxorubicin and paclitaxel. Furthermore we determined the added effect of Src or JNK inhibition by PP2 and SP600125, respectively, on chemotherapeutic response. We also used the Aldefluor assay to measure the population of tumor initiating cells. Lastly, we measured the apoptotic and proliferative response to APC knockdown in MDA-MB-157 human breast cancer cells after chemotherapeutic treatment. Results Cells obtained from MMTV-PyMT;ApcMin/+ tumors express increased MDR1 (multidrug resistance protein 1), which is augmented by treatment with paclitaxel or doxorubicin. Furthermore MMTV-PyMT;ApcMin/+ cells are more resistant to cisplatin and doxorubicin-induced apoptosis, and show a larger population of ALDH positive cells. In the human metaplastic breast cancer cell line MDA-MB-157, APC knockdown led to paclitaxel and cisplatin resistance. Conclusions APC loss-of-function significantly increases resistance to cisplatin-mediated apoptosis in both MDA-MB-157 and the PyMT derived cells. We also demonstrated that cisplatin in combination with PP2 or SP600125 could be clinically beneficial, as inhibition of Src or JNK in an APC-mutant breast cancer patient may alleviate the resistance induced by mutant APC. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1456-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Monica K VanKlompenberg
- Harper Cancer Research Institute, A134 Harper Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA.,Department of Biochemistry and Molecular Biology, Indiana University School of Medicine - South Bend, South Bend, IN, USA
| | - Claire O Bedalov
- Harper Cancer Research Institute, A134 Harper Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA.,Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - Katia Fernandez Soto
- Harper Cancer Research Institute, A134 Harper Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA.,Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - Jenifer R Prosperi
- Harper Cancer Research Institute, A134 Harper Hall, 1234 Notre Dame Ave., South Bend, IN, 46617, USA. .,Department of Biochemistry and Molecular Biology, Indiana University School of Medicine - South Bend, South Bend, IN, USA. .,Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA.
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15
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The APC tumor suppressor is required for epithelial cell polarization and three-dimensional morphogenesis. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1853:711-23. [PMID: 25578398 DOI: 10.1016/j.bbamcr.2014.12.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 12/30/2014] [Accepted: 12/31/2014] [Indexed: 12/21/2022]
Abstract
The Adenomatous Polyposis Coli (APC) tumor suppressor has been previously implicated in the control of apical-basal polarity; yet, the consequence of APC loss-of-function in epithelial polarization and morphogenesis has not been characterized. To test the hypothesis that APC is required for the establishment of normal epithelial polarity and morphogenesis programs, we generated APC-knockdown epithelial cell lines. APC depletion resulted in loss of polarity and multi-layering on permeable supports, and enlarged, filled spheroids with disrupted polarity in 3D culture. Importantly, these effects of APC knockdown were independent of Wnt/β-catenin signaling, but were rescued with either full-length or a carboxy (c)-terminal segment of APC. Moreover, we identified a gene expression signature associated with APC knockdown that points to several candidates known to regulate cell-cell and cell-matrix communication. Analysis of epithelial tissues from mice and humans carrying heterozygous APC mutations further supports the importance of APC as a regulator of epithelial behavior and tissue architecture. These data also suggest that the initiation of epithelial-derived tumors as a result of APC mutation or gene silencing may be driven by loss of polarity and dysmorphogenesis.
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16
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Geyik C, Ciftci M, Demir B, Guler B, Ozkaya AB, Gumus ZP, Barlas FB, Odaci Demirkol D, Coskunol H, Timur S, Yagci Y. Controlled release of anticancer drug Paclitaxel using nano-structured amphiphilic star-hyperbranched block copolymers. Polym Chem 2015. [DOI: 10.1039/c5py00780a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two amphiphilic star-hyperbranched copolymers with different hydrophilic PHEMA segments were synthesized, and their drug loading/release profiles were examined by using Paclitaxel.
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Affiliation(s)
- Caner Geyik
- Ege University
- Institute on Drug Abuse
- Toxicology and Pharmaceutical Sciences
- 35100, Izmir
- Turkey
| | - Mustafa Ciftci
- Istanbul Technical University
- Department of Chemistry
- 34469, Istanbul
- Turkey
| | - Bilal Demir
- Ege University
- Faculty of Science
- Department of Biochemistry
- 35100, Izmir
- Turkey
| | - Bahar Guler
- Ege University
- Faculty of Science
- Department of Biochemistry
- 35100, Izmir
- Turkey
| | - A. Burak Ozkaya
- Ege University
- School of Medicine
- Department of Medical Biochemistry
- 35100, Izmir
- Turkey
| | - Z. Pınar Gumus
- Ege University
- Institute on Drug Abuse
- Toxicology and Pharmaceutical Sciences
- 35100, Izmir
- Turkey
| | - F. Baris Barlas
- Ege University
- Faculty of Science
- Department of Biochemistry
- 35100, Izmir
- Turkey
| | | | - Hakan Coskunol
- Ege University
- Institute on Drug Abuse
- Toxicology and Pharmaceutical Sciences
- 35100, Izmir
- Turkey
| | - Suna Timur
- Ege University
- Institute on Drug Abuse
- Toxicology and Pharmaceutical Sciences
- 35100, Izmir
- Turkey
| | - Yusuf Yagci
- Istanbul Technical University
- Department of Chemistry
- 34469, Istanbul
- Turkey
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17
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Cui SY, Wang R, Chen LB. MicroRNAs: key players of taxane resistance and their therapeutic potential in human cancers. J Cell Mol Med 2013; 17:1207-17. [PMID: 24106980 PMCID: PMC4159023 DOI: 10.1111/jcmm.12131] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Accepted: 08/15/2013] [Indexed: 01/01/2023] Open
Abstract
The successful long-term use of taxane for cancer therapy is often prevented by the development of drug resistance in clinic. Thus, exploring the mechanisms involved is a first step towards rational strategies to overcome taxane resistance. Taxane resistance-related microRNA (miRNAs) are under investigation and miRNAs could induce the taxane resistance of tumour cells by regulating cell cycle distribution, survival and/or apoptosis pathways, drug transports, epithelial–mesenchymal transition and cancer stem cell. This article summarizes current research involving miRNAs as regulators of key target genes for tanxanxe chemoresistance and discusses the complex regulatory networks of miRNAs. Also, the authors will envisage future developments towards the potential use of targeting miRNAs as a novel strategy for improving response of tumour patients to taxane. miRNAs play critical roles in taxane chemoresistance and the miRNA-based therapies will be helpful for overcoming drug resistance and developing more effective personalized anti-cancer treatment strategies. Further research studies should be performed to promote therapeutic–clinical use of taxane resistance-related miRNAs in cancer patients, especially in those patients with taxane-resistant cancers.
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Affiliation(s)
- Shi-Yun Cui
- Department of Medical Oncology, School of Medicine, Jinling Hospital, Nanjing University, Nanjing, Jiangsu, China
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18
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Poulton JS, Mu FW, Roberts DM, Peifer M. APC2 and Axin promote mitotic fidelity by facilitating centrosome separation and cytoskeletal regulation. Development 2013; 140:4226-36. [PMID: 24026117 DOI: 10.1242/dev.094425] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
To ensure the accurate transmission of genetic material, chromosome segregation must occur with extremely high fidelity. Segregation errors lead to chromosomal instability (CIN), with deleterious consequences. Mutations in the tumor suppressor adenomatous polyposis coli (APC) initiate most colon cancers and have also been suggested to promote disease progression through increased CIN, but the mechanistic role of APC in preventing CIN remains controversial. Using fly embryos as a model, we investigated the role of APC proteins in CIN. Our findings suggest that APC2 loss leads to increased rates of chromosome segregation error. This occurs through a cascade of events beginning with incomplete centrosome separation leading to failure to inhibit formation of ectopic cleavage furrows, which result in mitotic defects and DNA damage. We test several hypotheses related to the mechanism of action of APC2, revealing that APC2 functions at the embryonic cortex with several protein partners, including Axin, to promote mitotic fidelity. Our in vivo data demonstrate that APC2 protects genome stability by modulating mitotic fidelity through regulation of the cytoskeleton.
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Affiliation(s)
- John S Poulton
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
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19
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Wang X, Pan L, Mao N, Sun L, Qin X, Yin J. Cell-cycle synchronization reverses Taxol resistance of human ovarian cancer cell lines. Cancer Cell Int 2013; 13:77. [PMID: 23899403 PMCID: PMC3751242 DOI: 10.1186/1475-2867-13-77] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 07/24/2013] [Indexed: 11/25/2022] Open
Abstract
Background Taxol is a powerful chemotherapy agent leading to mitotic arrest and cell death; however, its clinical efficacy has been hampered due to the development of drug resistance. Taxol specifically targets the cell cycle. Progress through mitosis (M stage) is an absolute requirement for drug-induced death because cell death is markedly reduced in cells blocked at the G1-S transition. The measured doubling time for ovarian cancer cells is about 27 h. As such, during treatment with Taxol most of the cells are not in the M stage of the cell cycle. Thus, the effect of cell-cycle synchronization was investigated in regard to reversing Taxol resistance in ovarian cancer cells. Methods Giemsa-Wright staining was used for assessing the morphology of the cells. The doubling time of the cells was calculated using formula as follows: Td = In2/slope. The resistant index and cell cycle were measured via MTT assays and flow cytometry. Thymidine was used to induce cell-cycle synchronization, and cell apoptosis rates following exposure to Taxol were measured using a flow cytometer. Results The growth doubling time of two Taxol-resistant cell lines were longer than that of Taxol-sensitive cells. Apoptotic rates in Taxol-sensitive and -resistant cell lines after synchronization and exposure to Taxol were all higher compared to unsynchronized controls (p <0.05). Conclusions Synchronization of the cell-cycle resulted in an increased effectiveness of Taxol toward ovarian cancer cell lines. We speculated that formation of drug resistance toward Taxol in ovarian cancer could be partly attributed to the longer doubling time of these cells.
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Affiliation(s)
- Xueqing Wang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Peking, China.
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20
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van der Zee M, Jia Y, Wang Y, Heijmans-Antonissen C, Ewing PC, Franken P, DeMayo FJ, Lydon JP, Burger CW, Fodde R, Blok LJ. Alterations in Wnt-β
-catenin and Pten signalling play distinct roles in endometrial cancer initiation and progression. J Pathol 2013; 230:48-58. [DOI: 10.1002/path.4160] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 11/29/2012] [Accepted: 12/21/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Marten van der Zee
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Yundan Jia
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Yongyi Wang
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | | | - Patricia C Ewing
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Patrick Franken
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Francesco J DeMayo
- Department of Molecular and Cellular Biology; Baylor College of Medicine; Houston TX USA
| | - John P Lydon
- Department of Molecular and Cellular Biology; Baylor College of Medicine; Houston TX USA
| | - Curt W Burger
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Riccardo Fodde
- Department of Pathology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Leen J Blok
- Department of Obstetrics and Gynaecology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
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21
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Zeineldin M, Neufeld KL. More than two decades of Apc modeling in rodents. Biochim Biophys Acta Rev Cancer 2013; 1836:80-9. [PMID: 23333833 DOI: 10.1016/j.bbcan.2013.01.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 12/31/2012] [Accepted: 01/03/2013] [Indexed: 02/07/2023]
Abstract
Mutation of tumor suppressor gene adenomatous polyposis coli (APC) is an initiating step in most colon cancers. This review summarizes Apc models in mice and rats, with particular concentration on those most recently developed, phenotypic variation among different models, and genotype/phenotype correlations.
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Affiliation(s)
- Maged Zeineldin
- Department of Molecular Biosciences, University of Kansas, 1200 Sunnyside Ave., Lawrence, KS 66045, USA
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22
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Voronkov A, Krauss S. Wnt/beta-catenin signaling and small molecule inhibitors. Curr Pharm Des 2013; 19:634-64. [PMID: 23016862 PMCID: PMC3529405 DOI: 10.2174/138161213804581837] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Accepted: 09/23/2012] [Indexed: 12/27/2022]
Abstract
Wnt/β-catenin signaling is a branch of a functional network that dates back to the first metazoans and it is involved in a broad range of biological systems including stem cells, embryonic development and adult organs. Deregulation of components involved in Wnt/β-catenin signaling has been implicated in a wide spectrum of diseases including a number of cancers and degenerative diseases. The key mediator of Wnt signaling, β-catenin, serves several cellular functions. It functions in a dynamic mode at multiple cellular locations, including the plasma membrane, where β-catenin contributes to the stabilization of intercellular adhesive complexes, the cytoplasm where β-catenin levels are regulated and the nucleus where β-catenin is involved in transcriptional regulation and chromatin interactions. Central effectors of β-catenin levels are a family of cysteine-rich secreted glycoproteins, known as Wnt morphogens. Through the LRP5/6-Frizzled receptor complex, Wnts regulate the location and activity of the destruction complex and consequently intracellular β- catenin levels. However, β-catenin levels and their effects on transcriptional programs are also influenced by multiple other factors including hypoxia, inflammation, hepatocyte growth factor-mediated signaling, and the cell adhesion molecule E-cadherin. The broad implications of Wnt/β-catenin signaling in development, in the adult body and in disease render the pathway a prime target for pharmacological research and development. The intricate regulation of β-catenin at its various locations provides alternative points for therapeutic interventions.
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Affiliation(s)
- Andrey Voronkov
- SFI-CAST Biomedical Innovation Center, Unit for Cell Signaling, Oslo University Hospital, Forskningsparken, Gaustadalleén 21, 0349, Oslo, Norway
| | - Stefan Krauss
- SFI-CAST Biomedical Innovation Center, Unit for Cell Signaling, Oslo University Hospital, Forskningsparken, Gaustadalleén 21, 0349, Oslo, Norway
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23
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Klotz DM, Nelson SA, Kroboth K, Newton IP, Radulescu S, Ridgway RA, Sansom OJ, Appleton PL, Näthke IS. The microtubule poison vinorelbine kills cells independently of mitotic arrest and targets cells lacking the APC tumour suppressor more effectively. J Cell Sci 2012; 125:887-95. [PMID: 22399804 PMCID: PMC3311929 DOI: 10.1242/jcs.091843] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2011] [Indexed: 12/26/2022] Open
Abstract
Colorectal cancers commonly carry truncation mutations in the adenomatous polyposis coli (APC) gene. The APC protein contributes to the stabilization of microtubules. Consistently, microtubules in cells lacking APC depolymerize more readily in response to microtubule-destabilizing drugs. This raises the possibility that such agents are suitable for treatment of APC-deficient cancers. However, APC-deficient cells have a compromised spindle assembly checkpoint, which renders them less sensitive to killing by microtubule poisons whose toxicity relies on the induction of prolonged mitotic arrest. Here, we describe the novel discovery that the clinically used microtubule-depolymerizing drug vinorelbine (Navelbine) kills APC-deficient cells in culture and in intestinal tissue more effectively than it kills wild-type cells. This is due to the ability of vinorelbine to kill cells in interphase independently of mitotic arrest. Consistent with a role for p53 in cell death in interphase, depletion of p53 renders cells less sensitive to vinorelbine, but only in the presence of wild-type APC. The pro-apoptotic protein BIM (also known as BCL2L11) is recruited to mitochondria in response to vinorelbine, where it can inhibit the anti-apoptotic protein BCL2, suggesting that BIM mediates vinorelbine-induced cell death. This recruitment of BIM is enhanced in cells lacking APC. Consistently, BIM depletion dampens the selective effect of vinorelbine on these cells. Our findings reveal that vinorelbine is a potential therapeutic agent for colorectal cancer, but they also illustrate the importance of the APC tumour suppressor status when predicting therapeutic efficacy.
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Affiliation(s)
- Daniel M. Klotz
- Division of Cell and Developmental Biology, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
| | - Scott A. Nelson
- Division of Cell and Developmental Biology, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
| | - Karin Kroboth
- Division of Molecular Medicine, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
| | - Ian P. Newton
- Division of Cell and Developmental Biology, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
| | - Sorina Radulescu
- The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Bearsden, Glasgow, G61 1BD, UK
| | - Rachel A. Ridgway
- The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Bearsden, Glasgow, G61 1BD, UK
| | - Owen J. Sansom
- The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Bearsden, Glasgow, G61 1BD, UK
| | - Paul L. Appleton
- Division of Cell and Developmental Biology, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
| | - Inke S. Näthke
- Division of Cell and Developmental Biology, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
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Davoli T, de Lange T. The causes and consequences of polyploidy in normal development and cancer. Annu Rev Cell Dev Biol 2011; 27:585-610. [PMID: 21801013 DOI: 10.1146/annurev-cellbio-092910-154234] [Citation(s) in RCA: 316] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Although nearly all mammalian species are diploid, whole-genome duplications occur in select mammalian tissues as part of normal development. Such programmed polyploidization involves changes in the regulatory pathways that normally maintain the diploid state of the mammalian genome. Unscheduled whole-genome duplications, which lead primarily to tetraploid cells, also take place in a substantial fraction of human tumors and have been proposed to constitute an important step in the development of cancer aneuploidy. The origins of these polyploidization events and their consequences for tumor progression are explored in this review.
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Affiliation(s)
- Teresa Davoli
- Laboratory for Cell Biology and Genetics, The Rockefeller University, New York, NY 10065, USA
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